From a857360a42cbd10dae9563d1d3d647550a9eb40d Mon Sep 17 00:00:00 2001 From: Dipankar Bhardwaj Date: Wed, 17 Aug 2022 13:49:27 +0000 Subject: Remove leveldb 1.18 version files Test: Presubmit should find issues and currently there is no dependency on it. Bug: 239414225 Change-Id: I7a3250b185b2a200ec96b4dc2891bef5266a7cf5 --- Android.mk | 26 - leveldb-1.18/.gitignore | 9 - leveldb-1.18/AUTHORS | 12 - leveldb-1.18/CONTRIBUTING.md | 36 - leveldb-1.18/LICENSE | 27 - leveldb-1.18/Makefile | 227 - leveldb-1.18/NEWS | 17 - leveldb-1.18/README | 51 - leveldb-1.18/README.md | 138 - leveldb-1.18/TODO | 14 - leveldb-1.18/build_detect_platform | 228 - leveldb-1.18/db/autocompact_test.cc | 118 - leveldb-1.18/db/builder.cc | 88 - leveldb-1.18/db/builder.h | 34 - leveldb-1.18/db/c.cc | 595 - leveldb-1.18/db/c_test.c | 390 - leveldb-1.18/db/corruption_test.cc | 374 - leveldb-1.18/db/db_bench.cc | 978 -- leveldb-1.18/db/db_impl.cc | 1513 -- leveldb-1.18/db/db_impl.h | 211 - leveldb-1.18/db/db_iter.cc | 317 - leveldb-1.18/db/db_iter.h | 28 - leveldb-1.18/db/db_test.cc | 2128 --- leveldb-1.18/db/dbformat.cc | 140 - leveldb-1.18/db/dbformat.h | 230 - leveldb-1.18/db/dbformat_test.cc | 112 - leveldb-1.18/db/dumpfile.cc | 225 - leveldb-1.18/db/filename.cc | 144 - leveldb-1.18/db/filename.h | 85 - leveldb-1.18/db/filename_test.cc | 123 - leveldb-1.18/db/leveldb_main.cc | 64 - leveldb-1.18/db/log_format.h | 35 - leveldb-1.18/db/log_reader.cc | 266 - leveldb-1.18/db/log_reader.h | 108 - leveldb-1.18/db/log_test.cc | 530 - leveldb-1.18/db/log_writer.cc | 103 - leveldb-1.18/db/log_writer.h | 48 - leveldb-1.18/db/memtable.cc | 145 - leveldb-1.18/db/memtable.h | 91 - leveldb-1.18/db/repair.cc | 461 - leveldb-1.18/db/skiplist.h | 384 - leveldb-1.18/db/skiplist_test.cc | 378 - leveldb-1.18/db/snapshot.h | 66 - leveldb-1.18/db/table_cache.cc | 127 - leveldb-1.18/db/table_cache.h | 61 - leveldb-1.18/db/version_edit.cc | 266 - leveldb-1.18/db/version_edit.h | 107 - leveldb-1.18/db/version_edit_test.cc | 46 - leveldb-1.18/db/version_set.cc | 1484 -- leveldb-1.18/db/version_set.h | 396 - leveldb-1.18/db/version_set_test.cc | 179 - leveldb-1.18/db/write_batch.cc | 147 - leveldb-1.18/db/write_batch_internal.h | 49 - leveldb-1.18/db/write_batch_test.cc | 120 - leveldb-1.18/doc/bench/db_bench_sqlite3.cc | 718 - leveldb-1.18/doc/bench/db_bench_tree_db.cc | 528 - leveldb-1.18/doc/benchmark.html | 459 - leveldb-1.18/doc/doc.css | 89 - leveldb-1.18/doc/impl.html | 213 - leveldb-1.18/doc/index.html | 549 - leveldb-1.18/doc/log_format.txt | 75 - leveldb-1.18/doc/table_format.txt | 104 - leveldb-1.18/helpers/memenv/memenv.cc | 385 - leveldb-1.18/helpers/memenv/memenv.h | 20 - leveldb-1.18/helpers/memenv/memenv_test.cc | 232 - leveldb-1.18/include/leveldb/c.h | 290 - leveldb-1.18/include/leveldb/cache.h | 99 - leveldb-1.18/include/leveldb/comparator.h | 63 - leveldb-1.18/include/leveldb/db.h | 161 - leveldb-1.18/include/leveldb/dumpfile.h | 25 - leveldb-1.18/include/leveldb/env.h | 333 - leveldb-1.18/include/leveldb/filter_policy.h | 70 - leveldb-1.18/include/leveldb/iterator.h | 100 - leveldb-1.18/include/leveldb/options.h | 195 - leveldb-1.18/include/leveldb/slice.h | 109 - leveldb-1.18/include/leveldb/status.h | 106 - leveldb-1.18/include/leveldb/table.h | 85 - leveldb-1.18/include/leveldb/table_builder.h | 92 - leveldb-1.18/include/leveldb/write_batch.h | 64 - leveldb-1.18/issues/issue178_test.cc | 92 - leveldb-1.18/issues/issue200_test.cc | 59 - leveldb-1.18/port/README | 10 - leveldb-1.18/port/atomic_pointer.h | 243 - leveldb-1.18/port/port.h | 19 - leveldb-1.18/port/port_example.h | 135 - leveldb-1.18/port/port_posix.cc | 54 - leveldb-1.18/port/port_posix.h | 154 - leveldb-1.18/port/thread_annotations.h | 60 - leveldb-1.18/port/win/stdint.h | 24 - leveldb-1.18/table/block.cc | 268 - leveldb-1.18/table/block.h | 44 - leveldb-1.18/table/block_builder.cc | 109 - leveldb-1.18/table/block_builder.h | 57 - leveldb-1.18/table/filter_block.cc | 111 - leveldb-1.18/table/filter_block.h | 68 - leveldb-1.18/table/filter_block_test.cc | 128 - leveldb-1.18/table/format.cc | 145 - leveldb-1.18/table/format.h | 108 - leveldb-1.18/table/iterator.cc | 67 - leveldb-1.18/table/iterator_wrapper.h | 63 - leveldb-1.18/table/merger.cc | 197 - leveldb-1.18/table/merger.h | 26 - leveldb-1.18/table/table.cc | 285 - leveldb-1.18/table/table_builder.cc | 270 - leveldb-1.18/table/table_test.cc | 868 -- leveldb-1.18/table/two_level_iterator.cc | 182 - leveldb-1.18/table/two_level_iterator.h | 34 - leveldb-1.18/util/arena.cc | 68 - leveldb-1.18/util/arena.h | 68 - leveldb-1.18/util/arena_test.cc | 68 - leveldb-1.18/util/bloom.cc | 95 - leveldb-1.18/util/bloom_test.cc | 161 - leveldb-1.18/util/cache.cc | 325 - leveldb-1.18/util/cache_test.cc | 186 - leveldb-1.18/util/coding.cc | 194 - leveldb-1.18/util/coding.h | 104 - leveldb-1.18/util/coding_test.cc | 196 - leveldb-1.18/util/comparator.cc | 81 - leveldb-1.18/util/crc32c.cc | 332 - leveldb-1.18/util/crc32c.h | 45 - leveldb-1.18/util/crc32c_test.cc | 72 - leveldb-1.18/util/env.cc | 96 - leveldb-1.18/util/env_posix.cc | 605 - leveldb-1.18/util/env_test.cc | 104 - leveldb-1.18/util/filter_policy.cc | 11 - leveldb-1.18/util/hash.cc | 52 - leveldb-1.18/util/hash.h | 19 - leveldb-1.18/util/hash_test.cc | 54 - leveldb-1.18/util/histogram.cc | 139 - leveldb-1.18/util/histogram.h | 42 - leveldb-1.18/util/logging.cc | 72 - leveldb-1.18/util/logging.h | 43 - leveldb-1.18/util/mutexlock.h | 41 - leveldb-1.18/util/options.cc | 29 - leveldb-1.18/util/posix_logger.h | 98 - leveldb-1.18/util/random.h | 64 - leveldb-1.18/util/status.cc | 75 - leveldb-1.18/util/testharness.cc | 77 - leveldb-1.18/util/testharness.h | 138 - leveldb-1.18/util/testutil.cc | 51 - leveldb-1.18/util/testutil.h | 53 - snappy-1.1.0/AUTHORS | 1 - snappy-1.1.0/COPYING | 28 - snappy-1.1.0/ChangeLog | 1618 --- snappy-1.1.0/INSTALL | 370 - snappy-1.1.0/Makefile.am | 23 - snappy-1.1.0/Makefile.in | 956 -- snappy-1.1.0/NEWS | 104 - snappy-1.1.0/README | 135 - snappy-1.1.0/aclocal.m4 | 9738 ------------- snappy-1.1.0/autogen.sh | 7 - snappy-1.1.0/config.guess | 1530 -- snappy-1.1.0/config.h.in | 128 - snappy-1.1.0/config.sub | 1773 --- snappy-1.1.0/configure | 18767 ------------------------- snappy-1.1.0/configure.ac | 126 - snappy-1.1.0/depcomp | 688 - snappy-1.1.0/format_description.txt | 110 - snappy-1.1.0/framing_format.txt | 124 - snappy-1.1.0/install-sh | 527 - snappy-1.1.0/ltmain.sh | 9661 ------------- snappy-1.1.0/m4/gtest.m4 | 74 - snappy-1.1.0/missing | 331 - snappy-1.1.0/snappy-c.cc | 90 - snappy-1.1.0/snappy-c.h | 138 - snappy-1.1.0/snappy-internal.h | 150 - snappy-1.1.0/snappy-sinksource.cc | 71 - snappy-1.1.0/snappy-sinksource.h | 137 - snappy-1.1.0/snappy-stubs-internal.cc | 42 - snappy-1.1.0/snappy-stubs-internal.h | 491 - snappy-1.1.0/snappy-stubs-public.h | 85 - snappy-1.1.0/snappy-stubs-public.h.in | 85 - snappy-1.1.0/snappy-test.cc | 602 - snappy-1.1.0/snappy-test.h | 584 - snappy-1.1.0/snappy.cc | 1119 -- snappy-1.1.0/snappy.h | 163 - snappy-1.1.0/snappy_unittest.cc | 1157 -- snappy-1.1.0/testdata/alice29.txt | 3609 ----- snappy-1.1.0/testdata/asyoulik.txt | 4122 ------ snappy-1.1.0/testdata/baddata1.snappy | Bin 27512 -> 0 bytes snappy-1.1.0/testdata/baddata2.snappy | Bin 27483 -> 0 bytes snappy-1.1.0/testdata/baddata3.snappy | Bin 28384 -> 0 bytes snappy-1.1.0/testdata/cp.html | 645 - snappy-1.1.0/testdata/fields.c | 431 - snappy-1.1.0/testdata/geo.protodata | Bin 118588 -> 0 bytes snappy-1.1.0/testdata/grammar.lsp | 94 - snappy-1.1.0/testdata/house.jpg | Bin 126958 -> 0 bytes snappy-1.1.0/testdata/html | 1 - snappy-1.1.0/testdata/html_x_4 | 1 - snappy-1.1.0/testdata/kennedy.xls | Bin 1029744 -> 0 bytes snappy-1.1.0/testdata/kppkn.gtb | Bin 184320 -> 0 bytes snappy-1.1.0/testdata/lcet10.txt | 7519 ---------- snappy-1.1.0/testdata/mapreduce-osdi-1.pdf | Bin 94330 -> 0 bytes snappy-1.1.0/testdata/plrabn12.txt | 10699 -------------- snappy-1.1.0/testdata/ptt5 | Bin 513216 -> 0 bytes snappy-1.1.0/testdata/sum | Bin 38240 -> 0 bytes snappy-1.1.0/testdata/urls.10K | 10000 ------------- snappy-1.1.0/testdata/xargs.1 | 112 - 198 files changed, 116147 deletions(-) delete mode 100644 Android.mk delete mode 100644 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$(CLEAR_VARS) - -LOCAL_MODULE := leveldb -LOCAL_MODULE_TAGS := optional -LOCAL_SDK_VERSION := 9 -LOCAL_NDK_STL_VARIANT := gnustl_static -LOCAL_CFLAGS := -D_REENTRANT -DOS_ANDROID -DLEVELDB_PLATFORM_POSIX -DNDEBUG -DSNAPPY -LOCAL_CPP_EXTENSION := .cc -LOCAL_C_INCLUDES := $(LOCAL_PATH)/leveldb-1.18 $(LOCAL_PATH)/leveldb-1.18/include $(LOCAL_PATH)/snappy-1.1.0 -LOCAL_SRC_FILES := leveldb-1.18/db/builder.cc leveldb-1.18/db/c.cc leveldb-1.18/db/db_impl.cc leveldb-1.18/db/db_iter.cc leveldb-1.18/db/dbformat.cc leveldb-1.18/db/filename.cc leveldb-1.18/db/log_reader.cc leveldb-1.18/db/log_writer.cc leveldb-1.18/db/memtable.cc leveldb-1.18/db/repair.cc leveldb-1.18/db/table_cache.cc leveldb-1.18/db/version_edit.cc leveldb-1.18/db/version_set.cc leveldb-1.18/db/write_batch.cc leveldb-1.18/table/block.cc leveldb-1.18/table/block_builder.cc leveldb-1.18/table/filter_block.cc leveldb-1.18/table/format.cc leveldb-1.18/table/iterator.cc leveldb-1.18/table/merger.cc leveldb-1.18/table/table.cc leveldb-1.18/table/table_builder.cc leveldb-1.18/table/two_level_iterator.cc leveldb-1.18/util/arena.cc leveldb-1.18/util/bloom.cc leveldb-1.18/util/cache.cc leveldb-1.18/util/coding.cc leveldb-1.18/util/comparator.cc leveldb-1.18/util/crc32c.cc leveldb-1.18/util/env.cc leveldb-1.18/util/env_posix.cc leveldb-1.18/util/filter_policy.cc leveldb-1.18/util/hash.cc leveldb-1.18/util/histogram.cc leveldb-1.18/util/logging.cc leveldb-1.18/util/options.cc leveldb-1.18/util/status.cc leveldb-1.18/port/port_posix.cc -LOCAL_STATIC_LIBRARIES += snappy - -include $(BUILD_STATIC_LIBRARY) - - -include $(CLEAR_VARS) -LOCAL_MODULE := snappy -LOCAL_MODULE_TAGS := optional -LOCAL_SDK_VERSION := 9 -LOCAL_NDK_STL_VARIANT := gnustl_static -LOCAL_CPP_EXTENSION := .cc -LOCAL_SRC_FILES := snappy-1.1.0/snappy.cc snappy-1.1.0/snappy-sinksource.cc - -include $(BUILD_STATIC_LIBRARY) diff --git a/leveldb-1.18/.gitignore b/leveldb-1.18/.gitignore deleted file mode 100644 index 0630251..0000000 --- a/leveldb-1.18/.gitignore +++ /dev/null @@ -1,9 +0,0 @@ -build_config.mk -*.a -*.o -*.dylib* -*.so -*.so.* -*_test -db_bench -leveldbutil diff --git a/leveldb-1.18/AUTHORS b/leveldb-1.18/AUTHORS deleted file mode 100644 index 2439d7a..0000000 --- a/leveldb-1.18/AUTHORS +++ /dev/null @@ -1,12 +0,0 @@ -# Names should be added to this file like so: -# Name or Organization - -Google Inc. - -# Initial version authors: -Jeffrey Dean -Sanjay Ghemawat - -# Partial list of contributors: -Kevin Regan -Johan Bilien diff --git a/leveldb-1.18/CONTRIBUTING.md b/leveldb-1.18/CONTRIBUTING.md deleted file mode 100644 index cd600ff..0000000 --- a/leveldb-1.18/CONTRIBUTING.md +++ /dev/null @@ -1,36 +0,0 @@ -# Contributing - -We'd love to accept your code patches! However, before we can take them, we -have to jump a couple of legal hurdles. - -## Contributor License Agreements - -Please fill out either the individual or corporate Contributor License -Agreement as appropriate. - -* If you are an individual writing original source code and you're sure you -own the intellectual property, then sign an [individual CLA](https://developers.google.com/open-source/cla/individual). -* If you work for a company that wants to allow you to contribute your work, -then sign a [corporate CLA](https://developers.google.com/open-source/cla/corporate). - -Follow either of the two links above to access the appropriate CLA and -instructions for how to sign and return it. - -## Submitting a Patch - -1. Sign the contributors license agreement above. -2. Decide which code you want to submit. A submission should be a set of changes -that addresses one issue in the [issue tracker](https://github.com/google/leveldb/issues). -Please don't mix more than one logical change per submission, because it makes -the history hard to follow. If you want to make a change -(e.g. add a sample or feature) that doesn't have a corresponding issue in the -issue tracker, please create one. -3. **Submitting**: When you are ready to submit, send us a Pull Request. Be -sure to include the issue number you fixed and the name you used to sign -the CLA. - -## Writing Code ## - -If your contribution contains code, please make sure that it follows -[the style guide](http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml). -Otherwise we will have to ask you to make changes, and that's no fun for anyone. diff --git a/leveldb-1.18/LICENSE b/leveldb-1.18/LICENSE deleted file mode 100644 index 8e80208..0000000 --- a/leveldb-1.18/LICENSE +++ /dev/null @@ -1,27 +0,0 @@ -Copyright (c) 2011 The LevelDB Authors. All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright -notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above -copyright notice, this list of conditions and the following disclaimer -in the documentation and/or other materials provided with the -distribution. - * Neither the name of Google Inc. nor the names of its -contributors may be used to endorse or promote products derived from -this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/leveldb-1.18/Makefile b/leveldb-1.18/Makefile deleted file mode 100644 index 2bd2cad..0000000 --- a/leveldb-1.18/Makefile +++ /dev/null @@ -1,227 +0,0 @@ -# Copyright (c) 2011 The LevelDB Authors. All rights reserved. -# Use of this source code is governed by a BSD-style license that can be -# found in the LICENSE file. See the AUTHORS file for names of contributors. - -#----------------------------------------------- -# Uncomment exactly one of the lines labelled (A), (B), and (C) below -# to switch between compilation modes. - -# (A) Production use (optimized mode) -OPT ?= -O2 -DNDEBUG -# (B) Debug mode, w/ full line-level debugging symbols -# OPT ?= -g2 -# (C) Profiling mode: opt, but w/debugging symbols -# OPT ?= -O2 -g2 -DNDEBUG -#----------------------------------------------- - -# detect what platform we're building on -$(shell CC="$(CC)" CXX="$(CXX)" TARGET_OS="$(TARGET_OS)" \ - ./build_detect_platform build_config.mk ./) -# this file is generated by the previous line to set build flags and sources -include build_config.mk - -CFLAGS += -I. -I./include $(PLATFORM_CCFLAGS) $(OPT) -CXXFLAGS += -I. -I./include $(PLATFORM_CXXFLAGS) $(OPT) - -LDFLAGS += $(PLATFORM_LDFLAGS) -LIBS += $(PLATFORM_LIBS) - -LIBOBJECTS = $(SOURCES:.cc=.o) -MEMENVOBJECTS = $(MEMENV_SOURCES:.cc=.o) - -TESTUTIL = ./util/testutil.o -TESTHARNESS = ./util/testharness.o $(TESTUTIL) - -# Note: iOS should probably be using libtool, not ar. -ifeq ($(PLATFORM), IOS) -AR=xcrun ar -endif - -TESTS = \ - arena_test \ - autocompact_test \ - bloom_test \ - c_test \ - cache_test \ - coding_test \ - corruption_test \ - crc32c_test \ - db_test \ - dbformat_test \ - env_test \ - filename_test \ - filter_block_test \ - hash_test \ - issue178_test \ - issue200_test \ - log_test \ - memenv_test \ - skiplist_test \ - table_test \ - version_edit_test \ - version_set_test \ - write_batch_test - -PROGRAMS = db_bench leveldbutil $(TESTS) -BENCHMARKS = db_bench_sqlite3 db_bench_tree_db - -LIBRARY = libleveldb.a -MEMENVLIBRARY = libmemenv.a - -default: all - -# Should we build shared libraries? -ifneq ($(PLATFORM_SHARED_EXT),) - -ifneq ($(PLATFORM_SHARED_VERSIONED),true) -SHARED1 = libleveldb.$(PLATFORM_SHARED_EXT) -SHARED2 = $(SHARED1) -SHARED3 = $(SHARED1) -SHARED = $(SHARED1) -else -# Update db.h if you change these. -SHARED_MAJOR = 1 -SHARED_MINOR = 18 -SHARED1 = libleveldb.$(PLATFORM_SHARED_EXT) -SHARED2 = $(SHARED1).$(SHARED_MAJOR) -SHARED3 = $(SHARED1).$(SHARED_MAJOR).$(SHARED_MINOR) -SHARED = $(SHARED1) $(SHARED2) $(SHARED3) -$(SHARED1): $(SHARED3) - ln -fs $(SHARED3) $(SHARED1) -$(SHARED2): $(SHARED3) - ln -fs $(SHARED3) $(SHARED2) -endif - -$(SHARED3): - $(CXX) $(LDFLAGS) $(PLATFORM_SHARED_LDFLAGS)$(SHARED2) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(SOURCES) -o $(SHARED3) $(LIBS) - -endif # PLATFORM_SHARED_EXT - -all: $(SHARED) $(LIBRARY) - -check: all $(PROGRAMS) $(TESTS) - for t in $(TESTS); do echo "***** Running $$t"; ./$$t || exit 1; done - -clean: - -rm -f $(PROGRAMS) $(BENCHMARKS) $(LIBRARY) $(SHARED) $(MEMENVLIBRARY) */*.o */*/*.o ios-x86/*/*.o ios-arm/*/*.o build_config.mk - -rm -rf ios-x86/* ios-arm/* - -$(LIBRARY): $(LIBOBJECTS) - rm -f $@ - $(AR) -rs $@ $(LIBOBJECTS) - -db_bench: db/db_bench.o $(LIBOBJECTS) $(TESTUTIL) - $(CXX) $(LDFLAGS) db/db_bench.o $(LIBOBJECTS) $(TESTUTIL) -o $@ $(LIBS) - -db_bench_sqlite3: doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL) - $(CXX) $(LDFLAGS) doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL) -o $@ -lsqlite3 $(LIBS) - -db_bench_tree_db: doc/bench/db_bench_tree_db.o $(LIBOBJECTS) $(TESTUTIL) - $(CXX) $(LDFLAGS) doc/bench/db_bench_tree_db.o $(LIBOBJECTS) $(TESTUTIL) -o $@ -lkyotocabinet $(LIBS) - -leveldbutil: db/leveldb_main.o $(LIBOBJECTS) - $(CXX) $(LDFLAGS) db/leveldb_main.o $(LIBOBJECTS) -o $@ $(LIBS) - -arena_test: util/arena_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) util/arena_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -autocompact_test: db/autocompact_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/autocompact_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -bloom_test: util/bloom_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) util/bloom_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -c_test: db/c_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/c_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -cache_test: util/cache_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) util/cache_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -coding_test: util/coding_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) util/coding_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -corruption_test: db/corruption_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/corruption_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -crc32c_test: util/crc32c_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) util/crc32c_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -db_test: db/db_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/db_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -dbformat_test: db/dbformat_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/dbformat_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -env_test: util/env_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) util/env_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -filename_test: db/filename_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/filename_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -filter_block_test: table/filter_block_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) table/filter_block_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -hash_test: util/hash_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) util/hash_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -issue178_test: issues/issue178_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) issues/issue178_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -issue200_test: issues/issue200_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) issues/issue200_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -log_test: db/log_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/log_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -table_test: table/table_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) table/table_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -skiplist_test: db/skiplist_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/skiplist_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -version_edit_test: db/version_edit_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/version_edit_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -version_set_test: db/version_set_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/version_set_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -write_batch_test: db/write_batch_test.o $(LIBOBJECTS) $(TESTHARNESS) - $(CXX) $(LDFLAGS) db/write_batch_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LIBS) - -$(MEMENVLIBRARY) : $(MEMENVOBJECTS) - rm -f $@ - $(AR) -rs $@ $(MEMENVOBJECTS) - -memenv_test : helpers/memenv/memenv_test.o $(MEMENVLIBRARY) $(LIBRARY) $(TESTHARNESS) - $(CXX) $(LDFLAGS) helpers/memenv/memenv_test.o $(MEMENVLIBRARY) $(LIBRARY) $(TESTHARNESS) -o $@ $(LIBS) - -ifeq ($(PLATFORM), IOS) -# For iOS, create universal object files to be used on both the simulator and -# a device. -PLATFORMSROOT=/Applications/Xcode.app/Contents/Developer/Platforms -SIMULATORROOT=$(PLATFORMSROOT)/iPhoneSimulator.platform/Developer -DEVICEROOT=$(PLATFORMSROOT)/iPhoneOS.platform/Developer -IOSVERSION=$(shell defaults read $(PLATFORMSROOT)/iPhoneOS.platform/version CFBundleShortVersionString) -IOSARCH=-arch armv6 -arch armv7 -arch armv7s -arch arm64 - -.cc.o: - mkdir -p ios-x86/$(dir $@) - xcrun -sdk iphonesimulator $(CXX) $(CXXFLAGS) -isysroot $(SIMULATORROOT)/SDKs/iPhoneSimulator$(IOSVERSION).sdk -arch i686 -arch x86_64 -c $< -o ios-x86/$@ - mkdir -p ios-arm/$(dir $@) - xcrun -sdk iphoneos $(CXX) $(CXXFLAGS) -isysroot $(DEVICEROOT)/SDKs/iPhoneOS$(IOSVERSION).sdk $(IOSARCH) -c $< -o ios-arm/$@ - xcrun lipo ios-x86/$@ ios-arm/$@ -create -output $@ - -.c.o: - mkdir -p ios-x86/$(dir $@) - xcrun -sdk iphonesimulator $(CC) $(CFLAGS) -isysroot $(SIMULATORROOT)/SDKs/iPhoneSimulator$(IOSVERSION).sdk -arch i686 -arch x86_64 -c $< -o ios-x86/$@ - mkdir -p ios-arm/$(dir $@) - xcrun -sdk iphoneos $(CC) $(CFLAGS) -isysroot $(DEVICEROOT)/SDKs/iPhoneOS$(IOSVERSION).sdk $(IOSARCH) -c $< -o ios-arm/$@ - xcrun lipo ios-x86/$@ ios-arm/$@ -create -output $@ - -else -.cc.o: - $(CXX) $(CXXFLAGS) -c $< -o $@ - -.c.o: - $(CC) $(CFLAGS) -c $< -o $@ -endif diff --git a/leveldb-1.18/NEWS b/leveldb-1.18/NEWS deleted file mode 100644 index 3fd9924..0000000 --- a/leveldb-1.18/NEWS +++ /dev/null @@ -1,17 +0,0 @@ -Release 1.2 2011-05-16 ----------------------- - -Fixes for larger databases (tested up to one billion 100-byte entries, -i.e., ~100GB). - -(1) Place hard limit on number of level-0 files. This fixes errors -of the form "too many open files". - -(2) Fixed memtable management. Before the fix, a heavy write burst -could cause unbounded memory usage. - -A fix for a logging bug where the reader would incorrectly complain -about corruption. - -Allow public access to WriteBatch contents so that users can easily -wrap a DB. diff --git a/leveldb-1.18/README b/leveldb-1.18/README deleted file mode 100644 index 3618ade..0000000 --- a/leveldb-1.18/README +++ /dev/null @@ -1,51 +0,0 @@ -leveldb: A key-value store -Authors: Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com) - -The code under this directory implements a system for maintaining a -persistent key/value store. - -See doc/index.html for more explanation. -See doc/impl.html for a brief overview of the implementation. - -The public interface is in include/*.h. Callers should not include or -rely on the details of any other header files in this package. Those -internal APIs may be changed without warning. - -Guide to header files: - -include/db.h - Main interface to the DB: Start here - -include/options.h - Control over the behavior of an entire database, and also - control over the behavior of individual reads and writes. - -include/comparator.h - Abstraction for user-specified comparison function. If you want - just bytewise comparison of keys, you can use the default comparator, - but clients can write their own comparator implementations if they - want custom ordering (e.g. to handle different character - encodings, etc.) - -include/iterator.h - Interface for iterating over data. You can get an iterator - from a DB object. - -include/write_batch.h - Interface for atomically applying multiple updates to a database. - -include/slice.h - A simple module for maintaining a pointer and a length into some - other byte array. - -include/status.h - Status is returned from many of the public interfaces and is used - to report success and various kinds of errors. - -include/env.h - Abstraction of the OS environment. A posix implementation of - this interface is in util/env_posix.cc - -include/table.h -include/table_builder.h - Lower-level modules that most clients probably won't use directly diff --git a/leveldb-1.18/README.md b/leveldb-1.18/README.md deleted file mode 100644 index 480affb..0000000 --- a/leveldb-1.18/README.md +++ /dev/null @@ -1,138 +0,0 @@ -**LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.** - -Authors: Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com) - -# Features - * Keys and values are arbitrary byte arrays. - * Data is stored sorted by key. - * Callers can provide a custom comparison function to override the sort order. - * The basic operations are `Put(key,value)`, `Get(key)`, `Delete(key)`. - * Multiple changes can be made in one atomic batch. - * Users can create a transient snapshot to get a consistent view of data. - * Forward and backward iteration is supported over the data. - * Data is automatically compressed using the [Snappy compression library](http://code.google.com/p/snappy). - * External activity (file system operations etc.) is relayed through a virtual interface so users can customize the operating system interactions. - * [Detailed documentation](http://htmlpreview.github.io/?https://github.com/google/leveldb/blob/master/doc/index.html) about how to use the library is included with the source code. - - -# Limitations - * This is not a SQL database. It does not have a relational data model, it does not support SQL queries, and it has no support for indexes. - * Only a single process (possibly multi-threaded) can access a particular database at a time. - * There is no client-server support builtin to the library. An application that needs such support will have to wrap their own server around the library. - -# Performance - -Here is a performance report (with explanations) from the run of the -included db_bench program. The results are somewhat noisy, but should -be enough to get a ballpark performance estimate. - -## Setup - -We use a database with a million entries. Each entry has a 16 byte -key, and a 100 byte value. Values used by the benchmark compress to -about half their original size. - - LevelDB: version 1.1 - Date: Sun May 1 12:11:26 2011 - CPU: 4 x Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz - CPUCache: 4096 KB - Keys: 16 bytes each - Values: 100 bytes each (50 bytes after compression) - Entries: 1000000 - Raw Size: 110.6 MB (estimated) - File Size: 62.9 MB (estimated) - -## Write performance - -The "fill" benchmarks create a brand new database, in either -sequential, or random order. The "fillsync" benchmark flushes data -from the operating system to the disk after every operation; the other -write operations leave the data sitting in the operating system buffer -cache for a while. The "overwrite" benchmark does random writes that -update existing keys in the database. - - fillseq : 1.765 micros/op; 62.7 MB/s - fillsync : 268.409 micros/op; 0.4 MB/s (10000 ops) - fillrandom : 2.460 micros/op; 45.0 MB/s - overwrite : 2.380 micros/op; 46.5 MB/s - -Each "op" above corresponds to a write of a single key/value pair. -I.e., a random write benchmark goes at approximately 400,000 writes per second. - -Each "fillsync" operation costs much less (0.3 millisecond) -than a disk seek (typically 10 milliseconds). We suspect that this is -because the hard disk itself is buffering the update in its memory and -responding before the data has been written to the platter. This may -or may not be safe based on whether or not the hard disk has enough -power to save its memory in the event of a power failure. - -## Read performance - -We list the performance of reading sequentially in both the forward -and reverse direction, and also the performance of a random lookup. -Note that the database created by the benchmark is quite small. -Therefore the report characterizes the performance of leveldb when the -working set fits in memory. The cost of reading a piece of data that -is not present in the operating system buffer cache will be dominated -by the one or two disk seeks needed to fetch the data from disk. -Write performance will be mostly unaffected by whether or not the -working set fits in memory. - - readrandom : 16.677 micros/op; (approximately 60,000 reads per second) - readseq : 0.476 micros/op; 232.3 MB/s - readreverse : 0.724 micros/op; 152.9 MB/s - -LevelDB compacts its underlying storage data in the background to -improve read performance. The results listed above were done -immediately after a lot of random writes. The results after -compactions (which are usually triggered automatically) are better. - - readrandom : 11.602 micros/op; (approximately 85,000 reads per second) - readseq : 0.423 micros/op; 261.8 MB/s - readreverse : 0.663 micros/op; 166.9 MB/s - -Some of the high cost of reads comes from repeated decompression of blocks -read from disk. If we supply enough cache to the leveldb so it can hold the -uncompressed blocks in memory, the read performance improves again: - - readrandom : 9.775 micros/op; (approximately 100,000 reads per second before compaction) - readrandom : 5.215 micros/op; (approximately 190,000 reads per second after compaction) - -## Repository contents - -See doc/index.html for more explanation. See doc/impl.html for a brief overview of the implementation. - -The public interface is in include/*.h. Callers should not include or -rely on the details of any other header files in this package. Those -internal APIs may be changed without warning. - -Guide to header files: - -* **include/db.h**: Main interface to the DB: Start here - -* **include/options.h**: Control over the behavior of an entire database, -and also control over the behavior of individual reads and writes. - -* **include/comparator.h**: Abstraction for user-specified comparison function. -If you want just bytewise comparison of keys, you can use the default -comparator, but clients can write their own comparator implementations if they -want custom ordering (e.g. to handle different character encodings, etc.) - -* **include/iterator.h**: Interface for iterating over data. You can get -an iterator from a DB object. - -* **include/write_batch.h**: Interface for atomically applying multiple -updates to a database. - -* **include/slice.h**: A simple module for maintaining a pointer and a -length into some other byte array. - -* **include/status.h**: Status is returned from many of the public interfaces -and is used to report success and various kinds of errors. - -* **include/env.h**: -Abstraction of the OS environment. A posix implementation of this interface is -in util/env_posix.cc - -* **include/table.h, include/table_builder.h**: Lower-level modules that most -clients probably won't use directly diff --git a/leveldb-1.18/TODO b/leveldb-1.18/TODO deleted file mode 100644 index e603c07..0000000 --- a/leveldb-1.18/TODO +++ /dev/null @@ -1,14 +0,0 @@ -ss -- Stats - -db -- Maybe implement DB::BulkDeleteForRange(start_key, end_key) - that would blow away files whose ranges are entirely contained - within [start_key..end_key]? For Chrome, deletion of obsolete - object stores, etc. can be done in the background anyway, so - probably not that important. -- There have been requests for MultiGet. - -After a range is completely deleted, what gets rid of the -corresponding files if we do no future changes to that range. Make -the conditions for triggering compactions fire in more situations? diff --git a/leveldb-1.18/build_detect_platform b/leveldb-1.18/build_detect_platform deleted file mode 100755 index bb76c4f..0000000 --- a/leveldb-1.18/build_detect_platform +++ /dev/null @@ -1,228 +0,0 @@ -#!/bin/sh -# -# Detects OS we're compiling on and outputs a file specified by the first -# argument, which in turn gets read while processing Makefile. -# -# The output will set the following variables: -# CC C Compiler path -# CXX C++ Compiler path -# PLATFORM_LDFLAGS Linker flags -# PLATFORM_LIBS Libraries flags -# PLATFORM_SHARED_EXT Extension for shared libraries -# PLATFORM_SHARED_LDFLAGS Flags for building shared library -# This flag is embedded just before the name -# of the shared library without intervening spaces -# PLATFORM_SHARED_CFLAGS Flags for compiling objects for shared library -# PLATFORM_CCFLAGS C compiler flags -# PLATFORM_CXXFLAGS C++ compiler flags. Will contain: -# PLATFORM_SHARED_VERSIONED Set to 'true' if platform supports versioned -# shared libraries, empty otherwise. -# -# The PLATFORM_CCFLAGS and PLATFORM_CXXFLAGS might include the following: -# -# -DLEVELDB_ATOMIC_PRESENT if is present -# -DLEVELDB_PLATFORM_POSIX for Posix-based platforms -# -DSNAPPY if the Snappy library is present -# - -OUTPUT=$1 -PREFIX=$2 -if test -z "$OUTPUT" || test -z "$PREFIX"; then - echo "usage: $0 " >&2 - exit 1 -fi - -# Delete existing output, if it exists -rm -f $OUTPUT -touch $OUTPUT - -if test -z "$CC"; then - CC=cc -fi - -if test -z "$CXX"; then - CXX=g++ -fi - -if test -z "$TMPDIR"; then - TMPDIR=/tmp -fi - -# Detect OS -if test -z "$TARGET_OS"; then - TARGET_OS=`uname -s` -fi - -COMMON_FLAGS= -CROSS_COMPILE= -PLATFORM_CCFLAGS= -PLATFORM_CXXFLAGS= -PLATFORM_LDFLAGS= -PLATFORM_LIBS= -PLATFORM_SHARED_EXT="so" -PLATFORM_SHARED_LDFLAGS="-shared -Wl,-soname -Wl," -PLATFORM_SHARED_CFLAGS="-fPIC" -PLATFORM_SHARED_VERSIONED=true - -MEMCMP_FLAG= -if [ "$CXX" = "g++" ]; then - # Use libc's memcmp instead of GCC's memcmp. This results in ~40% - # performance improvement on readrandom under gcc 4.4.3 on Linux/x86. - MEMCMP_FLAG="-fno-builtin-memcmp" -fi - -case "$TARGET_OS" in - CYGWIN_*) - PLATFORM=OS_LINUX - COMMON_FLAGS="$MEMCMP_FLAG -lpthread -DOS_LINUX -DCYGWIN" - PLATFORM_LDFLAGS="-lpthread" - PORT_FILE=port/port_posix.cc - ;; - Darwin) - PLATFORM=OS_MACOSX - COMMON_FLAGS="$MEMCMP_FLAG -DOS_MACOSX" - PLATFORM_SHARED_EXT=dylib - [ -z "$INSTALL_PATH" ] && INSTALL_PATH=`pwd` - PLATFORM_SHARED_LDFLAGS="-dynamiclib -install_name $INSTALL_PATH/" - PORT_FILE=port/port_posix.cc - ;; - Linux) - PLATFORM=OS_LINUX - COMMON_FLAGS="$MEMCMP_FLAG -pthread -DOS_LINUX" - PLATFORM_LDFLAGS="-pthread" - PORT_FILE=port/port_posix.cc - ;; - SunOS) - PLATFORM=OS_SOLARIS - COMMON_FLAGS="$MEMCMP_FLAG -D_REENTRANT -DOS_SOLARIS" - PLATFORM_LIBS="-lpthread -lrt" - PORT_FILE=port/port_posix.cc - ;; - FreeBSD) - PLATFORM=OS_FREEBSD - COMMON_FLAGS="$MEMCMP_FLAG -D_REENTRANT -DOS_FREEBSD" - PLATFORM_LIBS="-lpthread" - PORT_FILE=port/port_posix.cc - ;; - NetBSD) - PLATFORM=OS_NETBSD - COMMON_FLAGS="$MEMCMP_FLAG -D_REENTRANT -DOS_NETBSD" - PLATFORM_LIBS="-lpthread -lgcc_s" - PORT_FILE=port/port_posix.cc - ;; - OpenBSD) - PLATFORM=OS_OPENBSD - COMMON_FLAGS="$MEMCMP_FLAG -D_REENTRANT -DOS_OPENBSD" - PLATFORM_LDFLAGS="-pthread" - PORT_FILE=port/port_posix.cc - ;; - DragonFly) - PLATFORM=OS_DRAGONFLYBSD - COMMON_FLAGS="$MEMCMP_FLAG -D_REENTRANT -DOS_DRAGONFLYBSD" - PLATFORM_LIBS="-lpthread" - PORT_FILE=port/port_posix.cc - ;; - OS_ANDROID_CROSSCOMPILE) - PLATFORM=OS_ANDROID - COMMON_FLAGS="$MEMCMP_FLAG -D_REENTRANT -DOS_ANDROID -DLEVELDB_PLATFORM_POSIX" - PLATFORM_LDFLAGS="" # All pthread features are in the Android C library - PORT_FILE=port/port_posix.cc - CROSS_COMPILE=true - ;; - HP-UX) - PLATFORM=OS_HPUX - COMMON_FLAGS="$MEMCMP_FLAG -D_REENTRANT -DOS_HPUX" - PLATFORM_LDFLAGS="-pthread" - PORT_FILE=port/port_posix.cc - # man ld: +h internal_name - PLATFORM_SHARED_LDFLAGS="-shared -Wl,+h -Wl," - ;; - IOS) - PLATFORM=IOS - COMMON_FLAGS="$MEMCMP_FLAG -DOS_MACOSX" - [ -z "$INSTALL_PATH" ] && INSTALL_PATH=`pwd` - PORT_FILE=port/port_posix.cc - PLATFORM_SHARED_EXT= - PLATFORM_SHARED_LDFLAGS= - PLATFORM_SHARED_CFLAGS= - PLATFORM_SHARED_VERSIONED= - ;; - *) - echo "Unknown platform!" >&2 - exit 1 -esac - -# We want to make a list of all cc files within util, db, table, and helpers -# except for the test and benchmark files. By default, find will output a list -# of all files matching either rule, so we need to append -print to make the -# prune take effect. -DIRS="$PREFIX/db $PREFIX/util $PREFIX/table" - -set -f # temporarily disable globbing so that our patterns aren't expanded -PRUNE_TEST="-name *test*.cc -prune" -PRUNE_BENCH="-name *_bench.cc -prune" -PRUNE_TOOL="-name leveldb_main.cc -prune" -PORTABLE_FILES=`find $DIRS $PRUNE_TEST -o $PRUNE_BENCH -o $PRUNE_TOOL -o -name '*.cc' -print | sort | sed "s,^$PREFIX/,," | tr "\n" " "` - -set +f # re-enable globbing - -# The sources consist of the portable files, plus the platform-specific port -# file. -echo "SOURCES=$PORTABLE_FILES $PORT_FILE" >> $OUTPUT -echo "MEMENV_SOURCES=helpers/memenv/memenv.cc" >> $OUTPUT - -if [ "$CROSS_COMPILE" = "true" ]; then - # Cross-compiling; do not try any compilation tests. - true -else - CXXOUTPUT="${TMPDIR}/leveldb_build_detect_platform-cxx.$$" - - # If -std=c++0x works, use as fallback for when memory barriers - # are not available. - $CXX $CXXFLAGS -std=c++0x -x c++ - -o $CXXOUTPUT 2>/dev/null < - int main() {} -EOF - if [ "$?" = 0 ]; then - COMMON_FLAGS="$COMMON_FLAGS -DLEVELDB_PLATFORM_POSIX -DLEVELDB_ATOMIC_PRESENT" - PLATFORM_CXXFLAGS="-std=c++0x" - else - COMMON_FLAGS="$COMMON_FLAGS -DLEVELDB_PLATFORM_POSIX" - fi - - # Test whether Snappy library is installed - # http://code.google.com/p/snappy/ - $CXX $CXXFLAGS -x c++ - -o $CXXOUTPUT 2>/dev/null < - int main() {} -EOF - if [ "$?" = 0 ]; then - COMMON_FLAGS="$COMMON_FLAGS -DSNAPPY" - PLATFORM_LIBS="$PLATFORM_LIBS -lsnappy" - fi - - # Test whether tcmalloc is available - $CXX $CXXFLAGS -x c++ - -o $CXXOUTPUT -ltcmalloc 2>/dev/null </dev/null -fi - -PLATFORM_CCFLAGS="$PLATFORM_CCFLAGS $COMMON_FLAGS" -PLATFORM_CXXFLAGS="$PLATFORM_CXXFLAGS $COMMON_FLAGS" - -echo "CC=$CC" >> $OUTPUT -echo "CXX=$CXX" >> $OUTPUT -echo "PLATFORM=$PLATFORM" >> $OUTPUT -echo "PLATFORM_LDFLAGS=$PLATFORM_LDFLAGS" >> $OUTPUT -echo "PLATFORM_LIBS=$PLATFORM_LIBS" >> $OUTPUT -echo "PLATFORM_CCFLAGS=$PLATFORM_CCFLAGS" >> $OUTPUT -echo "PLATFORM_CXXFLAGS=$PLATFORM_CXXFLAGS" >> $OUTPUT -echo "PLATFORM_SHARED_CFLAGS=$PLATFORM_SHARED_CFLAGS" >> $OUTPUT -echo "PLATFORM_SHARED_EXT=$PLATFORM_SHARED_EXT" >> $OUTPUT -echo "PLATFORM_SHARED_LDFLAGS=$PLATFORM_SHARED_LDFLAGS" >> $OUTPUT -echo "PLATFORM_SHARED_VERSIONED=$PLATFORM_SHARED_VERSIONED" >> $OUTPUT diff --git a/leveldb-1.18/db/autocompact_test.cc b/leveldb-1.18/db/autocompact_test.cc deleted file mode 100644 index d20a236..0000000 --- a/leveldb-1.18/db/autocompact_test.cc +++ /dev/null @@ -1,118 +0,0 @@ -// Copyright (c) 2013 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/db.h" -#include "db/db_impl.h" -#include "leveldb/cache.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace leveldb { - -class AutoCompactTest { - public: - std::string dbname_; - Cache* tiny_cache_; - Options options_; - DB* db_; - - AutoCompactTest() { - dbname_ = test::TmpDir() + "/autocompact_test"; - tiny_cache_ = NewLRUCache(100); - options_.block_cache = tiny_cache_; - DestroyDB(dbname_, options_); - options_.create_if_missing = true; - options_.compression = kNoCompression; - ASSERT_OK(DB::Open(options_, dbname_, &db_)); - } - - ~AutoCompactTest() { - delete db_; - DestroyDB(dbname_, Options()); - delete tiny_cache_; - } - - std::string Key(int i) { - char buf[100]; - snprintf(buf, sizeof(buf), "key%06d", i); - return std::string(buf); - } - - uint64_t Size(const Slice& start, const Slice& limit) { - Range r(start, limit); - uint64_t size; - db_->GetApproximateSizes(&r, 1, &size); - return size; - } - - void DoReads(int n); -}; - -static const int kValueSize = 200 * 1024; -static const int kTotalSize = 100 * 1024 * 1024; -static const int kCount = kTotalSize / kValueSize; - -// Read through the first n keys repeatedly and check that they get -// compacted (verified by checking the size of the key space). -void AutoCompactTest::DoReads(int n) { - std::string value(kValueSize, 'x'); - DBImpl* dbi = reinterpret_cast(db_); - - // Fill database - for (int i = 0; i < kCount; i++) { - ASSERT_OK(db_->Put(WriteOptions(), Key(i), value)); - } - ASSERT_OK(dbi->TEST_CompactMemTable()); - - // Delete everything - for (int i = 0; i < kCount; i++) { - ASSERT_OK(db_->Delete(WriteOptions(), Key(i))); - } - ASSERT_OK(dbi->TEST_CompactMemTable()); - - // Get initial measurement of the space we will be reading. - const int64_t initial_size = Size(Key(0), Key(n)); - const int64_t initial_other_size = Size(Key(n), Key(kCount)); - - // Read until size drops significantly. - std::string limit_key = Key(n); - for (int read = 0; true; read++) { - ASSERT_LT(read, 100) << "Taking too long to compact"; - Iterator* iter = db_->NewIterator(ReadOptions()); - for (iter->SeekToFirst(); - iter->Valid() && iter->key().ToString() < limit_key; - iter->Next()) { - // Drop data - } - delete iter; - // Wait a little bit to allow any triggered compactions to complete. - Env::Default()->SleepForMicroseconds(1000000); - uint64_t size = Size(Key(0), Key(n)); - fprintf(stderr, "iter %3d => %7.3f MB [other %7.3f MB]\n", - read+1, size/1048576.0, Size(Key(n), Key(kCount))/1048576.0); - if (size <= initial_size/10) { - break; - } - } - - // Verify that the size of the key space not touched by the reads - // is pretty much unchanged. - const int64_t final_other_size = Size(Key(n), Key(kCount)); - ASSERT_LE(final_other_size, initial_other_size + 1048576); - ASSERT_GE(final_other_size, initial_other_size/5 - 1048576); -} - -TEST(AutoCompactTest, ReadAll) { - DoReads(kCount); -} - -TEST(AutoCompactTest, ReadHalf) { - DoReads(kCount/2); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/builder.cc b/leveldb-1.18/db/builder.cc deleted file mode 100644 index f419882..0000000 --- a/leveldb-1.18/db/builder.cc +++ /dev/null @@ -1,88 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/builder.h" - -#include "db/filename.h" -#include "db/dbformat.h" -#include "db/table_cache.h" -#include "db/version_edit.h" -#include "leveldb/db.h" -#include "leveldb/env.h" -#include "leveldb/iterator.h" - -namespace leveldb { - -Status BuildTable(const std::string& dbname, - Env* env, - const Options& options, - TableCache* table_cache, - Iterator* iter, - FileMetaData* meta) { - Status s; - meta->file_size = 0; - iter->SeekToFirst(); - - std::string fname = TableFileName(dbname, meta->number); - if (iter->Valid()) { - WritableFile* file; - s = env->NewWritableFile(fname, &file); - if (!s.ok()) { - return s; - } - - TableBuilder* builder = new TableBuilder(options, file); - meta->smallest.DecodeFrom(iter->key()); - for (; iter->Valid(); iter->Next()) { - Slice key = iter->key(); - meta->largest.DecodeFrom(key); - builder->Add(key, iter->value()); - } - - // Finish and check for builder errors - if (s.ok()) { - s = builder->Finish(); - if (s.ok()) { - meta->file_size = builder->FileSize(); - assert(meta->file_size > 0); - } - } else { - builder->Abandon(); - } - delete builder; - - // Finish and check for file errors - if (s.ok()) { - s = file->Sync(); - } - if (s.ok()) { - s = file->Close(); - } - delete file; - file = NULL; - - if (s.ok()) { - // Verify that the table is usable - Iterator* it = table_cache->NewIterator(ReadOptions(), - meta->number, - meta->file_size); - s = it->status(); - delete it; - } - } - - // Check for input iterator errors - if (!iter->status().ok()) { - s = iter->status(); - } - - if (s.ok() && meta->file_size > 0) { - // Keep it - } else { - env->DeleteFile(fname); - } - return s; -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/builder.h b/leveldb-1.18/db/builder.h deleted file mode 100644 index 62431fc..0000000 --- a/leveldb-1.18/db/builder.h +++ /dev/null @@ -1,34 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_BUILDER_H_ -#define STORAGE_LEVELDB_DB_BUILDER_H_ - -#include "leveldb/status.h" - -namespace leveldb { - -struct Options; -struct FileMetaData; - -class Env; -class Iterator; -class TableCache; -class VersionEdit; - -// Build a Table file from the contents of *iter. The generated file -// will be named according to meta->number. On success, the rest of -// *meta will be filled with metadata about the generated table. -// If no data is present in *iter, meta->file_size will be set to -// zero, and no Table file will be produced. -extern Status BuildTable(const std::string& dbname, - Env* env, - const Options& options, - TableCache* table_cache, - Iterator* iter, - FileMetaData* meta); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_BUILDER_H_ diff --git a/leveldb-1.18/db/c.cc b/leveldb-1.18/db/c.cc deleted file mode 100644 index 08ff0ad..0000000 --- a/leveldb-1.18/db/c.cc +++ /dev/null @@ -1,595 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/c.h" - -#include -#include -#include "leveldb/cache.h" -#include "leveldb/comparator.h" -#include "leveldb/db.h" -#include "leveldb/env.h" -#include "leveldb/filter_policy.h" -#include "leveldb/iterator.h" -#include "leveldb/options.h" -#include "leveldb/status.h" -#include "leveldb/write_batch.h" - -using leveldb::Cache; -using leveldb::Comparator; -using leveldb::CompressionType; -using leveldb::DB; -using leveldb::Env; -using leveldb::FileLock; -using leveldb::FilterPolicy; -using leveldb::Iterator; -using leveldb::kMajorVersion; -using leveldb::kMinorVersion; -using leveldb::Logger; -using leveldb::NewBloomFilterPolicy; -using leveldb::NewLRUCache; -using leveldb::Options; -using leveldb::RandomAccessFile; -using leveldb::Range; -using leveldb::ReadOptions; -using leveldb::SequentialFile; -using leveldb::Slice; -using leveldb::Snapshot; -using leveldb::Status; -using leveldb::WritableFile; -using leveldb::WriteBatch; -using leveldb::WriteOptions; - -extern "C" { - -struct leveldb_t { DB* rep; }; -struct leveldb_iterator_t { Iterator* rep; }; -struct leveldb_writebatch_t { WriteBatch rep; }; -struct leveldb_snapshot_t { const Snapshot* rep; }; -struct leveldb_readoptions_t { ReadOptions rep; }; -struct leveldb_writeoptions_t { WriteOptions rep; }; -struct leveldb_options_t { Options rep; }; -struct leveldb_cache_t { Cache* rep; }; -struct leveldb_seqfile_t { SequentialFile* rep; }; -struct leveldb_randomfile_t { RandomAccessFile* rep; }; -struct leveldb_writablefile_t { WritableFile* rep; }; -struct leveldb_logger_t { Logger* rep; }; -struct leveldb_filelock_t { FileLock* rep; }; - -struct leveldb_comparator_t : public Comparator { - void* state_; - void (*destructor_)(void*); - int (*compare_)( - void*, - const char* a, size_t alen, - const char* b, size_t blen); - const char* (*name_)(void*); - - virtual ~leveldb_comparator_t() { - (*destructor_)(state_); - } - - virtual int Compare(const Slice& a, const Slice& b) const { - return (*compare_)(state_, a.data(), a.size(), b.data(), b.size()); - } - - virtual const char* Name() const { - return (*name_)(state_); - } - - // No-ops since the C binding does not support key shortening methods. - virtual void FindShortestSeparator(std::string*, const Slice&) const { } - virtual void FindShortSuccessor(std::string* key) const { } -}; - -struct leveldb_filterpolicy_t : public FilterPolicy { - void* state_; - void (*destructor_)(void*); - const char* (*name_)(void*); - char* (*create_)( - void*, - const char* const* key_array, const size_t* key_length_array, - int num_keys, - size_t* filter_length); - unsigned char (*key_match_)( - void*, - const char* key, size_t length, - const char* filter, size_t filter_length); - - virtual ~leveldb_filterpolicy_t() { - (*destructor_)(state_); - } - - virtual const char* Name() const { - return (*name_)(state_); - } - - virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const { - std::vector key_pointers(n); - std::vector key_sizes(n); - for (int i = 0; i < n; i++) { - key_pointers[i] = keys[i].data(); - key_sizes[i] = keys[i].size(); - } - size_t len; - char* filter = (*create_)(state_, &key_pointers[0], &key_sizes[0], n, &len); - dst->append(filter, len); - free(filter); - } - - virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const { - return (*key_match_)(state_, key.data(), key.size(), - filter.data(), filter.size()); - } -}; - -struct leveldb_env_t { - Env* rep; - bool is_default; -}; - -static bool SaveError(char** errptr, const Status& s) { - assert(errptr != NULL); - if (s.ok()) { - return false; - } else if (*errptr == NULL) { - *errptr = strdup(s.ToString().c_str()); - } else { - // TODO(sanjay): Merge with existing error? - free(*errptr); - *errptr = strdup(s.ToString().c_str()); - } - return true; -} - -static char* CopyString(const std::string& str) { - char* result = reinterpret_cast(malloc(sizeof(char) * str.size())); - memcpy(result, str.data(), sizeof(char) * str.size()); - return result; -} - -leveldb_t* leveldb_open( - const leveldb_options_t* options, - const char* name, - char** errptr) { - DB* db; - if (SaveError(errptr, DB::Open(options->rep, std::string(name), &db))) { - return NULL; - } - leveldb_t* result = new leveldb_t; - result->rep = db; - return result; -} - -void leveldb_close(leveldb_t* db) { - delete db->rep; - delete db; -} - -void leveldb_put( - leveldb_t* db, - const leveldb_writeoptions_t* options, - const char* key, size_t keylen, - const char* val, size_t vallen, - char** errptr) { - SaveError(errptr, - db->rep->Put(options->rep, Slice(key, keylen), Slice(val, vallen))); -} - -void leveldb_delete( - leveldb_t* db, - const leveldb_writeoptions_t* options, - const char* key, size_t keylen, - char** errptr) { - SaveError(errptr, db->rep->Delete(options->rep, Slice(key, keylen))); -} - - -void leveldb_write( - leveldb_t* db, - const leveldb_writeoptions_t* options, - leveldb_writebatch_t* batch, - char** errptr) { - SaveError(errptr, db->rep->Write(options->rep, &batch->rep)); -} - -char* leveldb_get( - leveldb_t* db, - const leveldb_readoptions_t* options, - const char* key, size_t keylen, - size_t* vallen, - char** errptr) { - char* result = NULL; - std::string tmp; - Status s = db->rep->Get(options->rep, Slice(key, keylen), &tmp); - if (s.ok()) { - *vallen = tmp.size(); - result = CopyString(tmp); - } else { - *vallen = 0; - if (!s.IsNotFound()) { - SaveError(errptr, s); - } - } - return result; -} - -leveldb_iterator_t* leveldb_create_iterator( - leveldb_t* db, - const leveldb_readoptions_t* options) { - leveldb_iterator_t* result = new leveldb_iterator_t; - result->rep = db->rep->NewIterator(options->rep); - return result; -} - -const leveldb_snapshot_t* leveldb_create_snapshot( - leveldb_t* db) { - leveldb_snapshot_t* result = new leveldb_snapshot_t; - result->rep = db->rep->GetSnapshot(); - return result; -} - -void leveldb_release_snapshot( - leveldb_t* db, - const leveldb_snapshot_t* snapshot) { - db->rep->ReleaseSnapshot(snapshot->rep); - delete snapshot; -} - -char* leveldb_property_value( - leveldb_t* db, - const char* propname) { - std::string tmp; - if (db->rep->GetProperty(Slice(propname), &tmp)) { - // We use strdup() since we expect human readable output. - return strdup(tmp.c_str()); - } else { - return NULL; - } -} - -void leveldb_approximate_sizes( - leveldb_t* db, - int num_ranges, - const char* const* range_start_key, const size_t* range_start_key_len, - const char* const* range_limit_key, const size_t* range_limit_key_len, - uint64_t* sizes) { - Range* ranges = new Range[num_ranges]; - for (int i = 0; i < num_ranges; i++) { - ranges[i].start = Slice(range_start_key[i], range_start_key_len[i]); - ranges[i].limit = Slice(range_limit_key[i], range_limit_key_len[i]); - } - db->rep->GetApproximateSizes(ranges, num_ranges, sizes); - delete[] ranges; -} - -void leveldb_compact_range( - leveldb_t* db, - const char* start_key, size_t start_key_len, - const char* limit_key, size_t limit_key_len) { - Slice a, b; - db->rep->CompactRange( - // Pass NULL Slice if corresponding "const char*" is NULL - (start_key ? (a = Slice(start_key, start_key_len), &a) : NULL), - (limit_key ? (b = Slice(limit_key, limit_key_len), &b) : NULL)); -} - -void leveldb_destroy_db( - const leveldb_options_t* options, - const char* name, - char** errptr) { - SaveError(errptr, DestroyDB(name, options->rep)); -} - -void leveldb_repair_db( - const leveldb_options_t* options, - const char* name, - char** errptr) { - SaveError(errptr, RepairDB(name, options->rep)); -} - -void leveldb_iter_destroy(leveldb_iterator_t* iter) { - delete iter->rep; - delete iter; -} - -unsigned char leveldb_iter_valid(const leveldb_iterator_t* iter) { - return iter->rep->Valid(); -} - -void leveldb_iter_seek_to_first(leveldb_iterator_t* iter) { - iter->rep->SeekToFirst(); -} - -void leveldb_iter_seek_to_last(leveldb_iterator_t* iter) { - iter->rep->SeekToLast(); -} - -void leveldb_iter_seek(leveldb_iterator_t* iter, const char* k, size_t klen) { - iter->rep->Seek(Slice(k, klen)); -} - -void leveldb_iter_next(leveldb_iterator_t* iter) { - iter->rep->Next(); -} - -void leveldb_iter_prev(leveldb_iterator_t* iter) { - iter->rep->Prev(); -} - -const char* leveldb_iter_key(const leveldb_iterator_t* iter, size_t* klen) { - Slice s = iter->rep->key(); - *klen = s.size(); - return s.data(); -} - -const char* leveldb_iter_value(const leveldb_iterator_t* iter, size_t* vlen) { - Slice s = iter->rep->value(); - *vlen = s.size(); - return s.data(); -} - -void leveldb_iter_get_error(const leveldb_iterator_t* iter, char** errptr) { - SaveError(errptr, iter->rep->status()); -} - -leveldb_writebatch_t* leveldb_writebatch_create() { - return new leveldb_writebatch_t; -} - -void leveldb_writebatch_destroy(leveldb_writebatch_t* b) { - delete b; -} - -void leveldb_writebatch_clear(leveldb_writebatch_t* b) { - b->rep.Clear(); -} - -void leveldb_writebatch_put( - leveldb_writebatch_t* b, - const char* key, size_t klen, - const char* val, size_t vlen) { - b->rep.Put(Slice(key, klen), Slice(val, vlen)); -} - -void leveldb_writebatch_delete( - leveldb_writebatch_t* b, - const char* key, size_t klen) { - b->rep.Delete(Slice(key, klen)); -} - -void leveldb_writebatch_iterate( - leveldb_writebatch_t* b, - void* state, - void (*put)(void*, const char* k, size_t klen, const char* v, size_t vlen), - void (*deleted)(void*, const char* k, size_t klen)) { - class H : public WriteBatch::Handler { - public: - void* state_; - void (*put_)(void*, const char* k, size_t klen, const char* v, size_t vlen); - void (*deleted_)(void*, const char* k, size_t klen); - virtual void Put(const Slice& key, const Slice& value) { - (*put_)(state_, key.data(), key.size(), value.data(), value.size()); - } - virtual void Delete(const Slice& key) { - (*deleted_)(state_, key.data(), key.size()); - } - }; - H handler; - handler.state_ = state; - handler.put_ = put; - handler.deleted_ = deleted; - b->rep.Iterate(&handler); -} - -leveldb_options_t* leveldb_options_create() { - return new leveldb_options_t; -} - -void leveldb_options_destroy(leveldb_options_t* options) { - delete options; -} - -void leveldb_options_set_comparator( - leveldb_options_t* opt, - leveldb_comparator_t* cmp) { - opt->rep.comparator = cmp; -} - -void leveldb_options_set_filter_policy( - leveldb_options_t* opt, - leveldb_filterpolicy_t* policy) { - opt->rep.filter_policy = policy; -} - -void leveldb_options_set_create_if_missing( - leveldb_options_t* opt, unsigned char v) { - opt->rep.create_if_missing = v; -} - -void leveldb_options_set_error_if_exists( - leveldb_options_t* opt, unsigned char v) { - opt->rep.error_if_exists = v; -} - -void leveldb_options_set_paranoid_checks( - leveldb_options_t* opt, unsigned char v) { - opt->rep.paranoid_checks = v; -} - -void leveldb_options_set_env(leveldb_options_t* opt, leveldb_env_t* env) { - opt->rep.env = (env ? env->rep : NULL); -} - -void leveldb_options_set_info_log(leveldb_options_t* opt, leveldb_logger_t* l) { - opt->rep.info_log = (l ? l->rep : NULL); -} - -void leveldb_options_set_write_buffer_size(leveldb_options_t* opt, size_t s) { - opt->rep.write_buffer_size = s; -} - -void leveldb_options_set_max_open_files(leveldb_options_t* opt, int n) { - opt->rep.max_open_files = n; -} - -void leveldb_options_set_cache(leveldb_options_t* opt, leveldb_cache_t* c) { - opt->rep.block_cache = c->rep; -} - -void leveldb_options_set_block_size(leveldb_options_t* opt, size_t s) { - opt->rep.block_size = s; -} - -void leveldb_options_set_block_restart_interval(leveldb_options_t* opt, int n) { - opt->rep.block_restart_interval = n; -} - -void leveldb_options_set_compression(leveldb_options_t* opt, int t) { - opt->rep.compression = static_cast(t); -} - -leveldb_comparator_t* leveldb_comparator_create( - void* state, - void (*destructor)(void*), - int (*compare)( - void*, - const char* a, size_t alen, - const char* b, size_t blen), - const char* (*name)(void*)) { - leveldb_comparator_t* result = new leveldb_comparator_t; - result->state_ = state; - result->destructor_ = destructor; - result->compare_ = compare; - result->name_ = name; - return result; -} - -void leveldb_comparator_destroy(leveldb_comparator_t* cmp) { - delete cmp; -} - -leveldb_filterpolicy_t* leveldb_filterpolicy_create( - void* state, - void (*destructor)(void*), - char* (*create_filter)( - void*, - const char* const* key_array, const size_t* key_length_array, - int num_keys, - size_t* filter_length), - unsigned char (*key_may_match)( - void*, - const char* key, size_t length, - const char* filter, size_t filter_length), - const char* (*name)(void*)) { - leveldb_filterpolicy_t* result = new leveldb_filterpolicy_t; - result->state_ = state; - result->destructor_ = destructor; - result->create_ = create_filter; - result->key_match_ = key_may_match; - result->name_ = name; - return result; -} - -void leveldb_filterpolicy_destroy(leveldb_filterpolicy_t* filter) { - delete filter; -} - -leveldb_filterpolicy_t* leveldb_filterpolicy_create_bloom(int bits_per_key) { - // Make a leveldb_filterpolicy_t, but override all of its methods so - // they delegate to a NewBloomFilterPolicy() instead of user - // supplied C functions. - struct Wrapper : public leveldb_filterpolicy_t { - const FilterPolicy* rep_; - ~Wrapper() { delete rep_; } - const char* Name() const { return rep_->Name(); } - void CreateFilter(const Slice* keys, int n, std::string* dst) const { - return rep_->CreateFilter(keys, n, dst); - } - bool KeyMayMatch(const Slice& key, const Slice& filter) const { - return rep_->KeyMayMatch(key, filter); - } - static void DoNothing(void*) { } - }; - Wrapper* wrapper = new Wrapper; - wrapper->rep_ = NewBloomFilterPolicy(bits_per_key); - wrapper->state_ = NULL; - wrapper->destructor_ = &Wrapper::DoNothing; - return wrapper; -} - -leveldb_readoptions_t* leveldb_readoptions_create() { - return new leveldb_readoptions_t; -} - -void leveldb_readoptions_destroy(leveldb_readoptions_t* opt) { - delete opt; -} - -void leveldb_readoptions_set_verify_checksums( - leveldb_readoptions_t* opt, - unsigned char v) { - opt->rep.verify_checksums = v; -} - -void leveldb_readoptions_set_fill_cache( - leveldb_readoptions_t* opt, unsigned char v) { - opt->rep.fill_cache = v; -} - -void leveldb_readoptions_set_snapshot( - leveldb_readoptions_t* opt, - const leveldb_snapshot_t* snap) { - opt->rep.snapshot = (snap ? snap->rep : NULL); -} - -leveldb_writeoptions_t* leveldb_writeoptions_create() { - return new leveldb_writeoptions_t; -} - -void leveldb_writeoptions_destroy(leveldb_writeoptions_t* opt) { - delete opt; -} - -void leveldb_writeoptions_set_sync( - leveldb_writeoptions_t* opt, unsigned char v) { - opt->rep.sync = v; -} - -leveldb_cache_t* leveldb_cache_create_lru(size_t capacity) { - leveldb_cache_t* c = new leveldb_cache_t; - c->rep = NewLRUCache(capacity); - return c; -} - -void leveldb_cache_destroy(leveldb_cache_t* cache) { - delete cache->rep; - delete cache; -} - -leveldb_env_t* leveldb_create_default_env() { - leveldb_env_t* result = new leveldb_env_t; - result->rep = Env::Default(); - result->is_default = true; - return result; -} - -void leveldb_env_destroy(leveldb_env_t* env) { - if (!env->is_default) delete env->rep; - delete env; -} - -void leveldb_free(void* ptr) { - free(ptr); -} - -int leveldb_major_version() { - return kMajorVersion; -} - -int leveldb_minor_version() { - return kMinorVersion; -} - -} // end extern "C" diff --git a/leveldb-1.18/db/c_test.c b/leveldb-1.18/db/c_test.c deleted file mode 100644 index 7cd5ee0..0000000 --- a/leveldb-1.18/db/c_test.c +++ /dev/null @@ -1,390 +0,0 @@ -/* Copyright (c) 2011 The LevelDB Authors. All rights reserved. - Use of this source code is governed by a BSD-style license that can be - found in the LICENSE file. See the AUTHORS file for names of contributors. */ - -#include "leveldb/c.h" - -#include -#include -#include -#include -#include -#include - -const char* phase = ""; -static char dbname[200]; - -static void StartPhase(const char* name) { - fprintf(stderr, "=== Test %s\n", name); - phase = name; -} - -static const char* GetTempDir(void) { - const char* ret = getenv("TEST_TMPDIR"); - if (ret == NULL || ret[0] == '\0') - ret = "/tmp"; - return ret; -} - -#define CheckNoError(err) \ - if ((err) != NULL) { \ - fprintf(stderr, "%s:%d: %s: %s\n", __FILE__, __LINE__, phase, (err)); \ - abort(); \ - } - -#define CheckCondition(cond) \ - if (!(cond)) { \ - fprintf(stderr, "%s:%d: %s: %s\n", __FILE__, __LINE__, phase, #cond); \ - abort(); \ - } - -static void CheckEqual(const char* expected, const char* v, size_t n) { - if (expected == NULL && v == NULL) { - // ok - } else if (expected != NULL && v != NULL && n == strlen(expected) && - memcmp(expected, v, n) == 0) { - // ok - return; - } else { - fprintf(stderr, "%s: expected '%s', got '%s'\n", - phase, - (expected ? expected : "(null)"), - (v ? v : "(null")); - abort(); - } -} - -static void Free(char** ptr) { - if (*ptr) { - free(*ptr); - *ptr = NULL; - } -} - -static void CheckGet( - leveldb_t* db, - const leveldb_readoptions_t* options, - const char* key, - const char* expected) { - char* err = NULL; - size_t val_len; - char* val; - val = leveldb_get(db, options, key, strlen(key), &val_len, &err); - CheckNoError(err); - CheckEqual(expected, val, val_len); - Free(&val); -} - -static void CheckIter(leveldb_iterator_t* iter, - const char* key, const char* val) { - size_t len; - const char* str; - str = leveldb_iter_key(iter, &len); - CheckEqual(key, str, len); - str = leveldb_iter_value(iter, &len); - CheckEqual(val, str, len); -} - -// Callback from leveldb_writebatch_iterate() -static void CheckPut(void* ptr, - const char* k, size_t klen, - const char* v, size_t vlen) { - int* state = (int*) ptr; - CheckCondition(*state < 2); - switch (*state) { - case 0: - CheckEqual("bar", k, klen); - CheckEqual("b", v, vlen); - break; - case 1: - CheckEqual("box", k, klen); - CheckEqual("c", v, vlen); - break; - } - (*state)++; -} - -// Callback from leveldb_writebatch_iterate() -static void CheckDel(void* ptr, const char* k, size_t klen) { - int* state = (int*) ptr; - CheckCondition(*state == 2); - CheckEqual("bar", k, klen); - (*state)++; -} - -static void CmpDestroy(void* arg) { } - -static int CmpCompare(void* arg, const char* a, size_t alen, - const char* b, size_t blen) { - int n = (alen < blen) ? alen : blen; - int r = memcmp(a, b, n); - if (r == 0) { - if (alen < blen) r = -1; - else if (alen > blen) r = +1; - } - return r; -} - -static const char* CmpName(void* arg) { - return "foo"; -} - -// Custom filter policy -static unsigned char fake_filter_result = 1; -static void FilterDestroy(void* arg) { } -static const char* FilterName(void* arg) { - return "TestFilter"; -} -static char* FilterCreate( - void* arg, - const char* const* key_array, const size_t* key_length_array, - int num_keys, - size_t* filter_length) { - *filter_length = 4; - char* result = malloc(4); - memcpy(result, "fake", 4); - return result; -} -unsigned char FilterKeyMatch( - void* arg, - const char* key, size_t length, - const char* filter, size_t filter_length) { - CheckCondition(filter_length == 4); - CheckCondition(memcmp(filter, "fake", 4) == 0); - return fake_filter_result; -} - -int main(int argc, char** argv) { - leveldb_t* db; - leveldb_comparator_t* cmp; - leveldb_cache_t* cache; - leveldb_env_t* env; - leveldb_options_t* options; - leveldb_readoptions_t* roptions; - leveldb_writeoptions_t* woptions; - char* err = NULL; - int run = -1; - - CheckCondition(leveldb_major_version() >= 1); - CheckCondition(leveldb_minor_version() >= 1); - - snprintf(dbname, sizeof(dbname), - "%s/leveldb_c_test-%d", - GetTempDir(), - ((int) geteuid())); - - StartPhase("create_objects"); - cmp = leveldb_comparator_create(NULL, CmpDestroy, CmpCompare, CmpName); - env = leveldb_create_default_env(); - cache = leveldb_cache_create_lru(100000); - - options = leveldb_options_create(); - leveldb_options_set_comparator(options, cmp); - leveldb_options_set_error_if_exists(options, 1); - leveldb_options_set_cache(options, cache); - leveldb_options_set_env(options, env); - leveldb_options_set_info_log(options, NULL); - leveldb_options_set_write_buffer_size(options, 100000); - leveldb_options_set_paranoid_checks(options, 1); - leveldb_options_set_max_open_files(options, 10); - leveldb_options_set_block_size(options, 1024); - leveldb_options_set_block_restart_interval(options, 8); - leveldb_options_set_compression(options, leveldb_no_compression); - - roptions = leveldb_readoptions_create(); - leveldb_readoptions_set_verify_checksums(roptions, 1); - leveldb_readoptions_set_fill_cache(roptions, 0); - - woptions = leveldb_writeoptions_create(); - leveldb_writeoptions_set_sync(woptions, 1); - - StartPhase("destroy"); - leveldb_destroy_db(options, dbname, &err); - Free(&err); - - StartPhase("open_error"); - db = leveldb_open(options, dbname, &err); - CheckCondition(err != NULL); - Free(&err); - - StartPhase("leveldb_free"); - db = leveldb_open(options, dbname, &err); - CheckCondition(err != NULL); - leveldb_free(err); - err = NULL; - - StartPhase("open"); - leveldb_options_set_create_if_missing(options, 1); - db = leveldb_open(options, dbname, &err); - CheckNoError(err); - CheckGet(db, roptions, "foo", NULL); - - StartPhase("put"); - leveldb_put(db, woptions, "foo", 3, "hello", 5, &err); - CheckNoError(err); - CheckGet(db, roptions, "foo", "hello"); - - StartPhase("compactall"); - leveldb_compact_range(db, NULL, 0, NULL, 0); - CheckGet(db, roptions, "foo", "hello"); - - StartPhase("compactrange"); - leveldb_compact_range(db, "a", 1, "z", 1); - CheckGet(db, roptions, "foo", "hello"); - - StartPhase("writebatch"); - { - leveldb_writebatch_t* wb = leveldb_writebatch_create(); - leveldb_writebatch_put(wb, "foo", 3, "a", 1); - leveldb_writebatch_clear(wb); - leveldb_writebatch_put(wb, "bar", 3, "b", 1); - leveldb_writebatch_put(wb, "box", 3, "c", 1); - leveldb_writebatch_delete(wb, "bar", 3); - leveldb_write(db, woptions, wb, &err); - CheckNoError(err); - CheckGet(db, roptions, "foo", "hello"); - CheckGet(db, roptions, "bar", NULL); - CheckGet(db, roptions, "box", "c"); - int pos = 0; - leveldb_writebatch_iterate(wb, &pos, CheckPut, CheckDel); - CheckCondition(pos == 3); - leveldb_writebatch_destroy(wb); - } - - StartPhase("iter"); - { - leveldb_iterator_t* iter = leveldb_create_iterator(db, roptions); - CheckCondition(!leveldb_iter_valid(iter)); - leveldb_iter_seek_to_first(iter); - CheckCondition(leveldb_iter_valid(iter)); - CheckIter(iter, "box", "c"); - leveldb_iter_next(iter); - CheckIter(iter, "foo", "hello"); - leveldb_iter_prev(iter); - CheckIter(iter, "box", "c"); - leveldb_iter_prev(iter); - CheckCondition(!leveldb_iter_valid(iter)); - leveldb_iter_seek_to_last(iter); - CheckIter(iter, "foo", "hello"); - leveldb_iter_seek(iter, "b", 1); - CheckIter(iter, "box", "c"); - leveldb_iter_get_error(iter, &err); - CheckNoError(err); - leveldb_iter_destroy(iter); - } - - StartPhase("approximate_sizes"); - { - int i; - int n = 20000; - char keybuf[100]; - char valbuf[100]; - uint64_t sizes[2]; - const char* start[2] = { "a", "k00000000000000010000" }; - size_t start_len[2] = { 1, 21 }; - const char* limit[2] = { "k00000000000000010000", "z" }; - size_t limit_len[2] = { 21, 1 }; - leveldb_writeoptions_set_sync(woptions, 0); - for (i = 0; i < n; i++) { - snprintf(keybuf, sizeof(keybuf), "k%020d", i); - snprintf(valbuf, sizeof(valbuf), "v%020d", i); - leveldb_put(db, woptions, keybuf, strlen(keybuf), valbuf, strlen(valbuf), - &err); - CheckNoError(err); - } - leveldb_approximate_sizes(db, 2, start, start_len, limit, limit_len, sizes); - CheckCondition(sizes[0] > 0); - CheckCondition(sizes[1] > 0); - } - - StartPhase("property"); - { - char* prop = leveldb_property_value(db, "nosuchprop"); - CheckCondition(prop == NULL); - prop = leveldb_property_value(db, "leveldb.stats"); - CheckCondition(prop != NULL); - Free(&prop); - } - - StartPhase("snapshot"); - { - const leveldb_snapshot_t* snap; - snap = leveldb_create_snapshot(db); - leveldb_delete(db, woptions, "foo", 3, &err); - CheckNoError(err); - leveldb_readoptions_set_snapshot(roptions, snap); - CheckGet(db, roptions, "foo", "hello"); - leveldb_readoptions_set_snapshot(roptions, NULL); - CheckGet(db, roptions, "foo", NULL); - leveldb_release_snapshot(db, snap); - } - - StartPhase("repair"); - { - leveldb_close(db); - leveldb_options_set_create_if_missing(options, 0); - leveldb_options_set_error_if_exists(options, 0); - leveldb_repair_db(options, dbname, &err); - CheckNoError(err); - db = leveldb_open(options, dbname, &err); - CheckNoError(err); - CheckGet(db, roptions, "foo", NULL); - CheckGet(db, roptions, "bar", NULL); - CheckGet(db, roptions, "box", "c"); - leveldb_options_set_create_if_missing(options, 1); - leveldb_options_set_error_if_exists(options, 1); - } - - StartPhase("filter"); - for (run = 0; run < 2; run++) { - // First run uses custom filter, second run uses bloom filter - CheckNoError(err); - leveldb_filterpolicy_t* policy; - if (run == 0) { - policy = leveldb_filterpolicy_create( - NULL, FilterDestroy, FilterCreate, FilterKeyMatch, FilterName); - } else { - policy = leveldb_filterpolicy_create_bloom(10); - } - - // Create new database - leveldb_close(db); - leveldb_destroy_db(options, dbname, &err); - leveldb_options_set_filter_policy(options, policy); - db = leveldb_open(options, dbname, &err); - CheckNoError(err); - leveldb_put(db, woptions, "foo", 3, "foovalue", 8, &err); - CheckNoError(err); - leveldb_put(db, woptions, "bar", 3, "barvalue", 8, &err); - CheckNoError(err); - leveldb_compact_range(db, NULL, 0, NULL, 0); - - fake_filter_result = 1; - CheckGet(db, roptions, "foo", "foovalue"); - CheckGet(db, roptions, "bar", "barvalue"); - if (phase == 0) { - // Must not find value when custom filter returns false - fake_filter_result = 0; - CheckGet(db, roptions, "foo", NULL); - CheckGet(db, roptions, "bar", NULL); - fake_filter_result = 1; - - CheckGet(db, roptions, "foo", "foovalue"); - CheckGet(db, roptions, "bar", "barvalue"); - } - leveldb_options_set_filter_policy(options, NULL); - leveldb_filterpolicy_destroy(policy); - } - - StartPhase("cleanup"); - leveldb_close(db); - leveldb_options_destroy(options); - leveldb_readoptions_destroy(roptions); - leveldb_writeoptions_destroy(woptions); - leveldb_cache_destroy(cache); - leveldb_comparator_destroy(cmp); - leveldb_env_destroy(env); - - fprintf(stderr, "PASS\n"); - return 0; -} diff --git a/leveldb-1.18/db/corruption_test.cc b/leveldb-1.18/db/corruption_test.cc deleted file mode 100644 index 96afc68..0000000 --- a/leveldb-1.18/db/corruption_test.cc +++ /dev/null @@ -1,374 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/db.h" - -#include -#include -#include -#include -#include "leveldb/cache.h" -#include "leveldb/env.h" -#include "leveldb/table.h" -#include "leveldb/write_batch.h" -#include "db/db_impl.h" -#include "db/filename.h" -#include "db/log_format.h" -#include "db/version_set.h" -#include "util/logging.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace leveldb { - -static const int kValueSize = 1000; - -class CorruptionTest { - public: - test::ErrorEnv env_; - std::string dbname_; - Cache* tiny_cache_; - Options options_; - DB* db_; - - CorruptionTest() { - tiny_cache_ = NewLRUCache(100); - options_.env = &env_; - options_.block_cache = tiny_cache_; - dbname_ = test::TmpDir() + "/db_test"; - DestroyDB(dbname_, options_); - - db_ = NULL; - options_.create_if_missing = true; - Reopen(); - options_.create_if_missing = false; - } - - ~CorruptionTest() { - delete db_; - DestroyDB(dbname_, Options()); - delete tiny_cache_; - } - - Status TryReopen() { - delete db_; - db_ = NULL; - return DB::Open(options_, dbname_, &db_); - } - - void Reopen() { - ASSERT_OK(TryReopen()); - } - - void RepairDB() { - delete db_; - db_ = NULL; - ASSERT_OK(::leveldb::RepairDB(dbname_, options_)); - } - - void Build(int n) { - std::string key_space, value_space; - WriteBatch batch; - for (int i = 0; i < n; i++) { - //if ((i % 100) == 0) fprintf(stderr, "@ %d of %d\n", i, n); - Slice key = Key(i, &key_space); - batch.Clear(); - batch.Put(key, Value(i, &value_space)); - WriteOptions options; - // Corrupt() doesn't work without this sync on windows; stat reports 0 for - // the file size. - if (i == n - 1) { - options.sync = true; - } - ASSERT_OK(db_->Write(options, &batch)); - } - } - - void Check(int min_expected, int max_expected) { - int next_expected = 0; - int missed = 0; - int bad_keys = 0; - int bad_values = 0; - int correct = 0; - std::string value_space; - Iterator* iter = db_->NewIterator(ReadOptions()); - for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { - uint64_t key; - Slice in(iter->key()); - if (in == "" || in == "~") { - // Ignore boundary keys. - continue; - } - if (!ConsumeDecimalNumber(&in, &key) || - !in.empty() || - key < next_expected) { - bad_keys++; - continue; - } - missed += (key - next_expected); - next_expected = key + 1; - if (iter->value() != Value(key, &value_space)) { - bad_values++; - } else { - correct++; - } - } - delete iter; - - fprintf(stderr, - "expected=%d..%d; got=%d; bad_keys=%d; bad_values=%d; missed=%d\n", - min_expected, max_expected, correct, bad_keys, bad_values, missed); - ASSERT_LE(min_expected, correct); - ASSERT_GE(max_expected, correct); - } - - void Corrupt(FileType filetype, int offset, int bytes_to_corrupt) { - // Pick file to corrupt - std::vector filenames; - ASSERT_OK(env_.GetChildren(dbname_, &filenames)); - uint64_t number; - FileType type; - std::string fname; - int picked_number = -1; - for (size_t i = 0; i < filenames.size(); i++) { - if (ParseFileName(filenames[i], &number, &type) && - type == filetype && - int(number) > picked_number) { // Pick latest file - fname = dbname_ + "/" + filenames[i]; - picked_number = number; - } - } - ASSERT_TRUE(!fname.empty()) << filetype; - - struct stat sbuf; - if (stat(fname.c_str(), &sbuf) != 0) { - const char* msg = strerror(errno); - ASSERT_TRUE(false) << fname << ": " << msg; - } - - if (offset < 0) { - // Relative to end of file; make it absolute - if (-offset > sbuf.st_size) { - offset = 0; - } else { - offset = sbuf.st_size + offset; - } - } - if (offset > sbuf.st_size) { - offset = sbuf.st_size; - } - if (offset + bytes_to_corrupt > sbuf.st_size) { - bytes_to_corrupt = sbuf.st_size - offset; - } - - // Do it - std::string contents; - Status s = ReadFileToString(Env::Default(), fname, &contents); - ASSERT_TRUE(s.ok()) << s.ToString(); - for (int i = 0; i < bytes_to_corrupt; i++) { - contents[i + offset] ^= 0x80; - } - s = WriteStringToFile(Env::Default(), contents, fname); - ASSERT_TRUE(s.ok()) << s.ToString(); - } - - int Property(const std::string& name) { - std::string property; - int result; - if (db_->GetProperty(name, &property) && - sscanf(property.c_str(), "%d", &result) == 1) { - return result; - } else { - return -1; - } - } - - // Return the ith key - Slice Key(int i, std::string* storage) { - char buf[100]; - snprintf(buf, sizeof(buf), "%016d", i); - storage->assign(buf, strlen(buf)); - return Slice(*storage); - } - - // Return the value to associate with the specified key - Slice Value(int k, std::string* storage) { - Random r(k); - return test::RandomString(&r, kValueSize, storage); - } -}; - -TEST(CorruptionTest, Recovery) { - Build(100); - Check(100, 100); - Corrupt(kLogFile, 19, 1); // WriteBatch tag for first record - Corrupt(kLogFile, log::kBlockSize + 1000, 1); // Somewhere in second block - Reopen(); - - // The 64 records in the first two log blocks are completely lost. - Check(36, 36); -} - -TEST(CorruptionTest, RecoverWriteError) { - env_.writable_file_error_ = true; - Status s = TryReopen(); - ASSERT_TRUE(!s.ok()); -} - -TEST(CorruptionTest, NewFileErrorDuringWrite) { - // Do enough writing to force minor compaction - env_.writable_file_error_ = true; - const int num = 3 + (Options().write_buffer_size / kValueSize); - std::string value_storage; - Status s; - for (int i = 0; s.ok() && i < num; i++) { - WriteBatch batch; - batch.Put("a", Value(100, &value_storage)); - s = db_->Write(WriteOptions(), &batch); - } - ASSERT_TRUE(!s.ok()); - ASSERT_GE(env_.num_writable_file_errors_, 1); - env_.writable_file_error_ = false; - Reopen(); -} - -TEST(CorruptionTest, TableFile) { - Build(100); - DBImpl* dbi = reinterpret_cast(db_); - dbi->TEST_CompactMemTable(); - dbi->TEST_CompactRange(0, NULL, NULL); - dbi->TEST_CompactRange(1, NULL, NULL); - - Corrupt(kTableFile, 100, 1); - Check(90, 99); -} - -TEST(CorruptionTest, TableFileRepair) { - options_.block_size = 2 * kValueSize; // Limit scope of corruption - options_.paranoid_checks = true; - Reopen(); - Build(100); - DBImpl* dbi = reinterpret_cast(db_); - dbi->TEST_CompactMemTable(); - dbi->TEST_CompactRange(0, NULL, NULL); - dbi->TEST_CompactRange(1, NULL, NULL); - - Corrupt(kTableFile, 100, 1); - RepairDB(); - Reopen(); - Check(95, 99); -} - -TEST(CorruptionTest, TableFileIndexData) { - Build(10000); // Enough to build multiple Tables - DBImpl* dbi = reinterpret_cast(db_); - dbi->TEST_CompactMemTable(); - - Corrupt(kTableFile, -2000, 500); - Reopen(); - Check(5000, 9999); -} - -TEST(CorruptionTest, MissingDescriptor) { - Build(1000); - RepairDB(); - Reopen(); - Check(1000, 1000); -} - -TEST(CorruptionTest, SequenceNumberRecovery) { - ASSERT_OK(db_->Put(WriteOptions(), "foo", "v1")); - ASSERT_OK(db_->Put(WriteOptions(), "foo", "v2")); - ASSERT_OK(db_->Put(WriteOptions(), "foo", "v3")); - ASSERT_OK(db_->Put(WriteOptions(), "foo", "v4")); - ASSERT_OK(db_->Put(WriteOptions(), "foo", "v5")); - RepairDB(); - Reopen(); - std::string v; - ASSERT_OK(db_->Get(ReadOptions(), "foo", &v)); - ASSERT_EQ("v5", v); - // Write something. If sequence number was not recovered properly, - // it will be hidden by an earlier write. - ASSERT_OK(db_->Put(WriteOptions(), "foo", "v6")); - ASSERT_OK(db_->Get(ReadOptions(), "foo", &v)); - ASSERT_EQ("v6", v); - Reopen(); - ASSERT_OK(db_->Get(ReadOptions(), "foo", &v)); - ASSERT_EQ("v6", v); -} - -TEST(CorruptionTest, CorruptedDescriptor) { - ASSERT_OK(db_->Put(WriteOptions(), "foo", "hello")); - DBImpl* dbi = reinterpret_cast(db_); - dbi->TEST_CompactMemTable(); - dbi->TEST_CompactRange(0, NULL, NULL); - - Corrupt(kDescriptorFile, 0, 1000); - Status s = TryReopen(); - ASSERT_TRUE(!s.ok()); - - RepairDB(); - Reopen(); - std::string v; - ASSERT_OK(db_->Get(ReadOptions(), "foo", &v)); - ASSERT_EQ("hello", v); -} - -TEST(CorruptionTest, CompactionInputError) { - Build(10); - DBImpl* dbi = reinterpret_cast(db_); - dbi->TEST_CompactMemTable(); - const int last = config::kMaxMemCompactLevel; - ASSERT_EQ(1, Property("leveldb.num-files-at-level" + NumberToString(last))); - - Corrupt(kTableFile, 100, 1); - Check(5, 9); - - // Force compactions by writing lots of values - Build(10000); - Check(10000, 10000); -} - -TEST(CorruptionTest, CompactionInputErrorParanoid) { - options_.paranoid_checks = true; - options_.write_buffer_size = 512 << 10; - Reopen(); - DBImpl* dbi = reinterpret_cast(db_); - - // Make multiple inputs so we need to compact. - for (int i = 0; i < 2; i++) { - Build(10); - dbi->TEST_CompactMemTable(); - Corrupt(kTableFile, 100, 1); - env_.SleepForMicroseconds(100000); - } - dbi->CompactRange(NULL, NULL); - - // Write must fail because of corrupted table - std::string tmp1, tmp2; - Status s = db_->Put(WriteOptions(), Key(5, &tmp1), Value(5, &tmp2)); - ASSERT_TRUE(!s.ok()) << "write did not fail in corrupted paranoid db"; -} - -TEST(CorruptionTest, UnrelatedKeys) { - Build(10); - DBImpl* dbi = reinterpret_cast(db_); - dbi->TEST_CompactMemTable(); - Corrupt(kTableFile, 100, 1); - - std::string tmp1, tmp2; - ASSERT_OK(db_->Put(WriteOptions(), Key(1000, &tmp1), Value(1000, &tmp2))); - std::string v; - ASSERT_OK(db_->Get(ReadOptions(), Key(1000, &tmp1), &v)); - ASSERT_EQ(Value(1000, &tmp2).ToString(), v); - dbi->TEST_CompactMemTable(); - ASSERT_OK(db_->Get(ReadOptions(), Key(1000, &tmp1), &v)); - ASSERT_EQ(Value(1000, &tmp2).ToString(), v); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/db_bench.cc b/leveldb-1.18/db/db_bench.cc deleted file mode 100644 index 705a170..0000000 --- a/leveldb-1.18/db/db_bench.cc +++ /dev/null @@ -1,978 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include -#include -#include "db/db_impl.h" -#include "db/version_set.h" -#include "leveldb/cache.h" -#include "leveldb/db.h" -#include "leveldb/env.h" -#include "leveldb/write_batch.h" -#include "port/port.h" -#include "util/crc32c.h" -#include "util/histogram.h" -#include "util/mutexlock.h" -#include "util/random.h" -#include "util/testutil.h" - -// Comma-separated list of operations to run in the specified order -// Actual benchmarks: -// fillseq -- write N values in sequential key order in async mode -// fillrandom -- write N values in random key order in async mode -// overwrite -- overwrite N values in random key order in async mode -// fillsync -- write N/100 values in random key order in sync mode -// fill100K -- write N/1000 100K values in random order in async mode -// deleteseq -- delete N keys in sequential order -// deleterandom -- delete N keys in random order -// readseq -- read N times sequentially -// readreverse -- read N times in reverse order -// readrandom -- read N times in random order -// readmissing -- read N missing keys in random order -// readhot -- read N times in random order from 1% section of DB -// seekrandom -- N random seeks -// crc32c -- repeated crc32c of 4K of data -// acquireload -- load N*1000 times -// Meta operations: -// compact -- Compact the entire DB -// stats -- Print DB stats -// sstables -- Print sstable info -// heapprofile -- Dump a heap profile (if supported by this port) -static const char* FLAGS_benchmarks = - "fillseq," - "fillsync," - "fillrandom," - "overwrite," - "readrandom," - "readrandom," // Extra run to allow previous compactions to quiesce - "readseq," - "readreverse," - "compact," - "readrandom," - "readseq," - "readreverse," - "fill100K," - "crc32c," - "snappycomp," - "snappyuncomp," - "acquireload," - ; - -// Number of key/values to place in database -static int FLAGS_num = 1000000; - -// Number of read operations to do. If negative, do FLAGS_num reads. -static int FLAGS_reads = -1; - -// Number of concurrent threads to run. -static int FLAGS_threads = 1; - -// Size of each value -static int FLAGS_value_size = 100; - -// Arrange to generate values that shrink to this fraction of -// their original size after compression -static double FLAGS_compression_ratio = 0.5; - -// Print histogram of operation timings -static bool FLAGS_histogram = false; - -// Number of bytes to buffer in memtable before compacting -// (initialized to default value by "main") -static int FLAGS_write_buffer_size = 0; - -// Number of bytes to use as a cache of uncompressed data. -// Negative means use default settings. -static int FLAGS_cache_size = -1; - -// Maximum number of files to keep open at the same time (use default if == 0) -static int FLAGS_open_files = 0; - -// Bloom filter bits per key. -// Negative means use default settings. -static int FLAGS_bloom_bits = -1; - -// If true, do not destroy the existing database. If you set this -// flag and also specify a benchmark that wants a fresh database, that -// benchmark will fail. -static bool FLAGS_use_existing_db = false; - -// Use the db with the following name. -static const char* FLAGS_db = NULL; - -namespace leveldb { - -namespace { - -// Helper for quickly generating random data. -class RandomGenerator { - private: - std::string data_; - int pos_; - - public: - RandomGenerator() { - // We use a limited amount of data over and over again and ensure - // that it is larger than the compression window (32KB), and also - // large enough to serve all typical value sizes we want to write. - Random rnd(301); - std::string piece; - while (data_.size() < 1048576) { - // Add a short fragment that is as compressible as specified - // by FLAGS_compression_ratio. - test::CompressibleString(&rnd, FLAGS_compression_ratio, 100, &piece); - data_.append(piece); - } - pos_ = 0; - } - - Slice Generate(size_t len) { - if (pos_ + len > data_.size()) { - pos_ = 0; - assert(len < data_.size()); - } - pos_ += len; - return Slice(data_.data() + pos_ - len, len); - } -}; - -static Slice TrimSpace(Slice s) { - size_t start = 0; - while (start < s.size() && isspace(s[start])) { - start++; - } - size_t limit = s.size(); - while (limit > start && isspace(s[limit-1])) { - limit--; - } - return Slice(s.data() + start, limit - start); -} - -static void AppendWithSpace(std::string* str, Slice msg) { - if (msg.empty()) return; - if (!str->empty()) { - str->push_back(' '); - } - str->append(msg.data(), msg.size()); -} - -class Stats { - private: - double start_; - double finish_; - double seconds_; - int done_; - int next_report_; - int64_t bytes_; - double last_op_finish_; - Histogram hist_; - std::string message_; - - public: - Stats() { Start(); } - - void Start() { - next_report_ = 100; - last_op_finish_ = start_; - hist_.Clear(); - done_ = 0; - bytes_ = 0; - seconds_ = 0; - start_ = Env::Default()->NowMicros(); - finish_ = start_; - message_.clear(); - } - - void Merge(const Stats& other) { - hist_.Merge(other.hist_); - done_ += other.done_; - bytes_ += other.bytes_; - seconds_ += other.seconds_; - if (other.start_ < start_) start_ = other.start_; - if (other.finish_ > finish_) finish_ = other.finish_; - - // Just keep the messages from one thread - if (message_.empty()) message_ = other.message_; - } - - void Stop() { - finish_ = Env::Default()->NowMicros(); - seconds_ = (finish_ - start_) * 1e-6; - } - - void AddMessage(Slice msg) { - AppendWithSpace(&message_, msg); - } - - void FinishedSingleOp() { - if (FLAGS_histogram) { - double now = Env::Default()->NowMicros(); - double micros = now - last_op_finish_; - hist_.Add(micros); - if (micros > 20000) { - fprintf(stderr, "long op: %.1f micros%30s\r", micros, ""); - fflush(stderr); - } - last_op_finish_ = now; - } - - done_++; - if (done_ >= next_report_) { - if (next_report_ < 1000) next_report_ += 100; - else if (next_report_ < 5000) next_report_ += 500; - else if (next_report_ < 10000) next_report_ += 1000; - else if (next_report_ < 50000) next_report_ += 5000; - else if (next_report_ < 100000) next_report_ += 10000; - else if (next_report_ < 500000) next_report_ += 50000; - else next_report_ += 100000; - fprintf(stderr, "... finished %d ops%30s\r", done_, ""); - fflush(stderr); - } - } - - void AddBytes(int64_t n) { - bytes_ += n; - } - - void Report(const Slice& name) { - // Pretend at least one op was done in case we are running a benchmark - // that does not call FinishedSingleOp(). - if (done_ < 1) done_ = 1; - - std::string extra; - if (bytes_ > 0) { - // Rate is computed on actual elapsed time, not the sum of per-thread - // elapsed times. - double elapsed = (finish_ - start_) * 1e-6; - char rate[100]; - snprintf(rate, sizeof(rate), "%6.1f MB/s", - (bytes_ / 1048576.0) / elapsed); - extra = rate; - } - AppendWithSpace(&extra, message_); - - fprintf(stdout, "%-12s : %11.3f micros/op;%s%s\n", - name.ToString().c_str(), - seconds_ * 1e6 / done_, - (extra.empty() ? "" : " "), - extra.c_str()); - if (FLAGS_histogram) { - fprintf(stdout, "Microseconds per op:\n%s\n", hist_.ToString().c_str()); - } - fflush(stdout); - } -}; - -// State shared by all concurrent executions of the same benchmark. -struct SharedState { - port::Mutex mu; - port::CondVar cv; - int total; - - // Each thread goes through the following states: - // (1) initializing - // (2) waiting for others to be initialized - // (3) running - // (4) done - - int num_initialized; - int num_done; - bool start; - - SharedState() : cv(&mu) { } -}; - -// Per-thread state for concurrent executions of the same benchmark. -struct ThreadState { - int tid; // 0..n-1 when running in n threads - Random rand; // Has different seeds for different threads - Stats stats; - SharedState* shared; - - ThreadState(int index) - : tid(index), - rand(1000 + index) { - } -}; - -} // namespace - -class Benchmark { - private: - Cache* cache_; - const FilterPolicy* filter_policy_; - DB* db_; - int num_; - int value_size_; - int entries_per_batch_; - WriteOptions write_options_; - int reads_; - int heap_counter_; - - void PrintHeader() { - const int kKeySize = 16; - PrintEnvironment(); - fprintf(stdout, "Keys: %d bytes each\n", kKeySize); - fprintf(stdout, "Values: %d bytes each (%d bytes after compression)\n", - FLAGS_value_size, - static_cast(FLAGS_value_size * FLAGS_compression_ratio + 0.5)); - fprintf(stdout, "Entries: %d\n", num_); - fprintf(stdout, "RawSize: %.1f MB (estimated)\n", - ((static_cast(kKeySize + FLAGS_value_size) * num_) - / 1048576.0)); - fprintf(stdout, "FileSize: %.1f MB (estimated)\n", - (((kKeySize + FLAGS_value_size * FLAGS_compression_ratio) * num_) - / 1048576.0)); - PrintWarnings(); - fprintf(stdout, "------------------------------------------------\n"); - } - - void PrintWarnings() { -#if defined(__GNUC__) && !defined(__OPTIMIZE__) - fprintf(stdout, - "WARNING: Optimization is disabled: benchmarks unnecessarily slow\n" - ); -#endif -#ifndef NDEBUG - fprintf(stdout, - "WARNING: Assertions are enabled; benchmarks unnecessarily slow\n"); -#endif - - // See if snappy is working by attempting to compress a compressible string - const char text[] = "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"; - std::string compressed; - if (!port::Snappy_Compress(text, sizeof(text), &compressed)) { - fprintf(stdout, "WARNING: Snappy compression is not enabled\n"); - } else if (compressed.size() >= sizeof(text)) { - fprintf(stdout, "WARNING: Snappy compression is not effective\n"); - } - } - - void PrintEnvironment() { - fprintf(stderr, "LevelDB: version %d.%d\n", - kMajorVersion, kMinorVersion); - -#if defined(__linux) - time_t now = time(NULL); - fprintf(stderr, "Date: %s", ctime(&now)); // ctime() adds newline - - FILE* cpuinfo = fopen("/proc/cpuinfo", "r"); - if (cpuinfo != NULL) { - char line[1000]; - int num_cpus = 0; - std::string cpu_type; - std::string cache_size; - while (fgets(line, sizeof(line), cpuinfo) != NULL) { - const char* sep = strchr(line, ':'); - if (sep == NULL) { - continue; - } - Slice key = TrimSpace(Slice(line, sep - 1 - line)); - Slice val = TrimSpace(Slice(sep + 1)); - if (key == "model name") { - ++num_cpus; - cpu_type = val.ToString(); - } else if (key == "cache size") { - cache_size = val.ToString(); - } - } - fclose(cpuinfo); - fprintf(stderr, "CPU: %d * %s\n", num_cpus, cpu_type.c_str()); - fprintf(stderr, "CPUCache: %s\n", cache_size.c_str()); - } -#endif - } - - public: - Benchmark() - : cache_(FLAGS_cache_size >= 0 ? NewLRUCache(FLAGS_cache_size) : NULL), - filter_policy_(FLAGS_bloom_bits >= 0 - ? NewBloomFilterPolicy(FLAGS_bloom_bits) - : NULL), - db_(NULL), - num_(FLAGS_num), - value_size_(FLAGS_value_size), - entries_per_batch_(1), - reads_(FLAGS_reads < 0 ? FLAGS_num : FLAGS_reads), - heap_counter_(0) { - std::vector files; - Env::Default()->GetChildren(FLAGS_db, &files); - for (size_t i = 0; i < files.size(); i++) { - if (Slice(files[i]).starts_with("heap-")) { - Env::Default()->DeleteFile(std::string(FLAGS_db) + "/" + files[i]); - } - } - if (!FLAGS_use_existing_db) { - DestroyDB(FLAGS_db, Options()); - } - } - - ~Benchmark() { - delete db_; - delete cache_; - delete filter_policy_; - } - - void Run() { - PrintHeader(); - Open(); - - const char* benchmarks = FLAGS_benchmarks; - while (benchmarks != NULL) { - const char* sep = strchr(benchmarks, ','); - Slice name; - if (sep == NULL) { - name = benchmarks; - benchmarks = NULL; - } else { - name = Slice(benchmarks, sep - benchmarks); - benchmarks = sep + 1; - } - - // Reset parameters that may be overridden below - num_ = FLAGS_num; - reads_ = (FLAGS_reads < 0 ? FLAGS_num : FLAGS_reads); - value_size_ = FLAGS_value_size; - entries_per_batch_ = 1; - write_options_ = WriteOptions(); - - void (Benchmark::*method)(ThreadState*) = NULL; - bool fresh_db = false; - int num_threads = FLAGS_threads; - - if (name == Slice("fillseq")) { - fresh_db = true; - method = &Benchmark::WriteSeq; - } else if (name == Slice("fillbatch")) { - fresh_db = true; - entries_per_batch_ = 1000; - method = &Benchmark::WriteSeq; - } else if (name == Slice("fillrandom")) { - fresh_db = true; - method = &Benchmark::WriteRandom; - } else if (name == Slice("overwrite")) { - fresh_db = false; - method = &Benchmark::WriteRandom; - } else if (name == Slice("fillsync")) { - fresh_db = true; - num_ /= 1000; - write_options_.sync = true; - method = &Benchmark::WriteRandom; - } else if (name == Slice("fill100K")) { - fresh_db = true; - num_ /= 1000; - value_size_ = 100 * 1000; - method = &Benchmark::WriteRandom; - } else if (name == Slice("readseq")) { - method = &Benchmark::ReadSequential; - } else if (name == Slice("readreverse")) { - method = &Benchmark::ReadReverse; - } else if (name == Slice("readrandom")) { - method = &Benchmark::ReadRandom; - } else if (name == Slice("readmissing")) { - method = &Benchmark::ReadMissing; - } else if (name == Slice("seekrandom")) { - method = &Benchmark::SeekRandom; - } else if (name == Slice("readhot")) { - method = &Benchmark::ReadHot; - } else if (name == Slice("readrandomsmall")) { - reads_ /= 1000; - method = &Benchmark::ReadRandom; - } else if (name == Slice("deleteseq")) { - method = &Benchmark::DeleteSeq; - } else if (name == Slice("deleterandom")) { - method = &Benchmark::DeleteRandom; - } else if (name == Slice("readwhilewriting")) { - num_threads++; // Add extra thread for writing - method = &Benchmark::ReadWhileWriting; - } else if (name == Slice("compact")) { - method = &Benchmark::Compact; - } else if (name == Slice("crc32c")) { - method = &Benchmark::Crc32c; - } else if (name == Slice("acquireload")) { - method = &Benchmark::AcquireLoad; - } else if (name == Slice("snappycomp")) { - method = &Benchmark::SnappyCompress; - } else if (name == Slice("snappyuncomp")) { - method = &Benchmark::SnappyUncompress; - } else if (name == Slice("heapprofile")) { - HeapProfile(); - } else if (name == Slice("stats")) { - PrintStats("leveldb.stats"); - } else if (name == Slice("sstables")) { - PrintStats("leveldb.sstables"); - } else { - if (name != Slice()) { // No error message for empty name - fprintf(stderr, "unknown benchmark '%s'\n", name.ToString().c_str()); - } - } - - if (fresh_db) { - if (FLAGS_use_existing_db) { - fprintf(stdout, "%-12s : skipped (--use_existing_db is true)\n", - name.ToString().c_str()); - method = NULL; - } else { - delete db_; - db_ = NULL; - DestroyDB(FLAGS_db, Options()); - Open(); - } - } - - if (method != NULL) { - RunBenchmark(num_threads, name, method); - } - } - } - - private: - struct ThreadArg { - Benchmark* bm; - SharedState* shared; - ThreadState* thread; - void (Benchmark::*method)(ThreadState*); - }; - - static void ThreadBody(void* v) { - ThreadArg* arg = reinterpret_cast(v); - SharedState* shared = arg->shared; - ThreadState* thread = arg->thread; - { - MutexLock l(&shared->mu); - shared->num_initialized++; - if (shared->num_initialized >= shared->total) { - shared->cv.SignalAll(); - } - while (!shared->start) { - shared->cv.Wait(); - } - } - - thread->stats.Start(); - (arg->bm->*(arg->method))(thread); - thread->stats.Stop(); - - { - MutexLock l(&shared->mu); - shared->num_done++; - if (shared->num_done >= shared->total) { - shared->cv.SignalAll(); - } - } - } - - void RunBenchmark(int n, Slice name, - void (Benchmark::*method)(ThreadState*)) { - SharedState shared; - shared.total = n; - shared.num_initialized = 0; - shared.num_done = 0; - shared.start = false; - - ThreadArg* arg = new ThreadArg[n]; - for (int i = 0; i < n; i++) { - arg[i].bm = this; - arg[i].method = method; - arg[i].shared = &shared; - arg[i].thread = new ThreadState(i); - arg[i].thread->shared = &shared; - Env::Default()->StartThread(ThreadBody, &arg[i]); - } - - shared.mu.Lock(); - while (shared.num_initialized < n) { - shared.cv.Wait(); - } - - shared.start = true; - shared.cv.SignalAll(); - while (shared.num_done < n) { - shared.cv.Wait(); - } - shared.mu.Unlock(); - - for (int i = 1; i < n; i++) { - arg[0].thread->stats.Merge(arg[i].thread->stats); - } - arg[0].thread->stats.Report(name); - - for (int i = 0; i < n; i++) { - delete arg[i].thread; - } - delete[] arg; - } - - void Crc32c(ThreadState* thread) { - // Checksum about 500MB of data total - const int size = 4096; - const char* label = "(4K per op)"; - std::string data(size, 'x'); - int64_t bytes = 0; - uint32_t crc = 0; - while (bytes < 500 * 1048576) { - crc = crc32c::Value(data.data(), size); - thread->stats.FinishedSingleOp(); - bytes += size; - } - // Print so result is not dead - fprintf(stderr, "... crc=0x%x\r", static_cast(crc)); - - thread->stats.AddBytes(bytes); - thread->stats.AddMessage(label); - } - - void AcquireLoad(ThreadState* thread) { - int dummy; - port::AtomicPointer ap(&dummy); - int count = 0; - void *ptr = NULL; - thread->stats.AddMessage("(each op is 1000 loads)"); - while (count < 100000) { - for (int i = 0; i < 1000; i++) { - ptr = ap.Acquire_Load(); - } - count++; - thread->stats.FinishedSingleOp(); - } - if (ptr == NULL) exit(1); // Disable unused variable warning. - } - - void SnappyCompress(ThreadState* thread) { - RandomGenerator gen; - Slice input = gen.Generate(Options().block_size); - int64_t bytes = 0; - int64_t produced = 0; - bool ok = true; - std::string compressed; - while (ok && bytes < 1024 * 1048576) { // Compress 1G - ok = port::Snappy_Compress(input.data(), input.size(), &compressed); - produced += compressed.size(); - bytes += input.size(); - thread->stats.FinishedSingleOp(); - } - - if (!ok) { - thread->stats.AddMessage("(snappy failure)"); - } else { - char buf[100]; - snprintf(buf, sizeof(buf), "(output: %.1f%%)", - (produced * 100.0) / bytes); - thread->stats.AddMessage(buf); - thread->stats.AddBytes(bytes); - } - } - - void SnappyUncompress(ThreadState* thread) { - RandomGenerator gen; - Slice input = gen.Generate(Options().block_size); - std::string compressed; - bool ok = port::Snappy_Compress(input.data(), input.size(), &compressed); - int64_t bytes = 0; - char* uncompressed = new char[input.size()]; - while (ok && bytes < 1024 * 1048576) { // Compress 1G - ok = port::Snappy_Uncompress(compressed.data(), compressed.size(), - uncompressed); - bytes += input.size(); - thread->stats.FinishedSingleOp(); - } - delete[] uncompressed; - - if (!ok) { - thread->stats.AddMessage("(snappy failure)"); - } else { - thread->stats.AddBytes(bytes); - } - } - - void Open() { - assert(db_ == NULL); - Options options; - options.create_if_missing = !FLAGS_use_existing_db; - options.block_cache = cache_; - options.write_buffer_size = FLAGS_write_buffer_size; - options.max_open_files = FLAGS_open_files; - options.filter_policy = filter_policy_; - Status s = DB::Open(options, FLAGS_db, &db_); - if (!s.ok()) { - fprintf(stderr, "open error: %s\n", s.ToString().c_str()); - exit(1); - } - } - - void WriteSeq(ThreadState* thread) { - DoWrite(thread, true); - } - - void WriteRandom(ThreadState* thread) { - DoWrite(thread, false); - } - - void DoWrite(ThreadState* thread, bool seq) { - if (num_ != FLAGS_num) { - char msg[100]; - snprintf(msg, sizeof(msg), "(%d ops)", num_); - thread->stats.AddMessage(msg); - } - - RandomGenerator gen; - WriteBatch batch; - Status s; - int64_t bytes = 0; - for (int i = 0; i < num_; i += entries_per_batch_) { - batch.Clear(); - for (int j = 0; j < entries_per_batch_; j++) { - const int k = seq ? i+j : (thread->rand.Next() % FLAGS_num); - char key[100]; - snprintf(key, sizeof(key), "%016d", k); - batch.Put(key, gen.Generate(value_size_)); - bytes += value_size_ + strlen(key); - thread->stats.FinishedSingleOp(); - } - s = db_->Write(write_options_, &batch); - if (!s.ok()) { - fprintf(stderr, "put error: %s\n", s.ToString().c_str()); - exit(1); - } - } - thread->stats.AddBytes(bytes); - } - - void ReadSequential(ThreadState* thread) { - Iterator* iter = db_->NewIterator(ReadOptions()); - int i = 0; - int64_t bytes = 0; - for (iter->SeekToFirst(); i < reads_ && iter->Valid(); iter->Next()) { - bytes += iter->key().size() + iter->value().size(); - thread->stats.FinishedSingleOp(); - ++i; - } - delete iter; - thread->stats.AddBytes(bytes); - } - - void ReadReverse(ThreadState* thread) { - Iterator* iter = db_->NewIterator(ReadOptions()); - int i = 0; - int64_t bytes = 0; - for (iter->SeekToLast(); i < reads_ && iter->Valid(); iter->Prev()) { - bytes += iter->key().size() + iter->value().size(); - thread->stats.FinishedSingleOp(); - ++i; - } - delete iter; - thread->stats.AddBytes(bytes); - } - - void ReadRandom(ThreadState* thread) { - ReadOptions options; - std::string value; - int found = 0; - for (int i = 0; i < reads_; i++) { - char key[100]; - const int k = thread->rand.Next() % FLAGS_num; - snprintf(key, sizeof(key), "%016d", k); - if (db_->Get(options, key, &value).ok()) { - found++; - } - thread->stats.FinishedSingleOp(); - } - char msg[100]; - snprintf(msg, sizeof(msg), "(%d of %d found)", found, num_); - thread->stats.AddMessage(msg); - } - - void ReadMissing(ThreadState* thread) { - ReadOptions options; - std::string value; - for (int i = 0; i < reads_; i++) { - char key[100]; - const int k = thread->rand.Next() % FLAGS_num; - snprintf(key, sizeof(key), "%016d.", k); - db_->Get(options, key, &value); - thread->stats.FinishedSingleOp(); - } - } - - void ReadHot(ThreadState* thread) { - ReadOptions options; - std::string value; - const int range = (FLAGS_num + 99) / 100; - for (int i = 0; i < reads_; i++) { - char key[100]; - const int k = thread->rand.Next() % range; - snprintf(key, sizeof(key), "%016d", k); - db_->Get(options, key, &value); - thread->stats.FinishedSingleOp(); - } - } - - void SeekRandom(ThreadState* thread) { - ReadOptions options; - int found = 0; - for (int i = 0; i < reads_; i++) { - Iterator* iter = db_->NewIterator(options); - char key[100]; - const int k = thread->rand.Next() % FLAGS_num; - snprintf(key, sizeof(key), "%016d", k); - iter->Seek(key); - if (iter->Valid() && iter->key() == key) found++; - delete iter; - thread->stats.FinishedSingleOp(); - } - char msg[100]; - snprintf(msg, sizeof(msg), "(%d of %d found)", found, num_); - thread->stats.AddMessage(msg); - } - - void DoDelete(ThreadState* thread, bool seq) { - RandomGenerator gen; - WriteBatch batch; - Status s; - for (int i = 0; i < num_; i += entries_per_batch_) { - batch.Clear(); - for (int j = 0; j < entries_per_batch_; j++) { - const int k = seq ? i+j : (thread->rand.Next() % FLAGS_num); - char key[100]; - snprintf(key, sizeof(key), "%016d", k); - batch.Delete(key); - thread->stats.FinishedSingleOp(); - } - s = db_->Write(write_options_, &batch); - if (!s.ok()) { - fprintf(stderr, "del error: %s\n", s.ToString().c_str()); - exit(1); - } - } - } - - void DeleteSeq(ThreadState* thread) { - DoDelete(thread, true); - } - - void DeleteRandom(ThreadState* thread) { - DoDelete(thread, false); - } - - void ReadWhileWriting(ThreadState* thread) { - if (thread->tid > 0) { - ReadRandom(thread); - } else { - // Special thread that keeps writing until other threads are done. - RandomGenerator gen; - while (true) { - { - MutexLock l(&thread->shared->mu); - if (thread->shared->num_done + 1 >= thread->shared->num_initialized) { - // Other threads have finished - break; - } - } - - const int k = thread->rand.Next() % FLAGS_num; - char key[100]; - snprintf(key, sizeof(key), "%016d", k); - Status s = db_->Put(write_options_, key, gen.Generate(value_size_)); - if (!s.ok()) { - fprintf(stderr, "put error: %s\n", s.ToString().c_str()); - exit(1); - } - } - - // Do not count any of the preceding work/delay in stats. - thread->stats.Start(); - } - } - - void Compact(ThreadState* thread) { - db_->CompactRange(NULL, NULL); - } - - void PrintStats(const char* key) { - std::string stats; - if (!db_->GetProperty(key, &stats)) { - stats = "(failed)"; - } - fprintf(stdout, "\n%s\n", stats.c_str()); - } - - static void WriteToFile(void* arg, const char* buf, int n) { - reinterpret_cast(arg)->Append(Slice(buf, n)); - } - - void HeapProfile() { - char fname[100]; - snprintf(fname, sizeof(fname), "%s/heap-%04d", FLAGS_db, ++heap_counter_); - WritableFile* file; - Status s = Env::Default()->NewWritableFile(fname, &file); - if (!s.ok()) { - fprintf(stderr, "%s\n", s.ToString().c_str()); - return; - } - bool ok = port::GetHeapProfile(WriteToFile, file); - delete file; - if (!ok) { - fprintf(stderr, "heap profiling not supported\n"); - Env::Default()->DeleteFile(fname); - } - } -}; - -} // namespace leveldb - -int main(int argc, char** argv) { - FLAGS_write_buffer_size = leveldb::Options().write_buffer_size; - FLAGS_open_files = leveldb::Options().max_open_files; - std::string default_db_path; - - for (int i = 1; i < argc; i++) { - double d; - int n; - char junk; - if (leveldb::Slice(argv[i]).starts_with("--benchmarks=")) { - FLAGS_benchmarks = argv[i] + strlen("--benchmarks="); - } else if (sscanf(argv[i], "--compression_ratio=%lf%c", &d, &junk) == 1) { - FLAGS_compression_ratio = d; - } else if (sscanf(argv[i], "--histogram=%d%c", &n, &junk) == 1 && - (n == 0 || n == 1)) { - FLAGS_histogram = n; - } else if (sscanf(argv[i], "--use_existing_db=%d%c", &n, &junk) == 1 && - (n == 0 || n == 1)) { - FLAGS_use_existing_db = n; - } else if (sscanf(argv[i], "--num=%d%c", &n, &junk) == 1) { - FLAGS_num = n; - } else if (sscanf(argv[i], "--reads=%d%c", &n, &junk) == 1) { - FLAGS_reads = n; - } else if (sscanf(argv[i], "--threads=%d%c", &n, &junk) == 1) { - FLAGS_threads = n; - } else if (sscanf(argv[i], "--value_size=%d%c", &n, &junk) == 1) { - FLAGS_value_size = n; - } else if (sscanf(argv[i], "--write_buffer_size=%d%c", &n, &junk) == 1) { - FLAGS_write_buffer_size = n; - } else if (sscanf(argv[i], "--cache_size=%d%c", &n, &junk) == 1) { - FLAGS_cache_size = n; - } else if (sscanf(argv[i], "--bloom_bits=%d%c", &n, &junk) == 1) { - FLAGS_bloom_bits = n; - } else if (sscanf(argv[i], "--open_files=%d%c", &n, &junk) == 1) { - FLAGS_open_files = n; - } else if (strncmp(argv[i], "--db=", 5) == 0) { - FLAGS_db = argv[i] + 5; - } else { - fprintf(stderr, "Invalid flag '%s'\n", argv[i]); - exit(1); - } - } - - // Choose a location for the test database if none given with --db= - if (FLAGS_db == NULL) { - leveldb::Env::Default()->GetTestDirectory(&default_db_path); - default_db_path += "/dbbench"; - FLAGS_db = default_db_path.c_str(); - } - - leveldb::Benchmark benchmark; - benchmark.Run(); - return 0; -} diff --git a/leveldb-1.18/db/db_impl.cc b/leveldb-1.18/db/db_impl.cc deleted file mode 100644 index 49b9595..0000000 --- a/leveldb-1.18/db/db_impl.cc +++ /dev/null @@ -1,1513 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/db_impl.h" - -#include -#include -#include -#include -#include -#include -#include "db/builder.h" -#include "db/db_iter.h" -#include "db/dbformat.h" -#include "db/filename.h" -#include "db/log_reader.h" -#include "db/log_writer.h" -#include "db/memtable.h" -#include "db/table_cache.h" -#include "db/version_set.h" -#include "db/write_batch_internal.h" -#include "leveldb/db.h" -#include "leveldb/env.h" -#include "leveldb/status.h" -#include "leveldb/table.h" -#include "leveldb/table_builder.h" -#include "port/port.h" -#include "table/block.h" -#include "table/merger.h" -#include "table/two_level_iterator.h" -#include "util/coding.h" -#include "util/logging.h" -#include "util/mutexlock.h" - -namespace leveldb { - -const int kNumNonTableCacheFiles = 10; - -// Information kept for every waiting writer -struct DBImpl::Writer { - Status status; - WriteBatch* batch; - bool sync; - bool done; - port::CondVar cv; - - explicit Writer(port::Mutex* mu) : cv(mu) { } -}; - -struct DBImpl::CompactionState { - Compaction* const compaction; - - // Sequence numbers < smallest_snapshot are not significant since we - // will never have to service a snapshot below smallest_snapshot. - // Therefore if we have seen a sequence number S <= smallest_snapshot, - // we can drop all entries for the same key with sequence numbers < S. - SequenceNumber smallest_snapshot; - - // Files produced by compaction - struct Output { - uint64_t number; - uint64_t file_size; - InternalKey smallest, largest; - }; - std::vector outputs; - - // State kept for output being generated - WritableFile* outfile; - TableBuilder* builder; - - uint64_t total_bytes; - - Output* current_output() { return &outputs[outputs.size()-1]; } - - explicit CompactionState(Compaction* c) - : compaction(c), - outfile(NULL), - builder(NULL), - total_bytes(0) { - } -}; - -// Fix user-supplied options to be reasonable -template -static void ClipToRange(T* ptr, V minvalue, V maxvalue) { - if (static_cast(*ptr) > maxvalue) *ptr = maxvalue; - if (static_cast(*ptr) < minvalue) *ptr = minvalue; -} -Options SanitizeOptions(const std::string& dbname, - const InternalKeyComparator* icmp, - const InternalFilterPolicy* ipolicy, - const Options& src) { - Options result = src; - result.comparator = icmp; - result.filter_policy = (src.filter_policy != NULL) ? ipolicy : NULL; - ClipToRange(&result.max_open_files, 64 + kNumNonTableCacheFiles, 50000); - ClipToRange(&result.write_buffer_size, 64<<10, 1<<30); - ClipToRange(&result.block_size, 1<<10, 4<<20); - if (result.info_log == NULL) { - // Open a log file in the same directory as the db - src.env->CreateDir(dbname); // In case it does not exist - src.env->RenameFile(InfoLogFileName(dbname), OldInfoLogFileName(dbname)); - Status s = src.env->NewLogger(InfoLogFileName(dbname), &result.info_log); - if (!s.ok()) { - // No place suitable for logging - result.info_log = NULL; - } - } - if (result.block_cache == NULL) { - result.block_cache = NewLRUCache(8 << 20); - } - return result; -} - -DBImpl::DBImpl(const Options& raw_options, const std::string& dbname) - : env_(raw_options.env), - internal_comparator_(raw_options.comparator), - internal_filter_policy_(raw_options.filter_policy), - options_(SanitizeOptions(dbname, &internal_comparator_, - &internal_filter_policy_, raw_options)), - owns_info_log_(options_.info_log != raw_options.info_log), - owns_cache_(options_.block_cache != raw_options.block_cache), - dbname_(dbname), - db_lock_(NULL), - shutting_down_(NULL), - bg_cv_(&mutex_), - mem_(new MemTable(internal_comparator_)), - imm_(NULL), - logfile_(NULL), - logfile_number_(0), - log_(NULL), - seed_(0), - tmp_batch_(new WriteBatch), - bg_compaction_scheduled_(false), - manual_compaction_(NULL) { - mem_->Ref(); - has_imm_.Release_Store(NULL); - - // Reserve ten files or so for other uses and give the rest to TableCache. - const int table_cache_size = options_.max_open_files - kNumNonTableCacheFiles; - table_cache_ = new TableCache(dbname_, &options_, table_cache_size); - - versions_ = new VersionSet(dbname_, &options_, table_cache_, - &internal_comparator_); -} - -DBImpl::~DBImpl() { - // Wait for background work to finish - mutex_.Lock(); - shutting_down_.Release_Store(this); // Any non-NULL value is ok - while (bg_compaction_scheduled_) { - bg_cv_.Wait(); - } - mutex_.Unlock(); - - if (db_lock_ != NULL) { - env_->UnlockFile(db_lock_); - } - - delete versions_; - if (mem_ != NULL) mem_->Unref(); - if (imm_ != NULL) imm_->Unref(); - delete tmp_batch_; - delete log_; - delete logfile_; - delete table_cache_; - - if (owns_info_log_) { - delete options_.info_log; - } - if (owns_cache_) { - delete options_.block_cache; - } -} - -Status DBImpl::NewDB() { - VersionEdit new_db; - new_db.SetComparatorName(user_comparator()->Name()); - new_db.SetLogNumber(0); - new_db.SetNextFile(2); - new_db.SetLastSequence(0); - - const std::string manifest = DescriptorFileName(dbname_, 1); - WritableFile* file; - Status s = env_->NewWritableFile(manifest, &file); - if (!s.ok()) { - return s; - } - { - log::Writer log(file); - std::string record; - new_db.EncodeTo(&record); - s = log.AddRecord(record); - if (s.ok()) { - s = file->Close(); - } - } - delete file; - if (s.ok()) { - // Make "CURRENT" file that points to the new manifest file. - s = SetCurrentFile(env_, dbname_, 1); - } else { - env_->DeleteFile(manifest); - } - return s; -} - -void DBImpl::MaybeIgnoreError(Status* s) const { - if (s->ok() || options_.paranoid_checks) { - // No change needed - } else { - Log(options_.info_log, "Ignoring error %s", s->ToString().c_str()); - *s = Status::OK(); - } -} - -void DBImpl::DeleteObsoleteFiles() { - if (!bg_error_.ok()) { - // After a background error, we don't know whether a new version may - // or may not have been committed, so we cannot safely garbage collect. - return; - } - - // Make a set of all of the live files - std::set live = pending_outputs_; - versions_->AddLiveFiles(&live); - - std::vector filenames; - env_->GetChildren(dbname_, &filenames); // Ignoring errors on purpose - uint64_t number; - FileType type; - for (size_t i = 0; i < filenames.size(); i++) { - if (ParseFileName(filenames[i], &number, &type)) { - bool keep = true; - switch (type) { - case kLogFile: - keep = ((number >= versions_->LogNumber()) || - (number == versions_->PrevLogNumber())); - break; - case kDescriptorFile: - // Keep my manifest file, and any newer incarnations' - // (in case there is a race that allows other incarnations) - keep = (number >= versions_->ManifestFileNumber()); - break; - case kTableFile: - keep = (live.find(number) != live.end()); - break; - case kTempFile: - // Any temp files that are currently being written to must - // be recorded in pending_outputs_, which is inserted into "live" - keep = (live.find(number) != live.end()); - break; - case kCurrentFile: - case kDBLockFile: - case kInfoLogFile: - keep = true; - break; - } - - if (!keep) { - if (type == kTableFile) { - table_cache_->Evict(number); - } - Log(options_.info_log, "Delete type=%d #%lld\n", - int(type), - static_cast(number)); - env_->DeleteFile(dbname_ + "/" + filenames[i]); - } - } - } -} - -Status DBImpl::Recover(VersionEdit* edit) { - mutex_.AssertHeld(); - - // Ignore error from CreateDir since the creation of the DB is - // committed only when the descriptor is created, and this directory - // may already exist from a previous failed creation attempt. - env_->CreateDir(dbname_); - assert(db_lock_ == NULL); - Status s = env_->LockFile(LockFileName(dbname_), &db_lock_); - if (!s.ok()) { - return s; - } - - if (!env_->FileExists(CurrentFileName(dbname_))) { - if (options_.create_if_missing) { - s = NewDB(); - if (!s.ok()) { - return s; - } - } else { - return Status::InvalidArgument( - dbname_, "does not exist (create_if_missing is false)"); - } - } else { - if (options_.error_if_exists) { - return Status::InvalidArgument( - dbname_, "exists (error_if_exists is true)"); - } - } - - s = versions_->Recover(); - if (s.ok()) { - SequenceNumber max_sequence(0); - - // Recover from all newer log files than the ones named in the - // descriptor (new log files may have been added by the previous - // incarnation without registering them in the descriptor). - // - // Note that PrevLogNumber() is no longer used, but we pay - // attention to it in case we are recovering a database - // produced by an older version of leveldb. - const uint64_t min_log = versions_->LogNumber(); - const uint64_t prev_log = versions_->PrevLogNumber(); - std::vector filenames; - s = env_->GetChildren(dbname_, &filenames); - if (!s.ok()) { - return s; - } - std::set expected; - versions_->AddLiveFiles(&expected); - uint64_t number; - FileType type; - std::vector logs; - for (size_t i = 0; i < filenames.size(); i++) { - if (ParseFileName(filenames[i], &number, &type)) { - expected.erase(number); - if (type == kLogFile && ((number >= min_log) || (number == prev_log))) - logs.push_back(number); - } - } - if (!expected.empty()) { - char buf[50]; - snprintf(buf, sizeof(buf), "%d missing files; e.g.", - static_cast(expected.size())); - return Status::Corruption(buf, TableFileName(dbname_, *(expected.begin()))); - } - - // Recover in the order in which the logs were generated - std::sort(logs.begin(), logs.end()); - for (size_t i = 0; i < logs.size(); i++) { - s = RecoverLogFile(logs[i], edit, &max_sequence); - - // The previous incarnation may not have written any MANIFEST - // records after allocating this log number. So we manually - // update the file number allocation counter in VersionSet. - versions_->MarkFileNumberUsed(logs[i]); - } - - if (s.ok()) { - if (versions_->LastSequence() < max_sequence) { - versions_->SetLastSequence(max_sequence); - } - } - } - - return s; -} - -Status DBImpl::RecoverLogFile(uint64_t log_number, - VersionEdit* edit, - SequenceNumber* max_sequence) { - struct LogReporter : public log::Reader::Reporter { - Env* env; - Logger* info_log; - const char* fname; - Status* status; // NULL if options_.paranoid_checks==false - virtual void Corruption(size_t bytes, const Status& s) { - Log(info_log, "%s%s: dropping %d bytes; %s", - (this->status == NULL ? "(ignoring error) " : ""), - fname, static_cast(bytes), s.ToString().c_str()); - if (this->status != NULL && this->status->ok()) *this->status = s; - } - }; - - mutex_.AssertHeld(); - - // Open the log file - std::string fname = LogFileName(dbname_, log_number); - SequentialFile* file; - Status status = env_->NewSequentialFile(fname, &file); - if (!status.ok()) { - MaybeIgnoreError(&status); - return status; - } - - // Create the log reader. - LogReporter reporter; - reporter.env = env_; - reporter.info_log = options_.info_log; - reporter.fname = fname.c_str(); - reporter.status = (options_.paranoid_checks ? &status : NULL); - // We intentionally make log::Reader do checksumming even if - // paranoid_checks==false so that corruptions cause entire commits - // to be skipped instead of propagating bad information (like overly - // large sequence numbers). - log::Reader reader(file, &reporter, true/*checksum*/, - 0/*initial_offset*/); - Log(options_.info_log, "Recovering log #%llu", - (unsigned long long) log_number); - - // Read all the records and add to a memtable - std::string scratch; - Slice record; - WriteBatch batch; - MemTable* mem = NULL; - while (reader.ReadRecord(&record, &scratch) && - status.ok()) { - if (record.size() < 12) { - reporter.Corruption( - record.size(), Status::Corruption("log record too small")); - continue; - } - WriteBatchInternal::SetContents(&batch, record); - - if (mem == NULL) { - mem = new MemTable(internal_comparator_); - mem->Ref(); - } - status = WriteBatchInternal::InsertInto(&batch, mem); - MaybeIgnoreError(&status); - if (!status.ok()) { - break; - } - const SequenceNumber last_seq = - WriteBatchInternal::Sequence(&batch) + - WriteBatchInternal::Count(&batch) - 1; - if (last_seq > *max_sequence) { - *max_sequence = last_seq; - } - - if (mem->ApproximateMemoryUsage() > options_.write_buffer_size) { - status = WriteLevel0Table(mem, edit, NULL); - if (!status.ok()) { - // Reflect errors immediately so that conditions like full - // file-systems cause the DB::Open() to fail. - break; - } - mem->Unref(); - mem = NULL; - } - } - - if (status.ok() && mem != NULL) { - status = WriteLevel0Table(mem, edit, NULL); - // Reflect errors immediately so that conditions like full - // file-systems cause the DB::Open() to fail. - } - - if (mem != NULL) mem->Unref(); - delete file; - return status; -} - -Status DBImpl::WriteLevel0Table(MemTable* mem, VersionEdit* edit, - Version* base) { - mutex_.AssertHeld(); - const uint64_t start_micros = env_->NowMicros(); - FileMetaData meta; - meta.number = versions_->NewFileNumber(); - pending_outputs_.insert(meta.number); - Iterator* iter = mem->NewIterator(); - Log(options_.info_log, "Level-0 table #%llu: started", - (unsigned long long) meta.number); - - Status s; - { - mutex_.Unlock(); - s = BuildTable(dbname_, env_, options_, table_cache_, iter, &meta); - mutex_.Lock(); - } - - Log(options_.info_log, "Level-0 table #%llu: %lld bytes %s", - (unsigned long long) meta.number, - (unsigned long long) meta.file_size, - s.ToString().c_str()); - delete iter; - pending_outputs_.erase(meta.number); - - - // Note that if file_size is zero, the file has been deleted and - // should not be added to the manifest. - int level = 0; - if (s.ok() && meta.file_size > 0) { - const Slice min_user_key = meta.smallest.user_key(); - const Slice max_user_key = meta.largest.user_key(); - if (base != NULL) { - level = base->PickLevelForMemTableOutput(min_user_key, max_user_key); - } - edit->AddFile(level, meta.number, meta.file_size, - meta.smallest, meta.largest); - } - - CompactionStats stats; - stats.micros = env_->NowMicros() - start_micros; - stats.bytes_written = meta.file_size; - stats_[level].Add(stats); - return s; -} - -void DBImpl::CompactMemTable() { - mutex_.AssertHeld(); - assert(imm_ != NULL); - - // Save the contents of the memtable as a new Table - VersionEdit edit; - Version* base = versions_->current(); - base->Ref(); - Status s = WriteLevel0Table(imm_, &edit, base); - base->Unref(); - - if (s.ok() && shutting_down_.Acquire_Load()) { - s = Status::IOError("Deleting DB during memtable compaction"); - } - - // Replace immutable memtable with the generated Table - if (s.ok()) { - edit.SetPrevLogNumber(0); - edit.SetLogNumber(logfile_number_); // Earlier logs no longer needed - s = versions_->LogAndApply(&edit, &mutex_); - } - - if (s.ok()) { - // Commit to the new state - imm_->Unref(); - imm_ = NULL; - has_imm_.Release_Store(NULL); - DeleteObsoleteFiles(); - } else { - RecordBackgroundError(s); - } -} - -void DBImpl::CompactRange(const Slice* begin, const Slice* end) { - int max_level_with_files = 1; - { - MutexLock l(&mutex_); - Version* base = versions_->current(); - for (int level = 1; level < config::kNumLevels; level++) { - if (base->OverlapInLevel(level, begin, end)) { - max_level_with_files = level; - } - } - } - TEST_CompactMemTable(); // TODO(sanjay): Skip if memtable does not overlap - for (int level = 0; level < max_level_with_files; level++) { - TEST_CompactRange(level, begin, end); - } -} - -void DBImpl::TEST_CompactRange(int level, const Slice* begin,const Slice* end) { - assert(level >= 0); - assert(level + 1 < config::kNumLevels); - - InternalKey begin_storage, end_storage; - - ManualCompaction manual; - manual.level = level; - manual.done = false; - if (begin == NULL) { - manual.begin = NULL; - } else { - begin_storage = InternalKey(*begin, kMaxSequenceNumber, kValueTypeForSeek); - manual.begin = &begin_storage; - } - if (end == NULL) { - manual.end = NULL; - } else { - end_storage = InternalKey(*end, 0, static_cast(0)); - manual.end = &end_storage; - } - - MutexLock l(&mutex_); - while (!manual.done && !shutting_down_.Acquire_Load() && bg_error_.ok()) { - if (manual_compaction_ == NULL) { // Idle - manual_compaction_ = &manual; - MaybeScheduleCompaction(); - } else { // Running either my compaction or another compaction. - bg_cv_.Wait(); - } - } - if (manual_compaction_ == &manual) { - // Cancel my manual compaction since we aborted early for some reason. - manual_compaction_ = NULL; - } -} - -Status DBImpl::TEST_CompactMemTable() { - // NULL batch means just wait for earlier writes to be done - Status s = Write(WriteOptions(), NULL); - if (s.ok()) { - // Wait until the compaction completes - MutexLock l(&mutex_); - while (imm_ != NULL && bg_error_.ok()) { - bg_cv_.Wait(); - } - if (imm_ != NULL) { - s = bg_error_; - } - } - return s; -} - -void DBImpl::RecordBackgroundError(const Status& s) { - mutex_.AssertHeld(); - if (bg_error_.ok()) { - bg_error_ = s; - bg_cv_.SignalAll(); - } -} - -void DBImpl::MaybeScheduleCompaction() { - mutex_.AssertHeld(); - if (bg_compaction_scheduled_) { - // Already scheduled - } else if (shutting_down_.Acquire_Load()) { - // DB is being deleted; no more background compactions - } else if (!bg_error_.ok()) { - // Already got an error; no more changes - } else if (imm_ == NULL && - manual_compaction_ == NULL && - !versions_->NeedsCompaction()) { - // No work to be done - } else { - bg_compaction_scheduled_ = true; - env_->Schedule(&DBImpl::BGWork, this); - } -} - -void DBImpl::BGWork(void* db) { - reinterpret_cast(db)->BackgroundCall(); -} - -void DBImpl::BackgroundCall() { - MutexLock l(&mutex_); - assert(bg_compaction_scheduled_); - if (shutting_down_.Acquire_Load()) { - // No more background work when shutting down. - } else if (!bg_error_.ok()) { - // No more background work after a background error. - } else { - BackgroundCompaction(); - } - - bg_compaction_scheduled_ = false; - - // Previous compaction may have produced too many files in a level, - // so reschedule another compaction if needed. - MaybeScheduleCompaction(); - bg_cv_.SignalAll(); -} - -void DBImpl::BackgroundCompaction() { - mutex_.AssertHeld(); - - if (imm_ != NULL) { - CompactMemTable(); - return; - } - - Compaction* c; - bool is_manual = (manual_compaction_ != NULL); - InternalKey manual_end; - if (is_manual) { - ManualCompaction* m = manual_compaction_; - c = versions_->CompactRange(m->level, m->begin, m->end); - m->done = (c == NULL); - if (c != NULL) { - manual_end = c->input(0, c->num_input_files(0) - 1)->largest; - } - Log(options_.info_log, - "Manual compaction at level-%d from %s .. %s; will stop at %s\n", - m->level, - (m->begin ? m->begin->DebugString().c_str() : "(begin)"), - (m->end ? m->end->DebugString().c_str() : "(end)"), - (m->done ? "(end)" : manual_end.DebugString().c_str())); - } else { - c = versions_->PickCompaction(); - } - - Status status; - if (c == NULL) { - // Nothing to do - } else if (!is_manual && c->IsTrivialMove()) { - // Move file to next level - assert(c->num_input_files(0) == 1); - FileMetaData* f = c->input(0, 0); - c->edit()->DeleteFile(c->level(), f->number); - c->edit()->AddFile(c->level() + 1, f->number, f->file_size, - f->smallest, f->largest); - status = versions_->LogAndApply(c->edit(), &mutex_); - if (!status.ok()) { - RecordBackgroundError(status); - } - VersionSet::LevelSummaryStorage tmp; - Log(options_.info_log, "Moved #%lld to level-%d %lld bytes %s: %s\n", - static_cast(f->number), - c->level() + 1, - static_cast(f->file_size), - status.ToString().c_str(), - versions_->LevelSummary(&tmp)); - } else { - CompactionState* compact = new CompactionState(c); - status = DoCompactionWork(compact); - if (!status.ok()) { - RecordBackgroundError(status); - } - CleanupCompaction(compact); - c->ReleaseInputs(); - DeleteObsoleteFiles(); - } - delete c; - - if (status.ok()) { - // Done - } else if (shutting_down_.Acquire_Load()) { - // Ignore compaction errors found during shutting down - } else { - Log(options_.info_log, - "Compaction error: %s", status.ToString().c_str()); - } - - if (is_manual) { - ManualCompaction* m = manual_compaction_; - if (!status.ok()) { - m->done = true; - } - if (!m->done) { - // We only compacted part of the requested range. Update *m - // to the range that is left to be compacted. - m->tmp_storage = manual_end; - m->begin = &m->tmp_storage; - } - manual_compaction_ = NULL; - } -} - -void DBImpl::CleanupCompaction(CompactionState* compact) { - mutex_.AssertHeld(); - if (compact->builder != NULL) { - // May happen if we get a shutdown call in the middle of compaction - compact->builder->Abandon(); - delete compact->builder; - } else { - assert(compact->outfile == NULL); - } - delete compact->outfile; - for (size_t i = 0; i < compact->outputs.size(); i++) { - const CompactionState::Output& out = compact->outputs[i]; - pending_outputs_.erase(out.number); - } - delete compact; -} - -Status DBImpl::OpenCompactionOutputFile(CompactionState* compact) { - assert(compact != NULL); - assert(compact->builder == NULL); - uint64_t file_number; - { - mutex_.Lock(); - file_number = versions_->NewFileNumber(); - pending_outputs_.insert(file_number); - CompactionState::Output out; - out.number = file_number; - out.smallest.Clear(); - out.largest.Clear(); - compact->outputs.push_back(out); - mutex_.Unlock(); - } - - // Make the output file - std::string fname = TableFileName(dbname_, file_number); - Status s = env_->NewWritableFile(fname, &compact->outfile); - if (s.ok()) { - compact->builder = new TableBuilder(options_, compact->outfile); - } - return s; -} - -Status DBImpl::FinishCompactionOutputFile(CompactionState* compact, - Iterator* input) { - assert(compact != NULL); - assert(compact->outfile != NULL); - assert(compact->builder != NULL); - - const uint64_t output_number = compact->current_output()->number; - assert(output_number != 0); - - // Check for iterator errors - Status s = input->status(); - const uint64_t current_entries = compact->builder->NumEntries(); - if (s.ok()) { - s = compact->builder->Finish(); - } else { - compact->builder->Abandon(); - } - const uint64_t current_bytes = compact->builder->FileSize(); - compact->current_output()->file_size = current_bytes; - compact->total_bytes += current_bytes; - delete compact->builder; - compact->builder = NULL; - - // Finish and check for file errors - if (s.ok()) { - s = compact->outfile->Sync(); - } - if (s.ok()) { - s = compact->outfile->Close(); - } - delete compact->outfile; - compact->outfile = NULL; - - if (s.ok() && current_entries > 0) { - // Verify that the table is usable - Iterator* iter = table_cache_->NewIterator(ReadOptions(), - output_number, - current_bytes); - s = iter->status(); - delete iter; - if (s.ok()) { - Log(options_.info_log, - "Generated table #%llu: %lld keys, %lld bytes", - (unsigned long long) output_number, - (unsigned long long) current_entries, - (unsigned long long) current_bytes); - } - } - return s; -} - - -Status DBImpl::InstallCompactionResults(CompactionState* compact) { - mutex_.AssertHeld(); - Log(options_.info_log, "Compacted %d@%d + %d@%d files => %lld bytes", - compact->compaction->num_input_files(0), - compact->compaction->level(), - compact->compaction->num_input_files(1), - compact->compaction->level() + 1, - static_cast(compact->total_bytes)); - - // Add compaction outputs - compact->compaction->AddInputDeletions(compact->compaction->edit()); - const int level = compact->compaction->level(); - for (size_t i = 0; i < compact->outputs.size(); i++) { - const CompactionState::Output& out = compact->outputs[i]; - compact->compaction->edit()->AddFile( - level + 1, - out.number, out.file_size, out.smallest, out.largest); - } - return versions_->LogAndApply(compact->compaction->edit(), &mutex_); -} - -Status DBImpl::DoCompactionWork(CompactionState* compact) { - const uint64_t start_micros = env_->NowMicros(); - int64_t imm_micros = 0; // Micros spent doing imm_ compactions - - Log(options_.info_log, "Compacting %d@%d + %d@%d files", - compact->compaction->num_input_files(0), - compact->compaction->level(), - compact->compaction->num_input_files(1), - compact->compaction->level() + 1); - - assert(versions_->NumLevelFiles(compact->compaction->level()) > 0); - assert(compact->builder == NULL); - assert(compact->outfile == NULL); - if (snapshots_.empty()) { - compact->smallest_snapshot = versions_->LastSequence(); - } else { - compact->smallest_snapshot = snapshots_.oldest()->number_; - } - - // Release mutex while we're actually doing the compaction work - mutex_.Unlock(); - - Iterator* input = versions_->MakeInputIterator(compact->compaction); - input->SeekToFirst(); - Status status; - ParsedInternalKey ikey; - std::string current_user_key; - bool has_current_user_key = false; - SequenceNumber last_sequence_for_key = kMaxSequenceNumber; - for (; input->Valid() && !shutting_down_.Acquire_Load(); ) { - // Prioritize immutable compaction work - if (has_imm_.NoBarrier_Load() != NULL) { - const uint64_t imm_start = env_->NowMicros(); - mutex_.Lock(); - if (imm_ != NULL) { - CompactMemTable(); - bg_cv_.SignalAll(); // Wakeup MakeRoomForWrite() if necessary - } - mutex_.Unlock(); - imm_micros += (env_->NowMicros() - imm_start); - } - - Slice key = input->key(); - if (compact->compaction->ShouldStopBefore(key) && - compact->builder != NULL) { - status = FinishCompactionOutputFile(compact, input); - if (!status.ok()) { - break; - } - } - - // Handle key/value, add to state, etc. - bool drop = false; - if (!ParseInternalKey(key, &ikey)) { - // Do not hide error keys - current_user_key.clear(); - has_current_user_key = false; - last_sequence_for_key = kMaxSequenceNumber; - } else { - if (!has_current_user_key || - user_comparator()->Compare(ikey.user_key, - Slice(current_user_key)) != 0) { - // First occurrence of this user key - current_user_key.assign(ikey.user_key.data(), ikey.user_key.size()); - has_current_user_key = true; - last_sequence_for_key = kMaxSequenceNumber; - } - - if (last_sequence_for_key <= compact->smallest_snapshot) { - // Hidden by an newer entry for same user key - drop = true; // (A) - } else if (ikey.type == kTypeDeletion && - ikey.sequence <= compact->smallest_snapshot && - compact->compaction->IsBaseLevelForKey(ikey.user_key)) { - // For this user key: - // (1) there is no data in higher levels - // (2) data in lower levels will have larger sequence numbers - // (3) data in layers that are being compacted here and have - // smaller sequence numbers will be dropped in the next - // few iterations of this loop (by rule (A) above). - // Therefore this deletion marker is obsolete and can be dropped. - drop = true; - } - - last_sequence_for_key = ikey.sequence; - } -#if 0 - Log(options_.info_log, - " Compact: %s, seq %d, type: %d %d, drop: %d, is_base: %d, " - "%d smallest_snapshot: %d", - ikey.user_key.ToString().c_str(), - (int)ikey.sequence, ikey.type, kTypeValue, drop, - compact->compaction->IsBaseLevelForKey(ikey.user_key), - (int)last_sequence_for_key, (int)compact->smallest_snapshot); -#endif - - if (!drop) { - // Open output file if necessary - if (compact->builder == NULL) { - status = OpenCompactionOutputFile(compact); - if (!status.ok()) { - break; - } - } - if (compact->builder->NumEntries() == 0) { - compact->current_output()->smallest.DecodeFrom(key); - } - compact->current_output()->largest.DecodeFrom(key); - compact->builder->Add(key, input->value()); - - // Close output file if it is big enough - if (compact->builder->FileSize() >= - compact->compaction->MaxOutputFileSize()) { - status = FinishCompactionOutputFile(compact, input); - if (!status.ok()) { - break; - } - } - } - - input->Next(); - } - - if (status.ok() && shutting_down_.Acquire_Load()) { - status = Status::IOError("Deleting DB during compaction"); - } - if (status.ok() && compact->builder != NULL) { - status = FinishCompactionOutputFile(compact, input); - } - if (status.ok()) { - status = input->status(); - } - delete input; - input = NULL; - - CompactionStats stats; - stats.micros = env_->NowMicros() - start_micros - imm_micros; - for (int which = 0; which < 2; which++) { - for (int i = 0; i < compact->compaction->num_input_files(which); i++) { - stats.bytes_read += compact->compaction->input(which, i)->file_size; - } - } - for (size_t i = 0; i < compact->outputs.size(); i++) { - stats.bytes_written += compact->outputs[i].file_size; - } - - mutex_.Lock(); - stats_[compact->compaction->level() + 1].Add(stats); - - if (status.ok()) { - status = InstallCompactionResults(compact); - } - if (!status.ok()) { - RecordBackgroundError(status); - } - VersionSet::LevelSummaryStorage tmp; - Log(options_.info_log, - "compacted to: %s", versions_->LevelSummary(&tmp)); - return status; -} - -namespace { -struct IterState { - port::Mutex* mu; - Version* version; - MemTable* mem; - MemTable* imm; -}; - -static void CleanupIteratorState(void* arg1, void* arg2) { - IterState* state = reinterpret_cast(arg1); - state->mu->Lock(); - state->mem->Unref(); - if (state->imm != NULL) state->imm->Unref(); - state->version->Unref(); - state->mu->Unlock(); - delete state; -} -} // namespace - -Iterator* DBImpl::NewInternalIterator(const ReadOptions& options, - SequenceNumber* latest_snapshot, - uint32_t* seed) { - IterState* cleanup = new IterState; - mutex_.Lock(); - *latest_snapshot = versions_->LastSequence(); - - // Collect together all needed child iterators - std::vector list; - list.push_back(mem_->NewIterator()); - mem_->Ref(); - if (imm_ != NULL) { - list.push_back(imm_->NewIterator()); - imm_->Ref(); - } - versions_->current()->AddIterators(options, &list); - Iterator* internal_iter = - NewMergingIterator(&internal_comparator_, &list[0], list.size()); - versions_->current()->Ref(); - - cleanup->mu = &mutex_; - cleanup->mem = mem_; - cleanup->imm = imm_; - cleanup->version = versions_->current(); - internal_iter->RegisterCleanup(CleanupIteratorState, cleanup, NULL); - - *seed = ++seed_; - mutex_.Unlock(); - return internal_iter; -} - -Iterator* DBImpl::TEST_NewInternalIterator() { - SequenceNumber ignored; - uint32_t ignored_seed; - return NewInternalIterator(ReadOptions(), &ignored, &ignored_seed); -} - -int64_t DBImpl::TEST_MaxNextLevelOverlappingBytes() { - MutexLock l(&mutex_); - return versions_->MaxNextLevelOverlappingBytes(); -} - -Status DBImpl::Get(const ReadOptions& options, - const Slice& key, - std::string* value) { - Status s; - MutexLock l(&mutex_); - SequenceNumber snapshot; - if (options.snapshot != NULL) { - snapshot = reinterpret_cast(options.snapshot)->number_; - } else { - snapshot = versions_->LastSequence(); - } - - MemTable* mem = mem_; - MemTable* imm = imm_; - Version* current = versions_->current(); - mem->Ref(); - if (imm != NULL) imm->Ref(); - current->Ref(); - - bool have_stat_update = false; - Version::GetStats stats; - - // Unlock while reading from files and memtables - { - mutex_.Unlock(); - // First look in the memtable, then in the immutable memtable (if any). - LookupKey lkey(key, snapshot); - if (mem->Get(lkey, value, &s)) { - // Done - } else if (imm != NULL && imm->Get(lkey, value, &s)) { - // Done - } else { - s = current->Get(options, lkey, value, &stats); - have_stat_update = true; - } - mutex_.Lock(); - } - - if (have_stat_update && current->UpdateStats(stats)) { - MaybeScheduleCompaction(); - } - mem->Unref(); - if (imm != NULL) imm->Unref(); - current->Unref(); - return s; -} - -Iterator* DBImpl::NewIterator(const ReadOptions& options) { - SequenceNumber latest_snapshot; - uint32_t seed; - Iterator* iter = NewInternalIterator(options, &latest_snapshot, &seed); - return NewDBIterator( - this, user_comparator(), iter, - (options.snapshot != NULL - ? reinterpret_cast(options.snapshot)->number_ - : latest_snapshot), - seed); -} - -void DBImpl::RecordReadSample(Slice key) { - MutexLock l(&mutex_); - if (versions_->current()->RecordReadSample(key)) { - MaybeScheduleCompaction(); - } -} - -const Snapshot* DBImpl::GetSnapshot() { - MutexLock l(&mutex_); - return snapshots_.New(versions_->LastSequence()); -} - -void DBImpl::ReleaseSnapshot(const Snapshot* s) { - MutexLock l(&mutex_); - snapshots_.Delete(reinterpret_cast(s)); -} - -// Convenience methods -Status DBImpl::Put(const WriteOptions& o, const Slice& key, const Slice& val) { - return DB::Put(o, key, val); -} - -Status DBImpl::Delete(const WriteOptions& options, const Slice& key) { - return DB::Delete(options, key); -} - -Status DBImpl::Write(const WriteOptions& options, WriteBatch* my_batch) { - Writer w(&mutex_); - w.batch = my_batch; - w.sync = options.sync; - w.done = false; - - MutexLock l(&mutex_); - writers_.push_back(&w); - while (!w.done && &w != writers_.front()) { - w.cv.Wait(); - } - if (w.done) { - return w.status; - } - - // May temporarily unlock and wait. - Status status = MakeRoomForWrite(my_batch == NULL); - uint64_t last_sequence = versions_->LastSequence(); - Writer* last_writer = &w; - if (status.ok() && my_batch != NULL) { // NULL batch is for compactions - WriteBatch* updates = BuildBatchGroup(&last_writer); - WriteBatchInternal::SetSequence(updates, last_sequence + 1); - last_sequence += WriteBatchInternal::Count(updates); - - // Add to log and apply to memtable. We can release the lock - // during this phase since &w is currently responsible for logging - // and protects against concurrent loggers and concurrent writes - // into mem_. - { - mutex_.Unlock(); - status = log_->AddRecord(WriteBatchInternal::Contents(updates)); - bool sync_error = false; - if (status.ok() && options.sync) { - status = logfile_->Sync(); - if (!status.ok()) { - sync_error = true; - } - } - if (status.ok()) { - status = WriteBatchInternal::InsertInto(updates, mem_); - } - mutex_.Lock(); - if (sync_error) { - // The state of the log file is indeterminate: the log record we - // just added may or may not show up when the DB is re-opened. - // So we force the DB into a mode where all future writes fail. - RecordBackgroundError(status); - } - } - if (updates == tmp_batch_) tmp_batch_->Clear(); - - versions_->SetLastSequence(last_sequence); - } - - while (true) { - Writer* ready = writers_.front(); - writers_.pop_front(); - if (ready != &w) { - ready->status = status; - ready->done = true; - ready->cv.Signal(); - } - if (ready == last_writer) break; - } - - // Notify new head of write queue - if (!writers_.empty()) { - writers_.front()->cv.Signal(); - } - - return status; -} - -// REQUIRES: Writer list must be non-empty -// REQUIRES: First writer must have a non-NULL batch -WriteBatch* DBImpl::BuildBatchGroup(Writer** last_writer) { - assert(!writers_.empty()); - Writer* first = writers_.front(); - WriteBatch* result = first->batch; - assert(result != NULL); - - size_t size = WriteBatchInternal::ByteSize(first->batch); - - // Allow the group to grow up to a maximum size, but if the - // original write is small, limit the growth so we do not slow - // down the small write too much. - size_t max_size = 1 << 20; - if (size <= (128<<10)) { - max_size = size + (128<<10); - } - - *last_writer = first; - std::deque::iterator iter = writers_.begin(); - ++iter; // Advance past "first" - for (; iter != writers_.end(); ++iter) { - Writer* w = *iter; - if (w->sync && !first->sync) { - // Do not include a sync write into a batch handled by a non-sync write. - break; - } - - if (w->batch != NULL) { - size += WriteBatchInternal::ByteSize(w->batch); - if (size > max_size) { - // Do not make batch too big - break; - } - - // Append to *result - if (result == first->batch) { - // Switch to temporary batch instead of disturbing caller's batch - result = tmp_batch_; - assert(WriteBatchInternal::Count(result) == 0); - WriteBatchInternal::Append(result, first->batch); - } - WriteBatchInternal::Append(result, w->batch); - } - *last_writer = w; - } - return result; -} - -// REQUIRES: mutex_ is held -// REQUIRES: this thread is currently at the front of the writer queue -Status DBImpl::MakeRoomForWrite(bool force) { - mutex_.AssertHeld(); - assert(!writers_.empty()); - bool allow_delay = !force; - Status s; - while (true) { - if (!bg_error_.ok()) { - // Yield previous error - s = bg_error_; - break; - } else if ( - allow_delay && - versions_->NumLevelFiles(0) >= config::kL0_SlowdownWritesTrigger) { - // We are getting close to hitting a hard limit on the number of - // L0 files. Rather than delaying a single write by several - // seconds when we hit the hard limit, start delaying each - // individual write by 1ms to reduce latency variance. Also, - // this delay hands over some CPU to the compaction thread in - // case it is sharing the same core as the writer. - mutex_.Unlock(); - env_->SleepForMicroseconds(1000); - allow_delay = false; // Do not delay a single write more than once - mutex_.Lock(); - } else if (!force && - (mem_->ApproximateMemoryUsage() <= options_.write_buffer_size)) { - // There is room in current memtable - break; - } else if (imm_ != NULL) { - // We have filled up the current memtable, but the previous - // one is still being compacted, so we wait. - Log(options_.info_log, "Current memtable full; waiting...\n"); - bg_cv_.Wait(); - } else if (versions_->NumLevelFiles(0) >= config::kL0_StopWritesTrigger) { - // There are too many level-0 files. - Log(options_.info_log, "Too many L0 files; waiting...\n"); - bg_cv_.Wait(); - } else { - // Attempt to switch to a new memtable and trigger compaction of old - assert(versions_->PrevLogNumber() == 0); - uint64_t new_log_number = versions_->NewFileNumber(); - WritableFile* lfile = NULL; - s = env_->NewWritableFile(LogFileName(dbname_, new_log_number), &lfile); - if (!s.ok()) { - // Avoid chewing through file number space in a tight loop. - versions_->ReuseFileNumber(new_log_number); - break; - } - delete log_; - delete logfile_; - logfile_ = lfile; - logfile_number_ = new_log_number; - log_ = new log::Writer(lfile); - imm_ = mem_; - has_imm_.Release_Store(imm_); - mem_ = new MemTable(internal_comparator_); - mem_->Ref(); - force = false; // Do not force another compaction if have room - MaybeScheduleCompaction(); - } - } - return s; -} - -bool DBImpl::GetProperty(const Slice& property, std::string* value) { - value->clear(); - - MutexLock l(&mutex_); - Slice in = property; - Slice prefix("leveldb."); - if (!in.starts_with(prefix)) return false; - in.remove_prefix(prefix.size()); - - if (in.starts_with("num-files-at-level")) { - in.remove_prefix(strlen("num-files-at-level")); - uint64_t level; - bool ok = ConsumeDecimalNumber(&in, &level) && in.empty(); - if (!ok || level >= config::kNumLevels) { - return false; - } else { - char buf[100]; - snprintf(buf, sizeof(buf), "%d", - versions_->NumLevelFiles(static_cast(level))); - *value = buf; - return true; - } - } else if (in == "stats") { - char buf[200]; - snprintf(buf, sizeof(buf), - " Compactions\n" - "Level Files Size(MB) Time(sec) Read(MB) Write(MB)\n" - "--------------------------------------------------\n" - ); - value->append(buf); - for (int level = 0; level < config::kNumLevels; level++) { - int files = versions_->NumLevelFiles(level); - if (stats_[level].micros > 0 || files > 0) { - snprintf( - buf, sizeof(buf), - "%3d %8d %8.0f %9.0f %8.0f %9.0f\n", - level, - files, - versions_->NumLevelBytes(level) / 1048576.0, - stats_[level].micros / 1e6, - stats_[level].bytes_read / 1048576.0, - stats_[level].bytes_written / 1048576.0); - value->append(buf); - } - } - return true; - } else if (in == "sstables") { - *value = versions_->current()->DebugString(); - return true; - } - - return false; -} - -void DBImpl::GetApproximateSizes( - const Range* range, int n, - uint64_t* sizes) { - // TODO(opt): better implementation - Version* v; - { - MutexLock l(&mutex_); - versions_->current()->Ref(); - v = versions_->current(); - } - - for (int i = 0; i < n; i++) { - // Convert user_key into a corresponding internal key. - InternalKey k1(range[i].start, kMaxSequenceNumber, kValueTypeForSeek); - InternalKey k2(range[i].limit, kMaxSequenceNumber, kValueTypeForSeek); - uint64_t start = versions_->ApproximateOffsetOf(v, k1); - uint64_t limit = versions_->ApproximateOffsetOf(v, k2); - sizes[i] = (limit >= start ? limit - start : 0); - } - - { - MutexLock l(&mutex_); - v->Unref(); - } -} - -// Default implementations of convenience methods that subclasses of DB -// can call if they wish -Status DB::Put(const WriteOptions& opt, const Slice& key, const Slice& value) { - WriteBatch batch; - batch.Put(key, value); - return Write(opt, &batch); -} - -Status DB::Delete(const WriteOptions& opt, const Slice& key) { - WriteBatch batch; - batch.Delete(key); - return Write(opt, &batch); -} - -DB::~DB() { } - -Status DB::Open(const Options& options, const std::string& dbname, - DB** dbptr) { - *dbptr = NULL; - - DBImpl* impl = new DBImpl(options, dbname); - impl->mutex_.Lock(); - VersionEdit edit; - Status s = impl->Recover(&edit); // Handles create_if_missing, error_if_exists - if (s.ok()) { - uint64_t new_log_number = impl->versions_->NewFileNumber(); - WritableFile* lfile; - s = options.env->NewWritableFile(LogFileName(dbname, new_log_number), - &lfile); - if (s.ok()) { - edit.SetLogNumber(new_log_number); - impl->logfile_ = lfile; - impl->logfile_number_ = new_log_number; - impl->log_ = new log::Writer(lfile); - s = impl->versions_->LogAndApply(&edit, &impl->mutex_); - } - if (s.ok()) { - impl->DeleteObsoleteFiles(); - impl->MaybeScheduleCompaction(); - } - } - impl->mutex_.Unlock(); - if (s.ok()) { - *dbptr = impl; - } else { - delete impl; - } - return s; -} - -Snapshot::~Snapshot() { -} - -Status DestroyDB(const std::string& dbname, const Options& options) { - Env* env = options.env; - std::vector filenames; - // Ignore error in case directory does not exist - env->GetChildren(dbname, &filenames); - if (filenames.empty()) { - return Status::OK(); - } - - FileLock* lock; - const std::string lockname = LockFileName(dbname); - Status result = env->LockFile(lockname, &lock); - if (result.ok()) { - uint64_t number; - FileType type; - for (size_t i = 0; i < filenames.size(); i++) { - if (ParseFileName(filenames[i], &number, &type) && - type != kDBLockFile) { // Lock file will be deleted at end - Status del = env->DeleteFile(dbname + "/" + filenames[i]); - if (result.ok() && !del.ok()) { - result = del; - } - } - } - env->UnlockFile(lock); // Ignore error since state is already gone - env->DeleteFile(lockname); - env->DeleteDir(dbname); // Ignore error in case dir contains other files - } - return result; -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/db_impl.h b/leveldb-1.18/db/db_impl.h deleted file mode 100644 index cfc9981..0000000 --- a/leveldb-1.18/db/db_impl.h +++ /dev/null @@ -1,211 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_DB_IMPL_H_ -#define STORAGE_LEVELDB_DB_DB_IMPL_H_ - -#include -#include -#include "db/dbformat.h" -#include "db/log_writer.h" -#include "db/snapshot.h" -#include "leveldb/db.h" -#include "leveldb/env.h" -#include "port/port.h" -#include "port/thread_annotations.h" - -namespace leveldb { - -class MemTable; -class TableCache; -class Version; -class VersionEdit; -class VersionSet; - -class DBImpl : public DB { - public: - DBImpl(const Options& options, const std::string& dbname); - virtual ~DBImpl(); - - // Implementations of the DB interface - virtual Status Put(const WriteOptions&, const Slice& key, const Slice& value); - virtual Status Delete(const WriteOptions&, const Slice& key); - virtual Status Write(const WriteOptions& options, WriteBatch* updates); - virtual Status Get(const ReadOptions& options, - const Slice& key, - std::string* value); - virtual Iterator* NewIterator(const ReadOptions&); - virtual const Snapshot* GetSnapshot(); - virtual void ReleaseSnapshot(const Snapshot* snapshot); - virtual bool GetProperty(const Slice& property, std::string* value); - virtual void GetApproximateSizes(const Range* range, int n, uint64_t* sizes); - virtual void CompactRange(const Slice* begin, const Slice* end); - - // Extra methods (for testing) that are not in the public DB interface - - // Compact any files in the named level that overlap [*begin,*end] - void TEST_CompactRange(int level, const Slice* begin, const Slice* end); - - // Force current memtable contents to be compacted. - Status TEST_CompactMemTable(); - - // Return an internal iterator over the current state of the database. - // The keys of this iterator are internal keys (see format.h). - // The returned iterator should be deleted when no longer needed. - Iterator* TEST_NewInternalIterator(); - - // Return the maximum overlapping data (in bytes) at next level for any - // file at a level >= 1. - int64_t TEST_MaxNextLevelOverlappingBytes(); - - // Record a sample of bytes read at the specified internal key. - // Samples are taken approximately once every config::kReadBytesPeriod - // bytes. - void RecordReadSample(Slice key); - - private: - friend class DB; - struct CompactionState; - struct Writer; - - Iterator* NewInternalIterator(const ReadOptions&, - SequenceNumber* latest_snapshot, - uint32_t* seed); - - Status NewDB(); - - // Recover the descriptor from persistent storage. May do a significant - // amount of work to recover recently logged updates. Any changes to - // be made to the descriptor are added to *edit. - Status Recover(VersionEdit* edit) EXCLUSIVE_LOCKS_REQUIRED(mutex_); - - void MaybeIgnoreError(Status* s) const; - - // Delete any unneeded files and stale in-memory entries. - void DeleteObsoleteFiles(); - - // Compact the in-memory write buffer to disk. Switches to a new - // log-file/memtable and writes a new descriptor iff successful. - // Errors are recorded in bg_error_. - void CompactMemTable() EXCLUSIVE_LOCKS_REQUIRED(mutex_); - - Status RecoverLogFile(uint64_t log_number, - VersionEdit* edit, - SequenceNumber* max_sequence) - EXCLUSIVE_LOCKS_REQUIRED(mutex_); - - Status WriteLevel0Table(MemTable* mem, VersionEdit* edit, Version* base) - EXCLUSIVE_LOCKS_REQUIRED(mutex_); - - Status MakeRoomForWrite(bool force /* compact even if there is room? */) - EXCLUSIVE_LOCKS_REQUIRED(mutex_); - WriteBatch* BuildBatchGroup(Writer** last_writer); - - void RecordBackgroundError(const Status& s); - - void MaybeScheduleCompaction() EXCLUSIVE_LOCKS_REQUIRED(mutex_); - static void BGWork(void* db); - void BackgroundCall(); - void BackgroundCompaction() EXCLUSIVE_LOCKS_REQUIRED(mutex_); - void CleanupCompaction(CompactionState* compact) - EXCLUSIVE_LOCKS_REQUIRED(mutex_); - Status DoCompactionWork(CompactionState* compact) - EXCLUSIVE_LOCKS_REQUIRED(mutex_); - - Status OpenCompactionOutputFile(CompactionState* compact); - Status FinishCompactionOutputFile(CompactionState* compact, Iterator* input); - Status InstallCompactionResults(CompactionState* compact) - EXCLUSIVE_LOCKS_REQUIRED(mutex_); - - // Constant after construction - Env* const env_; - const InternalKeyComparator internal_comparator_; - const InternalFilterPolicy internal_filter_policy_; - const Options options_; // options_.comparator == &internal_comparator_ - bool owns_info_log_; - bool owns_cache_; - const std::string dbname_; - - // table_cache_ provides its own synchronization - TableCache* table_cache_; - - // Lock over the persistent DB state. Non-NULL iff successfully acquired. - FileLock* db_lock_; - - // State below is protected by mutex_ - port::Mutex mutex_; - port::AtomicPointer shutting_down_; - port::CondVar bg_cv_; // Signalled when background work finishes - MemTable* mem_; - MemTable* imm_; // Memtable being compacted - port::AtomicPointer has_imm_; // So bg thread can detect non-NULL imm_ - WritableFile* logfile_; - uint64_t logfile_number_; - log::Writer* log_; - uint32_t seed_; // For sampling. - - // Queue of writers. - std::deque writers_; - WriteBatch* tmp_batch_; - - SnapshotList snapshots_; - - // Set of table files to protect from deletion because they are - // part of ongoing compactions. - std::set pending_outputs_; - - // Has a background compaction been scheduled or is running? - bool bg_compaction_scheduled_; - - // Information for a manual compaction - struct ManualCompaction { - int level; - bool done; - const InternalKey* begin; // NULL means beginning of key range - const InternalKey* end; // NULL means end of key range - InternalKey tmp_storage; // Used to keep track of compaction progress - }; - ManualCompaction* manual_compaction_; - - VersionSet* versions_; - - // Have we encountered a background error in paranoid mode? - Status bg_error_; - - // Per level compaction stats. stats_[level] stores the stats for - // compactions that produced data for the specified "level". - struct CompactionStats { - int64_t micros; - int64_t bytes_read; - int64_t bytes_written; - - CompactionStats() : micros(0), bytes_read(0), bytes_written(0) { } - - void Add(const CompactionStats& c) { - this->micros += c.micros; - this->bytes_read += c.bytes_read; - this->bytes_written += c.bytes_written; - } - }; - CompactionStats stats_[config::kNumLevels]; - - // No copying allowed - DBImpl(const DBImpl&); - void operator=(const DBImpl&); - - const Comparator* user_comparator() const { - return internal_comparator_.user_comparator(); - } -}; - -// Sanitize db options. The caller should delete result.info_log if -// it is not equal to src.info_log. -extern Options SanitizeOptions(const std::string& db, - const InternalKeyComparator* icmp, - const InternalFilterPolicy* ipolicy, - const Options& src); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_DB_IMPL_H_ diff --git a/leveldb-1.18/db/db_iter.cc b/leveldb-1.18/db/db_iter.cc deleted file mode 100644 index 3b2035e..0000000 --- a/leveldb-1.18/db/db_iter.cc +++ /dev/null @@ -1,317 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/db_iter.h" - -#include "db/filename.h" -#include "db/db_impl.h" -#include "db/dbformat.h" -#include "leveldb/env.h" -#include "leveldb/iterator.h" -#include "port/port.h" -#include "util/logging.h" -#include "util/mutexlock.h" -#include "util/random.h" - -namespace leveldb { - -#if 0 -static void DumpInternalIter(Iterator* iter) { - for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { - ParsedInternalKey k; - if (!ParseInternalKey(iter->key(), &k)) { - fprintf(stderr, "Corrupt '%s'\n", EscapeString(iter->key()).c_str()); - } else { - fprintf(stderr, "@ '%s'\n", k.DebugString().c_str()); - } - } -} -#endif - -namespace { - -// Memtables and sstables that make the DB representation contain -// (userkey,seq,type) => uservalue entries. DBIter -// combines multiple entries for the same userkey found in the DB -// representation into a single entry while accounting for sequence -// numbers, deletion markers, overwrites, etc. -class DBIter: public Iterator { - public: - // Which direction is the iterator currently moving? - // (1) When moving forward, the internal iterator is positioned at - // the exact entry that yields this->key(), this->value() - // (2) When moving backwards, the internal iterator is positioned - // just before all entries whose user key == this->key(). - enum Direction { - kForward, - kReverse - }; - - DBIter(DBImpl* db, const Comparator* cmp, Iterator* iter, SequenceNumber s, - uint32_t seed) - : db_(db), - user_comparator_(cmp), - iter_(iter), - sequence_(s), - direction_(kForward), - valid_(false), - rnd_(seed), - bytes_counter_(RandomPeriod()) { - } - virtual ~DBIter() { - delete iter_; - } - virtual bool Valid() const { return valid_; } - virtual Slice key() const { - assert(valid_); - return (direction_ == kForward) ? ExtractUserKey(iter_->key()) : saved_key_; - } - virtual Slice value() const { - assert(valid_); - return (direction_ == kForward) ? iter_->value() : saved_value_; - } - virtual Status status() const { - if (status_.ok()) { - return iter_->status(); - } else { - return status_; - } - } - - virtual void Next(); - virtual void Prev(); - virtual void Seek(const Slice& target); - virtual void SeekToFirst(); - virtual void SeekToLast(); - - private: - void FindNextUserEntry(bool skipping, std::string* skip); - void FindPrevUserEntry(); - bool ParseKey(ParsedInternalKey* key); - - inline void SaveKey(const Slice& k, std::string* dst) { - dst->assign(k.data(), k.size()); - } - - inline void ClearSavedValue() { - if (saved_value_.capacity() > 1048576) { - std::string empty; - swap(empty, saved_value_); - } else { - saved_value_.clear(); - } - } - - // Pick next gap with average value of config::kReadBytesPeriod. - ssize_t RandomPeriod() { - return rnd_.Uniform(2*config::kReadBytesPeriod); - } - - DBImpl* db_; - const Comparator* const user_comparator_; - Iterator* const iter_; - SequenceNumber const sequence_; - - Status status_; - std::string saved_key_; // == current key when direction_==kReverse - std::string saved_value_; // == current raw value when direction_==kReverse - Direction direction_; - bool valid_; - - Random rnd_; - ssize_t bytes_counter_; - - // No copying allowed - DBIter(const DBIter&); - void operator=(const DBIter&); -}; - -inline bool DBIter::ParseKey(ParsedInternalKey* ikey) { - Slice k = iter_->key(); - ssize_t n = k.size() + iter_->value().size(); - bytes_counter_ -= n; - while (bytes_counter_ < 0) { - bytes_counter_ += RandomPeriod(); - db_->RecordReadSample(k); - } - if (!ParseInternalKey(k, ikey)) { - status_ = Status::Corruption("corrupted internal key in DBIter"); - return false; - } else { - return true; - } -} - -void DBIter::Next() { - assert(valid_); - - if (direction_ == kReverse) { // Switch directions? - direction_ = kForward; - // iter_ is pointing just before the entries for this->key(), - // so advance into the range of entries for this->key() and then - // use the normal skipping code below. - if (!iter_->Valid()) { - iter_->SeekToFirst(); - } else { - iter_->Next(); - } - if (!iter_->Valid()) { - valid_ = false; - saved_key_.clear(); - return; - } - // saved_key_ already contains the key to skip past. - } else { - // Store in saved_key_ the current key so we skip it below. - SaveKey(ExtractUserKey(iter_->key()), &saved_key_); - } - - FindNextUserEntry(true, &saved_key_); -} - -void DBIter::FindNextUserEntry(bool skipping, std::string* skip) { - // Loop until we hit an acceptable entry to yield - assert(iter_->Valid()); - assert(direction_ == kForward); - do { - ParsedInternalKey ikey; - if (ParseKey(&ikey) && ikey.sequence <= sequence_) { - switch (ikey.type) { - case kTypeDeletion: - // Arrange to skip all upcoming entries for this key since - // they are hidden by this deletion. - SaveKey(ikey.user_key, skip); - skipping = true; - break; - case kTypeValue: - if (skipping && - user_comparator_->Compare(ikey.user_key, *skip) <= 0) { - // Entry hidden - } else { - valid_ = true; - saved_key_.clear(); - return; - } - break; - } - } - iter_->Next(); - } while (iter_->Valid()); - saved_key_.clear(); - valid_ = false; -} - -void DBIter::Prev() { - assert(valid_); - - if (direction_ == kForward) { // Switch directions? - // iter_ is pointing at the current entry. Scan backwards until - // the key changes so we can use the normal reverse scanning code. - assert(iter_->Valid()); // Otherwise valid_ would have been false - SaveKey(ExtractUserKey(iter_->key()), &saved_key_); - while (true) { - iter_->Prev(); - if (!iter_->Valid()) { - valid_ = false; - saved_key_.clear(); - ClearSavedValue(); - return; - } - if (user_comparator_->Compare(ExtractUserKey(iter_->key()), - saved_key_) < 0) { - break; - } - } - direction_ = kReverse; - } - - FindPrevUserEntry(); -} - -void DBIter::FindPrevUserEntry() { - assert(direction_ == kReverse); - - ValueType value_type = kTypeDeletion; - if (iter_->Valid()) { - do { - ParsedInternalKey ikey; - if (ParseKey(&ikey) && ikey.sequence <= sequence_) { - if ((value_type != kTypeDeletion) && - user_comparator_->Compare(ikey.user_key, saved_key_) < 0) { - // We encountered a non-deleted value in entries for previous keys, - break; - } - value_type = ikey.type; - if (value_type == kTypeDeletion) { - saved_key_.clear(); - ClearSavedValue(); - } else { - Slice raw_value = iter_->value(); - if (saved_value_.capacity() > raw_value.size() + 1048576) { - std::string empty; - swap(empty, saved_value_); - } - SaveKey(ExtractUserKey(iter_->key()), &saved_key_); - saved_value_.assign(raw_value.data(), raw_value.size()); - } - } - iter_->Prev(); - } while (iter_->Valid()); - } - - if (value_type == kTypeDeletion) { - // End - valid_ = false; - saved_key_.clear(); - ClearSavedValue(); - direction_ = kForward; - } else { - valid_ = true; - } -} - -void DBIter::Seek(const Slice& target) { - direction_ = kForward; - ClearSavedValue(); - saved_key_.clear(); - AppendInternalKey( - &saved_key_, ParsedInternalKey(target, sequence_, kValueTypeForSeek)); - iter_->Seek(saved_key_); - if (iter_->Valid()) { - FindNextUserEntry(false, &saved_key_ /* temporary storage */); - } else { - valid_ = false; - } -} - -void DBIter::SeekToFirst() { - direction_ = kForward; - ClearSavedValue(); - iter_->SeekToFirst(); - if (iter_->Valid()) { - FindNextUserEntry(false, &saved_key_ /* temporary storage */); - } else { - valid_ = false; - } -} - -void DBIter::SeekToLast() { - direction_ = kReverse; - ClearSavedValue(); - iter_->SeekToLast(); - FindPrevUserEntry(); -} - -} // anonymous namespace - -Iterator* NewDBIterator( - DBImpl* db, - const Comparator* user_key_comparator, - Iterator* internal_iter, - SequenceNumber sequence, - uint32_t seed) { - return new DBIter(db, user_key_comparator, internal_iter, sequence, seed); -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/db_iter.h b/leveldb-1.18/db/db_iter.h deleted file mode 100644 index 04927e9..0000000 --- a/leveldb-1.18/db/db_iter.h +++ /dev/null @@ -1,28 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_DB_ITER_H_ -#define STORAGE_LEVELDB_DB_DB_ITER_H_ - -#include -#include "leveldb/db.h" -#include "db/dbformat.h" - -namespace leveldb { - -class DBImpl; - -// Return a new iterator that converts internal keys (yielded by -// "*internal_iter") that were live at the specified "sequence" number -// into appropriate user keys. -extern Iterator* NewDBIterator( - DBImpl* db, - const Comparator* user_key_comparator, - Iterator* internal_iter, - SequenceNumber sequence, - uint32_t seed); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_DB_ITER_H_ diff --git a/leveldb-1.18/db/db_test.cc b/leveldb-1.18/db/db_test.cc deleted file mode 100644 index 0fed913..0000000 --- a/leveldb-1.18/db/db_test.cc +++ /dev/null @@ -1,2128 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/db.h" -#include "leveldb/filter_policy.h" -#include "db/db_impl.h" -#include "db/filename.h" -#include "db/version_set.h" -#include "db/write_batch_internal.h" -#include "leveldb/cache.h" -#include "leveldb/env.h" -#include "leveldb/table.h" -#include "util/hash.h" -#include "util/logging.h" -#include "util/mutexlock.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace leveldb { - -static std::string RandomString(Random* rnd, int len) { - std::string r; - test::RandomString(rnd, len, &r); - return r; -} - -namespace { -class AtomicCounter { - private: - port::Mutex mu_; - int count_; - public: - AtomicCounter() : count_(0) { } - void Increment() { - IncrementBy(1); - } - void IncrementBy(int count) { - MutexLock l(&mu_); - count_ += count; - } - int Read() { - MutexLock l(&mu_); - return count_; - } - void Reset() { - MutexLock l(&mu_); - count_ = 0; - } -}; - -void DelayMilliseconds(int millis) { - Env::Default()->SleepForMicroseconds(millis * 1000); -} -} - -// Special Env used to delay background operations -class SpecialEnv : public EnvWrapper { - public: - // sstable/log Sync() calls are blocked while this pointer is non-NULL. - port::AtomicPointer delay_data_sync_; - - // sstable/log Sync() calls return an error. - port::AtomicPointer data_sync_error_; - - // Simulate no-space errors while this pointer is non-NULL. - port::AtomicPointer no_space_; - - // Simulate non-writable file system while this pointer is non-NULL - port::AtomicPointer non_writable_; - - // Force sync of manifest files to fail while this pointer is non-NULL - port::AtomicPointer manifest_sync_error_; - - // Force write to manifest files to fail while this pointer is non-NULL - port::AtomicPointer manifest_write_error_; - - bool count_random_reads_; - AtomicCounter random_read_counter_; - - explicit SpecialEnv(Env* base) : EnvWrapper(base) { - delay_data_sync_.Release_Store(NULL); - data_sync_error_.Release_Store(NULL); - no_space_.Release_Store(NULL); - non_writable_.Release_Store(NULL); - count_random_reads_ = false; - manifest_sync_error_.Release_Store(NULL); - manifest_write_error_.Release_Store(NULL); - } - - Status NewWritableFile(const std::string& f, WritableFile** r) { - class DataFile : public WritableFile { - private: - SpecialEnv* env_; - WritableFile* base_; - - public: - DataFile(SpecialEnv* env, WritableFile* base) - : env_(env), - base_(base) { - } - ~DataFile() { delete base_; } - Status Append(const Slice& data) { - if (env_->no_space_.Acquire_Load() != NULL) { - // Drop writes on the floor - return Status::OK(); - } else { - return base_->Append(data); - } - } - Status Close() { return base_->Close(); } - Status Flush() { return base_->Flush(); } - Status Sync() { - if (env_->data_sync_error_.Acquire_Load() != NULL) { - return Status::IOError("simulated data sync error"); - } - while (env_->delay_data_sync_.Acquire_Load() != NULL) { - DelayMilliseconds(100); - } - return base_->Sync(); - } - }; - class ManifestFile : public WritableFile { - private: - SpecialEnv* env_; - WritableFile* base_; - public: - ManifestFile(SpecialEnv* env, WritableFile* b) : env_(env), base_(b) { } - ~ManifestFile() { delete base_; } - Status Append(const Slice& data) { - if (env_->manifest_write_error_.Acquire_Load() != NULL) { - return Status::IOError("simulated writer error"); - } else { - return base_->Append(data); - } - } - Status Close() { return base_->Close(); } - Status Flush() { return base_->Flush(); } - Status Sync() { - if (env_->manifest_sync_error_.Acquire_Load() != NULL) { - return Status::IOError("simulated sync error"); - } else { - return base_->Sync(); - } - } - }; - - if (non_writable_.Acquire_Load() != NULL) { - return Status::IOError("simulated write error"); - } - - Status s = target()->NewWritableFile(f, r); - if (s.ok()) { - if (strstr(f.c_str(), ".ldb") != NULL || - strstr(f.c_str(), ".log") != NULL) { - *r = new DataFile(this, *r); - } else if (strstr(f.c_str(), "MANIFEST") != NULL) { - *r = new ManifestFile(this, *r); - } - } - return s; - } - - Status NewRandomAccessFile(const std::string& f, RandomAccessFile** r) { - class CountingFile : public RandomAccessFile { - private: - RandomAccessFile* target_; - AtomicCounter* counter_; - public: - CountingFile(RandomAccessFile* target, AtomicCounter* counter) - : target_(target), counter_(counter) { - } - virtual ~CountingFile() { delete target_; } - virtual Status Read(uint64_t offset, size_t n, Slice* result, - char* scratch) const { - counter_->Increment(); - return target_->Read(offset, n, result, scratch); - } - }; - - Status s = target()->NewRandomAccessFile(f, r); - if (s.ok() && count_random_reads_) { - *r = new CountingFile(*r, &random_read_counter_); - } - return s; - } -}; - -class DBTest { - private: - const FilterPolicy* filter_policy_; - - // Sequence of option configurations to try - enum OptionConfig { - kDefault, - kFilter, - kUncompressed, - kEnd - }; - int option_config_; - - public: - std::string dbname_; - SpecialEnv* env_; - DB* db_; - - Options last_options_; - - DBTest() : option_config_(kDefault), - env_(new SpecialEnv(Env::Default())) { - filter_policy_ = NewBloomFilterPolicy(10); - dbname_ = test::TmpDir() + "/db_test"; - DestroyDB(dbname_, Options()); - db_ = NULL; - Reopen(); - } - - ~DBTest() { - delete db_; - DestroyDB(dbname_, Options()); - delete env_; - delete filter_policy_; - } - - // Switch to a fresh database with the next option configuration to - // test. Return false if there are no more configurations to test. - bool ChangeOptions() { - option_config_++; - if (option_config_ >= kEnd) { - return false; - } else { - DestroyAndReopen(); - return true; - } - } - - // Return the current option configuration. - Options CurrentOptions() { - Options options; - switch (option_config_) { - case kFilter: - options.filter_policy = filter_policy_; - break; - case kUncompressed: - options.compression = kNoCompression; - break; - default: - break; - } - return options; - } - - DBImpl* dbfull() { - return reinterpret_cast(db_); - } - - void Reopen(Options* options = NULL) { - ASSERT_OK(TryReopen(options)); - } - - void Close() { - delete db_; - db_ = NULL; - } - - void DestroyAndReopen(Options* options = NULL) { - delete db_; - db_ = NULL; - DestroyDB(dbname_, Options()); - ASSERT_OK(TryReopen(options)); - } - - Status TryReopen(Options* options) { - delete db_; - db_ = NULL; - Options opts; - if (options != NULL) { - opts = *options; - } else { - opts = CurrentOptions(); - opts.create_if_missing = true; - } - last_options_ = opts; - - return DB::Open(opts, dbname_, &db_); - } - - Status Put(const std::string& k, const std::string& v) { - return db_->Put(WriteOptions(), k, v); - } - - Status Delete(const std::string& k) { - return db_->Delete(WriteOptions(), k); - } - - std::string Get(const std::string& k, const Snapshot* snapshot = NULL) { - ReadOptions options; - options.snapshot = snapshot; - std::string result; - Status s = db_->Get(options, k, &result); - if (s.IsNotFound()) { - result = "NOT_FOUND"; - } else if (!s.ok()) { - result = s.ToString(); - } - return result; - } - - // Return a string that contains all key,value pairs in order, - // formatted like "(k1->v1)(k2->v2)". - std::string Contents() { - std::vector forward; - std::string result; - Iterator* iter = db_->NewIterator(ReadOptions()); - for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { - std::string s = IterStatus(iter); - result.push_back('('); - result.append(s); - result.push_back(')'); - forward.push_back(s); - } - - // Check reverse iteration results are the reverse of forward results - size_t matched = 0; - for (iter->SeekToLast(); iter->Valid(); iter->Prev()) { - ASSERT_LT(matched, forward.size()); - ASSERT_EQ(IterStatus(iter), forward[forward.size() - matched - 1]); - matched++; - } - ASSERT_EQ(matched, forward.size()); - - delete iter; - return result; - } - - std::string AllEntriesFor(const Slice& user_key) { - Iterator* iter = dbfull()->TEST_NewInternalIterator(); - InternalKey target(user_key, kMaxSequenceNumber, kTypeValue); - iter->Seek(target.Encode()); - std::string result; - if (!iter->status().ok()) { - result = iter->status().ToString(); - } else { - result = "[ "; - bool first = true; - while (iter->Valid()) { - ParsedInternalKey ikey; - if (!ParseInternalKey(iter->key(), &ikey)) { - result += "CORRUPTED"; - } else { - if (last_options_.comparator->Compare(ikey.user_key, user_key) != 0) { - break; - } - if (!first) { - result += ", "; - } - first = false; - switch (ikey.type) { - case kTypeValue: - result += iter->value().ToString(); - break; - case kTypeDeletion: - result += "DEL"; - break; - } - } - iter->Next(); - } - if (!first) { - result += " "; - } - result += "]"; - } - delete iter; - return result; - } - - int NumTableFilesAtLevel(int level) { - std::string property; - ASSERT_TRUE( - db_->GetProperty("leveldb.num-files-at-level" + NumberToString(level), - &property)); - return atoi(property.c_str()); - } - - int TotalTableFiles() { - int result = 0; - for (int level = 0; level < config::kNumLevels; level++) { - result += NumTableFilesAtLevel(level); - } - return result; - } - - // Return spread of files per level - std::string FilesPerLevel() { - std::string result; - int last_non_zero_offset = 0; - for (int level = 0; level < config::kNumLevels; level++) { - int f = NumTableFilesAtLevel(level); - char buf[100]; - snprintf(buf, sizeof(buf), "%s%d", (level ? "," : ""), f); - result += buf; - if (f > 0) { - last_non_zero_offset = result.size(); - } - } - result.resize(last_non_zero_offset); - return result; - } - - int CountFiles() { - std::vector files; - env_->GetChildren(dbname_, &files); - return static_cast(files.size()); - } - - uint64_t Size(const Slice& start, const Slice& limit) { - Range r(start, limit); - uint64_t size; - db_->GetApproximateSizes(&r, 1, &size); - return size; - } - - void Compact(const Slice& start, const Slice& limit) { - db_->CompactRange(&start, &limit); - } - - // Do n memtable compactions, each of which produces an sstable - // covering the range [small,large]. - void MakeTables(int n, const std::string& small, const std::string& large) { - for (int i = 0; i < n; i++) { - Put(small, "begin"); - Put(large, "end"); - dbfull()->TEST_CompactMemTable(); - } - } - - // Prevent pushing of new sstables into deeper levels by adding - // tables that cover a specified range to all levels. - void FillLevels(const std::string& smallest, const std::string& largest) { - MakeTables(config::kNumLevels, smallest, largest); - } - - void DumpFileCounts(const char* label) { - fprintf(stderr, "---\n%s:\n", label); - fprintf(stderr, "maxoverlap: %lld\n", - static_cast( - dbfull()->TEST_MaxNextLevelOverlappingBytes())); - for (int level = 0; level < config::kNumLevels; level++) { - int num = NumTableFilesAtLevel(level); - if (num > 0) { - fprintf(stderr, " level %3d : %d files\n", level, num); - } - } - } - - std::string DumpSSTableList() { - std::string property; - db_->GetProperty("leveldb.sstables", &property); - return property; - } - - std::string IterStatus(Iterator* iter) { - std::string result; - if (iter->Valid()) { - result = iter->key().ToString() + "->" + iter->value().ToString(); - } else { - result = "(invalid)"; - } - return result; - } - - bool DeleteAnSSTFile() { - std::vector filenames; - ASSERT_OK(env_->GetChildren(dbname_, &filenames)); - uint64_t number; - FileType type; - for (size_t i = 0; i < filenames.size(); i++) { - if (ParseFileName(filenames[i], &number, &type) && type == kTableFile) { - ASSERT_OK(env_->DeleteFile(TableFileName(dbname_, number))); - return true; - } - } - return false; - } - - // Returns number of files renamed. - int RenameLDBToSST() { - std::vector filenames; - ASSERT_OK(env_->GetChildren(dbname_, &filenames)); - uint64_t number; - FileType type; - int files_renamed = 0; - for (size_t i = 0; i < filenames.size(); i++) { - if (ParseFileName(filenames[i], &number, &type) && type == kTableFile) { - const std::string from = TableFileName(dbname_, number); - const std::string to = SSTTableFileName(dbname_, number); - ASSERT_OK(env_->RenameFile(from, to)); - files_renamed++; - } - } - return files_renamed; - } -}; - -TEST(DBTest, Empty) { - do { - ASSERT_TRUE(db_ != NULL); - ASSERT_EQ("NOT_FOUND", Get("foo")); - } while (ChangeOptions()); -} - -TEST(DBTest, ReadWrite) { - do { - ASSERT_OK(Put("foo", "v1")); - ASSERT_EQ("v1", Get("foo")); - ASSERT_OK(Put("bar", "v2")); - ASSERT_OK(Put("foo", "v3")); - ASSERT_EQ("v3", Get("foo")); - ASSERT_EQ("v2", Get("bar")); - } while (ChangeOptions()); -} - -TEST(DBTest, PutDeleteGet) { - do { - ASSERT_OK(db_->Put(WriteOptions(), "foo", "v1")); - ASSERT_EQ("v1", Get("foo")); - ASSERT_OK(db_->Put(WriteOptions(), "foo", "v2")); - ASSERT_EQ("v2", Get("foo")); - ASSERT_OK(db_->Delete(WriteOptions(), "foo")); - ASSERT_EQ("NOT_FOUND", Get("foo")); - } while (ChangeOptions()); -} - -TEST(DBTest, GetFromImmutableLayer) { - do { - Options options = CurrentOptions(); - options.env = env_; - options.write_buffer_size = 100000; // Small write buffer - Reopen(&options); - - ASSERT_OK(Put("foo", "v1")); - ASSERT_EQ("v1", Get("foo")); - - env_->delay_data_sync_.Release_Store(env_); // Block sync calls - Put("k1", std::string(100000, 'x')); // Fill memtable - Put("k2", std::string(100000, 'y')); // Trigger compaction - ASSERT_EQ("v1", Get("foo")); - env_->delay_data_sync_.Release_Store(NULL); // Release sync calls - } while (ChangeOptions()); -} - -TEST(DBTest, GetFromVersions) { - do { - ASSERT_OK(Put("foo", "v1")); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("v1", Get("foo")); - } while (ChangeOptions()); -} - -TEST(DBTest, GetSnapshot) { - do { - // Try with both a short key and a long key - for (int i = 0; i < 2; i++) { - std::string key = (i == 0) ? std::string("foo") : std::string(200, 'x'); - ASSERT_OK(Put(key, "v1")); - const Snapshot* s1 = db_->GetSnapshot(); - ASSERT_OK(Put(key, "v2")); - ASSERT_EQ("v2", Get(key)); - ASSERT_EQ("v1", Get(key, s1)); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("v2", Get(key)); - ASSERT_EQ("v1", Get(key, s1)); - db_->ReleaseSnapshot(s1); - } - } while (ChangeOptions()); -} - -TEST(DBTest, GetLevel0Ordering) { - do { - // Check that we process level-0 files in correct order. The code - // below generates two level-0 files where the earlier one comes - // before the later one in the level-0 file list since the earlier - // one has a smaller "smallest" key. - ASSERT_OK(Put("bar", "b")); - ASSERT_OK(Put("foo", "v1")); - dbfull()->TEST_CompactMemTable(); - ASSERT_OK(Put("foo", "v2")); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("v2", Get("foo")); - } while (ChangeOptions()); -} - -TEST(DBTest, GetOrderedByLevels) { - do { - ASSERT_OK(Put("foo", "v1")); - Compact("a", "z"); - ASSERT_EQ("v1", Get("foo")); - ASSERT_OK(Put("foo", "v2")); - ASSERT_EQ("v2", Get("foo")); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("v2", Get("foo")); - } while (ChangeOptions()); -} - -TEST(DBTest, GetPicksCorrectFile) { - do { - // Arrange to have multiple files in a non-level-0 level. - ASSERT_OK(Put("a", "va")); - Compact("a", "b"); - ASSERT_OK(Put("x", "vx")); - Compact("x", "y"); - ASSERT_OK(Put("f", "vf")); - Compact("f", "g"); - ASSERT_EQ("va", Get("a")); - ASSERT_EQ("vf", Get("f")); - ASSERT_EQ("vx", Get("x")); - } while (ChangeOptions()); -} - -TEST(DBTest, GetEncountersEmptyLevel) { - do { - // Arrange for the following to happen: - // * sstable A in level 0 - // * nothing in level 1 - // * sstable B in level 2 - // Then do enough Get() calls to arrange for an automatic compaction - // of sstable A. A bug would cause the compaction to be marked as - // occurring at level 1 (instead of the correct level 0). - - // Step 1: First place sstables in levels 0 and 2 - int compaction_count = 0; - while (NumTableFilesAtLevel(0) == 0 || - NumTableFilesAtLevel(2) == 0) { - ASSERT_LE(compaction_count, 100) << "could not fill levels 0 and 2"; - compaction_count++; - Put("a", "begin"); - Put("z", "end"); - dbfull()->TEST_CompactMemTable(); - } - - // Step 2: clear level 1 if necessary. - dbfull()->TEST_CompactRange(1, NULL, NULL); - ASSERT_EQ(NumTableFilesAtLevel(0), 1); - ASSERT_EQ(NumTableFilesAtLevel(1), 0); - ASSERT_EQ(NumTableFilesAtLevel(2), 1); - - // Step 3: read a bunch of times - for (int i = 0; i < 1000; i++) { - ASSERT_EQ("NOT_FOUND", Get("missing")); - } - - // Step 4: Wait for compaction to finish - DelayMilliseconds(1000); - - ASSERT_EQ(NumTableFilesAtLevel(0), 0); - } while (ChangeOptions()); -} - -TEST(DBTest, IterEmpty) { - Iterator* iter = db_->NewIterator(ReadOptions()); - - iter->SeekToFirst(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->SeekToLast(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->Seek("foo"); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - delete iter; -} - -TEST(DBTest, IterSingle) { - ASSERT_OK(Put("a", "va")); - Iterator* iter = db_->NewIterator(ReadOptions()); - - iter->SeekToFirst(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - iter->SeekToFirst(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->SeekToLast(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - iter->SeekToLast(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->Seek(""); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->Seek("a"); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->Seek("b"); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - delete iter; -} - -TEST(DBTest, IterMulti) { - ASSERT_OK(Put("a", "va")); - ASSERT_OK(Put("b", "vb")); - ASSERT_OK(Put("c", "vc")); - Iterator* iter = db_->NewIterator(ReadOptions()); - - iter->SeekToFirst(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "b->vb"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "c->vc"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - iter->SeekToFirst(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->SeekToLast(); - ASSERT_EQ(IterStatus(iter), "c->vc"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "b->vb"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - iter->SeekToLast(); - ASSERT_EQ(IterStatus(iter), "c->vc"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->Seek(""); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Seek("a"); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Seek("ax"); - ASSERT_EQ(IterStatus(iter), "b->vb"); - iter->Seek("b"); - ASSERT_EQ(IterStatus(iter), "b->vb"); - iter->Seek("z"); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - // Switch from reverse to forward - iter->SeekToLast(); - iter->Prev(); - iter->Prev(); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "b->vb"); - - // Switch from forward to reverse - iter->SeekToFirst(); - iter->Next(); - iter->Next(); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "b->vb"); - - // Make sure iter stays at snapshot - ASSERT_OK(Put("a", "va2")); - ASSERT_OK(Put("a2", "va3")); - ASSERT_OK(Put("b", "vb2")); - ASSERT_OK(Put("c", "vc2")); - ASSERT_OK(Delete("b")); - iter->SeekToFirst(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "b->vb"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "c->vc"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - iter->SeekToLast(); - ASSERT_EQ(IterStatus(iter), "c->vc"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "b->vb"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - delete iter; -} - -TEST(DBTest, IterSmallAndLargeMix) { - ASSERT_OK(Put("a", "va")); - ASSERT_OK(Put("b", std::string(100000, 'b'))); - ASSERT_OK(Put("c", "vc")); - ASSERT_OK(Put("d", std::string(100000, 'd'))); - ASSERT_OK(Put("e", std::string(100000, 'e'))); - - Iterator* iter = db_->NewIterator(ReadOptions()); - - iter->SeekToFirst(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "b->" + std::string(100000, 'b')); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "c->vc"); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "d->" + std::string(100000, 'd')); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "e->" + std::string(100000, 'e')); - iter->Next(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - iter->SeekToLast(); - ASSERT_EQ(IterStatus(iter), "e->" + std::string(100000, 'e')); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "d->" + std::string(100000, 'd')); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "c->vc"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "b->" + std::string(100000, 'b')); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "a->va"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "(invalid)"); - - delete iter; -} - -TEST(DBTest, IterMultiWithDelete) { - do { - ASSERT_OK(Put("a", "va")); - ASSERT_OK(Put("b", "vb")); - ASSERT_OK(Put("c", "vc")); - ASSERT_OK(Delete("b")); - ASSERT_EQ("NOT_FOUND", Get("b")); - - Iterator* iter = db_->NewIterator(ReadOptions()); - iter->Seek("c"); - ASSERT_EQ(IterStatus(iter), "c->vc"); - iter->Prev(); - ASSERT_EQ(IterStatus(iter), "a->va"); - delete iter; - } while (ChangeOptions()); -} - -TEST(DBTest, Recover) { - do { - ASSERT_OK(Put("foo", "v1")); - ASSERT_OK(Put("baz", "v5")); - - Reopen(); - ASSERT_EQ("v1", Get("foo")); - - ASSERT_EQ("v1", Get("foo")); - ASSERT_EQ("v5", Get("baz")); - ASSERT_OK(Put("bar", "v2")); - ASSERT_OK(Put("foo", "v3")); - - Reopen(); - ASSERT_EQ("v3", Get("foo")); - ASSERT_OK(Put("foo", "v4")); - ASSERT_EQ("v4", Get("foo")); - ASSERT_EQ("v2", Get("bar")); - ASSERT_EQ("v5", Get("baz")); - } while (ChangeOptions()); -} - -TEST(DBTest, RecoveryWithEmptyLog) { - do { - ASSERT_OK(Put("foo", "v1")); - ASSERT_OK(Put("foo", "v2")); - Reopen(); - Reopen(); - ASSERT_OK(Put("foo", "v3")); - Reopen(); - ASSERT_EQ("v3", Get("foo")); - } while (ChangeOptions()); -} - -// Check that writes done during a memtable compaction are recovered -// if the database is shutdown during the memtable compaction. -TEST(DBTest, RecoverDuringMemtableCompaction) { - do { - Options options = CurrentOptions(); - options.env = env_; - options.write_buffer_size = 1000000; - Reopen(&options); - - // Trigger a long memtable compaction and reopen the database during it - ASSERT_OK(Put("foo", "v1")); // Goes to 1st log file - ASSERT_OK(Put("big1", std::string(10000000, 'x'))); // Fills memtable - ASSERT_OK(Put("big2", std::string(1000, 'y'))); // Triggers compaction - ASSERT_OK(Put("bar", "v2")); // Goes to new log file - - Reopen(&options); - ASSERT_EQ("v1", Get("foo")); - ASSERT_EQ("v2", Get("bar")); - ASSERT_EQ(std::string(10000000, 'x'), Get("big1")); - ASSERT_EQ(std::string(1000, 'y'), Get("big2")); - } while (ChangeOptions()); -} - -static std::string Key(int i) { - char buf[100]; - snprintf(buf, sizeof(buf), "key%06d", i); - return std::string(buf); -} - -TEST(DBTest, MinorCompactionsHappen) { - Options options = CurrentOptions(); - options.write_buffer_size = 10000; - Reopen(&options); - - const int N = 500; - - int starting_num_tables = TotalTableFiles(); - for (int i = 0; i < N; i++) { - ASSERT_OK(Put(Key(i), Key(i) + std::string(1000, 'v'))); - } - int ending_num_tables = TotalTableFiles(); - ASSERT_GT(ending_num_tables, starting_num_tables); - - for (int i = 0; i < N; i++) { - ASSERT_EQ(Key(i) + std::string(1000, 'v'), Get(Key(i))); - } - - Reopen(); - - for (int i = 0; i < N; i++) { - ASSERT_EQ(Key(i) + std::string(1000, 'v'), Get(Key(i))); - } -} - -TEST(DBTest, RecoverWithLargeLog) { - { - Options options = CurrentOptions(); - Reopen(&options); - ASSERT_OK(Put("big1", std::string(200000, '1'))); - ASSERT_OK(Put("big2", std::string(200000, '2'))); - ASSERT_OK(Put("small3", std::string(10, '3'))); - ASSERT_OK(Put("small4", std::string(10, '4'))); - ASSERT_EQ(NumTableFilesAtLevel(0), 0); - } - - // Make sure that if we re-open with a small write buffer size that - // we flush table files in the middle of a large log file. - Options options = CurrentOptions(); - options.write_buffer_size = 100000; - Reopen(&options); - ASSERT_EQ(NumTableFilesAtLevel(0), 3); - ASSERT_EQ(std::string(200000, '1'), Get("big1")); - ASSERT_EQ(std::string(200000, '2'), Get("big2")); - ASSERT_EQ(std::string(10, '3'), Get("small3")); - ASSERT_EQ(std::string(10, '4'), Get("small4")); - ASSERT_GT(NumTableFilesAtLevel(0), 1); -} - -TEST(DBTest, CompactionsGenerateMultipleFiles) { - Options options = CurrentOptions(); - options.write_buffer_size = 100000000; // Large write buffer - Reopen(&options); - - Random rnd(301); - - // Write 8MB (80 values, each 100K) - ASSERT_EQ(NumTableFilesAtLevel(0), 0); - std::vector values; - for (int i = 0; i < 80; i++) { - values.push_back(RandomString(&rnd, 100000)); - ASSERT_OK(Put(Key(i), values[i])); - } - - // Reopening moves updates to level-0 - Reopen(&options); - dbfull()->TEST_CompactRange(0, NULL, NULL); - - ASSERT_EQ(NumTableFilesAtLevel(0), 0); - ASSERT_GT(NumTableFilesAtLevel(1), 1); - for (int i = 0; i < 80; i++) { - ASSERT_EQ(Get(Key(i)), values[i]); - } -} - -TEST(DBTest, RepeatedWritesToSameKey) { - Options options = CurrentOptions(); - options.env = env_; - options.write_buffer_size = 100000; // Small write buffer - Reopen(&options); - - // We must have at most one file per level except for level-0, - // which may have up to kL0_StopWritesTrigger files. - const int kMaxFiles = config::kNumLevels + config::kL0_StopWritesTrigger; - - Random rnd(301); - std::string value = RandomString(&rnd, 2 * options.write_buffer_size); - for (int i = 0; i < 5 * kMaxFiles; i++) { - Put("key", value); - ASSERT_LE(TotalTableFiles(), kMaxFiles); - fprintf(stderr, "after %d: %d files\n", int(i+1), TotalTableFiles()); - } -} - -TEST(DBTest, SparseMerge) { - Options options = CurrentOptions(); - options.compression = kNoCompression; - Reopen(&options); - - FillLevels("A", "Z"); - - // Suppose there is: - // small amount of data with prefix A - // large amount of data with prefix B - // small amount of data with prefix C - // and that recent updates have made small changes to all three prefixes. - // Check that we do not do a compaction that merges all of B in one shot. - const std::string value(1000, 'x'); - Put("A", "va"); - // Write approximately 100MB of "B" values - for (int i = 0; i < 100000; i++) { - char key[100]; - snprintf(key, sizeof(key), "B%010d", i); - Put(key, value); - } - Put("C", "vc"); - dbfull()->TEST_CompactMemTable(); - dbfull()->TEST_CompactRange(0, NULL, NULL); - - // Make sparse update - Put("A", "va2"); - Put("B100", "bvalue2"); - Put("C", "vc2"); - dbfull()->TEST_CompactMemTable(); - - // Compactions should not cause us to create a situation where - // a file overlaps too much data at the next level. - ASSERT_LE(dbfull()->TEST_MaxNextLevelOverlappingBytes(), 20*1048576); - dbfull()->TEST_CompactRange(0, NULL, NULL); - ASSERT_LE(dbfull()->TEST_MaxNextLevelOverlappingBytes(), 20*1048576); - dbfull()->TEST_CompactRange(1, NULL, NULL); - ASSERT_LE(dbfull()->TEST_MaxNextLevelOverlappingBytes(), 20*1048576); -} - -static bool Between(uint64_t val, uint64_t low, uint64_t high) { - bool result = (val >= low) && (val <= high); - if (!result) { - fprintf(stderr, "Value %llu is not in range [%llu, %llu]\n", - (unsigned long long)(val), - (unsigned long long)(low), - (unsigned long long)(high)); - } - return result; -} - -TEST(DBTest, ApproximateSizes) { - do { - Options options = CurrentOptions(); - options.write_buffer_size = 100000000; // Large write buffer - options.compression = kNoCompression; - DestroyAndReopen(); - - ASSERT_TRUE(Between(Size("", "xyz"), 0, 0)); - Reopen(&options); - ASSERT_TRUE(Between(Size("", "xyz"), 0, 0)); - - // Write 8MB (80 values, each 100K) - ASSERT_EQ(NumTableFilesAtLevel(0), 0); - const int N = 80; - static const int S1 = 100000; - static const int S2 = 105000; // Allow some expansion from metadata - Random rnd(301); - for (int i = 0; i < N; i++) { - ASSERT_OK(Put(Key(i), RandomString(&rnd, S1))); - } - - // 0 because GetApproximateSizes() does not account for memtable space - ASSERT_TRUE(Between(Size("", Key(50)), 0, 0)); - - // Check sizes across recovery by reopening a few times - for (int run = 0; run < 3; run++) { - Reopen(&options); - - for (int compact_start = 0; compact_start < N; compact_start += 10) { - for (int i = 0; i < N; i += 10) { - ASSERT_TRUE(Between(Size("", Key(i)), S1*i, S2*i)); - ASSERT_TRUE(Between(Size("", Key(i)+".suffix"), S1*(i+1), S2*(i+1))); - ASSERT_TRUE(Between(Size(Key(i), Key(i+10)), S1*10, S2*10)); - } - ASSERT_TRUE(Between(Size("", Key(50)), S1*50, S2*50)); - ASSERT_TRUE(Between(Size("", Key(50)+".suffix"), S1*50, S2*50)); - - std::string cstart_str = Key(compact_start); - std::string cend_str = Key(compact_start + 9); - Slice cstart = cstart_str; - Slice cend = cend_str; - dbfull()->TEST_CompactRange(0, &cstart, &cend); - } - - ASSERT_EQ(NumTableFilesAtLevel(0), 0); - ASSERT_GT(NumTableFilesAtLevel(1), 0); - } - } while (ChangeOptions()); -} - -TEST(DBTest, ApproximateSizes_MixOfSmallAndLarge) { - do { - Options options = CurrentOptions(); - options.compression = kNoCompression; - Reopen(); - - Random rnd(301); - std::string big1 = RandomString(&rnd, 100000); - ASSERT_OK(Put(Key(0), RandomString(&rnd, 10000))); - ASSERT_OK(Put(Key(1), RandomString(&rnd, 10000))); - ASSERT_OK(Put(Key(2), big1)); - ASSERT_OK(Put(Key(3), RandomString(&rnd, 10000))); - ASSERT_OK(Put(Key(4), big1)); - ASSERT_OK(Put(Key(5), RandomString(&rnd, 10000))); - ASSERT_OK(Put(Key(6), RandomString(&rnd, 300000))); - ASSERT_OK(Put(Key(7), RandomString(&rnd, 10000))); - - // Check sizes across recovery by reopening a few times - for (int run = 0; run < 3; run++) { - Reopen(&options); - - ASSERT_TRUE(Between(Size("", Key(0)), 0, 0)); - ASSERT_TRUE(Between(Size("", Key(1)), 10000, 11000)); - ASSERT_TRUE(Between(Size("", Key(2)), 20000, 21000)); - ASSERT_TRUE(Between(Size("", Key(3)), 120000, 121000)); - ASSERT_TRUE(Between(Size("", Key(4)), 130000, 131000)); - ASSERT_TRUE(Between(Size("", Key(5)), 230000, 231000)); - ASSERT_TRUE(Between(Size("", Key(6)), 240000, 241000)); - ASSERT_TRUE(Between(Size("", Key(7)), 540000, 541000)); - ASSERT_TRUE(Between(Size("", Key(8)), 550000, 560000)); - - ASSERT_TRUE(Between(Size(Key(3), Key(5)), 110000, 111000)); - - dbfull()->TEST_CompactRange(0, NULL, NULL); - } - } while (ChangeOptions()); -} - -TEST(DBTest, IteratorPinsRef) { - Put("foo", "hello"); - - // Get iterator that will yield the current contents of the DB. - Iterator* iter = db_->NewIterator(ReadOptions()); - - // Write to force compactions - Put("foo", "newvalue1"); - for (int i = 0; i < 100; i++) { - ASSERT_OK(Put(Key(i), Key(i) + std::string(100000, 'v'))); // 100K values - } - Put("foo", "newvalue2"); - - iter->SeekToFirst(); - ASSERT_TRUE(iter->Valid()); - ASSERT_EQ("foo", iter->key().ToString()); - ASSERT_EQ("hello", iter->value().ToString()); - iter->Next(); - ASSERT_TRUE(!iter->Valid()); - delete iter; -} - -TEST(DBTest, Snapshot) { - do { - Put("foo", "v1"); - const Snapshot* s1 = db_->GetSnapshot(); - Put("foo", "v2"); - const Snapshot* s2 = db_->GetSnapshot(); - Put("foo", "v3"); - const Snapshot* s3 = db_->GetSnapshot(); - - Put("foo", "v4"); - ASSERT_EQ("v1", Get("foo", s1)); - ASSERT_EQ("v2", Get("foo", s2)); - ASSERT_EQ("v3", Get("foo", s3)); - ASSERT_EQ("v4", Get("foo")); - - db_->ReleaseSnapshot(s3); - ASSERT_EQ("v1", Get("foo", s1)); - ASSERT_EQ("v2", Get("foo", s2)); - ASSERT_EQ("v4", Get("foo")); - - db_->ReleaseSnapshot(s1); - ASSERT_EQ("v2", Get("foo", s2)); - ASSERT_EQ("v4", Get("foo")); - - db_->ReleaseSnapshot(s2); - ASSERT_EQ("v4", Get("foo")); - } while (ChangeOptions()); -} - -TEST(DBTest, HiddenValuesAreRemoved) { - do { - Random rnd(301); - FillLevels("a", "z"); - - std::string big = RandomString(&rnd, 50000); - Put("foo", big); - Put("pastfoo", "v"); - const Snapshot* snapshot = db_->GetSnapshot(); - Put("foo", "tiny"); - Put("pastfoo2", "v2"); // Advance sequence number one more - - ASSERT_OK(dbfull()->TEST_CompactMemTable()); - ASSERT_GT(NumTableFilesAtLevel(0), 0); - - ASSERT_EQ(big, Get("foo", snapshot)); - ASSERT_TRUE(Between(Size("", "pastfoo"), 50000, 60000)); - db_->ReleaseSnapshot(snapshot); - ASSERT_EQ(AllEntriesFor("foo"), "[ tiny, " + big + " ]"); - Slice x("x"); - dbfull()->TEST_CompactRange(0, NULL, &x); - ASSERT_EQ(AllEntriesFor("foo"), "[ tiny ]"); - ASSERT_EQ(NumTableFilesAtLevel(0), 0); - ASSERT_GE(NumTableFilesAtLevel(1), 1); - dbfull()->TEST_CompactRange(1, NULL, &x); - ASSERT_EQ(AllEntriesFor("foo"), "[ tiny ]"); - - ASSERT_TRUE(Between(Size("", "pastfoo"), 0, 1000)); - } while (ChangeOptions()); -} - -TEST(DBTest, DeletionMarkers1) { - Put("foo", "v1"); - ASSERT_OK(dbfull()->TEST_CompactMemTable()); - const int last = config::kMaxMemCompactLevel; - ASSERT_EQ(NumTableFilesAtLevel(last), 1); // foo => v1 is now in last level - - // Place a table at level last-1 to prevent merging with preceding mutation - Put("a", "begin"); - Put("z", "end"); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ(NumTableFilesAtLevel(last), 1); - ASSERT_EQ(NumTableFilesAtLevel(last-1), 1); - - Delete("foo"); - Put("foo", "v2"); - ASSERT_EQ(AllEntriesFor("foo"), "[ v2, DEL, v1 ]"); - ASSERT_OK(dbfull()->TEST_CompactMemTable()); // Moves to level last-2 - ASSERT_EQ(AllEntriesFor("foo"), "[ v2, DEL, v1 ]"); - Slice z("z"); - dbfull()->TEST_CompactRange(last-2, NULL, &z); - // DEL eliminated, but v1 remains because we aren't compacting that level - // (DEL can be eliminated because v2 hides v1). - ASSERT_EQ(AllEntriesFor("foo"), "[ v2, v1 ]"); - dbfull()->TEST_CompactRange(last-1, NULL, NULL); - // Merging last-1 w/ last, so we are the base level for "foo", so - // DEL is removed. (as is v1). - ASSERT_EQ(AllEntriesFor("foo"), "[ v2 ]"); -} - -TEST(DBTest, DeletionMarkers2) { - Put("foo", "v1"); - ASSERT_OK(dbfull()->TEST_CompactMemTable()); - const int last = config::kMaxMemCompactLevel; - ASSERT_EQ(NumTableFilesAtLevel(last), 1); // foo => v1 is now in last level - - // Place a table at level last-1 to prevent merging with preceding mutation - Put("a", "begin"); - Put("z", "end"); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ(NumTableFilesAtLevel(last), 1); - ASSERT_EQ(NumTableFilesAtLevel(last-1), 1); - - Delete("foo"); - ASSERT_EQ(AllEntriesFor("foo"), "[ DEL, v1 ]"); - ASSERT_OK(dbfull()->TEST_CompactMemTable()); // Moves to level last-2 - ASSERT_EQ(AllEntriesFor("foo"), "[ DEL, v1 ]"); - dbfull()->TEST_CompactRange(last-2, NULL, NULL); - // DEL kept: "last" file overlaps - ASSERT_EQ(AllEntriesFor("foo"), "[ DEL, v1 ]"); - dbfull()->TEST_CompactRange(last-1, NULL, NULL); - // Merging last-1 w/ last, so we are the base level for "foo", so - // DEL is removed. (as is v1). - ASSERT_EQ(AllEntriesFor("foo"), "[ ]"); -} - -TEST(DBTest, OverlapInLevel0) { - do { - ASSERT_EQ(config::kMaxMemCompactLevel, 2) << "Fix test to match config"; - - // Fill levels 1 and 2 to disable the pushing of new memtables to levels > 0. - ASSERT_OK(Put("100", "v100")); - ASSERT_OK(Put("999", "v999")); - dbfull()->TEST_CompactMemTable(); - ASSERT_OK(Delete("100")); - ASSERT_OK(Delete("999")); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("0,1,1", FilesPerLevel()); - - // Make files spanning the following ranges in level-0: - // files[0] 200 .. 900 - // files[1] 300 .. 500 - // Note that files are sorted by smallest key. - ASSERT_OK(Put("300", "v300")); - ASSERT_OK(Put("500", "v500")); - dbfull()->TEST_CompactMemTable(); - ASSERT_OK(Put("200", "v200")); - ASSERT_OK(Put("600", "v600")); - ASSERT_OK(Put("900", "v900")); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("2,1,1", FilesPerLevel()); - - // Compact away the placeholder files we created initially - dbfull()->TEST_CompactRange(1, NULL, NULL); - dbfull()->TEST_CompactRange(2, NULL, NULL); - ASSERT_EQ("2", FilesPerLevel()); - - // Do a memtable compaction. Before bug-fix, the compaction would - // not detect the overlap with level-0 files and would incorrectly place - // the deletion in a deeper level. - ASSERT_OK(Delete("600")); - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("3", FilesPerLevel()); - ASSERT_EQ("NOT_FOUND", Get("600")); - } while (ChangeOptions()); -} - -TEST(DBTest, L0_CompactionBug_Issue44_a) { - Reopen(); - ASSERT_OK(Put("b", "v")); - Reopen(); - ASSERT_OK(Delete("b")); - ASSERT_OK(Delete("a")); - Reopen(); - ASSERT_OK(Delete("a")); - Reopen(); - ASSERT_OK(Put("a", "v")); - Reopen(); - Reopen(); - ASSERT_EQ("(a->v)", Contents()); - DelayMilliseconds(1000); // Wait for compaction to finish - ASSERT_EQ("(a->v)", Contents()); -} - -TEST(DBTest, L0_CompactionBug_Issue44_b) { - Reopen(); - Put("",""); - Reopen(); - Delete("e"); - Put("",""); - Reopen(); - Put("c", "cv"); - Reopen(); - Put("",""); - Reopen(); - Put("",""); - DelayMilliseconds(1000); // Wait for compaction to finish - Reopen(); - Put("d","dv"); - Reopen(); - Put("",""); - Reopen(); - Delete("d"); - Delete("b"); - Reopen(); - ASSERT_EQ("(->)(c->cv)", Contents()); - DelayMilliseconds(1000); // Wait for compaction to finish - ASSERT_EQ("(->)(c->cv)", Contents()); -} - -TEST(DBTest, ComparatorCheck) { - class NewComparator : public Comparator { - public: - virtual const char* Name() const { return "leveldb.NewComparator"; } - virtual int Compare(const Slice& a, const Slice& b) const { - return BytewiseComparator()->Compare(a, b); - } - virtual void FindShortestSeparator(std::string* s, const Slice& l) const { - BytewiseComparator()->FindShortestSeparator(s, l); - } - virtual void FindShortSuccessor(std::string* key) const { - BytewiseComparator()->FindShortSuccessor(key); - } - }; - NewComparator cmp; - Options new_options = CurrentOptions(); - new_options.comparator = &cmp; - Status s = TryReopen(&new_options); - ASSERT_TRUE(!s.ok()); - ASSERT_TRUE(s.ToString().find("comparator") != std::string::npos) - << s.ToString(); -} - -TEST(DBTest, CustomComparator) { - class NumberComparator : public Comparator { - public: - virtual const char* Name() const { return "test.NumberComparator"; } - virtual int Compare(const Slice& a, const Slice& b) const { - return ToNumber(a) - ToNumber(b); - } - virtual void FindShortestSeparator(std::string* s, const Slice& l) const { - ToNumber(*s); // Check format - ToNumber(l); // Check format - } - virtual void FindShortSuccessor(std::string* key) const { - ToNumber(*key); // Check format - } - private: - static int ToNumber(const Slice& x) { - // Check that there are no extra characters. - ASSERT_TRUE(x.size() >= 2 && x[0] == '[' && x[x.size()-1] == ']') - << EscapeString(x); - int val; - char ignored; - ASSERT_TRUE(sscanf(x.ToString().c_str(), "[%i]%c", &val, &ignored) == 1) - << EscapeString(x); - return val; - } - }; - NumberComparator cmp; - Options new_options = CurrentOptions(); - new_options.create_if_missing = true; - new_options.comparator = &cmp; - new_options.filter_policy = NULL; // Cannot use bloom filters - new_options.write_buffer_size = 1000; // Compact more often - DestroyAndReopen(&new_options); - ASSERT_OK(Put("[10]", "ten")); - ASSERT_OK(Put("[0x14]", "twenty")); - for (int i = 0; i < 2; i++) { - ASSERT_EQ("ten", Get("[10]")); - ASSERT_EQ("ten", Get("[0xa]")); - ASSERT_EQ("twenty", Get("[20]")); - ASSERT_EQ("twenty", Get("[0x14]")); - ASSERT_EQ("NOT_FOUND", Get("[15]")); - ASSERT_EQ("NOT_FOUND", Get("[0xf]")); - Compact("[0]", "[9999]"); - } - - for (int run = 0; run < 2; run++) { - for (int i = 0; i < 1000; i++) { - char buf[100]; - snprintf(buf, sizeof(buf), "[%d]", i*10); - ASSERT_OK(Put(buf, buf)); - } - Compact("[0]", "[1000000]"); - } -} - -TEST(DBTest, ManualCompaction) { - ASSERT_EQ(config::kMaxMemCompactLevel, 2) - << "Need to update this test to match kMaxMemCompactLevel"; - - MakeTables(3, "p", "q"); - ASSERT_EQ("1,1,1", FilesPerLevel()); - - // Compaction range falls before files - Compact("", "c"); - ASSERT_EQ("1,1,1", FilesPerLevel()); - - // Compaction range falls after files - Compact("r", "z"); - ASSERT_EQ("1,1,1", FilesPerLevel()); - - // Compaction range overlaps files - Compact("p1", "p9"); - ASSERT_EQ("0,0,1", FilesPerLevel()); - - // Populate a different range - MakeTables(3, "c", "e"); - ASSERT_EQ("1,1,2", FilesPerLevel()); - - // Compact just the new range - Compact("b", "f"); - ASSERT_EQ("0,0,2", FilesPerLevel()); - - // Compact all - MakeTables(1, "a", "z"); - ASSERT_EQ("0,1,2", FilesPerLevel()); - db_->CompactRange(NULL, NULL); - ASSERT_EQ("0,0,1", FilesPerLevel()); -} - -TEST(DBTest, DBOpen_Options) { - std::string dbname = test::TmpDir() + "/db_options_test"; - DestroyDB(dbname, Options()); - - // Does not exist, and create_if_missing == false: error - DB* db = NULL; - Options opts; - opts.create_if_missing = false; - Status s = DB::Open(opts, dbname, &db); - ASSERT_TRUE(strstr(s.ToString().c_str(), "does not exist") != NULL); - ASSERT_TRUE(db == NULL); - - // Does not exist, and create_if_missing == true: OK - opts.create_if_missing = true; - s = DB::Open(opts, dbname, &db); - ASSERT_OK(s); - ASSERT_TRUE(db != NULL); - - delete db; - db = NULL; - - // Does exist, and error_if_exists == true: error - opts.create_if_missing = false; - opts.error_if_exists = true; - s = DB::Open(opts, dbname, &db); - ASSERT_TRUE(strstr(s.ToString().c_str(), "exists") != NULL); - ASSERT_TRUE(db == NULL); - - // Does exist, and error_if_exists == false: OK - opts.create_if_missing = true; - opts.error_if_exists = false; - s = DB::Open(opts, dbname, &db); - ASSERT_OK(s); - ASSERT_TRUE(db != NULL); - - delete db; - db = NULL; -} - -TEST(DBTest, Locking) { - DB* db2 = NULL; - Status s = DB::Open(CurrentOptions(), dbname_, &db2); - ASSERT_TRUE(!s.ok()) << "Locking did not prevent re-opening db"; -} - -// Check that number of files does not grow when we are out of space -TEST(DBTest, NoSpace) { - Options options = CurrentOptions(); - options.env = env_; - Reopen(&options); - - ASSERT_OK(Put("foo", "v1")); - ASSERT_EQ("v1", Get("foo")); - Compact("a", "z"); - const int num_files = CountFiles(); - env_->no_space_.Release_Store(env_); // Force out-of-space errors - for (int i = 0; i < 10; i++) { - for (int level = 0; level < config::kNumLevels-1; level++) { - dbfull()->TEST_CompactRange(level, NULL, NULL); - } - } - env_->no_space_.Release_Store(NULL); - ASSERT_LT(CountFiles(), num_files + 3); -} - -TEST(DBTest, NonWritableFileSystem) { - Options options = CurrentOptions(); - options.write_buffer_size = 1000; - options.env = env_; - Reopen(&options); - ASSERT_OK(Put("foo", "v1")); - env_->non_writable_.Release_Store(env_); // Force errors for new files - std::string big(100000, 'x'); - int errors = 0; - for (int i = 0; i < 20; i++) { - fprintf(stderr, "iter %d; errors %d\n", i, errors); - if (!Put("foo", big).ok()) { - errors++; - DelayMilliseconds(100); - } - } - ASSERT_GT(errors, 0); - env_->non_writable_.Release_Store(NULL); -} - -TEST(DBTest, WriteSyncError) { - // Check that log sync errors cause the DB to disallow future writes. - - // (a) Cause log sync calls to fail - Options options = CurrentOptions(); - options.env = env_; - Reopen(&options); - env_->data_sync_error_.Release_Store(env_); - - // (b) Normal write should succeed - WriteOptions w; - ASSERT_OK(db_->Put(w, "k1", "v1")); - ASSERT_EQ("v1", Get("k1")); - - // (c) Do a sync write; should fail - w.sync = true; - ASSERT_TRUE(!db_->Put(w, "k2", "v2").ok()); - ASSERT_EQ("v1", Get("k1")); - ASSERT_EQ("NOT_FOUND", Get("k2")); - - // (d) make sync behave normally - env_->data_sync_error_.Release_Store(NULL); - - // (e) Do a non-sync write; should fail - w.sync = false; - ASSERT_TRUE(!db_->Put(w, "k3", "v3").ok()); - ASSERT_EQ("v1", Get("k1")); - ASSERT_EQ("NOT_FOUND", Get("k2")); - ASSERT_EQ("NOT_FOUND", Get("k3")); -} - -TEST(DBTest, ManifestWriteError) { - // Test for the following problem: - // (a) Compaction produces file F - // (b) Log record containing F is written to MANIFEST file, but Sync() fails - // (c) GC deletes F - // (d) After reopening DB, reads fail since deleted F is named in log record - - // We iterate twice. In the second iteration, everything is the - // same except the log record never makes it to the MANIFEST file. - for (int iter = 0; iter < 2; iter++) { - port::AtomicPointer* error_type = (iter == 0) - ? &env_->manifest_sync_error_ - : &env_->manifest_write_error_; - - // Insert foo=>bar mapping - Options options = CurrentOptions(); - options.env = env_; - options.create_if_missing = true; - options.error_if_exists = false; - DestroyAndReopen(&options); - ASSERT_OK(Put("foo", "bar")); - ASSERT_EQ("bar", Get("foo")); - - // Memtable compaction (will succeed) - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("bar", Get("foo")); - const int last = config::kMaxMemCompactLevel; - ASSERT_EQ(NumTableFilesAtLevel(last), 1); // foo=>bar is now in last level - - // Merging compaction (will fail) - error_type->Release_Store(env_); - dbfull()->TEST_CompactRange(last, NULL, NULL); // Should fail - ASSERT_EQ("bar", Get("foo")); - - // Recovery: should not lose data - error_type->Release_Store(NULL); - Reopen(&options); - ASSERT_EQ("bar", Get("foo")); - } -} - -TEST(DBTest, MissingSSTFile) { - ASSERT_OK(Put("foo", "bar")); - ASSERT_EQ("bar", Get("foo")); - - // Dump the memtable to disk. - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("bar", Get("foo")); - - Close(); - ASSERT_TRUE(DeleteAnSSTFile()); - Options options = CurrentOptions(); - options.paranoid_checks = true; - Status s = TryReopen(&options); - ASSERT_TRUE(!s.ok()); - ASSERT_TRUE(s.ToString().find("issing") != std::string::npos) - << s.ToString(); -} - -TEST(DBTest, StillReadSST) { - ASSERT_OK(Put("foo", "bar")); - ASSERT_EQ("bar", Get("foo")); - - // Dump the memtable to disk. - dbfull()->TEST_CompactMemTable(); - ASSERT_EQ("bar", Get("foo")); - Close(); - ASSERT_GT(RenameLDBToSST(), 0); - Options options = CurrentOptions(); - options.paranoid_checks = true; - Status s = TryReopen(&options); - ASSERT_TRUE(s.ok()); - ASSERT_EQ("bar", Get("foo")); -} - -TEST(DBTest, FilesDeletedAfterCompaction) { - ASSERT_OK(Put("foo", "v2")); - Compact("a", "z"); - const int num_files = CountFiles(); - for (int i = 0; i < 10; i++) { - ASSERT_OK(Put("foo", "v2")); - Compact("a", "z"); - } - ASSERT_EQ(CountFiles(), num_files); -} - -TEST(DBTest, BloomFilter) { - env_->count_random_reads_ = true; - Options options = CurrentOptions(); - options.env = env_; - options.block_cache = NewLRUCache(0); // Prevent cache hits - options.filter_policy = NewBloomFilterPolicy(10); - Reopen(&options); - - // Populate multiple layers - const int N = 10000; - for (int i = 0; i < N; i++) { - ASSERT_OK(Put(Key(i), Key(i))); - } - Compact("a", "z"); - for (int i = 0; i < N; i += 100) { - ASSERT_OK(Put(Key(i), Key(i))); - } - dbfull()->TEST_CompactMemTable(); - - // Prevent auto compactions triggered by seeks - env_->delay_data_sync_.Release_Store(env_); - - // Lookup present keys. Should rarely read from small sstable. - env_->random_read_counter_.Reset(); - for (int i = 0; i < N; i++) { - ASSERT_EQ(Key(i), Get(Key(i))); - } - int reads = env_->random_read_counter_.Read(); - fprintf(stderr, "%d present => %d reads\n", N, reads); - ASSERT_GE(reads, N); - ASSERT_LE(reads, N + 2*N/100); - - // Lookup present keys. Should rarely read from either sstable. - env_->random_read_counter_.Reset(); - for (int i = 0; i < N; i++) { - ASSERT_EQ("NOT_FOUND", Get(Key(i) + ".missing")); - } - reads = env_->random_read_counter_.Read(); - fprintf(stderr, "%d missing => %d reads\n", N, reads); - ASSERT_LE(reads, 3*N/100); - - env_->delay_data_sync_.Release_Store(NULL); - Close(); - delete options.block_cache; - delete options.filter_policy; -} - -// Multi-threaded test: -namespace { - -static const int kNumThreads = 4; -static const int kTestSeconds = 10; -static const int kNumKeys = 1000; - -struct MTState { - DBTest* test; - port::AtomicPointer stop; - port::AtomicPointer counter[kNumThreads]; - port::AtomicPointer thread_done[kNumThreads]; -}; - -struct MTThread { - MTState* state; - int id; -}; - -static void MTThreadBody(void* arg) { - MTThread* t = reinterpret_cast(arg); - int id = t->id; - DB* db = t->state->test->db_; - uintptr_t counter = 0; - fprintf(stderr, "... starting thread %d\n", id); - Random rnd(1000 + id); - std::string value; - char valbuf[1500]; - while (t->state->stop.Acquire_Load() == NULL) { - t->state->counter[id].Release_Store(reinterpret_cast(counter)); - - int key = rnd.Uniform(kNumKeys); - char keybuf[20]; - snprintf(keybuf, sizeof(keybuf), "%016d", key); - - if (rnd.OneIn(2)) { - // Write values of the form . - // We add some padding for force compactions. - snprintf(valbuf, sizeof(valbuf), "%d.%d.%-1000d", - key, id, static_cast(counter)); - ASSERT_OK(db->Put(WriteOptions(), Slice(keybuf), Slice(valbuf))); - } else { - // Read a value and verify that it matches the pattern written above. - Status s = db->Get(ReadOptions(), Slice(keybuf), &value); - if (s.IsNotFound()) { - // Key has not yet been written - } else { - // Check that the writer thread counter is >= the counter in the value - ASSERT_OK(s); - int k, w, c; - ASSERT_EQ(3, sscanf(value.c_str(), "%d.%d.%d", &k, &w, &c)) << value; - ASSERT_EQ(k, key); - ASSERT_GE(w, 0); - ASSERT_LT(w, kNumThreads); - ASSERT_LE(static_cast(c), reinterpret_cast( - t->state->counter[w].Acquire_Load())); - } - } - counter++; - } - t->state->thread_done[id].Release_Store(t); - fprintf(stderr, "... stopping thread %d after %d ops\n", id, int(counter)); -} - -} // namespace - -TEST(DBTest, MultiThreaded) { - do { - // Initialize state - MTState mt; - mt.test = this; - mt.stop.Release_Store(0); - for (int id = 0; id < kNumThreads; id++) { - mt.counter[id].Release_Store(0); - mt.thread_done[id].Release_Store(0); - } - - // Start threads - MTThread thread[kNumThreads]; - for (int id = 0; id < kNumThreads; id++) { - thread[id].state = &mt; - thread[id].id = id; - env_->StartThread(MTThreadBody, &thread[id]); - } - - // Let them run for a while - DelayMilliseconds(kTestSeconds * 1000); - - // Stop the threads and wait for them to finish - mt.stop.Release_Store(&mt); - for (int id = 0; id < kNumThreads; id++) { - while (mt.thread_done[id].Acquire_Load() == NULL) { - DelayMilliseconds(100); - } - } - } while (ChangeOptions()); -} - -namespace { -typedef std::map KVMap; -} - -class ModelDB: public DB { - public: - class ModelSnapshot : public Snapshot { - public: - KVMap map_; - }; - - explicit ModelDB(const Options& options): options_(options) { } - ~ModelDB() { } - virtual Status Put(const WriteOptions& o, const Slice& k, const Slice& v) { - return DB::Put(o, k, v); - } - virtual Status Delete(const WriteOptions& o, const Slice& key) { - return DB::Delete(o, key); - } - virtual Status Get(const ReadOptions& options, - const Slice& key, std::string* value) { - assert(false); // Not implemented - return Status::NotFound(key); - } - virtual Iterator* NewIterator(const ReadOptions& options) { - if (options.snapshot == NULL) { - KVMap* saved = new KVMap; - *saved = map_; - return new ModelIter(saved, true); - } else { - const KVMap* snapshot_state = - &(reinterpret_cast(options.snapshot)->map_); - return new ModelIter(snapshot_state, false); - } - } - virtual const Snapshot* GetSnapshot() { - ModelSnapshot* snapshot = new ModelSnapshot; - snapshot->map_ = map_; - return snapshot; - } - - virtual void ReleaseSnapshot(const Snapshot* snapshot) { - delete reinterpret_cast(snapshot); - } - virtual Status Write(const WriteOptions& options, WriteBatch* batch) { - class Handler : public WriteBatch::Handler { - public: - KVMap* map_; - virtual void Put(const Slice& key, const Slice& value) { - (*map_)[key.ToString()] = value.ToString(); - } - virtual void Delete(const Slice& key) { - map_->erase(key.ToString()); - } - }; - Handler handler; - handler.map_ = &map_; - return batch->Iterate(&handler); - } - - virtual bool GetProperty(const Slice& property, std::string* value) { - return false; - } - virtual void GetApproximateSizes(const Range* r, int n, uint64_t* sizes) { - for (int i = 0; i < n; i++) { - sizes[i] = 0; - } - } - virtual void CompactRange(const Slice* start, const Slice* end) { - } - - private: - class ModelIter: public Iterator { - public: - ModelIter(const KVMap* map, bool owned) - : map_(map), owned_(owned), iter_(map_->end()) { - } - ~ModelIter() { - if (owned_) delete map_; - } - virtual bool Valid() const { return iter_ != map_->end(); } - virtual void SeekToFirst() { iter_ = map_->begin(); } - virtual void SeekToLast() { - if (map_->empty()) { - iter_ = map_->end(); - } else { - iter_ = map_->find(map_->rbegin()->first); - } - } - virtual void Seek(const Slice& k) { - iter_ = map_->lower_bound(k.ToString()); - } - virtual void Next() { ++iter_; } - virtual void Prev() { --iter_; } - virtual Slice key() const { return iter_->first; } - virtual Slice value() const { return iter_->second; } - virtual Status status() const { return Status::OK(); } - private: - const KVMap* const map_; - const bool owned_; // Do we own map_ - KVMap::const_iterator iter_; - }; - const Options options_; - KVMap map_; -}; - -static std::string RandomKey(Random* rnd) { - int len = (rnd->OneIn(3) - ? 1 // Short sometimes to encourage collisions - : (rnd->OneIn(100) ? rnd->Skewed(10) : rnd->Uniform(10))); - return test::RandomKey(rnd, len); -} - -static bool CompareIterators(int step, - DB* model, - DB* db, - const Snapshot* model_snap, - const Snapshot* db_snap) { - ReadOptions options; - options.snapshot = model_snap; - Iterator* miter = model->NewIterator(options); - options.snapshot = db_snap; - Iterator* dbiter = db->NewIterator(options); - bool ok = true; - int count = 0; - for (miter->SeekToFirst(), dbiter->SeekToFirst(); - ok && miter->Valid() && dbiter->Valid(); - miter->Next(), dbiter->Next()) { - count++; - if (miter->key().compare(dbiter->key()) != 0) { - fprintf(stderr, "step %d: Key mismatch: '%s' vs. '%s'\n", - step, - EscapeString(miter->key()).c_str(), - EscapeString(dbiter->key()).c_str()); - ok = false; - break; - } - - if (miter->value().compare(dbiter->value()) != 0) { - fprintf(stderr, "step %d: Value mismatch for key '%s': '%s' vs. '%s'\n", - step, - EscapeString(miter->key()).c_str(), - EscapeString(miter->value()).c_str(), - EscapeString(miter->value()).c_str()); - ok = false; - } - } - - if (ok) { - if (miter->Valid() != dbiter->Valid()) { - fprintf(stderr, "step %d: Mismatch at end of iterators: %d vs. %d\n", - step, miter->Valid(), dbiter->Valid()); - ok = false; - } - } - fprintf(stderr, "%d entries compared: ok=%d\n", count, ok); - delete miter; - delete dbiter; - return ok; -} - -TEST(DBTest, Randomized) { - Random rnd(test::RandomSeed()); - do { - ModelDB model(CurrentOptions()); - const int N = 10000; - const Snapshot* model_snap = NULL; - const Snapshot* db_snap = NULL; - std::string k, v; - for (int step = 0; step < N; step++) { - if (step % 100 == 0) { - fprintf(stderr, "Step %d of %d\n", step, N); - } - // TODO(sanjay): Test Get() works - int p = rnd.Uniform(100); - if (p < 45) { // Put - k = RandomKey(&rnd); - v = RandomString(&rnd, - rnd.OneIn(20) - ? 100 + rnd.Uniform(100) - : rnd.Uniform(8)); - ASSERT_OK(model.Put(WriteOptions(), k, v)); - ASSERT_OK(db_->Put(WriteOptions(), k, v)); - - } else if (p < 90) { // Delete - k = RandomKey(&rnd); - ASSERT_OK(model.Delete(WriteOptions(), k)); - ASSERT_OK(db_->Delete(WriteOptions(), k)); - - - } else { // Multi-element batch - WriteBatch b; - const int num = rnd.Uniform(8); - for (int i = 0; i < num; i++) { - if (i == 0 || !rnd.OneIn(10)) { - k = RandomKey(&rnd); - } else { - // Periodically re-use the same key from the previous iter, so - // we have multiple entries in the write batch for the same key - } - if (rnd.OneIn(2)) { - v = RandomString(&rnd, rnd.Uniform(10)); - b.Put(k, v); - } else { - b.Delete(k); - } - } - ASSERT_OK(model.Write(WriteOptions(), &b)); - ASSERT_OK(db_->Write(WriteOptions(), &b)); - } - - if ((step % 100) == 0) { - ASSERT_TRUE(CompareIterators(step, &model, db_, NULL, NULL)); - ASSERT_TRUE(CompareIterators(step, &model, db_, model_snap, db_snap)); - // Save a snapshot from each DB this time that we'll use next - // time we compare things, to make sure the current state is - // preserved with the snapshot - if (model_snap != NULL) model.ReleaseSnapshot(model_snap); - if (db_snap != NULL) db_->ReleaseSnapshot(db_snap); - - Reopen(); - ASSERT_TRUE(CompareIterators(step, &model, db_, NULL, NULL)); - - model_snap = model.GetSnapshot(); - db_snap = db_->GetSnapshot(); - } - } - if (model_snap != NULL) model.ReleaseSnapshot(model_snap); - if (db_snap != NULL) db_->ReleaseSnapshot(db_snap); - } while (ChangeOptions()); -} - -std::string MakeKey(unsigned int num) { - char buf[30]; - snprintf(buf, sizeof(buf), "%016u", num); - return std::string(buf); -} - -void BM_LogAndApply(int iters, int num_base_files) { - std::string dbname = test::TmpDir() + "/leveldb_test_benchmark"; - DestroyDB(dbname, Options()); - - DB* db = NULL; - Options opts; - opts.create_if_missing = true; - Status s = DB::Open(opts, dbname, &db); - ASSERT_OK(s); - ASSERT_TRUE(db != NULL); - - delete db; - db = NULL; - - Env* env = Env::Default(); - - port::Mutex mu; - MutexLock l(&mu); - - InternalKeyComparator cmp(BytewiseComparator()); - Options options; - VersionSet vset(dbname, &options, NULL, &cmp); - ASSERT_OK(vset.Recover()); - VersionEdit vbase; - uint64_t fnum = 1; - for (int i = 0; i < num_base_files; i++) { - InternalKey start(MakeKey(2*fnum), 1, kTypeValue); - InternalKey limit(MakeKey(2*fnum+1), 1, kTypeDeletion); - vbase.AddFile(2, fnum++, 1 /* file size */, start, limit); - } - ASSERT_OK(vset.LogAndApply(&vbase, &mu)); - - uint64_t start_micros = env->NowMicros(); - - for (int i = 0; i < iters; i++) { - VersionEdit vedit; - vedit.DeleteFile(2, fnum); - InternalKey start(MakeKey(2*fnum), 1, kTypeValue); - InternalKey limit(MakeKey(2*fnum+1), 1, kTypeDeletion); - vedit.AddFile(2, fnum++, 1 /* file size */, start, limit); - vset.LogAndApply(&vedit, &mu); - } - uint64_t stop_micros = env->NowMicros(); - unsigned int us = stop_micros - start_micros; - char buf[16]; - snprintf(buf, sizeof(buf), "%d", num_base_files); - fprintf(stderr, - "BM_LogAndApply/%-6s %8d iters : %9u us (%7.0f us / iter)\n", - buf, iters, us, ((float)us) / iters); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - if (argc > 1 && std::string(argv[1]) == "--benchmark") { - leveldb::BM_LogAndApply(1000, 1); - leveldb::BM_LogAndApply(1000, 100); - leveldb::BM_LogAndApply(1000, 10000); - leveldb::BM_LogAndApply(100, 100000); - return 0; - } - - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/dbformat.cc b/leveldb-1.18/db/dbformat.cc deleted file mode 100644 index 20a7ca4..0000000 --- a/leveldb-1.18/db/dbformat.cc +++ /dev/null @@ -1,140 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include "db/dbformat.h" -#include "port/port.h" -#include "util/coding.h" - -namespace leveldb { - -static uint64_t PackSequenceAndType(uint64_t seq, ValueType t) { - assert(seq <= kMaxSequenceNumber); - assert(t <= kValueTypeForSeek); - return (seq << 8) | t; -} - -void AppendInternalKey(std::string* result, const ParsedInternalKey& key) { - result->append(key.user_key.data(), key.user_key.size()); - PutFixed64(result, PackSequenceAndType(key.sequence, key.type)); -} - -std::string ParsedInternalKey::DebugString() const { - char buf[50]; - snprintf(buf, sizeof(buf), "' @ %llu : %d", - (unsigned long long) sequence, - int(type)); - std::string result = "'"; - result += EscapeString(user_key.ToString()); - result += buf; - return result; -} - -std::string InternalKey::DebugString() const { - std::string result; - ParsedInternalKey parsed; - if (ParseInternalKey(rep_, &parsed)) { - result = parsed.DebugString(); - } else { - result = "(bad)"; - result.append(EscapeString(rep_)); - } - return result; -} - -const char* InternalKeyComparator::Name() const { - return "leveldb.InternalKeyComparator"; -} - -int InternalKeyComparator::Compare(const Slice& akey, const Slice& bkey) const { - // Order by: - // increasing user key (according to user-supplied comparator) - // decreasing sequence number - // decreasing type (though sequence# should be enough to disambiguate) - int r = user_comparator_->Compare(ExtractUserKey(akey), ExtractUserKey(bkey)); - if (r == 0) { - const uint64_t anum = DecodeFixed64(akey.data() + akey.size() - 8); - const uint64_t bnum = DecodeFixed64(bkey.data() + bkey.size() - 8); - if (anum > bnum) { - r = -1; - } else if (anum < bnum) { - r = +1; - } - } - return r; -} - -void InternalKeyComparator::FindShortestSeparator( - std::string* start, - const Slice& limit) const { - // Attempt to shorten the user portion of the key - Slice user_start = ExtractUserKey(*start); - Slice user_limit = ExtractUserKey(limit); - std::string tmp(user_start.data(), user_start.size()); - user_comparator_->FindShortestSeparator(&tmp, user_limit); - if (tmp.size() < user_start.size() && - user_comparator_->Compare(user_start, tmp) < 0) { - // User key has become shorter physically, but larger logically. - // Tack on the earliest possible number to the shortened user key. - PutFixed64(&tmp, PackSequenceAndType(kMaxSequenceNumber,kValueTypeForSeek)); - assert(this->Compare(*start, tmp) < 0); - assert(this->Compare(tmp, limit) < 0); - start->swap(tmp); - } -} - -void InternalKeyComparator::FindShortSuccessor(std::string* key) const { - Slice user_key = ExtractUserKey(*key); - std::string tmp(user_key.data(), user_key.size()); - user_comparator_->FindShortSuccessor(&tmp); - if (tmp.size() < user_key.size() && - user_comparator_->Compare(user_key, tmp) < 0) { - // User key has become shorter physically, but larger logically. - // Tack on the earliest possible number to the shortened user key. - PutFixed64(&tmp, PackSequenceAndType(kMaxSequenceNumber,kValueTypeForSeek)); - assert(this->Compare(*key, tmp) < 0); - key->swap(tmp); - } -} - -const char* InternalFilterPolicy::Name() const { - return user_policy_->Name(); -} - -void InternalFilterPolicy::CreateFilter(const Slice* keys, int n, - std::string* dst) const { - // We rely on the fact that the code in table.cc does not mind us - // adjusting keys[]. - Slice* mkey = const_cast(keys); - for (int i = 0; i < n; i++) { - mkey[i] = ExtractUserKey(keys[i]); - // TODO(sanjay): Suppress dups? - } - user_policy_->CreateFilter(keys, n, dst); -} - -bool InternalFilterPolicy::KeyMayMatch(const Slice& key, const Slice& f) const { - return user_policy_->KeyMayMatch(ExtractUserKey(key), f); -} - -LookupKey::LookupKey(const Slice& user_key, SequenceNumber s) { - size_t usize = user_key.size(); - size_t needed = usize + 13; // A conservative estimate - char* dst; - if (needed <= sizeof(space_)) { - dst = space_; - } else { - dst = new char[needed]; - } - start_ = dst; - dst = EncodeVarint32(dst, usize + 8); - kstart_ = dst; - memcpy(dst, user_key.data(), usize); - dst += usize; - EncodeFixed64(dst, PackSequenceAndType(s, kValueTypeForSeek)); - dst += 8; - end_ = dst; -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/dbformat.h b/leveldb-1.18/db/dbformat.h deleted file mode 100644 index ea897b1..0000000 --- a/leveldb-1.18/db/dbformat.h +++ /dev/null @@ -1,230 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_DBFORMAT_H_ -#define STORAGE_LEVELDB_DB_DBFORMAT_H_ - -#include -#include "leveldb/comparator.h" -#include "leveldb/db.h" -#include "leveldb/filter_policy.h" -#include "leveldb/slice.h" -#include "leveldb/table_builder.h" -#include "util/coding.h" -#include "util/logging.h" - -namespace leveldb { - -// Grouping of constants. We may want to make some of these -// parameters set via options. -namespace config { -static const int kNumLevels = 7; - -// Level-0 compaction is started when we hit this many files. -static const int kL0_CompactionTrigger = 4; - -// Soft limit on number of level-0 files. We slow down writes at this point. -static const int kL0_SlowdownWritesTrigger = 8; - -// Maximum number of level-0 files. We stop writes at this point. -static const int kL0_StopWritesTrigger = 12; - -// Maximum level to which a new compacted memtable is pushed if it -// does not create overlap. We try to push to level 2 to avoid the -// relatively expensive level 0=>1 compactions and to avoid some -// expensive manifest file operations. We do not push all the way to -// the largest level since that can generate a lot of wasted disk -// space if the same key space is being repeatedly overwritten. -static const int kMaxMemCompactLevel = 2; - -// Approximate gap in bytes between samples of data read during iteration. -static const int kReadBytesPeriod = 1048576; - -} // namespace config - -class InternalKey; - -// Value types encoded as the last component of internal keys. -// DO NOT CHANGE THESE ENUM VALUES: they are embedded in the on-disk -// data structures. -enum ValueType { - kTypeDeletion = 0x0, - kTypeValue = 0x1 -}; -// kValueTypeForSeek defines the ValueType that should be passed when -// constructing a ParsedInternalKey object for seeking to a particular -// sequence number (since we sort sequence numbers in decreasing order -// and the value type is embedded as the low 8 bits in the sequence -// number in internal keys, we need to use the highest-numbered -// ValueType, not the lowest). -static const ValueType kValueTypeForSeek = kTypeValue; - -typedef uint64_t SequenceNumber; - -// We leave eight bits empty at the bottom so a type and sequence# -// can be packed together into 64-bits. -static const SequenceNumber kMaxSequenceNumber = - ((0x1ull << 56) - 1); - -struct ParsedInternalKey { - Slice user_key; - SequenceNumber sequence; - ValueType type; - - ParsedInternalKey() { } // Intentionally left uninitialized (for speed) - ParsedInternalKey(const Slice& u, const SequenceNumber& seq, ValueType t) - : user_key(u), sequence(seq), type(t) { } - std::string DebugString() const; -}; - -// Return the length of the encoding of "key". -inline size_t InternalKeyEncodingLength(const ParsedInternalKey& key) { - return key.user_key.size() + 8; -} - -// Append the serialization of "key" to *result. -extern void AppendInternalKey(std::string* result, - const ParsedInternalKey& key); - -// Attempt to parse an internal key from "internal_key". On success, -// stores the parsed data in "*result", and returns true. -// -// On error, returns false, leaves "*result" in an undefined state. -extern bool ParseInternalKey(const Slice& internal_key, - ParsedInternalKey* result); - -// Returns the user key portion of an internal key. -inline Slice ExtractUserKey(const Slice& internal_key) { - assert(internal_key.size() >= 8); - return Slice(internal_key.data(), internal_key.size() - 8); -} - -inline ValueType ExtractValueType(const Slice& internal_key) { - assert(internal_key.size() >= 8); - const size_t n = internal_key.size(); - uint64_t num = DecodeFixed64(internal_key.data() + n - 8); - unsigned char c = num & 0xff; - return static_cast(c); -} - -// A comparator for internal keys that uses a specified comparator for -// the user key portion and breaks ties by decreasing sequence number. -class InternalKeyComparator : public Comparator { - private: - const Comparator* user_comparator_; - public: - explicit InternalKeyComparator(const Comparator* c) : user_comparator_(c) { } - virtual const char* Name() const; - virtual int Compare(const Slice& a, const Slice& b) const; - virtual void FindShortestSeparator( - std::string* start, - const Slice& limit) const; - virtual void FindShortSuccessor(std::string* key) const; - - const Comparator* user_comparator() const { return user_comparator_; } - - int Compare(const InternalKey& a, const InternalKey& b) const; -}; - -// Filter policy wrapper that converts from internal keys to user keys -class InternalFilterPolicy : public FilterPolicy { - private: - const FilterPolicy* const user_policy_; - public: - explicit InternalFilterPolicy(const FilterPolicy* p) : user_policy_(p) { } - virtual const char* Name() const; - virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const; - virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const; -}; - -// Modules in this directory should keep internal keys wrapped inside -// the following class instead of plain strings so that we do not -// incorrectly use string comparisons instead of an InternalKeyComparator. -class InternalKey { - private: - std::string rep_; - public: - InternalKey() { } // Leave rep_ as empty to indicate it is invalid - InternalKey(const Slice& user_key, SequenceNumber s, ValueType t) { - AppendInternalKey(&rep_, ParsedInternalKey(user_key, s, t)); - } - - void DecodeFrom(const Slice& s) { rep_.assign(s.data(), s.size()); } - Slice Encode() const { - assert(!rep_.empty()); - return rep_; - } - - Slice user_key() const { return ExtractUserKey(rep_); } - - void SetFrom(const ParsedInternalKey& p) { - rep_.clear(); - AppendInternalKey(&rep_, p); - } - - void Clear() { rep_.clear(); } - - std::string DebugString() const; -}; - -inline int InternalKeyComparator::Compare( - const InternalKey& a, const InternalKey& b) const { - return Compare(a.Encode(), b.Encode()); -} - -inline bool ParseInternalKey(const Slice& internal_key, - ParsedInternalKey* result) { - const size_t n = internal_key.size(); - if (n < 8) return false; - uint64_t num = DecodeFixed64(internal_key.data() + n - 8); - unsigned char c = num & 0xff; - result->sequence = num >> 8; - result->type = static_cast(c); - result->user_key = Slice(internal_key.data(), n - 8); - return (c <= static_cast(kTypeValue)); -} - -// A helper class useful for DBImpl::Get() -class LookupKey { - public: - // Initialize *this for looking up user_key at a snapshot with - // the specified sequence number. - LookupKey(const Slice& user_key, SequenceNumber sequence); - - ~LookupKey(); - - // Return a key suitable for lookup in a MemTable. - Slice memtable_key() const { return Slice(start_, end_ - start_); } - - // Return an internal key (suitable for passing to an internal iterator) - Slice internal_key() const { return Slice(kstart_, end_ - kstart_); } - - // Return the user key - Slice user_key() const { return Slice(kstart_, end_ - kstart_ - 8); } - - private: - // We construct a char array of the form: - // klength varint32 <-- start_ - // userkey char[klength] <-- kstart_ - // tag uint64 - // <-- end_ - // The array is a suitable MemTable key. - // The suffix starting with "userkey" can be used as an InternalKey. - const char* start_; - const char* kstart_; - const char* end_; - char space_[200]; // Avoid allocation for short keys - - // No copying allowed - LookupKey(const LookupKey&); - void operator=(const LookupKey&); -}; - -inline LookupKey::~LookupKey() { - if (start_ != space_) delete[] start_; -} - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_DBFORMAT_H_ diff --git a/leveldb-1.18/db/dbformat_test.cc b/leveldb-1.18/db/dbformat_test.cc deleted file mode 100644 index 5d82f5d..0000000 --- a/leveldb-1.18/db/dbformat_test.cc +++ /dev/null @@ -1,112 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/dbformat.h" -#include "util/logging.h" -#include "util/testharness.h" - -namespace leveldb { - -static std::string IKey(const std::string& user_key, - uint64_t seq, - ValueType vt) { - std::string encoded; - AppendInternalKey(&encoded, ParsedInternalKey(user_key, seq, vt)); - return encoded; -} - -static std::string Shorten(const std::string& s, const std::string& l) { - std::string result = s; - InternalKeyComparator(BytewiseComparator()).FindShortestSeparator(&result, l); - return result; -} - -static std::string ShortSuccessor(const std::string& s) { - std::string result = s; - InternalKeyComparator(BytewiseComparator()).FindShortSuccessor(&result); - return result; -} - -static void TestKey(const std::string& key, - uint64_t seq, - ValueType vt) { - std::string encoded = IKey(key, seq, vt); - - Slice in(encoded); - ParsedInternalKey decoded("", 0, kTypeValue); - - ASSERT_TRUE(ParseInternalKey(in, &decoded)); - ASSERT_EQ(key, decoded.user_key.ToString()); - ASSERT_EQ(seq, decoded.sequence); - ASSERT_EQ(vt, decoded.type); - - ASSERT_TRUE(!ParseInternalKey(Slice("bar"), &decoded)); -} - -class FormatTest { }; - -TEST(FormatTest, InternalKey_EncodeDecode) { - const char* keys[] = { "", "k", "hello", "longggggggggggggggggggggg" }; - const uint64_t seq[] = { - 1, 2, 3, - (1ull << 8) - 1, 1ull << 8, (1ull << 8) + 1, - (1ull << 16) - 1, 1ull << 16, (1ull << 16) + 1, - (1ull << 32) - 1, 1ull << 32, (1ull << 32) + 1 - }; - for (int k = 0; k < sizeof(keys) / sizeof(keys[0]); k++) { - for (int s = 0; s < sizeof(seq) / sizeof(seq[0]); s++) { - TestKey(keys[k], seq[s], kTypeValue); - TestKey("hello", 1, kTypeDeletion); - } - } -} - -TEST(FormatTest, InternalKeyShortSeparator) { - // When user keys are same - ASSERT_EQ(IKey("foo", 100, kTypeValue), - Shorten(IKey("foo", 100, kTypeValue), - IKey("foo", 99, kTypeValue))); - ASSERT_EQ(IKey("foo", 100, kTypeValue), - Shorten(IKey("foo", 100, kTypeValue), - IKey("foo", 101, kTypeValue))); - ASSERT_EQ(IKey("foo", 100, kTypeValue), - Shorten(IKey("foo", 100, kTypeValue), - IKey("foo", 100, kTypeValue))); - ASSERT_EQ(IKey("foo", 100, kTypeValue), - Shorten(IKey("foo", 100, kTypeValue), - IKey("foo", 100, kTypeDeletion))); - - // When user keys are misordered - ASSERT_EQ(IKey("foo", 100, kTypeValue), - Shorten(IKey("foo", 100, kTypeValue), - IKey("bar", 99, kTypeValue))); - - // When user keys are different, but correctly ordered - ASSERT_EQ(IKey("g", kMaxSequenceNumber, kValueTypeForSeek), - Shorten(IKey("foo", 100, kTypeValue), - IKey("hello", 200, kTypeValue))); - - // When start user key is prefix of limit user key - ASSERT_EQ(IKey("foo", 100, kTypeValue), - Shorten(IKey("foo", 100, kTypeValue), - IKey("foobar", 200, kTypeValue))); - - // When limit user key is prefix of start user key - ASSERT_EQ(IKey("foobar", 100, kTypeValue), - Shorten(IKey("foobar", 100, kTypeValue), - IKey("foo", 200, kTypeValue))); -} - -TEST(FormatTest, InternalKeyShortestSuccessor) { - ASSERT_EQ(IKey("g", kMaxSequenceNumber, kValueTypeForSeek), - ShortSuccessor(IKey("foo", 100, kTypeValue))); - ASSERT_EQ(IKey("\xff\xff", 100, kTypeValue), - ShortSuccessor(IKey("\xff\xff", 100, kTypeValue))); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/dumpfile.cc b/leveldb-1.18/db/dumpfile.cc deleted file mode 100644 index 61c47c2..0000000 --- a/leveldb-1.18/db/dumpfile.cc +++ /dev/null @@ -1,225 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include "db/dbformat.h" -#include "db/filename.h" -#include "db/log_reader.h" -#include "db/version_edit.h" -#include "db/write_batch_internal.h" -#include "leveldb/env.h" -#include "leveldb/iterator.h" -#include "leveldb/options.h" -#include "leveldb/status.h" -#include "leveldb/table.h" -#include "leveldb/write_batch.h" -#include "util/logging.h" - -namespace leveldb { - -namespace { - -bool GuessType(const std::string& fname, FileType* type) { - size_t pos = fname.rfind('/'); - std::string basename; - if (pos == std::string::npos) { - basename = fname; - } else { - basename = std::string(fname.data() + pos + 1, fname.size() - pos - 1); - } - uint64_t ignored; - return ParseFileName(basename, &ignored, type); -} - -// Notified when log reader encounters corruption. -class CorruptionReporter : public log::Reader::Reporter { - public: - WritableFile* dst_; - virtual void Corruption(size_t bytes, const Status& status) { - std::string r = "corruption: "; - AppendNumberTo(&r, bytes); - r += " bytes; "; - r += status.ToString(); - r.push_back('\n'); - dst_->Append(r); - } -}; - -// Print contents of a log file. (*func)() is called on every record. -Status PrintLogContents(Env* env, const std::string& fname, - void (*func)(uint64_t, Slice, WritableFile*), - WritableFile* dst) { - SequentialFile* file; - Status s = env->NewSequentialFile(fname, &file); - if (!s.ok()) { - return s; - } - CorruptionReporter reporter; - reporter.dst_ = dst; - log::Reader reader(file, &reporter, true, 0); - Slice record; - std::string scratch; - while (reader.ReadRecord(&record, &scratch)) { - (*func)(reader.LastRecordOffset(), record, dst); - } - delete file; - return Status::OK(); -} - -// Called on every item found in a WriteBatch. -class WriteBatchItemPrinter : public WriteBatch::Handler { - public: - WritableFile* dst_; - virtual void Put(const Slice& key, const Slice& value) { - std::string r = " put '"; - AppendEscapedStringTo(&r, key); - r += "' '"; - AppendEscapedStringTo(&r, value); - r += "'\n"; - dst_->Append(r); - } - virtual void Delete(const Slice& key) { - std::string r = " del '"; - AppendEscapedStringTo(&r, key); - r += "'\n"; - dst_->Append(r); - } -}; - - -// Called on every log record (each one of which is a WriteBatch) -// found in a kLogFile. -static void WriteBatchPrinter(uint64_t pos, Slice record, WritableFile* dst) { - std::string r = "--- offset "; - AppendNumberTo(&r, pos); - r += "; "; - if (record.size() < 12) { - r += "log record length "; - AppendNumberTo(&r, record.size()); - r += " is too small\n"; - dst->Append(r); - return; - } - WriteBatch batch; - WriteBatchInternal::SetContents(&batch, record); - r += "sequence "; - AppendNumberTo(&r, WriteBatchInternal::Sequence(&batch)); - r.push_back('\n'); - dst->Append(r); - WriteBatchItemPrinter batch_item_printer; - batch_item_printer.dst_ = dst; - Status s = batch.Iterate(&batch_item_printer); - if (!s.ok()) { - dst->Append(" error: " + s.ToString() + "\n"); - } -} - -Status DumpLog(Env* env, const std::string& fname, WritableFile* dst) { - return PrintLogContents(env, fname, WriteBatchPrinter, dst); -} - -// Called on every log record (each one of which is a WriteBatch) -// found in a kDescriptorFile. -static void VersionEditPrinter(uint64_t pos, Slice record, WritableFile* dst) { - std::string r = "--- offset "; - AppendNumberTo(&r, pos); - r += "; "; - VersionEdit edit; - Status s = edit.DecodeFrom(record); - if (!s.ok()) { - r += s.ToString(); - r.push_back('\n'); - } else { - r += edit.DebugString(); - } - dst->Append(r); -} - -Status DumpDescriptor(Env* env, const std::string& fname, WritableFile* dst) { - return PrintLogContents(env, fname, VersionEditPrinter, dst); -} - -Status DumpTable(Env* env, const std::string& fname, WritableFile* dst) { - uint64_t file_size; - RandomAccessFile* file = NULL; - Table* table = NULL; - Status s = env->GetFileSize(fname, &file_size); - if (s.ok()) { - s = env->NewRandomAccessFile(fname, &file); - } - if (s.ok()) { - // We use the default comparator, which may or may not match the - // comparator used in this database. However this should not cause - // problems since we only use Table operations that do not require - // any comparisons. In particular, we do not call Seek or Prev. - s = Table::Open(Options(), file, file_size, &table); - } - if (!s.ok()) { - delete table; - delete file; - return s; - } - - ReadOptions ro; - ro.fill_cache = false; - Iterator* iter = table->NewIterator(ro); - std::string r; - for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { - r.clear(); - ParsedInternalKey key; - if (!ParseInternalKey(iter->key(), &key)) { - r = "badkey '"; - AppendEscapedStringTo(&r, iter->key()); - r += "' => '"; - AppendEscapedStringTo(&r, iter->value()); - r += "'\n"; - dst->Append(r); - } else { - r = "'"; - AppendEscapedStringTo(&r, key.user_key); - r += "' @ "; - AppendNumberTo(&r, key.sequence); - r += " : "; - if (key.type == kTypeDeletion) { - r += "del"; - } else if (key.type == kTypeValue) { - r += "val"; - } else { - AppendNumberTo(&r, key.type); - } - r += " => '"; - AppendEscapedStringTo(&r, iter->value()); - r += "'\n"; - dst->Append(r); - } - } - s = iter->status(); - if (!s.ok()) { - dst->Append("iterator error: " + s.ToString() + "\n"); - } - - delete iter; - delete table; - delete file; - return Status::OK(); -} - -} // namespace - -Status DumpFile(Env* env, const std::string& fname, WritableFile* dst) { - FileType ftype; - if (!GuessType(fname, &ftype)) { - return Status::InvalidArgument(fname + ": unknown file type"); - } - switch (ftype) { - case kLogFile: return DumpLog(env, fname, dst); - case kDescriptorFile: return DumpDescriptor(env, fname, dst); - case kTableFile: return DumpTable(env, fname, dst); - default: - break; - } - return Status::InvalidArgument(fname + ": not a dump-able file type"); -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/filename.cc b/leveldb-1.18/db/filename.cc deleted file mode 100644 index da32946..0000000 --- a/leveldb-1.18/db/filename.cc +++ /dev/null @@ -1,144 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include -#include "db/filename.h" -#include "db/dbformat.h" -#include "leveldb/env.h" -#include "util/logging.h" - -namespace leveldb { - -// A utility routine: write "data" to the named file and Sync() it. -extern Status WriteStringToFileSync(Env* env, const Slice& data, - const std::string& fname); - -static std::string MakeFileName(const std::string& name, uint64_t number, - const char* suffix) { - char buf[100]; - snprintf(buf, sizeof(buf), "/%06llu.%s", - static_cast(number), - suffix); - return name + buf; -} - -std::string LogFileName(const std::string& name, uint64_t number) { - assert(number > 0); - return MakeFileName(name, number, "log"); -} - -std::string TableFileName(const std::string& name, uint64_t number) { - assert(number > 0); - return MakeFileName(name, number, "ldb"); -} - -std::string SSTTableFileName(const std::string& name, uint64_t number) { - assert(number > 0); - return MakeFileName(name, number, "sst"); -} - -std::string DescriptorFileName(const std::string& dbname, uint64_t number) { - assert(number > 0); - char buf[100]; - snprintf(buf, sizeof(buf), "/MANIFEST-%06llu", - static_cast(number)); - return dbname + buf; -} - -std::string CurrentFileName(const std::string& dbname) { - return dbname + "/CURRENT"; -} - -std::string LockFileName(const std::string& dbname) { - return dbname + "/LOCK"; -} - -std::string TempFileName(const std::string& dbname, uint64_t number) { - assert(number > 0); - return MakeFileName(dbname, number, "dbtmp"); -} - -std::string InfoLogFileName(const std::string& dbname) { - return dbname + "/LOG"; -} - -// Return the name of the old info log file for "dbname". -std::string OldInfoLogFileName(const std::string& dbname) { - return dbname + "/LOG.old"; -} - - -// Owned filenames have the form: -// dbname/CURRENT -// dbname/LOCK -// dbname/LOG -// dbname/LOG.old -// dbname/MANIFEST-[0-9]+ -// dbname/[0-9]+.(log|sst|ldb) -bool ParseFileName(const std::string& fname, - uint64_t* number, - FileType* type) { - Slice rest(fname); - if (rest == "CURRENT") { - *number = 0; - *type = kCurrentFile; - } else if (rest == "LOCK") { - *number = 0; - *type = kDBLockFile; - } else if (rest == "LOG" || rest == "LOG.old") { - *number = 0; - *type = kInfoLogFile; - } else if (rest.starts_with("MANIFEST-")) { - rest.remove_prefix(strlen("MANIFEST-")); - uint64_t num; - if (!ConsumeDecimalNumber(&rest, &num)) { - return false; - } - if (!rest.empty()) { - return false; - } - *type = kDescriptorFile; - *number = num; - } else { - // Avoid strtoull() to keep filename format independent of the - // current locale - uint64_t num; - if (!ConsumeDecimalNumber(&rest, &num)) { - return false; - } - Slice suffix = rest; - if (suffix == Slice(".log")) { - *type = kLogFile; - } else if (suffix == Slice(".sst") || suffix == Slice(".ldb")) { - *type = kTableFile; - } else if (suffix == Slice(".dbtmp")) { - *type = kTempFile; - } else { - return false; - } - *number = num; - } - return true; -} - -Status SetCurrentFile(Env* env, const std::string& dbname, - uint64_t descriptor_number) { - // Remove leading "dbname/" and add newline to manifest file name - std::string manifest = DescriptorFileName(dbname, descriptor_number); - Slice contents = manifest; - assert(contents.starts_with(dbname + "/")); - contents.remove_prefix(dbname.size() + 1); - std::string tmp = TempFileName(dbname, descriptor_number); - Status s = WriteStringToFileSync(env, contents.ToString() + "\n", tmp); - if (s.ok()) { - s = env->RenameFile(tmp, CurrentFileName(dbname)); - } - if (!s.ok()) { - env->DeleteFile(tmp); - } - return s; -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/filename.h b/leveldb-1.18/db/filename.h deleted file mode 100644 index 87a7526..0000000 --- a/leveldb-1.18/db/filename.h +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// File names used by DB code - -#ifndef STORAGE_LEVELDB_DB_FILENAME_H_ -#define STORAGE_LEVELDB_DB_FILENAME_H_ - -#include -#include -#include "leveldb/slice.h" -#include "leveldb/status.h" -#include "port/port.h" - -namespace leveldb { - -class Env; - -enum FileType { - kLogFile, - kDBLockFile, - kTableFile, - kDescriptorFile, - kCurrentFile, - kTempFile, - kInfoLogFile // Either the current one, or an old one -}; - -// Return the name of the log file with the specified number -// in the db named by "dbname". The result will be prefixed with -// "dbname". -extern std::string LogFileName(const std::string& dbname, uint64_t number); - -// Return the name of the sstable with the specified number -// in the db named by "dbname". The result will be prefixed with -// "dbname". -extern std::string TableFileName(const std::string& dbname, uint64_t number); - -// Return the legacy file name for an sstable with the specified number -// in the db named by "dbname". The result will be prefixed with -// "dbname". -extern std::string SSTTableFileName(const std::string& dbname, uint64_t number); - -// Return the name of the descriptor file for the db named by -// "dbname" and the specified incarnation number. The result will be -// prefixed with "dbname". -extern std::string DescriptorFileName(const std::string& dbname, - uint64_t number); - -// Return the name of the current file. This file contains the name -// of the current manifest file. The result will be prefixed with -// "dbname". -extern std::string CurrentFileName(const std::string& dbname); - -// Return the name of the lock file for the db named by -// "dbname". The result will be prefixed with "dbname". -extern std::string LockFileName(const std::string& dbname); - -// Return the name of a temporary file owned by the db named "dbname". -// The result will be prefixed with "dbname". -extern std::string TempFileName(const std::string& dbname, uint64_t number); - -// Return the name of the info log file for "dbname". -extern std::string InfoLogFileName(const std::string& dbname); - -// Return the name of the old info log file for "dbname". -extern std::string OldInfoLogFileName(const std::string& dbname); - -// If filename is a leveldb file, store the type of the file in *type. -// The number encoded in the filename is stored in *number. If the -// filename was successfully parsed, returns true. Else return false. -extern bool ParseFileName(const std::string& filename, - uint64_t* number, - FileType* type); - -// Make the CURRENT file point to the descriptor file with the -// specified number. -extern Status SetCurrentFile(Env* env, const std::string& dbname, - uint64_t descriptor_number); - - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_FILENAME_H_ diff --git a/leveldb-1.18/db/filename_test.cc b/leveldb-1.18/db/filename_test.cc deleted file mode 100644 index a32556d..0000000 --- a/leveldb-1.18/db/filename_test.cc +++ /dev/null @@ -1,123 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/filename.h" - -#include "db/dbformat.h" -#include "port/port.h" -#include "util/logging.h" -#include "util/testharness.h" - -namespace leveldb { - -class FileNameTest { }; - -TEST(FileNameTest, Parse) { - Slice db; - FileType type; - uint64_t number; - - // Successful parses - static struct { - const char* fname; - uint64_t number; - FileType type; - } cases[] = { - { "100.log", 100, kLogFile }, - { "0.log", 0, kLogFile }, - { "0.sst", 0, kTableFile }, - { "0.ldb", 0, kTableFile }, - { "CURRENT", 0, kCurrentFile }, - { "LOCK", 0, kDBLockFile }, - { "MANIFEST-2", 2, kDescriptorFile }, - { "MANIFEST-7", 7, kDescriptorFile }, - { "LOG", 0, kInfoLogFile }, - { "LOG.old", 0, kInfoLogFile }, - { "18446744073709551615.log", 18446744073709551615ull, kLogFile }, - }; - for (int i = 0; i < sizeof(cases) / sizeof(cases[0]); i++) { - std::string f = cases[i].fname; - ASSERT_TRUE(ParseFileName(f, &number, &type)) << f; - ASSERT_EQ(cases[i].type, type) << f; - ASSERT_EQ(cases[i].number, number) << f; - } - - // Errors - static const char* errors[] = { - "", - "foo", - "foo-dx-100.log", - ".log", - "", - "manifest", - "CURREN", - "CURRENTX", - "MANIFES", - "MANIFEST", - "MANIFEST-", - "XMANIFEST-3", - "MANIFEST-3x", - "LOC", - "LOCKx", - "LO", - "LOGx", - "18446744073709551616.log", - "184467440737095516150.log", - "100", - "100.", - "100.lop" - }; - for (int i = 0; i < sizeof(errors) / sizeof(errors[0]); i++) { - std::string f = errors[i]; - ASSERT_TRUE(!ParseFileName(f, &number, &type)) << f; - } -} - -TEST(FileNameTest, Construction) { - uint64_t number; - FileType type; - std::string fname; - - fname = CurrentFileName("foo"); - ASSERT_EQ("foo/", std::string(fname.data(), 4)); - ASSERT_TRUE(ParseFileName(fname.c_str() + 4, &number, &type)); - ASSERT_EQ(0, number); - ASSERT_EQ(kCurrentFile, type); - - fname = LockFileName("foo"); - ASSERT_EQ("foo/", std::string(fname.data(), 4)); - ASSERT_TRUE(ParseFileName(fname.c_str() + 4, &number, &type)); - ASSERT_EQ(0, number); - ASSERT_EQ(kDBLockFile, type); - - fname = LogFileName("foo", 192); - ASSERT_EQ("foo/", std::string(fname.data(), 4)); - ASSERT_TRUE(ParseFileName(fname.c_str() + 4, &number, &type)); - ASSERT_EQ(192, number); - ASSERT_EQ(kLogFile, type); - - fname = TableFileName("bar", 200); - ASSERT_EQ("bar/", std::string(fname.data(), 4)); - ASSERT_TRUE(ParseFileName(fname.c_str() + 4, &number, &type)); - ASSERT_EQ(200, number); - ASSERT_EQ(kTableFile, type); - - fname = DescriptorFileName("bar", 100); - ASSERT_EQ("bar/", std::string(fname.data(), 4)); - ASSERT_TRUE(ParseFileName(fname.c_str() + 4, &number, &type)); - ASSERT_EQ(100, number); - ASSERT_EQ(kDescriptorFile, type); - - fname = TempFileName("tmp", 999); - ASSERT_EQ("tmp/", std::string(fname.data(), 4)); - ASSERT_TRUE(ParseFileName(fname.c_str() + 4, &number, &type)); - ASSERT_EQ(999, number); - ASSERT_EQ(kTempFile, type); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/leveldb_main.cc b/leveldb-1.18/db/leveldb_main.cc deleted file mode 100644 index 9f4b7dd..0000000 --- a/leveldb-1.18/db/leveldb_main.cc +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include "leveldb/dumpfile.h" -#include "leveldb/env.h" -#include "leveldb/status.h" - -namespace leveldb { -namespace { - -class StdoutPrinter : public WritableFile { - public: - virtual Status Append(const Slice& data) { - fwrite(data.data(), 1, data.size(), stdout); - return Status::OK(); - } - virtual Status Close() { return Status::OK(); } - virtual Status Flush() { return Status::OK(); } - virtual Status Sync() { return Status::OK(); } -}; - -bool HandleDumpCommand(Env* env, char** files, int num) { - StdoutPrinter printer; - bool ok = true; - for (int i = 0; i < num; i++) { - Status s = DumpFile(env, files[i], &printer); - if (!s.ok()) { - fprintf(stderr, "%s\n", s.ToString().c_str()); - ok = false; - } - } - return ok; -} - -} // namespace -} // namespace leveldb - -static void Usage() { - fprintf( - stderr, - "Usage: leveldbutil command...\n" - " dump files... -- dump contents of specified files\n" - ); -} - -int main(int argc, char** argv) { - leveldb::Env* env = leveldb::Env::Default(); - bool ok = true; - if (argc < 2) { - Usage(); - ok = false; - } else { - std::string command = argv[1]; - if (command == "dump") { - ok = leveldb::HandleDumpCommand(env, argv+2, argc-2); - } else { - Usage(); - ok = false; - } - } - return (ok ? 0 : 1); -} diff --git a/leveldb-1.18/db/log_format.h b/leveldb-1.18/db/log_format.h deleted file mode 100644 index a8c06ef..0000000 --- a/leveldb-1.18/db/log_format.h +++ /dev/null @@ -1,35 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Log format information shared by reader and writer. -// See ../doc/log_format.txt for more detail. - -#ifndef STORAGE_LEVELDB_DB_LOG_FORMAT_H_ -#define STORAGE_LEVELDB_DB_LOG_FORMAT_H_ - -namespace leveldb { -namespace log { - -enum RecordType { - // Zero is reserved for preallocated files - kZeroType = 0, - - kFullType = 1, - - // For fragments - kFirstType = 2, - kMiddleType = 3, - kLastType = 4 -}; -static const int kMaxRecordType = kLastType; - -static const int kBlockSize = 32768; - -// Header is checksum (4 bytes), length (2 bytes), type (1 byte). -static const int kHeaderSize = 4 + 2 + 1; - -} // namespace log -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_LOG_FORMAT_H_ diff --git a/leveldb-1.18/db/log_reader.cc b/leveldb-1.18/db/log_reader.cc deleted file mode 100644 index e44b66c..0000000 --- a/leveldb-1.18/db/log_reader.cc +++ /dev/null @@ -1,266 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/log_reader.h" - -#include -#include "leveldb/env.h" -#include "util/coding.h" -#include "util/crc32c.h" - -namespace leveldb { -namespace log { - -Reader::Reporter::~Reporter() { -} - -Reader::Reader(SequentialFile* file, Reporter* reporter, bool checksum, - uint64_t initial_offset) - : file_(file), - reporter_(reporter), - checksum_(checksum), - backing_store_(new char[kBlockSize]), - buffer_(), - eof_(false), - last_record_offset_(0), - end_of_buffer_offset_(0), - initial_offset_(initial_offset) { -} - -Reader::~Reader() { - delete[] backing_store_; -} - -bool Reader::SkipToInitialBlock() { - size_t offset_in_block = initial_offset_ % kBlockSize; - uint64_t block_start_location = initial_offset_ - offset_in_block; - - // Don't search a block if we'd be in the trailer - if (offset_in_block > kBlockSize - 6) { - offset_in_block = 0; - block_start_location += kBlockSize; - } - - end_of_buffer_offset_ = block_start_location; - - // Skip to start of first block that can contain the initial record - if (block_start_location > 0) { - Status skip_status = file_->Skip(block_start_location); - if (!skip_status.ok()) { - ReportDrop(block_start_location, skip_status); - return false; - } - } - - return true; -} - -bool Reader::ReadRecord(Slice* record, std::string* scratch) { - if (last_record_offset_ < initial_offset_) { - if (!SkipToInitialBlock()) { - return false; - } - } - - scratch->clear(); - record->clear(); - bool in_fragmented_record = false; - // Record offset of the logical record that we're reading - // 0 is a dummy value to make compilers happy - uint64_t prospective_record_offset = 0; - - Slice fragment; - while (true) { - uint64_t physical_record_offset = end_of_buffer_offset_ - buffer_.size(); - const unsigned int record_type = ReadPhysicalRecord(&fragment); - switch (record_type) { - case kFullType: - if (in_fragmented_record) { - // Handle bug in earlier versions of log::Writer where - // it could emit an empty kFirstType record at the tail end - // of a block followed by a kFullType or kFirstType record - // at the beginning of the next block. - if (scratch->empty()) { - in_fragmented_record = false; - } else { - ReportCorruption(scratch->size(), "partial record without end(1)"); - } - } - prospective_record_offset = physical_record_offset; - scratch->clear(); - *record = fragment; - last_record_offset_ = prospective_record_offset; - return true; - - case kFirstType: - if (in_fragmented_record) { - // Handle bug in earlier versions of log::Writer where - // it could emit an empty kFirstType record at the tail end - // of a block followed by a kFullType or kFirstType record - // at the beginning of the next block. - if (scratch->empty()) { - in_fragmented_record = false; - } else { - ReportCorruption(scratch->size(), "partial record without end(2)"); - } - } - prospective_record_offset = physical_record_offset; - scratch->assign(fragment.data(), fragment.size()); - in_fragmented_record = true; - break; - - case kMiddleType: - if (!in_fragmented_record) { - ReportCorruption(fragment.size(), - "missing start of fragmented record(1)"); - } else { - scratch->append(fragment.data(), fragment.size()); - } - break; - - case kLastType: - if (!in_fragmented_record) { - ReportCorruption(fragment.size(), - "missing start of fragmented record(2)"); - } else { - scratch->append(fragment.data(), fragment.size()); - *record = Slice(*scratch); - last_record_offset_ = prospective_record_offset; - return true; - } - break; - - case kEof: - if (in_fragmented_record) { - // This can be caused by the writer dying immediately after - // writing a physical record but before completing the next; don't - // treat it as a corruption, just ignore the entire logical record. - scratch->clear(); - } - return false; - - case kBadRecord: - if (in_fragmented_record) { - ReportCorruption(scratch->size(), "error in middle of record"); - in_fragmented_record = false; - scratch->clear(); - } - break; - - default: { - char buf[40]; - snprintf(buf, sizeof(buf), "unknown record type %u", record_type); - ReportCorruption( - (fragment.size() + (in_fragmented_record ? scratch->size() : 0)), - buf); - in_fragmented_record = false; - scratch->clear(); - break; - } - } - } - return false; -} - -uint64_t Reader::LastRecordOffset() { - return last_record_offset_; -} - -void Reader::ReportCorruption(uint64_t bytes, const char* reason) { - ReportDrop(bytes, Status::Corruption(reason)); -} - -void Reader::ReportDrop(uint64_t bytes, const Status& reason) { - if (reporter_ != NULL && - end_of_buffer_offset_ - buffer_.size() - bytes >= initial_offset_) { - reporter_->Corruption(static_cast(bytes), reason); - } -} - -unsigned int Reader::ReadPhysicalRecord(Slice* result) { - while (true) { - if (buffer_.size() < kHeaderSize) { - if (!eof_) { - // Last read was a full read, so this is a trailer to skip - buffer_.clear(); - Status status = file_->Read(kBlockSize, &buffer_, backing_store_); - end_of_buffer_offset_ += buffer_.size(); - if (!status.ok()) { - buffer_.clear(); - ReportDrop(kBlockSize, status); - eof_ = true; - return kEof; - } else if (buffer_.size() < kBlockSize) { - eof_ = true; - } - continue; - } else { - // Note that if buffer_ is non-empty, we have a truncated header at the - // end of the file, which can be caused by the writer crashing in the - // middle of writing the header. Instead of considering this an error, - // just report EOF. - buffer_.clear(); - return kEof; - } - } - - // Parse the header - const char* header = buffer_.data(); - const uint32_t a = static_cast(header[4]) & 0xff; - const uint32_t b = static_cast(header[5]) & 0xff; - const unsigned int type = header[6]; - const uint32_t length = a | (b << 8); - if (kHeaderSize + length > buffer_.size()) { - size_t drop_size = buffer_.size(); - buffer_.clear(); - if (!eof_) { - ReportCorruption(drop_size, "bad record length"); - return kBadRecord; - } - // If the end of the file has been reached without reading |length| bytes - // of payload, assume the writer died in the middle of writing the record. - // Don't report a corruption. - return kEof; - } - - if (type == kZeroType && length == 0) { - // Skip zero length record without reporting any drops since - // such records are produced by the mmap based writing code in - // env_posix.cc that preallocates file regions. - buffer_.clear(); - return kBadRecord; - } - - // Check crc - if (checksum_) { - uint32_t expected_crc = crc32c::Unmask(DecodeFixed32(header)); - uint32_t actual_crc = crc32c::Value(header + 6, 1 + length); - if (actual_crc != expected_crc) { - // Drop the rest of the buffer since "length" itself may have - // been corrupted and if we trust it, we could find some - // fragment of a real log record that just happens to look - // like a valid log record. - size_t drop_size = buffer_.size(); - buffer_.clear(); - ReportCorruption(drop_size, "checksum mismatch"); - return kBadRecord; - } - } - - buffer_.remove_prefix(kHeaderSize + length); - - // Skip physical record that started before initial_offset_ - if (end_of_buffer_offset_ - buffer_.size() - kHeaderSize - length < - initial_offset_) { - result->clear(); - return kBadRecord; - } - - *result = Slice(header + kHeaderSize, length); - return type; - } -} - -} // namespace log -} // namespace leveldb diff --git a/leveldb-1.18/db/log_reader.h b/leveldb-1.18/db/log_reader.h deleted file mode 100644 index 6aff791..0000000 --- a/leveldb-1.18/db/log_reader.h +++ /dev/null @@ -1,108 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_LOG_READER_H_ -#define STORAGE_LEVELDB_DB_LOG_READER_H_ - -#include - -#include "db/log_format.h" -#include "leveldb/slice.h" -#include "leveldb/status.h" - -namespace leveldb { - -class SequentialFile; - -namespace log { - -class Reader { - public: - // Interface for reporting errors. - class Reporter { - public: - virtual ~Reporter(); - - // Some corruption was detected. "size" is the approximate number - // of bytes dropped due to the corruption. - virtual void Corruption(size_t bytes, const Status& status) = 0; - }; - - // Create a reader that will return log records from "*file". - // "*file" must remain live while this Reader is in use. - // - // If "reporter" is non-NULL, it is notified whenever some data is - // dropped due to a detected corruption. "*reporter" must remain - // live while this Reader is in use. - // - // If "checksum" is true, verify checksums if available. - // - // The Reader will start reading at the first record located at physical - // position >= initial_offset within the file. - Reader(SequentialFile* file, Reporter* reporter, bool checksum, - uint64_t initial_offset); - - ~Reader(); - - // Read the next record into *record. Returns true if read - // successfully, false if we hit end of the input. May use - // "*scratch" as temporary storage. The contents filled in *record - // will only be valid until the next mutating operation on this - // reader or the next mutation to *scratch. - bool ReadRecord(Slice* record, std::string* scratch); - - // Returns the physical offset of the last record returned by ReadRecord. - // - // Undefined before the first call to ReadRecord. - uint64_t LastRecordOffset(); - - private: - SequentialFile* const file_; - Reporter* const reporter_; - bool const checksum_; - char* const backing_store_; - Slice buffer_; - bool eof_; // Last Read() indicated EOF by returning < kBlockSize - - // Offset of the last record returned by ReadRecord. - uint64_t last_record_offset_; - // Offset of the first location past the end of buffer_. - uint64_t end_of_buffer_offset_; - - // Offset at which to start looking for the first record to return - uint64_t const initial_offset_; - - // Extend record types with the following special values - enum { - kEof = kMaxRecordType + 1, - // Returned whenever we find an invalid physical record. - // Currently there are three situations in which this happens: - // * The record has an invalid CRC (ReadPhysicalRecord reports a drop) - // * The record is a 0-length record (No drop is reported) - // * The record is below constructor's initial_offset (No drop is reported) - kBadRecord = kMaxRecordType + 2 - }; - - // Skips all blocks that are completely before "initial_offset_". - // - // Returns true on success. Handles reporting. - bool SkipToInitialBlock(); - - // Return type, or one of the preceding special values - unsigned int ReadPhysicalRecord(Slice* result); - - // Reports dropped bytes to the reporter. - // buffer_ must be updated to remove the dropped bytes prior to invocation. - void ReportCorruption(uint64_t bytes, const char* reason); - void ReportDrop(uint64_t bytes, const Status& reason); - - // No copying allowed - Reader(const Reader&); - void operator=(const Reader&); -}; - -} // namespace log -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_LOG_READER_H_ diff --git a/leveldb-1.18/db/log_test.cc b/leveldb-1.18/db/log_test.cc deleted file mode 100644 index dcf0562..0000000 --- a/leveldb-1.18/db/log_test.cc +++ /dev/null @@ -1,530 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/log_reader.h" -#include "db/log_writer.h" -#include "leveldb/env.h" -#include "util/coding.h" -#include "util/crc32c.h" -#include "util/random.h" -#include "util/testharness.h" - -namespace leveldb { -namespace log { - -// Construct a string of the specified length made out of the supplied -// partial string. -static std::string BigString(const std::string& partial_string, size_t n) { - std::string result; - while (result.size() < n) { - result.append(partial_string); - } - result.resize(n); - return result; -} - -// Construct a string from a number -static std::string NumberString(int n) { - char buf[50]; - snprintf(buf, sizeof(buf), "%d.", n); - return std::string(buf); -} - -// Return a skewed potentially long string -static std::string RandomSkewedString(int i, Random* rnd) { - return BigString(NumberString(i), rnd->Skewed(17)); -} - -class LogTest { - private: - class StringDest : public WritableFile { - public: - std::string contents_; - - virtual Status Close() { return Status::OK(); } - virtual Status Flush() { return Status::OK(); } - virtual Status Sync() { return Status::OK(); } - virtual Status Append(const Slice& slice) { - contents_.append(slice.data(), slice.size()); - return Status::OK(); - } - }; - - class StringSource : public SequentialFile { - public: - Slice contents_; - bool force_error_; - bool returned_partial_; - StringSource() : force_error_(false), returned_partial_(false) { } - - virtual Status Read(size_t n, Slice* result, char* scratch) { - ASSERT_TRUE(!returned_partial_) << "must not Read() after eof/error"; - - if (force_error_) { - force_error_ = false; - returned_partial_ = true; - return Status::Corruption("read error"); - } - - if (contents_.size() < n) { - n = contents_.size(); - returned_partial_ = true; - } - *result = Slice(contents_.data(), n); - contents_.remove_prefix(n); - return Status::OK(); - } - - virtual Status Skip(uint64_t n) { - if (n > contents_.size()) { - contents_.clear(); - return Status::NotFound("in-memory file skipepd past end"); - } - - contents_.remove_prefix(n); - - return Status::OK(); - } - }; - - class ReportCollector : public Reader::Reporter { - public: - size_t dropped_bytes_; - std::string message_; - - ReportCollector() : dropped_bytes_(0) { } - virtual void Corruption(size_t bytes, const Status& status) { - dropped_bytes_ += bytes; - message_.append(status.ToString()); - } - }; - - StringDest dest_; - StringSource source_; - ReportCollector report_; - bool reading_; - Writer writer_; - Reader reader_; - - // Record metadata for testing initial offset functionality - static size_t initial_offset_record_sizes_[]; - static uint64_t initial_offset_last_record_offsets_[]; - - public: - LogTest() : reading_(false), - writer_(&dest_), - reader_(&source_, &report_, true/*checksum*/, - 0/*initial_offset*/) { - } - - void Write(const std::string& msg) { - ASSERT_TRUE(!reading_) << "Write() after starting to read"; - writer_.AddRecord(Slice(msg)); - } - - size_t WrittenBytes() const { - return dest_.contents_.size(); - } - - std::string Read() { - if (!reading_) { - reading_ = true; - source_.contents_ = Slice(dest_.contents_); - } - std::string scratch; - Slice record; - if (reader_.ReadRecord(&record, &scratch)) { - return record.ToString(); - } else { - return "EOF"; - } - } - - void IncrementByte(int offset, int delta) { - dest_.contents_[offset] += delta; - } - - void SetByte(int offset, char new_byte) { - dest_.contents_[offset] = new_byte; - } - - void ShrinkSize(int bytes) { - dest_.contents_.resize(dest_.contents_.size() - bytes); - } - - void FixChecksum(int header_offset, int len) { - // Compute crc of type/len/data - uint32_t crc = crc32c::Value(&dest_.contents_[header_offset+6], 1 + len); - crc = crc32c::Mask(crc); - EncodeFixed32(&dest_.contents_[header_offset], crc); - } - - void ForceError() { - source_.force_error_ = true; - } - - size_t DroppedBytes() const { - return report_.dropped_bytes_; - } - - std::string ReportMessage() const { - return report_.message_; - } - - // Returns OK iff recorded error message contains "msg" - std::string MatchError(const std::string& msg) const { - if (report_.message_.find(msg) == std::string::npos) { - return report_.message_; - } else { - return "OK"; - } - } - - void WriteInitialOffsetLog() { - for (int i = 0; i < 4; i++) { - std::string record(initial_offset_record_sizes_[i], - static_cast('a' + i)); - Write(record); - } - } - - void CheckOffsetPastEndReturnsNoRecords(uint64_t offset_past_end) { - WriteInitialOffsetLog(); - reading_ = true; - source_.contents_ = Slice(dest_.contents_); - Reader* offset_reader = new Reader(&source_, &report_, true/*checksum*/, - WrittenBytes() + offset_past_end); - Slice record; - std::string scratch; - ASSERT_TRUE(!offset_reader->ReadRecord(&record, &scratch)); - delete offset_reader; - } - - void CheckInitialOffsetRecord(uint64_t initial_offset, - int expected_record_offset) { - WriteInitialOffsetLog(); - reading_ = true; - source_.contents_ = Slice(dest_.contents_); - Reader* offset_reader = new Reader(&source_, &report_, true/*checksum*/, - initial_offset); - Slice record; - std::string scratch; - ASSERT_TRUE(offset_reader->ReadRecord(&record, &scratch)); - ASSERT_EQ(initial_offset_record_sizes_[expected_record_offset], - record.size()); - ASSERT_EQ(initial_offset_last_record_offsets_[expected_record_offset], - offset_reader->LastRecordOffset()); - ASSERT_EQ((char)('a' + expected_record_offset), record.data()[0]); - delete offset_reader; - } - -}; - -size_t LogTest::initial_offset_record_sizes_[] = - {10000, // Two sizable records in first block - 10000, - 2 * log::kBlockSize - 1000, // Span three blocks - 1}; - -uint64_t LogTest::initial_offset_last_record_offsets_[] = - {0, - kHeaderSize + 10000, - 2 * (kHeaderSize + 10000), - 2 * (kHeaderSize + 10000) + - (2 * log::kBlockSize - 1000) + 3 * kHeaderSize}; - - -TEST(LogTest, Empty) { - ASSERT_EQ("EOF", Read()); -} - -TEST(LogTest, ReadWrite) { - Write("foo"); - Write("bar"); - Write(""); - Write("xxxx"); - ASSERT_EQ("foo", Read()); - ASSERT_EQ("bar", Read()); - ASSERT_EQ("", Read()); - ASSERT_EQ("xxxx", Read()); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ("EOF", Read()); // Make sure reads at eof work -} - -TEST(LogTest, ManyBlocks) { - for (int i = 0; i < 100000; i++) { - Write(NumberString(i)); - } - for (int i = 0; i < 100000; i++) { - ASSERT_EQ(NumberString(i), Read()); - } - ASSERT_EQ("EOF", Read()); -} - -TEST(LogTest, Fragmentation) { - Write("small"); - Write(BigString("medium", 50000)); - Write(BigString("large", 100000)); - ASSERT_EQ("small", Read()); - ASSERT_EQ(BigString("medium", 50000), Read()); - ASSERT_EQ(BigString("large", 100000), Read()); - ASSERT_EQ("EOF", Read()); -} - -TEST(LogTest, MarginalTrailer) { - // Make a trailer that is exactly the same length as an empty record. - const int n = kBlockSize - 2*kHeaderSize; - Write(BigString("foo", n)); - ASSERT_EQ(kBlockSize - kHeaderSize, WrittenBytes()); - Write(""); - Write("bar"); - ASSERT_EQ(BigString("foo", n), Read()); - ASSERT_EQ("", Read()); - ASSERT_EQ("bar", Read()); - ASSERT_EQ("EOF", Read()); -} - -TEST(LogTest, MarginalTrailer2) { - // Make a trailer that is exactly the same length as an empty record. - const int n = kBlockSize - 2*kHeaderSize; - Write(BigString("foo", n)); - ASSERT_EQ(kBlockSize - kHeaderSize, WrittenBytes()); - Write("bar"); - ASSERT_EQ(BigString("foo", n), Read()); - ASSERT_EQ("bar", Read()); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(0, DroppedBytes()); - ASSERT_EQ("", ReportMessage()); -} - -TEST(LogTest, ShortTrailer) { - const int n = kBlockSize - 2*kHeaderSize + 4; - Write(BigString("foo", n)); - ASSERT_EQ(kBlockSize - kHeaderSize + 4, WrittenBytes()); - Write(""); - Write("bar"); - ASSERT_EQ(BigString("foo", n), Read()); - ASSERT_EQ("", Read()); - ASSERT_EQ("bar", Read()); - ASSERT_EQ("EOF", Read()); -} - -TEST(LogTest, AlignedEof) { - const int n = kBlockSize - 2*kHeaderSize + 4; - Write(BigString("foo", n)); - ASSERT_EQ(kBlockSize - kHeaderSize + 4, WrittenBytes()); - ASSERT_EQ(BigString("foo", n), Read()); - ASSERT_EQ("EOF", Read()); -} - -TEST(LogTest, RandomRead) { - const int N = 500; - Random write_rnd(301); - for (int i = 0; i < N; i++) { - Write(RandomSkewedString(i, &write_rnd)); - } - Random read_rnd(301); - for (int i = 0; i < N; i++) { - ASSERT_EQ(RandomSkewedString(i, &read_rnd), Read()); - } - ASSERT_EQ("EOF", Read()); -} - -// Tests of all the error paths in log_reader.cc follow: - -TEST(LogTest, ReadError) { - Write("foo"); - ForceError(); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(kBlockSize, DroppedBytes()); - ASSERT_EQ("OK", MatchError("read error")); -} - -TEST(LogTest, BadRecordType) { - Write("foo"); - // Type is stored in header[6] - IncrementByte(6, 100); - FixChecksum(0, 3); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(3, DroppedBytes()); - ASSERT_EQ("OK", MatchError("unknown record type")); -} - -TEST(LogTest, TruncatedTrailingRecordIsIgnored) { - Write("foo"); - ShrinkSize(4); // Drop all payload as well as a header byte - ASSERT_EQ("EOF", Read()); - // Truncated last record is ignored, not treated as an error. - ASSERT_EQ(0, DroppedBytes()); - ASSERT_EQ("", ReportMessage()); -} - -TEST(LogTest, BadLength) { - const int kPayloadSize = kBlockSize - kHeaderSize; - Write(BigString("bar", kPayloadSize)); - Write("foo"); - // Least significant size byte is stored in header[4]. - IncrementByte(4, 1); - ASSERT_EQ("foo", Read()); - ASSERT_EQ(kBlockSize, DroppedBytes()); - ASSERT_EQ("OK", MatchError("bad record length")); -} - -TEST(LogTest, BadLengthAtEndIsIgnored) { - Write("foo"); - ShrinkSize(1); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(0, DroppedBytes()); - ASSERT_EQ("", ReportMessage()); -} - -TEST(LogTest, ChecksumMismatch) { - Write("foo"); - IncrementByte(0, 10); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(10, DroppedBytes()); - ASSERT_EQ("OK", MatchError("checksum mismatch")); -} - -TEST(LogTest, UnexpectedMiddleType) { - Write("foo"); - SetByte(6, kMiddleType); - FixChecksum(0, 3); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(3, DroppedBytes()); - ASSERT_EQ("OK", MatchError("missing start")); -} - -TEST(LogTest, UnexpectedLastType) { - Write("foo"); - SetByte(6, kLastType); - FixChecksum(0, 3); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(3, DroppedBytes()); - ASSERT_EQ("OK", MatchError("missing start")); -} - -TEST(LogTest, UnexpectedFullType) { - Write("foo"); - Write("bar"); - SetByte(6, kFirstType); - FixChecksum(0, 3); - ASSERT_EQ("bar", Read()); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(3, DroppedBytes()); - ASSERT_EQ("OK", MatchError("partial record without end")); -} - -TEST(LogTest, UnexpectedFirstType) { - Write("foo"); - Write(BigString("bar", 100000)); - SetByte(6, kFirstType); - FixChecksum(0, 3); - ASSERT_EQ(BigString("bar", 100000), Read()); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ(3, DroppedBytes()); - ASSERT_EQ("OK", MatchError("partial record without end")); -} - -TEST(LogTest, MissingLastIsIgnored) { - Write(BigString("bar", kBlockSize)); - // Remove the LAST block, including header. - ShrinkSize(14); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ("", ReportMessage()); - ASSERT_EQ(0, DroppedBytes()); -} - -TEST(LogTest, PartialLastIsIgnored) { - Write(BigString("bar", kBlockSize)); - // Cause a bad record length in the LAST block. - ShrinkSize(1); - ASSERT_EQ("EOF", Read()); - ASSERT_EQ("", ReportMessage()); - ASSERT_EQ(0, DroppedBytes()); -} - -TEST(LogTest, ErrorJoinsRecords) { - // Consider two fragmented records: - // first(R1) last(R1) first(R2) last(R2) - // where the middle two fragments disappear. We do not want - // first(R1),last(R2) to get joined and returned as a valid record. - - // Write records that span two blocks - Write(BigString("foo", kBlockSize)); - Write(BigString("bar", kBlockSize)); - Write("correct"); - - // Wipe the middle block - for (int offset = kBlockSize; offset < 2*kBlockSize; offset++) { - SetByte(offset, 'x'); - } - - ASSERT_EQ("correct", Read()); - ASSERT_EQ("EOF", Read()); - const size_t dropped = DroppedBytes(); - ASSERT_LE(dropped, 2*kBlockSize + 100); - ASSERT_GE(dropped, 2*kBlockSize); -} - -TEST(LogTest, ReadStart) { - CheckInitialOffsetRecord(0, 0); -} - -TEST(LogTest, ReadSecondOneOff) { - CheckInitialOffsetRecord(1, 1); -} - -TEST(LogTest, ReadSecondTenThousand) { - CheckInitialOffsetRecord(10000, 1); -} - -TEST(LogTest, ReadSecondStart) { - CheckInitialOffsetRecord(10007, 1); -} - -TEST(LogTest, ReadThirdOneOff) { - CheckInitialOffsetRecord(10008, 2); -} - -TEST(LogTest, ReadThirdStart) { - CheckInitialOffsetRecord(20014, 2); -} - -TEST(LogTest, ReadFourthOneOff) { - CheckInitialOffsetRecord(20015, 3); -} - -TEST(LogTest, ReadFourthFirstBlockTrailer) { - CheckInitialOffsetRecord(log::kBlockSize - 4, 3); -} - -TEST(LogTest, ReadFourthMiddleBlock) { - CheckInitialOffsetRecord(log::kBlockSize + 1, 3); -} - -TEST(LogTest, ReadFourthLastBlock) { - CheckInitialOffsetRecord(2 * log::kBlockSize + 1, 3); -} - -TEST(LogTest, ReadFourthStart) { - CheckInitialOffsetRecord( - 2 * (kHeaderSize + 1000) + (2 * log::kBlockSize - 1000) + 3 * kHeaderSize, - 3); -} - -TEST(LogTest, ReadEnd) { - CheckOffsetPastEndReturnsNoRecords(0); -} - -TEST(LogTest, ReadPastEnd) { - CheckOffsetPastEndReturnsNoRecords(5); -} - -} // namespace log -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/log_writer.cc b/leveldb-1.18/db/log_writer.cc deleted file mode 100644 index 2da99ac..0000000 --- a/leveldb-1.18/db/log_writer.cc +++ /dev/null @@ -1,103 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/log_writer.h" - -#include -#include "leveldb/env.h" -#include "util/coding.h" -#include "util/crc32c.h" - -namespace leveldb { -namespace log { - -Writer::Writer(WritableFile* dest) - : dest_(dest), - block_offset_(0) { - for (int i = 0; i <= kMaxRecordType; i++) { - char t = static_cast(i); - type_crc_[i] = crc32c::Value(&t, 1); - } -} - -Writer::~Writer() { -} - -Status Writer::AddRecord(const Slice& slice) { - const char* ptr = slice.data(); - size_t left = slice.size(); - - // Fragment the record if necessary and emit it. Note that if slice - // is empty, we still want to iterate once to emit a single - // zero-length record - Status s; - bool begin = true; - do { - const int leftover = kBlockSize - block_offset_; - assert(leftover >= 0); - if (leftover < kHeaderSize) { - // Switch to a new block - if (leftover > 0) { - // Fill the trailer (literal below relies on kHeaderSize being 7) - assert(kHeaderSize == 7); - dest_->Append(Slice("\x00\x00\x00\x00\x00\x00", leftover)); - } - block_offset_ = 0; - } - - // Invariant: we never leave < kHeaderSize bytes in a block. - assert(kBlockSize - block_offset_ - kHeaderSize >= 0); - - const size_t avail = kBlockSize - block_offset_ - kHeaderSize; - const size_t fragment_length = (left < avail) ? left : avail; - - RecordType type; - const bool end = (left == fragment_length); - if (begin && end) { - type = kFullType; - } else if (begin) { - type = kFirstType; - } else if (end) { - type = kLastType; - } else { - type = kMiddleType; - } - - s = EmitPhysicalRecord(type, ptr, fragment_length); - ptr += fragment_length; - left -= fragment_length; - begin = false; - } while (s.ok() && left > 0); - return s; -} - -Status Writer::EmitPhysicalRecord(RecordType t, const char* ptr, size_t n) { - assert(n <= 0xffff); // Must fit in two bytes - assert(block_offset_ + kHeaderSize + n <= kBlockSize); - - // Format the header - char buf[kHeaderSize]; - buf[4] = static_cast(n & 0xff); - buf[5] = static_cast(n >> 8); - buf[6] = static_cast(t); - - // Compute the crc of the record type and the payload. - uint32_t crc = crc32c::Extend(type_crc_[t], ptr, n); - crc = crc32c::Mask(crc); // Adjust for storage - EncodeFixed32(buf, crc); - - // Write the header and the payload - Status s = dest_->Append(Slice(buf, kHeaderSize)); - if (s.ok()) { - s = dest_->Append(Slice(ptr, n)); - if (s.ok()) { - s = dest_->Flush(); - } - } - block_offset_ += kHeaderSize + n; - return s; -} - -} // namespace log -} // namespace leveldb diff --git a/leveldb-1.18/db/log_writer.h b/leveldb-1.18/db/log_writer.h deleted file mode 100644 index a3a954d..0000000 --- a/leveldb-1.18/db/log_writer.h +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_LOG_WRITER_H_ -#define STORAGE_LEVELDB_DB_LOG_WRITER_H_ - -#include -#include "db/log_format.h" -#include "leveldb/slice.h" -#include "leveldb/status.h" - -namespace leveldb { - -class WritableFile; - -namespace log { - -class Writer { - public: - // Create a writer that will append data to "*dest". - // "*dest" must be initially empty. - // "*dest" must remain live while this Writer is in use. - explicit Writer(WritableFile* dest); - ~Writer(); - - Status AddRecord(const Slice& slice); - - private: - WritableFile* dest_; - int block_offset_; // Current offset in block - - // crc32c values for all supported record types. These are - // pre-computed to reduce the overhead of computing the crc of the - // record type stored in the header. - uint32_t type_crc_[kMaxRecordType + 1]; - - Status EmitPhysicalRecord(RecordType type, const char* ptr, size_t length); - - // No copying allowed - Writer(const Writer&); - void operator=(const Writer&); -}; - -} // namespace log -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_LOG_WRITER_H_ diff --git a/leveldb-1.18/db/memtable.cc b/leveldb-1.18/db/memtable.cc deleted file mode 100644 index bfec0a7..0000000 --- a/leveldb-1.18/db/memtable.cc +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/memtable.h" -#include "db/dbformat.h" -#include "leveldb/comparator.h" -#include "leveldb/env.h" -#include "leveldb/iterator.h" -#include "util/coding.h" - -namespace leveldb { - -static Slice GetLengthPrefixedSlice(const char* data) { - uint32_t len; - const char* p = data; - p = GetVarint32Ptr(p, p + 5, &len); // +5: we assume "p" is not corrupted - return Slice(p, len); -} - -MemTable::MemTable(const InternalKeyComparator& cmp) - : comparator_(cmp), - refs_(0), - table_(comparator_, &arena_) { -} - -MemTable::~MemTable() { - assert(refs_ == 0); -} - -size_t MemTable::ApproximateMemoryUsage() { return arena_.MemoryUsage(); } - -int MemTable::KeyComparator::operator()(const char* aptr, const char* bptr) - const { - // Internal keys are encoded as length-prefixed strings. - Slice a = GetLengthPrefixedSlice(aptr); - Slice b = GetLengthPrefixedSlice(bptr); - return comparator.Compare(a, b); -} - -// Encode a suitable internal key target for "target" and return it. -// Uses *scratch as scratch space, and the returned pointer will point -// into this scratch space. -static const char* EncodeKey(std::string* scratch, const Slice& target) { - scratch->clear(); - PutVarint32(scratch, target.size()); - scratch->append(target.data(), target.size()); - return scratch->data(); -} - -class MemTableIterator: public Iterator { - public: - explicit MemTableIterator(MemTable::Table* table) : iter_(table) { } - - virtual bool Valid() const { return iter_.Valid(); } - virtual void Seek(const Slice& k) { iter_.Seek(EncodeKey(&tmp_, k)); } - virtual void SeekToFirst() { iter_.SeekToFirst(); } - virtual void SeekToLast() { iter_.SeekToLast(); } - virtual void Next() { iter_.Next(); } - virtual void Prev() { iter_.Prev(); } - virtual Slice key() const { return GetLengthPrefixedSlice(iter_.key()); } - virtual Slice value() const { - Slice key_slice = GetLengthPrefixedSlice(iter_.key()); - return GetLengthPrefixedSlice(key_slice.data() + key_slice.size()); - } - - virtual Status status() const { return Status::OK(); } - - private: - MemTable::Table::Iterator iter_; - std::string tmp_; // For passing to EncodeKey - - // No copying allowed - MemTableIterator(const MemTableIterator&); - void operator=(const MemTableIterator&); -}; - -Iterator* MemTable::NewIterator() { - return new MemTableIterator(&table_); -} - -void MemTable::Add(SequenceNumber s, ValueType type, - const Slice& key, - const Slice& value) { - // Format of an entry is concatenation of: - // key_size : varint32 of internal_key.size() - // key bytes : char[internal_key.size()] - // value_size : varint32 of value.size() - // value bytes : char[value.size()] - size_t key_size = key.size(); - size_t val_size = value.size(); - size_t internal_key_size = key_size + 8; - const size_t encoded_len = - VarintLength(internal_key_size) + internal_key_size + - VarintLength(val_size) + val_size; - char* buf = arena_.Allocate(encoded_len); - char* p = EncodeVarint32(buf, internal_key_size); - memcpy(p, key.data(), key_size); - p += key_size; - EncodeFixed64(p, (s << 8) | type); - p += 8; - p = EncodeVarint32(p, val_size); - memcpy(p, value.data(), val_size); - assert((p + val_size) - buf == encoded_len); - table_.Insert(buf); -} - -bool MemTable::Get(const LookupKey& key, std::string* value, Status* s) { - Slice memkey = key.memtable_key(); - Table::Iterator iter(&table_); - iter.Seek(memkey.data()); - if (iter.Valid()) { - // entry format is: - // klength varint32 - // userkey char[klength] - // tag uint64 - // vlength varint32 - // value char[vlength] - // Check that it belongs to same user key. We do not check the - // sequence number since the Seek() call above should have skipped - // all entries with overly large sequence numbers. - const char* entry = iter.key(); - uint32_t key_length; - const char* key_ptr = GetVarint32Ptr(entry, entry+5, &key_length); - if (comparator_.comparator.user_comparator()->Compare( - Slice(key_ptr, key_length - 8), - key.user_key()) == 0) { - // Correct user key - const uint64_t tag = DecodeFixed64(key_ptr + key_length - 8); - switch (static_cast(tag & 0xff)) { - case kTypeValue: { - Slice v = GetLengthPrefixedSlice(key_ptr + key_length); - value->assign(v.data(), v.size()); - return true; - } - case kTypeDeletion: - *s = Status::NotFound(Slice()); - return true; - } - } - } - return false; -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/memtable.h b/leveldb-1.18/db/memtable.h deleted file mode 100644 index 92e90bb..0000000 --- a/leveldb-1.18/db/memtable.h +++ /dev/null @@ -1,91 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_MEMTABLE_H_ -#define STORAGE_LEVELDB_DB_MEMTABLE_H_ - -#include -#include "leveldb/db.h" -#include "db/dbformat.h" -#include "db/skiplist.h" -#include "util/arena.h" - -namespace leveldb { - -class InternalKeyComparator; -class Mutex; -class MemTableIterator; - -class MemTable { - public: - // MemTables are reference counted. The initial reference count - // is zero and the caller must call Ref() at least once. - explicit MemTable(const InternalKeyComparator& comparator); - - // Increase reference count. - void Ref() { ++refs_; } - - // Drop reference count. Delete if no more references exist. - void Unref() { - --refs_; - assert(refs_ >= 0); - if (refs_ <= 0) { - delete this; - } - } - - // Returns an estimate of the number of bytes of data in use by this - // data structure. - // - // REQUIRES: external synchronization to prevent simultaneous - // operations on the same MemTable. - size_t ApproximateMemoryUsage(); - - // Return an iterator that yields the contents of the memtable. - // - // The caller must ensure that the underlying MemTable remains live - // while the returned iterator is live. The keys returned by this - // iterator are internal keys encoded by AppendInternalKey in the - // db/format.{h,cc} module. - Iterator* NewIterator(); - - // Add an entry into memtable that maps key to value at the - // specified sequence number and with the specified type. - // Typically value will be empty if type==kTypeDeletion. - void Add(SequenceNumber seq, ValueType type, - const Slice& key, - const Slice& value); - - // If memtable contains a value for key, store it in *value and return true. - // If memtable contains a deletion for key, store a NotFound() error - // in *status and return true. - // Else, return false. - bool Get(const LookupKey& key, std::string* value, Status* s); - - private: - ~MemTable(); // Private since only Unref() should be used to delete it - - struct KeyComparator { - const InternalKeyComparator comparator; - explicit KeyComparator(const InternalKeyComparator& c) : comparator(c) { } - int operator()(const char* a, const char* b) const; - }; - friend class MemTableIterator; - friend class MemTableBackwardIterator; - - typedef SkipList Table; - - KeyComparator comparator_; - int refs_; - Arena arena_; - Table table_; - - // No copying allowed - MemTable(const MemTable&); - void operator=(const MemTable&); -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_MEMTABLE_H_ diff --git a/leveldb-1.18/db/repair.cc b/leveldb-1.18/db/repair.cc deleted file mode 100644 index 4cd4bb0..0000000 --- a/leveldb-1.18/db/repair.cc +++ /dev/null @@ -1,461 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// We recover the contents of the descriptor from the other files we find. -// (1) Any log files are first converted to tables -// (2) We scan every table to compute -// (a) smallest/largest for the table -// (b) largest sequence number in the table -// (3) We generate descriptor contents: -// - log number is set to zero -// - next-file-number is set to 1 + largest file number we found -// - last-sequence-number is set to largest sequence# found across -// all tables (see 2c) -// - compaction pointers are cleared -// - every table file is added at level 0 -// -// Possible optimization 1: -// (a) Compute total size and use to pick appropriate max-level M -// (b) Sort tables by largest sequence# in the table -// (c) For each table: if it overlaps earlier table, place in level-0, -// else place in level-M. -// Possible optimization 2: -// Store per-table metadata (smallest, largest, largest-seq#, ...) -// in the table's meta section to speed up ScanTable. - -#include "db/builder.h" -#include "db/db_impl.h" -#include "db/dbformat.h" -#include "db/filename.h" -#include "db/log_reader.h" -#include "db/log_writer.h" -#include "db/memtable.h" -#include "db/table_cache.h" -#include "db/version_edit.h" -#include "db/write_batch_internal.h" -#include "leveldb/comparator.h" -#include "leveldb/db.h" -#include "leveldb/env.h" - -namespace leveldb { - -namespace { - -class Repairer { - public: - Repairer(const std::string& dbname, const Options& options) - : dbname_(dbname), - env_(options.env), - icmp_(options.comparator), - ipolicy_(options.filter_policy), - options_(SanitizeOptions(dbname, &icmp_, &ipolicy_, options)), - owns_info_log_(options_.info_log != options.info_log), - owns_cache_(options_.block_cache != options.block_cache), - next_file_number_(1) { - // TableCache can be small since we expect each table to be opened once. - table_cache_ = new TableCache(dbname_, &options_, 10); - } - - ~Repairer() { - delete table_cache_; - if (owns_info_log_) { - delete options_.info_log; - } - if (owns_cache_) { - delete options_.block_cache; - } - } - - Status Run() { - Status status = FindFiles(); - if (status.ok()) { - ConvertLogFilesToTables(); - ExtractMetaData(); - status = WriteDescriptor(); - } - if (status.ok()) { - unsigned long long bytes = 0; - for (size_t i = 0; i < tables_.size(); i++) { - bytes += tables_[i].meta.file_size; - } - Log(options_.info_log, - "**** Repaired leveldb %s; " - "recovered %d files; %llu bytes. " - "Some data may have been lost. " - "****", - dbname_.c_str(), - static_cast(tables_.size()), - bytes); - } - return status; - } - - private: - struct TableInfo { - FileMetaData meta; - SequenceNumber max_sequence; - }; - - std::string const dbname_; - Env* const env_; - InternalKeyComparator const icmp_; - InternalFilterPolicy const ipolicy_; - Options const options_; - bool owns_info_log_; - bool owns_cache_; - TableCache* table_cache_; - VersionEdit edit_; - - std::vector manifests_; - std::vector table_numbers_; - std::vector logs_; - std::vector tables_; - uint64_t next_file_number_; - - Status FindFiles() { - std::vector filenames; - Status status = env_->GetChildren(dbname_, &filenames); - if (!status.ok()) { - return status; - } - if (filenames.empty()) { - return Status::IOError(dbname_, "repair found no files"); - } - - uint64_t number; - FileType type; - for (size_t i = 0; i < filenames.size(); i++) { - if (ParseFileName(filenames[i], &number, &type)) { - if (type == kDescriptorFile) { - manifests_.push_back(filenames[i]); - } else { - if (number + 1 > next_file_number_) { - next_file_number_ = number + 1; - } - if (type == kLogFile) { - logs_.push_back(number); - } else if (type == kTableFile) { - table_numbers_.push_back(number); - } else { - // Ignore other files - } - } - } - } - return status; - } - - void ConvertLogFilesToTables() { - for (size_t i = 0; i < logs_.size(); i++) { - std::string logname = LogFileName(dbname_, logs_[i]); - Status status = ConvertLogToTable(logs_[i]); - if (!status.ok()) { - Log(options_.info_log, "Log #%llu: ignoring conversion error: %s", - (unsigned long long) logs_[i], - status.ToString().c_str()); - } - ArchiveFile(logname); - } - } - - Status ConvertLogToTable(uint64_t log) { - struct LogReporter : public log::Reader::Reporter { - Env* env; - Logger* info_log; - uint64_t lognum; - virtual void Corruption(size_t bytes, const Status& s) { - // We print error messages for corruption, but continue repairing. - Log(info_log, "Log #%llu: dropping %d bytes; %s", - (unsigned long long) lognum, - static_cast(bytes), - s.ToString().c_str()); - } - }; - - // Open the log file - std::string logname = LogFileName(dbname_, log); - SequentialFile* lfile; - Status status = env_->NewSequentialFile(logname, &lfile); - if (!status.ok()) { - return status; - } - - // Create the log reader. - LogReporter reporter; - reporter.env = env_; - reporter.info_log = options_.info_log; - reporter.lognum = log; - // We intentionally make log::Reader do checksumming so that - // corruptions cause entire commits to be skipped instead of - // propagating bad information (like overly large sequence - // numbers). - log::Reader reader(lfile, &reporter, false/*do not checksum*/, - 0/*initial_offset*/); - - // Read all the records and add to a memtable - std::string scratch; - Slice record; - WriteBatch batch; - MemTable* mem = new MemTable(icmp_); - mem->Ref(); - int counter = 0; - while (reader.ReadRecord(&record, &scratch)) { - if (record.size() < 12) { - reporter.Corruption( - record.size(), Status::Corruption("log record too small")); - continue; - } - WriteBatchInternal::SetContents(&batch, record); - status = WriteBatchInternal::InsertInto(&batch, mem); - if (status.ok()) { - counter += WriteBatchInternal::Count(&batch); - } else { - Log(options_.info_log, "Log #%llu: ignoring %s", - (unsigned long long) log, - status.ToString().c_str()); - status = Status::OK(); // Keep going with rest of file - } - } - delete lfile; - - // Do not record a version edit for this conversion to a Table - // since ExtractMetaData() will also generate edits. - FileMetaData meta; - meta.number = next_file_number_++; - Iterator* iter = mem->NewIterator(); - status = BuildTable(dbname_, env_, options_, table_cache_, iter, &meta); - delete iter; - mem->Unref(); - mem = NULL; - if (status.ok()) { - if (meta.file_size > 0) { - table_numbers_.push_back(meta.number); - } - } - Log(options_.info_log, "Log #%llu: %d ops saved to Table #%llu %s", - (unsigned long long) log, - counter, - (unsigned long long) meta.number, - status.ToString().c_str()); - return status; - } - - void ExtractMetaData() { - for (size_t i = 0; i < table_numbers_.size(); i++) { - ScanTable(table_numbers_[i]); - } - } - - Iterator* NewTableIterator(const FileMetaData& meta) { - // Same as compaction iterators: if paranoid_checks are on, turn - // on checksum verification. - ReadOptions r; - r.verify_checksums = options_.paranoid_checks; - return table_cache_->NewIterator(r, meta.number, meta.file_size); - } - - void ScanTable(uint64_t number) { - TableInfo t; - t.meta.number = number; - std::string fname = TableFileName(dbname_, number); - Status status = env_->GetFileSize(fname, &t.meta.file_size); - if (!status.ok()) { - // Try alternate file name. - fname = SSTTableFileName(dbname_, number); - Status s2 = env_->GetFileSize(fname, &t.meta.file_size); - if (s2.ok()) { - status = Status::OK(); - } - } - if (!status.ok()) { - ArchiveFile(TableFileName(dbname_, number)); - ArchiveFile(SSTTableFileName(dbname_, number)); - Log(options_.info_log, "Table #%llu: dropped: %s", - (unsigned long long) t.meta.number, - status.ToString().c_str()); - return; - } - - // Extract metadata by scanning through table. - int counter = 0; - Iterator* iter = NewTableIterator(t.meta); - bool empty = true; - ParsedInternalKey parsed; - t.max_sequence = 0; - for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { - Slice key = iter->key(); - if (!ParseInternalKey(key, &parsed)) { - Log(options_.info_log, "Table #%llu: unparsable key %s", - (unsigned long long) t.meta.number, - EscapeString(key).c_str()); - continue; - } - - counter++; - if (empty) { - empty = false; - t.meta.smallest.DecodeFrom(key); - } - t.meta.largest.DecodeFrom(key); - if (parsed.sequence > t.max_sequence) { - t.max_sequence = parsed.sequence; - } - } - if (!iter->status().ok()) { - status = iter->status(); - } - delete iter; - Log(options_.info_log, "Table #%llu: %d entries %s", - (unsigned long long) t.meta.number, - counter, - status.ToString().c_str()); - - if (status.ok()) { - tables_.push_back(t); - } else { - RepairTable(fname, t); // RepairTable archives input file. - } - } - - void RepairTable(const std::string& src, TableInfo t) { - // We will copy src contents to a new table and then rename the - // new table over the source. - - // Create builder. - std::string copy = TableFileName(dbname_, next_file_number_++); - WritableFile* file; - Status s = env_->NewWritableFile(copy, &file); - if (!s.ok()) { - return; - } - TableBuilder* builder = new TableBuilder(options_, file); - - // Copy data. - Iterator* iter = NewTableIterator(t.meta); - int counter = 0; - for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { - builder->Add(iter->key(), iter->value()); - counter++; - } - delete iter; - - ArchiveFile(src); - if (counter == 0) { - builder->Abandon(); // Nothing to save - } else { - s = builder->Finish(); - if (s.ok()) { - t.meta.file_size = builder->FileSize(); - } - } - delete builder; - builder = NULL; - - if (s.ok()) { - s = file->Close(); - } - delete file; - file = NULL; - - if (counter > 0 && s.ok()) { - std::string orig = TableFileName(dbname_, t.meta.number); - s = env_->RenameFile(copy, orig); - if (s.ok()) { - Log(options_.info_log, "Table #%llu: %d entries repaired", - (unsigned long long) t.meta.number, counter); - tables_.push_back(t); - } - } - if (!s.ok()) { - env_->DeleteFile(copy); - } - } - - Status WriteDescriptor() { - std::string tmp = TempFileName(dbname_, 1); - WritableFile* file; - Status status = env_->NewWritableFile(tmp, &file); - if (!status.ok()) { - return status; - } - - SequenceNumber max_sequence = 0; - for (size_t i = 0; i < tables_.size(); i++) { - if (max_sequence < tables_[i].max_sequence) { - max_sequence = tables_[i].max_sequence; - } - } - - edit_.SetComparatorName(icmp_.user_comparator()->Name()); - edit_.SetLogNumber(0); - edit_.SetNextFile(next_file_number_); - edit_.SetLastSequence(max_sequence); - - for (size_t i = 0; i < tables_.size(); i++) { - // TODO(opt): separate out into multiple levels - const TableInfo& t = tables_[i]; - edit_.AddFile(0, t.meta.number, t.meta.file_size, - t.meta.smallest, t.meta.largest); - } - - //fprintf(stderr, "NewDescriptor:\n%s\n", edit_.DebugString().c_str()); - { - log::Writer log(file); - std::string record; - edit_.EncodeTo(&record); - status = log.AddRecord(record); - } - if (status.ok()) { - status = file->Close(); - } - delete file; - file = NULL; - - if (!status.ok()) { - env_->DeleteFile(tmp); - } else { - // Discard older manifests - for (size_t i = 0; i < manifests_.size(); i++) { - ArchiveFile(dbname_ + "/" + manifests_[i]); - } - - // Install new manifest - status = env_->RenameFile(tmp, DescriptorFileName(dbname_, 1)); - if (status.ok()) { - status = SetCurrentFile(env_, dbname_, 1); - } else { - env_->DeleteFile(tmp); - } - } - return status; - } - - void ArchiveFile(const std::string& fname) { - // Move into another directory. E.g., for - // dir/foo - // rename to - // dir/lost/foo - const char* slash = strrchr(fname.c_str(), '/'); - std::string new_dir; - if (slash != NULL) { - new_dir.assign(fname.data(), slash - fname.data()); - } - new_dir.append("/lost"); - env_->CreateDir(new_dir); // Ignore error - std::string new_file = new_dir; - new_file.append("/"); - new_file.append((slash == NULL) ? fname.c_str() : slash + 1); - Status s = env_->RenameFile(fname, new_file); - Log(options_.info_log, "Archiving %s: %s\n", - fname.c_str(), s.ToString().c_str()); - } -}; -} // namespace - -Status RepairDB(const std::string& dbname, const Options& options) { - Repairer repairer(dbname, options); - return repairer.Run(); -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/skiplist.h b/leveldb-1.18/db/skiplist.h deleted file mode 100644 index ed8b092..0000000 --- a/leveldb-1.18/db/skiplist.h +++ /dev/null @@ -1,384 +0,0 @@ -#ifndef STORAGE_LEVELDB_DB_SKIPLIST_H_ -#define STORAGE_LEVELDB_DB_SKIPLIST_H_ - -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Thread safety -// ------------- -// -// Writes require external synchronization, most likely a mutex. -// Reads require a guarantee that the SkipList will not be destroyed -// while the read is in progress. Apart from that, reads progress -// without any internal locking or synchronization. -// -// Invariants: -// -// (1) Allocated nodes are never deleted until the SkipList is -// destroyed. This is trivially guaranteed by the code since we -// never delete any skip list nodes. -// -// (2) The contents of a Node except for the next/prev pointers are -// immutable after the Node has been linked into the SkipList. -// Only Insert() modifies the list, and it is careful to initialize -// a node and use release-stores to publish the nodes in one or -// more lists. -// -// ... prev vs. next pointer ordering ... - -#include -#include -#include "port/port.h" -#include "util/arena.h" -#include "util/random.h" - -namespace leveldb { - -class Arena; - -template -class SkipList { - private: - struct Node; - - public: - // Create a new SkipList object that will use "cmp" for comparing keys, - // and will allocate memory using "*arena". Objects allocated in the arena - // must remain allocated for the lifetime of the skiplist object. - explicit SkipList(Comparator cmp, Arena* arena); - - // Insert key into the list. - // REQUIRES: nothing that compares equal to key is currently in the list. - void Insert(const Key& key); - - // Returns true iff an entry that compares equal to key is in the list. - bool Contains(const Key& key) const; - - // Iteration over the contents of a skip list - class Iterator { - public: - // Initialize an iterator over the specified list. - // The returned iterator is not valid. - explicit Iterator(const SkipList* list); - - // Returns true iff the iterator is positioned at a valid node. - bool Valid() const; - - // Returns the key at the current position. - // REQUIRES: Valid() - const Key& key() const; - - // Advances to the next position. - // REQUIRES: Valid() - void Next(); - - // Advances to the previous position. - // REQUIRES: Valid() - void Prev(); - - // Advance to the first entry with a key >= target - void Seek(const Key& target); - - // Position at the first entry in list. - // Final state of iterator is Valid() iff list is not empty. - void SeekToFirst(); - - // Position at the last entry in list. - // Final state of iterator is Valid() iff list is not empty. - void SeekToLast(); - - private: - const SkipList* list_; - Node* node_; - // Intentionally copyable - }; - - private: - enum { kMaxHeight = 12 }; - - // Immutable after construction - Comparator const compare_; - Arena* const arena_; // Arena used for allocations of nodes - - Node* const head_; - - // Modified only by Insert(). Read racily by readers, but stale - // values are ok. - port::AtomicPointer max_height_; // Height of the entire list - - inline int GetMaxHeight() const { - return static_cast( - reinterpret_cast(max_height_.NoBarrier_Load())); - } - - // Read/written only by Insert(). - Random rnd_; - - Node* NewNode(const Key& key, int height); - int RandomHeight(); - bool Equal(const Key& a, const Key& b) const { return (compare_(a, b) == 0); } - - // Return true if key is greater than the data stored in "n" - bool KeyIsAfterNode(const Key& key, Node* n) const; - - // Return the earliest node that comes at or after key. - // Return NULL if there is no such node. - // - // If prev is non-NULL, fills prev[level] with pointer to previous - // node at "level" for every level in [0..max_height_-1]. - Node* FindGreaterOrEqual(const Key& key, Node** prev) const; - - // Return the latest node with a key < key. - // Return head_ if there is no such node. - Node* FindLessThan(const Key& key) const; - - // Return the last node in the list. - // Return head_ if list is empty. - Node* FindLast() const; - - // No copying allowed - SkipList(const SkipList&); - void operator=(const SkipList&); -}; - -// Implementation details follow -template -struct SkipList::Node { - explicit Node(const Key& k) : key(k) { } - - Key const key; - - // Accessors/mutators for links. Wrapped in methods so we can - // add the appropriate barriers as necessary. - Node* Next(int n) { - assert(n >= 0); - // Use an 'acquire load' so that we observe a fully initialized - // version of the returned Node. - return reinterpret_cast(next_[n].Acquire_Load()); - } - void SetNext(int n, Node* x) { - assert(n >= 0); - // Use a 'release store' so that anybody who reads through this - // pointer observes a fully initialized version of the inserted node. - next_[n].Release_Store(x); - } - - // No-barrier variants that can be safely used in a few locations. - Node* NoBarrier_Next(int n) { - assert(n >= 0); - return reinterpret_cast(next_[n].NoBarrier_Load()); - } - void NoBarrier_SetNext(int n, Node* x) { - assert(n >= 0); - next_[n].NoBarrier_Store(x); - } - - private: - // Array of length equal to the node height. next_[0] is lowest level link. - port::AtomicPointer next_[1]; -}; - -template -typename SkipList::Node* -SkipList::NewNode(const Key& key, int height) { - char* mem = arena_->AllocateAligned( - sizeof(Node) + sizeof(port::AtomicPointer) * (height - 1)); - return new (mem) Node(key); -} - -template -inline SkipList::Iterator::Iterator(const SkipList* list) { - list_ = list; - node_ = NULL; -} - -template -inline bool SkipList::Iterator::Valid() const { - return node_ != NULL; -} - -template -inline const Key& SkipList::Iterator::key() const { - assert(Valid()); - return node_->key; -} - -template -inline void SkipList::Iterator::Next() { - assert(Valid()); - node_ = node_->Next(0); -} - -template -inline void SkipList::Iterator::Prev() { - // Instead of using explicit "prev" links, we just search for the - // last node that falls before key. - assert(Valid()); - node_ = list_->FindLessThan(node_->key); - if (node_ == list_->head_) { - node_ = NULL; - } -} - -template -inline void SkipList::Iterator::Seek(const Key& target) { - node_ = list_->FindGreaterOrEqual(target, NULL); -} - -template -inline void SkipList::Iterator::SeekToFirst() { - node_ = list_->head_->Next(0); -} - -template -inline void SkipList::Iterator::SeekToLast() { - node_ = list_->FindLast(); - if (node_ == list_->head_) { - node_ = NULL; - } -} - -template -int SkipList::RandomHeight() { - // Increase height with probability 1 in kBranching - static const unsigned int kBranching = 4; - int height = 1; - while (height < kMaxHeight && ((rnd_.Next() % kBranching) == 0)) { - height++; - } - assert(height > 0); - assert(height <= kMaxHeight); - return height; -} - -template -bool SkipList::KeyIsAfterNode(const Key& key, Node* n) const { - // NULL n is considered infinite - return (n != NULL) && (compare_(n->key, key) < 0); -} - -template -typename SkipList::Node* SkipList::FindGreaterOrEqual(const Key& key, Node** prev) - const { - Node* x = head_; - int level = GetMaxHeight() - 1; - while (true) { - Node* next = x->Next(level); - if (KeyIsAfterNode(key, next)) { - // Keep searching in this list - x = next; - } else { - if (prev != NULL) prev[level] = x; - if (level == 0) { - return next; - } else { - // Switch to next list - level--; - } - } - } -} - -template -typename SkipList::Node* -SkipList::FindLessThan(const Key& key) const { - Node* x = head_; - int level = GetMaxHeight() - 1; - while (true) { - assert(x == head_ || compare_(x->key, key) < 0); - Node* next = x->Next(level); - if (next == NULL || compare_(next->key, key) >= 0) { - if (level == 0) { - return x; - } else { - // Switch to next list - level--; - } - } else { - x = next; - } - } -} - -template -typename SkipList::Node* SkipList::FindLast() - const { - Node* x = head_; - int level = GetMaxHeight() - 1; - while (true) { - Node* next = x->Next(level); - if (next == NULL) { - if (level == 0) { - return x; - } else { - // Switch to next list - level--; - } - } else { - x = next; - } - } -} - -template -SkipList::SkipList(Comparator cmp, Arena* arena) - : compare_(cmp), - arena_(arena), - head_(NewNode(0 /* any key will do */, kMaxHeight)), - max_height_(reinterpret_cast(1)), - rnd_(0xdeadbeef) { - for (int i = 0; i < kMaxHeight; i++) { - head_->SetNext(i, NULL); - } -} - -template -void SkipList::Insert(const Key& key) { - // TODO(opt): We can use a barrier-free variant of FindGreaterOrEqual() - // here since Insert() is externally synchronized. - Node* prev[kMaxHeight]; - Node* x = FindGreaterOrEqual(key, prev); - - // Our data structure does not allow duplicate insertion - assert(x == NULL || !Equal(key, x->key)); - - int height = RandomHeight(); - if (height > GetMaxHeight()) { - for (int i = GetMaxHeight(); i < height; i++) { - prev[i] = head_; - } - //fprintf(stderr, "Change height from %d to %d\n", max_height_, height); - - // It is ok to mutate max_height_ without any synchronization - // with concurrent readers. A concurrent reader that observes - // the new value of max_height_ will see either the old value of - // new level pointers from head_ (NULL), or a new value set in - // the loop below. In the former case the reader will - // immediately drop to the next level since NULL sorts after all - // keys. In the latter case the reader will use the new node. - max_height_.NoBarrier_Store(reinterpret_cast(height)); - } - - x = NewNode(key, height); - for (int i = 0; i < height; i++) { - // NoBarrier_SetNext() suffices since we will add a barrier when - // we publish a pointer to "x" in prev[i]. - x->NoBarrier_SetNext(i, prev[i]->NoBarrier_Next(i)); - prev[i]->SetNext(i, x); - } -} - -template -bool SkipList::Contains(const Key& key) const { - Node* x = FindGreaterOrEqual(key, NULL); - if (x != NULL && Equal(key, x->key)) { - return true; - } else { - return false; - } -} - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_SKIPLIST_H_ diff --git a/leveldb-1.18/db/skiplist_test.cc b/leveldb-1.18/db/skiplist_test.cc deleted file mode 100644 index c78f4b4..0000000 --- a/leveldb-1.18/db/skiplist_test.cc +++ /dev/null @@ -1,378 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/skiplist.h" -#include -#include "leveldb/env.h" -#include "util/arena.h" -#include "util/hash.h" -#include "util/random.h" -#include "util/testharness.h" - -namespace leveldb { - -typedef uint64_t Key; - -struct Comparator { - int operator()(const Key& a, const Key& b) const { - if (a < b) { - return -1; - } else if (a > b) { - return +1; - } else { - return 0; - } - } -}; - -class SkipTest { }; - -TEST(SkipTest, Empty) { - Arena arena; - Comparator cmp; - SkipList list(cmp, &arena); - ASSERT_TRUE(!list.Contains(10)); - - SkipList::Iterator iter(&list); - ASSERT_TRUE(!iter.Valid()); - iter.SeekToFirst(); - ASSERT_TRUE(!iter.Valid()); - iter.Seek(100); - ASSERT_TRUE(!iter.Valid()); - iter.SeekToLast(); - ASSERT_TRUE(!iter.Valid()); -} - -TEST(SkipTest, InsertAndLookup) { - const int N = 2000; - const int R = 5000; - Random rnd(1000); - std::set keys; - Arena arena; - Comparator cmp; - SkipList list(cmp, &arena); - for (int i = 0; i < N; i++) { - Key key = rnd.Next() % R; - if (keys.insert(key).second) { - list.Insert(key); - } - } - - for (int i = 0; i < R; i++) { - if (list.Contains(i)) { - ASSERT_EQ(keys.count(i), 1); - } else { - ASSERT_EQ(keys.count(i), 0); - } - } - - // Simple iterator tests - { - SkipList::Iterator iter(&list); - ASSERT_TRUE(!iter.Valid()); - - iter.Seek(0); - ASSERT_TRUE(iter.Valid()); - ASSERT_EQ(*(keys.begin()), iter.key()); - - iter.SeekToFirst(); - ASSERT_TRUE(iter.Valid()); - ASSERT_EQ(*(keys.begin()), iter.key()); - - iter.SeekToLast(); - ASSERT_TRUE(iter.Valid()); - ASSERT_EQ(*(keys.rbegin()), iter.key()); - } - - // Forward iteration test - for (int i = 0; i < R; i++) { - SkipList::Iterator iter(&list); - iter.Seek(i); - - // Compare against model iterator - std::set::iterator model_iter = keys.lower_bound(i); - for (int j = 0; j < 3; j++) { - if (model_iter == keys.end()) { - ASSERT_TRUE(!iter.Valid()); - break; - } else { - ASSERT_TRUE(iter.Valid()); - ASSERT_EQ(*model_iter, iter.key()); - ++model_iter; - iter.Next(); - } - } - } - - // Backward iteration test - { - SkipList::Iterator iter(&list); - iter.SeekToLast(); - - // Compare against model iterator - for (std::set::reverse_iterator model_iter = keys.rbegin(); - model_iter != keys.rend(); - ++model_iter) { - ASSERT_TRUE(iter.Valid()); - ASSERT_EQ(*model_iter, iter.key()); - iter.Prev(); - } - ASSERT_TRUE(!iter.Valid()); - } -} - -// We want to make sure that with a single writer and multiple -// concurrent readers (with no synchronization other than when a -// reader's iterator is created), the reader always observes all the -// data that was present in the skip list when the iterator was -// constructor. Because insertions are happening concurrently, we may -// also observe new values that were inserted since the iterator was -// constructed, but we should never miss any values that were present -// at iterator construction time. -// -// We generate multi-part keys: -// -// where: -// key is in range [0..K-1] -// gen is a generation number for key -// hash is hash(key,gen) -// -// The insertion code picks a random key, sets gen to be 1 + the last -// generation number inserted for that key, and sets hash to Hash(key,gen). -// -// At the beginning of a read, we snapshot the last inserted -// generation number for each key. We then iterate, including random -// calls to Next() and Seek(). For every key we encounter, we -// check that it is either expected given the initial snapshot or has -// been concurrently added since the iterator started. -class ConcurrentTest { - private: - static const uint32_t K = 4; - - static uint64_t key(Key key) { return (key >> 40); } - static uint64_t gen(Key key) { return (key >> 8) & 0xffffffffu; } - static uint64_t hash(Key key) { return key & 0xff; } - - static uint64_t HashNumbers(uint64_t k, uint64_t g) { - uint64_t data[2] = { k, g }; - return Hash(reinterpret_cast(data), sizeof(data), 0); - } - - static Key MakeKey(uint64_t k, uint64_t g) { - assert(sizeof(Key) == sizeof(uint64_t)); - assert(k <= K); // We sometimes pass K to seek to the end of the skiplist - assert(g <= 0xffffffffu); - return ((k << 40) | (g << 8) | (HashNumbers(k, g) & 0xff)); - } - - static bool IsValidKey(Key k) { - return hash(k) == (HashNumbers(key(k), gen(k)) & 0xff); - } - - static Key RandomTarget(Random* rnd) { - switch (rnd->Next() % 10) { - case 0: - // Seek to beginning - return MakeKey(0, 0); - case 1: - // Seek to end - return MakeKey(K, 0); - default: - // Seek to middle - return MakeKey(rnd->Next() % K, 0); - } - } - - // Per-key generation - struct State { - port::AtomicPointer generation[K]; - void Set(int k, intptr_t v) { - generation[k].Release_Store(reinterpret_cast(v)); - } - intptr_t Get(int k) { - return reinterpret_cast(generation[k].Acquire_Load()); - } - - State() { - for (int k = 0; k < K; k++) { - Set(k, 0); - } - } - }; - - // Current state of the test - State current_; - - Arena arena_; - - // SkipList is not protected by mu_. We just use a single writer - // thread to modify it. - SkipList list_; - - public: - ConcurrentTest() : list_(Comparator(), &arena_) { } - - // REQUIRES: External synchronization - void WriteStep(Random* rnd) { - const uint32_t k = rnd->Next() % K; - const intptr_t g = current_.Get(k) + 1; - const Key key = MakeKey(k, g); - list_.Insert(key); - current_.Set(k, g); - } - - void ReadStep(Random* rnd) { - // Remember the initial committed state of the skiplist. - State initial_state; - for (int k = 0; k < K; k++) { - initial_state.Set(k, current_.Get(k)); - } - - Key pos = RandomTarget(rnd); - SkipList::Iterator iter(&list_); - iter.Seek(pos); - while (true) { - Key current; - if (!iter.Valid()) { - current = MakeKey(K, 0); - } else { - current = iter.key(); - ASSERT_TRUE(IsValidKey(current)) << current; - } - ASSERT_LE(pos, current) << "should not go backwards"; - - // Verify that everything in [pos,current) was not present in - // initial_state. - while (pos < current) { - ASSERT_LT(key(pos), K) << pos; - - // Note that generation 0 is never inserted, so it is ok if - // <*,0,*> is missing. - ASSERT_TRUE((gen(pos) == 0) || - (gen(pos) > initial_state.Get(key(pos))) - ) << "key: " << key(pos) - << "; gen: " << gen(pos) - << "; initgen: " - << initial_state.Get(key(pos)); - - // Advance to next key in the valid key space - if (key(pos) < key(current)) { - pos = MakeKey(key(pos) + 1, 0); - } else { - pos = MakeKey(key(pos), gen(pos) + 1); - } - } - - if (!iter.Valid()) { - break; - } - - if (rnd->Next() % 2) { - iter.Next(); - pos = MakeKey(key(pos), gen(pos) + 1); - } else { - Key new_target = RandomTarget(rnd); - if (new_target > pos) { - pos = new_target; - iter.Seek(new_target); - } - } - } - } -}; -const uint32_t ConcurrentTest::K; - -// Simple test that does single-threaded testing of the ConcurrentTest -// scaffolding. -TEST(SkipTest, ConcurrentWithoutThreads) { - ConcurrentTest test; - Random rnd(test::RandomSeed()); - for (int i = 0; i < 10000; i++) { - test.ReadStep(&rnd); - test.WriteStep(&rnd); - } -} - -class TestState { - public: - ConcurrentTest t_; - int seed_; - port::AtomicPointer quit_flag_; - - enum ReaderState { - STARTING, - RUNNING, - DONE - }; - - explicit TestState(int s) - : seed_(s), - quit_flag_(NULL), - state_(STARTING), - state_cv_(&mu_) {} - - void Wait(ReaderState s) { - mu_.Lock(); - while (state_ != s) { - state_cv_.Wait(); - } - mu_.Unlock(); - } - - void Change(ReaderState s) { - mu_.Lock(); - state_ = s; - state_cv_.Signal(); - mu_.Unlock(); - } - - private: - port::Mutex mu_; - ReaderState state_; - port::CondVar state_cv_; -}; - -static void ConcurrentReader(void* arg) { - TestState* state = reinterpret_cast(arg); - Random rnd(state->seed_); - int64_t reads = 0; - state->Change(TestState::RUNNING); - while (!state->quit_flag_.Acquire_Load()) { - state->t_.ReadStep(&rnd); - ++reads; - } - state->Change(TestState::DONE); -} - -static void RunConcurrent(int run) { - const int seed = test::RandomSeed() + (run * 100); - Random rnd(seed); - const int N = 1000; - const int kSize = 1000; - for (int i = 0; i < N; i++) { - if ((i % 100) == 0) { - fprintf(stderr, "Run %d of %d\n", i, N); - } - TestState state(seed + 1); - Env::Default()->Schedule(ConcurrentReader, &state); - state.Wait(TestState::RUNNING); - for (int i = 0; i < kSize; i++) { - state.t_.WriteStep(&rnd); - } - state.quit_flag_.Release_Store(&state); // Any non-NULL arg will do - state.Wait(TestState::DONE); - } -} - -TEST(SkipTest, Concurrent1) { RunConcurrent(1); } -TEST(SkipTest, Concurrent2) { RunConcurrent(2); } -TEST(SkipTest, Concurrent3) { RunConcurrent(3); } -TEST(SkipTest, Concurrent4) { RunConcurrent(4); } -TEST(SkipTest, Concurrent5) { RunConcurrent(5); } - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/snapshot.h b/leveldb-1.18/db/snapshot.h deleted file mode 100644 index e7f8fd2..0000000 --- a/leveldb-1.18/db/snapshot.h +++ /dev/null @@ -1,66 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_SNAPSHOT_H_ -#define STORAGE_LEVELDB_DB_SNAPSHOT_H_ - -#include "leveldb/db.h" - -namespace leveldb { - -class SnapshotList; - -// Snapshots are kept in a doubly-linked list in the DB. -// Each SnapshotImpl corresponds to a particular sequence number. -class SnapshotImpl : public Snapshot { - public: - SequenceNumber number_; // const after creation - - private: - friend class SnapshotList; - - // SnapshotImpl is kept in a doubly-linked circular list - SnapshotImpl* prev_; - SnapshotImpl* next_; - - SnapshotList* list_; // just for sanity checks -}; - -class SnapshotList { - public: - SnapshotList() { - list_.prev_ = &list_; - list_.next_ = &list_; - } - - bool empty() const { return list_.next_ == &list_; } - SnapshotImpl* oldest() const { assert(!empty()); return list_.next_; } - SnapshotImpl* newest() const { assert(!empty()); return list_.prev_; } - - const SnapshotImpl* New(SequenceNumber seq) { - SnapshotImpl* s = new SnapshotImpl; - s->number_ = seq; - s->list_ = this; - s->next_ = &list_; - s->prev_ = list_.prev_; - s->prev_->next_ = s; - s->next_->prev_ = s; - return s; - } - - void Delete(const SnapshotImpl* s) { - assert(s->list_ == this); - s->prev_->next_ = s->next_; - s->next_->prev_ = s->prev_; - delete s; - } - - private: - // Dummy head of doubly-linked list of snapshots - SnapshotImpl list_; -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_SNAPSHOT_H_ diff --git a/leveldb-1.18/db/table_cache.cc b/leveldb-1.18/db/table_cache.cc deleted file mode 100644 index e3d82cd..0000000 --- a/leveldb-1.18/db/table_cache.cc +++ /dev/null @@ -1,127 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/table_cache.h" - -#include "db/filename.h" -#include "leveldb/env.h" -#include "leveldb/table.h" -#include "util/coding.h" - -namespace leveldb { - -struct TableAndFile { - RandomAccessFile* file; - Table* table; -}; - -static void DeleteEntry(const Slice& key, void* value) { - TableAndFile* tf = reinterpret_cast(value); - delete tf->table; - delete tf->file; - delete tf; -} - -static void UnrefEntry(void* arg1, void* arg2) { - Cache* cache = reinterpret_cast(arg1); - Cache::Handle* h = reinterpret_cast(arg2); - cache->Release(h); -} - -TableCache::TableCache(const std::string& dbname, - const Options* options, - int entries) - : env_(options->env), - dbname_(dbname), - options_(options), - cache_(NewLRUCache(entries)) { -} - -TableCache::~TableCache() { - delete cache_; -} - -Status TableCache::FindTable(uint64_t file_number, uint64_t file_size, - Cache::Handle** handle) { - Status s; - char buf[sizeof(file_number)]; - EncodeFixed64(buf, file_number); - Slice key(buf, sizeof(buf)); - *handle = cache_->Lookup(key); - if (*handle == NULL) { - std::string fname = TableFileName(dbname_, file_number); - RandomAccessFile* file = NULL; - Table* table = NULL; - s = env_->NewRandomAccessFile(fname, &file); - if (!s.ok()) { - std::string old_fname = SSTTableFileName(dbname_, file_number); - if (env_->NewRandomAccessFile(old_fname, &file).ok()) { - s = Status::OK(); - } - } - if (s.ok()) { - s = Table::Open(*options_, file, file_size, &table); - } - - if (!s.ok()) { - assert(table == NULL); - delete file; - // We do not cache error results so that if the error is transient, - // or somebody repairs the file, we recover automatically. - } else { - TableAndFile* tf = new TableAndFile; - tf->file = file; - tf->table = table; - *handle = cache_->Insert(key, tf, 1, &DeleteEntry); - } - } - return s; -} - -Iterator* TableCache::NewIterator(const ReadOptions& options, - uint64_t file_number, - uint64_t file_size, - Table** tableptr) { - if (tableptr != NULL) { - *tableptr = NULL; - } - - Cache::Handle* handle = NULL; - Status s = FindTable(file_number, file_size, &handle); - if (!s.ok()) { - return NewErrorIterator(s); - } - - Table* table = reinterpret_cast(cache_->Value(handle))->table; - Iterator* result = table->NewIterator(options); - result->RegisterCleanup(&UnrefEntry, cache_, handle); - if (tableptr != NULL) { - *tableptr = table; - } - return result; -} - -Status TableCache::Get(const ReadOptions& options, - uint64_t file_number, - uint64_t file_size, - const Slice& k, - void* arg, - void (*saver)(void*, const Slice&, const Slice&)) { - Cache::Handle* handle = NULL; - Status s = FindTable(file_number, file_size, &handle); - if (s.ok()) { - Table* t = reinterpret_cast(cache_->Value(handle))->table; - s = t->InternalGet(options, k, arg, saver); - cache_->Release(handle); - } - return s; -} - -void TableCache::Evict(uint64_t file_number) { - char buf[sizeof(file_number)]; - EncodeFixed64(buf, file_number); - cache_->Erase(Slice(buf, sizeof(buf))); -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/table_cache.h b/leveldb-1.18/db/table_cache.h deleted file mode 100644 index 8cf4aaf..0000000 --- a/leveldb-1.18/db/table_cache.h +++ /dev/null @@ -1,61 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Thread-safe (provides internal synchronization) - -#ifndef STORAGE_LEVELDB_DB_TABLE_CACHE_H_ -#define STORAGE_LEVELDB_DB_TABLE_CACHE_H_ - -#include -#include -#include "db/dbformat.h" -#include "leveldb/cache.h" -#include "leveldb/table.h" -#include "port/port.h" - -namespace leveldb { - -class Env; - -class TableCache { - public: - TableCache(const std::string& dbname, const Options* options, int entries); - ~TableCache(); - - // Return an iterator for the specified file number (the corresponding - // file length must be exactly "file_size" bytes). If "tableptr" is - // non-NULL, also sets "*tableptr" to point to the Table object - // underlying the returned iterator, or NULL if no Table object underlies - // the returned iterator. The returned "*tableptr" object is owned by - // the cache and should not be deleted, and is valid for as long as the - // returned iterator is live. - Iterator* NewIterator(const ReadOptions& options, - uint64_t file_number, - uint64_t file_size, - Table** tableptr = NULL); - - // If a seek to internal key "k" in specified file finds an entry, - // call (*handle_result)(arg, found_key, found_value). - Status Get(const ReadOptions& options, - uint64_t file_number, - uint64_t file_size, - const Slice& k, - void* arg, - void (*handle_result)(void*, const Slice&, const Slice&)); - - // Evict any entry for the specified file number - void Evict(uint64_t file_number); - - private: - Env* const env_; - const std::string dbname_; - const Options* options_; - Cache* cache_; - - Status FindTable(uint64_t file_number, uint64_t file_size, Cache::Handle**); -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_TABLE_CACHE_H_ diff --git a/leveldb-1.18/db/version_edit.cc b/leveldb-1.18/db/version_edit.cc deleted file mode 100644 index f10a2d5..0000000 --- a/leveldb-1.18/db/version_edit.cc +++ /dev/null @@ -1,266 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/version_edit.h" - -#include "db/version_set.h" -#include "util/coding.h" - -namespace leveldb { - -// Tag numbers for serialized VersionEdit. These numbers are written to -// disk and should not be changed. -enum Tag { - kComparator = 1, - kLogNumber = 2, - kNextFileNumber = 3, - kLastSequence = 4, - kCompactPointer = 5, - kDeletedFile = 6, - kNewFile = 7, - // 8 was used for large value refs - kPrevLogNumber = 9 -}; - -void VersionEdit::Clear() { - comparator_.clear(); - log_number_ = 0; - prev_log_number_ = 0; - last_sequence_ = 0; - next_file_number_ = 0; - has_comparator_ = false; - has_log_number_ = false; - has_prev_log_number_ = false; - has_next_file_number_ = false; - has_last_sequence_ = false; - deleted_files_.clear(); - new_files_.clear(); -} - -void VersionEdit::EncodeTo(std::string* dst) const { - if (has_comparator_) { - PutVarint32(dst, kComparator); - PutLengthPrefixedSlice(dst, comparator_); - } - if (has_log_number_) { - PutVarint32(dst, kLogNumber); - PutVarint64(dst, log_number_); - } - if (has_prev_log_number_) { - PutVarint32(dst, kPrevLogNumber); - PutVarint64(dst, prev_log_number_); - } - if (has_next_file_number_) { - PutVarint32(dst, kNextFileNumber); - PutVarint64(dst, next_file_number_); - } - if (has_last_sequence_) { - PutVarint32(dst, kLastSequence); - PutVarint64(dst, last_sequence_); - } - - for (size_t i = 0; i < compact_pointers_.size(); i++) { - PutVarint32(dst, kCompactPointer); - PutVarint32(dst, compact_pointers_[i].first); // level - PutLengthPrefixedSlice(dst, compact_pointers_[i].second.Encode()); - } - - for (DeletedFileSet::const_iterator iter = deleted_files_.begin(); - iter != deleted_files_.end(); - ++iter) { - PutVarint32(dst, kDeletedFile); - PutVarint32(dst, iter->first); // level - PutVarint64(dst, iter->second); // file number - } - - for (size_t i = 0; i < new_files_.size(); i++) { - const FileMetaData& f = new_files_[i].second; - PutVarint32(dst, kNewFile); - PutVarint32(dst, new_files_[i].first); // level - PutVarint64(dst, f.number); - PutVarint64(dst, f.file_size); - PutLengthPrefixedSlice(dst, f.smallest.Encode()); - PutLengthPrefixedSlice(dst, f.largest.Encode()); - } -} - -static bool GetInternalKey(Slice* input, InternalKey* dst) { - Slice str; - if (GetLengthPrefixedSlice(input, &str)) { - dst->DecodeFrom(str); - return true; - } else { - return false; - } -} - -static bool GetLevel(Slice* input, int* level) { - uint32_t v; - if (GetVarint32(input, &v) && - v < config::kNumLevels) { - *level = v; - return true; - } else { - return false; - } -} - -Status VersionEdit::DecodeFrom(const Slice& src) { - Clear(); - Slice input = src; - const char* msg = NULL; - uint32_t tag; - - // Temporary storage for parsing - int level; - uint64_t number; - FileMetaData f; - Slice str; - InternalKey key; - - while (msg == NULL && GetVarint32(&input, &tag)) { - switch (tag) { - case kComparator: - if (GetLengthPrefixedSlice(&input, &str)) { - comparator_ = str.ToString(); - has_comparator_ = true; - } else { - msg = "comparator name"; - } - break; - - case kLogNumber: - if (GetVarint64(&input, &log_number_)) { - has_log_number_ = true; - } else { - msg = "log number"; - } - break; - - case kPrevLogNumber: - if (GetVarint64(&input, &prev_log_number_)) { - has_prev_log_number_ = true; - } else { - msg = "previous log number"; - } - break; - - case kNextFileNumber: - if (GetVarint64(&input, &next_file_number_)) { - has_next_file_number_ = true; - } else { - msg = "next file number"; - } - break; - - case kLastSequence: - if (GetVarint64(&input, &last_sequence_)) { - has_last_sequence_ = true; - } else { - msg = "last sequence number"; - } - break; - - case kCompactPointer: - if (GetLevel(&input, &level) && - GetInternalKey(&input, &key)) { - compact_pointers_.push_back(std::make_pair(level, key)); - } else { - msg = "compaction pointer"; - } - break; - - case kDeletedFile: - if (GetLevel(&input, &level) && - GetVarint64(&input, &number)) { - deleted_files_.insert(std::make_pair(level, number)); - } else { - msg = "deleted file"; - } - break; - - case kNewFile: - if (GetLevel(&input, &level) && - GetVarint64(&input, &f.number) && - GetVarint64(&input, &f.file_size) && - GetInternalKey(&input, &f.smallest) && - GetInternalKey(&input, &f.largest)) { - new_files_.push_back(std::make_pair(level, f)); - } else { - msg = "new-file entry"; - } - break; - - default: - msg = "unknown tag"; - break; - } - } - - if (msg == NULL && !input.empty()) { - msg = "invalid tag"; - } - - Status result; - if (msg != NULL) { - result = Status::Corruption("VersionEdit", msg); - } - return result; -} - -std::string VersionEdit::DebugString() const { - std::string r; - r.append("VersionEdit {"); - if (has_comparator_) { - r.append("\n Comparator: "); - r.append(comparator_); - } - if (has_log_number_) { - r.append("\n LogNumber: "); - AppendNumberTo(&r, log_number_); - } - if (has_prev_log_number_) { - r.append("\n PrevLogNumber: "); - AppendNumberTo(&r, prev_log_number_); - } - if (has_next_file_number_) { - r.append("\n NextFile: "); - AppendNumberTo(&r, next_file_number_); - } - if (has_last_sequence_) { - r.append("\n LastSeq: "); - AppendNumberTo(&r, last_sequence_); - } - for (size_t i = 0; i < compact_pointers_.size(); i++) { - r.append("\n CompactPointer: "); - AppendNumberTo(&r, compact_pointers_[i].first); - r.append(" "); - r.append(compact_pointers_[i].second.DebugString()); - } - for (DeletedFileSet::const_iterator iter = deleted_files_.begin(); - iter != deleted_files_.end(); - ++iter) { - r.append("\n DeleteFile: "); - AppendNumberTo(&r, iter->first); - r.append(" "); - AppendNumberTo(&r, iter->second); - } - for (size_t i = 0; i < new_files_.size(); i++) { - const FileMetaData& f = new_files_[i].second; - r.append("\n AddFile: "); - AppendNumberTo(&r, new_files_[i].first); - r.append(" "); - AppendNumberTo(&r, f.number); - r.append(" "); - AppendNumberTo(&r, f.file_size); - r.append(" "); - r.append(f.smallest.DebugString()); - r.append(" .. "); - r.append(f.largest.DebugString()); - } - r.append("\n}\n"); - return r; -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/version_edit.h b/leveldb-1.18/db/version_edit.h deleted file mode 100644 index eaef77b..0000000 --- a/leveldb-1.18/db/version_edit.h +++ /dev/null @@ -1,107 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_VERSION_EDIT_H_ -#define STORAGE_LEVELDB_DB_VERSION_EDIT_H_ - -#include -#include -#include -#include "db/dbformat.h" - -namespace leveldb { - -class VersionSet; - -struct FileMetaData { - int refs; - int allowed_seeks; // Seeks allowed until compaction - uint64_t number; - uint64_t file_size; // File size in bytes - InternalKey smallest; // Smallest internal key served by table - InternalKey largest; // Largest internal key served by table - - FileMetaData() : refs(0), allowed_seeks(1 << 30), file_size(0) { } -}; - -class VersionEdit { - public: - VersionEdit() { Clear(); } - ~VersionEdit() { } - - void Clear(); - - void SetComparatorName(const Slice& name) { - has_comparator_ = true; - comparator_ = name.ToString(); - } - void SetLogNumber(uint64_t num) { - has_log_number_ = true; - log_number_ = num; - } - void SetPrevLogNumber(uint64_t num) { - has_prev_log_number_ = true; - prev_log_number_ = num; - } - void SetNextFile(uint64_t num) { - has_next_file_number_ = true; - next_file_number_ = num; - } - void SetLastSequence(SequenceNumber seq) { - has_last_sequence_ = true; - last_sequence_ = seq; - } - void SetCompactPointer(int level, const InternalKey& key) { - compact_pointers_.push_back(std::make_pair(level, key)); - } - - // Add the specified file at the specified number. - // REQUIRES: This version has not been saved (see VersionSet::SaveTo) - // REQUIRES: "smallest" and "largest" are smallest and largest keys in file - void AddFile(int level, uint64_t file, - uint64_t file_size, - const InternalKey& smallest, - const InternalKey& largest) { - FileMetaData f; - f.number = file; - f.file_size = file_size; - f.smallest = smallest; - f.largest = largest; - new_files_.push_back(std::make_pair(level, f)); - } - - // Delete the specified "file" from the specified "level". - void DeleteFile(int level, uint64_t file) { - deleted_files_.insert(std::make_pair(level, file)); - } - - void EncodeTo(std::string* dst) const; - Status DecodeFrom(const Slice& src); - - std::string DebugString() const; - - private: - friend class VersionSet; - - typedef std::set< std::pair > DeletedFileSet; - - std::string comparator_; - uint64_t log_number_; - uint64_t prev_log_number_; - uint64_t next_file_number_; - SequenceNumber last_sequence_; - bool has_comparator_; - bool has_log_number_; - bool has_prev_log_number_; - bool has_next_file_number_; - bool has_last_sequence_; - - std::vector< std::pair > compact_pointers_; - DeletedFileSet deleted_files_; - std::vector< std::pair > new_files_; -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_VERSION_EDIT_H_ diff --git a/leveldb-1.18/db/version_edit_test.cc b/leveldb-1.18/db/version_edit_test.cc deleted file mode 100644 index 280310b..0000000 --- a/leveldb-1.18/db/version_edit_test.cc +++ /dev/null @@ -1,46 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/version_edit.h" -#include "util/testharness.h" - -namespace leveldb { - -static void TestEncodeDecode(const VersionEdit& edit) { - std::string encoded, encoded2; - edit.EncodeTo(&encoded); - VersionEdit parsed; - Status s = parsed.DecodeFrom(encoded); - ASSERT_TRUE(s.ok()) << s.ToString(); - parsed.EncodeTo(&encoded2); - ASSERT_EQ(encoded, encoded2); -} - -class VersionEditTest { }; - -TEST(VersionEditTest, EncodeDecode) { - static const uint64_t kBig = 1ull << 50; - - VersionEdit edit; - for (int i = 0; i < 4; i++) { - TestEncodeDecode(edit); - edit.AddFile(3, kBig + 300 + i, kBig + 400 + i, - InternalKey("foo", kBig + 500 + i, kTypeValue), - InternalKey("zoo", kBig + 600 + i, kTypeDeletion)); - edit.DeleteFile(4, kBig + 700 + i); - edit.SetCompactPointer(i, InternalKey("x", kBig + 900 + i, kTypeValue)); - } - - edit.SetComparatorName("foo"); - edit.SetLogNumber(kBig + 100); - edit.SetNextFile(kBig + 200); - edit.SetLastSequence(kBig + 1000); - TestEncodeDecode(edit); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/version_set.cc b/leveldb-1.18/db/version_set.cc deleted file mode 100644 index aa83df5..0000000 --- a/leveldb-1.18/db/version_set.cc +++ /dev/null @@ -1,1484 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/version_set.h" - -#include -#include -#include "db/filename.h" -#include "db/log_reader.h" -#include "db/log_writer.h" -#include "db/memtable.h" -#include "db/table_cache.h" -#include "leveldb/env.h" -#include "leveldb/table_builder.h" -#include "table/merger.h" -#include "table/two_level_iterator.h" -#include "util/coding.h" -#include "util/logging.h" - -namespace leveldb { - -static const int kTargetFileSize = 2 * 1048576; - -// Maximum bytes of overlaps in grandparent (i.e., level+2) before we -// stop building a single file in a level->level+1 compaction. -static const int64_t kMaxGrandParentOverlapBytes = 10 * kTargetFileSize; - -// Maximum number of bytes in all compacted files. We avoid expanding -// the lower level file set of a compaction if it would make the -// total compaction cover more than this many bytes. -static const int64_t kExpandedCompactionByteSizeLimit = 25 * kTargetFileSize; - -static double MaxBytesForLevel(int level) { - // Note: the result for level zero is not really used since we set - // the level-0 compaction threshold based on number of files. - double result = 10 * 1048576.0; // Result for both level-0 and level-1 - while (level > 1) { - result *= 10; - level--; - } - return result; -} - -static uint64_t MaxFileSizeForLevel(int level) { - return kTargetFileSize; // We could vary per level to reduce number of files? -} - -static int64_t TotalFileSize(const std::vector& files) { - int64_t sum = 0; - for (size_t i = 0; i < files.size(); i++) { - sum += files[i]->file_size; - } - return sum; -} - -Version::~Version() { - assert(refs_ == 0); - - // Remove from linked list - prev_->next_ = next_; - next_->prev_ = prev_; - - // Drop references to files - for (int level = 0; level < config::kNumLevels; level++) { - for (size_t i = 0; i < files_[level].size(); i++) { - FileMetaData* f = files_[level][i]; - assert(f->refs > 0); - f->refs--; - if (f->refs <= 0) { - delete f; - } - } - } -} - -int FindFile(const InternalKeyComparator& icmp, - const std::vector& files, - const Slice& key) { - uint32_t left = 0; - uint32_t right = files.size(); - while (left < right) { - uint32_t mid = (left + right) / 2; - const FileMetaData* f = files[mid]; - if (icmp.InternalKeyComparator::Compare(f->largest.Encode(), key) < 0) { - // Key at "mid.largest" is < "target". Therefore all - // files at or before "mid" are uninteresting. - left = mid + 1; - } else { - // Key at "mid.largest" is >= "target". Therefore all files - // after "mid" are uninteresting. - right = mid; - } - } - return right; -} - -static bool AfterFile(const Comparator* ucmp, - const Slice* user_key, const FileMetaData* f) { - // NULL user_key occurs before all keys and is therefore never after *f - return (user_key != NULL && - ucmp->Compare(*user_key, f->largest.user_key()) > 0); -} - -static bool BeforeFile(const Comparator* ucmp, - const Slice* user_key, const FileMetaData* f) { - // NULL user_key occurs after all keys and is therefore never before *f - return (user_key != NULL && - ucmp->Compare(*user_key, f->smallest.user_key()) < 0); -} - -bool SomeFileOverlapsRange( - const InternalKeyComparator& icmp, - bool disjoint_sorted_files, - const std::vector& files, - const Slice* smallest_user_key, - const Slice* largest_user_key) { - const Comparator* ucmp = icmp.user_comparator(); - if (!disjoint_sorted_files) { - // Need to check against all files - for (size_t i = 0; i < files.size(); i++) { - const FileMetaData* f = files[i]; - if (AfterFile(ucmp, smallest_user_key, f) || - BeforeFile(ucmp, largest_user_key, f)) { - // No overlap - } else { - return true; // Overlap - } - } - return false; - } - - // Binary search over file list - uint32_t index = 0; - if (smallest_user_key != NULL) { - // Find the earliest possible internal key for smallest_user_key - InternalKey small(*smallest_user_key, kMaxSequenceNumber,kValueTypeForSeek); - index = FindFile(icmp, files, small.Encode()); - } - - if (index >= files.size()) { - // beginning of range is after all files, so no overlap. - return false; - } - - return !BeforeFile(ucmp, largest_user_key, files[index]); -} - -// An internal iterator. For a given version/level pair, yields -// information about the files in the level. For a given entry, key() -// is the largest key that occurs in the file, and value() is an -// 16-byte value containing the file number and file size, both -// encoded using EncodeFixed64. -class Version::LevelFileNumIterator : public Iterator { - public: - LevelFileNumIterator(const InternalKeyComparator& icmp, - const std::vector* flist) - : icmp_(icmp), - flist_(flist), - index_(flist->size()) { // Marks as invalid - } - virtual bool Valid() const { - return index_ < flist_->size(); - } - virtual void Seek(const Slice& target) { - index_ = FindFile(icmp_, *flist_, target); - } - virtual void SeekToFirst() { index_ = 0; } - virtual void SeekToLast() { - index_ = flist_->empty() ? 0 : flist_->size() - 1; - } - virtual void Next() { - assert(Valid()); - index_++; - } - virtual void Prev() { - assert(Valid()); - if (index_ == 0) { - index_ = flist_->size(); // Marks as invalid - } else { - index_--; - } - } - Slice key() const { - assert(Valid()); - return (*flist_)[index_]->largest.Encode(); - } - Slice value() const { - assert(Valid()); - EncodeFixed64(value_buf_, (*flist_)[index_]->number); - EncodeFixed64(value_buf_+8, (*flist_)[index_]->file_size); - return Slice(value_buf_, sizeof(value_buf_)); - } - virtual Status status() const { return Status::OK(); } - private: - const InternalKeyComparator icmp_; - const std::vector* const flist_; - uint32_t index_; - - // Backing store for value(). Holds the file number and size. - mutable char value_buf_[16]; -}; - -static Iterator* GetFileIterator(void* arg, - const ReadOptions& options, - const Slice& file_value) { - TableCache* cache = reinterpret_cast(arg); - if (file_value.size() != 16) { - return NewErrorIterator( - Status::Corruption("FileReader invoked with unexpected value")); - } else { - return cache->NewIterator(options, - DecodeFixed64(file_value.data()), - DecodeFixed64(file_value.data() + 8)); - } -} - -Iterator* Version::NewConcatenatingIterator(const ReadOptions& options, - int level) const { - return NewTwoLevelIterator( - new LevelFileNumIterator(vset_->icmp_, &files_[level]), - &GetFileIterator, vset_->table_cache_, options); -} - -void Version::AddIterators(const ReadOptions& options, - std::vector* iters) { - // Merge all level zero files together since they may overlap - for (size_t i = 0; i < files_[0].size(); i++) { - iters->push_back( - vset_->table_cache_->NewIterator( - options, files_[0][i]->number, files_[0][i]->file_size)); - } - - // For levels > 0, we can use a concatenating iterator that sequentially - // walks through the non-overlapping files in the level, opening them - // lazily. - for (int level = 1; level < config::kNumLevels; level++) { - if (!files_[level].empty()) { - iters->push_back(NewConcatenatingIterator(options, level)); - } - } -} - -// Callback from TableCache::Get() -namespace { -enum SaverState { - kNotFound, - kFound, - kDeleted, - kCorrupt, -}; -struct Saver { - SaverState state; - const Comparator* ucmp; - Slice user_key; - std::string* value; -}; -} -static void SaveValue(void* arg, const Slice& ikey, const Slice& v) { - Saver* s = reinterpret_cast(arg); - ParsedInternalKey parsed_key; - if (!ParseInternalKey(ikey, &parsed_key)) { - s->state = kCorrupt; - } else { - if (s->ucmp->Compare(parsed_key.user_key, s->user_key) == 0) { - s->state = (parsed_key.type == kTypeValue) ? kFound : kDeleted; - if (s->state == kFound) { - s->value->assign(v.data(), v.size()); - } - } - } -} - -static bool NewestFirst(FileMetaData* a, FileMetaData* b) { - return a->number > b->number; -} - -void Version::ForEachOverlapping(Slice user_key, Slice internal_key, - void* arg, - bool (*func)(void*, int, FileMetaData*)) { - // TODO(sanjay): Change Version::Get() to use this function. - const Comparator* ucmp = vset_->icmp_.user_comparator(); - - // Search level-0 in order from newest to oldest. - std::vector tmp; - tmp.reserve(files_[0].size()); - for (uint32_t i = 0; i < files_[0].size(); i++) { - FileMetaData* f = files_[0][i]; - if (ucmp->Compare(user_key, f->smallest.user_key()) >= 0 && - ucmp->Compare(user_key, f->largest.user_key()) <= 0) { - tmp.push_back(f); - } - } - if (!tmp.empty()) { - std::sort(tmp.begin(), tmp.end(), NewestFirst); - for (uint32_t i = 0; i < tmp.size(); i++) { - if (!(*func)(arg, 0, tmp[i])) { - return; - } - } - } - - // Search other levels. - for (int level = 1; level < config::kNumLevels; level++) { - size_t num_files = files_[level].size(); - if (num_files == 0) continue; - - // Binary search to find earliest index whose largest key >= internal_key. - uint32_t index = FindFile(vset_->icmp_, files_[level], internal_key); - if (index < num_files) { - FileMetaData* f = files_[level][index]; - if (ucmp->Compare(user_key, f->smallest.user_key()) < 0) { - // All of "f" is past any data for user_key - } else { - if (!(*func)(arg, level, f)) { - return; - } - } - } - } -} - -Status Version::Get(const ReadOptions& options, - const LookupKey& k, - std::string* value, - GetStats* stats) { - Slice ikey = k.internal_key(); - Slice user_key = k.user_key(); - const Comparator* ucmp = vset_->icmp_.user_comparator(); - Status s; - - stats->seek_file = NULL; - stats->seek_file_level = -1; - FileMetaData* last_file_read = NULL; - int last_file_read_level = -1; - - // We can search level-by-level since entries never hop across - // levels. Therefore we are guaranteed that if we find data - // in an smaller level, later levels are irrelevant. - std::vector tmp; - FileMetaData* tmp2; - for (int level = 0; level < config::kNumLevels; level++) { - size_t num_files = files_[level].size(); - if (num_files == 0) continue; - - // Get the list of files to search in this level - FileMetaData* const* files = &files_[level][0]; - if (level == 0) { - // Level-0 files may overlap each other. Find all files that - // overlap user_key and process them in order from newest to oldest. - tmp.reserve(num_files); - for (uint32_t i = 0; i < num_files; i++) { - FileMetaData* f = files[i]; - if (ucmp->Compare(user_key, f->smallest.user_key()) >= 0 && - ucmp->Compare(user_key, f->largest.user_key()) <= 0) { - tmp.push_back(f); - } - } - if (tmp.empty()) continue; - - std::sort(tmp.begin(), tmp.end(), NewestFirst); - files = &tmp[0]; - num_files = tmp.size(); - } else { - // Binary search to find earliest index whose largest key >= ikey. - uint32_t index = FindFile(vset_->icmp_, files_[level], ikey); - if (index >= num_files) { - files = NULL; - num_files = 0; - } else { - tmp2 = files[index]; - if (ucmp->Compare(user_key, tmp2->smallest.user_key()) < 0) { - // All of "tmp2" is past any data for user_key - files = NULL; - num_files = 0; - } else { - files = &tmp2; - num_files = 1; - } - } - } - - for (uint32_t i = 0; i < num_files; ++i) { - if (last_file_read != NULL && stats->seek_file == NULL) { - // We have had more than one seek for this read. Charge the 1st file. - stats->seek_file = last_file_read; - stats->seek_file_level = last_file_read_level; - } - - FileMetaData* f = files[i]; - last_file_read = f; - last_file_read_level = level; - - Saver saver; - saver.state = kNotFound; - saver.ucmp = ucmp; - saver.user_key = user_key; - saver.value = value; - s = vset_->table_cache_->Get(options, f->number, f->file_size, - ikey, &saver, SaveValue); - if (!s.ok()) { - return s; - } - switch (saver.state) { - case kNotFound: - break; // Keep searching in other files - case kFound: - return s; - case kDeleted: - s = Status::NotFound(Slice()); // Use empty error message for speed - return s; - case kCorrupt: - s = Status::Corruption("corrupted key for ", user_key); - return s; - } - } - } - - return Status::NotFound(Slice()); // Use an empty error message for speed -} - -bool Version::UpdateStats(const GetStats& stats) { - FileMetaData* f = stats.seek_file; - if (f != NULL) { - f->allowed_seeks--; - if (f->allowed_seeks <= 0 && file_to_compact_ == NULL) { - file_to_compact_ = f; - file_to_compact_level_ = stats.seek_file_level; - return true; - } - } - return false; -} - -bool Version::RecordReadSample(Slice internal_key) { - ParsedInternalKey ikey; - if (!ParseInternalKey(internal_key, &ikey)) { - return false; - } - - struct State { - GetStats stats; // Holds first matching file - int matches; - - static bool Match(void* arg, int level, FileMetaData* f) { - State* state = reinterpret_cast(arg); - state->matches++; - if (state->matches == 1) { - // Remember first match. - state->stats.seek_file = f; - state->stats.seek_file_level = level; - } - // We can stop iterating once we have a second match. - return state->matches < 2; - } - }; - - State state; - state.matches = 0; - ForEachOverlapping(ikey.user_key, internal_key, &state, &State::Match); - - // Must have at least two matches since we want to merge across - // files. But what if we have a single file that contains many - // overwrites and deletions? Should we have another mechanism for - // finding such files? - if (state.matches >= 2) { - // 1MB cost is about 1 seek (see comment in Builder::Apply). - return UpdateStats(state.stats); - } - return false; -} - -void Version::Ref() { - ++refs_; -} - -void Version::Unref() { - assert(this != &vset_->dummy_versions_); - assert(refs_ >= 1); - --refs_; - if (refs_ == 0) { - delete this; - } -} - -bool Version::OverlapInLevel(int level, - const Slice* smallest_user_key, - const Slice* largest_user_key) { - return SomeFileOverlapsRange(vset_->icmp_, (level > 0), files_[level], - smallest_user_key, largest_user_key); -} - -int Version::PickLevelForMemTableOutput( - const Slice& smallest_user_key, - const Slice& largest_user_key) { - int level = 0; - if (!OverlapInLevel(0, &smallest_user_key, &largest_user_key)) { - // Push to next level if there is no overlap in next level, - // and the #bytes overlapping in the level after that are limited. - InternalKey start(smallest_user_key, kMaxSequenceNumber, kValueTypeForSeek); - InternalKey limit(largest_user_key, 0, static_cast(0)); - std::vector overlaps; - while (level < config::kMaxMemCompactLevel) { - if (OverlapInLevel(level + 1, &smallest_user_key, &largest_user_key)) { - break; - } - if (level + 2 < config::kNumLevels) { - // Check that file does not overlap too many grandparent bytes. - GetOverlappingInputs(level + 2, &start, &limit, &overlaps); - const int64_t sum = TotalFileSize(overlaps); - if (sum > kMaxGrandParentOverlapBytes) { - break; - } - } - level++; - } - } - return level; -} - -// Store in "*inputs" all files in "level" that overlap [begin,end] -void Version::GetOverlappingInputs( - int level, - const InternalKey* begin, - const InternalKey* end, - std::vector* inputs) { - assert(level >= 0); - assert(level < config::kNumLevels); - inputs->clear(); - Slice user_begin, user_end; - if (begin != NULL) { - user_begin = begin->user_key(); - } - if (end != NULL) { - user_end = end->user_key(); - } - const Comparator* user_cmp = vset_->icmp_.user_comparator(); - for (size_t i = 0; i < files_[level].size(); ) { - FileMetaData* f = files_[level][i++]; - const Slice file_start = f->smallest.user_key(); - const Slice file_limit = f->largest.user_key(); - if (begin != NULL && user_cmp->Compare(file_limit, user_begin) < 0) { - // "f" is completely before specified range; skip it - } else if (end != NULL && user_cmp->Compare(file_start, user_end) > 0) { - // "f" is completely after specified range; skip it - } else { - inputs->push_back(f); - if (level == 0) { - // Level-0 files may overlap each other. So check if the newly - // added file has expanded the range. If so, restart search. - if (begin != NULL && user_cmp->Compare(file_start, user_begin) < 0) { - user_begin = file_start; - inputs->clear(); - i = 0; - } else if (end != NULL && user_cmp->Compare(file_limit, user_end) > 0) { - user_end = file_limit; - inputs->clear(); - i = 0; - } - } - } - } -} - -std::string Version::DebugString() const { - std::string r; - for (int level = 0; level < config::kNumLevels; level++) { - // E.g., - // --- level 1 --- - // 17:123['a' .. 'd'] - // 20:43['e' .. 'g'] - r.append("--- level "); - AppendNumberTo(&r, level); - r.append(" ---\n"); - const std::vector& files = files_[level]; - for (size_t i = 0; i < files.size(); i++) { - r.push_back(' '); - AppendNumberTo(&r, files[i]->number); - r.push_back(':'); - AppendNumberTo(&r, files[i]->file_size); - r.append("["); - r.append(files[i]->smallest.DebugString()); - r.append(" .. "); - r.append(files[i]->largest.DebugString()); - r.append("]\n"); - } - } - return r; -} - -// A helper class so we can efficiently apply a whole sequence -// of edits to a particular state without creating intermediate -// Versions that contain full copies of the intermediate state. -class VersionSet::Builder { - private: - // Helper to sort by v->files_[file_number].smallest - struct BySmallestKey { - const InternalKeyComparator* internal_comparator; - - bool operator()(FileMetaData* f1, FileMetaData* f2) const { - int r = internal_comparator->Compare(f1->smallest, f2->smallest); - if (r != 0) { - return (r < 0); - } else { - // Break ties by file number - return (f1->number < f2->number); - } - } - }; - - typedef std::set FileSet; - struct LevelState { - std::set deleted_files; - FileSet* added_files; - }; - - VersionSet* vset_; - Version* base_; - LevelState levels_[config::kNumLevels]; - - public: - // Initialize a builder with the files from *base and other info from *vset - Builder(VersionSet* vset, Version* base) - : vset_(vset), - base_(base) { - base_->Ref(); - BySmallestKey cmp; - cmp.internal_comparator = &vset_->icmp_; - for (int level = 0; level < config::kNumLevels; level++) { - levels_[level].added_files = new FileSet(cmp); - } - } - - ~Builder() { - for (int level = 0; level < config::kNumLevels; level++) { - const FileSet* added = levels_[level].added_files; - std::vector to_unref; - to_unref.reserve(added->size()); - for (FileSet::const_iterator it = added->begin(); - it != added->end(); ++it) { - to_unref.push_back(*it); - } - delete added; - for (uint32_t i = 0; i < to_unref.size(); i++) { - FileMetaData* f = to_unref[i]; - f->refs--; - if (f->refs <= 0) { - delete f; - } - } - } - base_->Unref(); - } - - // Apply all of the edits in *edit to the current state. - void Apply(VersionEdit* edit) { - // Update compaction pointers - for (size_t i = 0; i < edit->compact_pointers_.size(); i++) { - const int level = edit->compact_pointers_[i].first; - vset_->compact_pointer_[level] = - edit->compact_pointers_[i].second.Encode().ToString(); - } - - // Delete files - const VersionEdit::DeletedFileSet& del = edit->deleted_files_; - for (VersionEdit::DeletedFileSet::const_iterator iter = del.begin(); - iter != del.end(); - ++iter) { - const int level = iter->first; - const uint64_t number = iter->second; - levels_[level].deleted_files.insert(number); - } - - // Add new files - for (size_t i = 0; i < edit->new_files_.size(); i++) { - const int level = edit->new_files_[i].first; - FileMetaData* f = new FileMetaData(edit->new_files_[i].second); - f->refs = 1; - - // We arrange to automatically compact this file after - // a certain number of seeks. Let's assume: - // (1) One seek costs 10ms - // (2) Writing or reading 1MB costs 10ms (100MB/s) - // (3) A compaction of 1MB does 25MB of IO: - // 1MB read from this level - // 10-12MB read from next level (boundaries may be misaligned) - // 10-12MB written to next level - // This implies that 25 seeks cost the same as the compaction - // of 1MB of data. I.e., one seek costs approximately the - // same as the compaction of 40KB of data. We are a little - // conservative and allow approximately one seek for every 16KB - // of data before triggering a compaction. - f->allowed_seeks = (f->file_size / 16384); - if (f->allowed_seeks < 100) f->allowed_seeks = 100; - - levels_[level].deleted_files.erase(f->number); - levels_[level].added_files->insert(f); - } - } - - // Save the current state in *v. - void SaveTo(Version* v) { - BySmallestKey cmp; - cmp.internal_comparator = &vset_->icmp_; - for (int level = 0; level < config::kNumLevels; level++) { - // Merge the set of added files with the set of pre-existing files. - // Drop any deleted files. Store the result in *v. - const std::vector& base_files = base_->files_[level]; - std::vector::const_iterator base_iter = base_files.begin(); - std::vector::const_iterator base_end = base_files.end(); - const FileSet* added = levels_[level].added_files; - v->files_[level].reserve(base_files.size() + added->size()); - for (FileSet::const_iterator added_iter = added->begin(); - added_iter != added->end(); - ++added_iter) { - // Add all smaller files listed in base_ - for (std::vector::const_iterator bpos - = std::upper_bound(base_iter, base_end, *added_iter, cmp); - base_iter != bpos; - ++base_iter) { - MaybeAddFile(v, level, *base_iter); - } - - MaybeAddFile(v, level, *added_iter); - } - - // Add remaining base files - for (; base_iter != base_end; ++base_iter) { - MaybeAddFile(v, level, *base_iter); - } - -#ifndef NDEBUG - // Make sure there is no overlap in levels > 0 - if (level > 0) { - for (uint32_t i = 1; i < v->files_[level].size(); i++) { - const InternalKey& prev_end = v->files_[level][i-1]->largest; - const InternalKey& this_begin = v->files_[level][i]->smallest; - if (vset_->icmp_.Compare(prev_end, this_begin) >= 0) { - fprintf(stderr, "overlapping ranges in same level %s vs. %s\n", - prev_end.DebugString().c_str(), - this_begin.DebugString().c_str()); - abort(); - } - } - } -#endif - } - } - - void MaybeAddFile(Version* v, int level, FileMetaData* f) { - if (levels_[level].deleted_files.count(f->number) > 0) { - // File is deleted: do nothing - } else { - std::vector* files = &v->files_[level]; - if (level > 0 && !files->empty()) { - // Must not overlap - assert(vset_->icmp_.Compare((*files)[files->size()-1]->largest, - f->smallest) < 0); - } - f->refs++; - files->push_back(f); - } - } -}; - -VersionSet::VersionSet(const std::string& dbname, - const Options* options, - TableCache* table_cache, - const InternalKeyComparator* cmp) - : env_(options->env), - dbname_(dbname), - options_(options), - table_cache_(table_cache), - icmp_(*cmp), - next_file_number_(2), - manifest_file_number_(0), // Filled by Recover() - last_sequence_(0), - log_number_(0), - prev_log_number_(0), - descriptor_file_(NULL), - descriptor_log_(NULL), - dummy_versions_(this), - current_(NULL) { - AppendVersion(new Version(this)); -} - -VersionSet::~VersionSet() { - current_->Unref(); - assert(dummy_versions_.next_ == &dummy_versions_); // List must be empty - delete descriptor_log_; - delete descriptor_file_; -} - -void VersionSet::AppendVersion(Version* v) { - // Make "v" current - assert(v->refs_ == 0); - assert(v != current_); - if (current_ != NULL) { - current_->Unref(); - } - current_ = v; - v->Ref(); - - // Append to linked list - v->prev_ = dummy_versions_.prev_; - v->next_ = &dummy_versions_; - v->prev_->next_ = v; - v->next_->prev_ = v; -} - -Status VersionSet::LogAndApply(VersionEdit* edit, port::Mutex* mu) { - if (edit->has_log_number_) { - assert(edit->log_number_ >= log_number_); - assert(edit->log_number_ < next_file_number_); - } else { - edit->SetLogNumber(log_number_); - } - - if (!edit->has_prev_log_number_) { - edit->SetPrevLogNumber(prev_log_number_); - } - - edit->SetNextFile(next_file_number_); - edit->SetLastSequence(last_sequence_); - - Version* v = new Version(this); - { - Builder builder(this, current_); - builder.Apply(edit); - builder.SaveTo(v); - } - Finalize(v); - - // Initialize new descriptor log file if necessary by creating - // a temporary file that contains a snapshot of the current version. - std::string new_manifest_file; - Status s; - if (descriptor_log_ == NULL) { - // No reason to unlock *mu here since we only hit this path in the - // first call to LogAndApply (when opening the database). - assert(descriptor_file_ == NULL); - new_manifest_file = DescriptorFileName(dbname_, manifest_file_number_); - edit->SetNextFile(next_file_number_); - s = env_->NewWritableFile(new_manifest_file, &descriptor_file_); - if (s.ok()) { - descriptor_log_ = new log::Writer(descriptor_file_); - s = WriteSnapshot(descriptor_log_); - } - } - - // Unlock during expensive MANIFEST log write - { - mu->Unlock(); - - // Write new record to MANIFEST log - if (s.ok()) { - std::string record; - edit->EncodeTo(&record); - s = descriptor_log_->AddRecord(record); - if (s.ok()) { - s = descriptor_file_->Sync(); - } - if (!s.ok()) { - Log(options_->info_log, "MANIFEST write: %s\n", s.ToString().c_str()); - } - } - - // If we just created a new descriptor file, install it by writing a - // new CURRENT file that points to it. - if (s.ok() && !new_manifest_file.empty()) { - s = SetCurrentFile(env_, dbname_, manifest_file_number_); - } - - mu->Lock(); - } - - // Install the new version - if (s.ok()) { - AppendVersion(v); - log_number_ = edit->log_number_; - prev_log_number_ = edit->prev_log_number_; - } else { - delete v; - if (!new_manifest_file.empty()) { - delete descriptor_log_; - delete descriptor_file_; - descriptor_log_ = NULL; - descriptor_file_ = NULL; - env_->DeleteFile(new_manifest_file); - } - } - - return s; -} - -Status VersionSet::Recover() { - struct LogReporter : public log::Reader::Reporter { - Status* status; - virtual void Corruption(size_t bytes, const Status& s) { - if (this->status->ok()) *this->status = s; - } - }; - - // Read "CURRENT" file, which contains a pointer to the current manifest file - std::string current; - Status s = ReadFileToString(env_, CurrentFileName(dbname_), ¤t); - if (!s.ok()) { - return s; - } - if (current.empty() || current[current.size()-1] != '\n') { - return Status::Corruption("CURRENT file does not end with newline"); - } - current.resize(current.size() - 1); - - std::string dscname = dbname_ + "/" + current; - SequentialFile* file; - s = env_->NewSequentialFile(dscname, &file); - if (!s.ok()) { - return s; - } - - bool have_log_number = false; - bool have_prev_log_number = false; - bool have_next_file = false; - bool have_last_sequence = false; - uint64_t next_file = 0; - uint64_t last_sequence = 0; - uint64_t log_number = 0; - uint64_t prev_log_number = 0; - Builder builder(this, current_); - - { - LogReporter reporter; - reporter.status = &s; - log::Reader reader(file, &reporter, true/*checksum*/, 0/*initial_offset*/); - Slice record; - std::string scratch; - while (reader.ReadRecord(&record, &scratch) && s.ok()) { - VersionEdit edit; - s = edit.DecodeFrom(record); - if (s.ok()) { - if (edit.has_comparator_ && - edit.comparator_ != icmp_.user_comparator()->Name()) { - s = Status::InvalidArgument( - edit.comparator_ + " does not match existing comparator ", - icmp_.user_comparator()->Name()); - } - } - - if (s.ok()) { - builder.Apply(&edit); - } - - if (edit.has_log_number_) { - log_number = edit.log_number_; - have_log_number = true; - } - - if (edit.has_prev_log_number_) { - prev_log_number = edit.prev_log_number_; - have_prev_log_number = true; - } - - if (edit.has_next_file_number_) { - next_file = edit.next_file_number_; - have_next_file = true; - } - - if (edit.has_last_sequence_) { - last_sequence = edit.last_sequence_; - have_last_sequence = true; - } - } - } - delete file; - file = NULL; - - if (s.ok()) { - if (!have_next_file) { - s = Status::Corruption("no meta-nextfile entry in descriptor"); - } else if (!have_log_number) { - s = Status::Corruption("no meta-lognumber entry in descriptor"); - } else if (!have_last_sequence) { - s = Status::Corruption("no last-sequence-number entry in descriptor"); - } - - if (!have_prev_log_number) { - prev_log_number = 0; - } - - MarkFileNumberUsed(prev_log_number); - MarkFileNumberUsed(log_number); - } - - if (s.ok()) { - Version* v = new Version(this); - builder.SaveTo(v); - // Install recovered version - Finalize(v); - AppendVersion(v); - manifest_file_number_ = next_file; - next_file_number_ = next_file + 1; - last_sequence_ = last_sequence; - log_number_ = log_number; - prev_log_number_ = prev_log_number; - } - - return s; -} - -void VersionSet::MarkFileNumberUsed(uint64_t number) { - if (next_file_number_ <= number) { - next_file_number_ = number + 1; - } -} - -void VersionSet::Finalize(Version* v) { - // Precomputed best level for next compaction - int best_level = -1; - double best_score = -1; - - for (int level = 0; level < config::kNumLevels-1; level++) { - double score; - if (level == 0) { - // We treat level-0 specially by bounding the number of files - // instead of number of bytes for two reasons: - // - // (1) With larger write-buffer sizes, it is nice not to do too - // many level-0 compactions. - // - // (2) The files in level-0 are merged on every read and - // therefore we wish to avoid too many files when the individual - // file size is small (perhaps because of a small write-buffer - // setting, or very high compression ratios, or lots of - // overwrites/deletions). - score = v->files_[level].size() / - static_cast(config::kL0_CompactionTrigger); - } else { - // Compute the ratio of current size to size limit. - const uint64_t level_bytes = TotalFileSize(v->files_[level]); - score = static_cast(level_bytes) / MaxBytesForLevel(level); - } - - if (score > best_score) { - best_level = level; - best_score = score; - } - } - - v->compaction_level_ = best_level; - v->compaction_score_ = best_score; -} - -Status VersionSet::WriteSnapshot(log::Writer* log) { - // TODO: Break up into multiple records to reduce memory usage on recovery? - - // Save metadata - VersionEdit edit; - edit.SetComparatorName(icmp_.user_comparator()->Name()); - - // Save compaction pointers - for (int level = 0; level < config::kNumLevels; level++) { - if (!compact_pointer_[level].empty()) { - InternalKey key; - key.DecodeFrom(compact_pointer_[level]); - edit.SetCompactPointer(level, key); - } - } - - // Save files - for (int level = 0; level < config::kNumLevels; level++) { - const std::vector& files = current_->files_[level]; - for (size_t i = 0; i < files.size(); i++) { - const FileMetaData* f = files[i]; - edit.AddFile(level, f->number, f->file_size, f->smallest, f->largest); - } - } - - std::string record; - edit.EncodeTo(&record); - return log->AddRecord(record); -} - -int VersionSet::NumLevelFiles(int level) const { - assert(level >= 0); - assert(level < config::kNumLevels); - return current_->files_[level].size(); -} - -const char* VersionSet::LevelSummary(LevelSummaryStorage* scratch) const { - // Update code if kNumLevels changes - assert(config::kNumLevels == 7); - snprintf(scratch->buffer, sizeof(scratch->buffer), - "files[ %d %d %d %d %d %d %d ]", - int(current_->files_[0].size()), - int(current_->files_[1].size()), - int(current_->files_[2].size()), - int(current_->files_[3].size()), - int(current_->files_[4].size()), - int(current_->files_[5].size()), - int(current_->files_[6].size())); - return scratch->buffer; -} - -uint64_t VersionSet::ApproximateOffsetOf(Version* v, const InternalKey& ikey) { - uint64_t result = 0; - for (int level = 0; level < config::kNumLevels; level++) { - const std::vector& files = v->files_[level]; - for (size_t i = 0; i < files.size(); i++) { - if (icmp_.Compare(files[i]->largest, ikey) <= 0) { - // Entire file is before "ikey", so just add the file size - result += files[i]->file_size; - } else if (icmp_.Compare(files[i]->smallest, ikey) > 0) { - // Entire file is after "ikey", so ignore - if (level > 0) { - // Files other than level 0 are sorted by meta->smallest, so - // no further files in this level will contain data for - // "ikey". - break; - } - } else { - // "ikey" falls in the range for this table. Add the - // approximate offset of "ikey" within the table. - Table* tableptr; - Iterator* iter = table_cache_->NewIterator( - ReadOptions(), files[i]->number, files[i]->file_size, &tableptr); - if (tableptr != NULL) { - result += tableptr->ApproximateOffsetOf(ikey.Encode()); - } - delete iter; - } - } - } - return result; -} - -void VersionSet::AddLiveFiles(std::set* live) { - for (Version* v = dummy_versions_.next_; - v != &dummy_versions_; - v = v->next_) { - for (int level = 0; level < config::kNumLevels; level++) { - const std::vector& files = v->files_[level]; - for (size_t i = 0; i < files.size(); i++) { - live->insert(files[i]->number); - } - } - } -} - -int64_t VersionSet::NumLevelBytes(int level) const { - assert(level >= 0); - assert(level < config::kNumLevels); - return TotalFileSize(current_->files_[level]); -} - -int64_t VersionSet::MaxNextLevelOverlappingBytes() { - int64_t result = 0; - std::vector overlaps; - for (int level = 1; level < config::kNumLevels - 1; level++) { - for (size_t i = 0; i < current_->files_[level].size(); i++) { - const FileMetaData* f = current_->files_[level][i]; - current_->GetOverlappingInputs(level+1, &f->smallest, &f->largest, - &overlaps); - const int64_t sum = TotalFileSize(overlaps); - if (sum > result) { - result = sum; - } - } - } - return result; -} - -// Stores the minimal range that covers all entries in inputs in -// *smallest, *largest. -// REQUIRES: inputs is not empty -void VersionSet::GetRange(const std::vector& inputs, - InternalKey* smallest, - InternalKey* largest) { - assert(!inputs.empty()); - smallest->Clear(); - largest->Clear(); - for (size_t i = 0; i < inputs.size(); i++) { - FileMetaData* f = inputs[i]; - if (i == 0) { - *smallest = f->smallest; - *largest = f->largest; - } else { - if (icmp_.Compare(f->smallest, *smallest) < 0) { - *smallest = f->smallest; - } - if (icmp_.Compare(f->largest, *largest) > 0) { - *largest = f->largest; - } - } - } -} - -// Stores the minimal range that covers all entries in inputs1 and inputs2 -// in *smallest, *largest. -// REQUIRES: inputs is not empty -void VersionSet::GetRange2(const std::vector& inputs1, - const std::vector& inputs2, - InternalKey* smallest, - InternalKey* largest) { - std::vector all = inputs1; - all.insert(all.end(), inputs2.begin(), inputs2.end()); - GetRange(all, smallest, largest); -} - -Iterator* VersionSet::MakeInputIterator(Compaction* c) { - ReadOptions options; - options.verify_checksums = options_->paranoid_checks; - options.fill_cache = false; - - // Level-0 files have to be merged together. For other levels, - // we will make a concatenating iterator per level. - // TODO(opt): use concatenating iterator for level-0 if there is no overlap - const int space = (c->level() == 0 ? c->inputs_[0].size() + 1 : 2); - Iterator** list = new Iterator*[space]; - int num = 0; - for (int which = 0; which < 2; which++) { - if (!c->inputs_[which].empty()) { - if (c->level() + which == 0) { - const std::vector& files = c->inputs_[which]; - for (size_t i = 0; i < files.size(); i++) { - list[num++] = table_cache_->NewIterator( - options, files[i]->number, files[i]->file_size); - } - } else { - // Create concatenating iterator for the files from this level - list[num++] = NewTwoLevelIterator( - new Version::LevelFileNumIterator(icmp_, &c->inputs_[which]), - &GetFileIterator, table_cache_, options); - } - } - } - assert(num <= space); - Iterator* result = NewMergingIterator(&icmp_, list, num); - delete[] list; - return result; -} - -Compaction* VersionSet::PickCompaction() { - Compaction* c; - int level; - - // We prefer compactions triggered by too much data in a level over - // the compactions triggered by seeks. - const bool size_compaction = (current_->compaction_score_ >= 1); - const bool seek_compaction = (current_->file_to_compact_ != NULL); - if (size_compaction) { - level = current_->compaction_level_; - assert(level >= 0); - assert(level+1 < config::kNumLevels); - c = new Compaction(level); - - // Pick the first file that comes after compact_pointer_[level] - for (size_t i = 0; i < current_->files_[level].size(); i++) { - FileMetaData* f = current_->files_[level][i]; - if (compact_pointer_[level].empty() || - icmp_.Compare(f->largest.Encode(), compact_pointer_[level]) > 0) { - c->inputs_[0].push_back(f); - break; - } - } - if (c->inputs_[0].empty()) { - // Wrap-around to the beginning of the key space - c->inputs_[0].push_back(current_->files_[level][0]); - } - } else if (seek_compaction) { - level = current_->file_to_compact_level_; - c = new Compaction(level); - c->inputs_[0].push_back(current_->file_to_compact_); - } else { - return NULL; - } - - c->input_version_ = current_; - c->input_version_->Ref(); - - // Files in level 0 may overlap each other, so pick up all overlapping ones - if (level == 0) { - InternalKey smallest, largest; - GetRange(c->inputs_[0], &smallest, &largest); - // Note that the next call will discard the file we placed in - // c->inputs_[0] earlier and replace it with an overlapping set - // which will include the picked file. - current_->GetOverlappingInputs(0, &smallest, &largest, &c->inputs_[0]); - assert(!c->inputs_[0].empty()); - } - - SetupOtherInputs(c); - - return c; -} - -void VersionSet::SetupOtherInputs(Compaction* c) { - const int level = c->level(); - InternalKey smallest, largest; - GetRange(c->inputs_[0], &smallest, &largest); - - current_->GetOverlappingInputs(level+1, &smallest, &largest, &c->inputs_[1]); - - // Get entire range covered by compaction - InternalKey all_start, all_limit; - GetRange2(c->inputs_[0], c->inputs_[1], &all_start, &all_limit); - - // See if we can grow the number of inputs in "level" without - // changing the number of "level+1" files we pick up. - if (!c->inputs_[1].empty()) { - std::vector expanded0; - current_->GetOverlappingInputs(level, &all_start, &all_limit, &expanded0); - const int64_t inputs0_size = TotalFileSize(c->inputs_[0]); - const int64_t inputs1_size = TotalFileSize(c->inputs_[1]); - const int64_t expanded0_size = TotalFileSize(expanded0); - if (expanded0.size() > c->inputs_[0].size() && - inputs1_size + expanded0_size < kExpandedCompactionByteSizeLimit) { - InternalKey new_start, new_limit; - GetRange(expanded0, &new_start, &new_limit); - std::vector expanded1; - current_->GetOverlappingInputs(level+1, &new_start, &new_limit, - &expanded1); - if (expanded1.size() == c->inputs_[1].size()) { - Log(options_->info_log, - "Expanding@%d %d+%d (%ld+%ld bytes) to %d+%d (%ld+%ld bytes)\n", - level, - int(c->inputs_[0].size()), - int(c->inputs_[1].size()), - long(inputs0_size), long(inputs1_size), - int(expanded0.size()), - int(expanded1.size()), - long(expanded0_size), long(inputs1_size)); - smallest = new_start; - largest = new_limit; - c->inputs_[0] = expanded0; - c->inputs_[1] = expanded1; - GetRange2(c->inputs_[0], c->inputs_[1], &all_start, &all_limit); - } - } - } - - // Compute the set of grandparent files that overlap this compaction - // (parent == level+1; grandparent == level+2) - if (level + 2 < config::kNumLevels) { - current_->GetOverlappingInputs(level + 2, &all_start, &all_limit, - &c->grandparents_); - } - - if (false) { - Log(options_->info_log, "Compacting %d '%s' .. '%s'", - level, - smallest.DebugString().c_str(), - largest.DebugString().c_str()); - } - - // Update the place where we will do the next compaction for this level. - // We update this immediately instead of waiting for the VersionEdit - // to be applied so that if the compaction fails, we will try a different - // key range next time. - compact_pointer_[level] = largest.Encode().ToString(); - c->edit_.SetCompactPointer(level, largest); -} - -Compaction* VersionSet::CompactRange( - int level, - const InternalKey* begin, - const InternalKey* end) { - std::vector inputs; - current_->GetOverlappingInputs(level, begin, end, &inputs); - if (inputs.empty()) { - return NULL; - } - - // Avoid compacting too much in one shot in case the range is large. - // But we cannot do this for level-0 since level-0 files can overlap - // and we must not pick one file and drop another older file if the - // two files overlap. - if (level > 0) { - const uint64_t limit = MaxFileSizeForLevel(level); - uint64_t total = 0; - for (size_t i = 0; i < inputs.size(); i++) { - uint64_t s = inputs[i]->file_size; - total += s; - if (total >= limit) { - inputs.resize(i + 1); - break; - } - } - } - - Compaction* c = new Compaction(level); - c->input_version_ = current_; - c->input_version_->Ref(); - c->inputs_[0] = inputs; - SetupOtherInputs(c); - return c; -} - -Compaction::Compaction(int level) - : level_(level), - max_output_file_size_(MaxFileSizeForLevel(level)), - input_version_(NULL), - grandparent_index_(0), - seen_key_(false), - overlapped_bytes_(0) { - for (int i = 0; i < config::kNumLevels; i++) { - level_ptrs_[i] = 0; - } -} - -Compaction::~Compaction() { - if (input_version_ != NULL) { - input_version_->Unref(); - } -} - -bool Compaction::IsTrivialMove() const { - // Avoid a move if there is lots of overlapping grandparent data. - // Otherwise, the move could create a parent file that will require - // a very expensive merge later on. - return (num_input_files(0) == 1 && - num_input_files(1) == 0 && - TotalFileSize(grandparents_) <= kMaxGrandParentOverlapBytes); -} - -void Compaction::AddInputDeletions(VersionEdit* edit) { - for (int which = 0; which < 2; which++) { - for (size_t i = 0; i < inputs_[which].size(); i++) { - edit->DeleteFile(level_ + which, inputs_[which][i]->number); - } - } -} - -bool Compaction::IsBaseLevelForKey(const Slice& user_key) { - // Maybe use binary search to find right entry instead of linear search? - const Comparator* user_cmp = input_version_->vset_->icmp_.user_comparator(); - for (int lvl = level_ + 2; lvl < config::kNumLevels; lvl++) { - const std::vector& files = input_version_->files_[lvl]; - for (; level_ptrs_[lvl] < files.size(); ) { - FileMetaData* f = files[level_ptrs_[lvl]]; - if (user_cmp->Compare(user_key, f->largest.user_key()) <= 0) { - // We've advanced far enough - if (user_cmp->Compare(user_key, f->smallest.user_key()) >= 0) { - // Key falls in this file's range, so definitely not base level - return false; - } - break; - } - level_ptrs_[lvl]++; - } - } - return true; -} - -bool Compaction::ShouldStopBefore(const Slice& internal_key) { - // Scan to find earliest grandparent file that contains key. - const InternalKeyComparator* icmp = &input_version_->vset_->icmp_; - while (grandparent_index_ < grandparents_.size() && - icmp->Compare(internal_key, - grandparents_[grandparent_index_]->largest.Encode()) > 0) { - if (seen_key_) { - overlapped_bytes_ += grandparents_[grandparent_index_]->file_size; - } - grandparent_index_++; - } - seen_key_ = true; - - if (overlapped_bytes_ > kMaxGrandParentOverlapBytes) { - // Too much overlap for current output; start new output - overlapped_bytes_ = 0; - return true; - } else { - return false; - } -} - -void Compaction::ReleaseInputs() { - if (input_version_ != NULL) { - input_version_->Unref(); - input_version_ = NULL; - } -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/version_set.h b/leveldb-1.18/db/version_set.h deleted file mode 100644 index 8dc14b8..0000000 --- a/leveldb-1.18/db/version_set.h +++ /dev/null @@ -1,396 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// The representation of a DBImpl consists of a set of Versions. The -// newest version is called "current". Older versions may be kept -// around to provide a consistent view to live iterators. -// -// Each Version keeps track of a set of Table files per level. The -// entire set of versions is maintained in a VersionSet. -// -// Version,VersionSet are thread-compatible, but require external -// synchronization on all accesses. - -#ifndef STORAGE_LEVELDB_DB_VERSION_SET_H_ -#define STORAGE_LEVELDB_DB_VERSION_SET_H_ - -#include -#include -#include -#include "db/dbformat.h" -#include "db/version_edit.h" -#include "port/port.h" -#include "port/thread_annotations.h" - -namespace leveldb { - -namespace log { class Writer; } - -class Compaction; -class Iterator; -class MemTable; -class TableBuilder; -class TableCache; -class Version; -class VersionSet; -class WritableFile; - -// Return the smallest index i such that files[i]->largest >= key. -// Return files.size() if there is no such file. -// REQUIRES: "files" contains a sorted list of non-overlapping files. -extern int FindFile(const InternalKeyComparator& icmp, - const std::vector& files, - const Slice& key); - -// Returns true iff some file in "files" overlaps the user key range -// [*smallest,*largest]. -// smallest==NULL represents a key smaller than all keys in the DB. -// largest==NULL represents a key largest than all keys in the DB. -// REQUIRES: If disjoint_sorted_files, files[] contains disjoint ranges -// in sorted order. -extern bool SomeFileOverlapsRange( - const InternalKeyComparator& icmp, - bool disjoint_sorted_files, - const std::vector& files, - const Slice* smallest_user_key, - const Slice* largest_user_key); - -class Version { - public: - // Append to *iters a sequence of iterators that will - // yield the contents of this Version when merged together. - // REQUIRES: This version has been saved (see VersionSet::SaveTo) - void AddIterators(const ReadOptions&, std::vector* iters); - - // Lookup the value for key. If found, store it in *val and - // return OK. Else return a non-OK status. Fills *stats. - // REQUIRES: lock is not held - struct GetStats { - FileMetaData* seek_file; - int seek_file_level; - }; - Status Get(const ReadOptions&, const LookupKey& key, std::string* val, - GetStats* stats); - - // Adds "stats" into the current state. Returns true if a new - // compaction may need to be triggered, false otherwise. - // REQUIRES: lock is held - bool UpdateStats(const GetStats& stats); - - // Record a sample of bytes read at the specified internal key. - // Samples are taken approximately once every config::kReadBytesPeriod - // bytes. Returns true if a new compaction may need to be triggered. - // REQUIRES: lock is held - bool RecordReadSample(Slice key); - - // Reference count management (so Versions do not disappear out from - // under live iterators) - void Ref(); - void Unref(); - - void GetOverlappingInputs( - int level, - const InternalKey* begin, // NULL means before all keys - const InternalKey* end, // NULL means after all keys - std::vector* inputs); - - // Returns true iff some file in the specified level overlaps - // some part of [*smallest_user_key,*largest_user_key]. - // smallest_user_key==NULL represents a key smaller than all keys in the DB. - // largest_user_key==NULL represents a key largest than all keys in the DB. - bool OverlapInLevel(int level, - const Slice* smallest_user_key, - const Slice* largest_user_key); - - // Return the level at which we should place a new memtable compaction - // result that covers the range [smallest_user_key,largest_user_key]. - int PickLevelForMemTableOutput(const Slice& smallest_user_key, - const Slice& largest_user_key); - - int NumFiles(int level) const { return files_[level].size(); } - - // Return a human readable string that describes this version's contents. - std::string DebugString() const; - - private: - friend class Compaction; - friend class VersionSet; - - class LevelFileNumIterator; - Iterator* NewConcatenatingIterator(const ReadOptions&, int level) const; - - // Call func(arg, level, f) for every file that overlaps user_key in - // order from newest to oldest. If an invocation of func returns - // false, makes no more calls. - // - // REQUIRES: user portion of internal_key == user_key. - void ForEachOverlapping(Slice user_key, Slice internal_key, - void* arg, - bool (*func)(void*, int, FileMetaData*)); - - VersionSet* vset_; // VersionSet to which this Version belongs - Version* next_; // Next version in linked list - Version* prev_; // Previous version in linked list - int refs_; // Number of live refs to this version - - // List of files per level - std::vector files_[config::kNumLevels]; - - // Next file to compact based on seek stats. - FileMetaData* file_to_compact_; - int file_to_compact_level_; - - // Level that should be compacted next and its compaction score. - // Score < 1 means compaction is not strictly needed. These fields - // are initialized by Finalize(). - double compaction_score_; - int compaction_level_; - - explicit Version(VersionSet* vset) - : vset_(vset), next_(this), prev_(this), refs_(0), - file_to_compact_(NULL), - file_to_compact_level_(-1), - compaction_score_(-1), - compaction_level_(-1) { - } - - ~Version(); - - // No copying allowed - Version(const Version&); - void operator=(const Version&); -}; - -class VersionSet { - public: - VersionSet(const std::string& dbname, - const Options* options, - TableCache* table_cache, - const InternalKeyComparator*); - ~VersionSet(); - - // Apply *edit to the current version to form a new descriptor that - // is both saved to persistent state and installed as the new - // current version. Will release *mu while actually writing to the file. - // REQUIRES: *mu is held on entry. - // REQUIRES: no other thread concurrently calls LogAndApply() - Status LogAndApply(VersionEdit* edit, port::Mutex* mu) - EXCLUSIVE_LOCKS_REQUIRED(mu); - - // Recover the last saved descriptor from persistent storage. - Status Recover(); - - // Return the current version. - Version* current() const { return current_; } - - // Return the current manifest file number - uint64_t ManifestFileNumber() const { return manifest_file_number_; } - - // Allocate and return a new file number - uint64_t NewFileNumber() { return next_file_number_++; } - - // Arrange to reuse "file_number" unless a newer file number has - // already been allocated. - // REQUIRES: "file_number" was returned by a call to NewFileNumber(). - void ReuseFileNumber(uint64_t file_number) { - if (next_file_number_ == file_number + 1) { - next_file_number_ = file_number; - } - } - - // Return the number of Table files at the specified level. - int NumLevelFiles(int level) const; - - // Return the combined file size of all files at the specified level. - int64_t NumLevelBytes(int level) const; - - // Return the last sequence number. - uint64_t LastSequence() const { return last_sequence_; } - - // Set the last sequence number to s. - void SetLastSequence(uint64_t s) { - assert(s >= last_sequence_); - last_sequence_ = s; - } - - // Mark the specified file number as used. - void MarkFileNumberUsed(uint64_t number); - - // Return the current log file number. - uint64_t LogNumber() const { return log_number_; } - - // Return the log file number for the log file that is currently - // being compacted, or zero if there is no such log file. - uint64_t PrevLogNumber() const { return prev_log_number_; } - - // Pick level and inputs for a new compaction. - // Returns NULL if there is no compaction to be done. - // Otherwise returns a pointer to a heap-allocated object that - // describes the compaction. Caller should delete the result. - Compaction* PickCompaction(); - - // Return a compaction object for compacting the range [begin,end] in - // the specified level. Returns NULL if there is nothing in that - // level that overlaps the specified range. Caller should delete - // the result. - Compaction* CompactRange( - int level, - const InternalKey* begin, - const InternalKey* end); - - // Return the maximum overlapping data (in bytes) at next level for any - // file at a level >= 1. - int64_t MaxNextLevelOverlappingBytes(); - - // Create an iterator that reads over the compaction inputs for "*c". - // The caller should delete the iterator when no longer needed. - Iterator* MakeInputIterator(Compaction* c); - - // Returns true iff some level needs a compaction. - bool NeedsCompaction() const { - Version* v = current_; - return (v->compaction_score_ >= 1) || (v->file_to_compact_ != NULL); - } - - // Add all files listed in any live version to *live. - // May also mutate some internal state. - void AddLiveFiles(std::set* live); - - // Return the approximate offset in the database of the data for - // "key" as of version "v". - uint64_t ApproximateOffsetOf(Version* v, const InternalKey& key); - - // Return a human-readable short (single-line) summary of the number - // of files per level. Uses *scratch as backing store. - struct LevelSummaryStorage { - char buffer[100]; - }; - const char* LevelSummary(LevelSummaryStorage* scratch) const; - - private: - class Builder; - - friend class Compaction; - friend class Version; - - void Finalize(Version* v); - - void GetRange(const std::vector& inputs, - InternalKey* smallest, - InternalKey* largest); - - void GetRange2(const std::vector& inputs1, - const std::vector& inputs2, - InternalKey* smallest, - InternalKey* largest); - - void SetupOtherInputs(Compaction* c); - - // Save current contents to *log - Status WriteSnapshot(log::Writer* log); - - void AppendVersion(Version* v); - - Env* const env_; - const std::string dbname_; - const Options* const options_; - TableCache* const table_cache_; - const InternalKeyComparator icmp_; - uint64_t next_file_number_; - uint64_t manifest_file_number_; - uint64_t last_sequence_; - uint64_t log_number_; - uint64_t prev_log_number_; // 0 or backing store for memtable being compacted - - // Opened lazily - WritableFile* descriptor_file_; - log::Writer* descriptor_log_; - Version dummy_versions_; // Head of circular doubly-linked list of versions. - Version* current_; // == dummy_versions_.prev_ - - // Per-level key at which the next compaction at that level should start. - // Either an empty string, or a valid InternalKey. - std::string compact_pointer_[config::kNumLevels]; - - // No copying allowed - VersionSet(const VersionSet&); - void operator=(const VersionSet&); -}; - -// A Compaction encapsulates information about a compaction. -class Compaction { - public: - ~Compaction(); - - // Return the level that is being compacted. Inputs from "level" - // and "level+1" will be merged to produce a set of "level+1" files. - int level() const { return level_; } - - // Return the object that holds the edits to the descriptor done - // by this compaction. - VersionEdit* edit() { return &edit_; } - - // "which" must be either 0 or 1 - int num_input_files(int which) const { return inputs_[which].size(); } - - // Return the ith input file at "level()+which" ("which" must be 0 or 1). - FileMetaData* input(int which, int i) const { return inputs_[which][i]; } - - // Maximum size of files to build during this compaction. - uint64_t MaxOutputFileSize() const { return max_output_file_size_; } - - // Is this a trivial compaction that can be implemented by just - // moving a single input file to the next level (no merging or splitting) - bool IsTrivialMove() const; - - // Add all inputs to this compaction as delete operations to *edit. - void AddInputDeletions(VersionEdit* edit); - - // Returns true if the information we have available guarantees that - // the compaction is producing data in "level+1" for which no data exists - // in levels greater than "level+1". - bool IsBaseLevelForKey(const Slice& user_key); - - // Returns true iff we should stop building the current output - // before processing "internal_key". - bool ShouldStopBefore(const Slice& internal_key); - - // Release the input version for the compaction, once the compaction - // is successful. - void ReleaseInputs(); - - private: - friend class Version; - friend class VersionSet; - - explicit Compaction(int level); - - int level_; - uint64_t max_output_file_size_; - Version* input_version_; - VersionEdit edit_; - - // Each compaction reads inputs from "level_" and "level_+1" - std::vector inputs_[2]; // The two sets of inputs - - // State used to check for number of of overlapping grandparent files - // (parent == level_ + 1, grandparent == level_ + 2) - std::vector grandparents_; - size_t grandparent_index_; // Index in grandparent_starts_ - bool seen_key_; // Some output key has been seen - int64_t overlapped_bytes_; // Bytes of overlap between current output - // and grandparent files - - // State for implementing IsBaseLevelForKey - - // level_ptrs_ holds indices into input_version_->levels_: our state - // is that we are positioned at one of the file ranges for each - // higher level than the ones involved in this compaction (i.e. for - // all L >= level_ + 2). - size_t level_ptrs_[config::kNumLevels]; -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_DB_VERSION_SET_H_ diff --git a/leveldb-1.18/db/version_set_test.cc b/leveldb-1.18/db/version_set_test.cc deleted file mode 100644 index 501e34d..0000000 --- a/leveldb-1.18/db/version_set_test.cc +++ /dev/null @@ -1,179 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "db/version_set.h" -#include "util/logging.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace leveldb { - -class FindFileTest { - public: - std::vector files_; - bool disjoint_sorted_files_; - - FindFileTest() : disjoint_sorted_files_(true) { } - - ~FindFileTest() { - for (int i = 0; i < files_.size(); i++) { - delete files_[i]; - } - } - - void Add(const char* smallest, const char* largest, - SequenceNumber smallest_seq = 100, - SequenceNumber largest_seq = 100) { - FileMetaData* f = new FileMetaData; - f->number = files_.size() + 1; - f->smallest = InternalKey(smallest, smallest_seq, kTypeValue); - f->largest = InternalKey(largest, largest_seq, kTypeValue); - files_.push_back(f); - } - - int Find(const char* key) { - InternalKey target(key, 100, kTypeValue); - InternalKeyComparator cmp(BytewiseComparator()); - return FindFile(cmp, files_, target.Encode()); - } - - bool Overlaps(const char* smallest, const char* largest) { - InternalKeyComparator cmp(BytewiseComparator()); - Slice s(smallest != NULL ? smallest : ""); - Slice l(largest != NULL ? largest : ""); - return SomeFileOverlapsRange(cmp, disjoint_sorted_files_, files_, - (smallest != NULL ? &s : NULL), - (largest != NULL ? &l : NULL)); - } -}; - -TEST(FindFileTest, Empty) { - ASSERT_EQ(0, Find("foo")); - ASSERT_TRUE(! Overlaps("a", "z")); - ASSERT_TRUE(! Overlaps(NULL, "z")); - ASSERT_TRUE(! Overlaps("a", NULL)); - ASSERT_TRUE(! Overlaps(NULL, NULL)); -} - -TEST(FindFileTest, Single) { - Add("p", "q"); - ASSERT_EQ(0, Find("a")); - ASSERT_EQ(0, Find("p")); - ASSERT_EQ(0, Find("p1")); - ASSERT_EQ(0, Find("q")); - ASSERT_EQ(1, Find("q1")); - ASSERT_EQ(1, Find("z")); - - ASSERT_TRUE(! Overlaps("a", "b")); - ASSERT_TRUE(! Overlaps("z1", "z2")); - ASSERT_TRUE(Overlaps("a", "p")); - ASSERT_TRUE(Overlaps("a", "q")); - ASSERT_TRUE(Overlaps("a", "z")); - ASSERT_TRUE(Overlaps("p", "p1")); - ASSERT_TRUE(Overlaps("p", "q")); - ASSERT_TRUE(Overlaps("p", "z")); - ASSERT_TRUE(Overlaps("p1", "p2")); - ASSERT_TRUE(Overlaps("p1", "z")); - ASSERT_TRUE(Overlaps("q", "q")); - ASSERT_TRUE(Overlaps("q", "q1")); - - ASSERT_TRUE(! Overlaps(NULL, "j")); - ASSERT_TRUE(! Overlaps("r", NULL)); - ASSERT_TRUE(Overlaps(NULL, "p")); - ASSERT_TRUE(Overlaps(NULL, "p1")); - ASSERT_TRUE(Overlaps("q", NULL)); - ASSERT_TRUE(Overlaps(NULL, NULL)); -} - - -TEST(FindFileTest, Multiple) { - Add("150", "200"); - Add("200", "250"); - Add("300", "350"); - Add("400", "450"); - ASSERT_EQ(0, Find("100")); - ASSERT_EQ(0, Find("150")); - ASSERT_EQ(0, Find("151")); - ASSERT_EQ(0, Find("199")); - ASSERT_EQ(0, Find("200")); - ASSERT_EQ(1, Find("201")); - ASSERT_EQ(1, Find("249")); - ASSERT_EQ(1, Find("250")); - ASSERT_EQ(2, Find("251")); - ASSERT_EQ(2, Find("299")); - ASSERT_EQ(2, Find("300")); - ASSERT_EQ(2, Find("349")); - ASSERT_EQ(2, Find("350")); - ASSERT_EQ(3, Find("351")); - ASSERT_EQ(3, Find("400")); - ASSERT_EQ(3, Find("450")); - ASSERT_EQ(4, Find("451")); - - ASSERT_TRUE(! Overlaps("100", "149")); - ASSERT_TRUE(! Overlaps("251", "299")); - ASSERT_TRUE(! Overlaps("451", "500")); - ASSERT_TRUE(! Overlaps("351", "399")); - - ASSERT_TRUE(Overlaps("100", "150")); - ASSERT_TRUE(Overlaps("100", "200")); - ASSERT_TRUE(Overlaps("100", "300")); - ASSERT_TRUE(Overlaps("100", "400")); - ASSERT_TRUE(Overlaps("100", "500")); - ASSERT_TRUE(Overlaps("375", "400")); - ASSERT_TRUE(Overlaps("450", "450")); - ASSERT_TRUE(Overlaps("450", "500")); -} - -TEST(FindFileTest, MultipleNullBoundaries) { - Add("150", "200"); - Add("200", "250"); - Add("300", "350"); - Add("400", "450"); - ASSERT_TRUE(! Overlaps(NULL, "149")); - ASSERT_TRUE(! Overlaps("451", NULL)); - ASSERT_TRUE(Overlaps(NULL, NULL)); - ASSERT_TRUE(Overlaps(NULL, "150")); - ASSERT_TRUE(Overlaps(NULL, "199")); - ASSERT_TRUE(Overlaps(NULL, "200")); - ASSERT_TRUE(Overlaps(NULL, "201")); - ASSERT_TRUE(Overlaps(NULL, "400")); - ASSERT_TRUE(Overlaps(NULL, "800")); - ASSERT_TRUE(Overlaps("100", NULL)); - ASSERT_TRUE(Overlaps("200", NULL)); - ASSERT_TRUE(Overlaps("449", NULL)); - ASSERT_TRUE(Overlaps("450", NULL)); -} - -TEST(FindFileTest, OverlapSequenceChecks) { - Add("200", "200", 5000, 3000); - ASSERT_TRUE(! Overlaps("199", "199")); - ASSERT_TRUE(! Overlaps("201", "300")); - ASSERT_TRUE(Overlaps("200", "200")); - ASSERT_TRUE(Overlaps("190", "200")); - ASSERT_TRUE(Overlaps("200", "210")); -} - -TEST(FindFileTest, OverlappingFiles) { - Add("150", "600"); - Add("400", "500"); - disjoint_sorted_files_ = false; - ASSERT_TRUE(! Overlaps("100", "149")); - ASSERT_TRUE(! Overlaps("601", "700")); - ASSERT_TRUE(Overlaps("100", "150")); - ASSERT_TRUE(Overlaps("100", "200")); - ASSERT_TRUE(Overlaps("100", "300")); - ASSERT_TRUE(Overlaps("100", "400")); - ASSERT_TRUE(Overlaps("100", "500")); - ASSERT_TRUE(Overlaps("375", "400")); - ASSERT_TRUE(Overlaps("450", "450")); - ASSERT_TRUE(Overlaps("450", "500")); - ASSERT_TRUE(Overlaps("450", "700")); - ASSERT_TRUE(Overlaps("600", "700")); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/db/write_batch.cc b/leveldb-1.18/db/write_batch.cc deleted file mode 100644 index 33f4a42..0000000 --- a/leveldb-1.18/db/write_batch.cc +++ /dev/null @@ -1,147 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// WriteBatch::rep_ := -// sequence: fixed64 -// count: fixed32 -// data: record[count] -// record := -// kTypeValue varstring varstring | -// kTypeDeletion varstring -// varstring := -// len: varint32 -// data: uint8[len] - -#include "leveldb/write_batch.h" - -#include "leveldb/db.h" -#include "db/dbformat.h" -#include "db/memtable.h" -#include "db/write_batch_internal.h" -#include "util/coding.h" - -namespace leveldb { - -// WriteBatch header has an 8-byte sequence number followed by a 4-byte count. -static const size_t kHeader = 12; - -WriteBatch::WriteBatch() { - Clear(); -} - -WriteBatch::~WriteBatch() { } - -WriteBatch::Handler::~Handler() { } - -void WriteBatch::Clear() { - rep_.clear(); - rep_.resize(kHeader); -} - -Status WriteBatch::Iterate(Handler* handler) const { - Slice input(rep_); - if (input.size() < kHeader) { - return Status::Corruption("malformed WriteBatch (too small)"); - } - - input.remove_prefix(kHeader); - Slice key, value; - int found = 0; - while (!input.empty()) { - found++; - char tag = input[0]; - input.remove_prefix(1); - switch (tag) { - case kTypeValue: - if (GetLengthPrefixedSlice(&input, &key) && - GetLengthPrefixedSlice(&input, &value)) { - handler->Put(key, value); - } else { - return Status::Corruption("bad WriteBatch Put"); - } - break; - case kTypeDeletion: - if (GetLengthPrefixedSlice(&input, &key)) { - handler->Delete(key); - } else { - return Status::Corruption("bad WriteBatch Delete"); - } - break; - default: - return Status::Corruption("unknown WriteBatch tag"); - } - } - if (found != WriteBatchInternal::Count(this)) { - return Status::Corruption("WriteBatch has wrong count"); - } else { - return Status::OK(); - } -} - -int WriteBatchInternal::Count(const WriteBatch* b) { - return DecodeFixed32(b->rep_.data() + 8); -} - -void WriteBatchInternal::SetCount(WriteBatch* b, int n) { - EncodeFixed32(&b->rep_[8], n); -} - -SequenceNumber WriteBatchInternal::Sequence(const WriteBatch* b) { - return SequenceNumber(DecodeFixed64(b->rep_.data())); -} - -void WriteBatchInternal::SetSequence(WriteBatch* b, SequenceNumber seq) { - EncodeFixed64(&b->rep_[0], seq); -} - -void WriteBatch::Put(const Slice& key, const Slice& value) { - WriteBatchInternal::SetCount(this, WriteBatchInternal::Count(this) + 1); - rep_.push_back(static_cast(kTypeValue)); - PutLengthPrefixedSlice(&rep_, key); - PutLengthPrefixedSlice(&rep_, value); -} - -void WriteBatch::Delete(const Slice& key) { - WriteBatchInternal::SetCount(this, WriteBatchInternal::Count(this) + 1); - rep_.push_back(static_cast(kTypeDeletion)); - PutLengthPrefixedSlice(&rep_, key); -} - -namespace { -class MemTableInserter : public WriteBatch::Handler { - public: - SequenceNumber sequence_; - MemTable* mem_; - - virtual void Put(const Slice& key, const Slice& value) { - mem_->Add(sequence_, kTypeValue, key, value); - sequence_++; - } - virtual void Delete(const Slice& key) { - mem_->Add(sequence_, kTypeDeletion, key, Slice()); - sequence_++; - } -}; -} // namespace - -Status WriteBatchInternal::InsertInto(const WriteBatch* b, - MemTable* memtable) { - MemTableInserter inserter; - inserter.sequence_ = WriteBatchInternal::Sequence(b); - inserter.mem_ = memtable; - return b->Iterate(&inserter); -} - -void WriteBatchInternal::SetContents(WriteBatch* b, const Slice& contents) { - assert(contents.size() >= kHeader); - b->rep_.assign(contents.data(), contents.size()); -} - -void WriteBatchInternal::Append(WriteBatch* dst, const WriteBatch* src) { - SetCount(dst, Count(dst) + Count(src)); - assert(src->rep_.size() >= kHeader); - dst->rep_.append(src->rep_.data() + kHeader, src->rep_.size() - kHeader); -} - -} // namespace leveldb diff --git a/leveldb-1.18/db/write_batch_internal.h b/leveldb-1.18/db/write_batch_internal.h deleted file mode 100644 index 310a3c8..0000000 --- a/leveldb-1.18/db/write_batch_internal.h +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_ -#define STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_ - -#include "leveldb/write_batch.h" - -namespace leveldb { - -class MemTable; - -// WriteBatchInternal provides static methods for manipulating a -// WriteBatch that we don't want in the public WriteBatch interface. -class WriteBatchInternal { - public: - // Return the number of entries in the batch. - static int Count(const WriteBatch* batch); - - // Set the count for the number of entries in the batch. - static void SetCount(WriteBatch* batch, int n); - - // Return the sequence number for the start of this batch. - static SequenceNumber Sequence(const WriteBatch* batch); - - // Store the specified number as the sequence number for the start of - // this batch. - static void SetSequence(WriteBatch* batch, SequenceNumber seq); - - static Slice Contents(const WriteBatch* batch) { - return Slice(batch->rep_); - } - - static size_t ByteSize(const WriteBatch* batch) { - return batch->rep_.size(); - } - - static void SetContents(WriteBatch* batch, const Slice& contents); - - static Status InsertInto(const WriteBatch* batch, MemTable* memtable); - - static void Append(WriteBatch* dst, const WriteBatch* src); -}; - -} // namespace leveldb - - -#endif // STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_ diff --git a/leveldb-1.18/db/write_batch_test.cc b/leveldb-1.18/db/write_batch_test.cc deleted file mode 100644 index 9064e3d..0000000 --- a/leveldb-1.18/db/write_batch_test.cc +++ /dev/null @@ -1,120 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/db.h" - -#include "db/memtable.h" -#include "db/write_batch_internal.h" -#include "leveldb/env.h" -#include "util/logging.h" -#include "util/testharness.h" - -namespace leveldb { - -static std::string PrintContents(WriteBatch* b) { - InternalKeyComparator cmp(BytewiseComparator()); - MemTable* mem = new MemTable(cmp); - mem->Ref(); - std::string state; - Status s = WriteBatchInternal::InsertInto(b, mem); - int count = 0; - Iterator* iter = mem->NewIterator(); - for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { - ParsedInternalKey ikey; - ASSERT_TRUE(ParseInternalKey(iter->key(), &ikey)); - switch (ikey.type) { - case kTypeValue: - state.append("Put("); - state.append(ikey.user_key.ToString()); - state.append(", "); - state.append(iter->value().ToString()); - state.append(")"); - count++; - break; - case kTypeDeletion: - state.append("Delete("); - state.append(ikey.user_key.ToString()); - state.append(")"); - count++; - break; - } - state.append("@"); - state.append(NumberToString(ikey.sequence)); - } - delete iter; - if (!s.ok()) { - state.append("ParseError()"); - } else if (count != WriteBatchInternal::Count(b)) { - state.append("CountMismatch()"); - } - mem->Unref(); - return state; -} - -class WriteBatchTest { }; - -TEST(WriteBatchTest, Empty) { - WriteBatch batch; - ASSERT_EQ("", PrintContents(&batch)); - ASSERT_EQ(0, WriteBatchInternal::Count(&batch)); -} - -TEST(WriteBatchTest, Multiple) { - WriteBatch batch; - batch.Put(Slice("foo"), Slice("bar")); - batch.Delete(Slice("box")); - batch.Put(Slice("baz"), Slice("boo")); - WriteBatchInternal::SetSequence(&batch, 100); - ASSERT_EQ(100, WriteBatchInternal::Sequence(&batch)); - ASSERT_EQ(3, WriteBatchInternal::Count(&batch)); - ASSERT_EQ("Put(baz, boo)@102" - "Delete(box)@101" - "Put(foo, bar)@100", - PrintContents(&batch)); -} - -TEST(WriteBatchTest, Corruption) { - WriteBatch batch; - batch.Put(Slice("foo"), Slice("bar")); - batch.Delete(Slice("box")); - WriteBatchInternal::SetSequence(&batch, 200); - Slice contents = WriteBatchInternal::Contents(&batch); - WriteBatchInternal::SetContents(&batch, - Slice(contents.data(),contents.size()-1)); - ASSERT_EQ("Put(foo, bar)@200" - "ParseError()", - PrintContents(&batch)); -} - -TEST(WriteBatchTest, Append) { - WriteBatch b1, b2; - WriteBatchInternal::SetSequence(&b1, 200); - WriteBatchInternal::SetSequence(&b2, 300); - WriteBatchInternal::Append(&b1, &b2); - ASSERT_EQ("", - PrintContents(&b1)); - b2.Put("a", "va"); - WriteBatchInternal::Append(&b1, &b2); - ASSERT_EQ("Put(a, va)@200", - PrintContents(&b1)); - b2.Clear(); - b2.Put("b", "vb"); - WriteBatchInternal::Append(&b1, &b2); - ASSERT_EQ("Put(a, va)@200" - "Put(b, vb)@201", - PrintContents(&b1)); - b2.Delete("foo"); - WriteBatchInternal::Append(&b1, &b2); - ASSERT_EQ("Put(a, va)@200" - "Put(b, vb)@202" - "Put(b, vb)@201" - "Delete(foo)@203", - PrintContents(&b1)); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/doc/bench/db_bench_sqlite3.cc b/leveldb-1.18/doc/bench/db_bench_sqlite3.cc deleted file mode 100644 index e63aaa8..0000000 --- a/leveldb-1.18/doc/bench/db_bench_sqlite3.cc +++ /dev/null @@ -1,718 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include -#include -#include "util/histogram.h" -#include "util/random.h" -#include "util/testutil.h" - -// Comma-separated list of operations to run in the specified order -// Actual benchmarks: -// -// fillseq -- write N values in sequential key order in async mode -// fillseqsync -- write N/100 values in sequential key order in sync mode -// fillseqbatch -- batch write N values in sequential key order in async mode -// fillrandom -- write N values in random key order in async mode -// fillrandsync -- write N/100 values in random key order in sync mode -// fillrandbatch -- batch write N values in sequential key order in async mode -// overwrite -- overwrite N values in random key order in async mode -// fillrand100K -- write N/1000 100K values in random order in async mode -// fillseq100K -- write N/1000 100K values in sequential order in async mode -// readseq -- read N times sequentially -// readrandom -- read N times in random order -// readrand100K -- read N/1000 100K values in sequential order in async mode -static const char* FLAGS_benchmarks = - "fillseq," - "fillseqsync," - "fillseqbatch," - "fillrandom," - "fillrandsync," - "fillrandbatch," - "overwrite," - "overwritebatch," - "readrandom," - "readseq," - "fillrand100K," - "fillseq100K," - "readseq," - "readrand100K," - ; - -// Number of key/values to place in database -static int FLAGS_num = 1000000; - -// Number of read operations to do. If negative, do FLAGS_num reads. -static int FLAGS_reads = -1; - -// Size of each value -static int FLAGS_value_size = 100; - -// Print histogram of operation timings -static bool FLAGS_histogram = false; - -// Arrange to generate values that shrink to this fraction of -// their original size after compression -static double FLAGS_compression_ratio = 0.5; - -// Page size. Default 1 KB. -static int FLAGS_page_size = 1024; - -// Number of pages. -// Default cache size = FLAGS_page_size * FLAGS_num_pages = 4 MB. -static int FLAGS_num_pages = 4096; - -// If true, do not destroy the existing database. If you set this -// flag and also specify a benchmark that wants a fresh database, that -// benchmark will fail. -static bool FLAGS_use_existing_db = false; - -// If true, we allow batch writes to occur -static bool FLAGS_transaction = true; - -// If true, we enable Write-Ahead Logging -static bool FLAGS_WAL_enabled = true; - -// Use the db with the following name. -static const char* FLAGS_db = NULL; - -inline -static void ExecErrorCheck(int status, char *err_msg) { - if (status != SQLITE_OK) { - fprintf(stderr, "SQL error: %s\n", err_msg); - sqlite3_free(err_msg); - exit(1); - } -} - -inline -static void StepErrorCheck(int status) { - if (status != SQLITE_DONE) { - fprintf(stderr, "SQL step error: status = %d\n", status); - exit(1); - } -} - -inline -static void ErrorCheck(int status) { - if (status != SQLITE_OK) { - fprintf(stderr, "sqlite3 error: status = %d\n", status); - exit(1); - } -} - -inline -static void WalCheckpoint(sqlite3* db_) { - // Flush all writes to disk - if (FLAGS_WAL_enabled) { - sqlite3_wal_checkpoint_v2(db_, NULL, SQLITE_CHECKPOINT_FULL, NULL, NULL); - } -} - -namespace leveldb { - -// Helper for quickly generating random data. -namespace { -class RandomGenerator { - private: - std::string data_; - int pos_; - - public: - RandomGenerator() { - // We use a limited amount of data over and over again and ensure - // that it is larger than the compression window (32KB), and also - // large enough to serve all typical value sizes we want to write. - Random rnd(301); - std::string piece; - while (data_.size() < 1048576) { - // Add a short fragment that is as compressible as specified - // by FLAGS_compression_ratio. - test::CompressibleString(&rnd, FLAGS_compression_ratio, 100, &piece); - data_.append(piece); - } - pos_ = 0; - } - - Slice Generate(int len) { - if (pos_ + len > data_.size()) { - pos_ = 0; - assert(len < data_.size()); - } - pos_ += len; - return Slice(data_.data() + pos_ - len, len); - } -}; - -static Slice TrimSpace(Slice s) { - int start = 0; - while (start < s.size() && isspace(s[start])) { - start++; - } - int limit = s.size(); - while (limit > start && isspace(s[limit-1])) { - limit--; - } - return Slice(s.data() + start, limit - start); -} - -} // namespace - -class Benchmark { - private: - sqlite3* db_; - int db_num_; - int num_; - int reads_; - double start_; - double last_op_finish_; - int64_t bytes_; - std::string message_; - Histogram hist_; - RandomGenerator gen_; - Random rand_; - - // State kept for progress messages - int done_; - int next_report_; // When to report next - - void PrintHeader() { - const int kKeySize = 16; - PrintEnvironment(); - fprintf(stdout, "Keys: %d bytes each\n", kKeySize); - fprintf(stdout, "Values: %d bytes each\n", FLAGS_value_size); - fprintf(stdout, "Entries: %d\n", num_); - fprintf(stdout, "RawSize: %.1f MB (estimated)\n", - ((static_cast(kKeySize + FLAGS_value_size) * num_) - / 1048576.0)); - PrintWarnings(); - fprintf(stdout, "------------------------------------------------\n"); - } - - void PrintWarnings() { -#if defined(__GNUC__) && !defined(__OPTIMIZE__) - fprintf(stdout, - "WARNING: Optimization is disabled: benchmarks unnecessarily slow\n" - ); -#endif -#ifndef NDEBUG - fprintf(stdout, - "WARNING: Assertions are enabled; benchmarks unnecessarily slow\n"); -#endif - } - - void PrintEnvironment() { - fprintf(stderr, "SQLite: version %s\n", SQLITE_VERSION); - -#if defined(__linux) - time_t now = time(NULL); - fprintf(stderr, "Date: %s", ctime(&now)); // ctime() adds newline - - FILE* cpuinfo = fopen("/proc/cpuinfo", "r"); - if (cpuinfo != NULL) { - char line[1000]; - int num_cpus = 0; - std::string cpu_type; - std::string cache_size; - while (fgets(line, sizeof(line), cpuinfo) != NULL) { - const char* sep = strchr(line, ':'); - if (sep == NULL) { - continue; - } - Slice key = TrimSpace(Slice(line, sep - 1 - line)); - Slice val = TrimSpace(Slice(sep + 1)); - if (key == "model name") { - ++num_cpus; - cpu_type = val.ToString(); - } else if (key == "cache size") { - cache_size = val.ToString(); - } - } - fclose(cpuinfo); - fprintf(stderr, "CPU: %d * %s\n", num_cpus, cpu_type.c_str()); - fprintf(stderr, "CPUCache: %s\n", cache_size.c_str()); - } -#endif - } - - void Start() { - start_ = Env::Default()->NowMicros() * 1e-6; - bytes_ = 0; - message_.clear(); - last_op_finish_ = start_; - hist_.Clear(); - done_ = 0; - next_report_ = 100; - } - - void FinishedSingleOp() { - if (FLAGS_histogram) { - double now = Env::Default()->NowMicros() * 1e-6; - double micros = (now - last_op_finish_) * 1e6; - hist_.Add(micros); - if (micros > 20000) { - fprintf(stderr, "long op: %.1f micros%30s\r", micros, ""); - fflush(stderr); - } - last_op_finish_ = now; - } - - done_++; - if (done_ >= next_report_) { - if (next_report_ < 1000) next_report_ += 100; - else if (next_report_ < 5000) next_report_ += 500; - else if (next_report_ < 10000) next_report_ += 1000; - else if (next_report_ < 50000) next_report_ += 5000; - else if (next_report_ < 100000) next_report_ += 10000; - else if (next_report_ < 500000) next_report_ += 50000; - else next_report_ += 100000; - fprintf(stderr, "... finished %d ops%30s\r", done_, ""); - fflush(stderr); - } - } - - void Stop(const Slice& name) { - double finish = Env::Default()->NowMicros() * 1e-6; - - // Pretend at least one op was done in case we are running a benchmark - // that does not call FinishedSingleOp(). - if (done_ < 1) done_ = 1; - - if (bytes_ > 0) { - char rate[100]; - snprintf(rate, sizeof(rate), "%6.1f MB/s", - (bytes_ / 1048576.0) / (finish - start_)); - if (!message_.empty()) { - message_ = std::string(rate) + " " + message_; - } else { - message_ = rate; - } - } - - fprintf(stdout, "%-12s : %11.3f micros/op;%s%s\n", - name.ToString().c_str(), - (finish - start_) * 1e6 / done_, - (message_.empty() ? "" : " "), - message_.c_str()); - if (FLAGS_histogram) { - fprintf(stdout, "Microseconds per op:\n%s\n", hist_.ToString().c_str()); - } - fflush(stdout); - } - - public: - enum Order { - SEQUENTIAL, - RANDOM - }; - enum DBState { - FRESH, - EXISTING - }; - - Benchmark() - : db_(NULL), - db_num_(0), - num_(FLAGS_num), - reads_(FLAGS_reads < 0 ? FLAGS_num : FLAGS_reads), - bytes_(0), - rand_(301) { - std::vector files; - std::string test_dir; - Env::Default()->GetTestDirectory(&test_dir); - Env::Default()->GetChildren(test_dir, &files); - if (!FLAGS_use_existing_db) { - for (int i = 0; i < files.size(); i++) { - if (Slice(files[i]).starts_with("dbbench_sqlite3")) { - std::string file_name(test_dir); - file_name += "/"; - file_name += files[i]; - Env::Default()->DeleteFile(file_name.c_str()); - } - } - } - } - - ~Benchmark() { - int status = sqlite3_close(db_); - ErrorCheck(status); - } - - void Run() { - PrintHeader(); - Open(); - - const char* benchmarks = FLAGS_benchmarks; - while (benchmarks != NULL) { - const char* sep = strchr(benchmarks, ','); - Slice name; - if (sep == NULL) { - name = benchmarks; - benchmarks = NULL; - } else { - name = Slice(benchmarks, sep - benchmarks); - benchmarks = sep + 1; - } - - bytes_ = 0; - Start(); - - bool known = true; - bool write_sync = false; - if (name == Slice("fillseq")) { - Write(write_sync, SEQUENTIAL, FRESH, num_, FLAGS_value_size, 1); - WalCheckpoint(db_); - } else if (name == Slice("fillseqbatch")) { - Write(write_sync, SEQUENTIAL, FRESH, num_, FLAGS_value_size, 1000); - WalCheckpoint(db_); - } else if (name == Slice("fillrandom")) { - Write(write_sync, RANDOM, FRESH, num_, FLAGS_value_size, 1); - WalCheckpoint(db_); - } else if (name == Slice("fillrandbatch")) { - Write(write_sync, RANDOM, FRESH, num_, FLAGS_value_size, 1000); - WalCheckpoint(db_); - } else if (name == Slice("overwrite")) { - Write(write_sync, RANDOM, EXISTING, num_, FLAGS_value_size, 1); - WalCheckpoint(db_); - } else if (name == Slice("overwritebatch")) { - Write(write_sync, RANDOM, EXISTING, num_, FLAGS_value_size, 1000); - WalCheckpoint(db_); - } else if (name == Slice("fillrandsync")) { - write_sync = true; - Write(write_sync, RANDOM, FRESH, num_ / 100, FLAGS_value_size, 1); - WalCheckpoint(db_); - } else if (name == Slice("fillseqsync")) { - write_sync = true; - Write(write_sync, SEQUENTIAL, FRESH, num_ / 100, FLAGS_value_size, 1); - WalCheckpoint(db_); - } else if (name == Slice("fillrand100K")) { - Write(write_sync, RANDOM, FRESH, num_ / 1000, 100 * 1000, 1); - WalCheckpoint(db_); - } else if (name == Slice("fillseq100K")) { - Write(write_sync, SEQUENTIAL, FRESH, num_ / 1000, 100 * 1000, 1); - WalCheckpoint(db_); - } else if (name == Slice("readseq")) { - ReadSequential(); - } else if (name == Slice("readrandom")) { - Read(RANDOM, 1); - } else if (name == Slice("readrand100K")) { - int n = reads_; - reads_ /= 1000; - Read(RANDOM, 1); - reads_ = n; - } else { - known = false; - if (name != Slice()) { // No error message for empty name - fprintf(stderr, "unknown benchmark '%s'\n", name.ToString().c_str()); - } - } - if (known) { - Stop(name); - } - } - } - - void Open() { - assert(db_ == NULL); - - int status; - char file_name[100]; - char* err_msg = NULL; - db_num_++; - - // Open database - std::string tmp_dir; - Env::Default()->GetTestDirectory(&tmp_dir); - snprintf(file_name, sizeof(file_name), - "%s/dbbench_sqlite3-%d.db", - tmp_dir.c_str(), - db_num_); - status = sqlite3_open(file_name, &db_); - if (status) { - fprintf(stderr, "open error: %s\n", sqlite3_errmsg(db_)); - exit(1); - } - - // Change SQLite cache size - char cache_size[100]; - snprintf(cache_size, sizeof(cache_size), "PRAGMA cache_size = %d", - FLAGS_num_pages); - status = sqlite3_exec(db_, cache_size, NULL, NULL, &err_msg); - ExecErrorCheck(status, err_msg); - - // FLAGS_page_size is defaulted to 1024 - if (FLAGS_page_size != 1024) { - char page_size[100]; - snprintf(page_size, sizeof(page_size), "PRAGMA page_size = %d", - FLAGS_page_size); - status = sqlite3_exec(db_, page_size, NULL, NULL, &err_msg); - ExecErrorCheck(status, err_msg); - } - - // Change journal mode to WAL if WAL enabled flag is on - if (FLAGS_WAL_enabled) { - std::string WAL_stmt = "PRAGMA journal_mode = WAL"; - - // LevelDB's default cache size is a combined 4 MB - std::string WAL_checkpoint = "PRAGMA wal_autocheckpoint = 4096"; - status = sqlite3_exec(db_, WAL_stmt.c_str(), NULL, NULL, &err_msg); - ExecErrorCheck(status, err_msg); - status = sqlite3_exec(db_, WAL_checkpoint.c_str(), NULL, NULL, &err_msg); - ExecErrorCheck(status, err_msg); - } - - // Change locking mode to exclusive and create tables/index for database - std::string locking_stmt = "PRAGMA locking_mode = EXCLUSIVE"; - std::string create_stmt = - "CREATE TABLE test (key blob, value blob, PRIMARY KEY(key))"; - std::string stmt_array[] = { locking_stmt, create_stmt }; - int stmt_array_length = sizeof(stmt_array) / sizeof(std::string); - for (int i = 0; i < stmt_array_length; i++) { - status = sqlite3_exec(db_, stmt_array[i].c_str(), NULL, NULL, &err_msg); - ExecErrorCheck(status, err_msg); - } - } - - void Write(bool write_sync, Order order, DBState state, - int num_entries, int value_size, int entries_per_batch) { - // Create new database if state == FRESH - if (state == FRESH) { - if (FLAGS_use_existing_db) { - message_ = "skipping (--use_existing_db is true)"; - return; - } - sqlite3_close(db_); - db_ = NULL; - Open(); - Start(); - } - - if (num_entries != num_) { - char msg[100]; - snprintf(msg, sizeof(msg), "(%d ops)", num_entries); - message_ = msg; - } - - char* err_msg = NULL; - int status; - - sqlite3_stmt *replace_stmt, *begin_trans_stmt, *end_trans_stmt; - std::string replace_str = "REPLACE INTO test (key, value) VALUES (?, ?)"; - std::string begin_trans_str = "BEGIN TRANSACTION;"; - std::string end_trans_str = "END TRANSACTION;"; - - // Check for synchronous flag in options - std::string sync_stmt = (write_sync) ? "PRAGMA synchronous = FULL" : - "PRAGMA synchronous = OFF"; - status = sqlite3_exec(db_, sync_stmt.c_str(), NULL, NULL, &err_msg); - ExecErrorCheck(status, err_msg); - - // Preparing sqlite3 statements - status = sqlite3_prepare_v2(db_, replace_str.c_str(), -1, - &replace_stmt, NULL); - ErrorCheck(status); - status = sqlite3_prepare_v2(db_, begin_trans_str.c_str(), -1, - &begin_trans_stmt, NULL); - ErrorCheck(status); - status = sqlite3_prepare_v2(db_, end_trans_str.c_str(), -1, - &end_trans_stmt, NULL); - ErrorCheck(status); - - bool transaction = (entries_per_batch > 1); - for (int i = 0; i < num_entries; i += entries_per_batch) { - // Begin write transaction - if (FLAGS_transaction && transaction) { - status = sqlite3_step(begin_trans_stmt); - StepErrorCheck(status); - status = sqlite3_reset(begin_trans_stmt); - ErrorCheck(status); - } - - // Create and execute SQL statements - for (int j = 0; j < entries_per_batch; j++) { - const char* value = gen_.Generate(value_size).data(); - - // Create values for key-value pair - const int k = (order == SEQUENTIAL) ? i + j : - (rand_.Next() % num_entries); - char key[100]; - snprintf(key, sizeof(key), "%016d", k); - - // Bind KV values into replace_stmt - status = sqlite3_bind_blob(replace_stmt, 1, key, 16, SQLITE_STATIC); - ErrorCheck(status); - status = sqlite3_bind_blob(replace_stmt, 2, value, - value_size, SQLITE_STATIC); - ErrorCheck(status); - - // Execute replace_stmt - bytes_ += value_size + strlen(key); - status = sqlite3_step(replace_stmt); - StepErrorCheck(status); - - // Reset SQLite statement for another use - status = sqlite3_clear_bindings(replace_stmt); - ErrorCheck(status); - status = sqlite3_reset(replace_stmt); - ErrorCheck(status); - - FinishedSingleOp(); - } - - // End write transaction - if (FLAGS_transaction && transaction) { - status = sqlite3_step(end_trans_stmt); - StepErrorCheck(status); - status = sqlite3_reset(end_trans_stmt); - ErrorCheck(status); - } - } - - status = sqlite3_finalize(replace_stmt); - ErrorCheck(status); - status = sqlite3_finalize(begin_trans_stmt); - ErrorCheck(status); - status = sqlite3_finalize(end_trans_stmt); - ErrorCheck(status); - } - - void Read(Order order, int entries_per_batch) { - int status; - sqlite3_stmt *read_stmt, *begin_trans_stmt, *end_trans_stmt; - - std::string read_str = "SELECT * FROM test WHERE key = ?"; - std::string begin_trans_str = "BEGIN TRANSACTION;"; - std::string end_trans_str = "END TRANSACTION;"; - - // Preparing sqlite3 statements - status = sqlite3_prepare_v2(db_, begin_trans_str.c_str(), -1, - &begin_trans_stmt, NULL); - ErrorCheck(status); - status = sqlite3_prepare_v2(db_, end_trans_str.c_str(), -1, - &end_trans_stmt, NULL); - ErrorCheck(status); - status = sqlite3_prepare_v2(db_, read_str.c_str(), -1, &read_stmt, NULL); - ErrorCheck(status); - - bool transaction = (entries_per_batch > 1); - for (int i = 0; i < reads_; i += entries_per_batch) { - // Begin read transaction - if (FLAGS_transaction && transaction) { - status = sqlite3_step(begin_trans_stmt); - StepErrorCheck(status); - status = sqlite3_reset(begin_trans_stmt); - ErrorCheck(status); - } - - // Create and execute SQL statements - for (int j = 0; j < entries_per_batch; j++) { - // Create key value - char key[100]; - int k = (order == SEQUENTIAL) ? i + j : (rand_.Next() % reads_); - snprintf(key, sizeof(key), "%016d", k); - - // Bind key value into read_stmt - status = sqlite3_bind_blob(read_stmt, 1, key, 16, SQLITE_STATIC); - ErrorCheck(status); - - // Execute read statement - while ((status = sqlite3_step(read_stmt)) == SQLITE_ROW) {} - StepErrorCheck(status); - - // Reset SQLite statement for another use - status = sqlite3_clear_bindings(read_stmt); - ErrorCheck(status); - status = sqlite3_reset(read_stmt); - ErrorCheck(status); - FinishedSingleOp(); - } - - // End read transaction - if (FLAGS_transaction && transaction) { - status = sqlite3_step(end_trans_stmt); - StepErrorCheck(status); - status = sqlite3_reset(end_trans_stmt); - ErrorCheck(status); - } - } - - status = sqlite3_finalize(read_stmt); - ErrorCheck(status); - status = sqlite3_finalize(begin_trans_stmt); - ErrorCheck(status); - status = sqlite3_finalize(end_trans_stmt); - ErrorCheck(status); - } - - void ReadSequential() { - int status; - sqlite3_stmt *pStmt; - std::string read_str = "SELECT * FROM test ORDER BY key"; - - status = sqlite3_prepare_v2(db_, read_str.c_str(), -1, &pStmt, NULL); - ErrorCheck(status); - for (int i = 0; i < reads_ && SQLITE_ROW == sqlite3_step(pStmt); i++) { - bytes_ += sqlite3_column_bytes(pStmt, 1) + sqlite3_column_bytes(pStmt, 2); - FinishedSingleOp(); - } - - status = sqlite3_finalize(pStmt); - ErrorCheck(status); - } - -}; - -} // namespace leveldb - -int main(int argc, char** argv) { - std::string default_db_path; - for (int i = 1; i < argc; i++) { - double d; - int n; - char junk; - if (leveldb::Slice(argv[i]).starts_with("--benchmarks=")) { - FLAGS_benchmarks = argv[i] + strlen("--benchmarks="); - } else if (sscanf(argv[i], "--histogram=%d%c", &n, &junk) == 1 && - (n == 0 || n == 1)) { - FLAGS_histogram = n; - } else if (sscanf(argv[i], "--compression_ratio=%lf%c", &d, &junk) == 1) { - FLAGS_compression_ratio = d; - } else if (sscanf(argv[i], "--use_existing_db=%d%c", &n, &junk) == 1 && - (n == 0 || n == 1)) { - FLAGS_use_existing_db = n; - } else if (sscanf(argv[i], "--num=%d%c", &n, &junk) == 1) { - FLAGS_num = n; - } else if (sscanf(argv[i], "--reads=%d%c", &n, &junk) == 1) { - FLAGS_reads = n; - } else if (sscanf(argv[i], "--value_size=%d%c", &n, &junk) == 1) { - FLAGS_value_size = n; - } else if (leveldb::Slice(argv[i]) == leveldb::Slice("--no_transaction")) { - FLAGS_transaction = false; - } else if (sscanf(argv[i], "--page_size=%d%c", &n, &junk) == 1) { - FLAGS_page_size = n; - } else if (sscanf(argv[i], "--num_pages=%d%c", &n, &junk) == 1) { - FLAGS_num_pages = n; - } else if (sscanf(argv[i], "--WAL_enabled=%d%c", &n, &junk) == 1 && - (n == 0 || n == 1)) { - FLAGS_WAL_enabled = n; - } else if (strncmp(argv[i], "--db=", 5) == 0) { - FLAGS_db = argv[i] + 5; - } else { - fprintf(stderr, "Invalid flag '%s'\n", argv[i]); - exit(1); - } - } - - // Choose a location for the test database if none given with --db= - if (FLAGS_db == NULL) { - leveldb::Env::Default()->GetTestDirectory(&default_db_path); - default_db_path += "/dbbench"; - FLAGS_db = default_db_path.c_str(); - } - - leveldb::Benchmark benchmark; - benchmark.Run(); - return 0; -} diff --git a/leveldb-1.18/doc/bench/db_bench_tree_db.cc b/leveldb-1.18/doc/bench/db_bench_tree_db.cc deleted file mode 100644 index 4ca381f..0000000 --- a/leveldb-1.18/doc/bench/db_bench_tree_db.cc +++ /dev/null @@ -1,528 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include -#include -#include "util/histogram.h" -#include "util/random.h" -#include "util/testutil.h" - -// Comma-separated list of operations to run in the specified order -// Actual benchmarks: -// -// fillseq -- write N values in sequential key order in async mode -// fillrandom -- write N values in random key order in async mode -// overwrite -- overwrite N values in random key order in async mode -// fillseqsync -- write N/100 values in sequential key order in sync mode -// fillrandsync -- write N/100 values in random key order in sync mode -// fillrand100K -- write N/1000 100K values in random order in async mode -// fillseq100K -- write N/1000 100K values in seq order in async mode -// readseq -- read N times sequentially -// readseq100K -- read N/1000 100K values in sequential order in async mode -// readrand100K -- read N/1000 100K values in sequential order in async mode -// readrandom -- read N times in random order -static const char* FLAGS_benchmarks = - "fillseq," - "fillseqsync," - "fillrandsync," - "fillrandom," - "overwrite," - "readrandom," - "readseq," - "fillrand100K," - "fillseq100K," - "readseq100K," - "readrand100K," - ; - -// Number of key/values to place in database -static int FLAGS_num = 1000000; - -// Number of read operations to do. If negative, do FLAGS_num reads. -static int FLAGS_reads = -1; - -// Size of each value -static int FLAGS_value_size = 100; - -// Arrange to generate values that shrink to this fraction of -// their original size after compression -static double FLAGS_compression_ratio = 0.5; - -// Print histogram of operation timings -static bool FLAGS_histogram = false; - -// Cache size. Default 4 MB -static int FLAGS_cache_size = 4194304; - -// Page size. Default 1 KB -static int FLAGS_page_size = 1024; - -// If true, do not destroy the existing database. If you set this -// flag and also specify a benchmark that wants a fresh database, that -// benchmark will fail. -static bool FLAGS_use_existing_db = false; - -// Compression flag. If true, compression is on. If false, compression -// is off. -static bool FLAGS_compression = true; - -// Use the db with the following name. -static const char* FLAGS_db = NULL; - -inline -static void DBSynchronize(kyotocabinet::TreeDB* db_) -{ - // Synchronize will flush writes to disk - if (!db_->synchronize()) { - fprintf(stderr, "synchronize error: %s\n", db_->error().name()); - } -} - -namespace leveldb { - -// Helper for quickly generating random data. -namespace { -class RandomGenerator { - private: - std::string data_; - int pos_; - - public: - RandomGenerator() { - // We use a limited amount of data over and over again and ensure - // that it is larger than the compression window (32KB), and also - // large enough to serve all typical value sizes we want to write. - Random rnd(301); - std::string piece; - while (data_.size() < 1048576) { - // Add a short fragment that is as compressible as specified - // by FLAGS_compression_ratio. - test::CompressibleString(&rnd, FLAGS_compression_ratio, 100, &piece); - data_.append(piece); - } - pos_ = 0; - } - - Slice Generate(int len) { - if (pos_ + len > data_.size()) { - pos_ = 0; - assert(len < data_.size()); - } - pos_ += len; - return Slice(data_.data() + pos_ - len, len); - } -}; - -static Slice TrimSpace(Slice s) { - int start = 0; - while (start < s.size() && isspace(s[start])) { - start++; - } - int limit = s.size(); - while (limit > start && isspace(s[limit-1])) { - limit--; - } - return Slice(s.data() + start, limit - start); -} - -} // namespace - -class Benchmark { - private: - kyotocabinet::TreeDB* db_; - int db_num_; - int num_; - int reads_; - double start_; - double last_op_finish_; - int64_t bytes_; - std::string message_; - Histogram hist_; - RandomGenerator gen_; - Random rand_; - kyotocabinet::LZOCompressor comp_; - - // State kept for progress messages - int done_; - int next_report_; // When to report next - - void PrintHeader() { - const int kKeySize = 16; - PrintEnvironment(); - fprintf(stdout, "Keys: %d bytes each\n", kKeySize); - fprintf(stdout, "Values: %d bytes each (%d bytes after compression)\n", - FLAGS_value_size, - static_cast(FLAGS_value_size * FLAGS_compression_ratio + 0.5)); - fprintf(stdout, "Entries: %d\n", num_); - fprintf(stdout, "RawSize: %.1f MB (estimated)\n", - ((static_cast(kKeySize + FLAGS_value_size) * num_) - / 1048576.0)); - fprintf(stdout, "FileSize: %.1f MB (estimated)\n", - (((kKeySize + FLAGS_value_size * FLAGS_compression_ratio) * num_) - / 1048576.0)); - PrintWarnings(); - fprintf(stdout, "------------------------------------------------\n"); - } - - void PrintWarnings() { -#if defined(__GNUC__) && !defined(__OPTIMIZE__) - fprintf(stdout, - "WARNING: Optimization is disabled: benchmarks unnecessarily slow\n" - ); -#endif -#ifndef NDEBUG - fprintf(stdout, - "WARNING: Assertions are enabled; benchmarks unnecessarily slow\n"); -#endif - } - - void PrintEnvironment() { - fprintf(stderr, "Kyoto Cabinet: version %s, lib ver %d, lib rev %d\n", - kyotocabinet::VERSION, kyotocabinet::LIBVER, kyotocabinet::LIBREV); - -#if defined(__linux) - time_t now = time(NULL); - fprintf(stderr, "Date: %s", ctime(&now)); // ctime() adds newline - - FILE* cpuinfo = fopen("/proc/cpuinfo", "r"); - if (cpuinfo != NULL) { - char line[1000]; - int num_cpus = 0; - std::string cpu_type; - std::string cache_size; - while (fgets(line, sizeof(line), cpuinfo) != NULL) { - const char* sep = strchr(line, ':'); - if (sep == NULL) { - continue; - } - Slice key = TrimSpace(Slice(line, sep - 1 - line)); - Slice val = TrimSpace(Slice(sep + 1)); - if (key == "model name") { - ++num_cpus; - cpu_type = val.ToString(); - } else if (key == "cache size") { - cache_size = val.ToString(); - } - } - fclose(cpuinfo); - fprintf(stderr, "CPU: %d * %s\n", num_cpus, cpu_type.c_str()); - fprintf(stderr, "CPUCache: %s\n", cache_size.c_str()); - } -#endif - } - - void Start() { - start_ = Env::Default()->NowMicros() * 1e-6; - bytes_ = 0; - message_.clear(); - last_op_finish_ = start_; - hist_.Clear(); - done_ = 0; - next_report_ = 100; - } - - void FinishedSingleOp() { - if (FLAGS_histogram) { - double now = Env::Default()->NowMicros() * 1e-6; - double micros = (now - last_op_finish_) * 1e6; - hist_.Add(micros); - if (micros > 20000) { - fprintf(stderr, "long op: %.1f micros%30s\r", micros, ""); - fflush(stderr); - } - last_op_finish_ = now; - } - - done_++; - if (done_ >= next_report_) { - if (next_report_ < 1000) next_report_ += 100; - else if (next_report_ < 5000) next_report_ += 500; - else if (next_report_ < 10000) next_report_ += 1000; - else if (next_report_ < 50000) next_report_ += 5000; - else if (next_report_ < 100000) next_report_ += 10000; - else if (next_report_ < 500000) next_report_ += 50000; - else next_report_ += 100000; - fprintf(stderr, "... finished %d ops%30s\r", done_, ""); - fflush(stderr); - } - } - - void Stop(const Slice& name) { - double finish = Env::Default()->NowMicros() * 1e-6; - - // Pretend at least one op was done in case we are running a benchmark - // that does not call FinishedSingleOp(). - if (done_ < 1) done_ = 1; - - if (bytes_ > 0) { - char rate[100]; - snprintf(rate, sizeof(rate), "%6.1f MB/s", - (bytes_ / 1048576.0) / (finish - start_)); - if (!message_.empty()) { - message_ = std::string(rate) + " " + message_; - } else { - message_ = rate; - } - } - - fprintf(stdout, "%-12s : %11.3f micros/op;%s%s\n", - name.ToString().c_str(), - (finish - start_) * 1e6 / done_, - (message_.empty() ? "" : " "), - message_.c_str()); - if (FLAGS_histogram) { - fprintf(stdout, "Microseconds per op:\n%s\n", hist_.ToString().c_str()); - } - fflush(stdout); - } - - public: - enum Order { - SEQUENTIAL, - RANDOM - }; - enum DBState { - FRESH, - EXISTING - }; - - Benchmark() - : db_(NULL), - num_(FLAGS_num), - reads_(FLAGS_reads < 0 ? FLAGS_num : FLAGS_reads), - bytes_(0), - rand_(301) { - std::vector files; - std::string test_dir; - Env::Default()->GetTestDirectory(&test_dir); - Env::Default()->GetChildren(test_dir.c_str(), &files); - if (!FLAGS_use_existing_db) { - for (int i = 0; i < files.size(); i++) { - if (Slice(files[i]).starts_with("dbbench_polyDB")) { - std::string file_name(test_dir); - file_name += "/"; - file_name += files[i]; - Env::Default()->DeleteFile(file_name.c_str()); - } - } - } - } - - ~Benchmark() { - if (!db_->close()) { - fprintf(stderr, "close error: %s\n", db_->error().name()); - } - } - - void Run() { - PrintHeader(); - Open(false); - - const char* benchmarks = FLAGS_benchmarks; - while (benchmarks != NULL) { - const char* sep = strchr(benchmarks, ','); - Slice name; - if (sep == NULL) { - name = benchmarks; - benchmarks = NULL; - } else { - name = Slice(benchmarks, sep - benchmarks); - benchmarks = sep + 1; - } - - Start(); - - bool known = true; - bool write_sync = false; - if (name == Slice("fillseq")) { - Write(write_sync, SEQUENTIAL, FRESH, num_, FLAGS_value_size, 1); - DBSynchronize(db_); - } else if (name == Slice("fillrandom")) { - Write(write_sync, RANDOM, FRESH, num_, FLAGS_value_size, 1); - DBSynchronize(db_); - } else if (name == Slice("overwrite")) { - Write(write_sync, RANDOM, EXISTING, num_, FLAGS_value_size, 1); - DBSynchronize(db_); - } else if (name == Slice("fillrandsync")) { - write_sync = true; - Write(write_sync, RANDOM, FRESH, num_ / 100, FLAGS_value_size, 1); - DBSynchronize(db_); - } else if (name == Slice("fillseqsync")) { - write_sync = true; - Write(write_sync, SEQUENTIAL, FRESH, num_ / 100, FLAGS_value_size, 1); - DBSynchronize(db_); - } else if (name == Slice("fillrand100K")) { - Write(write_sync, RANDOM, FRESH, num_ / 1000, 100 * 1000, 1); - DBSynchronize(db_); - } else if (name == Slice("fillseq100K")) { - Write(write_sync, SEQUENTIAL, FRESH, num_ / 1000, 100 * 1000, 1); - DBSynchronize(db_); - } else if (name == Slice("readseq")) { - ReadSequential(); - } else if (name == Slice("readrandom")) { - ReadRandom(); - } else if (name == Slice("readrand100K")) { - int n = reads_; - reads_ /= 1000; - ReadRandom(); - reads_ = n; - } else if (name == Slice("readseq100K")) { - int n = reads_; - reads_ /= 1000; - ReadSequential(); - reads_ = n; - } else { - known = false; - if (name != Slice()) { // No error message for empty name - fprintf(stderr, "unknown benchmark '%s'\n", name.ToString().c_str()); - } - } - if (known) { - Stop(name); - } - } - } - - private: - void Open(bool sync) { - assert(db_ == NULL); - - // Initialize db_ - db_ = new kyotocabinet::TreeDB(); - char file_name[100]; - db_num_++; - std::string test_dir; - Env::Default()->GetTestDirectory(&test_dir); - snprintf(file_name, sizeof(file_name), - "%s/dbbench_polyDB-%d.kct", - test_dir.c_str(), - db_num_); - - // Create tuning options and open the database - int open_options = kyotocabinet::PolyDB::OWRITER | - kyotocabinet::PolyDB::OCREATE; - int tune_options = kyotocabinet::TreeDB::TSMALL | - kyotocabinet::TreeDB::TLINEAR; - if (FLAGS_compression) { - tune_options |= kyotocabinet::TreeDB::TCOMPRESS; - db_->tune_compressor(&comp_); - } - db_->tune_options(tune_options); - db_->tune_page_cache(FLAGS_cache_size); - db_->tune_page(FLAGS_page_size); - db_->tune_map(256LL<<20); - if (sync) { - open_options |= kyotocabinet::PolyDB::OAUTOSYNC; - } - if (!db_->open(file_name, open_options)) { - fprintf(stderr, "open error: %s\n", db_->error().name()); - } - } - - void Write(bool sync, Order order, DBState state, - int num_entries, int value_size, int entries_per_batch) { - // Create new database if state == FRESH - if (state == FRESH) { - if (FLAGS_use_existing_db) { - message_ = "skipping (--use_existing_db is true)"; - return; - } - delete db_; - db_ = NULL; - Open(sync); - Start(); // Do not count time taken to destroy/open - } - - if (num_entries != num_) { - char msg[100]; - snprintf(msg, sizeof(msg), "(%d ops)", num_entries); - message_ = msg; - } - - // Write to database - for (int i = 0; i < num_entries; i++) - { - const int k = (order == SEQUENTIAL) ? i : (rand_.Next() % num_entries); - char key[100]; - snprintf(key, sizeof(key), "%016d", k); - bytes_ += value_size + strlen(key); - std::string cpp_key = key; - if (!db_->set(cpp_key, gen_.Generate(value_size).ToString())) { - fprintf(stderr, "set error: %s\n", db_->error().name()); - } - FinishedSingleOp(); - } - } - - void ReadSequential() { - kyotocabinet::DB::Cursor* cur = db_->cursor(); - cur->jump(); - std::string ckey, cvalue; - while (cur->get(&ckey, &cvalue, true)) { - bytes_ += ckey.size() + cvalue.size(); - FinishedSingleOp(); - } - delete cur; - } - - void ReadRandom() { - std::string value; - for (int i = 0; i < reads_; i++) { - char key[100]; - const int k = rand_.Next() % reads_; - snprintf(key, sizeof(key), "%016d", k); - db_->get(key, &value); - FinishedSingleOp(); - } - } -}; - -} // namespace leveldb - -int main(int argc, char** argv) { - std::string default_db_path; - for (int i = 1; i < argc; i++) { - double d; - int n; - char junk; - if (leveldb::Slice(argv[i]).starts_with("--benchmarks=")) { - FLAGS_benchmarks = argv[i] + strlen("--benchmarks="); - } else if (sscanf(argv[i], "--compression_ratio=%lf%c", &d, &junk) == 1) { - FLAGS_compression_ratio = d; - } else if (sscanf(argv[i], "--histogram=%d%c", &n, &junk) == 1 && - (n == 0 || n == 1)) { - FLAGS_histogram = n; - } else if (sscanf(argv[i], "--num=%d%c", &n, &junk) == 1) { - FLAGS_num = n; - } else if (sscanf(argv[i], "--reads=%d%c", &n, &junk) == 1) { - FLAGS_reads = n; - } else if (sscanf(argv[i], "--value_size=%d%c", &n, &junk) == 1) { - FLAGS_value_size = n; - } else if (sscanf(argv[i], "--cache_size=%d%c", &n, &junk) == 1) { - FLAGS_cache_size = n; - } else if (sscanf(argv[i], "--page_size=%d%c", &n, &junk) == 1) { - FLAGS_page_size = n; - } else if (sscanf(argv[i], "--compression=%d%c", &n, &junk) == 1 && - (n == 0 || n == 1)) { - FLAGS_compression = (n == 1) ? true : false; - } else if (strncmp(argv[i], "--db=", 5) == 0) { - FLAGS_db = argv[i] + 5; - } else { - fprintf(stderr, "Invalid flag '%s'\n", argv[i]); - exit(1); - } - } - - // Choose a location for the test database if none given with --db= - if (FLAGS_db == NULL) { - leveldb::Env::Default()->GetTestDirectory(&default_db_path); - default_db_path += "/dbbench"; - FLAGS_db = default_db_path.c_str(); - } - - leveldb::Benchmark benchmark; - benchmark.Run(); - return 0; -} diff --git a/leveldb-1.18/doc/benchmark.html b/leveldb-1.18/doc/benchmark.html deleted file mode 100644 index c463977..0000000 --- a/leveldb-1.18/doc/benchmark.html +++ /dev/null @@ -1,459 +0,0 @@ - - - -LevelDB Benchmarks - - - - -

LevelDB Benchmarks

-

Google, July 2011

-
- -

In order to test LevelDB's performance, we benchmark it against other well-established database implementations. We compare LevelDB (revision 39) against SQLite3 (version 3.7.6.3) and Kyoto Cabinet's (version 1.2.67) TreeDB (a B+Tree based key-value store). We would like to acknowledge Scott Hess and Mikio Hirabayashi for their suggestions and contributions to the SQLite3 and Kyoto Cabinet benchmarks, respectively.

- -

Benchmarks were all performed on a six-core Intel(R) Xeon(R) CPU X5650 @ 2.67GHz, with 12288 KB of total L3 cache and 12 GB of DDR3 RAM at 1333 MHz. (Note that LevelDB uses at most two CPUs since the benchmarks are single threaded: one to run the benchmark, and one for background compactions.) We ran the benchmarks on two machines (with identical processors), one with an Ext3 file system and one with an Ext4 file system. The machine with the Ext3 file system has a SATA Hitachi HDS721050CLA362 hard drive. The machine with the Ext4 file system has a SATA Samsung HD502HJ hard drive. Both hard drives spin at 7200 RPM and have hard drive write-caching enabled (using `hdparm -W 1 [device]`). The numbers reported below are the median of three measurements.

- -

Benchmark Source Code

-

We wrote benchmark tools for SQLite and Kyoto TreeDB based on LevelDB's db_bench. The code for each of the benchmarks resides here:

- - -

Custom Build Specifications

-
    -
  • LevelDB: LevelDB was compiled with the tcmalloc library and the Snappy compression library (revision 33). Assertions were disabled.
    • -
  • TreeDB: TreeDB was compiled using the LZO compression library (version 2.03). Furthermore, we enabled the TSMALL and TLINEAR options when opening the database in order to reduce the footprint of each record.
    • -
  • SQLite: We tuned SQLite's performance, by setting its locking mode to exclusive. We also enabled SQLite's write-ahead logging.
    • -
- -

1. Baseline Performance

-

This section gives the baseline performance of all the -databases. Following sections show how performance changes as various -parameters are varied. For the baseline:

-
    -
  • Each database is allowed 4 MB of cache memory.
    • -
  • Databases are opened in asynchronous write mode. - (LevelDB's sync option, TreeDB's OAUTOSYNC option, and - SQLite3's synchronous options are all turned off). I.e., - every write is pushed to the operating system, but the - benchmark does not wait for the write to reach the disk.
    • -
  • Keys are 16 bytes each.
    • -
  • Value are 100 bytes each (with enough redundancy so that - a simple compressor shrinks them to 50% of their original - size).
    • -
  • Sequential reads/writes traverse the key space in increasing order.
    • -
  • Random reads/writes traverse the key space in random order.
    • -
- -

A. Sequential Reads

- - - - - - - - - - -
LevelDB4,030,000 ops/sec
 
Kyoto TreeDB1,010,000 ops/sec
 
SQLite3383,000 ops/sec
 
-

B. Random Reads

- - - - - - - - - - -
LevelDB129,000 ops/sec
 
Kyoto TreeDB151,000 ops/sec
 
SQLite3134,000 ops/sec
 
-

C. Sequential Writes

- - - - - - - - - - -
LevelDB779,000 ops/sec
 
Kyoto TreeDB342,000 ops/sec
 
SQLite348,600 ops/sec
 
-

D. Random Writes

- - - - - - - - - - -
LevelDB164,000 ops/sec
 
Kyoto TreeDB88,500 ops/sec
 
SQLite39,860 ops/sec
 
- -

LevelDB outperforms both SQLite3 and TreeDB in sequential and random write operations and sequential read operations. Kyoto Cabinet has the fastest random read operations.

- -

2. Write Performance under Different Configurations

-

A. Large Values

-

For this benchmark, we start with an empty database, and write 100,000 byte values (~50% compressible). To keep the benchmark running time reasonable, we stop after writing 1000 values.

-

Sequential Writes

- - - - - - - - - - -
LevelDB1,100 ops/sec
 
Kyoto TreeDB1,000 ops/sec
 
SQLite31,600 ops/sec
 
-

Random Writes

- - - - - - - - - - -
LevelDB480 ops/sec
 
Kyoto TreeDB1,100 ops/sec
 
SQLite31,600 ops/sec
 
-

LevelDB doesn't perform as well with large values of 100,000 bytes each. This is because LevelDB writes keys and values at least twice: first time to the transaction log, and second time (during a compaction) to a sorted file. -With larger values, LevelDB's per-operation efficiency is swamped by the -cost of extra copies of large values.

-

B. Batch Writes

-

A batch write is a set of writes that are applied atomically to the underlying database. A single batch of N writes may be significantly faster than N individual writes. The following benchmark writes one thousand batches where each batch contains one thousand 100-byte values. TreeDB does not support batch writes and is omitted from this benchmark.

-

Sequential Writes

- - - - - - - - - -
LevelDB840,000 entries/sec
 
(1.08x baseline)
SQLite3124,000 entries/sec
 
(2.55x baseline)
-

Random Writes

- - - - - - - - - -
LevelDB221,000 entries/sec
 
(1.35x baseline)
SQLite322,000 entries/sec
 
(2.23x baseline)
- -

Because of the way LevelDB persistent storage is organized, batches of -random writes are not much slower (only a factor of 4x) than batches -of sequential writes.

- -

C. Synchronous Writes

-

In the following benchmark, we enable the synchronous writing modes -of all of the databases. Since this change significantly slows down the -benchmark, we stop after 10,000 writes. For synchronous write tests, we've -disabled hard drive write-caching (using `hdparm -W 0 [device]`).

-
    -
  • For LevelDB, we set WriteOptions.sync = true.
    • -
  • In TreeDB, we enabled TreeDB's OAUTOSYNC option.
    • -
  • For SQLite3, we set "PRAGMA synchronous = FULL".
    • -
-

Sequential Writes

- - - - - - - - - - - - - -
LevelDB100 ops/sec
 
(0.003x baseline)
Kyoto TreeDB7 ops/sec
 
(0.0004x baseline)
SQLite388 ops/sec
 
(0.002x baseline)
-

Random Writes

- - - - - - - - - - - - - -
LevelDB100 ops/sec
 
(0.015x baseline)
Kyoto TreeDB8 ops/sec
 
(0.001x baseline)
SQLite388 ops/sec
 
(0.009x baseline)
- -

Also see the ext4 performance numbers below -since synchronous writes behave significantly differently -on ext3 and ext4.

- -

D. Turning Compression Off

- -

In the baseline measurements, LevelDB and TreeDB were using -light-weight compression -(Snappy for LevelDB, -and LZO for -TreeDB). SQLite3, by default does not use compression. The -experiments below show what happens when compression is disabled in -all of the databases (the SQLite3 numbers are just a copy of -its baseline measurements):

- -

Sequential Writes

- - - - - - - - - - - - - -
LevelDB594,000 ops/sec
 
(0.76x baseline)
Kyoto TreeDB485,000 ops/sec
 
(1.42x baseline)
SQLite348,600 ops/sec
 
(1.00x baseline)
-

Random Writes

- - - - - - - - - - - - - -
LevelDB135,000 ops/sec
 
(0.82x baseline)
Kyoto TreeDB159,000 ops/sec
 
(1.80x baseline)
SQLite39,860 ops/sec
 
(1.00x baseline)
- -

LevelDB's write performance is better with compression than without -since compression decreases the amount of data that has to be written -to disk. Therefore LevelDB users can leave compression enabled in -most scenarios without having worry about a tradeoff between space -usage and performance. TreeDB's performance on the other hand is -better without compression than with compression. Presumably this is -because TreeDB's compression library (LZO) is more expensive than -LevelDB's compression library (Snappy).

- -

E. Using More Memory

-

We increased the overall cache size for each database to 128 MB. For LevelDB, we partitioned 128 MB into a 120 MB write buffer and 8 MB of cache (up from 2 MB of write buffer and 2 MB of cache). For SQLite3, we kept the page size at 1024 bytes, but increased the number of pages to 131,072 (up from 4096). For TreeDB, we also kept the page size at 1024 bytes, but increased the cache size to 128 MB (up from 4 MB).

-

Sequential Writes

- - - - - - - - - - - - - -
LevelDB812,000 ops/sec
 
(1.04x baseline)
Kyoto TreeDB321,000 ops/sec
 
(0.94x baseline)
SQLite348,500 ops/sec
 
(1.00x baseline)
-

Random Writes

- - - - - - - - - - - - - -
LevelDB355,000 ops/sec
 
(2.16x baseline)
Kyoto TreeDB284,000 ops/sec
 
(3.21x baseline)
SQLite39,670 ops/sec
 
(0.98x baseline)
- -

SQLite's performance does not change substantially when compared to -the baseline, but the random write performance for both LevelDB and -TreeDB increases significantly. LevelDB's performance improves -because a larger write buffer reduces the need to merge sorted files -(since it creates a smaller number of larger sorted files). TreeDB's -performance goes up because the entire database is available in memory -for fast in-place updates.

- -

3. Read Performance under Different Configurations

-

A. Larger Caches

-

We increased the overall memory usage to 128 MB for each database. -For LevelDB, we allocated 8 MB to LevelDB's write buffer and 120 MB -to LevelDB's cache. The other databases don't differentiate between a -write buffer and a cache, so we simply set their cache size to 128 -MB.

-

Sequential Reads

- - - - - - - - - - - - - -
LevelDB5,210,000 ops/sec
 
(1.29x baseline)
Kyoto TreeDB1,070,000 ops/sec
 
(1.06x baseline)
SQLite3609,000 ops/sec
 
(1.59x baseline)
- -

Random Reads

- - - - - - - - - - - - - -
LevelDB190,000 ops/sec
 
(1.47x baseline)
Kyoto TreeDB463,000 ops/sec
 
(3.07x baseline)
SQLite3186,000 ops/sec
 
(1.39x baseline)
- -

As expected, the read performance of all of the databases increases -when the caches are enlarged. In particular, TreeDB seems to make -very effective use of a cache that is large enough to hold the entire -database.

- -

B. No Compression Reads

-

For this benchmark, we populated a database with 1 million entries consisting of 16 byte keys and 100 byte values. We compiled LevelDB and Kyoto Cabinet without compression support, so results that are read out from the database are already uncompressed. We've listed the SQLite3 baseline read performance as a point of comparison.

-

Sequential Reads

- - - - - - - - - - - - - -
LevelDB4,880,000 ops/sec
 
(1.21x baseline)
Kyoto TreeDB1,230,000 ops/sec
 
(3.60x baseline)
SQLite3383,000 ops/sec
 
(1.00x baseline)
-

Random Reads

- - - - - - - - - - - - - -
LevelDB149,000 ops/sec
 
(1.16x baseline)
Kyoto TreeDB175,000 ops/sec
 
(1.16x baseline)
SQLite3134,000 ops/sec
 
(1.00x baseline)
- -

Performance of both LevelDB and TreeDB improves a small amount when -compression is disabled. Note however that under different workloads, -performance may very well be better with compression if it allows more -of the working set to fit in memory.

- -

Note about Ext4 Filesystems

-

The preceding numbers are for an ext3 file system. Synchronous writes are much slower under ext4 (LevelDB drops to ~31 writes / second and TreeDB drops to ~5 writes / second; SQLite3's synchronous writes do not noticeably drop) due to ext4's different handling of fsync / msync calls. Even LevelDB's asynchronous write performance drops somewhat since it spreads its storage across multiple files and issues fsync calls when switching to a new file.

- -

Acknowledgements

-

Jeff Dean and Sanjay Ghemawat wrote LevelDB. Kevin Tseng wrote and compiled these benchmarks. Mikio Hirabayashi, Scott Hess, and Gabor Cselle provided help and advice.

- - diff --git a/leveldb-1.18/doc/doc.css b/leveldb-1.18/doc/doc.css deleted file mode 100644 index 700c564..0000000 --- a/leveldb-1.18/doc/doc.css +++ /dev/null @@ -1,89 +0,0 @@ -body { - margin-left: 0.5in; - margin-right: 0.5in; - background: white; - color: black; -} - -h1 { - margin-left: -0.2in; - font-size: 14pt; -} -h2 { - margin-left: -0in; - font-size: 12pt; -} -h3 { - margin-left: -0in; -} -h4 { - margin-left: -0in; -} -hr { - margin-left: -0in; -} - -/* Definition lists: definition term bold */ -dt { - font-weight: bold; -} - -address { - text-align: center; -} -code,samp,var { - color: blue; -} -kbd { - color: #600000; -} -div.note p { - float: right; - width: 3in; - margin-right: 0%; - padding: 1px; - border: 2px solid #6060a0; - background-color: #fffff0; -} - -ul { - margin-top: -0em; - margin-bottom: -0em; -} - -ol { - margin-top: -0em; - margin-bottom: -0em; -} - -UL.nobullets { - list-style-type: none; - list-style-image: none; - margin-left: -1em; -} - -p { - margin: 1em 0 1em 0; - padding: 0 0 0 0; -} - -pre { - line-height: 1.3em; - padding: 0.4em 0 0.8em 0; - margin: 0 0 0 0; - border: 0 0 0 0; - color: blue; -} - -.datatable { - margin-left: auto; - margin-right: auto; - margin-top: 2em; - margin-bottom: 2em; - border: 1px solid; -} - -.datatable td,th { - padding: 0 0.5em 0 0.5em; - text-align: right; -} diff --git a/leveldb-1.18/doc/impl.html b/leveldb-1.18/doc/impl.html deleted file mode 100644 index 6a468be..0000000 --- a/leveldb-1.18/doc/impl.html +++ /dev/null @@ -1,213 +0,0 @@ - - - - -Leveldb file layout and compactions - - - - -

Files

- -The implementation of leveldb is similar in spirit to the -representation of a single - -Bigtable tablet (section 5.3). -However the organization of the files that make up the representation -is somewhat different and is explained below. - -

-Each database is represented by a set of files stored in a directory. -There are several different types of files as documented below: -

-

Log files

-

-A log file (*.log) stores a sequence of recent updates. Each update -is appended to the current log file. When the log file reaches a -pre-determined size (approximately 4MB by default), it is converted -to a sorted table (see below) and a new log file is created for future -updates. -

-A copy of the current log file is kept in an in-memory structure (the -memtable). This copy is consulted on every read so that read -operations reflect all logged updates. -

-

Sorted tables

-

-A sorted table (*.sst) stores a sequence of entries sorted by key. -Each entry is either a value for the key, or a deletion marker for the -key. (Deletion markers are kept around to hide obsolete values -present in older sorted tables). -

-The set of sorted tables are organized into a sequence of levels. The -sorted table generated from a log file is placed in a special young -level (also called level-0). When the number of young files exceeds a -certain threshold (currently four), all of the young files are merged -together with all of the overlapping level-1 files to produce a -sequence of new level-1 files (we create a new level-1 file for every -2MB of data.) -

-Files in the young level may contain overlapping keys. However files -in other levels have distinct non-overlapping key ranges. Consider -level number L where L >= 1. When the combined size of files in -level-L exceeds (10^L) MB (i.e., 10MB for level-1, 100MB for level-2, -...), one file in level-L, and all of the overlapping files in -level-(L+1) are merged to form a set of new files for level-(L+1). -These merges have the effect of gradually migrating new updates from -the young level to the largest level using only bulk reads and writes -(i.e., minimizing expensive seeks). - -

Manifest

-

-A MANIFEST file lists the set of sorted tables that make up each -level, the corresponding key ranges, and other important metadata. -A new MANIFEST file (with a new number embedded in the file name) -is created whenever the database is reopened. The MANIFEST file is -formatted as a log, and changes made to the serving state (as files -are added or removed) are appended to this log. -

-

Current

-

-CURRENT is a simple text file that contains the name of the latest -MANIFEST file. -

-

Info logs

-

-Informational messages are printed to files named LOG and LOG.old. -

-

Others

-

-Other files used for miscellaneous purposes may also be present -(LOCK, *.dbtmp). - -

Level 0

-When the log file grows above a certain size (1MB by default): -
    -
  • Create a brand new memtable and log file and direct future updates here -
  • In the background: -
      -
    • Write the contents of the previous memtable to an sstable -
    • Discard the memtable -
    • Delete the old log file and the old memtable -
    • Add the new sstable to the young (level-0) level. -
    -
- -

Compactions

- -

-When the size of level L exceeds its limit, we compact it in a -background thread. The compaction picks a file from level L and all -overlapping files from the next level L+1. Note that if a level-L -file overlaps only part of a level-(L+1) file, the entire file at -level-(L+1) is used as an input to the compaction and will be -discarded after the compaction. Aside: because level-0 is special -(files in it may overlap each other), we treat compactions from -level-0 to level-1 specially: a level-0 compaction may pick more than -one level-0 file in case some of these files overlap each other. - -

-A compaction merges the contents of the picked files to produce a -sequence of level-(L+1) files. We switch to producing a new -level-(L+1) file after the current output file has reached the target -file size (2MB). We also switch to a new output file when the key -range of the current output file has grown enough to overlap more than -ten level-(L+2) files. This last rule ensures that a later compaction -of a level-(L+1) file will not pick up too much data from level-(L+2). - -

-The old files are discarded and the new files are added to the serving -state. - -

-Compactions for a particular level rotate through the key space. In -more detail, for each level L, we remember the ending key of the last -compaction at level L. The next compaction for level L will pick the -first file that starts after this key (wrapping around to the -beginning of the key space if there is no such file). - -

-Compactions drop overwritten values. They also drop deletion markers -if there are no higher numbered levels that contain a file whose range -overlaps the current key. - -

Timing

- -Level-0 compactions will read up to four 1MB files from level-0, and -at worst all the level-1 files (10MB). I.e., we will read 14MB and -write 14MB. - -

-Other than the special level-0 compactions, we will pick one 2MB file -from level L. In the worst case, this will overlap ~ 12 files from -level L+1 (10 because level-(L+1) is ten times the size of level-L, -and another two at the boundaries since the file ranges at level-L -will usually not be aligned with the file ranges at level-L+1). The -compaction will therefore read 26MB and write 26MB. Assuming a disk -IO rate of 100MB/s (ballpark range for modern drives), the worst -compaction cost will be approximately 0.5 second. - -

-If we throttle the background writing to something small, say 10% of -the full 100MB/s speed, a compaction may take up to 5 seconds. If the -user is writing at 10MB/s, we might build up lots of level-0 files -(~50 to hold the 5*10MB). This may significantly increase the cost of -reads due to the overhead of merging more files together on every -read. - -

-Solution 1: To reduce this problem, we might want to increase the log -switching threshold when the number of level-0 files is large. Though -the downside is that the larger this threshold, the more memory we will -need to hold the corresponding memtable. - -

-Solution 2: We might want to decrease write rate artificially when the -number of level-0 files goes up. - -

-Solution 3: We work on reducing the cost of very wide merges. -Perhaps most of the level-0 files will have their blocks sitting -uncompressed in the cache and we will only need to worry about the -O(N) complexity in the merging iterator. - -

Number of files

- -Instead of always making 2MB files, we could make larger files for -larger levels to reduce the total file count, though at the expense of -more bursty compactions. Alternatively, we could shard the set of -files into multiple directories. - -

-An experiment on an ext3 filesystem on Feb 04, 2011 shows -the following timings to do 100K file opens in directories with -varying number of files: - - - - - -
Files in directoryMicroseconds to open a file
10009
1000010
10000016
-So maybe even the sharding is not necessary on modern filesystems? - -

Recovery

- -
    -
  • Read CURRENT to find name of the latest committed MANIFEST -
  • Read the named MANIFEST file -
  • Clean up stale files -
  • We could open all sstables here, but it is probably better to be lazy... -
  • Convert log chunk to a new level-0 sstable -
  • Start directing new writes to a new log file with recovered sequence# -
- -

Garbage collection of files

- -DeleteObsoleteFiles() is called at the end of every -compaction and at the end of recovery. It finds the names of all -files in the database. It deletes all log files that are not the -current log file. It deletes all table files that are not referenced -from some level and are not the output of an active compaction. - - - diff --git a/leveldb-1.18/doc/index.html b/leveldb-1.18/doc/index.html deleted file mode 100644 index 3ed0ed9..0000000 --- a/leveldb-1.18/doc/index.html +++ /dev/null @@ -1,549 +0,0 @@ - - - - -Leveldb - - - -

Leveldb

-
Jeff Dean, Sanjay Ghemawat
-

-The leveldb library provides a persistent key value store. Keys and -values are arbitrary byte arrays. The keys are ordered within the key -value store according to a user-specified comparator function. - -

-

Opening A Database

-

-A leveldb database has a name which corresponds to a file system -directory. All of the contents of database are stored in this -directory. The following example shows how to open a database, -creating it if necessary: -

-

-  #include <assert>
-  #include "leveldb/db.h"
-
-  leveldb::DB* db;
-  leveldb::Options options;
-  options.create_if_missing = true;
-  leveldb::Status status = leveldb::DB::Open(options, "/tmp/testdb", &db);
-  assert(status.ok());
-  ...
-
-If you want to raise an error if the database already exists, add -the following line before the leveldb::DB::Open call: -
-  options.error_if_exists = true;
-
-

Status

-

-You may have noticed the leveldb::Status type above. Values of this -type are returned by most functions in leveldb that may encounter an -error. You can check if such a result is ok, and also print an -associated error message: -

-

-   leveldb::Status s = ...;
-   if (!s.ok()) cerr << s.ToString() << endl;
-
-

Closing A Database

-

-When you are done with a database, just delete the database object. -Example: -

-

-  ... open the db as described above ...
-  ... do something with db ...
-  delete db;
-
-

Reads And Writes

-

-The database provides Put, Delete, and Get methods to -modify/query the database. For example, the following code -moves the value stored under key1 to key2. -

-  std::string value;
-  leveldb::Status s = db->Get(leveldb::ReadOptions(), key1, &value);
-  if (s.ok()) s = db->Put(leveldb::WriteOptions(), key2, value);
-  if (s.ok()) s = db->Delete(leveldb::WriteOptions(), key1);
-
- -

Atomic Updates

-

-Note that if the process dies after the Put of key2 but before the -delete of key1, the same value may be left stored under multiple keys. -Such problems can be avoided by using the WriteBatch class to -atomically apply a set of updates: -

-

-  #include "leveldb/write_batch.h"
-  ...
-  std::string value;
-  leveldb::Status s = db->Get(leveldb::ReadOptions(), key1, &value);
-  if (s.ok()) {
-    leveldb::WriteBatch batch;
-    batch.Delete(key1);
-    batch.Put(key2, value);
-    s = db->Write(leveldb::WriteOptions(), &batch);
-  }
-
-The WriteBatch holds a sequence of edits to be made to the database, -and these edits within the batch are applied in order. Note that we -called Delete before Put so that if key1 is identical to key2, -we do not end up erroneously dropping the value entirely. -

-Apart from its atomicity benefits, WriteBatch may also be used to -speed up bulk updates by placing lots of individual mutations into the -same batch. - -

Synchronous Writes

-By default, each write to leveldb is asynchronous: it -returns after pushing the write from the process into the operating -system. The transfer from operating system memory to the underlying -persistent storage happens asynchronously. The sync flag -can be turned on for a particular write to make the write operation -not return until the data being written has been pushed all the way to -persistent storage. (On Posix systems, this is implemented by calling -either fsync(...) or fdatasync(...) or -msync(..., MS_SYNC) before the write operation returns.) -
-  leveldb::WriteOptions write_options;
-  write_options.sync = true;
-  db->Put(write_options, ...);
-
-Asynchronous writes are often more than a thousand times as fast as -synchronous writes. The downside of asynchronous writes is that a -crash of the machine may cause the last few updates to be lost. Note -that a crash of just the writing process (i.e., not a reboot) will not -cause any loss since even when sync is false, an update -is pushed from the process memory into the operating system before it -is considered done. - -

-Asynchronous writes can often be used safely. For example, when -loading a large amount of data into the database you can handle lost -updates by restarting the bulk load after a crash. A hybrid scheme is -also possible where every Nth write is synchronous, and in the event -of a crash, the bulk load is restarted just after the last synchronous -write finished by the previous run. (The synchronous write can update -a marker that describes where to restart on a crash.) - -

-WriteBatch provides an alternative to asynchronous writes. -Multiple updates may be placed in the same WriteBatch and -applied together using a synchronous write (i.e., -write_options.sync is set to true). The extra cost of -the synchronous write will be amortized across all of the writes in -the batch. - -

-

Concurrency

-

-A database may only be opened by one process at a time. -The leveldb implementation acquires a lock from the -operating system to prevent misuse. Within a single process, the -same leveldb::DB object may be safely shared by multiple -concurrent threads. I.e., different threads may write into or fetch -iterators or call Get on the same database without any -external synchronization (the leveldb implementation will -automatically do the required synchronization). However other objects -(like Iterator and WriteBatch) may require external synchronization. -If two threads share such an object, they must protect access to it -using their own locking protocol. More details are available in -the public header files. -

-

Iteration

-

-The following example demonstrates how to print all key,value pairs -in a database. -

-

-  leveldb::Iterator* it = db->NewIterator(leveldb::ReadOptions());
-  for (it->SeekToFirst(); it->Valid(); it->Next()) {
-    cout << it->key().ToString() << ": "  << it->value().ToString() << endl;
-  }
-  assert(it->status().ok());  // Check for any errors found during the scan
-  delete it;
-
-The following variation shows how to process just the keys in the -range [start,limit): -

-

-  for (it->Seek(start);
-       it->Valid() && it->key().ToString() < limit;
-       it->Next()) {
-    ...
-  }
-
-You can also process entries in reverse order. (Caveat: reverse -iteration may be somewhat slower than forward iteration.) -

-

-  for (it->SeekToLast(); it->Valid(); it->Prev()) {
-    ...
-  }
-
-

Snapshots

-

-Snapshots provide consistent read-only views over the entire state of -the key-value store. ReadOptions::snapshot may be non-NULL to indicate -that a read should operate on a particular version of the DB state. -If ReadOptions::snapshot is NULL, the read will operate on an -implicit snapshot of the current state. -

-Snapshots are created by the DB::GetSnapshot() method: -

-

-  leveldb::ReadOptions options;
-  options.snapshot = db->GetSnapshot();
-  ... apply some updates to db ...
-  leveldb::Iterator* iter = db->NewIterator(options);
-  ... read using iter to view the state when the snapshot was created ...
-  delete iter;
-  db->ReleaseSnapshot(options.snapshot);
-
-Note that when a snapshot is no longer needed, it should be released -using the DB::ReleaseSnapshot interface. This allows the -implementation to get rid of state that was being maintained just to -support reading as of that snapshot. -

Slice

-

-The return value of the it->key() and it->value() calls above -are instances of the leveldb::Slice type. Slice is a simple -structure that contains a length and a pointer to an external byte -array. Returning a Slice is a cheaper alternative to returning a -std::string since we do not need to copy potentially large keys and -values. In addition, leveldb methods do not return null-terminated -C-style strings since leveldb keys and values are allowed to -contain '\0' bytes. -

-C++ strings and null-terminated C-style strings can be easily converted -to a Slice: -

-

-   leveldb::Slice s1 = "hello";
-
-   std::string str("world");
-   leveldb::Slice s2 = str;
-
-A Slice can be easily converted back to a C++ string: -
-   std::string str = s1.ToString();
-   assert(str == std::string("hello"));
-
-Be careful when using Slices since it is up to the caller to ensure that -the external byte array into which the Slice points remains live while -the Slice is in use. For example, the following is buggy: -

-

-   leveldb::Slice slice;
-   if (...) {
-     std::string str = ...;
-     slice = str;
-   }
-   Use(slice);
-
-When the if statement goes out of scope, str will be destroyed and the -backing storage for slice will disappear. -

-

Comparators

-

-The preceding examples used the default ordering function for key, -which orders bytes lexicographically. You can however supply a custom -comparator when opening a database. For example, suppose each -database key consists of two numbers and we should sort by the first -number, breaking ties by the second number. First, define a proper -subclass of leveldb::Comparator that expresses these rules: -

-

-  class TwoPartComparator : public leveldb::Comparator {
-   public:
-    // Three-way comparison function:
-    //   if a < b: negative result
-    //   if a > b: positive result
-    //   else: zero result
-    int Compare(const leveldb::Slice& a, const leveldb::Slice& b) const {
-      int a1, a2, b1, b2;
-      ParseKey(a, &a1, &a2);
-      ParseKey(b, &b1, &b2);
-      if (a1 < b1) return -1;
-      if (a1 > b1) return +1;
-      if (a2 < b2) return -1;
-      if (a2 > b2) return +1;
-      return 0;
-    }
-
-    // Ignore the following methods for now:
-    const char* Name() const { return "TwoPartComparator"; }
-    void FindShortestSeparator(std::string*, const leveldb::Slice&) const { }
-    void FindShortSuccessor(std::string*) const { }
-  };
-
-Now create a database using this custom comparator: -

-

-  TwoPartComparator cmp;
-  leveldb::DB* db;
-  leveldb::Options options;
-  options.create_if_missing = true;
-  options.comparator = &cmp;
-  leveldb::Status status = leveldb::DB::Open(options, "/tmp/testdb", &db);
-  ...
-
-

Backwards compatibility

-

-The result of the comparator's Name method is attached to the -database when it is created, and is checked on every subsequent -database open. If the name changes, the leveldb::DB::Open call will -fail. Therefore, change the name if and only if the new key format -and comparison function are incompatible with existing databases, and -it is ok to discard the contents of all existing databases. -

-You can however still gradually evolve your key format over time with -a little bit of pre-planning. For example, you could store a version -number at the end of each key (one byte should suffice for most uses). -When you wish to switch to a new key format (e.g., adding an optional -third part to the keys processed by TwoPartComparator), -(a) keep the same comparator name (b) increment the version number -for new keys (c) change the comparator function so it uses the -version numbers found in the keys to decide how to interpret them. -

-

Performance

-

-Performance can be tuned by changing the default values of the -types defined in include/leveldb/options.h. - -

-

Block size

-

-leveldb groups adjacent keys together into the same block and such a -block is the unit of transfer to and from persistent storage. The -default block size is approximately 4096 uncompressed bytes. -Applications that mostly do bulk scans over the contents of the -database may wish to increase this size. Applications that do a lot -of point reads of small values may wish to switch to a smaller block -size if performance measurements indicate an improvement. There isn't -much benefit in using blocks smaller than one kilobyte, or larger than -a few megabytes. Also note that compression will be more effective -with larger block sizes. -

-

Compression

-

-Each block is individually compressed before being written to -persistent storage. Compression is on by default since the default -compression method is very fast, and is automatically disabled for -uncompressible data. In rare cases, applications may want to disable -compression entirely, but should only do so if benchmarks show a -performance improvement: -

-

-  leveldb::Options options;
-  options.compression = leveldb::kNoCompression;
-  ... leveldb::DB::Open(options, name, ...) ....
-
-

Cache

-

-The contents of the database are stored in a set of files in the -filesystem and each file stores a sequence of compressed blocks. If -options.cache is non-NULL, it is used to cache frequently used -uncompressed block contents. -

-

-  #include "leveldb/cache.h"
-
-  leveldb::Options options;
-  options.cache = leveldb::NewLRUCache(100 * 1048576);  // 100MB cache
-  leveldb::DB* db;
-  leveldb::DB::Open(options, name, &db);
-  ... use the db ...
-  delete db
-  delete options.cache;
-
-Note that the cache holds uncompressed data, and therefore it should -be sized according to application level data sizes, without any -reduction from compression. (Caching of compressed blocks is left to -the operating system buffer cache, or any custom Env -implementation provided by the client.) -

-When performing a bulk read, the application may wish to disable -caching so that the data processed by the bulk read does not end up -displacing most of the cached contents. A per-iterator option can be -used to achieve this: -

-

-  leveldb::ReadOptions options;
-  options.fill_cache = false;
-  leveldb::Iterator* it = db->NewIterator(options);
-  for (it->SeekToFirst(); it->Valid(); it->Next()) {
-    ...
-  }
-
-

Key Layout

-

-Note that the unit of disk transfer and caching is a block. Adjacent -keys (according to the database sort order) will usually be placed in -the same block. Therefore the application can improve its performance -by placing keys that are accessed together near each other and placing -infrequently used keys in a separate region of the key space. -

-For example, suppose we are implementing a simple file system on top -of leveldb. The types of entries we might wish to store are: -

-

-   filename -> permission-bits, length, list of file_block_ids
-   file_block_id -> data
-
-We might want to prefix filename keys with one letter (say '/') and the -file_block_id keys with a different letter (say '0') so that scans -over just the metadata do not force us to fetch and cache bulky file -contents. -

-

Filters

-

-Because of the way leveldb data is organized on disk, -a single Get() call may involve multiple reads from disk. -The optional FilterPolicy mechanism can be used to reduce -the number of disk reads substantially. -

-   leveldb::Options options;
-   options.filter_policy = NewBloomFilterPolicy(10);
-   leveldb::DB* db;
-   leveldb::DB::Open(options, "/tmp/testdb", &db);
-   ... use the database ...
-   delete db;
-   delete options.filter_policy;
-
-The preceding code associates a -Bloom filter -based filtering policy with the database. Bloom filter based -filtering relies on keeping some number of bits of data in memory per -key (in this case 10 bits per key since that is the argument we passed -to NewBloomFilterPolicy). This filter will reduce the number of unnecessary -disk reads needed for Get() calls by a factor of -approximately a 100. Increasing the bits per key will lead to a -larger reduction at the cost of more memory usage. We recommend that -applications whose working set does not fit in memory and that do a -lot of random reads set a filter policy. -

-If you are using a custom comparator, you should ensure that the filter -policy you are using is compatible with your comparator. For example, -consider a comparator that ignores trailing spaces when comparing keys. -NewBloomFilterPolicy must not be used with such a comparator. -Instead, the application should provide a custom filter policy that -also ignores trailing spaces. For example: -

-  class CustomFilterPolicy : public leveldb::FilterPolicy {
-   private:
-    FilterPolicy* builtin_policy_;
-   public:
-    CustomFilterPolicy() : builtin_policy_(NewBloomFilterPolicy(10)) { }
-    ~CustomFilterPolicy() { delete builtin_policy_; }
-
-    const char* Name() const { return "IgnoreTrailingSpacesFilter"; }
-
-    void CreateFilter(const Slice* keys, int n, std::string* dst) const {
-      // Use builtin bloom filter code after removing trailing spaces
-      std::vector<Slice> trimmed(n);
-      for (int i = 0; i < n; i++) {
-        trimmed[i] = RemoveTrailingSpaces(keys[i]);
-      }
-      return builtin_policy_->CreateFilter(&trimmed[i], n, dst);
-    }
-
-    bool KeyMayMatch(const Slice& key, const Slice& filter) const {
-      // Use builtin bloom filter code after removing trailing spaces
-      return builtin_policy_->KeyMayMatch(RemoveTrailingSpaces(key), filter);
-    }
-  };
-
-

-Advanced applications may provide a filter policy that does not use -a bloom filter but uses some other mechanism for summarizing a set -of keys. See leveldb/filter_policy.h for detail. -

-

Checksums

-

-leveldb associates checksums with all data it stores in the file system. -There are two separate controls provided over how aggressively these -checksums are verified: -

-

    -
  • ReadOptions::verify_checksums may be set to true to force - checksum verification of all data that is read from the file system on - behalf of a particular read. By default, no such verification is - done. -

    -

  • Options::paranoid_checks may be set to true before opening a - database to make the database implementation raise an error as soon as - it detects an internal corruption. Depending on which portion of the - database has been corrupted, the error may be raised when the database - is opened, or later by another database operation. By default, - paranoid checking is off so that the database can be used even if - parts of its persistent storage have been corrupted. -

    - If a database is corrupted (perhaps it cannot be opened when - paranoid checking is turned on), the leveldb::RepairDB function - may be used to recover as much of the data as possible -

    -

-

Approximate Sizes

-

-The GetApproximateSizes method can used to get the approximate -number of bytes of file system space used by one or more key ranges. -

-

-   leveldb::Range ranges[2];
-   ranges[0] = leveldb::Range("a", "c");
-   ranges[1] = leveldb::Range("x", "z");
-   uint64_t sizes[2];
-   leveldb::Status s = db->GetApproximateSizes(ranges, 2, sizes);
-
-The preceding call will set sizes[0] to the approximate number of -bytes of file system space used by the key range [a..c) and -sizes[1] to the approximate number of bytes used by the key range -[x..z). -

-

Environment

-

-All file operations (and other operating system calls) issued by the -leveldb implementation are routed through a leveldb::Env object. -Sophisticated clients may wish to provide their own Env -implementation to get better control. For example, an application may -introduce artificial delays in the file IO paths to limit the impact -of leveldb on other activities in the system. -

-

-  class SlowEnv : public leveldb::Env {
-    .. implementation of the Env interface ...
-  };
-
-  SlowEnv env;
-  leveldb::Options options;
-  options.env = &env;
-  Status s = leveldb::DB::Open(options, ...);
-
-

Porting

-

-leveldb may be ported to a new platform by providing platform -specific implementations of the types/methods/functions exported by -leveldb/port/port.h. See leveldb/port/port_example.h for more -details. -

-In addition, the new platform may need a new default leveldb::Env -implementation. See leveldb/util/env_posix.h for an example. - -

Other Information

- -

-Details about the leveldb implementation may be found in -the following documents: -

- - - diff --git a/leveldb-1.18/doc/log_format.txt b/leveldb-1.18/doc/log_format.txt deleted file mode 100644 index 4cca5ef..0000000 --- a/leveldb-1.18/doc/log_format.txt +++ /dev/null @@ -1,75 +0,0 @@ -The log file contents are a sequence of 32KB blocks. The only -exception is that the tail of the file may contain a partial block. - -Each block consists of a sequence of records: - block := record* trailer? - record := - checksum: uint32 // crc32c of type and data[] ; little-endian - length: uint16 // little-endian - type: uint8 // One of FULL, FIRST, MIDDLE, LAST - data: uint8[length] - -A record never starts within the last six bytes of a block (since it -won't fit). Any leftover bytes here form the trailer, which must -consist entirely of zero bytes and must be skipped by readers. - -Aside: if exactly seven bytes are left in the current block, and a new -non-zero length record is added, the writer must emit a FIRST record -(which contains zero bytes of user data) to fill up the trailing seven -bytes of the block and then emit all of the user data in subsequent -blocks. - -More types may be added in the future. Some Readers may skip record -types they do not understand, others may report that some data was -skipped. - -FULL == 1 -FIRST == 2 -MIDDLE == 3 -LAST == 4 - -The FULL record contains the contents of an entire user record. - -FIRST, MIDDLE, LAST are types used for user records that have been -split into multiple fragments (typically because of block boundaries). -FIRST is the type of the first fragment of a user record, LAST is the -type of the last fragment of a user record, and MIDDLE is the type of -all interior fragments of a user record. - -Example: consider a sequence of user records: - A: length 1000 - B: length 97270 - C: length 8000 -A will be stored as a FULL record in the first block. - -B will be split into three fragments: first fragment occupies the rest -of the first block, second fragment occupies the entirety of the -second block, and the third fragment occupies a prefix of the third -block. This will leave six bytes free in the third block, which will -be left empty as the trailer. - -C will be stored as a FULL record in the fourth block. - -=================== - -Some benefits over the recordio format: - -(1) We do not need any heuristics for resyncing - just go to next -block boundary and scan. If there is a corruption, skip to the next -block. As a side-benefit, we do not get confused when part of the -contents of one log file are embedded as a record inside another log -file. - -(2) Splitting at approximate boundaries (e.g., for mapreduce) is -simple: find the next block boundary and skip records until we -hit a FULL or FIRST record. - -(3) We do not need extra buffering for large records. - -Some downsides compared to recordio format: - -(1) No packing of tiny records. This could be fixed by adding a new -record type, so it is a shortcoming of the current implementation, -not necessarily the format. - -(2) No compression. Again, this could be fixed by adding new record types. diff --git a/leveldb-1.18/doc/table_format.txt b/leveldb-1.18/doc/table_format.txt deleted file mode 100644 index ca8f9b4..0000000 --- a/leveldb-1.18/doc/table_format.txt +++ /dev/null @@ -1,104 +0,0 @@ -File format -=========== - - - [data block 1] - [data block 2] - ... - [data block N] - [meta block 1] - ... - [meta block K] - [metaindex block] - [index block] - [Footer] (fixed size; starts at file_size - sizeof(Footer)) - - -The file contains internal pointers. Each such pointer is called -a BlockHandle and contains the following information: - offset: varint64 - size: varint64 -See https://developers.google.com/protocol-buffers/docs/encoding#varints -for an explanation of varint64 format. - -(1) The sequence of key/value pairs in the file are stored in sorted -order and partitioned into a sequence of data blocks. These blocks -come one after another at the beginning of the file. Each data block -is formatted according to the code in block_builder.cc, and then -optionally compressed. - -(2) After the data blocks we store a bunch of meta blocks. The -supported meta block types are described below. More meta block types -may be added in the future. Each meta block is again formatted using -block_builder.cc and then optionally compressed. - -(3) A "metaindex" block. It contains one entry for every other meta -block where the key is the name of the meta block and the value is a -BlockHandle pointing to that meta block. - -(4) An "index" block. This block contains one entry per data block, -where the key is a string >= last key in that data block and before -the first key in the successive data block. The value is the -BlockHandle for the data block. - -(6) At the very end of the file is a fixed length footer that contains -the BlockHandle of the metaindex and index blocks as well as a magic number. - metaindex_handle: char[p]; // Block handle for metaindex - index_handle: char[q]; // Block handle for index - padding: char[40-p-q]; // zeroed bytes to make fixed length - // (40==2*BlockHandle::kMaxEncodedLength) - magic: fixed64; // == 0xdb4775248b80fb57 (little-endian) - -"filter" Meta Block -------------------- - -If a "FilterPolicy" was specified when the database was opened, a -filter block is stored in each table. The "metaindex" block contains -an entry that maps from "filter." to the BlockHandle for the filter -block where "" is the string returned by the filter policy's -"Name()" method. - -The filter block stores a sequence of filters, where filter i contains -the output of FilterPolicy::CreateFilter() on all keys that are stored -in a block whose file offset falls within the range - - [ i*base ... (i+1)*base-1 ] - -Currently, "base" is 2KB. So for example, if blocks X and Y start in -the range [ 0KB .. 2KB-1 ], all of the keys in X and Y will be -converted to a filter by calling FilterPolicy::CreateFilter(), and the -resulting filter will be stored as the first filter in the filter -block. - -The filter block is formatted as follows: - - [filter 0] - [filter 1] - [filter 2] - ... - [filter N-1] - - [offset of filter 0] : 4 bytes - [offset of filter 1] : 4 bytes - [offset of filter 2] : 4 bytes - ... - [offset of filter N-1] : 4 bytes - - [offset of beginning of offset array] : 4 bytes - lg(base) : 1 byte - -The offset array at the end of the filter block allows efficient -mapping from a data block offset to the corresponding filter. - -"stats" Meta Block ------------------- - -This meta block contains a bunch of stats. The key is the name -of the statistic. The value contains the statistic. -TODO(postrelease): record following stats. - data size - index size - key size (uncompressed) - value size (uncompressed) - number of entries - number of data blocks diff --git a/leveldb-1.18/helpers/memenv/memenv.cc b/leveldb-1.18/helpers/memenv/memenv.cc deleted file mode 100644 index 43ef2e0..0000000 --- a/leveldb-1.18/helpers/memenv/memenv.cc +++ /dev/null @@ -1,385 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "helpers/memenv/memenv.h" - -#include "leveldb/env.h" -#include "leveldb/status.h" -#include "port/port.h" -#include "util/mutexlock.h" -#include -#include -#include -#include - -namespace leveldb { - -namespace { - -class FileState { - public: - // FileStates are reference counted. The initial reference count is zero - // and the caller must call Ref() at least once. - FileState() : refs_(0), size_(0) {} - - // Increase the reference count. - void Ref() { - MutexLock lock(&refs_mutex_); - ++refs_; - } - - // Decrease the reference count. Delete if this is the last reference. - void Unref() { - bool do_delete = false; - - { - MutexLock lock(&refs_mutex_); - --refs_; - assert(refs_ >= 0); - if (refs_ <= 0) { - do_delete = true; - } - } - - if (do_delete) { - delete this; - } - } - - uint64_t Size() const { return size_; } - - Status Read(uint64_t offset, size_t n, Slice* result, char* scratch) const { - if (offset > size_) { - return Status::IOError("Offset greater than file size."); - } - const uint64_t available = size_ - offset; - if (n > available) { - n = static_cast(available); - } - if (n == 0) { - *result = Slice(); - return Status::OK(); - } - - assert(offset / kBlockSize <= SIZE_MAX); - size_t block = static_cast(offset / kBlockSize); - size_t block_offset = offset % kBlockSize; - - if (n <= kBlockSize - block_offset) { - // The requested bytes are all in the first block. - *result = Slice(blocks_[block] + block_offset, n); - return Status::OK(); - } - - size_t bytes_to_copy = n; - char* dst = scratch; - - while (bytes_to_copy > 0) { - size_t avail = kBlockSize - block_offset; - if (avail > bytes_to_copy) { - avail = bytes_to_copy; - } - memcpy(dst, blocks_[block] + block_offset, avail); - - bytes_to_copy -= avail; - dst += avail; - block++; - block_offset = 0; - } - - *result = Slice(scratch, n); - return Status::OK(); - } - - Status Append(const Slice& data) { - const char* src = data.data(); - size_t src_len = data.size(); - - while (src_len > 0) { - size_t avail; - size_t offset = size_ % kBlockSize; - - if (offset != 0) { - // There is some room in the last block. - avail = kBlockSize - offset; - } else { - // No room in the last block; push new one. - blocks_.push_back(new char[kBlockSize]); - avail = kBlockSize; - } - - if (avail > src_len) { - avail = src_len; - } - memcpy(blocks_.back() + offset, src, avail); - src_len -= avail; - src += avail; - size_ += avail; - } - - return Status::OK(); - } - - private: - // Private since only Unref() should be used to delete it. - ~FileState() { - for (std::vector::iterator i = blocks_.begin(); i != blocks_.end(); - ++i) { - delete [] *i; - } - } - - // No copying allowed. - FileState(const FileState&); - void operator=(const FileState&); - - port::Mutex refs_mutex_; - int refs_; // Protected by refs_mutex_; - - // The following fields are not protected by any mutex. They are only mutable - // while the file is being written, and concurrent access is not allowed - // to writable files. - std::vector blocks_; - uint64_t size_; - - enum { kBlockSize = 8 * 1024 }; -}; - -class SequentialFileImpl : public SequentialFile { - public: - explicit SequentialFileImpl(FileState* file) : file_(file), pos_(0) { - file_->Ref(); - } - - ~SequentialFileImpl() { - file_->Unref(); - } - - virtual Status Read(size_t n, Slice* result, char* scratch) { - Status s = file_->Read(pos_, n, result, scratch); - if (s.ok()) { - pos_ += result->size(); - } - return s; - } - - virtual Status Skip(uint64_t n) { - if (pos_ > file_->Size()) { - return Status::IOError("pos_ > file_->Size()"); - } - const uint64_t available = file_->Size() - pos_; - if (n > available) { - n = available; - } - pos_ += n; - return Status::OK(); - } - - private: - FileState* file_; - uint64_t pos_; -}; - -class RandomAccessFileImpl : public RandomAccessFile { - public: - explicit RandomAccessFileImpl(FileState* file) : file_(file) { - file_->Ref(); - } - - ~RandomAccessFileImpl() { - file_->Unref(); - } - - virtual Status Read(uint64_t offset, size_t n, Slice* result, - char* scratch) const { - return file_->Read(offset, n, result, scratch); - } - - private: - FileState* file_; -}; - -class WritableFileImpl : public WritableFile { - public: - WritableFileImpl(FileState* file) : file_(file) { - file_->Ref(); - } - - ~WritableFileImpl() { - file_->Unref(); - } - - virtual Status Append(const Slice& data) { - return file_->Append(data); - } - - virtual Status Close() { return Status::OK(); } - virtual Status Flush() { return Status::OK(); } - virtual Status Sync() { return Status::OK(); } - - private: - FileState* file_; -}; - -class NoOpLogger : public Logger { - public: - virtual void Logv(const char* format, va_list ap) { } -}; - -class InMemoryEnv : public EnvWrapper { - public: - explicit InMemoryEnv(Env* base_env) : EnvWrapper(base_env) { } - - virtual ~InMemoryEnv() { - for (FileSystem::iterator i = file_map_.begin(); i != file_map_.end(); ++i){ - i->second->Unref(); - } - } - - // Partial implementation of the Env interface. - virtual Status NewSequentialFile(const std::string& fname, - SequentialFile** result) { - MutexLock lock(&mutex_); - if (file_map_.find(fname) == file_map_.end()) { - *result = NULL; - return Status::IOError(fname, "File not found"); - } - - *result = new SequentialFileImpl(file_map_[fname]); - return Status::OK(); - } - - virtual Status NewRandomAccessFile(const std::string& fname, - RandomAccessFile** result) { - MutexLock lock(&mutex_); - if (file_map_.find(fname) == file_map_.end()) { - *result = NULL; - return Status::IOError(fname, "File not found"); - } - - *result = new RandomAccessFileImpl(file_map_[fname]); - return Status::OK(); - } - - virtual Status NewWritableFile(const std::string& fname, - WritableFile** result) { - MutexLock lock(&mutex_); - if (file_map_.find(fname) != file_map_.end()) { - DeleteFileInternal(fname); - } - - FileState* file = new FileState(); - file->Ref(); - file_map_[fname] = file; - - *result = new WritableFileImpl(file); - return Status::OK(); - } - - virtual bool FileExists(const std::string& fname) { - MutexLock lock(&mutex_); - return file_map_.find(fname) != file_map_.end(); - } - - virtual Status GetChildren(const std::string& dir, - std::vector* result) { - MutexLock lock(&mutex_); - result->clear(); - - for (FileSystem::iterator i = file_map_.begin(); i != file_map_.end(); ++i){ - const std::string& filename = i->first; - - if (filename.size() >= dir.size() + 1 && filename[dir.size()] == '/' && - Slice(filename).starts_with(Slice(dir))) { - result->push_back(filename.substr(dir.size() + 1)); - } - } - - return Status::OK(); - } - - void DeleteFileInternal(const std::string& fname) { - if (file_map_.find(fname) == file_map_.end()) { - return; - } - - file_map_[fname]->Unref(); - file_map_.erase(fname); - } - - virtual Status DeleteFile(const std::string& fname) { - MutexLock lock(&mutex_); - if (file_map_.find(fname) == file_map_.end()) { - return Status::IOError(fname, "File not found"); - } - - DeleteFileInternal(fname); - return Status::OK(); - } - - virtual Status CreateDir(const std::string& dirname) { - return Status::OK(); - } - - virtual Status DeleteDir(const std::string& dirname) { - return Status::OK(); - } - - virtual Status GetFileSize(const std::string& fname, uint64_t* file_size) { - MutexLock lock(&mutex_); - if (file_map_.find(fname) == file_map_.end()) { - return Status::IOError(fname, "File not found"); - } - - *file_size = file_map_[fname]->Size(); - return Status::OK(); - } - - virtual Status RenameFile(const std::string& src, - const std::string& target) { - MutexLock lock(&mutex_); - if (file_map_.find(src) == file_map_.end()) { - return Status::IOError(src, "File not found"); - } - - DeleteFileInternal(target); - file_map_[target] = file_map_[src]; - file_map_.erase(src); - return Status::OK(); - } - - virtual Status LockFile(const std::string& fname, FileLock** lock) { - *lock = new FileLock; - return Status::OK(); - } - - virtual Status UnlockFile(FileLock* lock) { - delete lock; - return Status::OK(); - } - - virtual Status GetTestDirectory(std::string* path) { - *path = "/test"; - return Status::OK(); - } - - virtual Status NewLogger(const std::string& fname, Logger** result) { - *result = new NoOpLogger; - return Status::OK(); - } - - private: - // Map from filenames to FileState objects, representing a simple file system. - typedef std::map FileSystem; - port::Mutex mutex_; - FileSystem file_map_; // Protected by mutex_. -}; - -} // namespace - -Env* NewMemEnv(Env* base_env) { - return new InMemoryEnv(base_env); -} - -} // namespace leveldb diff --git a/leveldb-1.18/helpers/memenv/memenv.h b/leveldb-1.18/helpers/memenv/memenv.h deleted file mode 100644 index 03b88de..0000000 --- a/leveldb-1.18/helpers/memenv/memenv.h +++ /dev/null @@ -1,20 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_HELPERS_MEMENV_MEMENV_H_ -#define STORAGE_LEVELDB_HELPERS_MEMENV_MEMENV_H_ - -namespace leveldb { - -class Env; - -// Returns a new environment that stores its data in memory and delegates -// all non-file-storage tasks to base_env. The caller must delete the result -// when it is no longer needed. -// *base_env must remain live while the result is in use. -Env* NewMemEnv(Env* base_env); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_HELPERS_MEMENV_MEMENV_H_ diff --git a/leveldb-1.18/helpers/memenv/memenv_test.cc b/leveldb-1.18/helpers/memenv/memenv_test.cc deleted file mode 100644 index a44310f..0000000 --- a/leveldb-1.18/helpers/memenv/memenv_test.cc +++ /dev/null @@ -1,232 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "helpers/memenv/memenv.h" - -#include "db/db_impl.h" -#include "leveldb/db.h" -#include "leveldb/env.h" -#include "util/testharness.h" -#include -#include - -namespace leveldb { - -class MemEnvTest { - public: - Env* env_; - - MemEnvTest() - : env_(NewMemEnv(Env::Default())) { - } - ~MemEnvTest() { - delete env_; - } -}; - -TEST(MemEnvTest, Basics) { - uint64_t file_size; - WritableFile* writable_file; - std::vector children; - - ASSERT_OK(env_->CreateDir("/dir")); - - // Check that the directory is empty. - ASSERT_TRUE(!env_->FileExists("/dir/non_existent")); - ASSERT_TRUE(!env_->GetFileSize("/dir/non_existent", &file_size).ok()); - ASSERT_OK(env_->GetChildren("/dir", &children)); - ASSERT_EQ(0, children.size()); - - // Create a file. - ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file)); - delete writable_file; - - // Check that the file exists. - ASSERT_TRUE(env_->FileExists("/dir/f")); - ASSERT_OK(env_->GetFileSize("/dir/f", &file_size)); - ASSERT_EQ(0, file_size); - ASSERT_OK(env_->GetChildren("/dir", &children)); - ASSERT_EQ(1, children.size()); - ASSERT_EQ("f", children[0]); - - // Write to the file. - ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file)); - ASSERT_OK(writable_file->Append("abc")); - delete writable_file; - - // Check for expected size. - ASSERT_OK(env_->GetFileSize("/dir/f", &file_size)); - ASSERT_EQ(3, file_size); - - // Check that renaming works. - ASSERT_TRUE(!env_->RenameFile("/dir/non_existent", "/dir/g").ok()); - ASSERT_OK(env_->RenameFile("/dir/f", "/dir/g")); - ASSERT_TRUE(!env_->FileExists("/dir/f")); - ASSERT_TRUE(env_->FileExists("/dir/g")); - ASSERT_OK(env_->GetFileSize("/dir/g", &file_size)); - ASSERT_EQ(3, file_size); - - // Check that opening non-existent file fails. - SequentialFile* seq_file; - RandomAccessFile* rand_file; - ASSERT_TRUE(!env_->NewSequentialFile("/dir/non_existent", &seq_file).ok()); - ASSERT_TRUE(!seq_file); - ASSERT_TRUE(!env_->NewRandomAccessFile("/dir/non_existent", &rand_file).ok()); - ASSERT_TRUE(!rand_file); - - // Check that deleting works. - ASSERT_TRUE(!env_->DeleteFile("/dir/non_existent").ok()); - ASSERT_OK(env_->DeleteFile("/dir/g")); - ASSERT_TRUE(!env_->FileExists("/dir/g")); - ASSERT_OK(env_->GetChildren("/dir", &children)); - ASSERT_EQ(0, children.size()); - ASSERT_OK(env_->DeleteDir("/dir")); -} - -TEST(MemEnvTest, ReadWrite) { - WritableFile* writable_file; - SequentialFile* seq_file; - RandomAccessFile* rand_file; - Slice result; - char scratch[100]; - - ASSERT_OK(env_->CreateDir("/dir")); - - ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file)); - ASSERT_OK(writable_file->Append("hello ")); - ASSERT_OK(writable_file->Append("world")); - delete writable_file; - - // Read sequentially. - ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file)); - ASSERT_OK(seq_file->Read(5, &result, scratch)); // Read "hello". - ASSERT_EQ(0, result.compare("hello")); - ASSERT_OK(seq_file->Skip(1)); - ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Read "world". - ASSERT_EQ(0, result.compare("world")); - ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Try reading past EOF. - ASSERT_EQ(0, result.size()); - ASSERT_OK(seq_file->Skip(100)); // Try to skip past end of file. - ASSERT_OK(seq_file->Read(1000, &result, scratch)); - ASSERT_EQ(0, result.size()); - delete seq_file; - - // Random reads. - ASSERT_OK(env_->NewRandomAccessFile("/dir/f", &rand_file)); - ASSERT_OK(rand_file->Read(6, 5, &result, scratch)); // Read "world". - ASSERT_EQ(0, result.compare("world")); - ASSERT_OK(rand_file->Read(0, 5, &result, scratch)); // Read "hello". - ASSERT_EQ(0, result.compare("hello")); - ASSERT_OK(rand_file->Read(10, 100, &result, scratch)); // Read "d". - ASSERT_EQ(0, result.compare("d")); - - // Too high offset. - ASSERT_TRUE(!rand_file->Read(1000, 5, &result, scratch).ok()); - delete rand_file; -} - -TEST(MemEnvTest, Locks) { - FileLock* lock; - - // These are no-ops, but we test they return success. - ASSERT_OK(env_->LockFile("some file", &lock)); - ASSERT_OK(env_->UnlockFile(lock)); -} - -TEST(MemEnvTest, Misc) { - std::string test_dir; - ASSERT_OK(env_->GetTestDirectory(&test_dir)); - ASSERT_TRUE(!test_dir.empty()); - - WritableFile* writable_file; - ASSERT_OK(env_->NewWritableFile("/a/b", &writable_file)); - - // These are no-ops, but we test they return success. - ASSERT_OK(writable_file->Sync()); - ASSERT_OK(writable_file->Flush()); - ASSERT_OK(writable_file->Close()); - delete writable_file; -} - -TEST(MemEnvTest, LargeWrite) { - const size_t kWriteSize = 300 * 1024; - char* scratch = new char[kWriteSize * 2]; - - std::string write_data; - for (size_t i = 0; i < kWriteSize; ++i) { - write_data.append(1, static_cast(i)); - } - - WritableFile* writable_file; - ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file)); - ASSERT_OK(writable_file->Append("foo")); - ASSERT_OK(writable_file->Append(write_data)); - delete writable_file; - - SequentialFile* seq_file; - Slice result; - ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file)); - ASSERT_OK(seq_file->Read(3, &result, scratch)); // Read "foo". - ASSERT_EQ(0, result.compare("foo")); - - size_t read = 0; - std::string read_data; - while (read < kWriteSize) { - ASSERT_OK(seq_file->Read(kWriteSize - read, &result, scratch)); - read_data.append(result.data(), result.size()); - read += result.size(); - } - ASSERT_TRUE(write_data == read_data); - delete seq_file; - delete [] scratch; -} - -TEST(MemEnvTest, DBTest) { - Options options; - options.create_if_missing = true; - options.env = env_; - DB* db; - - const Slice keys[] = {Slice("aaa"), Slice("bbb"), Slice("ccc")}; - const Slice vals[] = {Slice("foo"), Slice("bar"), Slice("baz")}; - - ASSERT_OK(DB::Open(options, "/dir/db", &db)); - for (size_t i = 0; i < 3; ++i) { - ASSERT_OK(db->Put(WriteOptions(), keys[i], vals[i])); - } - - for (size_t i = 0; i < 3; ++i) { - std::string res; - ASSERT_OK(db->Get(ReadOptions(), keys[i], &res)); - ASSERT_TRUE(res == vals[i]); - } - - Iterator* iterator = db->NewIterator(ReadOptions()); - iterator->SeekToFirst(); - for (size_t i = 0; i < 3; ++i) { - ASSERT_TRUE(iterator->Valid()); - ASSERT_TRUE(keys[i] == iterator->key()); - ASSERT_TRUE(vals[i] == iterator->value()); - iterator->Next(); - } - ASSERT_TRUE(!iterator->Valid()); - delete iterator; - - DBImpl* dbi = reinterpret_cast(db); - ASSERT_OK(dbi->TEST_CompactMemTable()); - - for (size_t i = 0; i < 3; ++i) { - std::string res; - ASSERT_OK(db->Get(ReadOptions(), keys[i], &res)); - ASSERT_TRUE(res == vals[i]); - } - - delete db; -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/include/leveldb/c.h b/leveldb-1.18/include/leveldb/c.h deleted file mode 100644 index 1048fe3..0000000 --- a/leveldb-1.18/include/leveldb/c.h +++ /dev/null @@ -1,290 +0,0 @@ -/* Copyright (c) 2011 The LevelDB Authors. All rights reserved. - Use of this source code is governed by a BSD-style license that can be - found in the LICENSE file. See the AUTHORS file for names of contributors. - - C bindings for leveldb. May be useful as a stable ABI that can be - used by programs that keep leveldb in a shared library, or for - a JNI api. - - Does not support: - . getters for the option types - . custom comparators that implement key shortening - . custom iter, db, env, cache implementations using just the C bindings - - Some conventions: - - (1) We expose just opaque struct pointers and functions to clients. - This allows us to change internal representations without having to - recompile clients. - - (2) For simplicity, there is no equivalent to the Slice type. Instead, - the caller has to pass the pointer and length as separate - arguments. - - (3) Errors are represented by a null-terminated c string. NULL - means no error. All operations that can raise an error are passed - a "char** errptr" as the last argument. One of the following must - be true on entry: - *errptr == NULL - *errptr points to a malloc()ed null-terminated error message - (On Windows, *errptr must have been malloc()-ed by this library.) - On success, a leveldb routine leaves *errptr unchanged. - On failure, leveldb frees the old value of *errptr and - set *errptr to a malloc()ed error message. - - (4) Bools have the type unsigned char (0 == false; rest == true) - - (5) All of the pointer arguments must be non-NULL. -*/ - -#ifndef STORAGE_LEVELDB_INCLUDE_C_H_ -#define STORAGE_LEVELDB_INCLUDE_C_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -#include -#include -#include - -/* Exported types */ - -typedef struct leveldb_t leveldb_t; -typedef struct leveldb_cache_t leveldb_cache_t; -typedef struct leveldb_comparator_t leveldb_comparator_t; -typedef struct leveldb_env_t leveldb_env_t; -typedef struct leveldb_filelock_t leveldb_filelock_t; -typedef struct leveldb_filterpolicy_t leveldb_filterpolicy_t; -typedef struct leveldb_iterator_t leveldb_iterator_t; -typedef struct leveldb_logger_t leveldb_logger_t; -typedef struct leveldb_options_t leveldb_options_t; -typedef struct leveldb_randomfile_t leveldb_randomfile_t; -typedef struct leveldb_readoptions_t leveldb_readoptions_t; -typedef struct leveldb_seqfile_t leveldb_seqfile_t; -typedef struct leveldb_snapshot_t leveldb_snapshot_t; -typedef struct leveldb_writablefile_t leveldb_writablefile_t; -typedef struct leveldb_writebatch_t leveldb_writebatch_t; -typedef struct leveldb_writeoptions_t leveldb_writeoptions_t; - -/* DB operations */ - -extern leveldb_t* leveldb_open( - const leveldb_options_t* options, - const char* name, - char** errptr); - -extern void leveldb_close(leveldb_t* db); - -extern void leveldb_put( - leveldb_t* db, - const leveldb_writeoptions_t* options, - const char* key, size_t keylen, - const char* val, size_t vallen, - char** errptr); - -extern void leveldb_delete( - leveldb_t* db, - const leveldb_writeoptions_t* options, - const char* key, size_t keylen, - char** errptr); - -extern void leveldb_write( - leveldb_t* db, - const leveldb_writeoptions_t* options, - leveldb_writebatch_t* batch, - char** errptr); - -/* Returns NULL if not found. A malloc()ed array otherwise. - Stores the length of the array in *vallen. */ -extern char* leveldb_get( - leveldb_t* db, - const leveldb_readoptions_t* options, - const char* key, size_t keylen, - size_t* vallen, - char** errptr); - -extern leveldb_iterator_t* leveldb_create_iterator( - leveldb_t* db, - const leveldb_readoptions_t* options); - -extern const leveldb_snapshot_t* leveldb_create_snapshot( - leveldb_t* db); - -extern void leveldb_release_snapshot( - leveldb_t* db, - const leveldb_snapshot_t* snapshot); - -/* Returns NULL if property name is unknown. - Else returns a pointer to a malloc()-ed null-terminated value. */ -extern char* leveldb_property_value( - leveldb_t* db, - const char* propname); - -extern void leveldb_approximate_sizes( - leveldb_t* db, - int num_ranges, - const char* const* range_start_key, const size_t* range_start_key_len, - const char* const* range_limit_key, const size_t* range_limit_key_len, - uint64_t* sizes); - -extern void leveldb_compact_range( - leveldb_t* db, - const char* start_key, size_t start_key_len, - const char* limit_key, size_t limit_key_len); - -/* Management operations */ - -extern void leveldb_destroy_db( - const leveldb_options_t* options, - const char* name, - char** errptr); - -extern void leveldb_repair_db( - const leveldb_options_t* options, - const char* name, - char** errptr); - -/* Iterator */ - -extern void leveldb_iter_destroy(leveldb_iterator_t*); -extern unsigned char leveldb_iter_valid(const leveldb_iterator_t*); -extern void leveldb_iter_seek_to_first(leveldb_iterator_t*); -extern void leveldb_iter_seek_to_last(leveldb_iterator_t*); -extern void leveldb_iter_seek(leveldb_iterator_t*, const char* k, size_t klen); -extern void leveldb_iter_next(leveldb_iterator_t*); -extern void leveldb_iter_prev(leveldb_iterator_t*); -extern const char* leveldb_iter_key(const leveldb_iterator_t*, size_t* klen); -extern const char* leveldb_iter_value(const leveldb_iterator_t*, size_t* vlen); -extern void leveldb_iter_get_error(const leveldb_iterator_t*, char** errptr); - -/* Write batch */ - -extern leveldb_writebatch_t* leveldb_writebatch_create(); -extern void leveldb_writebatch_destroy(leveldb_writebatch_t*); -extern void leveldb_writebatch_clear(leveldb_writebatch_t*); -extern void leveldb_writebatch_put( - leveldb_writebatch_t*, - const char* key, size_t klen, - const char* val, size_t vlen); -extern void leveldb_writebatch_delete( - leveldb_writebatch_t*, - const char* key, size_t klen); -extern void leveldb_writebatch_iterate( - leveldb_writebatch_t*, - void* state, - void (*put)(void*, const char* k, size_t klen, const char* v, size_t vlen), - void (*deleted)(void*, const char* k, size_t klen)); - -/* Options */ - -extern leveldb_options_t* leveldb_options_create(); -extern void leveldb_options_destroy(leveldb_options_t*); -extern void leveldb_options_set_comparator( - leveldb_options_t*, - leveldb_comparator_t*); -extern void leveldb_options_set_filter_policy( - leveldb_options_t*, - leveldb_filterpolicy_t*); -extern void leveldb_options_set_create_if_missing( - leveldb_options_t*, unsigned char); -extern void leveldb_options_set_error_if_exists( - leveldb_options_t*, unsigned char); -extern void leveldb_options_set_paranoid_checks( - leveldb_options_t*, unsigned char); -extern void leveldb_options_set_env(leveldb_options_t*, leveldb_env_t*); -extern void leveldb_options_set_info_log(leveldb_options_t*, leveldb_logger_t*); -extern void leveldb_options_set_write_buffer_size(leveldb_options_t*, size_t); -extern void leveldb_options_set_max_open_files(leveldb_options_t*, int); -extern void leveldb_options_set_cache(leveldb_options_t*, leveldb_cache_t*); -extern void leveldb_options_set_block_size(leveldb_options_t*, size_t); -extern void leveldb_options_set_block_restart_interval(leveldb_options_t*, int); - -enum { - leveldb_no_compression = 0, - leveldb_snappy_compression = 1 -}; -extern void leveldb_options_set_compression(leveldb_options_t*, int); - -/* Comparator */ - -extern leveldb_comparator_t* leveldb_comparator_create( - void* state, - void (*destructor)(void*), - int (*compare)( - void*, - const char* a, size_t alen, - const char* b, size_t blen), - const char* (*name)(void*)); -extern void leveldb_comparator_destroy(leveldb_comparator_t*); - -/* Filter policy */ - -extern leveldb_filterpolicy_t* leveldb_filterpolicy_create( - void* state, - void (*destructor)(void*), - char* (*create_filter)( - void*, - const char* const* key_array, const size_t* key_length_array, - int num_keys, - size_t* filter_length), - unsigned char (*key_may_match)( - void*, - const char* key, size_t length, - const char* filter, size_t filter_length), - const char* (*name)(void*)); -extern void leveldb_filterpolicy_destroy(leveldb_filterpolicy_t*); - -extern leveldb_filterpolicy_t* leveldb_filterpolicy_create_bloom( - int bits_per_key); - -/* Read options */ - -extern leveldb_readoptions_t* leveldb_readoptions_create(); -extern void leveldb_readoptions_destroy(leveldb_readoptions_t*); -extern void leveldb_readoptions_set_verify_checksums( - leveldb_readoptions_t*, - unsigned char); -extern void leveldb_readoptions_set_fill_cache( - leveldb_readoptions_t*, unsigned char); -extern void leveldb_readoptions_set_snapshot( - leveldb_readoptions_t*, - const leveldb_snapshot_t*); - -/* Write options */ - -extern leveldb_writeoptions_t* leveldb_writeoptions_create(); -extern void leveldb_writeoptions_destroy(leveldb_writeoptions_t*); -extern void leveldb_writeoptions_set_sync( - leveldb_writeoptions_t*, unsigned char); - -/* Cache */ - -extern leveldb_cache_t* leveldb_cache_create_lru(size_t capacity); -extern void leveldb_cache_destroy(leveldb_cache_t* cache); - -/* Env */ - -extern leveldb_env_t* leveldb_create_default_env(); -extern void leveldb_env_destroy(leveldb_env_t*); - -/* Utility */ - -/* Calls free(ptr). - REQUIRES: ptr was malloc()-ed and returned by one of the routines - in this file. Note that in certain cases (typically on Windows), you - may need to call this routine instead of free(ptr) to dispose of - malloc()-ed memory returned by this library. */ -extern void leveldb_free(void* ptr); - -/* Return the major version number for this release. */ -extern int leveldb_major_version(); - -/* Return the minor version number for this release. */ -extern int leveldb_minor_version(); - -#ifdef __cplusplus -} /* end extern "C" */ -#endif - -#endif /* STORAGE_LEVELDB_INCLUDE_C_H_ */ diff --git a/leveldb-1.18/include/leveldb/cache.h b/leveldb-1.18/include/leveldb/cache.h deleted file mode 100644 index 1a201e5..0000000 --- a/leveldb-1.18/include/leveldb/cache.h +++ /dev/null @@ -1,99 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// A Cache is an interface that maps keys to values. It has internal -// synchronization and may be safely accessed concurrently from -// multiple threads. It may automatically evict entries to make room -// for new entries. Values have a specified charge against the cache -// capacity. For example, a cache where the values are variable -// length strings, may use the length of the string as the charge for -// the string. -// -// A builtin cache implementation with a least-recently-used eviction -// policy is provided. Clients may use their own implementations if -// they want something more sophisticated (like scan-resistance, a -// custom eviction policy, variable cache sizing, etc.) - -#ifndef STORAGE_LEVELDB_INCLUDE_CACHE_H_ -#define STORAGE_LEVELDB_INCLUDE_CACHE_H_ - -#include -#include "leveldb/slice.h" - -namespace leveldb { - -class Cache; - -// Create a new cache with a fixed size capacity. This implementation -// of Cache uses a least-recently-used eviction policy. -extern Cache* NewLRUCache(size_t capacity); - -class Cache { - public: - Cache() { } - - // Destroys all existing entries by calling the "deleter" - // function that was passed to the constructor. - virtual ~Cache(); - - // Opaque handle to an entry stored in the cache. - struct Handle { }; - - // Insert a mapping from key->value into the cache and assign it - // the specified charge against the total cache capacity. - // - // Returns a handle that corresponds to the mapping. The caller - // must call this->Release(handle) when the returned mapping is no - // longer needed. - // - // When the inserted entry is no longer needed, the key and - // value will be passed to "deleter". - virtual Handle* Insert(const Slice& key, void* value, size_t charge, - void (*deleter)(const Slice& key, void* value)) = 0; - - // If the cache has no mapping for "key", returns NULL. - // - // Else return a handle that corresponds to the mapping. The caller - // must call this->Release(handle) when the returned mapping is no - // longer needed. - virtual Handle* Lookup(const Slice& key) = 0; - - // Release a mapping returned by a previous Lookup(). - // REQUIRES: handle must not have been released yet. - // REQUIRES: handle must have been returned by a method on *this. - virtual void Release(Handle* handle) = 0; - - // Return the value encapsulated in a handle returned by a - // successful Lookup(). - // REQUIRES: handle must not have been released yet. - // REQUIRES: handle must have been returned by a method on *this. - virtual void* Value(Handle* handle) = 0; - - // If the cache contains entry for key, erase it. Note that the - // underlying entry will be kept around until all existing handles - // to it have been released. - virtual void Erase(const Slice& key) = 0; - - // Return a new numeric id. May be used by multiple clients who are - // sharing the same cache to partition the key space. Typically the - // client will allocate a new id at startup and prepend the id to - // its cache keys. - virtual uint64_t NewId() = 0; - - private: - void LRU_Remove(Handle* e); - void LRU_Append(Handle* e); - void Unref(Handle* e); - - struct Rep; - Rep* rep_; - - // No copying allowed - Cache(const Cache&); - void operator=(const Cache&); -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_CACHE_H_ diff --git a/leveldb-1.18/include/leveldb/comparator.h b/leveldb-1.18/include/leveldb/comparator.h deleted file mode 100644 index 556b984..0000000 --- a/leveldb-1.18/include/leveldb/comparator.h +++ /dev/null @@ -1,63 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_INCLUDE_COMPARATOR_H_ -#define STORAGE_LEVELDB_INCLUDE_COMPARATOR_H_ - -#include - -namespace leveldb { - -class Slice; - -// A Comparator object provides a total order across slices that are -// used as keys in an sstable or a database. A Comparator implementation -// must be thread-safe since leveldb may invoke its methods concurrently -// from multiple threads. -class Comparator { - public: - virtual ~Comparator(); - - // Three-way comparison. Returns value: - // < 0 iff "a" < "b", - // == 0 iff "a" == "b", - // > 0 iff "a" > "b" - virtual int Compare(const Slice& a, const Slice& b) const = 0; - - // The name of the comparator. Used to check for comparator - // mismatches (i.e., a DB created with one comparator is - // accessed using a different comparator. - // - // The client of this package should switch to a new name whenever - // the comparator implementation changes in a way that will cause - // the relative ordering of any two keys to change. - // - // Names starting with "leveldb." are reserved and should not be used - // by any clients of this package. - virtual const char* Name() const = 0; - - // Advanced functions: these are used to reduce the space requirements - // for internal data structures like index blocks. - - // If *start < limit, changes *start to a short string in [start,limit). - // Simple comparator implementations may return with *start unchanged, - // i.e., an implementation of this method that does nothing is correct. - virtual void FindShortestSeparator( - std::string* start, - const Slice& limit) const = 0; - - // Changes *key to a short string >= *key. - // Simple comparator implementations may return with *key unchanged, - // i.e., an implementation of this method that does nothing is correct. - virtual void FindShortSuccessor(std::string* key) const = 0; -}; - -// Return a builtin comparator that uses lexicographic byte-wise -// ordering. The result remains the property of this module and -// must not be deleted. -extern const Comparator* BytewiseComparator(); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_COMPARATOR_H_ diff --git a/leveldb-1.18/include/leveldb/db.h b/leveldb-1.18/include/leveldb/db.h deleted file mode 100644 index 4c169bf..0000000 --- a/leveldb-1.18/include/leveldb/db.h +++ /dev/null @@ -1,161 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_INCLUDE_DB_H_ -#define STORAGE_LEVELDB_INCLUDE_DB_H_ - -#include -#include -#include "leveldb/iterator.h" -#include "leveldb/options.h" - -namespace leveldb { - -// Update Makefile if you change these -static const int kMajorVersion = 1; -static const int kMinorVersion = 18; - -struct Options; -struct ReadOptions; -struct WriteOptions; -class WriteBatch; - -// Abstract handle to particular state of a DB. -// A Snapshot is an immutable object and can therefore be safely -// accessed from multiple threads without any external synchronization. -class Snapshot { - protected: - virtual ~Snapshot(); -}; - -// A range of keys -struct Range { - Slice start; // Included in the range - Slice limit; // Not included in the range - - Range() { } - Range(const Slice& s, const Slice& l) : start(s), limit(l) { } -}; - -// A DB is a persistent ordered map from keys to values. -// A DB is safe for concurrent access from multiple threads without -// any external synchronization. -class DB { - public: - // Open the database with the specified "name". - // Stores a pointer to a heap-allocated database in *dbptr and returns - // OK on success. - // Stores NULL in *dbptr and returns a non-OK status on error. - // Caller should delete *dbptr when it is no longer needed. - static Status Open(const Options& options, - const std::string& name, - DB** dbptr); - - DB() { } - virtual ~DB(); - - // Set the database entry for "key" to "value". Returns OK on success, - // and a non-OK status on error. - // Note: consider setting options.sync = true. - virtual Status Put(const WriteOptions& options, - const Slice& key, - const Slice& value) = 0; - - // Remove the database entry (if any) for "key". Returns OK on - // success, and a non-OK status on error. It is not an error if "key" - // did not exist in the database. - // Note: consider setting options.sync = true. - virtual Status Delete(const WriteOptions& options, const Slice& key) = 0; - - // Apply the specified updates to the database. - // Returns OK on success, non-OK on failure. - // Note: consider setting options.sync = true. - virtual Status Write(const WriteOptions& options, WriteBatch* updates) = 0; - - // If the database contains an entry for "key" store the - // corresponding value in *value and return OK. - // - // If there is no entry for "key" leave *value unchanged and return - // a status for which Status::IsNotFound() returns true. - // - // May return some other Status on an error. - virtual Status Get(const ReadOptions& options, - const Slice& key, std::string* value) = 0; - - // Return a heap-allocated iterator over the contents of the database. - // The result of NewIterator() is initially invalid (caller must - // call one of the Seek methods on the iterator before using it). - // - // Caller should delete the iterator when it is no longer needed. - // The returned iterator should be deleted before this db is deleted. - virtual Iterator* NewIterator(const ReadOptions& options) = 0; - - // Return a handle to the current DB state. Iterators created with - // this handle will all observe a stable snapshot of the current DB - // state. The caller must call ReleaseSnapshot(result) when the - // snapshot is no longer needed. - virtual const Snapshot* GetSnapshot() = 0; - - // Release a previously acquired snapshot. The caller must not - // use "snapshot" after this call. - virtual void ReleaseSnapshot(const Snapshot* snapshot) = 0; - - // DB implementations can export properties about their state - // via this method. If "property" is a valid property understood by this - // DB implementation, fills "*value" with its current value and returns - // true. Otherwise returns false. - // - // - // Valid property names include: - // - // "leveldb.num-files-at-level" - return the number of files at level , - // where is an ASCII representation of a level number (e.g. "0"). - // "leveldb.stats" - returns a multi-line string that describes statistics - // about the internal operation of the DB. - // "leveldb.sstables" - returns a multi-line string that describes all - // of the sstables that make up the db contents. - virtual bool GetProperty(const Slice& property, std::string* value) = 0; - - // For each i in [0,n-1], store in "sizes[i]", the approximate - // file system space used by keys in "[range[i].start .. range[i].limit)". - // - // Note that the returned sizes measure file system space usage, so - // if the user data compresses by a factor of ten, the returned - // sizes will be one-tenth the size of the corresponding user data size. - // - // The results may not include the sizes of recently written data. - virtual void GetApproximateSizes(const Range* range, int n, - uint64_t* sizes) = 0; - - // Compact the underlying storage for the key range [*begin,*end]. - // In particular, deleted and overwritten versions are discarded, - // and the data is rearranged to reduce the cost of operations - // needed to access the data. This operation should typically only - // be invoked by users who understand the underlying implementation. - // - // begin==NULL is treated as a key before all keys in the database. - // end==NULL is treated as a key after all keys in the database. - // Therefore the following call will compact the entire database: - // db->CompactRange(NULL, NULL); - virtual void CompactRange(const Slice* begin, const Slice* end) = 0; - - private: - // No copying allowed - DB(const DB&); - void operator=(const DB&); -}; - -// Destroy the contents of the specified database. -// Be very careful using this method. -Status DestroyDB(const std::string& name, const Options& options); - -// If a DB cannot be opened, you may attempt to call this method to -// resurrect as much of the contents of the database as possible. -// Some data may be lost, so be careful when calling this function -// on a database that contains important information. -Status RepairDB(const std::string& dbname, const Options& options); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_DB_H_ diff --git a/leveldb-1.18/include/leveldb/dumpfile.h b/leveldb-1.18/include/leveldb/dumpfile.h deleted file mode 100644 index 3f97fda..0000000 --- a/leveldb-1.18/include/leveldb/dumpfile.h +++ /dev/null @@ -1,25 +0,0 @@ -// Copyright (c) 2014 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_INCLUDE_DUMPFILE_H_ -#define STORAGE_LEVELDB_INCLUDE_DUMPFILE_H_ - -#include -#include "leveldb/env.h" -#include "leveldb/status.h" - -namespace leveldb { - -// Dump the contents of the file named by fname in text format to -// *dst. Makes a sequence of dst->Append() calls; each call is passed -// the newline-terminated text corresponding to a single item found -// in the file. -// -// Returns a non-OK result if fname does not name a leveldb storage -// file, or if the file cannot be read. -Status DumpFile(Env* env, const std::string& fname, WritableFile* dst); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_DUMPFILE_H_ diff --git a/leveldb-1.18/include/leveldb/env.h b/leveldb-1.18/include/leveldb/env.h deleted file mode 100644 index f709514..0000000 --- a/leveldb-1.18/include/leveldb/env.h +++ /dev/null @@ -1,333 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// An Env is an interface used by the leveldb implementation to access -// operating system functionality like the filesystem etc. Callers -// may wish to provide a custom Env object when opening a database to -// get fine gain control; e.g., to rate limit file system operations. -// -// All Env implementations are safe for concurrent access from -// multiple threads without any external synchronization. - -#ifndef STORAGE_LEVELDB_INCLUDE_ENV_H_ -#define STORAGE_LEVELDB_INCLUDE_ENV_H_ - -#include -#include -#include -#include -#include "leveldb/status.h" - -namespace leveldb { - -class FileLock; -class Logger; -class RandomAccessFile; -class SequentialFile; -class Slice; -class WritableFile; - -class Env { - public: - Env() { } - virtual ~Env(); - - // Return a default environment suitable for the current operating - // system. Sophisticated users may wish to provide their own Env - // implementation instead of relying on this default environment. - // - // The result of Default() belongs to leveldb and must never be deleted. - static Env* Default(); - - // Create a brand new sequentially-readable file with the specified name. - // On success, stores a pointer to the new file in *result and returns OK. - // On failure stores NULL in *result and returns non-OK. If the file does - // not exist, returns a non-OK status. - // - // The returned file will only be accessed by one thread at a time. - virtual Status NewSequentialFile(const std::string& fname, - SequentialFile** result) = 0; - - // Create a brand new random access read-only file with the - // specified name. On success, stores a pointer to the new file in - // *result and returns OK. On failure stores NULL in *result and - // returns non-OK. If the file does not exist, returns a non-OK - // status. - // - // The returned file may be concurrently accessed by multiple threads. - virtual Status NewRandomAccessFile(const std::string& fname, - RandomAccessFile** result) = 0; - - // Create an object that writes to a new file with the specified - // name. Deletes any existing file with the same name and creates a - // new file. On success, stores a pointer to the new file in - // *result and returns OK. On failure stores NULL in *result and - // returns non-OK. - // - // The returned file will only be accessed by one thread at a time. - virtual Status NewWritableFile(const std::string& fname, - WritableFile** result) = 0; - - // Returns true iff the named file exists. - virtual bool FileExists(const std::string& fname) = 0; - - // Store in *result the names of the children of the specified directory. - // The names are relative to "dir". - // Original contents of *results are dropped. - virtual Status GetChildren(const std::string& dir, - std::vector* result) = 0; - - // Delete the named file. - virtual Status DeleteFile(const std::string& fname) = 0; - - // Create the specified directory. - virtual Status CreateDir(const std::string& dirname) = 0; - - // Delete the specified directory. - virtual Status DeleteDir(const std::string& dirname) = 0; - - // Store the size of fname in *file_size. - virtual Status GetFileSize(const std::string& fname, uint64_t* file_size) = 0; - - // Rename file src to target. - virtual Status RenameFile(const std::string& src, - const std::string& target) = 0; - - // Lock the specified file. Used to prevent concurrent access to - // the same db by multiple processes. On failure, stores NULL in - // *lock and returns non-OK. - // - // On success, stores a pointer to the object that represents the - // acquired lock in *lock and returns OK. The caller should call - // UnlockFile(*lock) to release the lock. If the process exits, - // the lock will be automatically released. - // - // If somebody else already holds the lock, finishes immediately - // with a failure. I.e., this call does not wait for existing locks - // to go away. - // - // May create the named file if it does not already exist. - virtual Status LockFile(const std::string& fname, FileLock** lock) = 0; - - // Release the lock acquired by a previous successful call to LockFile. - // REQUIRES: lock was returned by a successful LockFile() call - // REQUIRES: lock has not already been unlocked. - virtual Status UnlockFile(FileLock* lock) = 0; - - // Arrange to run "(*function)(arg)" once in a background thread. - // - // "function" may run in an unspecified thread. Multiple functions - // added to the same Env may run concurrently in different threads. - // I.e., the caller may not assume that background work items are - // serialized. - virtual void Schedule( - void (*function)(void* arg), - void* arg) = 0; - - // Start a new thread, invoking "function(arg)" within the new thread. - // When "function(arg)" returns, the thread will be destroyed. - virtual void StartThread(void (*function)(void* arg), void* arg) = 0; - - // *path is set to a temporary directory that can be used for testing. It may - // or many not have just been created. The directory may or may not differ - // between runs of the same process, but subsequent calls will return the - // same directory. - virtual Status GetTestDirectory(std::string* path) = 0; - - // Create and return a log file for storing informational messages. - virtual Status NewLogger(const std::string& fname, Logger** result) = 0; - - // Returns the number of micro-seconds since some fixed point in time. Only - // useful for computing deltas of time. - virtual uint64_t NowMicros() = 0; - - // Sleep/delay the thread for the prescribed number of micro-seconds. - virtual void SleepForMicroseconds(int micros) = 0; - - private: - // No copying allowed - Env(const Env&); - void operator=(const Env&); -}; - -// A file abstraction for reading sequentially through a file -class SequentialFile { - public: - SequentialFile() { } - virtual ~SequentialFile(); - - // Read up to "n" bytes from the file. "scratch[0..n-1]" may be - // written by this routine. Sets "*result" to the data that was - // read (including if fewer than "n" bytes were successfully read). - // May set "*result" to point at data in "scratch[0..n-1]", so - // "scratch[0..n-1]" must be live when "*result" is used. - // If an error was encountered, returns a non-OK status. - // - // REQUIRES: External synchronization - virtual Status Read(size_t n, Slice* result, char* scratch) = 0; - - // Skip "n" bytes from the file. This is guaranteed to be no - // slower that reading the same data, but may be faster. - // - // If end of file is reached, skipping will stop at the end of the - // file, and Skip will return OK. - // - // REQUIRES: External synchronization - virtual Status Skip(uint64_t n) = 0; - - private: - // No copying allowed - SequentialFile(const SequentialFile&); - void operator=(const SequentialFile&); -}; - -// A file abstraction for randomly reading the contents of a file. -class RandomAccessFile { - public: - RandomAccessFile() { } - virtual ~RandomAccessFile(); - - // Read up to "n" bytes from the file starting at "offset". - // "scratch[0..n-1]" may be written by this routine. Sets "*result" - // to the data that was read (including if fewer than "n" bytes were - // successfully read). May set "*result" to point at data in - // "scratch[0..n-1]", so "scratch[0..n-1]" must be live when - // "*result" is used. If an error was encountered, returns a non-OK - // status. - // - // Safe for concurrent use by multiple threads. - virtual Status Read(uint64_t offset, size_t n, Slice* result, - char* scratch) const = 0; - - private: - // No copying allowed - RandomAccessFile(const RandomAccessFile&); - void operator=(const RandomAccessFile&); -}; - -// A file abstraction for sequential writing. The implementation -// must provide buffering since callers may append small fragments -// at a time to the file. -class WritableFile { - public: - WritableFile() { } - virtual ~WritableFile(); - - virtual Status Append(const Slice& data) = 0; - virtual Status Close() = 0; - virtual Status Flush() = 0; - virtual Status Sync() = 0; - - private: - // No copying allowed - WritableFile(const WritableFile&); - void operator=(const WritableFile&); -}; - -// An interface for writing log messages. -class Logger { - public: - Logger() { } - virtual ~Logger(); - - // Write an entry to the log file with the specified format. - virtual void Logv(const char* format, va_list ap) = 0; - - private: - // No copying allowed - Logger(const Logger&); - void operator=(const Logger&); -}; - - -// Identifies a locked file. -class FileLock { - public: - FileLock() { } - virtual ~FileLock(); - private: - // No copying allowed - FileLock(const FileLock&); - void operator=(const FileLock&); -}; - -// Log the specified data to *info_log if info_log is non-NULL. -extern void Log(Logger* info_log, const char* format, ...) -# if defined(__GNUC__) || defined(__clang__) - __attribute__((__format__ (__printf__, 2, 3))) -# endif - ; - -// A utility routine: write "data" to the named file. -extern Status WriteStringToFile(Env* env, const Slice& data, - const std::string& fname); - -// A utility routine: read contents of named file into *data -extern Status ReadFileToString(Env* env, const std::string& fname, - std::string* data); - -// An implementation of Env that forwards all calls to another Env. -// May be useful to clients who wish to override just part of the -// functionality of another Env. -class EnvWrapper : public Env { - public: - // Initialize an EnvWrapper that delegates all calls to *t - explicit EnvWrapper(Env* t) : target_(t) { } - virtual ~EnvWrapper(); - - // Return the target to which this Env forwards all calls - Env* target() const { return target_; } - - // The following text is boilerplate that forwards all methods to target() - Status NewSequentialFile(const std::string& f, SequentialFile** r) { - return target_->NewSequentialFile(f, r); - } - Status NewRandomAccessFile(const std::string& f, RandomAccessFile** r) { - return target_->NewRandomAccessFile(f, r); - } - Status NewWritableFile(const std::string& f, WritableFile** r) { - return target_->NewWritableFile(f, r); - } - bool FileExists(const std::string& f) { return target_->FileExists(f); } - Status GetChildren(const std::string& dir, std::vector* r) { - return target_->GetChildren(dir, r); - } - Status DeleteFile(const std::string& f) { return target_->DeleteFile(f); } - Status CreateDir(const std::string& d) { return target_->CreateDir(d); } - Status DeleteDir(const std::string& d) { return target_->DeleteDir(d); } - Status GetFileSize(const std::string& f, uint64_t* s) { - return target_->GetFileSize(f, s); - } - Status RenameFile(const std::string& s, const std::string& t) { - return target_->RenameFile(s, t); - } - Status LockFile(const std::string& f, FileLock** l) { - return target_->LockFile(f, l); - } - Status UnlockFile(FileLock* l) { return target_->UnlockFile(l); } - void Schedule(void (*f)(void*), void* a) { - return target_->Schedule(f, a); - } - void StartThread(void (*f)(void*), void* a) { - return target_->StartThread(f, a); - } - virtual Status GetTestDirectory(std::string* path) { - return target_->GetTestDirectory(path); - } - virtual Status NewLogger(const std::string& fname, Logger** result) { - return target_->NewLogger(fname, result); - } - uint64_t NowMicros() { - return target_->NowMicros(); - } - void SleepForMicroseconds(int micros) { - target_->SleepForMicroseconds(micros); - } - private: - Env* target_; -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_ENV_H_ diff --git a/leveldb-1.18/include/leveldb/filter_policy.h b/leveldb-1.18/include/leveldb/filter_policy.h deleted file mode 100644 index 1fba080..0000000 --- a/leveldb-1.18/include/leveldb/filter_policy.h +++ /dev/null @@ -1,70 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// A database can be configured with a custom FilterPolicy object. -// This object is responsible for creating a small filter from a set -// of keys. These filters are stored in leveldb and are consulted -// automatically by leveldb to decide whether or not to read some -// information from disk. In many cases, a filter can cut down the -// number of disk seeks form a handful to a single disk seek per -// DB::Get() call. -// -// Most people will want to use the builtin bloom filter support (see -// NewBloomFilterPolicy() below). - -#ifndef STORAGE_LEVELDB_INCLUDE_FILTER_POLICY_H_ -#define STORAGE_LEVELDB_INCLUDE_FILTER_POLICY_H_ - -#include - -namespace leveldb { - -class Slice; - -class FilterPolicy { - public: - virtual ~FilterPolicy(); - - // Return the name of this policy. Note that if the filter encoding - // changes in an incompatible way, the name returned by this method - // must be changed. Otherwise, old incompatible filters may be - // passed to methods of this type. - virtual const char* Name() const = 0; - - // keys[0,n-1] contains a list of keys (potentially with duplicates) - // that are ordered according to the user supplied comparator. - // Append a filter that summarizes keys[0,n-1] to *dst. - // - // Warning: do not change the initial contents of *dst. Instead, - // append the newly constructed filter to *dst. - virtual void CreateFilter(const Slice* keys, int n, std::string* dst) - const = 0; - - // "filter" contains the data appended by a preceding call to - // CreateFilter() on this class. This method must return true if - // the key was in the list of keys passed to CreateFilter(). - // This method may return true or false if the key was not on the - // list, but it should aim to return false with a high probability. - virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const = 0; -}; - -// Return a new filter policy that uses a bloom filter with approximately -// the specified number of bits per key. A good value for bits_per_key -// is 10, which yields a filter with ~ 1% false positive rate. -// -// Callers must delete the result after any database that is using the -// result has been closed. -// -// Note: if you are using a custom comparator that ignores some parts -// of the keys being compared, you must not use NewBloomFilterPolicy() -// and must provide your own FilterPolicy that also ignores the -// corresponding parts of the keys. For example, if the comparator -// ignores trailing spaces, it would be incorrect to use a -// FilterPolicy (like NewBloomFilterPolicy) that does not ignore -// trailing spaces in keys. -extern const FilterPolicy* NewBloomFilterPolicy(int bits_per_key); - -} - -#endif // STORAGE_LEVELDB_INCLUDE_FILTER_POLICY_H_ diff --git a/leveldb-1.18/include/leveldb/iterator.h b/leveldb-1.18/include/leveldb/iterator.h deleted file mode 100644 index 76aced0..0000000 --- a/leveldb-1.18/include/leveldb/iterator.h +++ /dev/null @@ -1,100 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// An iterator yields a sequence of key/value pairs from a source. -// The following class defines the interface. Multiple implementations -// are provided by this library. In particular, iterators are provided -// to access the contents of a Table or a DB. -// -// Multiple threads can invoke const methods on an Iterator without -// external synchronization, but if any of the threads may call a -// non-const method, all threads accessing the same Iterator must use -// external synchronization. - -#ifndef STORAGE_LEVELDB_INCLUDE_ITERATOR_H_ -#define STORAGE_LEVELDB_INCLUDE_ITERATOR_H_ - -#include "leveldb/slice.h" -#include "leveldb/status.h" - -namespace leveldb { - -class Iterator { - public: - Iterator(); - virtual ~Iterator(); - - // An iterator is either positioned at a key/value pair, or - // not valid. This method returns true iff the iterator is valid. - virtual bool Valid() const = 0; - - // Position at the first key in the source. The iterator is Valid() - // after this call iff the source is not empty. - virtual void SeekToFirst() = 0; - - // Position at the last key in the source. The iterator is - // Valid() after this call iff the source is not empty. - virtual void SeekToLast() = 0; - - // Position at the first key in the source that at or past target - // The iterator is Valid() after this call iff the source contains - // an entry that comes at or past target. - virtual void Seek(const Slice& target) = 0; - - // Moves to the next entry in the source. After this call, Valid() is - // true iff the iterator was not positioned at the last entry in the source. - // REQUIRES: Valid() - virtual void Next() = 0; - - // Moves to the previous entry in the source. After this call, Valid() is - // true iff the iterator was not positioned at the first entry in source. - // REQUIRES: Valid() - virtual void Prev() = 0; - - // Return the key for the current entry. The underlying storage for - // the returned slice is valid only until the next modification of - // the iterator. - // REQUIRES: Valid() - virtual Slice key() const = 0; - - // Return the value for the current entry. The underlying storage for - // the returned slice is valid only until the next modification of - // the iterator. - // REQUIRES: Valid() - virtual Slice value() const = 0; - - // If an error has occurred, return it. Else return an ok status. - virtual Status status() const = 0; - - // Clients are allowed to register function/arg1/arg2 triples that - // will be invoked when this iterator is destroyed. - // - // Note that unlike all of the preceding methods, this method is - // not abstract and therefore clients should not override it. - typedef void (*CleanupFunction)(void* arg1, void* arg2); - void RegisterCleanup(CleanupFunction function, void* arg1, void* arg2); - - private: - struct Cleanup { - CleanupFunction function; - void* arg1; - void* arg2; - Cleanup* next; - }; - Cleanup cleanup_; - - // No copying allowed - Iterator(const Iterator&); - void operator=(const Iterator&); -}; - -// Return an empty iterator (yields nothing). -extern Iterator* NewEmptyIterator(); - -// Return an empty iterator with the specified status. -extern Iterator* NewErrorIterator(const Status& status); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_ITERATOR_H_ diff --git a/leveldb-1.18/include/leveldb/options.h b/leveldb-1.18/include/leveldb/options.h deleted file mode 100644 index 7c9b973..0000000 --- a/leveldb-1.18/include/leveldb/options.h +++ /dev/null @@ -1,195 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_INCLUDE_OPTIONS_H_ -#define STORAGE_LEVELDB_INCLUDE_OPTIONS_H_ - -#include - -namespace leveldb { - -class Cache; -class Comparator; -class Env; -class FilterPolicy; -class Logger; -class Snapshot; - -// DB contents are stored in a set of blocks, each of which holds a -// sequence of key,value pairs. Each block may be compressed before -// being stored in a file. The following enum describes which -// compression method (if any) is used to compress a block. -enum CompressionType { - // NOTE: do not change the values of existing entries, as these are - // part of the persistent format on disk. - kNoCompression = 0x0, - kSnappyCompression = 0x1 -}; - -// Options to control the behavior of a database (passed to DB::Open) -struct Options { - // ------------------- - // Parameters that affect behavior - - // Comparator used to define the order of keys in the table. - // Default: a comparator that uses lexicographic byte-wise ordering - // - // REQUIRES: The client must ensure that the comparator supplied - // here has the same name and orders keys *exactly* the same as the - // comparator provided to previous open calls on the same DB. - const Comparator* comparator; - - // If true, the database will be created if it is missing. - // Default: false - bool create_if_missing; - - // If true, an error is raised if the database already exists. - // Default: false - bool error_if_exists; - - // If true, the implementation will do aggressive checking of the - // data it is processing and will stop early if it detects any - // errors. This may have unforeseen ramifications: for example, a - // corruption of one DB entry may cause a large number of entries to - // become unreadable or for the entire DB to become unopenable. - // Default: false - bool paranoid_checks; - - // Use the specified object to interact with the environment, - // e.g. to read/write files, schedule background work, etc. - // Default: Env::Default() - Env* env; - - // Any internal progress/error information generated by the db will - // be written to info_log if it is non-NULL, or to a file stored - // in the same directory as the DB contents if info_log is NULL. - // Default: NULL - Logger* info_log; - - // ------------------- - // Parameters that affect performance - - // Amount of data to build up in memory (backed by an unsorted log - // on disk) before converting to a sorted on-disk file. - // - // Larger values increase performance, especially during bulk loads. - // Up to two write buffers may be held in memory at the same time, - // so you may wish to adjust this parameter to control memory usage. - // Also, a larger write buffer will result in a longer recovery time - // the next time the database is opened. - // - // Default: 4MB - size_t write_buffer_size; - - // Number of open files that can be used by the DB. You may need to - // increase this if your database has a large working set (budget - // one open file per 2MB of working set). - // - // Default: 1000 - int max_open_files; - - // Control over blocks (user data is stored in a set of blocks, and - // a block is the unit of reading from disk). - - // If non-NULL, use the specified cache for blocks. - // If NULL, leveldb will automatically create and use an 8MB internal cache. - // Default: NULL - Cache* block_cache; - - // Approximate size of user data packed per block. Note that the - // block size specified here corresponds to uncompressed data. The - // actual size of the unit read from disk may be smaller if - // compression is enabled. This parameter can be changed dynamically. - // - // Default: 4K - size_t block_size; - - // Number of keys between restart points for delta encoding of keys. - // This parameter can be changed dynamically. Most clients should - // leave this parameter alone. - // - // Default: 16 - int block_restart_interval; - - // Compress blocks using the specified compression algorithm. This - // parameter can be changed dynamically. - // - // Default: kSnappyCompression, which gives lightweight but fast - // compression. - // - // Typical speeds of kSnappyCompression on an Intel(R) Core(TM)2 2.4GHz: - // ~200-500MB/s compression - // ~400-800MB/s decompression - // Note that these speeds are significantly faster than most - // persistent storage speeds, and therefore it is typically never - // worth switching to kNoCompression. Even if the input data is - // incompressible, the kSnappyCompression implementation will - // efficiently detect that and will switch to uncompressed mode. - CompressionType compression; - - // If non-NULL, use the specified filter policy to reduce disk reads. - // Many applications will benefit from passing the result of - // NewBloomFilterPolicy() here. - // - // Default: NULL - const FilterPolicy* filter_policy; - - // Create an Options object with default values for all fields. - Options(); -}; - -// Options that control read operations -struct ReadOptions { - // If true, all data read from underlying storage will be - // verified against corresponding checksums. - // Default: false - bool verify_checksums; - - // Should the data read for this iteration be cached in memory? - // Callers may wish to set this field to false for bulk scans. - // Default: true - bool fill_cache; - - // If "snapshot" is non-NULL, read as of the supplied snapshot - // (which must belong to the DB that is being read and which must - // not have been released). If "snapshot" is NULL, use an implicit - // snapshot of the state at the beginning of this read operation. - // Default: NULL - const Snapshot* snapshot; - - ReadOptions() - : verify_checksums(false), - fill_cache(true), - snapshot(NULL) { - } -}; - -// Options that control write operations -struct WriteOptions { - // If true, the write will be flushed from the operating system - // buffer cache (by calling WritableFile::Sync()) before the write - // is considered complete. If this flag is true, writes will be - // slower. - // - // If this flag is false, and the machine crashes, some recent - // writes may be lost. Note that if it is just the process that - // crashes (i.e., the machine does not reboot), no writes will be - // lost even if sync==false. - // - // In other words, a DB write with sync==false has similar - // crash semantics as the "write()" system call. A DB write - // with sync==true has similar crash semantics to a "write()" - // system call followed by "fsync()". - // - // Default: false - bool sync; - - WriteOptions() - : sync(false) { - } -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_OPTIONS_H_ diff --git a/leveldb-1.18/include/leveldb/slice.h b/leveldb-1.18/include/leveldb/slice.h deleted file mode 100644 index bc36798..0000000 --- a/leveldb-1.18/include/leveldb/slice.h +++ /dev/null @@ -1,109 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Slice is a simple structure containing a pointer into some external -// storage and a size. The user of a Slice must ensure that the slice -// is not used after the corresponding external storage has been -// deallocated. -// -// Multiple threads can invoke const methods on a Slice without -// external synchronization, but if any of the threads may call a -// non-const method, all threads accessing the same Slice must use -// external synchronization. - -#ifndef STORAGE_LEVELDB_INCLUDE_SLICE_H_ -#define STORAGE_LEVELDB_INCLUDE_SLICE_H_ - -#include -#include -#include -#include - -namespace leveldb { - -class Slice { - public: - // Create an empty slice. - Slice() : data_(""), size_(0) { } - - // Create a slice that refers to d[0,n-1]. - Slice(const char* d, size_t n) : data_(d), size_(n) { } - - // Create a slice that refers to the contents of "s" - Slice(const std::string& s) : data_(s.data()), size_(s.size()) { } - - // Create a slice that refers to s[0,strlen(s)-1] - Slice(const char* s) : data_(s), size_(strlen(s)) { } - - // Return a pointer to the beginning of the referenced data - const char* data() const { return data_; } - - // Return the length (in bytes) of the referenced data - size_t size() const { return size_; } - - // Return true iff the length of the referenced data is zero - bool empty() const { return size_ == 0; } - - // Return the ith byte in the referenced data. - // REQUIRES: n < size() - char operator[](size_t n) const { - assert(n < size()); - return data_[n]; - } - - // Change this slice to refer to an empty array - void clear() { data_ = ""; size_ = 0; } - - // Drop the first "n" bytes from this slice. - void remove_prefix(size_t n) { - assert(n <= size()); - data_ += n; - size_ -= n; - } - - // Return a string that contains the copy of the referenced data. - std::string ToString() const { return std::string(data_, size_); } - - // Three-way comparison. Returns value: - // < 0 iff "*this" < "b", - // == 0 iff "*this" == "b", - // > 0 iff "*this" > "b" - int compare(const Slice& b) const; - - // Return true iff "x" is a prefix of "*this" - bool starts_with(const Slice& x) const { - return ((size_ >= x.size_) && - (memcmp(data_, x.data_, x.size_) == 0)); - } - - private: - const char* data_; - size_t size_; - - // Intentionally copyable -}; - -inline bool operator==(const Slice& x, const Slice& y) { - return ((x.size() == y.size()) && - (memcmp(x.data(), y.data(), x.size()) == 0)); -} - -inline bool operator!=(const Slice& x, const Slice& y) { - return !(x == y); -} - -inline int Slice::compare(const Slice& b) const { - const size_t min_len = (size_ < b.size_) ? size_ : b.size_; - int r = memcmp(data_, b.data_, min_len); - if (r == 0) { - if (size_ < b.size_) r = -1; - else if (size_ > b.size_) r = +1; - } - return r; -} - -} // namespace leveldb - - -#endif // STORAGE_LEVELDB_INCLUDE_SLICE_H_ diff --git a/leveldb-1.18/include/leveldb/status.h b/leveldb-1.18/include/leveldb/status.h deleted file mode 100644 index 11dbd4b..0000000 --- a/leveldb-1.18/include/leveldb/status.h +++ /dev/null @@ -1,106 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// A Status encapsulates the result of an operation. It may indicate success, -// or it may indicate an error with an associated error message. -// -// Multiple threads can invoke const methods on a Status without -// external synchronization, but if any of the threads may call a -// non-const method, all threads accessing the same Status must use -// external synchronization. - -#ifndef STORAGE_LEVELDB_INCLUDE_STATUS_H_ -#define STORAGE_LEVELDB_INCLUDE_STATUS_H_ - -#include -#include "leveldb/slice.h" - -namespace leveldb { - -class Status { - public: - // Create a success status. - Status() : state_(NULL) { } - ~Status() { delete[] state_; } - - // Copy the specified status. - Status(const Status& s); - void operator=(const Status& s); - - // Return a success status. - static Status OK() { return Status(); } - - // Return error status of an appropriate type. - static Status NotFound(const Slice& msg, const Slice& msg2 = Slice()) { - return Status(kNotFound, msg, msg2); - } - static Status Corruption(const Slice& msg, const Slice& msg2 = Slice()) { - return Status(kCorruption, msg, msg2); - } - static Status NotSupported(const Slice& msg, const Slice& msg2 = Slice()) { - return Status(kNotSupported, msg, msg2); - } - static Status InvalidArgument(const Slice& msg, const Slice& msg2 = Slice()) { - return Status(kInvalidArgument, msg, msg2); - } - static Status IOError(const Slice& msg, const Slice& msg2 = Slice()) { - return Status(kIOError, msg, msg2); - } - - // Returns true iff the status indicates success. - bool ok() const { return (state_ == NULL); } - - // Returns true iff the status indicates a NotFound error. - bool IsNotFound() const { return code() == kNotFound; } - - // Returns true iff the status indicates a Corruption error. - bool IsCorruption() const { return code() == kCorruption; } - - // Returns true iff the status indicates an IOError. - bool IsIOError() const { return code() == kIOError; } - - // Return a string representation of this status suitable for printing. - // Returns the string "OK" for success. - std::string ToString() const; - - private: - // OK status has a NULL state_. Otherwise, state_ is a new[] array - // of the following form: - // state_[0..3] == length of message - // state_[4] == code - // state_[5..] == message - const char* state_; - - enum Code { - kOk = 0, - kNotFound = 1, - kCorruption = 2, - kNotSupported = 3, - kInvalidArgument = 4, - kIOError = 5 - }; - - Code code() const { - return (state_ == NULL) ? kOk : static_cast(state_[4]); - } - - Status(Code code, const Slice& msg, const Slice& msg2); - static const char* CopyState(const char* s); -}; - -inline Status::Status(const Status& s) { - state_ = (s.state_ == NULL) ? NULL : CopyState(s.state_); -} -inline void Status::operator=(const Status& s) { - // The following condition catches both aliasing (when this == &s), - // and the common case where both s and *this are ok. - if (state_ != s.state_) { - delete[] state_; - state_ = (s.state_ == NULL) ? NULL : CopyState(s.state_); - } -} - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_STATUS_H_ diff --git a/leveldb-1.18/include/leveldb/table.h b/leveldb-1.18/include/leveldb/table.h deleted file mode 100644 index a9746c3..0000000 --- a/leveldb-1.18/include/leveldb/table.h +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_INCLUDE_TABLE_H_ -#define STORAGE_LEVELDB_INCLUDE_TABLE_H_ - -#include -#include "leveldb/iterator.h" - -namespace leveldb { - -class Block; -class BlockHandle; -class Footer; -struct Options; -class RandomAccessFile; -struct ReadOptions; -class TableCache; - -// A Table is a sorted map from strings to strings. Tables are -// immutable and persistent. A Table may be safely accessed from -// multiple threads without external synchronization. -class Table { - public: - // Attempt to open the table that is stored in bytes [0..file_size) - // of "file", and read the metadata entries necessary to allow - // retrieving data from the table. - // - // If successful, returns ok and sets "*table" to the newly opened - // table. The client should delete "*table" when no longer needed. - // If there was an error while initializing the table, sets "*table" - // to NULL and returns a non-ok status. Does not take ownership of - // "*source", but the client must ensure that "source" remains live - // for the duration of the returned table's lifetime. - // - // *file must remain live while this Table is in use. - static Status Open(const Options& options, - RandomAccessFile* file, - uint64_t file_size, - Table** table); - - ~Table(); - - // Returns a new iterator over the table contents. - // The result of NewIterator() is initially invalid (caller must - // call one of the Seek methods on the iterator before using it). - Iterator* NewIterator(const ReadOptions&) const; - - // Given a key, return an approximate byte offset in the file where - // the data for that key begins (or would begin if the key were - // present in the file). The returned value is in terms of file - // bytes, and so includes effects like compression of the underlying data. - // E.g., the approximate offset of the last key in the table will - // be close to the file length. - uint64_t ApproximateOffsetOf(const Slice& key) const; - - private: - struct Rep; - Rep* rep_; - - explicit Table(Rep* rep) { rep_ = rep; } - static Iterator* BlockReader(void*, const ReadOptions&, const Slice&); - - // Calls (*handle_result)(arg, ...) with the entry found after a call - // to Seek(key). May not make such a call if filter policy says - // that key is not present. - friend class TableCache; - Status InternalGet( - const ReadOptions&, const Slice& key, - void* arg, - void (*handle_result)(void* arg, const Slice& k, const Slice& v)); - - - void ReadMeta(const Footer& footer); - void ReadFilter(const Slice& filter_handle_value); - - // No copying allowed - Table(const Table&); - void operator=(const Table&); -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_TABLE_H_ diff --git a/leveldb-1.18/include/leveldb/table_builder.h b/leveldb-1.18/include/leveldb/table_builder.h deleted file mode 100644 index 5fd1dc7..0000000 --- a/leveldb-1.18/include/leveldb/table_builder.h +++ /dev/null @@ -1,92 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// TableBuilder provides the interface used to build a Table -// (an immutable and sorted map from keys to values). -// -// Multiple threads can invoke const methods on a TableBuilder without -// external synchronization, but if any of the threads may call a -// non-const method, all threads accessing the same TableBuilder must use -// external synchronization. - -#ifndef STORAGE_LEVELDB_INCLUDE_TABLE_BUILDER_H_ -#define STORAGE_LEVELDB_INCLUDE_TABLE_BUILDER_H_ - -#include -#include "leveldb/options.h" -#include "leveldb/status.h" - -namespace leveldb { - -class BlockBuilder; -class BlockHandle; -class WritableFile; - -class TableBuilder { - public: - // Create a builder that will store the contents of the table it is - // building in *file. Does not close the file. It is up to the - // caller to close the file after calling Finish(). - TableBuilder(const Options& options, WritableFile* file); - - // REQUIRES: Either Finish() or Abandon() has been called. - ~TableBuilder(); - - // Change the options used by this builder. Note: only some of the - // option fields can be changed after construction. If a field is - // not allowed to change dynamically and its value in the structure - // passed to the constructor is different from its value in the - // structure passed to this method, this method will return an error - // without changing any fields. - Status ChangeOptions(const Options& options); - - // Add key,value to the table being constructed. - // REQUIRES: key is after any previously added key according to comparator. - // REQUIRES: Finish(), Abandon() have not been called - void Add(const Slice& key, const Slice& value); - - // Advanced operation: flush any buffered key/value pairs to file. - // Can be used to ensure that two adjacent entries never live in - // the same data block. Most clients should not need to use this method. - // REQUIRES: Finish(), Abandon() have not been called - void Flush(); - - // Return non-ok iff some error has been detected. - Status status() const; - - // Finish building the table. Stops using the file passed to the - // constructor after this function returns. - // REQUIRES: Finish(), Abandon() have not been called - Status Finish(); - - // Indicate that the contents of this builder should be abandoned. Stops - // using the file passed to the constructor after this function returns. - // If the caller is not going to call Finish(), it must call Abandon() - // before destroying this builder. - // REQUIRES: Finish(), Abandon() have not been called - void Abandon(); - - // Number of calls to Add() so far. - uint64_t NumEntries() const; - - // Size of the file generated so far. If invoked after a successful - // Finish() call, returns the size of the final generated file. - uint64_t FileSize() const; - - private: - bool ok() const { return status().ok(); } - void WriteBlock(BlockBuilder* block, BlockHandle* handle); - void WriteRawBlock(const Slice& data, CompressionType, BlockHandle* handle); - - struct Rep; - Rep* rep_; - - // No copying allowed - TableBuilder(const TableBuilder&); - void operator=(const TableBuilder&); -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_TABLE_BUILDER_H_ diff --git a/leveldb-1.18/include/leveldb/write_batch.h b/leveldb-1.18/include/leveldb/write_batch.h deleted file mode 100644 index ee9aab6..0000000 --- a/leveldb-1.18/include/leveldb/write_batch.h +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// WriteBatch holds a collection of updates to apply atomically to a DB. -// -// The updates are applied in the order in which they are added -// to the WriteBatch. For example, the value of "key" will be "v3" -// after the following batch is written: -// -// batch.Put("key", "v1"); -// batch.Delete("key"); -// batch.Put("key", "v2"); -// batch.Put("key", "v3"); -// -// Multiple threads can invoke const methods on a WriteBatch without -// external synchronization, but if any of the threads may call a -// non-const method, all threads accessing the same WriteBatch must use -// external synchronization. - -#ifndef STORAGE_LEVELDB_INCLUDE_WRITE_BATCH_H_ -#define STORAGE_LEVELDB_INCLUDE_WRITE_BATCH_H_ - -#include -#include "leveldb/status.h" - -namespace leveldb { - -class Slice; - -class WriteBatch { - public: - WriteBatch(); - ~WriteBatch(); - - // Store the mapping "key->value" in the database. - void Put(const Slice& key, const Slice& value); - - // If the database contains a mapping for "key", erase it. Else do nothing. - void Delete(const Slice& key); - - // Clear all updates buffered in this batch. - void Clear(); - - // Support for iterating over the contents of a batch. - class Handler { - public: - virtual ~Handler(); - virtual void Put(const Slice& key, const Slice& value) = 0; - virtual void Delete(const Slice& key) = 0; - }; - Status Iterate(Handler* handler) const; - - private: - friend class WriteBatchInternal; - - std::string rep_; // See comment in write_batch.cc for the format of rep_ - - // Intentionally copyable -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_INCLUDE_WRITE_BATCH_H_ diff --git a/leveldb-1.18/issues/issue178_test.cc b/leveldb-1.18/issues/issue178_test.cc deleted file mode 100644 index 1b1cf8b..0000000 --- a/leveldb-1.18/issues/issue178_test.cc +++ /dev/null @@ -1,92 +0,0 @@ -// Copyright (c) 2013 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -// Test for issue 178: a manual compaction causes deleted data to reappear. -#include -#include -#include - -#include "leveldb/db.h" -#include "leveldb/write_batch.h" -#include "util/testharness.h" - -namespace { - -const int kNumKeys = 1100000; - -std::string Key1(int i) { - char buf[100]; - snprintf(buf, sizeof(buf), "my_key_%d", i); - return buf; -} - -std::string Key2(int i) { - return Key1(i) + "_xxx"; -} - -class Issue178 { }; - -TEST(Issue178, Test) { - // Get rid of any state from an old run. - std::string dbpath = leveldb::test::TmpDir() + "/leveldb_cbug_test"; - DestroyDB(dbpath, leveldb::Options()); - - // Open database. Disable compression since it affects the creation - // of layers and the code below is trying to test against a very - // specific scenario. - leveldb::DB* db; - leveldb::Options db_options; - db_options.create_if_missing = true; - db_options.compression = leveldb::kNoCompression; - ASSERT_OK(leveldb::DB::Open(db_options, dbpath, &db)); - - // create first key range - leveldb::WriteBatch batch; - for (size_t i = 0; i < kNumKeys; i++) { - batch.Put(Key1(i), "value for range 1 key"); - } - ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch)); - - // create second key range - batch.Clear(); - for (size_t i = 0; i < kNumKeys; i++) { - batch.Put(Key2(i), "value for range 2 key"); - } - ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch)); - - // delete second key range - batch.Clear(); - for (size_t i = 0; i < kNumKeys; i++) { - batch.Delete(Key2(i)); - } - ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch)); - - // compact database - std::string start_key = Key1(0); - std::string end_key = Key1(kNumKeys - 1); - leveldb::Slice least(start_key.data(), start_key.size()); - leveldb::Slice greatest(end_key.data(), end_key.size()); - - // commenting out the line below causes the example to work correctly - db->CompactRange(&least, &greatest); - - // count the keys - leveldb::Iterator* iter = db->NewIterator(leveldb::ReadOptions()); - size_t num_keys = 0; - for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { - num_keys++; - } - delete iter; - ASSERT_EQ(kNumKeys, num_keys) << "Bad number of keys"; - - // close database - delete db; - DestroyDB(dbpath, leveldb::Options()); -} - -} // anonymous namespace - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/issues/issue200_test.cc b/leveldb-1.18/issues/issue200_test.cc deleted file mode 100644 index 1cec79f..0000000 --- a/leveldb-1.18/issues/issue200_test.cc +++ /dev/null @@ -1,59 +0,0 @@ -// Copyright (c) 2013 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -// Test for issue 200: when iterator switches direction from backward -// to forward, the current key can be yielded unexpectedly if a new -// mutation has been added just before the current key. - -#include "leveldb/db.h" -#include "util/testharness.h" - -namespace leveldb { - -class Issue200 { }; - -TEST(Issue200, Test) { - // Get rid of any state from an old run. - std::string dbpath = test::TmpDir() + "/leveldb_issue200_test"; - DestroyDB(dbpath, Options()); - - DB *db; - Options options; - options.create_if_missing = true; - ASSERT_OK(DB::Open(options, dbpath, &db)); - - WriteOptions write_options; - ASSERT_OK(db->Put(write_options, "1", "b")); - ASSERT_OK(db->Put(write_options, "2", "c")); - ASSERT_OK(db->Put(write_options, "3", "d")); - ASSERT_OK(db->Put(write_options, "4", "e")); - ASSERT_OK(db->Put(write_options, "5", "f")); - - ReadOptions read_options; - Iterator *iter = db->NewIterator(read_options); - - // Add an element that should not be reflected in the iterator. - ASSERT_OK(db->Put(write_options, "25", "cd")); - - iter->Seek("5"); - ASSERT_EQ(iter->key().ToString(), "5"); - iter->Prev(); - ASSERT_EQ(iter->key().ToString(), "4"); - iter->Prev(); - ASSERT_EQ(iter->key().ToString(), "3"); - iter->Next(); - ASSERT_EQ(iter->key().ToString(), "4"); - iter->Next(); - ASSERT_EQ(iter->key().ToString(), "5"); - - delete iter; - delete db; - DestroyDB(dbpath, options); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/port/README b/leveldb-1.18/port/README deleted file mode 100644 index 422563e..0000000 --- a/leveldb-1.18/port/README +++ /dev/null @@ -1,10 +0,0 @@ -This directory contains interfaces and implementations that isolate the -rest of the package from platform details. - -Code in the rest of the package includes "port.h" from this directory. -"port.h" in turn includes a platform specific "port_.h" file -that provides the platform specific implementation. - -See port_posix.h for an example of what must be provided in a platform -specific header file. - diff --git a/leveldb-1.18/port/atomic_pointer.h b/leveldb-1.18/port/atomic_pointer.h deleted file mode 100644 index df6b215..0000000 --- a/leveldb-1.18/port/atomic_pointer.h +++ /dev/null @@ -1,243 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -// AtomicPointer provides storage for a lock-free pointer. -// Platform-dependent implementation of AtomicPointer: -// - If the platform provides a cheap barrier, we use it with raw pointers -// - If is present (on newer versions of gcc, it is), we use -// a -based AtomicPointer. However we prefer the memory -// barrier based version, because at least on a gcc 4.4 32-bit build -// on linux, we have encountered a buggy implementation. -// Also, some implementations are much slower than a memory-barrier -// based implementation (~16ns for based acquire-load vs. ~1ns for -// a barrier based acquire-load). -// This code is based on atomicops-internals-* in Google's perftools: -// http://code.google.com/p/google-perftools/source/browse/#svn%2Ftrunk%2Fsrc%2Fbase - -#ifndef PORT_ATOMIC_POINTER_H_ -#define PORT_ATOMIC_POINTER_H_ - -#include -#ifdef LEVELDB_ATOMIC_PRESENT -#include -#endif -#ifdef OS_WIN -#include -#endif -#ifdef OS_MACOSX -#include -#endif - -#if defined(_M_X64) || defined(__x86_64__) -#define ARCH_CPU_X86_FAMILY 1 -#elif defined(_M_IX86) || defined(__i386__) || defined(__i386) -#define ARCH_CPU_X86_FAMILY 1 -#elif defined(__ARMEL__) -#define ARCH_CPU_ARM_FAMILY 1 -#elif defined(__aarch64__) -#define ARCH_CPU_ARM64_FAMILY 1 -#elif defined(__ppc__) || defined(__powerpc__) || defined(__powerpc64__) -#define ARCH_CPU_PPC_FAMILY 1 -#elif defined(__mips__) -#define ARCH_CPU_MIPS_FAMILY 1 -#endif - -namespace leveldb { -namespace port { - -// Define MemoryBarrier() if available -// Windows on x86 -#if defined(OS_WIN) && defined(COMPILER_MSVC) && defined(ARCH_CPU_X86_FAMILY) -// windows.h already provides a MemoryBarrier(void) macro -// http://msdn.microsoft.com/en-us/library/ms684208(v=vs.85).aspx -#define LEVELDB_HAVE_MEMORY_BARRIER - -// Mac OS -#elif defined(OS_MACOSX) -inline void MemoryBarrier() { - OSMemoryBarrier(); -} -#define LEVELDB_HAVE_MEMORY_BARRIER - -// Gcc on x86 -#elif defined(ARCH_CPU_X86_FAMILY) && defined(__GNUC__) -inline void MemoryBarrier() { - // See http://gcc.gnu.org/ml/gcc/2003-04/msg01180.html for a discussion on - // this idiom. Also see http://en.wikipedia.org/wiki/Memory_ordering. - __asm__ __volatile__("" : : : "memory"); -} -#define LEVELDB_HAVE_MEMORY_BARRIER - -// Sun Studio -#elif defined(ARCH_CPU_X86_FAMILY) && defined(__SUNPRO_CC) -inline void MemoryBarrier() { - // See http://gcc.gnu.org/ml/gcc/2003-04/msg01180.html for a discussion on - // this idiom. Also see http://en.wikipedia.org/wiki/Memory_ordering. - asm volatile("" : : : "memory"); -} -#define LEVELDB_HAVE_MEMORY_BARRIER - -// ARM Linux -#elif defined(ARCH_CPU_ARM_FAMILY) && defined(__linux__) -typedef void (*LinuxKernelMemoryBarrierFunc)(void); -// The Linux ARM kernel provides a highly optimized device-specific memory -// barrier function at a fixed memory address that is mapped in every -// user-level process. -// -// This beats using CPU-specific instructions which are, on single-core -// devices, un-necessary and very costly (e.g. ARMv7-A "dmb" takes more -// than 180ns on a Cortex-A8 like the one on a Nexus One). Benchmarking -// shows that the extra function call cost is completely negligible on -// multi-core devices. -// -inline void MemoryBarrier() { - (*(LinuxKernelMemoryBarrierFunc)0xffff0fa0)(); -} -#define LEVELDB_HAVE_MEMORY_BARRIER - -// ARM64 -#elif defined(ARCH_CPU_ARM64_FAMILY) -inline void MemoryBarrier() { - asm volatile("dmb sy" : : : "memory"); -} -#define LEVELDB_HAVE_MEMORY_BARRIER - -// MIPS -#elif defined(ARCH_CPU_MIPS_FAMILY) && defined(__GNUC__) -inline void MemoryBarrier() { - __asm__ __volatile__("sync" : : : "memory"); -} -#define LEVELDB_HAVE_MEMORY_BARRIER - -// PPC -#elif defined(ARCH_CPU_PPC_FAMILY) && defined(__GNUC__) -inline void MemoryBarrier() { - // TODO for some powerpc expert: is there a cheaper suitable variant? - // Perhaps by having separate barriers for acquire and release ops. - asm volatile("sync" : : : "memory"); -} -#define LEVELDB_HAVE_MEMORY_BARRIER - -#endif - -// AtomicPointer built using platform-specific MemoryBarrier() -#if defined(LEVELDB_HAVE_MEMORY_BARRIER) -class AtomicPointer { - private: - void* rep_; - public: - AtomicPointer() { } - explicit AtomicPointer(void* p) : rep_(p) {} - inline void* NoBarrier_Load() const { return rep_; } - inline void NoBarrier_Store(void* v) { rep_ = v; } - inline void* Acquire_Load() const { - void* result = rep_; - MemoryBarrier(); - return result; - } - inline void Release_Store(void* v) { - MemoryBarrier(); - rep_ = v; - } -}; - -// AtomicPointer based on -#elif defined(LEVELDB_ATOMIC_PRESENT) -class AtomicPointer { - private: - std::atomic rep_; - public: - AtomicPointer() { } - explicit AtomicPointer(void* v) : rep_(v) { } - inline void* Acquire_Load() const { - return rep_.load(std::memory_order_acquire); - } - inline void Release_Store(void* v) { - rep_.store(v, std::memory_order_release); - } - inline void* NoBarrier_Load() const { - return rep_.load(std::memory_order_relaxed); - } - inline void NoBarrier_Store(void* v) { - rep_.store(v, std::memory_order_relaxed); - } -}; - -// Atomic pointer based on sparc memory barriers -#elif defined(__sparcv9) && defined(__GNUC__) -class AtomicPointer { - private: - void* rep_; - public: - AtomicPointer() { } - explicit AtomicPointer(void* v) : rep_(v) { } - inline void* Acquire_Load() const { - void* val; - __asm__ __volatile__ ( - "ldx [%[rep_]], %[val] \n\t" - "membar #LoadLoad|#LoadStore \n\t" - : [val] "=r" (val) - : [rep_] "r" (&rep_) - : "memory"); - return val; - } - inline void Release_Store(void* v) { - __asm__ __volatile__ ( - "membar #LoadStore|#StoreStore \n\t" - "stx %[v], [%[rep_]] \n\t" - : - : [rep_] "r" (&rep_), [v] "r" (v) - : "memory"); - } - inline void* NoBarrier_Load() const { return rep_; } - inline void NoBarrier_Store(void* v) { rep_ = v; } -}; - -// Atomic pointer based on ia64 acq/rel -#elif defined(__ia64) && defined(__GNUC__) -class AtomicPointer { - private: - void* rep_; - public: - AtomicPointer() { } - explicit AtomicPointer(void* v) : rep_(v) { } - inline void* Acquire_Load() const { - void* val ; - __asm__ __volatile__ ( - "ld8.acq %[val] = [%[rep_]] \n\t" - : [val] "=r" (val) - : [rep_] "r" (&rep_) - : "memory" - ); - return val; - } - inline void Release_Store(void* v) { - __asm__ __volatile__ ( - "st8.rel [%[rep_]] = %[v] \n\t" - : - : [rep_] "r" (&rep_), [v] "r" (v) - : "memory" - ); - } - inline void* NoBarrier_Load() const { return rep_; } - inline void NoBarrier_Store(void* v) { rep_ = v; } -}; - -// We have neither MemoryBarrier(), nor -#else -#error Please implement AtomicPointer for this platform. - -#endif - -#undef LEVELDB_HAVE_MEMORY_BARRIER -#undef ARCH_CPU_X86_FAMILY -#undef ARCH_CPU_ARM_FAMILY -#undef ARCH_CPU_ARM64_FAMILY -#undef ARCH_CPU_PPC_FAMILY -#undef ARCH_CPU_MIPS_FAMILY - -} // namespace port -} // namespace leveldb - -#endif // PORT_ATOMIC_POINTER_H_ diff --git a/leveldb-1.18/port/port.h b/leveldb-1.18/port/port.h deleted file mode 100644 index e667db4..0000000 --- a/leveldb-1.18/port/port.h +++ /dev/null @@ -1,19 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_PORT_PORT_H_ -#define STORAGE_LEVELDB_PORT_PORT_H_ - -#include - -// Include the appropriate platform specific file below. If you are -// porting to a new platform, see "port_example.h" for documentation -// of what the new port_.h file must provide. -#if defined(LEVELDB_PLATFORM_POSIX) -# include "port/port_posix.h" -#elif defined(LEVELDB_PLATFORM_CHROMIUM) -# include "port/port_chromium.h" -#endif - -#endif // STORAGE_LEVELDB_PORT_PORT_H_ diff --git a/leveldb-1.18/port/port_example.h b/leveldb-1.18/port/port_example.h deleted file mode 100644 index ab9e489..0000000 --- a/leveldb-1.18/port/port_example.h +++ /dev/null @@ -1,135 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// This file contains the specification, but not the implementations, -// of the types/operations/etc. that should be defined by a platform -// specific port_.h file. Use this file as a reference for -// how to port this package to a new platform. - -#ifndef STORAGE_LEVELDB_PORT_PORT_EXAMPLE_H_ -#define STORAGE_LEVELDB_PORT_PORT_EXAMPLE_H_ - -namespace leveldb { -namespace port { - -// TODO(jorlow): Many of these belong more in the environment class rather than -// here. We should try moving them and see if it affects perf. - -// The following boolean constant must be true on a little-endian machine -// and false otherwise. -static const bool kLittleEndian = true /* or some other expression */; - -// ------------------ Threading ------------------- - -// A Mutex represents an exclusive lock. -class Mutex { - public: - Mutex(); - ~Mutex(); - - // Lock the mutex. Waits until other lockers have exited. - // Will deadlock if the mutex is already locked by this thread. - void Lock(); - - // Unlock the mutex. - // REQUIRES: This mutex was locked by this thread. - void Unlock(); - - // Optionally crash if this thread does not hold this mutex. - // The implementation must be fast, especially if NDEBUG is - // defined. The implementation is allowed to skip all checks. - void AssertHeld(); -}; - -class CondVar { - public: - explicit CondVar(Mutex* mu); - ~CondVar(); - - // Atomically release *mu and block on this condition variable until - // either a call to SignalAll(), or a call to Signal() that picks - // this thread to wakeup. - // REQUIRES: this thread holds *mu - void Wait(); - - // If there are some threads waiting, wake up at least one of them. - void Signal(); - - // Wake up all waiting threads. - void SignallAll(); -}; - -// Thread-safe initialization. -// Used as follows: -// static port::OnceType init_control = LEVELDB_ONCE_INIT; -// static void Initializer() { ... do something ...; } -// ... -// port::InitOnce(&init_control, &Initializer); -typedef intptr_t OnceType; -#define LEVELDB_ONCE_INIT 0 -extern void InitOnce(port::OnceType*, void (*initializer)()); - -// A type that holds a pointer that can be read or written atomically -// (i.e., without word-tearing.) -class AtomicPointer { - private: - intptr_t rep_; - public: - // Initialize to arbitrary value - AtomicPointer(); - - // Initialize to hold v - explicit AtomicPointer(void* v) : rep_(v) { } - - // Read and return the stored pointer with the guarantee that no - // later memory access (read or write) by this thread can be - // reordered ahead of this read. - void* Acquire_Load() const; - - // Set v as the stored pointer with the guarantee that no earlier - // memory access (read or write) by this thread can be reordered - // after this store. - void Release_Store(void* v); - - // Read the stored pointer with no ordering guarantees. - void* NoBarrier_Load() const; - - // Set va as the stored pointer with no ordering guarantees. - void NoBarrier_Store(void* v); -}; - -// ------------------ Compression ------------------- - -// Store the snappy compression of "input[0,input_length-1]" in *output. -// Returns false if snappy is not supported by this port. -extern bool Snappy_Compress(const char* input, size_t input_length, - std::string* output); - -// If input[0,input_length-1] looks like a valid snappy compressed -// buffer, store the size of the uncompressed data in *result and -// return true. Else return false. -extern bool Snappy_GetUncompressedLength(const char* input, size_t length, - size_t* result); - -// Attempt to snappy uncompress input[0,input_length-1] into *output. -// Returns true if successful, false if the input is invalid lightweight -// compressed data. -// -// REQUIRES: at least the first "n" bytes of output[] must be writable -// where "n" is the result of a successful call to -// Snappy_GetUncompressedLength. -extern bool Snappy_Uncompress(const char* input_data, size_t input_length, - char* output); - -// ------------------ Miscellaneous ------------------- - -// If heap profiling is not supported, returns false. -// Else repeatedly calls (*func)(arg, data, n) and then returns true. -// The concatenation of all "data[0,n-1]" fragments is the heap profile. -extern bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg); - -} // namespace port -} // namespace leveldb - -#endif // STORAGE_LEVELDB_PORT_PORT_EXAMPLE_H_ diff --git a/leveldb-1.18/port/port_posix.cc b/leveldb-1.18/port/port_posix.cc deleted file mode 100644 index 5ba127a..0000000 --- a/leveldb-1.18/port/port_posix.cc +++ /dev/null @@ -1,54 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "port/port_posix.h" - -#include -#include -#include -#include "util/logging.h" - -namespace leveldb { -namespace port { - -static void PthreadCall(const char* label, int result) { - if (result != 0) { - fprintf(stderr, "pthread %s: %s\n", label, strerror(result)); - abort(); - } -} - -Mutex::Mutex() { PthreadCall("init mutex", pthread_mutex_init(&mu_, NULL)); } - -Mutex::~Mutex() { PthreadCall("destroy mutex", pthread_mutex_destroy(&mu_)); } - -void Mutex::Lock() { PthreadCall("lock", pthread_mutex_lock(&mu_)); } - -void Mutex::Unlock() { PthreadCall("unlock", pthread_mutex_unlock(&mu_)); } - -CondVar::CondVar(Mutex* mu) - : mu_(mu) { - PthreadCall("init cv", pthread_cond_init(&cv_, NULL)); -} - -CondVar::~CondVar() { PthreadCall("destroy cv", pthread_cond_destroy(&cv_)); } - -void CondVar::Wait() { - PthreadCall("wait", pthread_cond_wait(&cv_, &mu_->mu_)); -} - -void CondVar::Signal() { - PthreadCall("signal", pthread_cond_signal(&cv_)); -} - -void CondVar::SignalAll() { - PthreadCall("broadcast", pthread_cond_broadcast(&cv_)); -} - -void InitOnce(OnceType* once, void (*initializer)()) { - PthreadCall("once", pthread_once(once, initializer)); -} - -} // namespace port -} // namespace leveldb diff --git a/leveldb-1.18/port/port_posix.h b/leveldb-1.18/port/port_posix.h deleted file mode 100644 index 89fc222..0000000 --- a/leveldb-1.18/port/port_posix.h +++ /dev/null @@ -1,154 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// See port_example.h for documentation for the following types/functions. - -#ifndef STORAGE_LEVELDB_PORT_PORT_POSIX_H_ -#define STORAGE_LEVELDB_PORT_PORT_POSIX_H_ - -#undef PLATFORM_IS_LITTLE_ENDIAN -#if defined(OS_MACOSX) - #include - #if defined(__DARWIN_LITTLE_ENDIAN) && defined(__DARWIN_BYTE_ORDER) - #define PLATFORM_IS_LITTLE_ENDIAN \ - (__DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN) - #endif -#elif defined(OS_SOLARIS) - #include - #ifdef _LITTLE_ENDIAN - #define PLATFORM_IS_LITTLE_ENDIAN true - #else - #define PLATFORM_IS_LITTLE_ENDIAN false - #endif -#elif defined(OS_FREEBSD) || defined(OS_OPENBSD) ||\ - defined(OS_NETBSD) || defined(OS_DRAGONFLYBSD) - #include - #include - #define PLATFORM_IS_LITTLE_ENDIAN (_BYTE_ORDER == _LITTLE_ENDIAN) -#elif defined(OS_HPUX) - #define PLATFORM_IS_LITTLE_ENDIAN false -#elif defined(OS_ANDROID) - // Due to a bug in the NDK x86 definition, - // _BYTE_ORDER must be used instead of __BYTE_ORDER on Android. - // See http://code.google.com/p/android/issues/detail?id=39824 - #include - #define PLATFORM_IS_LITTLE_ENDIAN (_BYTE_ORDER == _LITTLE_ENDIAN) -#else - #include -#endif - -#include -#ifdef SNAPPY -#include -#endif -#include -#include -#include "port/atomic_pointer.h" - -#ifndef PLATFORM_IS_LITTLE_ENDIAN -#define PLATFORM_IS_LITTLE_ENDIAN (__BYTE_ORDER == __LITTLE_ENDIAN) -#endif - -#if defined(OS_MACOSX) || defined(OS_SOLARIS) || defined(OS_FREEBSD) ||\ - defined(OS_NETBSD) || defined(OS_OPENBSD) || defined(OS_DRAGONFLYBSD) ||\ - defined(OS_ANDROID) || defined(OS_HPUX) || defined(CYGWIN) -// Use fread/fwrite/fflush on platforms without _unlocked variants -#define fread_unlocked fread -#define fwrite_unlocked fwrite -#define fflush_unlocked fflush -#endif - -#if defined(OS_MACOSX) || defined(OS_FREEBSD) ||\ - defined(OS_OPENBSD) || defined(OS_DRAGONFLYBSD) -// Use fsync() on platforms without fdatasync() -#define fdatasync fsync -#endif - -#if defined(OS_ANDROID) && __ANDROID_API__ < 9 -// fdatasync() was only introduced in API level 9 on Android. Use fsync() -// when targetting older platforms. -#define fdatasync fsync -#endif - -namespace leveldb { -namespace port { - -static const bool kLittleEndian = PLATFORM_IS_LITTLE_ENDIAN; -#undef PLATFORM_IS_LITTLE_ENDIAN - -class CondVar; - -class Mutex { - public: - Mutex(); - ~Mutex(); - - void Lock(); - void Unlock(); - void AssertHeld() { } - - private: - friend class CondVar; - pthread_mutex_t mu_; - - // No copying - Mutex(const Mutex&); - void operator=(const Mutex&); -}; - -class CondVar { - public: - explicit CondVar(Mutex* mu); - ~CondVar(); - void Wait(); - void Signal(); - void SignalAll(); - private: - pthread_cond_t cv_; - Mutex* mu_; -}; - -typedef pthread_once_t OnceType; -#define LEVELDB_ONCE_INIT PTHREAD_ONCE_INIT -extern void InitOnce(OnceType* once, void (*initializer)()); - -inline bool Snappy_Compress(const char* input, size_t length, - ::std::string* output) { -#ifdef SNAPPY - output->resize(snappy::MaxCompressedLength(length)); - size_t outlen; - snappy::RawCompress(input, length, &(*output)[0], &outlen); - output->resize(outlen); - return true; -#endif - - return false; -} - -inline bool Snappy_GetUncompressedLength(const char* input, size_t length, - size_t* result) { -#ifdef SNAPPY - return snappy::GetUncompressedLength(input, length, result); -#else - return false; -#endif -} - -inline bool Snappy_Uncompress(const char* input, size_t length, - char* output) { -#ifdef SNAPPY - return snappy::RawUncompress(input, length, output); -#else - return false; -#endif -} - -inline bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg) { - return false; -} - -} // namespace port -} // namespace leveldb - -#endif // STORAGE_LEVELDB_PORT_PORT_POSIX_H_ diff --git a/leveldb-1.18/port/thread_annotations.h b/leveldb-1.18/port/thread_annotations.h deleted file mode 100644 index 9470ef5..0000000 --- a/leveldb-1.18/port/thread_annotations.h +++ /dev/null @@ -1,60 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_ -#define STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_ - -// Some environments provide custom macros to aid in static thread-safety -// analysis. Provide empty definitions of such macros unless they are already -// defined. - -#ifndef EXCLUSIVE_LOCKS_REQUIRED -#define EXCLUSIVE_LOCKS_REQUIRED(...) -#endif - -#ifndef SHARED_LOCKS_REQUIRED -#define SHARED_LOCKS_REQUIRED(...) -#endif - -#ifndef LOCKS_EXCLUDED -#define LOCKS_EXCLUDED(...) -#endif - -#ifndef LOCK_RETURNED -#define LOCK_RETURNED(x) -#endif - -#ifndef LOCKABLE -#define LOCKABLE -#endif - -#ifndef SCOPED_LOCKABLE -#define SCOPED_LOCKABLE -#endif - -#ifndef EXCLUSIVE_LOCK_FUNCTION -#define EXCLUSIVE_LOCK_FUNCTION(...) -#endif - -#ifndef SHARED_LOCK_FUNCTION -#define SHARED_LOCK_FUNCTION(...) -#endif - -#ifndef EXCLUSIVE_TRYLOCK_FUNCTION -#define EXCLUSIVE_TRYLOCK_FUNCTION(...) -#endif - -#ifndef SHARED_TRYLOCK_FUNCTION -#define SHARED_TRYLOCK_FUNCTION(...) -#endif - -#ifndef UNLOCK_FUNCTION -#define UNLOCK_FUNCTION(...) -#endif - -#ifndef NO_THREAD_SAFETY_ANALYSIS -#define NO_THREAD_SAFETY_ANALYSIS -#endif - -#endif // STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_ diff --git a/leveldb-1.18/port/win/stdint.h b/leveldb-1.18/port/win/stdint.h deleted file mode 100644 index 39edd0d..0000000 --- a/leveldb-1.18/port/win/stdint.h +++ /dev/null @@ -1,24 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -// MSVC didn't ship with this file until the 2010 version. - -#ifndef STORAGE_LEVELDB_PORT_WIN_STDINT_H_ -#define STORAGE_LEVELDB_PORT_WIN_STDINT_H_ - -#if !defined(_MSC_VER) -#error This file should only be included when compiling with MSVC. -#endif - -// Define C99 equivalent types. -typedef signed char int8_t; -typedef signed short int16_t; -typedef signed int int32_t; -typedef signed long long int64_t; -typedef unsigned char uint8_t; -typedef unsigned short uint16_t; -typedef unsigned int uint32_t; -typedef unsigned long long uint64_t; - -#endif // STORAGE_LEVELDB_PORT_WIN_STDINT_H_ diff --git a/leveldb-1.18/table/block.cc b/leveldb-1.18/table/block.cc deleted file mode 100644 index 43e402c..0000000 --- a/leveldb-1.18/table/block.cc +++ /dev/null @@ -1,268 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Decodes the blocks generated by block_builder.cc. - -#include "table/block.h" - -#include -#include -#include "leveldb/comparator.h" -#include "table/format.h" -#include "util/coding.h" -#include "util/logging.h" - -namespace leveldb { - -inline uint32_t Block::NumRestarts() const { - assert(size_ >= sizeof(uint32_t)); - return DecodeFixed32(data_ + size_ - sizeof(uint32_t)); -} - -Block::Block(const BlockContents& contents) - : data_(contents.data.data()), - size_(contents.data.size()), - owned_(contents.heap_allocated) { - if (size_ < sizeof(uint32_t)) { - size_ = 0; // Error marker - } else { - size_t max_restarts_allowed = (size_-sizeof(uint32_t)) / sizeof(uint32_t); - if (NumRestarts() > max_restarts_allowed) { - // The size is too small for NumRestarts() - size_ = 0; - } else { - restart_offset_ = size_ - (1 + NumRestarts()) * sizeof(uint32_t); - } - } -} - -Block::~Block() { - if (owned_) { - delete[] data_; - } -} - -// Helper routine: decode the next block entry starting at "p", -// storing the number of shared key bytes, non_shared key bytes, -// and the length of the value in "*shared", "*non_shared", and -// "*value_length", respectively. Will not dereference past "limit". -// -// If any errors are detected, returns NULL. Otherwise, returns a -// pointer to the key delta (just past the three decoded values). -static inline const char* DecodeEntry(const char* p, const char* limit, - uint32_t* shared, - uint32_t* non_shared, - uint32_t* value_length) { - if (limit - p < 3) return NULL; - *shared = reinterpret_cast(p)[0]; - *non_shared = reinterpret_cast(p)[1]; - *value_length = reinterpret_cast(p)[2]; - if ((*shared | *non_shared | *value_length) < 128) { - // Fast path: all three values are encoded in one byte each - p += 3; - } else { - if ((p = GetVarint32Ptr(p, limit, shared)) == NULL) return NULL; - if ((p = GetVarint32Ptr(p, limit, non_shared)) == NULL) return NULL; - if ((p = GetVarint32Ptr(p, limit, value_length)) == NULL) return NULL; - } - - if (static_cast(limit - p) < (*non_shared + *value_length)) { - return NULL; - } - return p; -} - -class Block::Iter : public Iterator { - private: - const Comparator* const comparator_; - const char* const data_; // underlying block contents - uint32_t const restarts_; // Offset of restart array (list of fixed32) - uint32_t const num_restarts_; // Number of uint32_t entries in restart array - - // current_ is offset in data_ of current entry. >= restarts_ if !Valid - uint32_t current_; - uint32_t restart_index_; // Index of restart block in which current_ falls - std::string key_; - Slice value_; - Status status_; - - inline int Compare(const Slice& a, const Slice& b) const { - return comparator_->Compare(a, b); - } - - // Return the offset in data_ just past the end of the current entry. - inline uint32_t NextEntryOffset() const { - return (value_.data() + value_.size()) - data_; - } - - uint32_t GetRestartPoint(uint32_t index) { - assert(index < num_restarts_); - return DecodeFixed32(data_ + restarts_ + index * sizeof(uint32_t)); - } - - void SeekToRestartPoint(uint32_t index) { - key_.clear(); - restart_index_ = index; - // current_ will be fixed by ParseNextKey(); - - // ParseNextKey() starts at the end of value_, so set value_ accordingly - uint32_t offset = GetRestartPoint(index); - value_ = Slice(data_ + offset, 0); - } - - public: - Iter(const Comparator* comparator, - const char* data, - uint32_t restarts, - uint32_t num_restarts) - : comparator_(comparator), - data_(data), - restarts_(restarts), - num_restarts_(num_restarts), - current_(restarts_), - restart_index_(num_restarts_) { - assert(num_restarts_ > 0); - } - - virtual bool Valid() const { return current_ < restarts_; } - virtual Status status() const { return status_; } - virtual Slice key() const { - assert(Valid()); - return key_; - } - virtual Slice value() const { - assert(Valid()); - return value_; - } - - virtual void Next() { - assert(Valid()); - ParseNextKey(); - } - - virtual void Prev() { - assert(Valid()); - - // Scan backwards to a restart point before current_ - const uint32_t original = current_; - while (GetRestartPoint(restart_index_) >= original) { - if (restart_index_ == 0) { - // No more entries - current_ = restarts_; - restart_index_ = num_restarts_; - return; - } - restart_index_--; - } - - SeekToRestartPoint(restart_index_); - do { - // Loop until end of current entry hits the start of original entry - } while (ParseNextKey() && NextEntryOffset() < original); - } - - virtual void Seek(const Slice& target) { - // Binary search in restart array to find the last restart point - // with a key < target - uint32_t left = 0; - uint32_t right = num_restarts_ - 1; - while (left < right) { - uint32_t mid = (left + right + 1) / 2; - uint32_t region_offset = GetRestartPoint(mid); - uint32_t shared, non_shared, value_length; - const char* key_ptr = DecodeEntry(data_ + region_offset, - data_ + restarts_, - &shared, &non_shared, &value_length); - if (key_ptr == NULL || (shared != 0)) { - CorruptionError(); - return; - } - Slice mid_key(key_ptr, non_shared); - if (Compare(mid_key, target) < 0) { - // Key at "mid" is smaller than "target". Therefore all - // blocks before "mid" are uninteresting. - left = mid; - } else { - // Key at "mid" is >= "target". Therefore all blocks at or - // after "mid" are uninteresting. - right = mid - 1; - } - } - - // Linear search (within restart block) for first key >= target - SeekToRestartPoint(left); - while (true) { - if (!ParseNextKey()) { - return; - } - if (Compare(key_, target) >= 0) { - return; - } - } - } - - virtual void SeekToFirst() { - SeekToRestartPoint(0); - ParseNextKey(); - } - - virtual void SeekToLast() { - SeekToRestartPoint(num_restarts_ - 1); - while (ParseNextKey() && NextEntryOffset() < restarts_) { - // Keep skipping - } - } - - private: - void CorruptionError() { - current_ = restarts_; - restart_index_ = num_restarts_; - status_ = Status::Corruption("bad entry in block"); - key_.clear(); - value_.clear(); - } - - bool ParseNextKey() { - current_ = NextEntryOffset(); - const char* p = data_ + current_; - const char* limit = data_ + restarts_; // Restarts come right after data - if (p >= limit) { - // No more entries to return. Mark as invalid. - current_ = restarts_; - restart_index_ = num_restarts_; - return false; - } - - // Decode next entry - uint32_t shared, non_shared, value_length; - p = DecodeEntry(p, limit, &shared, &non_shared, &value_length); - if (p == NULL || key_.size() < shared) { - CorruptionError(); - return false; - } else { - key_.resize(shared); - key_.append(p, non_shared); - value_ = Slice(p + non_shared, value_length); - while (restart_index_ + 1 < num_restarts_ && - GetRestartPoint(restart_index_ + 1) < current_) { - ++restart_index_; - } - return true; - } - } -}; - -Iterator* Block::NewIterator(const Comparator* cmp) { - if (size_ < sizeof(uint32_t)) { - return NewErrorIterator(Status::Corruption("bad block contents")); - } - const uint32_t num_restarts = NumRestarts(); - if (num_restarts == 0) { - return NewEmptyIterator(); - } else { - return new Iter(cmp, data_, restart_offset_, num_restarts); - } -} - -} // namespace leveldb diff --git a/leveldb-1.18/table/block.h b/leveldb-1.18/table/block.h deleted file mode 100644 index 2493eb9..0000000 --- a/leveldb-1.18/table/block.h +++ /dev/null @@ -1,44 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_TABLE_BLOCK_H_ -#define STORAGE_LEVELDB_TABLE_BLOCK_H_ - -#include -#include -#include "leveldb/iterator.h" - -namespace leveldb { - -struct BlockContents; -class Comparator; - -class Block { - public: - // Initialize the block with the specified contents. - explicit Block(const BlockContents& contents); - - ~Block(); - - size_t size() const { return size_; } - Iterator* NewIterator(const Comparator* comparator); - - private: - uint32_t NumRestarts() const; - - const char* data_; - size_t size_; - uint32_t restart_offset_; // Offset in data_ of restart array - bool owned_; // Block owns data_[] - - // No copying allowed - Block(const Block&); - void operator=(const Block&); - - class Iter; -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_TABLE_BLOCK_H_ diff --git a/leveldb-1.18/table/block_builder.cc b/leveldb-1.18/table/block_builder.cc deleted file mode 100644 index db660cd..0000000 --- a/leveldb-1.18/table/block_builder.cc +++ /dev/null @@ -1,109 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// BlockBuilder generates blocks where keys are prefix-compressed: -// -// When we store a key, we drop the prefix shared with the previous -// string. This helps reduce the space requirement significantly. -// Furthermore, once every K keys, we do not apply the prefix -// compression and store the entire key. We call this a "restart -// point". The tail end of the block stores the offsets of all of the -// restart points, and can be used to do a binary search when looking -// for a particular key. Values are stored as-is (without compression) -// immediately following the corresponding key. -// -// An entry for a particular key-value pair has the form: -// shared_bytes: varint32 -// unshared_bytes: varint32 -// value_length: varint32 -// key_delta: char[unshared_bytes] -// value: char[value_length] -// shared_bytes == 0 for restart points. -// -// The trailer of the block has the form: -// restarts: uint32[num_restarts] -// num_restarts: uint32 -// restarts[i] contains the offset within the block of the ith restart point. - -#include "table/block_builder.h" - -#include -#include -#include "leveldb/comparator.h" -#include "leveldb/table_builder.h" -#include "util/coding.h" - -namespace leveldb { - -BlockBuilder::BlockBuilder(const Options* options) - : options_(options), - restarts_(), - counter_(0), - finished_(false) { - assert(options->block_restart_interval >= 1); - restarts_.push_back(0); // First restart point is at offset 0 -} - -void BlockBuilder::Reset() { - buffer_.clear(); - restarts_.clear(); - restarts_.push_back(0); // First restart point is at offset 0 - counter_ = 0; - finished_ = false; - last_key_.clear(); -} - -size_t BlockBuilder::CurrentSizeEstimate() const { - return (buffer_.size() + // Raw data buffer - restarts_.size() * sizeof(uint32_t) + // Restart array - sizeof(uint32_t)); // Restart array length -} - -Slice BlockBuilder::Finish() { - // Append restart array - for (size_t i = 0; i < restarts_.size(); i++) { - PutFixed32(&buffer_, restarts_[i]); - } - PutFixed32(&buffer_, restarts_.size()); - finished_ = true; - return Slice(buffer_); -} - -void BlockBuilder::Add(const Slice& key, const Slice& value) { - Slice last_key_piece(last_key_); - assert(!finished_); - assert(counter_ <= options_->block_restart_interval); - assert(buffer_.empty() // No values yet? - || options_->comparator->Compare(key, last_key_piece) > 0); - size_t shared = 0; - if (counter_ < options_->block_restart_interval) { - // See how much sharing to do with previous string - const size_t min_length = std::min(last_key_piece.size(), key.size()); - while ((shared < min_length) && (last_key_piece[shared] == key[shared])) { - shared++; - } - } else { - // Restart compression - restarts_.push_back(buffer_.size()); - counter_ = 0; - } - const size_t non_shared = key.size() - shared; - - // Add "" to buffer_ - PutVarint32(&buffer_, shared); - PutVarint32(&buffer_, non_shared); - PutVarint32(&buffer_, value.size()); - - // Add string delta to buffer_ followed by value - buffer_.append(key.data() + shared, non_shared); - buffer_.append(value.data(), value.size()); - - // Update state - last_key_.resize(shared); - last_key_.append(key.data() + shared, non_shared); - assert(Slice(last_key_) == key); - counter_++; -} - -} // namespace leveldb diff --git a/leveldb-1.18/table/block_builder.h b/leveldb-1.18/table/block_builder.h deleted file mode 100644 index 4fbcb33..0000000 --- a/leveldb-1.18/table/block_builder.h +++ /dev/null @@ -1,57 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_TABLE_BLOCK_BUILDER_H_ -#define STORAGE_LEVELDB_TABLE_BLOCK_BUILDER_H_ - -#include - -#include -#include "leveldb/slice.h" - -namespace leveldb { - -struct Options; - -class BlockBuilder { - public: - explicit BlockBuilder(const Options* options); - - // Reset the contents as if the BlockBuilder was just constructed. - void Reset(); - - // REQUIRES: Finish() has not been called since the last call to Reset(). - // REQUIRES: key is larger than any previously added key - void Add(const Slice& key, const Slice& value); - - // Finish building the block and return a slice that refers to the - // block contents. The returned slice will remain valid for the - // lifetime of this builder or until Reset() is called. - Slice Finish(); - - // Returns an estimate of the current (uncompressed) size of the block - // we are building. - size_t CurrentSizeEstimate() const; - - // Return true iff no entries have been added since the last Reset() - bool empty() const { - return buffer_.empty(); - } - - private: - const Options* options_; - std::string buffer_; // Destination buffer - std::vector restarts_; // Restart points - int counter_; // Number of entries emitted since restart - bool finished_; // Has Finish() been called? - std::string last_key_; - - // No copying allowed - BlockBuilder(const BlockBuilder&); - void operator=(const BlockBuilder&); -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_TABLE_BLOCK_BUILDER_H_ diff --git a/leveldb-1.18/table/filter_block.cc b/leveldb-1.18/table/filter_block.cc deleted file mode 100644 index 203e15c..0000000 --- a/leveldb-1.18/table/filter_block.cc +++ /dev/null @@ -1,111 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "table/filter_block.h" - -#include "leveldb/filter_policy.h" -#include "util/coding.h" - -namespace leveldb { - -// See doc/table_format.txt for an explanation of the filter block format. - -// Generate new filter every 2KB of data -static const size_t kFilterBaseLg = 11; -static const size_t kFilterBase = 1 << kFilterBaseLg; - -FilterBlockBuilder::FilterBlockBuilder(const FilterPolicy* policy) - : policy_(policy) { -} - -void FilterBlockBuilder::StartBlock(uint64_t block_offset) { - uint64_t filter_index = (block_offset / kFilterBase); - assert(filter_index >= filter_offsets_.size()); - while (filter_index > filter_offsets_.size()) { - GenerateFilter(); - } -} - -void FilterBlockBuilder::AddKey(const Slice& key) { - Slice k = key; - start_.push_back(keys_.size()); - keys_.append(k.data(), k.size()); -} - -Slice FilterBlockBuilder::Finish() { - if (!start_.empty()) { - GenerateFilter(); - } - - // Append array of per-filter offsets - const uint32_t array_offset = result_.size(); - for (size_t i = 0; i < filter_offsets_.size(); i++) { - PutFixed32(&result_, filter_offsets_[i]); - } - - PutFixed32(&result_, array_offset); - result_.push_back(kFilterBaseLg); // Save encoding parameter in result - return Slice(result_); -} - -void FilterBlockBuilder::GenerateFilter() { - const size_t num_keys = start_.size(); - if (num_keys == 0) { - // Fast path if there are no keys for this filter - filter_offsets_.push_back(result_.size()); - return; - } - - // Make list of keys from flattened key structure - start_.push_back(keys_.size()); // Simplify length computation - tmp_keys_.resize(num_keys); - for (size_t i = 0; i < num_keys; i++) { - const char* base = keys_.data() + start_[i]; - size_t length = start_[i+1] - start_[i]; - tmp_keys_[i] = Slice(base, length); - } - - // Generate filter for current set of keys and append to result_. - filter_offsets_.push_back(result_.size()); - policy_->CreateFilter(&tmp_keys_[0], num_keys, &result_); - - tmp_keys_.clear(); - keys_.clear(); - start_.clear(); -} - -FilterBlockReader::FilterBlockReader(const FilterPolicy* policy, - const Slice& contents) - : policy_(policy), - data_(NULL), - offset_(NULL), - num_(0), - base_lg_(0) { - size_t n = contents.size(); - if (n < 5) return; // 1 byte for base_lg_ and 4 for start of offset array - base_lg_ = contents[n-1]; - uint32_t last_word = DecodeFixed32(contents.data() + n - 5); - if (last_word > n - 5) return; - data_ = contents.data(); - offset_ = data_ + last_word; - num_ = (n - 5 - last_word) / 4; -} - -bool FilterBlockReader::KeyMayMatch(uint64_t block_offset, const Slice& key) { - uint64_t index = block_offset >> base_lg_; - if (index < num_) { - uint32_t start = DecodeFixed32(offset_ + index*4); - uint32_t limit = DecodeFixed32(offset_ + index*4 + 4); - if (start <= limit && limit <= (offset_ - data_)) { - Slice filter = Slice(data_ + start, limit - start); - return policy_->KeyMayMatch(key, filter); - } else if (start == limit) { - // Empty filters do not match any keys - return false; - } - } - return true; // Errors are treated as potential matches -} - -} diff --git a/leveldb-1.18/table/filter_block.h b/leveldb-1.18/table/filter_block.h deleted file mode 100644 index c67d010..0000000 --- a/leveldb-1.18/table/filter_block.h +++ /dev/null @@ -1,68 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// A filter block is stored near the end of a Table file. It contains -// filters (e.g., bloom filters) for all data blocks in the table combined -// into a single filter block. - -#ifndef STORAGE_LEVELDB_TABLE_FILTER_BLOCK_H_ -#define STORAGE_LEVELDB_TABLE_FILTER_BLOCK_H_ - -#include -#include -#include -#include -#include "leveldb/slice.h" -#include "util/hash.h" - -namespace leveldb { - -class FilterPolicy; - -// A FilterBlockBuilder is used to construct all of the filters for a -// particular Table. It generates a single string which is stored as -// a special block in the Table. -// -// The sequence of calls to FilterBlockBuilder must match the regexp: -// (StartBlock AddKey*)* Finish -class FilterBlockBuilder { - public: - explicit FilterBlockBuilder(const FilterPolicy*); - - void StartBlock(uint64_t block_offset); - void AddKey(const Slice& key); - Slice Finish(); - - private: - void GenerateFilter(); - - const FilterPolicy* policy_; - std::string keys_; // Flattened key contents - std::vector start_; // Starting index in keys_ of each key - std::string result_; // Filter data computed so far - std::vector tmp_keys_; // policy_->CreateFilter() argument - std::vector filter_offsets_; - - // No copying allowed - FilterBlockBuilder(const FilterBlockBuilder&); - void operator=(const FilterBlockBuilder&); -}; - -class FilterBlockReader { - public: - // REQUIRES: "contents" and *policy must stay live while *this is live. - FilterBlockReader(const FilterPolicy* policy, const Slice& contents); - bool KeyMayMatch(uint64_t block_offset, const Slice& key); - - private: - const FilterPolicy* policy_; - const char* data_; // Pointer to filter data (at block-start) - const char* offset_; // Pointer to beginning of offset array (at block-end) - size_t num_; // Number of entries in offset array - size_t base_lg_; // Encoding parameter (see kFilterBaseLg in .cc file) -}; - -} - -#endif // STORAGE_LEVELDB_TABLE_FILTER_BLOCK_H_ diff --git a/leveldb-1.18/table/filter_block_test.cc b/leveldb-1.18/table/filter_block_test.cc deleted file mode 100644 index 8c4a474..0000000 --- a/leveldb-1.18/table/filter_block_test.cc +++ /dev/null @@ -1,128 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "table/filter_block.h" - -#include "leveldb/filter_policy.h" -#include "util/coding.h" -#include "util/hash.h" -#include "util/logging.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace leveldb { - -// For testing: emit an array with one hash value per key -class TestHashFilter : public FilterPolicy { - public: - virtual const char* Name() const { - return "TestHashFilter"; - } - - virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const { - for (int i = 0; i < n; i++) { - uint32_t h = Hash(keys[i].data(), keys[i].size(), 1); - PutFixed32(dst, h); - } - } - - virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const { - uint32_t h = Hash(key.data(), key.size(), 1); - for (size_t i = 0; i + 4 <= filter.size(); i += 4) { - if (h == DecodeFixed32(filter.data() + i)) { - return true; - } - } - return false; - } -}; - -class FilterBlockTest { - public: - TestHashFilter policy_; -}; - -TEST(FilterBlockTest, EmptyBuilder) { - FilterBlockBuilder builder(&policy_); - Slice block = builder.Finish(); - ASSERT_EQ("\\x00\\x00\\x00\\x00\\x0b", EscapeString(block)); - FilterBlockReader reader(&policy_, block); - ASSERT_TRUE(reader.KeyMayMatch(0, "foo")); - ASSERT_TRUE(reader.KeyMayMatch(100000, "foo")); -} - -TEST(FilterBlockTest, SingleChunk) { - FilterBlockBuilder builder(&policy_); - builder.StartBlock(100); - builder.AddKey("foo"); - builder.AddKey("bar"); - builder.AddKey("box"); - builder.StartBlock(200); - builder.AddKey("box"); - builder.StartBlock(300); - builder.AddKey("hello"); - Slice block = builder.Finish(); - FilterBlockReader reader(&policy_, block); - ASSERT_TRUE(reader.KeyMayMatch(100, "foo")); - ASSERT_TRUE(reader.KeyMayMatch(100, "bar")); - ASSERT_TRUE(reader.KeyMayMatch(100, "box")); - ASSERT_TRUE(reader.KeyMayMatch(100, "hello")); - ASSERT_TRUE(reader.KeyMayMatch(100, "foo")); - ASSERT_TRUE(! reader.KeyMayMatch(100, "missing")); - ASSERT_TRUE(! reader.KeyMayMatch(100, "other")); -} - -TEST(FilterBlockTest, MultiChunk) { - FilterBlockBuilder builder(&policy_); - - // First filter - builder.StartBlock(0); - builder.AddKey("foo"); - builder.StartBlock(2000); - builder.AddKey("bar"); - - // Second filter - builder.StartBlock(3100); - builder.AddKey("box"); - - // Third filter is empty - - // Last filter - builder.StartBlock(9000); - builder.AddKey("box"); - builder.AddKey("hello"); - - Slice block = builder.Finish(); - FilterBlockReader reader(&policy_, block); - - // Check first filter - ASSERT_TRUE(reader.KeyMayMatch(0, "foo")); - ASSERT_TRUE(reader.KeyMayMatch(2000, "bar")); - ASSERT_TRUE(! reader.KeyMayMatch(0, "box")); - ASSERT_TRUE(! reader.KeyMayMatch(0, "hello")); - - // Check second filter - ASSERT_TRUE(reader.KeyMayMatch(3100, "box")); - ASSERT_TRUE(! reader.KeyMayMatch(3100, "foo")); - ASSERT_TRUE(! reader.KeyMayMatch(3100, "bar")); - ASSERT_TRUE(! reader.KeyMayMatch(3100, "hello")); - - // Check third filter (empty) - ASSERT_TRUE(! reader.KeyMayMatch(4100, "foo")); - ASSERT_TRUE(! reader.KeyMayMatch(4100, "bar")); - ASSERT_TRUE(! reader.KeyMayMatch(4100, "box")); - ASSERT_TRUE(! reader.KeyMayMatch(4100, "hello")); - - // Check last filter - ASSERT_TRUE(reader.KeyMayMatch(9000, "box")); - ASSERT_TRUE(reader.KeyMayMatch(9000, "hello")); - ASSERT_TRUE(! reader.KeyMayMatch(9000, "foo")); - ASSERT_TRUE(! reader.KeyMayMatch(9000, "bar")); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/table/format.cc b/leveldb-1.18/table/format.cc deleted file mode 100644 index aa63144..0000000 --- a/leveldb-1.18/table/format.cc +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "table/format.h" - -#include "leveldb/env.h" -#include "port/port.h" -#include "table/block.h" -#include "util/coding.h" -#include "util/crc32c.h" - -namespace leveldb { - -void BlockHandle::EncodeTo(std::string* dst) const { - // Sanity check that all fields have been set - assert(offset_ != ~static_cast(0)); - assert(size_ != ~static_cast(0)); - PutVarint64(dst, offset_); - PutVarint64(dst, size_); -} - -Status BlockHandle::DecodeFrom(Slice* input) { - if (GetVarint64(input, &offset_) && - GetVarint64(input, &size_)) { - return Status::OK(); - } else { - return Status::Corruption("bad block handle"); - } -} - -void Footer::EncodeTo(std::string* dst) const { -#ifndef NDEBUG - const size_t original_size = dst->size(); -#endif - metaindex_handle_.EncodeTo(dst); - index_handle_.EncodeTo(dst); - dst->resize(2 * BlockHandle::kMaxEncodedLength); // Padding - PutFixed32(dst, static_cast(kTableMagicNumber & 0xffffffffu)); - PutFixed32(dst, static_cast(kTableMagicNumber >> 32)); - assert(dst->size() == original_size + kEncodedLength); -} - -Status Footer::DecodeFrom(Slice* input) { - const char* magic_ptr = input->data() + kEncodedLength - 8; - const uint32_t magic_lo = DecodeFixed32(magic_ptr); - const uint32_t magic_hi = DecodeFixed32(magic_ptr + 4); - const uint64_t magic = ((static_cast(magic_hi) << 32) | - (static_cast(magic_lo))); - if (magic != kTableMagicNumber) { - return Status::Corruption("not an sstable (bad magic number)"); - } - - Status result = metaindex_handle_.DecodeFrom(input); - if (result.ok()) { - result = index_handle_.DecodeFrom(input); - } - if (result.ok()) { - // We skip over any leftover data (just padding for now) in "input" - const char* end = magic_ptr + 8; - *input = Slice(end, input->data() + input->size() - end); - } - return result; -} - -Status ReadBlock(RandomAccessFile* file, - const ReadOptions& options, - const BlockHandle& handle, - BlockContents* result) { - result->data = Slice(); - result->cachable = false; - result->heap_allocated = false; - - // Read the block contents as well as the type/crc footer. - // See table_builder.cc for the code that built this structure. - size_t n = static_cast(handle.size()); - char* buf = new char[n + kBlockTrailerSize]; - Slice contents; - Status s = file->Read(handle.offset(), n + kBlockTrailerSize, &contents, buf); - if (!s.ok()) { - delete[] buf; - return s; - } - if (contents.size() != n + kBlockTrailerSize) { - delete[] buf; - return Status::Corruption("truncated block read"); - } - - // Check the crc of the type and the block contents - const char* data = contents.data(); // Pointer to where Read put the data - if (options.verify_checksums) { - const uint32_t crc = crc32c::Unmask(DecodeFixed32(data + n + 1)); - const uint32_t actual = crc32c::Value(data, n + 1); - if (actual != crc) { - delete[] buf; - s = Status::Corruption("block checksum mismatch"); - return s; - } - } - - switch (data[n]) { - case kNoCompression: - if (data != buf) { - // File implementation gave us pointer to some other data. - // Use it directly under the assumption that it will be live - // while the file is open. - delete[] buf; - result->data = Slice(data, n); - result->heap_allocated = false; - result->cachable = false; // Do not double-cache - } else { - result->data = Slice(buf, n); - result->heap_allocated = true; - result->cachable = true; - } - - // Ok - break; - case kSnappyCompression: { - size_t ulength = 0; - if (!port::Snappy_GetUncompressedLength(data, n, &ulength)) { - delete[] buf; - return Status::Corruption("corrupted compressed block contents"); - } - char* ubuf = new char[ulength]; - if (!port::Snappy_Uncompress(data, n, ubuf)) { - delete[] buf; - delete[] ubuf; - return Status::Corruption("corrupted compressed block contents"); - } - delete[] buf; - result->data = Slice(ubuf, ulength); - result->heap_allocated = true; - result->cachable = true; - break; - } - default: - delete[] buf; - return Status::Corruption("bad block type"); - } - - return Status::OK(); -} - -} // namespace leveldb diff --git a/leveldb-1.18/table/format.h b/leveldb-1.18/table/format.h deleted file mode 100644 index 6c0b80c..0000000 --- a/leveldb-1.18/table/format.h +++ /dev/null @@ -1,108 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_TABLE_FORMAT_H_ -#define STORAGE_LEVELDB_TABLE_FORMAT_H_ - -#include -#include -#include "leveldb/slice.h" -#include "leveldb/status.h" -#include "leveldb/table_builder.h" - -namespace leveldb { - -class Block; -class RandomAccessFile; -struct ReadOptions; - -// BlockHandle is a pointer to the extent of a file that stores a data -// block or a meta block. -class BlockHandle { - public: - BlockHandle(); - - // The offset of the block in the file. - uint64_t offset() const { return offset_; } - void set_offset(uint64_t offset) { offset_ = offset; } - - // The size of the stored block - uint64_t size() const { return size_; } - void set_size(uint64_t size) { size_ = size; } - - void EncodeTo(std::string* dst) const; - Status DecodeFrom(Slice* input); - - // Maximum encoding length of a BlockHandle - enum { kMaxEncodedLength = 10 + 10 }; - - private: - uint64_t offset_; - uint64_t size_; -}; - -// Footer encapsulates the fixed information stored at the tail -// end of every table file. -class Footer { - public: - Footer() { } - - // The block handle for the metaindex block of the table - const BlockHandle& metaindex_handle() const { return metaindex_handle_; } - void set_metaindex_handle(const BlockHandle& h) { metaindex_handle_ = h; } - - // The block handle for the index block of the table - const BlockHandle& index_handle() const { - return index_handle_; - } - void set_index_handle(const BlockHandle& h) { - index_handle_ = h; - } - - void EncodeTo(std::string* dst) const; - Status DecodeFrom(Slice* input); - - // Encoded length of a Footer. Note that the serialization of a - // Footer will always occupy exactly this many bytes. It consists - // of two block handles and a magic number. - enum { - kEncodedLength = 2*BlockHandle::kMaxEncodedLength + 8 - }; - - private: - BlockHandle metaindex_handle_; - BlockHandle index_handle_; -}; - -// kTableMagicNumber was picked by running -// echo http://code.google.com/p/leveldb/ | sha1sum -// and taking the leading 64 bits. -static const uint64_t kTableMagicNumber = 0xdb4775248b80fb57ull; - -// 1-byte type + 32-bit crc -static const size_t kBlockTrailerSize = 5; - -struct BlockContents { - Slice data; // Actual contents of data - bool cachable; // True iff data can be cached - bool heap_allocated; // True iff caller should delete[] data.data() -}; - -// Read the block identified by "handle" from "file". On failure -// return non-OK. On success fill *result and return OK. -extern Status ReadBlock(RandomAccessFile* file, - const ReadOptions& options, - const BlockHandle& handle, - BlockContents* result); - -// Implementation details follow. Clients should ignore, - -inline BlockHandle::BlockHandle() - : offset_(~static_cast(0)), - size_(~static_cast(0)) { -} - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_TABLE_FORMAT_H_ diff --git a/leveldb-1.18/table/iterator.cc b/leveldb-1.18/table/iterator.cc deleted file mode 100644 index 3d1c87f..0000000 --- a/leveldb-1.18/table/iterator.cc +++ /dev/null @@ -1,67 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/iterator.h" - -namespace leveldb { - -Iterator::Iterator() { - cleanup_.function = NULL; - cleanup_.next = NULL; -} - -Iterator::~Iterator() { - if (cleanup_.function != NULL) { - (*cleanup_.function)(cleanup_.arg1, cleanup_.arg2); - for (Cleanup* c = cleanup_.next; c != NULL; ) { - (*c->function)(c->arg1, c->arg2); - Cleanup* next = c->next; - delete c; - c = next; - } - } -} - -void Iterator::RegisterCleanup(CleanupFunction func, void* arg1, void* arg2) { - assert(func != NULL); - Cleanup* c; - if (cleanup_.function == NULL) { - c = &cleanup_; - } else { - c = new Cleanup; - c->next = cleanup_.next; - cleanup_.next = c; - } - c->function = func; - c->arg1 = arg1; - c->arg2 = arg2; -} - -namespace { -class EmptyIterator : public Iterator { - public: - EmptyIterator(const Status& s) : status_(s) { } - virtual bool Valid() const { return false; } - virtual void Seek(const Slice& target) { } - virtual void SeekToFirst() { } - virtual void SeekToLast() { } - virtual void Next() { assert(false); } - virtual void Prev() { assert(false); } - Slice key() const { assert(false); return Slice(); } - Slice value() const { assert(false); return Slice(); } - virtual Status status() const { return status_; } - private: - Status status_; -}; -} // namespace - -Iterator* NewEmptyIterator() { - return new EmptyIterator(Status::OK()); -} - -Iterator* NewErrorIterator(const Status& status) { - return new EmptyIterator(status); -} - -} // namespace leveldb diff --git a/leveldb-1.18/table/iterator_wrapper.h b/leveldb-1.18/table/iterator_wrapper.h deleted file mode 100644 index 9e16b3d..0000000 --- a/leveldb-1.18/table/iterator_wrapper.h +++ /dev/null @@ -1,63 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_TABLE_ITERATOR_WRAPPER_H_ -#define STORAGE_LEVELDB_TABLE_ITERATOR_WRAPPER_H_ - -namespace leveldb { - -// A internal wrapper class with an interface similar to Iterator that -// caches the valid() and key() results for an underlying iterator. -// This can help avoid virtual function calls and also gives better -// cache locality. -class IteratorWrapper { - public: - IteratorWrapper(): iter_(NULL), valid_(false) { } - explicit IteratorWrapper(Iterator* iter): iter_(NULL) { - Set(iter); - } - ~IteratorWrapper() { delete iter_; } - Iterator* iter() const { return iter_; } - - // Takes ownership of "iter" and will delete it when destroyed, or - // when Set() is invoked again. - void Set(Iterator* iter) { - delete iter_; - iter_ = iter; - if (iter_ == NULL) { - valid_ = false; - } else { - Update(); - } - } - - - // Iterator interface methods - bool Valid() const { return valid_; } - Slice key() const { assert(Valid()); return key_; } - Slice value() const { assert(Valid()); return iter_->value(); } - // Methods below require iter() != NULL - Status status() const { assert(iter_); return iter_->status(); } - void Next() { assert(iter_); iter_->Next(); Update(); } - void Prev() { assert(iter_); iter_->Prev(); Update(); } - void Seek(const Slice& k) { assert(iter_); iter_->Seek(k); Update(); } - void SeekToFirst() { assert(iter_); iter_->SeekToFirst(); Update(); } - void SeekToLast() { assert(iter_); iter_->SeekToLast(); Update(); } - - private: - void Update() { - valid_ = iter_->Valid(); - if (valid_) { - key_ = iter_->key(); - } - } - - Iterator* iter_; - bool valid_; - Slice key_; -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_TABLE_ITERATOR_WRAPPER_H_ diff --git a/leveldb-1.18/table/merger.cc b/leveldb-1.18/table/merger.cc deleted file mode 100644 index 2dde4dc..0000000 --- a/leveldb-1.18/table/merger.cc +++ /dev/null @@ -1,197 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "table/merger.h" - -#include "leveldb/comparator.h" -#include "leveldb/iterator.h" -#include "table/iterator_wrapper.h" - -namespace leveldb { - -namespace { -class MergingIterator : public Iterator { - public: - MergingIterator(const Comparator* comparator, Iterator** children, int n) - : comparator_(comparator), - children_(new IteratorWrapper[n]), - n_(n), - current_(NULL), - direction_(kForward) { - for (int i = 0; i < n; i++) { - children_[i].Set(children[i]); - } - } - - virtual ~MergingIterator() { - delete[] children_; - } - - virtual bool Valid() const { - return (current_ != NULL); - } - - virtual void SeekToFirst() { - for (int i = 0; i < n_; i++) { - children_[i].SeekToFirst(); - } - FindSmallest(); - direction_ = kForward; - } - - virtual void SeekToLast() { - for (int i = 0; i < n_; i++) { - children_[i].SeekToLast(); - } - FindLargest(); - direction_ = kReverse; - } - - virtual void Seek(const Slice& target) { - for (int i = 0; i < n_; i++) { - children_[i].Seek(target); - } - FindSmallest(); - direction_ = kForward; - } - - virtual void Next() { - assert(Valid()); - - // Ensure that all children are positioned after key(). - // If we are moving in the forward direction, it is already - // true for all of the non-current_ children since current_ is - // the smallest child and key() == current_->key(). Otherwise, - // we explicitly position the non-current_ children. - if (direction_ != kForward) { - for (int i = 0; i < n_; i++) { - IteratorWrapper* child = &children_[i]; - if (child != current_) { - child->Seek(key()); - if (child->Valid() && - comparator_->Compare(key(), child->key()) == 0) { - child->Next(); - } - } - } - direction_ = kForward; - } - - current_->Next(); - FindSmallest(); - } - - virtual void Prev() { - assert(Valid()); - - // Ensure that all children are positioned before key(). - // If we are moving in the reverse direction, it is already - // true for all of the non-current_ children since current_ is - // the largest child and key() == current_->key(). Otherwise, - // we explicitly position the non-current_ children. - if (direction_ != kReverse) { - for (int i = 0; i < n_; i++) { - IteratorWrapper* child = &children_[i]; - if (child != current_) { - child->Seek(key()); - if (child->Valid()) { - // Child is at first entry >= key(). Step back one to be < key() - child->Prev(); - } else { - // Child has no entries >= key(). Position at last entry. - child->SeekToLast(); - } - } - } - direction_ = kReverse; - } - - current_->Prev(); - FindLargest(); - } - - virtual Slice key() const { - assert(Valid()); - return current_->key(); - } - - virtual Slice value() const { - assert(Valid()); - return current_->value(); - } - - virtual Status status() const { - Status status; - for (int i = 0; i < n_; i++) { - status = children_[i].status(); - if (!status.ok()) { - break; - } - } - return status; - } - - private: - void FindSmallest(); - void FindLargest(); - - // We might want to use a heap in case there are lots of children. - // For now we use a simple array since we expect a very small number - // of children in leveldb. - const Comparator* comparator_; - IteratorWrapper* children_; - int n_; - IteratorWrapper* current_; - - // Which direction is the iterator moving? - enum Direction { - kForward, - kReverse - }; - Direction direction_; -}; - -void MergingIterator::FindSmallest() { - IteratorWrapper* smallest = NULL; - for (int i = 0; i < n_; i++) { - IteratorWrapper* child = &children_[i]; - if (child->Valid()) { - if (smallest == NULL) { - smallest = child; - } else if (comparator_->Compare(child->key(), smallest->key()) < 0) { - smallest = child; - } - } - } - current_ = smallest; -} - -void MergingIterator::FindLargest() { - IteratorWrapper* largest = NULL; - for (int i = n_-1; i >= 0; i--) { - IteratorWrapper* child = &children_[i]; - if (child->Valid()) { - if (largest == NULL) { - largest = child; - } else if (comparator_->Compare(child->key(), largest->key()) > 0) { - largest = child; - } - } - } - current_ = largest; -} -} // namespace - -Iterator* NewMergingIterator(const Comparator* cmp, Iterator** list, int n) { - assert(n >= 0); - if (n == 0) { - return NewEmptyIterator(); - } else if (n == 1) { - return list[0]; - } else { - return new MergingIterator(cmp, list, n); - } -} - -} // namespace leveldb diff --git a/leveldb-1.18/table/merger.h b/leveldb-1.18/table/merger.h deleted file mode 100644 index 91ddd80..0000000 --- a/leveldb-1.18/table/merger.h +++ /dev/null @@ -1,26 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_TABLE_MERGER_H_ -#define STORAGE_LEVELDB_TABLE_MERGER_H_ - -namespace leveldb { - -class Comparator; -class Iterator; - -// Return an iterator that provided the union of the data in -// children[0,n-1]. Takes ownership of the child iterators and -// will delete them when the result iterator is deleted. -// -// The result does no duplicate suppression. I.e., if a particular -// key is present in K child iterators, it will be yielded K times. -// -// REQUIRES: n >= 0 -extern Iterator* NewMergingIterator( - const Comparator* comparator, Iterator** children, int n); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_TABLE_MERGER_H_ diff --git a/leveldb-1.18/table/table.cc b/leveldb-1.18/table/table.cc deleted file mode 100644 index dff8a82..0000000 --- a/leveldb-1.18/table/table.cc +++ /dev/null @@ -1,285 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/table.h" - -#include "leveldb/cache.h" -#include "leveldb/comparator.h" -#include "leveldb/env.h" -#include "leveldb/filter_policy.h" -#include "leveldb/options.h" -#include "table/block.h" -#include "table/filter_block.h" -#include "table/format.h" -#include "table/two_level_iterator.h" -#include "util/coding.h" - -namespace leveldb { - -struct Table::Rep { - ~Rep() { - delete filter; - delete [] filter_data; - delete index_block; - } - - Options options; - Status status; - RandomAccessFile* file; - uint64_t cache_id; - FilterBlockReader* filter; - const char* filter_data; - - BlockHandle metaindex_handle; // Handle to metaindex_block: saved from footer - Block* index_block; -}; - -Status Table::Open(const Options& options, - RandomAccessFile* file, - uint64_t size, - Table** table) { - *table = NULL; - if (size < Footer::kEncodedLength) { - return Status::Corruption("file is too short to be an sstable"); - } - - char footer_space[Footer::kEncodedLength]; - Slice footer_input; - Status s = file->Read(size - Footer::kEncodedLength, Footer::kEncodedLength, - &footer_input, footer_space); - if (!s.ok()) return s; - - Footer footer; - s = footer.DecodeFrom(&footer_input); - if (!s.ok()) return s; - - // Read the index block - BlockContents contents; - Block* index_block = NULL; - if (s.ok()) { - ReadOptions opt; - if (options.paranoid_checks) { - opt.verify_checksums = true; - } - s = ReadBlock(file, opt, footer.index_handle(), &contents); - if (s.ok()) { - index_block = new Block(contents); - } - } - - if (s.ok()) { - // We've successfully read the footer and the index block: we're - // ready to serve requests. - Rep* rep = new Table::Rep; - rep->options = options; - rep->file = file; - rep->metaindex_handle = footer.metaindex_handle(); - rep->index_block = index_block; - rep->cache_id = (options.block_cache ? options.block_cache->NewId() : 0); - rep->filter_data = NULL; - rep->filter = NULL; - *table = new Table(rep); - (*table)->ReadMeta(footer); - } else { - if (index_block) delete index_block; - } - - return s; -} - -void Table::ReadMeta(const Footer& footer) { - if (rep_->options.filter_policy == NULL) { - return; // Do not need any metadata - } - - // TODO(sanjay): Skip this if footer.metaindex_handle() size indicates - // it is an empty block. - ReadOptions opt; - if (rep_->options.paranoid_checks) { - opt.verify_checksums = true; - } - BlockContents contents; - if (!ReadBlock(rep_->file, opt, footer.metaindex_handle(), &contents).ok()) { - // Do not propagate errors since meta info is not needed for operation - return; - } - Block* meta = new Block(contents); - - Iterator* iter = meta->NewIterator(BytewiseComparator()); - std::string key = "filter."; - key.append(rep_->options.filter_policy->Name()); - iter->Seek(key); - if (iter->Valid() && iter->key() == Slice(key)) { - ReadFilter(iter->value()); - } - delete iter; - delete meta; -} - -void Table::ReadFilter(const Slice& filter_handle_value) { - Slice v = filter_handle_value; - BlockHandle filter_handle; - if (!filter_handle.DecodeFrom(&v).ok()) { - return; - } - - // We might want to unify with ReadBlock() if we start - // requiring checksum verification in Table::Open. - ReadOptions opt; - if (rep_->options.paranoid_checks) { - opt.verify_checksums = true; - } - BlockContents block; - if (!ReadBlock(rep_->file, opt, filter_handle, &block).ok()) { - return; - } - if (block.heap_allocated) { - rep_->filter_data = block.data.data(); // Will need to delete later - } - rep_->filter = new FilterBlockReader(rep_->options.filter_policy, block.data); -} - -Table::~Table() { - delete rep_; -} - -static void DeleteBlock(void* arg, void* ignored) { - delete reinterpret_cast(arg); -} - -static void DeleteCachedBlock(const Slice& key, void* value) { - Block* block = reinterpret_cast(value); - delete block; -} - -static void ReleaseBlock(void* arg, void* h) { - Cache* cache = reinterpret_cast(arg); - Cache::Handle* handle = reinterpret_cast(h); - cache->Release(handle); -} - -// Convert an index iterator value (i.e., an encoded BlockHandle) -// into an iterator over the contents of the corresponding block. -Iterator* Table::BlockReader(void* arg, - const ReadOptions& options, - const Slice& index_value) { - Table* table = reinterpret_cast(arg); - Cache* block_cache = table->rep_->options.block_cache; - Block* block = NULL; - Cache::Handle* cache_handle = NULL; - - BlockHandle handle; - Slice input = index_value; - Status s = handle.DecodeFrom(&input); - // We intentionally allow extra stuff in index_value so that we - // can add more features in the future. - - if (s.ok()) { - BlockContents contents; - if (block_cache != NULL) { - char cache_key_buffer[16]; - EncodeFixed64(cache_key_buffer, table->rep_->cache_id); - EncodeFixed64(cache_key_buffer+8, handle.offset()); - Slice key(cache_key_buffer, sizeof(cache_key_buffer)); - cache_handle = block_cache->Lookup(key); - if (cache_handle != NULL) { - block = reinterpret_cast(block_cache->Value(cache_handle)); - } else { - s = ReadBlock(table->rep_->file, options, handle, &contents); - if (s.ok()) { - block = new Block(contents); - if (contents.cachable && options.fill_cache) { - cache_handle = block_cache->Insert( - key, block, block->size(), &DeleteCachedBlock); - } - } - } - } else { - s = ReadBlock(table->rep_->file, options, handle, &contents); - if (s.ok()) { - block = new Block(contents); - } - } - } - - Iterator* iter; - if (block != NULL) { - iter = block->NewIterator(table->rep_->options.comparator); - if (cache_handle == NULL) { - iter->RegisterCleanup(&DeleteBlock, block, NULL); - } else { - iter->RegisterCleanup(&ReleaseBlock, block_cache, cache_handle); - } - } else { - iter = NewErrorIterator(s); - } - return iter; -} - -Iterator* Table::NewIterator(const ReadOptions& options) const { - return NewTwoLevelIterator( - rep_->index_block->NewIterator(rep_->options.comparator), - &Table::BlockReader, const_cast(this), options); -} - -Status Table::InternalGet(const ReadOptions& options, const Slice& k, - void* arg, - void (*saver)(void*, const Slice&, const Slice&)) { - Status s; - Iterator* iiter = rep_->index_block->NewIterator(rep_->options.comparator); - iiter->Seek(k); - if (iiter->Valid()) { - Slice handle_value = iiter->value(); - FilterBlockReader* filter = rep_->filter; - BlockHandle handle; - if (filter != NULL && - handle.DecodeFrom(&handle_value).ok() && - !filter->KeyMayMatch(handle.offset(), k)) { - // Not found - } else { - Iterator* block_iter = BlockReader(this, options, iiter->value()); - block_iter->Seek(k); - if (block_iter->Valid()) { - (*saver)(arg, block_iter->key(), block_iter->value()); - } - s = block_iter->status(); - delete block_iter; - } - } - if (s.ok()) { - s = iiter->status(); - } - delete iiter; - return s; -} - - -uint64_t Table::ApproximateOffsetOf(const Slice& key) const { - Iterator* index_iter = - rep_->index_block->NewIterator(rep_->options.comparator); - index_iter->Seek(key); - uint64_t result; - if (index_iter->Valid()) { - BlockHandle handle; - Slice input = index_iter->value(); - Status s = handle.DecodeFrom(&input); - if (s.ok()) { - result = handle.offset(); - } else { - // Strange: we can't decode the block handle in the index block. - // We'll just return the offset of the metaindex block, which is - // close to the whole file size for this case. - result = rep_->metaindex_handle.offset(); - } - } else { - // key is past the last key in the file. Approximate the offset - // by returning the offset of the metaindex block (which is - // right near the end of the file). - result = rep_->metaindex_handle.offset(); - } - delete index_iter; - return result; -} - -} // namespace leveldb diff --git a/leveldb-1.18/table/table_builder.cc b/leveldb-1.18/table/table_builder.cc deleted file mode 100644 index 62002c8..0000000 --- a/leveldb-1.18/table/table_builder.cc +++ /dev/null @@ -1,270 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/table_builder.h" - -#include -#include "leveldb/comparator.h" -#include "leveldb/env.h" -#include "leveldb/filter_policy.h" -#include "leveldb/options.h" -#include "table/block_builder.h" -#include "table/filter_block.h" -#include "table/format.h" -#include "util/coding.h" -#include "util/crc32c.h" - -namespace leveldb { - -struct TableBuilder::Rep { - Options options; - Options index_block_options; - WritableFile* file; - uint64_t offset; - Status status; - BlockBuilder data_block; - BlockBuilder index_block; - std::string last_key; - int64_t num_entries; - bool closed; // Either Finish() or Abandon() has been called. - FilterBlockBuilder* filter_block; - - // We do not emit the index entry for a block until we have seen the - // first key for the next data block. This allows us to use shorter - // keys in the index block. For example, consider a block boundary - // between the keys "the quick brown fox" and "the who". We can use - // "the r" as the key for the index block entry since it is >= all - // entries in the first block and < all entries in subsequent - // blocks. - // - // Invariant: r->pending_index_entry is true only if data_block is empty. - bool pending_index_entry; - BlockHandle pending_handle; // Handle to add to index block - - std::string compressed_output; - - Rep(const Options& opt, WritableFile* f) - : options(opt), - index_block_options(opt), - file(f), - offset(0), - data_block(&options), - index_block(&index_block_options), - num_entries(0), - closed(false), - filter_block(opt.filter_policy == NULL ? NULL - : new FilterBlockBuilder(opt.filter_policy)), - pending_index_entry(false) { - index_block_options.block_restart_interval = 1; - } -}; - -TableBuilder::TableBuilder(const Options& options, WritableFile* file) - : rep_(new Rep(options, file)) { - if (rep_->filter_block != NULL) { - rep_->filter_block->StartBlock(0); - } -} - -TableBuilder::~TableBuilder() { - assert(rep_->closed); // Catch errors where caller forgot to call Finish() - delete rep_->filter_block; - delete rep_; -} - -Status TableBuilder::ChangeOptions(const Options& options) { - // Note: if more fields are added to Options, update - // this function to catch changes that should not be allowed to - // change in the middle of building a Table. - if (options.comparator != rep_->options.comparator) { - return Status::InvalidArgument("changing comparator while building table"); - } - - // Note that any live BlockBuilders point to rep_->options and therefore - // will automatically pick up the updated options. - rep_->options = options; - rep_->index_block_options = options; - rep_->index_block_options.block_restart_interval = 1; - return Status::OK(); -} - -void TableBuilder::Add(const Slice& key, const Slice& value) { - Rep* r = rep_; - assert(!r->closed); - if (!ok()) return; - if (r->num_entries > 0) { - assert(r->options.comparator->Compare(key, Slice(r->last_key)) > 0); - } - - if (r->pending_index_entry) { - assert(r->data_block.empty()); - r->options.comparator->FindShortestSeparator(&r->last_key, key); - std::string handle_encoding; - r->pending_handle.EncodeTo(&handle_encoding); - r->index_block.Add(r->last_key, Slice(handle_encoding)); - r->pending_index_entry = false; - } - - if (r->filter_block != NULL) { - r->filter_block->AddKey(key); - } - - r->last_key.assign(key.data(), key.size()); - r->num_entries++; - r->data_block.Add(key, value); - - const size_t estimated_block_size = r->data_block.CurrentSizeEstimate(); - if (estimated_block_size >= r->options.block_size) { - Flush(); - } -} - -void TableBuilder::Flush() { - Rep* r = rep_; - assert(!r->closed); - if (!ok()) return; - if (r->data_block.empty()) return; - assert(!r->pending_index_entry); - WriteBlock(&r->data_block, &r->pending_handle); - if (ok()) { - r->pending_index_entry = true; - r->status = r->file->Flush(); - } - if (r->filter_block != NULL) { - r->filter_block->StartBlock(r->offset); - } -} - -void TableBuilder::WriteBlock(BlockBuilder* block, BlockHandle* handle) { - // File format contains a sequence of blocks where each block has: - // block_data: uint8[n] - // type: uint8 - // crc: uint32 - assert(ok()); - Rep* r = rep_; - Slice raw = block->Finish(); - - Slice block_contents; - CompressionType type = r->options.compression; - // TODO(postrelease): Support more compression options: zlib? - switch (type) { - case kNoCompression: - block_contents = raw; - break; - - case kSnappyCompression: { - std::string* compressed = &r->compressed_output; - if (port::Snappy_Compress(raw.data(), raw.size(), compressed) && - compressed->size() < raw.size() - (raw.size() / 8u)) { - block_contents = *compressed; - } else { - // Snappy not supported, or compressed less than 12.5%, so just - // store uncompressed form - block_contents = raw; - type = kNoCompression; - } - break; - } - } - WriteRawBlock(block_contents, type, handle); - r->compressed_output.clear(); - block->Reset(); -} - -void TableBuilder::WriteRawBlock(const Slice& block_contents, - CompressionType type, - BlockHandle* handle) { - Rep* r = rep_; - handle->set_offset(r->offset); - handle->set_size(block_contents.size()); - r->status = r->file->Append(block_contents); - if (r->status.ok()) { - char trailer[kBlockTrailerSize]; - trailer[0] = type; - uint32_t crc = crc32c::Value(block_contents.data(), block_contents.size()); - crc = crc32c::Extend(crc, trailer, 1); // Extend crc to cover block type - EncodeFixed32(trailer+1, crc32c::Mask(crc)); - r->status = r->file->Append(Slice(trailer, kBlockTrailerSize)); - if (r->status.ok()) { - r->offset += block_contents.size() + kBlockTrailerSize; - } - } -} - -Status TableBuilder::status() const { - return rep_->status; -} - -Status TableBuilder::Finish() { - Rep* r = rep_; - Flush(); - assert(!r->closed); - r->closed = true; - - BlockHandle filter_block_handle, metaindex_block_handle, index_block_handle; - - // Write filter block - if (ok() && r->filter_block != NULL) { - WriteRawBlock(r->filter_block->Finish(), kNoCompression, - &filter_block_handle); - } - - // Write metaindex block - if (ok()) { - BlockBuilder meta_index_block(&r->options); - if (r->filter_block != NULL) { - // Add mapping from "filter.Name" to location of filter data - std::string key = "filter."; - key.append(r->options.filter_policy->Name()); - std::string handle_encoding; - filter_block_handle.EncodeTo(&handle_encoding); - meta_index_block.Add(key, handle_encoding); - } - - // TODO(postrelease): Add stats and other meta blocks - WriteBlock(&meta_index_block, &metaindex_block_handle); - } - - // Write index block - if (ok()) { - if (r->pending_index_entry) { - r->options.comparator->FindShortSuccessor(&r->last_key); - std::string handle_encoding; - r->pending_handle.EncodeTo(&handle_encoding); - r->index_block.Add(r->last_key, Slice(handle_encoding)); - r->pending_index_entry = false; - } - WriteBlock(&r->index_block, &index_block_handle); - } - - // Write footer - if (ok()) { - Footer footer; - footer.set_metaindex_handle(metaindex_block_handle); - footer.set_index_handle(index_block_handle); - std::string footer_encoding; - footer.EncodeTo(&footer_encoding); - r->status = r->file->Append(footer_encoding); - if (r->status.ok()) { - r->offset += footer_encoding.size(); - } - } - return r->status; -} - -void TableBuilder::Abandon() { - Rep* r = rep_; - assert(!r->closed); - r->closed = true; -} - -uint64_t TableBuilder::NumEntries() const { - return rep_->num_entries; -} - -uint64_t TableBuilder::FileSize() const { - return rep_->offset; -} - -} // namespace leveldb diff --git a/leveldb-1.18/table/table_test.cc b/leveldb-1.18/table/table_test.cc deleted file mode 100644 index c723bf8..0000000 --- a/leveldb-1.18/table/table_test.cc +++ /dev/null @@ -1,868 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/table.h" - -#include -#include -#include "db/dbformat.h" -#include "db/memtable.h" -#include "db/write_batch_internal.h" -#include "leveldb/db.h" -#include "leveldb/env.h" -#include "leveldb/iterator.h" -#include "leveldb/table_builder.h" -#include "table/block.h" -#include "table/block_builder.h" -#include "table/format.h" -#include "util/random.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace leveldb { - -// Return reverse of "key". -// Used to test non-lexicographic comparators. -static std::string Reverse(const Slice& key) { - std::string str(key.ToString()); - std::string rev(""); - for (std::string::reverse_iterator rit = str.rbegin(); - rit != str.rend(); ++rit) { - rev.push_back(*rit); - } - return rev; -} - -namespace { -class ReverseKeyComparator : public Comparator { - public: - virtual const char* Name() const { - return "leveldb.ReverseBytewiseComparator"; - } - - virtual int Compare(const Slice& a, const Slice& b) const { - return BytewiseComparator()->Compare(Reverse(a), Reverse(b)); - } - - virtual void FindShortestSeparator( - std::string* start, - const Slice& limit) const { - std::string s = Reverse(*start); - std::string l = Reverse(limit); - BytewiseComparator()->FindShortestSeparator(&s, l); - *start = Reverse(s); - } - - virtual void FindShortSuccessor(std::string* key) const { - std::string s = Reverse(*key); - BytewiseComparator()->FindShortSuccessor(&s); - *key = Reverse(s); - } -}; -} // namespace -static ReverseKeyComparator reverse_key_comparator; - -static void Increment(const Comparator* cmp, std::string* key) { - if (cmp == BytewiseComparator()) { - key->push_back('\0'); - } else { - assert(cmp == &reverse_key_comparator); - std::string rev = Reverse(*key); - rev.push_back('\0'); - *key = Reverse(rev); - } -} - -// An STL comparator that uses a Comparator -namespace { -struct STLLessThan { - const Comparator* cmp; - - STLLessThan() : cmp(BytewiseComparator()) { } - STLLessThan(const Comparator* c) : cmp(c) { } - bool operator()(const std::string& a, const std::string& b) const { - return cmp->Compare(Slice(a), Slice(b)) < 0; - } -}; -} // namespace - -class StringSink: public WritableFile { - public: - ~StringSink() { } - - const std::string& contents() const { return contents_; } - - virtual Status Close() { return Status::OK(); } - virtual Status Flush() { return Status::OK(); } - virtual Status Sync() { return Status::OK(); } - - virtual Status Append(const Slice& data) { - contents_.append(data.data(), data.size()); - return Status::OK(); - } - - private: - std::string contents_; -}; - - -class StringSource: public RandomAccessFile { - public: - StringSource(const Slice& contents) - : contents_(contents.data(), contents.size()) { - } - - virtual ~StringSource() { } - - uint64_t Size() const { return contents_.size(); } - - virtual Status Read(uint64_t offset, size_t n, Slice* result, - char* scratch) const { - if (offset > contents_.size()) { - return Status::InvalidArgument("invalid Read offset"); - } - if (offset + n > contents_.size()) { - n = contents_.size() - offset; - } - memcpy(scratch, &contents_[offset], n); - *result = Slice(scratch, n); - return Status::OK(); - } - - private: - std::string contents_; -}; - -typedef std::map KVMap; - -// Helper class for tests to unify the interface between -// BlockBuilder/TableBuilder and Block/Table. -class Constructor { - public: - explicit Constructor(const Comparator* cmp) : data_(STLLessThan(cmp)) { } - virtual ~Constructor() { } - - void Add(const std::string& key, const Slice& value) { - data_[key] = value.ToString(); - } - - // Finish constructing the data structure with all the keys that have - // been added so far. Returns the keys in sorted order in "*keys" - // and stores the key/value pairs in "*kvmap" - void Finish(const Options& options, - std::vector* keys, - KVMap* kvmap) { - *kvmap = data_; - keys->clear(); - for (KVMap::const_iterator it = data_.begin(); - it != data_.end(); - ++it) { - keys->push_back(it->first); - } - data_.clear(); - Status s = FinishImpl(options, *kvmap); - ASSERT_TRUE(s.ok()) << s.ToString(); - } - - // Construct the data structure from the data in "data" - virtual Status FinishImpl(const Options& options, const KVMap& data) = 0; - - virtual Iterator* NewIterator() const = 0; - - virtual const KVMap& data() { return data_; } - - virtual DB* db() const { return NULL; } // Overridden in DBConstructor - - private: - KVMap data_; -}; - -class BlockConstructor: public Constructor { - public: - explicit BlockConstructor(const Comparator* cmp) - : Constructor(cmp), - comparator_(cmp), - block_(NULL) { } - ~BlockConstructor() { - delete block_; - } - virtual Status FinishImpl(const Options& options, const KVMap& data) { - delete block_; - block_ = NULL; - BlockBuilder builder(&options); - - for (KVMap::const_iterator it = data.begin(); - it != data.end(); - ++it) { - builder.Add(it->first, it->second); - } - // Open the block - data_ = builder.Finish().ToString(); - BlockContents contents; - contents.data = data_; - contents.cachable = false; - contents.heap_allocated = false; - block_ = new Block(contents); - return Status::OK(); - } - virtual Iterator* NewIterator() const { - return block_->NewIterator(comparator_); - } - - private: - const Comparator* comparator_; - std::string data_; - Block* block_; - - BlockConstructor(); -}; - -class TableConstructor: public Constructor { - public: - TableConstructor(const Comparator* cmp) - : Constructor(cmp), - source_(NULL), table_(NULL) { - } - ~TableConstructor() { - Reset(); - } - virtual Status FinishImpl(const Options& options, const KVMap& data) { - Reset(); - StringSink sink; - TableBuilder builder(options, &sink); - - for (KVMap::const_iterator it = data.begin(); - it != data.end(); - ++it) { - builder.Add(it->first, it->second); - ASSERT_TRUE(builder.status().ok()); - } - Status s = builder.Finish(); - ASSERT_TRUE(s.ok()) << s.ToString(); - - ASSERT_EQ(sink.contents().size(), builder.FileSize()); - - // Open the table - source_ = new StringSource(sink.contents()); - Options table_options; - table_options.comparator = options.comparator; - return Table::Open(table_options, source_, sink.contents().size(), &table_); - } - - virtual Iterator* NewIterator() const { - return table_->NewIterator(ReadOptions()); - } - - uint64_t ApproximateOffsetOf(const Slice& key) const { - return table_->ApproximateOffsetOf(key); - } - - private: - void Reset() { - delete table_; - delete source_; - table_ = NULL; - source_ = NULL; - } - - StringSource* source_; - Table* table_; - - TableConstructor(); -}; - -// A helper class that converts internal format keys into user keys -class KeyConvertingIterator: public Iterator { - public: - explicit KeyConvertingIterator(Iterator* iter) : iter_(iter) { } - virtual ~KeyConvertingIterator() { delete iter_; } - virtual bool Valid() const { return iter_->Valid(); } - virtual void Seek(const Slice& target) { - ParsedInternalKey ikey(target, kMaxSequenceNumber, kTypeValue); - std::string encoded; - AppendInternalKey(&encoded, ikey); - iter_->Seek(encoded); - } - virtual void SeekToFirst() { iter_->SeekToFirst(); } - virtual void SeekToLast() { iter_->SeekToLast(); } - virtual void Next() { iter_->Next(); } - virtual void Prev() { iter_->Prev(); } - - virtual Slice key() const { - assert(Valid()); - ParsedInternalKey key; - if (!ParseInternalKey(iter_->key(), &key)) { - status_ = Status::Corruption("malformed internal key"); - return Slice("corrupted key"); - } - return key.user_key; - } - - virtual Slice value() const { return iter_->value(); } - virtual Status status() const { - return status_.ok() ? iter_->status() : status_; - } - - private: - mutable Status status_; - Iterator* iter_; - - // No copying allowed - KeyConvertingIterator(const KeyConvertingIterator&); - void operator=(const KeyConvertingIterator&); -}; - -class MemTableConstructor: public Constructor { - public: - explicit MemTableConstructor(const Comparator* cmp) - : Constructor(cmp), - internal_comparator_(cmp) { - memtable_ = new MemTable(internal_comparator_); - memtable_->Ref(); - } - ~MemTableConstructor() { - memtable_->Unref(); - } - virtual Status FinishImpl(const Options& options, const KVMap& data) { - memtable_->Unref(); - memtable_ = new MemTable(internal_comparator_); - memtable_->Ref(); - int seq = 1; - for (KVMap::const_iterator it = data.begin(); - it != data.end(); - ++it) { - memtable_->Add(seq, kTypeValue, it->first, it->second); - seq++; - } - return Status::OK(); - } - virtual Iterator* NewIterator() const { - return new KeyConvertingIterator(memtable_->NewIterator()); - } - - private: - InternalKeyComparator internal_comparator_; - MemTable* memtable_; -}; - -class DBConstructor: public Constructor { - public: - explicit DBConstructor(const Comparator* cmp) - : Constructor(cmp), - comparator_(cmp) { - db_ = NULL; - NewDB(); - } - ~DBConstructor() { - delete db_; - } - virtual Status FinishImpl(const Options& options, const KVMap& data) { - delete db_; - db_ = NULL; - NewDB(); - for (KVMap::const_iterator it = data.begin(); - it != data.end(); - ++it) { - WriteBatch batch; - batch.Put(it->first, it->second); - ASSERT_TRUE(db_->Write(WriteOptions(), &batch).ok()); - } - return Status::OK(); - } - virtual Iterator* NewIterator() const { - return db_->NewIterator(ReadOptions()); - } - - virtual DB* db() const { return db_; } - - private: - void NewDB() { - std::string name = test::TmpDir() + "/table_testdb"; - - Options options; - options.comparator = comparator_; - Status status = DestroyDB(name, options); - ASSERT_TRUE(status.ok()) << status.ToString(); - - options.create_if_missing = true; - options.error_if_exists = true; - options.write_buffer_size = 10000; // Something small to force merging - status = DB::Open(options, name, &db_); - ASSERT_TRUE(status.ok()) << status.ToString(); - } - - const Comparator* comparator_; - DB* db_; -}; - -enum TestType { - TABLE_TEST, - BLOCK_TEST, - MEMTABLE_TEST, - DB_TEST -}; - -struct TestArgs { - TestType type; - bool reverse_compare; - int restart_interval; -}; - -static const TestArgs kTestArgList[] = { - { TABLE_TEST, false, 16 }, - { TABLE_TEST, false, 1 }, - { TABLE_TEST, false, 1024 }, - { TABLE_TEST, true, 16 }, - { TABLE_TEST, true, 1 }, - { TABLE_TEST, true, 1024 }, - - { BLOCK_TEST, false, 16 }, - { BLOCK_TEST, false, 1 }, - { BLOCK_TEST, false, 1024 }, - { BLOCK_TEST, true, 16 }, - { BLOCK_TEST, true, 1 }, - { BLOCK_TEST, true, 1024 }, - - // Restart interval does not matter for memtables - { MEMTABLE_TEST, false, 16 }, - { MEMTABLE_TEST, true, 16 }, - - // Do not bother with restart interval variations for DB - { DB_TEST, false, 16 }, - { DB_TEST, true, 16 }, -}; -static const int kNumTestArgs = sizeof(kTestArgList) / sizeof(kTestArgList[0]); - -class Harness { - public: - Harness() : constructor_(NULL) { } - - void Init(const TestArgs& args) { - delete constructor_; - constructor_ = NULL; - options_ = Options(); - - options_.block_restart_interval = args.restart_interval; - // Use shorter block size for tests to exercise block boundary - // conditions more. - options_.block_size = 256; - if (args.reverse_compare) { - options_.comparator = &reverse_key_comparator; - } - switch (args.type) { - case TABLE_TEST: - constructor_ = new TableConstructor(options_.comparator); - break; - case BLOCK_TEST: - constructor_ = new BlockConstructor(options_.comparator); - break; - case MEMTABLE_TEST: - constructor_ = new MemTableConstructor(options_.comparator); - break; - case DB_TEST: - constructor_ = new DBConstructor(options_.comparator); - break; - } - } - - ~Harness() { - delete constructor_; - } - - void Add(const std::string& key, const std::string& value) { - constructor_->Add(key, value); - } - - void Test(Random* rnd) { - std::vector keys; - KVMap data; - constructor_->Finish(options_, &keys, &data); - - TestForwardScan(keys, data); - TestBackwardScan(keys, data); - TestRandomAccess(rnd, keys, data); - } - - void TestForwardScan(const std::vector& keys, - const KVMap& data) { - Iterator* iter = constructor_->NewIterator(); - ASSERT_TRUE(!iter->Valid()); - iter->SeekToFirst(); - for (KVMap::const_iterator model_iter = data.begin(); - model_iter != data.end(); - ++model_iter) { - ASSERT_EQ(ToString(data, model_iter), ToString(iter)); - iter->Next(); - } - ASSERT_TRUE(!iter->Valid()); - delete iter; - } - - void TestBackwardScan(const std::vector& keys, - const KVMap& data) { - Iterator* iter = constructor_->NewIterator(); - ASSERT_TRUE(!iter->Valid()); - iter->SeekToLast(); - for (KVMap::const_reverse_iterator model_iter = data.rbegin(); - model_iter != data.rend(); - ++model_iter) { - ASSERT_EQ(ToString(data, model_iter), ToString(iter)); - iter->Prev(); - } - ASSERT_TRUE(!iter->Valid()); - delete iter; - } - - void TestRandomAccess(Random* rnd, - const std::vector& keys, - const KVMap& data) { - static const bool kVerbose = false; - Iterator* iter = constructor_->NewIterator(); - ASSERT_TRUE(!iter->Valid()); - KVMap::const_iterator model_iter = data.begin(); - if (kVerbose) fprintf(stderr, "---\n"); - for (int i = 0; i < 200; i++) { - const int toss = rnd->Uniform(5); - switch (toss) { - case 0: { - if (iter->Valid()) { - if (kVerbose) fprintf(stderr, "Next\n"); - iter->Next(); - ++model_iter; - ASSERT_EQ(ToString(data, model_iter), ToString(iter)); - } - break; - } - - case 1: { - if (kVerbose) fprintf(stderr, "SeekToFirst\n"); - iter->SeekToFirst(); - model_iter = data.begin(); - ASSERT_EQ(ToString(data, model_iter), ToString(iter)); - break; - } - - case 2: { - std::string key = PickRandomKey(rnd, keys); - model_iter = data.lower_bound(key); - if (kVerbose) fprintf(stderr, "Seek '%s'\n", - EscapeString(key).c_str()); - iter->Seek(Slice(key)); - ASSERT_EQ(ToString(data, model_iter), ToString(iter)); - break; - } - - case 3: { - if (iter->Valid()) { - if (kVerbose) fprintf(stderr, "Prev\n"); - iter->Prev(); - if (model_iter == data.begin()) { - model_iter = data.end(); // Wrap around to invalid value - } else { - --model_iter; - } - ASSERT_EQ(ToString(data, model_iter), ToString(iter)); - } - break; - } - - case 4: { - if (kVerbose) fprintf(stderr, "SeekToLast\n"); - iter->SeekToLast(); - if (keys.empty()) { - model_iter = data.end(); - } else { - std::string last = data.rbegin()->first; - model_iter = data.lower_bound(last); - } - ASSERT_EQ(ToString(data, model_iter), ToString(iter)); - break; - } - } - } - delete iter; - } - - std::string ToString(const KVMap& data, const KVMap::const_iterator& it) { - if (it == data.end()) { - return "END"; - } else { - return "'" + it->first + "->" + it->second + "'"; - } - } - - std::string ToString(const KVMap& data, - const KVMap::const_reverse_iterator& it) { - if (it == data.rend()) { - return "END"; - } else { - return "'" + it->first + "->" + it->second + "'"; - } - } - - std::string ToString(const Iterator* it) { - if (!it->Valid()) { - return "END"; - } else { - return "'" + it->key().ToString() + "->" + it->value().ToString() + "'"; - } - } - - std::string PickRandomKey(Random* rnd, const std::vector& keys) { - if (keys.empty()) { - return "foo"; - } else { - const int index = rnd->Uniform(keys.size()); - std::string result = keys[index]; - switch (rnd->Uniform(3)) { - case 0: - // Return an existing key - break; - case 1: { - // Attempt to return something smaller than an existing key - if (result.size() > 0 && result[result.size()-1] > '\0') { - result[result.size()-1]--; - } - break; - } - case 2: { - // Return something larger than an existing key - Increment(options_.comparator, &result); - break; - } - } - return result; - } - } - - // Returns NULL if not running against a DB - DB* db() const { return constructor_->db(); } - - private: - Options options_; - Constructor* constructor_; -}; - -// Test empty table/block. -TEST(Harness, Empty) { - for (int i = 0; i < kNumTestArgs; i++) { - Init(kTestArgList[i]); - Random rnd(test::RandomSeed() + 1); - Test(&rnd); - } -} - -// Special test for a block with no restart entries. The C++ leveldb -// code never generates such blocks, but the Java version of leveldb -// seems to. -TEST(Harness, ZeroRestartPointsInBlock) { - char data[sizeof(uint32_t)]; - memset(data, 0, sizeof(data)); - BlockContents contents; - contents.data = Slice(data, sizeof(data)); - contents.cachable = false; - contents.heap_allocated = false; - Block block(contents); - Iterator* iter = block.NewIterator(BytewiseComparator()); - iter->SeekToFirst(); - ASSERT_TRUE(!iter->Valid()); - iter->SeekToLast(); - ASSERT_TRUE(!iter->Valid()); - iter->Seek("foo"); - ASSERT_TRUE(!iter->Valid()); - delete iter; -} - -// Test the empty key -TEST(Harness, SimpleEmptyKey) { - for (int i = 0; i < kNumTestArgs; i++) { - Init(kTestArgList[i]); - Random rnd(test::RandomSeed() + 1); - Add("", "v"); - Test(&rnd); - } -} - -TEST(Harness, SimpleSingle) { - for (int i = 0; i < kNumTestArgs; i++) { - Init(kTestArgList[i]); - Random rnd(test::RandomSeed() + 2); - Add("abc", "v"); - Test(&rnd); - } -} - -TEST(Harness, SimpleMulti) { - for (int i = 0; i < kNumTestArgs; i++) { - Init(kTestArgList[i]); - Random rnd(test::RandomSeed() + 3); - Add("abc", "v"); - Add("abcd", "v"); - Add("ac", "v2"); - Test(&rnd); - } -} - -TEST(Harness, SimpleSpecialKey) { - for (int i = 0; i < kNumTestArgs; i++) { - Init(kTestArgList[i]); - Random rnd(test::RandomSeed() + 4); - Add("\xff\xff", "v3"); - Test(&rnd); - } -} - -TEST(Harness, Randomized) { - for (int i = 0; i < kNumTestArgs; i++) { - Init(kTestArgList[i]); - Random rnd(test::RandomSeed() + 5); - for (int num_entries = 0; num_entries < 2000; - num_entries += (num_entries < 50 ? 1 : 200)) { - if ((num_entries % 10) == 0) { - fprintf(stderr, "case %d of %d: num_entries = %d\n", - (i + 1), int(kNumTestArgs), num_entries); - } - for (int e = 0; e < num_entries; e++) { - std::string v; - Add(test::RandomKey(&rnd, rnd.Skewed(4)), - test::RandomString(&rnd, rnd.Skewed(5), &v).ToString()); - } - Test(&rnd); - } - } -} - -TEST(Harness, RandomizedLongDB) { - Random rnd(test::RandomSeed()); - TestArgs args = { DB_TEST, false, 16 }; - Init(args); - int num_entries = 100000; - for (int e = 0; e < num_entries; e++) { - std::string v; - Add(test::RandomKey(&rnd, rnd.Skewed(4)), - test::RandomString(&rnd, rnd.Skewed(5), &v).ToString()); - } - Test(&rnd); - - // We must have created enough data to force merging - int files = 0; - for (int level = 0; level < config::kNumLevels; level++) { - std::string value; - char name[100]; - snprintf(name, sizeof(name), "leveldb.num-files-at-level%d", level); - ASSERT_TRUE(db()->GetProperty(name, &value)); - files += atoi(value.c_str()); - } - ASSERT_GT(files, 0); -} - -class MemTableTest { }; - -TEST(MemTableTest, Simple) { - InternalKeyComparator cmp(BytewiseComparator()); - MemTable* memtable = new MemTable(cmp); - memtable->Ref(); - WriteBatch batch; - WriteBatchInternal::SetSequence(&batch, 100); - batch.Put(std::string("k1"), std::string("v1")); - batch.Put(std::string("k2"), std::string("v2")); - batch.Put(std::string("k3"), std::string("v3")); - batch.Put(std::string("largekey"), std::string("vlarge")); - ASSERT_TRUE(WriteBatchInternal::InsertInto(&batch, memtable).ok()); - - Iterator* iter = memtable->NewIterator(); - iter->SeekToFirst(); - while (iter->Valid()) { - fprintf(stderr, "key: '%s' -> '%s'\n", - iter->key().ToString().c_str(), - iter->value().ToString().c_str()); - iter->Next(); - } - - delete iter; - memtable->Unref(); -} - -static bool Between(uint64_t val, uint64_t low, uint64_t high) { - bool result = (val >= low) && (val <= high); - if (!result) { - fprintf(stderr, "Value %llu is not in range [%llu, %llu]\n", - (unsigned long long)(val), - (unsigned long long)(low), - (unsigned long long)(high)); - } - return result; -} - -class TableTest { }; - -TEST(TableTest, ApproximateOffsetOfPlain) { - TableConstructor c(BytewiseComparator()); - c.Add("k01", "hello"); - c.Add("k02", "hello2"); - c.Add("k03", std::string(10000, 'x')); - c.Add("k04", std::string(200000, 'x')); - c.Add("k05", std::string(300000, 'x')); - c.Add("k06", "hello3"); - c.Add("k07", std::string(100000, 'x')); - std::vector keys; - KVMap kvmap; - Options options; - options.block_size = 1024; - options.compression = kNoCompression; - c.Finish(options, &keys, &kvmap); - - ASSERT_TRUE(Between(c.ApproximateOffsetOf("abc"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k01"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k01a"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k02"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k03"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k04"), 10000, 11000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k04a"), 210000, 211000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k05"), 210000, 211000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k06"), 510000, 511000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k07"), 510000, 511000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("xyz"), 610000, 612000)); - -} - -static bool SnappyCompressionSupported() { - std::string out; - Slice in = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; - return port::Snappy_Compress(in.data(), in.size(), &out); -} - -TEST(TableTest, ApproximateOffsetOfCompressed) { - if (!SnappyCompressionSupported()) { - fprintf(stderr, "skipping compression tests\n"); - return; - } - - Random rnd(301); - TableConstructor c(BytewiseComparator()); - std::string tmp; - c.Add("k01", "hello"); - c.Add("k02", test::CompressibleString(&rnd, 0.25, 10000, &tmp)); - c.Add("k03", "hello3"); - c.Add("k04", test::CompressibleString(&rnd, 0.25, 10000, &tmp)); - std::vector keys; - KVMap kvmap; - Options options; - options.block_size = 1024; - options.compression = kSnappyCompression; - c.Finish(options, &keys, &kvmap); - - ASSERT_TRUE(Between(c.ApproximateOffsetOf("abc"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k01"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k02"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k03"), 2000, 3000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k04"), 2000, 3000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("xyz"), 4000, 6000)); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/table/two_level_iterator.cc b/leveldb-1.18/table/two_level_iterator.cc deleted file mode 100644 index 7822eba..0000000 --- a/leveldb-1.18/table/two_level_iterator.cc +++ /dev/null @@ -1,182 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "table/two_level_iterator.h" - -#include "leveldb/table.h" -#include "table/block.h" -#include "table/format.h" -#include "table/iterator_wrapper.h" - -namespace leveldb { - -namespace { - -typedef Iterator* (*BlockFunction)(void*, const ReadOptions&, const Slice&); - -class TwoLevelIterator: public Iterator { - public: - TwoLevelIterator( - Iterator* index_iter, - BlockFunction block_function, - void* arg, - const ReadOptions& options); - - virtual ~TwoLevelIterator(); - - virtual void Seek(const Slice& target); - virtual void SeekToFirst(); - virtual void SeekToLast(); - virtual void Next(); - virtual void Prev(); - - virtual bool Valid() const { - return data_iter_.Valid(); - } - virtual Slice key() const { - assert(Valid()); - return data_iter_.key(); - } - virtual Slice value() const { - assert(Valid()); - return data_iter_.value(); - } - virtual Status status() const { - // It'd be nice if status() returned a const Status& instead of a Status - if (!index_iter_.status().ok()) { - return index_iter_.status(); - } else if (data_iter_.iter() != NULL && !data_iter_.status().ok()) { - return data_iter_.status(); - } else { - return status_; - } - } - - private: - void SaveError(const Status& s) { - if (status_.ok() && !s.ok()) status_ = s; - } - void SkipEmptyDataBlocksForward(); - void SkipEmptyDataBlocksBackward(); - void SetDataIterator(Iterator* data_iter); - void InitDataBlock(); - - BlockFunction block_function_; - void* arg_; - const ReadOptions options_; - Status status_; - IteratorWrapper index_iter_; - IteratorWrapper data_iter_; // May be NULL - // If data_iter_ is non-NULL, then "data_block_handle_" holds the - // "index_value" passed to block_function_ to create the data_iter_. - std::string data_block_handle_; -}; - -TwoLevelIterator::TwoLevelIterator( - Iterator* index_iter, - BlockFunction block_function, - void* arg, - const ReadOptions& options) - : block_function_(block_function), - arg_(arg), - options_(options), - index_iter_(index_iter), - data_iter_(NULL) { -} - -TwoLevelIterator::~TwoLevelIterator() { -} - -void TwoLevelIterator::Seek(const Slice& target) { - index_iter_.Seek(target); - InitDataBlock(); - if (data_iter_.iter() != NULL) data_iter_.Seek(target); - SkipEmptyDataBlocksForward(); -} - -void TwoLevelIterator::SeekToFirst() { - index_iter_.SeekToFirst(); - InitDataBlock(); - if (data_iter_.iter() != NULL) data_iter_.SeekToFirst(); - SkipEmptyDataBlocksForward(); -} - -void TwoLevelIterator::SeekToLast() { - index_iter_.SeekToLast(); - InitDataBlock(); - if (data_iter_.iter() != NULL) data_iter_.SeekToLast(); - SkipEmptyDataBlocksBackward(); -} - -void TwoLevelIterator::Next() { - assert(Valid()); - data_iter_.Next(); - SkipEmptyDataBlocksForward(); -} - -void TwoLevelIterator::Prev() { - assert(Valid()); - data_iter_.Prev(); - SkipEmptyDataBlocksBackward(); -} - - -void TwoLevelIterator::SkipEmptyDataBlocksForward() { - while (data_iter_.iter() == NULL || !data_iter_.Valid()) { - // Move to next block - if (!index_iter_.Valid()) { - SetDataIterator(NULL); - return; - } - index_iter_.Next(); - InitDataBlock(); - if (data_iter_.iter() != NULL) data_iter_.SeekToFirst(); - } -} - -void TwoLevelIterator::SkipEmptyDataBlocksBackward() { - while (data_iter_.iter() == NULL || !data_iter_.Valid()) { - // Move to next block - if (!index_iter_.Valid()) { - SetDataIterator(NULL); - return; - } - index_iter_.Prev(); - InitDataBlock(); - if (data_iter_.iter() != NULL) data_iter_.SeekToLast(); - } -} - -void TwoLevelIterator::SetDataIterator(Iterator* data_iter) { - if (data_iter_.iter() != NULL) SaveError(data_iter_.status()); - data_iter_.Set(data_iter); -} - -void TwoLevelIterator::InitDataBlock() { - if (!index_iter_.Valid()) { - SetDataIterator(NULL); - } else { - Slice handle = index_iter_.value(); - if (data_iter_.iter() != NULL && handle.compare(data_block_handle_) == 0) { - // data_iter_ is already constructed with this iterator, so - // no need to change anything - } else { - Iterator* iter = (*block_function_)(arg_, options_, handle); - data_block_handle_.assign(handle.data(), handle.size()); - SetDataIterator(iter); - } - } -} - -} // namespace - -Iterator* NewTwoLevelIterator( - Iterator* index_iter, - BlockFunction block_function, - void* arg, - const ReadOptions& options) { - return new TwoLevelIterator(index_iter, block_function, arg, options); -} - -} // namespace leveldb diff --git a/leveldb-1.18/table/two_level_iterator.h b/leveldb-1.18/table/two_level_iterator.h deleted file mode 100644 index 629ca34..0000000 --- a/leveldb-1.18/table/two_level_iterator.h +++ /dev/null @@ -1,34 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_TABLE_TWO_LEVEL_ITERATOR_H_ -#define STORAGE_LEVELDB_TABLE_TWO_LEVEL_ITERATOR_H_ - -#include "leveldb/iterator.h" - -namespace leveldb { - -struct ReadOptions; - -// Return a new two level iterator. A two-level iterator contains an -// index iterator whose values point to a sequence of blocks where -// each block is itself a sequence of key,value pairs. The returned -// two-level iterator yields the concatenation of all key/value pairs -// in the sequence of blocks. Takes ownership of "index_iter" and -// will delete it when no longer needed. -// -// Uses a supplied function to convert an index_iter value into -// an iterator over the contents of the corresponding block. -extern Iterator* NewTwoLevelIterator( - Iterator* index_iter, - Iterator* (*block_function)( - void* arg, - const ReadOptions& options, - const Slice& index_value), - void* arg, - const ReadOptions& options); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_TABLE_TWO_LEVEL_ITERATOR_H_ diff --git a/leveldb-1.18/util/arena.cc b/leveldb-1.18/util/arena.cc deleted file mode 100644 index 9367f71..0000000 --- a/leveldb-1.18/util/arena.cc +++ /dev/null @@ -1,68 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/arena.h" -#include - -namespace leveldb { - -static const int kBlockSize = 4096; - -Arena::Arena() { - blocks_memory_ = 0; - alloc_ptr_ = NULL; // First allocation will allocate a block - alloc_bytes_remaining_ = 0; -} - -Arena::~Arena() { - for (size_t i = 0; i < blocks_.size(); i++) { - delete[] blocks_[i]; - } -} - -char* Arena::AllocateFallback(size_t bytes) { - if (bytes > kBlockSize / 4) { - // Object is more than a quarter of our block size. Allocate it separately - // to avoid wasting too much space in leftover bytes. - char* result = AllocateNewBlock(bytes); - return result; - } - - // We waste the remaining space in the current block. - alloc_ptr_ = AllocateNewBlock(kBlockSize); - alloc_bytes_remaining_ = kBlockSize; - - char* result = alloc_ptr_; - alloc_ptr_ += bytes; - alloc_bytes_remaining_ -= bytes; - return result; -} - -char* Arena::AllocateAligned(size_t bytes) { - const int align = (sizeof(void*) > 8) ? sizeof(void*) : 8; - assert((align & (align-1)) == 0); // Pointer size should be a power of 2 - size_t current_mod = reinterpret_cast(alloc_ptr_) & (align-1); - size_t slop = (current_mod == 0 ? 0 : align - current_mod); - size_t needed = bytes + slop; - char* result; - if (needed <= alloc_bytes_remaining_) { - result = alloc_ptr_ + slop; - alloc_ptr_ += needed; - alloc_bytes_remaining_ -= needed; - } else { - // AllocateFallback always returned aligned memory - result = AllocateFallback(bytes); - } - assert((reinterpret_cast(result) & (align-1)) == 0); - return result; -} - -char* Arena::AllocateNewBlock(size_t block_bytes) { - char* result = new char[block_bytes]; - blocks_memory_ += block_bytes; - blocks_.push_back(result); - return result; -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/arena.h b/leveldb-1.18/util/arena.h deleted file mode 100644 index 73bbf1c..0000000 --- a/leveldb-1.18/util/arena.h +++ /dev/null @@ -1,68 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_UTIL_ARENA_H_ -#define STORAGE_LEVELDB_UTIL_ARENA_H_ - -#include -#include -#include -#include - -namespace leveldb { - -class Arena { - public: - Arena(); - ~Arena(); - - // Return a pointer to a newly allocated memory block of "bytes" bytes. - char* Allocate(size_t bytes); - - // Allocate memory with the normal alignment guarantees provided by malloc - char* AllocateAligned(size_t bytes); - - // Returns an estimate of the total memory usage of data allocated - // by the arena (including space allocated but not yet used for user - // allocations). - size_t MemoryUsage() const { - return blocks_memory_ + blocks_.capacity() * sizeof(char*); - } - - private: - char* AllocateFallback(size_t bytes); - char* AllocateNewBlock(size_t block_bytes); - - // Allocation state - char* alloc_ptr_; - size_t alloc_bytes_remaining_; - - // Array of new[] allocated memory blocks - std::vector blocks_; - - // Bytes of memory in blocks allocated so far - size_t blocks_memory_; - - // No copying allowed - Arena(const Arena&); - void operator=(const Arena&); -}; - -inline char* Arena::Allocate(size_t bytes) { - // The semantics of what to return are a bit messy if we allow - // 0-byte allocations, so we disallow them here (we don't need - // them for our internal use). - assert(bytes > 0); - if (bytes <= alloc_bytes_remaining_) { - char* result = alloc_ptr_; - alloc_ptr_ += bytes; - alloc_bytes_remaining_ -= bytes; - return result; - } - return AllocateFallback(bytes); -} - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_ARENA_H_ diff --git a/leveldb-1.18/util/arena_test.cc b/leveldb-1.18/util/arena_test.cc deleted file mode 100644 index 58e870e..0000000 --- a/leveldb-1.18/util/arena_test.cc +++ /dev/null @@ -1,68 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/arena.h" - -#include "util/random.h" -#include "util/testharness.h" - -namespace leveldb { - -class ArenaTest { }; - -TEST(ArenaTest, Empty) { - Arena arena; -} - -TEST(ArenaTest, Simple) { - std::vector > allocated; - Arena arena; - const int N = 100000; - size_t bytes = 0; - Random rnd(301); - for (int i = 0; i < N; i++) { - size_t s; - if (i % (N / 10) == 0) { - s = i; - } else { - s = rnd.OneIn(4000) ? rnd.Uniform(6000) : - (rnd.OneIn(10) ? rnd.Uniform(100) : rnd.Uniform(20)); - } - if (s == 0) { - // Our arena disallows size 0 allocations. - s = 1; - } - char* r; - if (rnd.OneIn(10)) { - r = arena.AllocateAligned(s); - } else { - r = arena.Allocate(s); - } - - for (size_t b = 0; b < s; b++) { - // Fill the "i"th allocation with a known bit pattern - r[b] = i % 256; - } - bytes += s; - allocated.push_back(std::make_pair(s, r)); - ASSERT_GE(arena.MemoryUsage(), bytes); - if (i > N/10) { - ASSERT_LE(arena.MemoryUsage(), bytes * 1.10); - } - } - for (size_t i = 0; i < allocated.size(); i++) { - size_t num_bytes = allocated[i].first; - const char* p = allocated[i].second; - for (size_t b = 0; b < num_bytes; b++) { - // Check the "i"th allocation for the known bit pattern - ASSERT_EQ(int(p[b]) & 0xff, i % 256); - } - } -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/util/bloom.cc b/leveldb-1.18/util/bloom.cc deleted file mode 100644 index a27a2ac..0000000 --- a/leveldb-1.18/util/bloom.cc +++ /dev/null @@ -1,95 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/filter_policy.h" - -#include "leveldb/slice.h" -#include "util/hash.h" - -namespace leveldb { - -namespace { -static uint32_t BloomHash(const Slice& key) { - return Hash(key.data(), key.size(), 0xbc9f1d34); -} - -class BloomFilterPolicy : public FilterPolicy { - private: - size_t bits_per_key_; - size_t k_; - - public: - explicit BloomFilterPolicy(int bits_per_key) - : bits_per_key_(bits_per_key) { - // We intentionally round down to reduce probing cost a little bit - k_ = static_cast(bits_per_key * 0.69); // 0.69 =~ ln(2) - if (k_ < 1) k_ = 1; - if (k_ > 30) k_ = 30; - } - - virtual const char* Name() const { - return "leveldb.BuiltinBloomFilter2"; - } - - virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const { - // Compute bloom filter size (in both bits and bytes) - size_t bits = n * bits_per_key_; - - // For small n, we can see a very high false positive rate. Fix it - // by enforcing a minimum bloom filter length. - if (bits < 64) bits = 64; - - size_t bytes = (bits + 7) / 8; - bits = bytes * 8; - - const size_t init_size = dst->size(); - dst->resize(init_size + bytes, 0); - dst->push_back(static_cast(k_)); // Remember # of probes in filter - char* array = &(*dst)[init_size]; - for (size_t i = 0; i < n; i++) { - // Use double-hashing to generate a sequence of hash values. - // See analysis in [Kirsch,Mitzenmacher 2006]. - uint32_t h = BloomHash(keys[i]); - const uint32_t delta = (h >> 17) | (h << 15); // Rotate right 17 bits - for (size_t j = 0; j < k_; j++) { - const uint32_t bitpos = h % bits; - array[bitpos/8] |= (1 << (bitpos % 8)); - h += delta; - } - } - } - - virtual bool KeyMayMatch(const Slice& key, const Slice& bloom_filter) const { - const size_t len = bloom_filter.size(); - if (len < 2) return false; - - const char* array = bloom_filter.data(); - const size_t bits = (len - 1) * 8; - - // Use the encoded k so that we can read filters generated by - // bloom filters created using different parameters. - const size_t k = array[len-1]; - if (k > 30) { - // Reserved for potentially new encodings for short bloom filters. - // Consider it a match. - return true; - } - - uint32_t h = BloomHash(key); - const uint32_t delta = (h >> 17) | (h << 15); // Rotate right 17 bits - for (size_t j = 0; j < k; j++) { - const uint32_t bitpos = h % bits; - if ((array[bitpos/8] & (1 << (bitpos % 8))) == 0) return false; - h += delta; - } - return true; - } -}; -} - -const FilterPolicy* NewBloomFilterPolicy(int bits_per_key) { - return new BloomFilterPolicy(bits_per_key); -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/bloom_test.cc b/leveldb-1.18/util/bloom_test.cc deleted file mode 100644 index 77fb1b3..0000000 --- a/leveldb-1.18/util/bloom_test.cc +++ /dev/null @@ -1,161 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/filter_policy.h" - -#include "util/coding.h" -#include "util/logging.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace leveldb { - -static const int kVerbose = 1; - -static Slice Key(int i, char* buffer) { - EncodeFixed32(buffer, i); - return Slice(buffer, sizeof(uint32_t)); -} - -class BloomTest { - private: - const FilterPolicy* policy_; - std::string filter_; - std::vector keys_; - - public: - BloomTest() : policy_(NewBloomFilterPolicy(10)) { } - - ~BloomTest() { - delete policy_; - } - - void Reset() { - keys_.clear(); - filter_.clear(); - } - - void Add(const Slice& s) { - keys_.push_back(s.ToString()); - } - - void Build() { - std::vector key_slices; - for (size_t i = 0; i < keys_.size(); i++) { - key_slices.push_back(Slice(keys_[i])); - } - filter_.clear(); - policy_->CreateFilter(&key_slices[0], key_slices.size(), &filter_); - keys_.clear(); - if (kVerbose >= 2) DumpFilter(); - } - - size_t FilterSize() const { - return filter_.size(); - } - - void DumpFilter() { - fprintf(stderr, "F("); - for (size_t i = 0; i+1 < filter_.size(); i++) { - const unsigned int c = static_cast(filter_[i]); - for (int j = 0; j < 8; j++) { - fprintf(stderr, "%c", (c & (1 <KeyMayMatch(s, filter_); - } - - double FalsePositiveRate() { - char buffer[sizeof(int)]; - int result = 0; - for (int i = 0; i < 10000; i++) { - if (Matches(Key(i + 1000000000, buffer))) { - result++; - } - } - return result / 10000.0; - } -}; - -TEST(BloomTest, EmptyFilter) { - ASSERT_TRUE(! Matches("hello")); - ASSERT_TRUE(! Matches("world")); -} - -TEST(BloomTest, Small) { - Add("hello"); - Add("world"); - ASSERT_TRUE(Matches("hello")); - ASSERT_TRUE(Matches("world")); - ASSERT_TRUE(! Matches("x")); - ASSERT_TRUE(! Matches("foo")); -} - -static int NextLength(int length) { - if (length < 10) { - length += 1; - } else if (length < 100) { - length += 10; - } else if (length < 1000) { - length += 100; - } else { - length += 1000; - } - return length; -} - -TEST(BloomTest, VaryingLengths) { - char buffer[sizeof(int)]; - - // Count number of filters that significantly exceed the false positive rate - int mediocre_filters = 0; - int good_filters = 0; - - for (int length = 1; length <= 10000; length = NextLength(length)) { - Reset(); - for (int i = 0; i < length; i++) { - Add(Key(i, buffer)); - } - Build(); - - ASSERT_LE(FilterSize(), static_cast((length * 10 / 8) + 40)) - << length; - - // All added keys must match - for (int i = 0; i < length; i++) { - ASSERT_TRUE(Matches(Key(i, buffer))) - << "Length " << length << "; key " << i; - } - - // Check false positive rate - double rate = FalsePositiveRate(); - if (kVerbose >= 1) { - fprintf(stderr, "False positives: %5.2f%% @ length = %6d ; bytes = %6d\n", - rate*100.0, length, static_cast(FilterSize())); - } - ASSERT_LE(rate, 0.02); // Must not be over 2% - if (rate > 0.0125) mediocre_filters++; // Allowed, but not too often - else good_filters++; - } - if (kVerbose >= 1) { - fprintf(stderr, "Filters: %d good, %d mediocre\n", - good_filters, mediocre_filters); - } - ASSERT_LE(mediocre_filters, good_filters/5); -} - -// Different bits-per-byte - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/util/cache.cc b/leveldb-1.18/util/cache.cc deleted file mode 100644 index 8b197bc..0000000 --- a/leveldb-1.18/util/cache.cc +++ /dev/null @@ -1,325 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include -#include - -#include "leveldb/cache.h" -#include "port/port.h" -#include "util/hash.h" -#include "util/mutexlock.h" - -namespace leveldb { - -Cache::~Cache() { -} - -namespace { - -// LRU cache implementation - -// An entry is a variable length heap-allocated structure. Entries -// are kept in a circular doubly linked list ordered by access time. -struct LRUHandle { - void* value; - void (*deleter)(const Slice&, void* value); - LRUHandle* next_hash; - LRUHandle* next; - LRUHandle* prev; - size_t charge; // TODO(opt): Only allow uint32_t? - size_t key_length; - uint32_t refs; - uint32_t hash; // Hash of key(); used for fast sharding and comparisons - char key_data[1]; // Beginning of key - - Slice key() const { - // For cheaper lookups, we allow a temporary Handle object - // to store a pointer to a key in "value". - if (next == this) { - return *(reinterpret_cast(value)); - } else { - return Slice(key_data, key_length); - } - } -}; - -// We provide our own simple hash table since it removes a whole bunch -// of porting hacks and is also faster than some of the built-in hash -// table implementations in some of the compiler/runtime combinations -// we have tested. E.g., readrandom speeds up by ~5% over the g++ -// 4.4.3's builtin hashtable. -class HandleTable { - public: - HandleTable() : length_(0), elems_(0), list_(NULL) { Resize(); } - ~HandleTable() { delete[] list_; } - - LRUHandle* Lookup(const Slice& key, uint32_t hash) { - return *FindPointer(key, hash); - } - - LRUHandle* Insert(LRUHandle* h) { - LRUHandle** ptr = FindPointer(h->key(), h->hash); - LRUHandle* old = *ptr; - h->next_hash = (old == NULL ? NULL : old->next_hash); - *ptr = h; - if (old == NULL) { - ++elems_; - if (elems_ > length_) { - // Since each cache entry is fairly large, we aim for a small - // average linked list length (<= 1). - Resize(); - } - } - return old; - } - - LRUHandle* Remove(const Slice& key, uint32_t hash) { - LRUHandle** ptr = FindPointer(key, hash); - LRUHandle* result = *ptr; - if (result != NULL) { - *ptr = result->next_hash; - --elems_; - } - return result; - } - - private: - // The table consists of an array of buckets where each bucket is - // a linked list of cache entries that hash into the bucket. - uint32_t length_; - uint32_t elems_; - LRUHandle** list_; - - // Return a pointer to slot that points to a cache entry that - // matches key/hash. If there is no such cache entry, return a - // pointer to the trailing slot in the corresponding linked list. - LRUHandle** FindPointer(const Slice& key, uint32_t hash) { - LRUHandle** ptr = &list_[hash & (length_ - 1)]; - while (*ptr != NULL && - ((*ptr)->hash != hash || key != (*ptr)->key())) { - ptr = &(*ptr)->next_hash; - } - return ptr; - } - - void Resize() { - uint32_t new_length = 4; - while (new_length < elems_) { - new_length *= 2; - } - LRUHandle** new_list = new LRUHandle*[new_length]; - memset(new_list, 0, sizeof(new_list[0]) * new_length); - uint32_t count = 0; - for (uint32_t i = 0; i < length_; i++) { - LRUHandle* h = list_[i]; - while (h != NULL) { - LRUHandle* next = h->next_hash; - uint32_t hash = h->hash; - LRUHandle** ptr = &new_list[hash & (new_length - 1)]; - h->next_hash = *ptr; - *ptr = h; - h = next; - count++; - } - } - assert(elems_ == count); - delete[] list_; - list_ = new_list; - length_ = new_length; - } -}; - -// A single shard of sharded cache. -class LRUCache { - public: - LRUCache(); - ~LRUCache(); - - // Separate from constructor so caller can easily make an array of LRUCache - void SetCapacity(size_t capacity) { capacity_ = capacity; } - - // Like Cache methods, but with an extra "hash" parameter. - Cache::Handle* Insert(const Slice& key, uint32_t hash, - void* value, size_t charge, - void (*deleter)(const Slice& key, void* value)); - Cache::Handle* Lookup(const Slice& key, uint32_t hash); - void Release(Cache::Handle* handle); - void Erase(const Slice& key, uint32_t hash); - - private: - void LRU_Remove(LRUHandle* e); - void LRU_Append(LRUHandle* e); - void Unref(LRUHandle* e); - - // Initialized before use. - size_t capacity_; - - // mutex_ protects the following state. - port::Mutex mutex_; - size_t usage_; - - // Dummy head of LRU list. - // lru.prev is newest entry, lru.next is oldest entry. - LRUHandle lru_; - - HandleTable table_; -}; - -LRUCache::LRUCache() - : usage_(0) { - // Make empty circular linked list - lru_.next = &lru_; - lru_.prev = &lru_; -} - -LRUCache::~LRUCache() { - for (LRUHandle* e = lru_.next; e != &lru_; ) { - LRUHandle* next = e->next; - assert(e->refs == 1); // Error if caller has an unreleased handle - Unref(e); - e = next; - } -} - -void LRUCache::Unref(LRUHandle* e) { - assert(e->refs > 0); - e->refs--; - if (e->refs <= 0) { - usage_ -= e->charge; - (*e->deleter)(e->key(), e->value); - free(e); - } -} - -void LRUCache::LRU_Remove(LRUHandle* e) { - e->next->prev = e->prev; - e->prev->next = e->next; -} - -void LRUCache::LRU_Append(LRUHandle* e) { - // Make "e" newest entry by inserting just before lru_ - e->next = &lru_; - e->prev = lru_.prev; - e->prev->next = e; - e->next->prev = e; -} - -Cache::Handle* LRUCache::Lookup(const Slice& key, uint32_t hash) { - MutexLock l(&mutex_); - LRUHandle* e = table_.Lookup(key, hash); - if (e != NULL) { - e->refs++; - LRU_Remove(e); - LRU_Append(e); - } - return reinterpret_cast(e); -} - -void LRUCache::Release(Cache::Handle* handle) { - MutexLock l(&mutex_); - Unref(reinterpret_cast(handle)); -} - -Cache::Handle* LRUCache::Insert( - const Slice& key, uint32_t hash, void* value, size_t charge, - void (*deleter)(const Slice& key, void* value)) { - MutexLock l(&mutex_); - - LRUHandle* e = reinterpret_cast( - malloc(sizeof(LRUHandle)-1 + key.size())); - e->value = value; - e->deleter = deleter; - e->charge = charge; - e->key_length = key.size(); - e->hash = hash; - e->refs = 2; // One from LRUCache, one for the returned handle - memcpy(e->key_data, key.data(), key.size()); - LRU_Append(e); - usage_ += charge; - - LRUHandle* old = table_.Insert(e); - if (old != NULL) { - LRU_Remove(old); - Unref(old); - } - - while (usage_ > capacity_ && lru_.next != &lru_) { - LRUHandle* old = lru_.next; - LRU_Remove(old); - table_.Remove(old->key(), old->hash); - Unref(old); - } - - return reinterpret_cast(e); -} - -void LRUCache::Erase(const Slice& key, uint32_t hash) { - MutexLock l(&mutex_); - LRUHandle* e = table_.Remove(key, hash); - if (e != NULL) { - LRU_Remove(e); - Unref(e); - } -} - -static const int kNumShardBits = 4; -static const int kNumShards = 1 << kNumShardBits; - -class ShardedLRUCache : public Cache { - private: - LRUCache shard_[kNumShards]; - port::Mutex id_mutex_; - uint64_t last_id_; - - static inline uint32_t HashSlice(const Slice& s) { - return Hash(s.data(), s.size(), 0); - } - - static uint32_t Shard(uint32_t hash) { - return hash >> (32 - kNumShardBits); - } - - public: - explicit ShardedLRUCache(size_t capacity) - : last_id_(0) { - const size_t per_shard = (capacity + (kNumShards - 1)) / kNumShards; - for (int s = 0; s < kNumShards; s++) { - shard_[s].SetCapacity(per_shard); - } - } - virtual ~ShardedLRUCache() { } - virtual Handle* Insert(const Slice& key, void* value, size_t charge, - void (*deleter)(const Slice& key, void* value)) { - const uint32_t hash = HashSlice(key); - return shard_[Shard(hash)].Insert(key, hash, value, charge, deleter); - } - virtual Handle* Lookup(const Slice& key) { - const uint32_t hash = HashSlice(key); - return shard_[Shard(hash)].Lookup(key, hash); - } - virtual void Release(Handle* handle) { - LRUHandle* h = reinterpret_cast(handle); - shard_[Shard(h->hash)].Release(handle); - } - virtual void Erase(const Slice& key) { - const uint32_t hash = HashSlice(key); - shard_[Shard(hash)].Erase(key, hash); - } - virtual void* Value(Handle* handle) { - return reinterpret_cast(handle)->value; - } - virtual uint64_t NewId() { - MutexLock l(&id_mutex_); - return ++(last_id_); - } -}; - -} // end anonymous namespace - -Cache* NewLRUCache(size_t capacity) { - return new ShardedLRUCache(capacity); -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/cache_test.cc b/leveldb-1.18/util/cache_test.cc deleted file mode 100644 index 4371671..0000000 --- a/leveldb-1.18/util/cache_test.cc +++ /dev/null @@ -1,186 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/cache.h" - -#include -#include "util/coding.h" -#include "util/testharness.h" - -namespace leveldb { - -// Conversions between numeric keys/values and the types expected by Cache. -static std::string EncodeKey(int k) { - std::string result; - PutFixed32(&result, k); - return result; -} -static int DecodeKey(const Slice& k) { - assert(k.size() == 4); - return DecodeFixed32(k.data()); -} -static void* EncodeValue(uintptr_t v) { return reinterpret_cast(v); } -static int DecodeValue(void* v) { return reinterpret_cast(v); } - -class CacheTest { - public: - static CacheTest* current_; - - static void Deleter(const Slice& key, void* v) { - current_->deleted_keys_.push_back(DecodeKey(key)); - current_->deleted_values_.push_back(DecodeValue(v)); - } - - static const int kCacheSize = 1000; - std::vector deleted_keys_; - std::vector deleted_values_; - Cache* cache_; - - CacheTest() : cache_(NewLRUCache(kCacheSize)) { - current_ = this; - } - - ~CacheTest() { - delete cache_; - } - - int Lookup(int key) { - Cache::Handle* handle = cache_->Lookup(EncodeKey(key)); - const int r = (handle == NULL) ? -1 : DecodeValue(cache_->Value(handle)); - if (handle != NULL) { - cache_->Release(handle); - } - return r; - } - - void Insert(int key, int value, int charge = 1) { - cache_->Release(cache_->Insert(EncodeKey(key), EncodeValue(value), charge, - &CacheTest::Deleter)); - } - - void Erase(int key) { - cache_->Erase(EncodeKey(key)); - } -}; -CacheTest* CacheTest::current_; - -TEST(CacheTest, HitAndMiss) { - ASSERT_EQ(-1, Lookup(100)); - - Insert(100, 101); - ASSERT_EQ(101, Lookup(100)); - ASSERT_EQ(-1, Lookup(200)); - ASSERT_EQ(-1, Lookup(300)); - - Insert(200, 201); - ASSERT_EQ(101, Lookup(100)); - ASSERT_EQ(201, Lookup(200)); - ASSERT_EQ(-1, Lookup(300)); - - Insert(100, 102); - ASSERT_EQ(102, Lookup(100)); - ASSERT_EQ(201, Lookup(200)); - ASSERT_EQ(-1, Lookup(300)); - - ASSERT_EQ(1, deleted_keys_.size()); - ASSERT_EQ(100, deleted_keys_[0]); - ASSERT_EQ(101, deleted_values_[0]); -} - -TEST(CacheTest, Erase) { - Erase(200); - ASSERT_EQ(0, deleted_keys_.size()); - - Insert(100, 101); - Insert(200, 201); - Erase(100); - ASSERT_EQ(-1, Lookup(100)); - ASSERT_EQ(201, Lookup(200)); - ASSERT_EQ(1, deleted_keys_.size()); - ASSERT_EQ(100, deleted_keys_[0]); - ASSERT_EQ(101, deleted_values_[0]); - - Erase(100); - ASSERT_EQ(-1, Lookup(100)); - ASSERT_EQ(201, Lookup(200)); - ASSERT_EQ(1, deleted_keys_.size()); -} - -TEST(CacheTest, EntriesArePinned) { - Insert(100, 101); - Cache::Handle* h1 = cache_->Lookup(EncodeKey(100)); - ASSERT_EQ(101, DecodeValue(cache_->Value(h1))); - - Insert(100, 102); - Cache::Handle* h2 = cache_->Lookup(EncodeKey(100)); - ASSERT_EQ(102, DecodeValue(cache_->Value(h2))); - ASSERT_EQ(0, deleted_keys_.size()); - - cache_->Release(h1); - ASSERT_EQ(1, deleted_keys_.size()); - ASSERT_EQ(100, deleted_keys_[0]); - ASSERT_EQ(101, deleted_values_[0]); - - Erase(100); - ASSERT_EQ(-1, Lookup(100)); - ASSERT_EQ(1, deleted_keys_.size()); - - cache_->Release(h2); - ASSERT_EQ(2, deleted_keys_.size()); - ASSERT_EQ(100, deleted_keys_[1]); - ASSERT_EQ(102, deleted_values_[1]); -} - -TEST(CacheTest, EvictionPolicy) { - Insert(100, 101); - Insert(200, 201); - - // Frequently used entry must be kept around - for (int i = 0; i < kCacheSize + 100; i++) { - Insert(1000+i, 2000+i); - ASSERT_EQ(2000+i, Lookup(1000+i)); - ASSERT_EQ(101, Lookup(100)); - } - ASSERT_EQ(101, Lookup(100)); - ASSERT_EQ(-1, Lookup(200)); -} - -TEST(CacheTest, HeavyEntries) { - // Add a bunch of light and heavy entries and then count the combined - // size of items still in the cache, which must be approximately the - // same as the total capacity. - const int kLight = 1; - const int kHeavy = 10; - int added = 0; - int index = 0; - while (added < 2*kCacheSize) { - const int weight = (index & 1) ? kLight : kHeavy; - Insert(index, 1000+index, weight); - added += weight; - index++; - } - - int cached_weight = 0; - for (int i = 0; i < index; i++) { - const int weight = (i & 1 ? kLight : kHeavy); - int r = Lookup(i); - if (r >= 0) { - cached_weight += weight; - ASSERT_EQ(1000+i, r); - } - } - ASSERT_LE(cached_weight, kCacheSize + kCacheSize/10); -} - -TEST(CacheTest, NewId) { - uint64_t a = cache_->NewId(); - uint64_t b = cache_->NewId(); - ASSERT_NE(a, b); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/util/coding.cc b/leveldb-1.18/util/coding.cc deleted file mode 100644 index 21e3186..0000000 --- a/leveldb-1.18/util/coding.cc +++ /dev/null @@ -1,194 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/coding.h" - -namespace leveldb { - -void EncodeFixed32(char* buf, uint32_t value) { - if (port::kLittleEndian) { - memcpy(buf, &value, sizeof(value)); - } else { - buf[0] = value & 0xff; - buf[1] = (value >> 8) & 0xff; - buf[2] = (value >> 16) & 0xff; - buf[3] = (value >> 24) & 0xff; - } -} - -void EncodeFixed64(char* buf, uint64_t value) { - if (port::kLittleEndian) { - memcpy(buf, &value, sizeof(value)); - } else { - buf[0] = value & 0xff; - buf[1] = (value >> 8) & 0xff; - buf[2] = (value >> 16) & 0xff; - buf[3] = (value >> 24) & 0xff; - buf[4] = (value >> 32) & 0xff; - buf[5] = (value >> 40) & 0xff; - buf[6] = (value >> 48) & 0xff; - buf[7] = (value >> 56) & 0xff; - } -} - -void PutFixed32(std::string* dst, uint32_t value) { - char buf[sizeof(value)]; - EncodeFixed32(buf, value); - dst->append(buf, sizeof(buf)); -} - -void PutFixed64(std::string* dst, uint64_t value) { - char buf[sizeof(value)]; - EncodeFixed64(buf, value); - dst->append(buf, sizeof(buf)); -} - -char* EncodeVarint32(char* dst, uint32_t v) { - // Operate on characters as unsigneds - unsigned char* ptr = reinterpret_cast(dst); - static const int B = 128; - if (v < (1<<7)) { - *(ptr++) = v; - } else if (v < (1<<14)) { - *(ptr++) = v | B; - *(ptr++) = v>>7; - } else if (v < (1<<21)) { - *(ptr++) = v | B; - *(ptr++) = (v>>7) | B; - *(ptr++) = v>>14; - } else if (v < (1<<28)) { - *(ptr++) = v | B; - *(ptr++) = (v>>7) | B; - *(ptr++) = (v>>14) | B; - *(ptr++) = v>>21; - } else { - *(ptr++) = v | B; - *(ptr++) = (v>>7) | B; - *(ptr++) = (v>>14) | B; - *(ptr++) = (v>>21) | B; - *(ptr++) = v>>28; - } - return reinterpret_cast(ptr); -} - -void PutVarint32(std::string* dst, uint32_t v) { - char buf[5]; - char* ptr = EncodeVarint32(buf, v); - dst->append(buf, ptr - buf); -} - -char* EncodeVarint64(char* dst, uint64_t v) { - static const int B = 128; - unsigned char* ptr = reinterpret_cast(dst); - while (v >= B) { - *(ptr++) = (v & (B-1)) | B; - v >>= 7; - } - *(ptr++) = static_cast(v); - return reinterpret_cast(ptr); -} - -void PutVarint64(std::string* dst, uint64_t v) { - char buf[10]; - char* ptr = EncodeVarint64(buf, v); - dst->append(buf, ptr - buf); -} - -void PutLengthPrefixedSlice(std::string* dst, const Slice& value) { - PutVarint32(dst, value.size()); - dst->append(value.data(), value.size()); -} - -int VarintLength(uint64_t v) { - int len = 1; - while (v >= 128) { - v >>= 7; - len++; - } - return len; -} - -const char* GetVarint32PtrFallback(const char* p, - const char* limit, - uint32_t* value) { - uint32_t result = 0; - for (uint32_t shift = 0; shift <= 28 && p < limit; shift += 7) { - uint32_t byte = *(reinterpret_cast(p)); - p++; - if (byte & 128) { - // More bytes are present - result |= ((byte & 127) << shift); - } else { - result |= (byte << shift); - *value = result; - return reinterpret_cast(p); - } - } - return NULL; -} - -bool GetVarint32(Slice* input, uint32_t* value) { - const char* p = input->data(); - const char* limit = p + input->size(); - const char* q = GetVarint32Ptr(p, limit, value); - if (q == NULL) { - return false; - } else { - *input = Slice(q, limit - q); - return true; - } -} - -const char* GetVarint64Ptr(const char* p, const char* limit, uint64_t* value) { - uint64_t result = 0; - for (uint32_t shift = 0; shift <= 63 && p < limit; shift += 7) { - uint64_t byte = *(reinterpret_cast(p)); - p++; - if (byte & 128) { - // More bytes are present - result |= ((byte & 127) << shift); - } else { - result |= (byte << shift); - *value = result; - return reinterpret_cast(p); - } - } - return NULL; -} - -bool GetVarint64(Slice* input, uint64_t* value) { - const char* p = input->data(); - const char* limit = p + input->size(); - const char* q = GetVarint64Ptr(p, limit, value); - if (q == NULL) { - return false; - } else { - *input = Slice(q, limit - q); - return true; - } -} - -const char* GetLengthPrefixedSlice(const char* p, const char* limit, - Slice* result) { - uint32_t len; - p = GetVarint32Ptr(p, limit, &len); - if (p == NULL) return NULL; - if (p + len > limit) return NULL; - *result = Slice(p, len); - return p + len; -} - -bool GetLengthPrefixedSlice(Slice* input, Slice* result) { - uint32_t len; - if (GetVarint32(input, &len) && - input->size() >= len) { - *result = Slice(input->data(), len); - input->remove_prefix(len); - return true; - } else { - return false; - } -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/coding.h b/leveldb-1.18/util/coding.h deleted file mode 100644 index 3993c4a..0000000 --- a/leveldb-1.18/util/coding.h +++ /dev/null @@ -1,104 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Endian-neutral encoding: -// * Fixed-length numbers are encoded with least-significant byte first -// * In addition we support variable length "varint" encoding -// * Strings are encoded prefixed by their length in varint format - -#ifndef STORAGE_LEVELDB_UTIL_CODING_H_ -#define STORAGE_LEVELDB_UTIL_CODING_H_ - -#include -#include -#include -#include "leveldb/slice.h" -#include "port/port.h" - -namespace leveldb { - -// Standard Put... routines append to a string -extern void PutFixed32(std::string* dst, uint32_t value); -extern void PutFixed64(std::string* dst, uint64_t value); -extern void PutVarint32(std::string* dst, uint32_t value); -extern void PutVarint64(std::string* dst, uint64_t value); -extern void PutLengthPrefixedSlice(std::string* dst, const Slice& value); - -// Standard Get... routines parse a value from the beginning of a Slice -// and advance the slice past the parsed value. -extern bool GetVarint32(Slice* input, uint32_t* value); -extern bool GetVarint64(Slice* input, uint64_t* value); -extern bool GetLengthPrefixedSlice(Slice* input, Slice* result); - -// Pointer-based variants of GetVarint... These either store a value -// in *v and return a pointer just past the parsed value, or return -// NULL on error. These routines only look at bytes in the range -// [p..limit-1] -extern const char* GetVarint32Ptr(const char* p,const char* limit, uint32_t* v); -extern const char* GetVarint64Ptr(const char* p,const char* limit, uint64_t* v); - -// Returns the length of the varint32 or varint64 encoding of "v" -extern int VarintLength(uint64_t v); - -// Lower-level versions of Put... that write directly into a character buffer -// REQUIRES: dst has enough space for the value being written -extern void EncodeFixed32(char* dst, uint32_t value); -extern void EncodeFixed64(char* dst, uint64_t value); - -// Lower-level versions of Put... that write directly into a character buffer -// and return a pointer just past the last byte written. -// REQUIRES: dst has enough space for the value being written -extern char* EncodeVarint32(char* dst, uint32_t value); -extern char* EncodeVarint64(char* dst, uint64_t value); - -// Lower-level versions of Get... that read directly from a character buffer -// without any bounds checking. - -inline uint32_t DecodeFixed32(const char* ptr) { - if (port::kLittleEndian) { - // Load the raw bytes - uint32_t result; - memcpy(&result, ptr, sizeof(result)); // gcc optimizes this to a plain load - return result; - } else { - return ((static_cast(static_cast(ptr[0]))) - | (static_cast(static_cast(ptr[1])) << 8) - | (static_cast(static_cast(ptr[2])) << 16) - | (static_cast(static_cast(ptr[3])) << 24)); - } -} - -inline uint64_t DecodeFixed64(const char* ptr) { - if (port::kLittleEndian) { - // Load the raw bytes - uint64_t result; - memcpy(&result, ptr, sizeof(result)); // gcc optimizes this to a plain load - return result; - } else { - uint64_t lo = DecodeFixed32(ptr); - uint64_t hi = DecodeFixed32(ptr + 4); - return (hi << 32) | lo; - } -} - -// Internal routine for use by fallback path of GetVarint32Ptr -extern const char* GetVarint32PtrFallback(const char* p, - const char* limit, - uint32_t* value); -inline const char* GetVarint32Ptr(const char* p, - const char* limit, - uint32_t* value) { - if (p < limit) { - uint32_t result = *(reinterpret_cast(p)); - if ((result & 128) == 0) { - *value = result; - return p + 1; - } - } - return GetVarint32PtrFallback(p, limit, value); -} - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_CODING_H_ diff --git a/leveldb-1.18/util/coding_test.cc b/leveldb-1.18/util/coding_test.cc deleted file mode 100644 index 521541e..0000000 --- a/leveldb-1.18/util/coding_test.cc +++ /dev/null @@ -1,196 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/coding.h" - -#include "util/testharness.h" - -namespace leveldb { - -class Coding { }; - -TEST(Coding, Fixed32) { - std::string s; - for (uint32_t v = 0; v < 100000; v++) { - PutFixed32(&s, v); - } - - const char* p = s.data(); - for (uint32_t v = 0; v < 100000; v++) { - uint32_t actual = DecodeFixed32(p); - ASSERT_EQ(v, actual); - p += sizeof(uint32_t); - } -} - -TEST(Coding, Fixed64) { - std::string s; - for (int power = 0; power <= 63; power++) { - uint64_t v = static_cast(1) << power; - PutFixed64(&s, v - 1); - PutFixed64(&s, v + 0); - PutFixed64(&s, v + 1); - } - - const char* p = s.data(); - for (int power = 0; power <= 63; power++) { - uint64_t v = static_cast(1) << power; - uint64_t actual; - actual = DecodeFixed64(p); - ASSERT_EQ(v-1, actual); - p += sizeof(uint64_t); - - actual = DecodeFixed64(p); - ASSERT_EQ(v+0, actual); - p += sizeof(uint64_t); - - actual = DecodeFixed64(p); - ASSERT_EQ(v+1, actual); - p += sizeof(uint64_t); - } -} - -// Test that encoding routines generate little-endian encodings -TEST(Coding, EncodingOutput) { - std::string dst; - PutFixed32(&dst, 0x04030201); - ASSERT_EQ(4, dst.size()); - ASSERT_EQ(0x01, static_cast(dst[0])); - ASSERT_EQ(0x02, static_cast(dst[1])); - ASSERT_EQ(0x03, static_cast(dst[2])); - ASSERT_EQ(0x04, static_cast(dst[3])); - - dst.clear(); - PutFixed64(&dst, 0x0807060504030201ull); - ASSERT_EQ(8, dst.size()); - ASSERT_EQ(0x01, static_cast(dst[0])); - ASSERT_EQ(0x02, static_cast(dst[1])); - ASSERT_EQ(0x03, static_cast(dst[2])); - ASSERT_EQ(0x04, static_cast(dst[3])); - ASSERT_EQ(0x05, static_cast(dst[4])); - ASSERT_EQ(0x06, static_cast(dst[5])); - ASSERT_EQ(0x07, static_cast(dst[6])); - ASSERT_EQ(0x08, static_cast(dst[7])); -} - -TEST(Coding, Varint32) { - std::string s; - for (uint32_t i = 0; i < (32 * 32); i++) { - uint32_t v = (i / 32) << (i % 32); - PutVarint32(&s, v); - } - - const char* p = s.data(); - const char* limit = p + s.size(); - for (uint32_t i = 0; i < (32 * 32); i++) { - uint32_t expected = (i / 32) << (i % 32); - uint32_t actual; - const char* start = p; - p = GetVarint32Ptr(p, limit, &actual); - ASSERT_TRUE(p != NULL); - ASSERT_EQ(expected, actual); - ASSERT_EQ(VarintLength(actual), p - start); - } - ASSERT_EQ(p, s.data() + s.size()); -} - -TEST(Coding, Varint64) { - // Construct the list of values to check - std::vector values; - // Some special values - values.push_back(0); - values.push_back(100); - values.push_back(~static_cast(0)); - values.push_back(~static_cast(0) - 1); - for (uint32_t k = 0; k < 64; k++) { - // Test values near powers of two - const uint64_t power = 1ull << k; - values.push_back(power); - values.push_back(power-1); - values.push_back(power+1); - } - - std::string s; - for (size_t i = 0; i < values.size(); i++) { - PutVarint64(&s, values[i]); - } - - const char* p = s.data(); - const char* limit = p + s.size(); - for (size_t i = 0; i < values.size(); i++) { - ASSERT_TRUE(p < limit); - uint64_t actual; - const char* start = p; - p = GetVarint64Ptr(p, limit, &actual); - ASSERT_TRUE(p != NULL); - ASSERT_EQ(values[i], actual); - ASSERT_EQ(VarintLength(actual), p - start); - } - ASSERT_EQ(p, limit); - -} - -TEST(Coding, Varint32Overflow) { - uint32_t result; - std::string input("\x81\x82\x83\x84\x85\x11"); - ASSERT_TRUE(GetVarint32Ptr(input.data(), input.data() + input.size(), &result) - == NULL); -} - -TEST(Coding, Varint32Truncation) { - uint32_t large_value = (1u << 31) + 100; - std::string s; - PutVarint32(&s, large_value); - uint32_t result; - for (size_t len = 0; len < s.size() - 1; len++) { - ASSERT_TRUE(GetVarint32Ptr(s.data(), s.data() + len, &result) == NULL); - } - ASSERT_TRUE(GetVarint32Ptr(s.data(), s.data() + s.size(), &result) != NULL); - ASSERT_EQ(large_value, result); -} - -TEST(Coding, Varint64Overflow) { - uint64_t result; - std::string input("\x81\x82\x83\x84\x85\x81\x82\x83\x84\x85\x11"); - ASSERT_TRUE(GetVarint64Ptr(input.data(), input.data() + input.size(), &result) - == NULL); -} - -TEST(Coding, Varint64Truncation) { - uint64_t large_value = (1ull << 63) + 100ull; - std::string s; - PutVarint64(&s, large_value); - uint64_t result; - for (size_t len = 0; len < s.size() - 1; len++) { - ASSERT_TRUE(GetVarint64Ptr(s.data(), s.data() + len, &result) == NULL); - } - ASSERT_TRUE(GetVarint64Ptr(s.data(), s.data() + s.size(), &result) != NULL); - ASSERT_EQ(large_value, result); -} - -TEST(Coding, Strings) { - std::string s; - PutLengthPrefixedSlice(&s, Slice("")); - PutLengthPrefixedSlice(&s, Slice("foo")); - PutLengthPrefixedSlice(&s, Slice("bar")); - PutLengthPrefixedSlice(&s, Slice(std::string(200, 'x'))); - - Slice input(s); - Slice v; - ASSERT_TRUE(GetLengthPrefixedSlice(&input, &v)); - ASSERT_EQ("", v.ToString()); - ASSERT_TRUE(GetLengthPrefixedSlice(&input, &v)); - ASSERT_EQ("foo", v.ToString()); - ASSERT_TRUE(GetLengthPrefixedSlice(&input, &v)); - ASSERT_EQ("bar", v.ToString()); - ASSERT_TRUE(GetLengthPrefixedSlice(&input, &v)); - ASSERT_EQ(std::string(200, 'x'), v.ToString()); - ASSERT_EQ("", input.ToString()); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/util/comparator.cc b/leveldb-1.18/util/comparator.cc deleted file mode 100644 index 4b7b572..0000000 --- a/leveldb-1.18/util/comparator.cc +++ /dev/null @@ -1,81 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include -#include "leveldb/comparator.h" -#include "leveldb/slice.h" -#include "port/port.h" -#include "util/logging.h" - -namespace leveldb { - -Comparator::~Comparator() { } - -namespace { -class BytewiseComparatorImpl : public Comparator { - public: - BytewiseComparatorImpl() { } - - virtual const char* Name() const { - return "leveldb.BytewiseComparator"; - } - - virtual int Compare(const Slice& a, const Slice& b) const { - return a.compare(b); - } - - virtual void FindShortestSeparator( - std::string* start, - const Slice& limit) const { - // Find length of common prefix - size_t min_length = std::min(start->size(), limit.size()); - size_t diff_index = 0; - while ((diff_index < min_length) && - ((*start)[diff_index] == limit[diff_index])) { - diff_index++; - } - - if (diff_index >= min_length) { - // Do not shorten if one string is a prefix of the other - } else { - uint8_t diff_byte = static_cast((*start)[diff_index]); - if (diff_byte < static_cast(0xff) && - diff_byte + 1 < static_cast(limit[diff_index])) { - (*start)[diff_index]++; - start->resize(diff_index + 1); - assert(Compare(*start, limit) < 0); - } - } - } - - virtual void FindShortSuccessor(std::string* key) const { - // Find first character that can be incremented - size_t n = key->size(); - for (size_t i = 0; i < n; i++) { - const uint8_t byte = (*key)[i]; - if (byte != static_cast(0xff)) { - (*key)[i] = byte + 1; - key->resize(i+1); - return; - } - } - // *key is a run of 0xffs. Leave it alone. - } -}; -} // namespace - -static port::OnceType once = LEVELDB_ONCE_INIT; -static const Comparator* bytewise; - -static void InitModule() { - bytewise = new BytewiseComparatorImpl; -} - -const Comparator* BytewiseComparator() { - port::InitOnce(&once, InitModule); - return bytewise; -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/crc32c.cc b/leveldb-1.18/util/crc32c.cc deleted file mode 100644 index 6db9e77..0000000 --- a/leveldb-1.18/util/crc32c.cc +++ /dev/null @@ -1,332 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// A portable implementation of crc32c, optimized to handle -// four bytes at a time. - -#include "util/crc32c.h" - -#include -#include "util/coding.h" - -namespace leveldb { -namespace crc32c { - -static const uint32_t table0_[256] = { - 0x00000000, 0xf26b8303, 0xe13b70f7, 0x1350f3f4, - 0xc79a971f, 0x35f1141c, 0x26a1e7e8, 0xd4ca64eb, - 0x8ad958cf, 0x78b2dbcc, 0x6be22838, 0x9989ab3b, - 0x4d43cfd0, 0xbf284cd3, 0xac78bf27, 0x5e133c24, - 0x105ec76f, 0xe235446c, 0xf165b798, 0x030e349b, - 0xd7c45070, 0x25afd373, 0x36ff2087, 0xc494a384, - 0x9a879fa0, 0x68ec1ca3, 0x7bbcef57, 0x89d76c54, - 0x5d1d08bf, 0xaf768bbc, 0xbc267848, 0x4e4dfb4b, - 0x20bd8ede, 0xd2d60ddd, 0xc186fe29, 0x33ed7d2a, - 0xe72719c1, 0x154c9ac2, 0x061c6936, 0xf477ea35, - 0xaa64d611, 0x580f5512, 0x4b5fa6e6, 0xb93425e5, - 0x6dfe410e, 0x9f95c20d, 0x8cc531f9, 0x7eaeb2fa, - 0x30e349b1, 0xc288cab2, 0xd1d83946, 0x23b3ba45, - 0xf779deae, 0x05125dad, 0x1642ae59, 0xe4292d5a, - 0xba3a117e, 0x4851927d, 0x5b016189, 0xa96ae28a, - 0x7da08661, 0x8fcb0562, 0x9c9bf696, 0x6ef07595, - 0x417b1dbc, 0xb3109ebf, 0xa0406d4b, 0x522bee48, - 0x86e18aa3, 0x748a09a0, 0x67dafa54, 0x95b17957, - 0xcba24573, 0x39c9c670, 0x2a993584, 0xd8f2b687, - 0x0c38d26c, 0xfe53516f, 0xed03a29b, 0x1f682198, - 0x5125dad3, 0xa34e59d0, 0xb01eaa24, 0x42752927, - 0x96bf4dcc, 0x64d4cecf, 0x77843d3b, 0x85efbe38, - 0xdbfc821c, 0x2997011f, 0x3ac7f2eb, 0xc8ac71e8, - 0x1c661503, 0xee0d9600, 0xfd5d65f4, 0x0f36e6f7, - 0x61c69362, 0x93ad1061, 0x80fde395, 0x72966096, - 0xa65c047d, 0x5437877e, 0x4767748a, 0xb50cf789, - 0xeb1fcbad, 0x197448ae, 0x0a24bb5a, 0xf84f3859, - 0x2c855cb2, 0xdeeedfb1, 0xcdbe2c45, 0x3fd5af46, - 0x7198540d, 0x83f3d70e, 0x90a324fa, 0x62c8a7f9, - 0xb602c312, 0x44694011, 0x5739b3e5, 0xa55230e6, - 0xfb410cc2, 0x092a8fc1, 0x1a7a7c35, 0xe811ff36, - 0x3cdb9bdd, 0xceb018de, 0xdde0eb2a, 0x2f8b6829, - 0x82f63b78, 0x709db87b, 0x63cd4b8f, 0x91a6c88c, - 0x456cac67, 0xb7072f64, 0xa457dc90, 0x563c5f93, - 0x082f63b7, 0xfa44e0b4, 0xe9141340, 0x1b7f9043, - 0xcfb5f4a8, 0x3dde77ab, 0x2e8e845f, 0xdce5075c, - 0x92a8fc17, 0x60c37f14, 0x73938ce0, 0x81f80fe3, - 0x55326b08, 0xa759e80b, 0xb4091bff, 0x466298fc, - 0x1871a4d8, 0xea1a27db, 0xf94ad42f, 0x0b21572c, - 0xdfeb33c7, 0x2d80b0c4, 0x3ed04330, 0xccbbc033, - 0xa24bb5a6, 0x502036a5, 0x4370c551, 0xb11b4652, - 0x65d122b9, 0x97baa1ba, 0x84ea524e, 0x7681d14d, - 0x2892ed69, 0xdaf96e6a, 0xc9a99d9e, 0x3bc21e9d, - 0xef087a76, 0x1d63f975, 0x0e330a81, 0xfc588982, - 0xb21572c9, 0x407ef1ca, 0x532e023e, 0xa145813d, - 0x758fe5d6, 0x87e466d5, 0x94b49521, 0x66df1622, - 0x38cc2a06, 0xcaa7a905, 0xd9f75af1, 0x2b9cd9f2, - 0xff56bd19, 0x0d3d3e1a, 0x1e6dcdee, 0xec064eed, - 0xc38d26c4, 0x31e6a5c7, 0x22b65633, 0xd0ddd530, - 0x0417b1db, 0xf67c32d8, 0xe52cc12c, 0x1747422f, - 0x49547e0b, 0xbb3ffd08, 0xa86f0efc, 0x5a048dff, - 0x8ecee914, 0x7ca56a17, 0x6ff599e3, 0x9d9e1ae0, - 0xd3d3e1ab, 0x21b862a8, 0x32e8915c, 0xc083125f, - 0x144976b4, 0xe622f5b7, 0xf5720643, 0x07198540, - 0x590ab964, 0xab613a67, 0xb831c993, 0x4a5a4a90, - 0x9e902e7b, 0x6cfbad78, 0x7fab5e8c, 0x8dc0dd8f, - 0xe330a81a, 0x115b2b19, 0x020bd8ed, 0xf0605bee, - 0x24aa3f05, 0xd6c1bc06, 0xc5914ff2, 0x37faccf1, - 0x69e9f0d5, 0x9b8273d6, 0x88d28022, 0x7ab90321, - 0xae7367ca, 0x5c18e4c9, 0x4f48173d, 0xbd23943e, - 0xf36e6f75, 0x0105ec76, 0x12551f82, 0xe03e9c81, - 0x34f4f86a, 0xc69f7b69, 0xd5cf889d, 0x27a40b9e, - 0x79b737ba, 0x8bdcb4b9, 0x988c474d, 0x6ae7c44e, - 0xbe2da0a5, 0x4c4623a6, 0x5f16d052, 0xad7d5351 -}; -static const uint32_t table1_[256] = { - 0x00000000, 0x13a29877, 0x274530ee, 0x34e7a899, - 0x4e8a61dc, 0x5d28f9ab, 0x69cf5132, 0x7a6dc945, - 0x9d14c3b8, 0x8eb65bcf, 0xba51f356, 0xa9f36b21, - 0xd39ea264, 0xc03c3a13, 0xf4db928a, 0xe7790afd, - 0x3fc5f181, 0x2c6769f6, 0x1880c16f, 0x0b225918, - 0x714f905d, 0x62ed082a, 0x560aa0b3, 0x45a838c4, - 0xa2d13239, 0xb173aa4e, 0x859402d7, 0x96369aa0, - 0xec5b53e5, 0xfff9cb92, 0xcb1e630b, 0xd8bcfb7c, - 0x7f8be302, 0x6c297b75, 0x58ced3ec, 0x4b6c4b9b, - 0x310182de, 0x22a31aa9, 0x1644b230, 0x05e62a47, - 0xe29f20ba, 0xf13db8cd, 0xc5da1054, 0xd6788823, - 0xac154166, 0xbfb7d911, 0x8b507188, 0x98f2e9ff, - 0x404e1283, 0x53ec8af4, 0x670b226d, 0x74a9ba1a, - 0x0ec4735f, 0x1d66eb28, 0x298143b1, 0x3a23dbc6, - 0xdd5ad13b, 0xcef8494c, 0xfa1fe1d5, 0xe9bd79a2, - 0x93d0b0e7, 0x80722890, 0xb4958009, 0xa737187e, - 0xff17c604, 0xecb55e73, 0xd852f6ea, 0xcbf06e9d, - 0xb19da7d8, 0xa23f3faf, 0x96d89736, 0x857a0f41, - 0x620305bc, 0x71a19dcb, 0x45463552, 0x56e4ad25, - 0x2c896460, 0x3f2bfc17, 0x0bcc548e, 0x186eccf9, - 0xc0d23785, 0xd370aff2, 0xe797076b, 0xf4359f1c, - 0x8e585659, 0x9dface2e, 0xa91d66b7, 0xbabffec0, - 0x5dc6f43d, 0x4e646c4a, 0x7a83c4d3, 0x69215ca4, - 0x134c95e1, 0x00ee0d96, 0x3409a50f, 0x27ab3d78, - 0x809c2506, 0x933ebd71, 0xa7d915e8, 0xb47b8d9f, - 0xce1644da, 0xddb4dcad, 0xe9537434, 0xfaf1ec43, - 0x1d88e6be, 0x0e2a7ec9, 0x3acdd650, 0x296f4e27, - 0x53028762, 0x40a01f15, 0x7447b78c, 0x67e52ffb, - 0xbf59d487, 0xacfb4cf0, 0x981ce469, 0x8bbe7c1e, - 0xf1d3b55b, 0xe2712d2c, 0xd69685b5, 0xc5341dc2, - 0x224d173f, 0x31ef8f48, 0x050827d1, 0x16aabfa6, - 0x6cc776e3, 0x7f65ee94, 0x4b82460d, 0x5820de7a, - 0xfbc3faf9, 0xe861628e, 0xdc86ca17, 0xcf245260, - 0xb5499b25, 0xa6eb0352, 0x920cabcb, 0x81ae33bc, - 0x66d73941, 0x7575a136, 0x419209af, 0x523091d8, - 0x285d589d, 0x3bffc0ea, 0x0f186873, 0x1cbaf004, - 0xc4060b78, 0xd7a4930f, 0xe3433b96, 0xf0e1a3e1, - 0x8a8c6aa4, 0x992ef2d3, 0xadc95a4a, 0xbe6bc23d, - 0x5912c8c0, 0x4ab050b7, 0x7e57f82e, 0x6df56059, - 0x1798a91c, 0x043a316b, 0x30dd99f2, 0x237f0185, - 0x844819fb, 0x97ea818c, 0xa30d2915, 0xb0afb162, - 0xcac27827, 0xd960e050, 0xed8748c9, 0xfe25d0be, - 0x195cda43, 0x0afe4234, 0x3e19eaad, 0x2dbb72da, - 0x57d6bb9f, 0x447423e8, 0x70938b71, 0x63311306, - 0xbb8de87a, 0xa82f700d, 0x9cc8d894, 0x8f6a40e3, - 0xf50789a6, 0xe6a511d1, 0xd242b948, 0xc1e0213f, - 0x26992bc2, 0x353bb3b5, 0x01dc1b2c, 0x127e835b, - 0x68134a1e, 0x7bb1d269, 0x4f567af0, 0x5cf4e287, - 0x04d43cfd, 0x1776a48a, 0x23910c13, 0x30339464, - 0x4a5e5d21, 0x59fcc556, 0x6d1b6dcf, 0x7eb9f5b8, - 0x99c0ff45, 0x8a626732, 0xbe85cfab, 0xad2757dc, - 0xd74a9e99, 0xc4e806ee, 0xf00fae77, 0xe3ad3600, - 0x3b11cd7c, 0x28b3550b, 0x1c54fd92, 0x0ff665e5, - 0x759baca0, 0x663934d7, 0x52de9c4e, 0x417c0439, - 0xa6050ec4, 0xb5a796b3, 0x81403e2a, 0x92e2a65d, - 0xe88f6f18, 0xfb2df76f, 0xcfca5ff6, 0xdc68c781, - 0x7b5fdfff, 0x68fd4788, 0x5c1aef11, 0x4fb87766, - 0x35d5be23, 0x26772654, 0x12908ecd, 0x013216ba, - 0xe64b1c47, 0xf5e98430, 0xc10e2ca9, 0xd2acb4de, - 0xa8c17d9b, 0xbb63e5ec, 0x8f844d75, 0x9c26d502, - 0x449a2e7e, 0x5738b609, 0x63df1e90, 0x707d86e7, - 0x0a104fa2, 0x19b2d7d5, 0x2d557f4c, 0x3ef7e73b, - 0xd98eedc6, 0xca2c75b1, 0xfecbdd28, 0xed69455f, - 0x97048c1a, 0x84a6146d, 0xb041bcf4, 0xa3e32483 -}; -static const uint32_t table2_[256] = { - 0x00000000, 0xa541927e, 0x4f6f520d, 0xea2ec073, - 0x9edea41a, 0x3b9f3664, 0xd1b1f617, 0x74f06469, - 0x38513ec5, 0x9d10acbb, 0x773e6cc8, 0xd27ffeb6, - 0xa68f9adf, 0x03ce08a1, 0xe9e0c8d2, 0x4ca15aac, - 0x70a27d8a, 0xd5e3eff4, 0x3fcd2f87, 0x9a8cbdf9, - 0xee7cd990, 0x4b3d4bee, 0xa1138b9d, 0x045219e3, - 0x48f3434f, 0xedb2d131, 0x079c1142, 0xa2dd833c, - 0xd62de755, 0x736c752b, 0x9942b558, 0x3c032726, - 0xe144fb14, 0x4405696a, 0xae2ba919, 0x0b6a3b67, - 0x7f9a5f0e, 0xdadbcd70, 0x30f50d03, 0x95b49f7d, - 0xd915c5d1, 0x7c5457af, 0x967a97dc, 0x333b05a2, - 0x47cb61cb, 0xe28af3b5, 0x08a433c6, 0xade5a1b8, - 0x91e6869e, 0x34a714e0, 0xde89d493, 0x7bc846ed, - 0x0f382284, 0xaa79b0fa, 0x40577089, 0xe516e2f7, - 0xa9b7b85b, 0x0cf62a25, 0xe6d8ea56, 0x43997828, - 0x37691c41, 0x92288e3f, 0x78064e4c, 0xdd47dc32, - 0xc76580d9, 0x622412a7, 0x880ad2d4, 0x2d4b40aa, - 0x59bb24c3, 0xfcfab6bd, 0x16d476ce, 0xb395e4b0, - 0xff34be1c, 0x5a752c62, 0xb05bec11, 0x151a7e6f, - 0x61ea1a06, 0xc4ab8878, 0x2e85480b, 0x8bc4da75, - 0xb7c7fd53, 0x12866f2d, 0xf8a8af5e, 0x5de93d20, - 0x29195949, 0x8c58cb37, 0x66760b44, 0xc337993a, - 0x8f96c396, 0x2ad751e8, 0xc0f9919b, 0x65b803e5, - 0x1148678c, 0xb409f5f2, 0x5e273581, 0xfb66a7ff, - 0x26217bcd, 0x8360e9b3, 0x694e29c0, 0xcc0fbbbe, - 0xb8ffdfd7, 0x1dbe4da9, 0xf7908dda, 0x52d11fa4, - 0x1e704508, 0xbb31d776, 0x511f1705, 0xf45e857b, - 0x80aee112, 0x25ef736c, 0xcfc1b31f, 0x6a802161, - 0x56830647, 0xf3c29439, 0x19ec544a, 0xbcadc634, - 0xc85da25d, 0x6d1c3023, 0x8732f050, 0x2273622e, - 0x6ed23882, 0xcb93aafc, 0x21bd6a8f, 0x84fcf8f1, - 0xf00c9c98, 0x554d0ee6, 0xbf63ce95, 0x1a225ceb, - 0x8b277743, 0x2e66e53d, 0xc448254e, 0x6109b730, - 0x15f9d359, 0xb0b84127, 0x5a968154, 0xffd7132a, - 0xb3764986, 0x1637dbf8, 0xfc191b8b, 0x595889f5, - 0x2da8ed9c, 0x88e97fe2, 0x62c7bf91, 0xc7862def, - 0xfb850ac9, 0x5ec498b7, 0xb4ea58c4, 0x11abcaba, - 0x655baed3, 0xc01a3cad, 0x2a34fcde, 0x8f756ea0, - 0xc3d4340c, 0x6695a672, 0x8cbb6601, 0x29faf47f, - 0x5d0a9016, 0xf84b0268, 0x1265c21b, 0xb7245065, - 0x6a638c57, 0xcf221e29, 0x250cde5a, 0x804d4c24, - 0xf4bd284d, 0x51fcba33, 0xbbd27a40, 0x1e93e83e, - 0x5232b292, 0xf77320ec, 0x1d5de09f, 0xb81c72e1, - 0xccec1688, 0x69ad84f6, 0x83834485, 0x26c2d6fb, - 0x1ac1f1dd, 0xbf8063a3, 0x55aea3d0, 0xf0ef31ae, - 0x841f55c7, 0x215ec7b9, 0xcb7007ca, 0x6e3195b4, - 0x2290cf18, 0x87d15d66, 0x6dff9d15, 0xc8be0f6b, - 0xbc4e6b02, 0x190ff97c, 0xf321390f, 0x5660ab71, - 0x4c42f79a, 0xe90365e4, 0x032da597, 0xa66c37e9, - 0xd29c5380, 0x77ddc1fe, 0x9df3018d, 0x38b293f3, - 0x7413c95f, 0xd1525b21, 0x3b7c9b52, 0x9e3d092c, - 0xeacd6d45, 0x4f8cff3b, 0xa5a23f48, 0x00e3ad36, - 0x3ce08a10, 0x99a1186e, 0x738fd81d, 0xd6ce4a63, - 0xa23e2e0a, 0x077fbc74, 0xed517c07, 0x4810ee79, - 0x04b1b4d5, 0xa1f026ab, 0x4bdee6d8, 0xee9f74a6, - 0x9a6f10cf, 0x3f2e82b1, 0xd50042c2, 0x7041d0bc, - 0xad060c8e, 0x08479ef0, 0xe2695e83, 0x4728ccfd, - 0x33d8a894, 0x96993aea, 0x7cb7fa99, 0xd9f668e7, - 0x9557324b, 0x3016a035, 0xda386046, 0x7f79f238, - 0x0b899651, 0xaec8042f, 0x44e6c45c, 0xe1a75622, - 0xdda47104, 0x78e5e37a, 0x92cb2309, 0x378ab177, - 0x437ad51e, 0xe63b4760, 0x0c158713, 0xa954156d, - 0xe5f54fc1, 0x40b4ddbf, 0xaa9a1dcc, 0x0fdb8fb2, - 0x7b2bebdb, 0xde6a79a5, 0x3444b9d6, 0x91052ba8 -}; -static const uint32_t table3_[256] = { - 0x00000000, 0xdd45aab8, 0xbf672381, 0x62228939, - 0x7b2231f3, 0xa6679b4b, 0xc4451272, 0x1900b8ca, - 0xf64463e6, 0x2b01c95e, 0x49234067, 0x9466eadf, - 0x8d665215, 0x5023f8ad, 0x32017194, 0xef44db2c, - 0xe964b13d, 0x34211b85, 0x560392bc, 0x8b463804, - 0x924680ce, 0x4f032a76, 0x2d21a34f, 0xf06409f7, - 0x1f20d2db, 0xc2657863, 0xa047f15a, 0x7d025be2, - 0x6402e328, 0xb9474990, 0xdb65c0a9, 0x06206a11, - 0xd725148b, 0x0a60be33, 0x6842370a, 0xb5079db2, - 0xac072578, 0x71428fc0, 0x136006f9, 0xce25ac41, - 0x2161776d, 0xfc24ddd5, 0x9e0654ec, 0x4343fe54, - 0x5a43469e, 0x8706ec26, 0xe524651f, 0x3861cfa7, - 0x3e41a5b6, 0xe3040f0e, 0x81268637, 0x5c632c8f, - 0x45639445, 0x98263efd, 0xfa04b7c4, 0x27411d7c, - 0xc805c650, 0x15406ce8, 0x7762e5d1, 0xaa274f69, - 0xb327f7a3, 0x6e625d1b, 0x0c40d422, 0xd1057e9a, - 0xaba65fe7, 0x76e3f55f, 0x14c17c66, 0xc984d6de, - 0xd0846e14, 0x0dc1c4ac, 0x6fe34d95, 0xb2a6e72d, - 0x5de23c01, 0x80a796b9, 0xe2851f80, 0x3fc0b538, - 0x26c00df2, 0xfb85a74a, 0x99a72e73, 0x44e284cb, - 0x42c2eeda, 0x9f874462, 0xfda5cd5b, 0x20e067e3, - 0x39e0df29, 0xe4a57591, 0x8687fca8, 0x5bc25610, - 0xb4868d3c, 0x69c32784, 0x0be1aebd, 0xd6a40405, - 0xcfa4bccf, 0x12e11677, 0x70c39f4e, 0xad8635f6, - 0x7c834b6c, 0xa1c6e1d4, 0xc3e468ed, 0x1ea1c255, - 0x07a17a9f, 0xdae4d027, 0xb8c6591e, 0x6583f3a6, - 0x8ac7288a, 0x57828232, 0x35a00b0b, 0xe8e5a1b3, - 0xf1e51979, 0x2ca0b3c1, 0x4e823af8, 0x93c79040, - 0x95e7fa51, 0x48a250e9, 0x2a80d9d0, 0xf7c57368, - 0xeec5cba2, 0x3380611a, 0x51a2e823, 0x8ce7429b, - 0x63a399b7, 0xbee6330f, 0xdcc4ba36, 0x0181108e, - 0x1881a844, 0xc5c402fc, 0xa7e68bc5, 0x7aa3217d, - 0x52a0c93f, 0x8fe56387, 0xedc7eabe, 0x30824006, - 0x2982f8cc, 0xf4c75274, 0x96e5db4d, 0x4ba071f5, - 0xa4e4aad9, 0x79a10061, 0x1b838958, 0xc6c623e0, - 0xdfc69b2a, 0x02833192, 0x60a1b8ab, 0xbde41213, - 0xbbc47802, 0x6681d2ba, 0x04a35b83, 0xd9e6f13b, - 0xc0e649f1, 0x1da3e349, 0x7f816a70, 0xa2c4c0c8, - 0x4d801be4, 0x90c5b15c, 0xf2e73865, 0x2fa292dd, - 0x36a22a17, 0xebe780af, 0x89c50996, 0x5480a32e, - 0x8585ddb4, 0x58c0770c, 0x3ae2fe35, 0xe7a7548d, - 0xfea7ec47, 0x23e246ff, 0x41c0cfc6, 0x9c85657e, - 0x73c1be52, 0xae8414ea, 0xcca69dd3, 0x11e3376b, - 0x08e38fa1, 0xd5a62519, 0xb784ac20, 0x6ac10698, - 0x6ce16c89, 0xb1a4c631, 0xd3864f08, 0x0ec3e5b0, - 0x17c35d7a, 0xca86f7c2, 0xa8a47efb, 0x75e1d443, - 0x9aa50f6f, 0x47e0a5d7, 0x25c22cee, 0xf8878656, - 0xe1873e9c, 0x3cc29424, 0x5ee01d1d, 0x83a5b7a5, - 0xf90696d8, 0x24433c60, 0x4661b559, 0x9b241fe1, - 0x8224a72b, 0x5f610d93, 0x3d4384aa, 0xe0062e12, - 0x0f42f53e, 0xd2075f86, 0xb025d6bf, 0x6d607c07, - 0x7460c4cd, 0xa9256e75, 0xcb07e74c, 0x16424df4, - 0x106227e5, 0xcd278d5d, 0xaf050464, 0x7240aedc, - 0x6b401616, 0xb605bcae, 0xd4273597, 0x09629f2f, - 0xe6264403, 0x3b63eebb, 0x59416782, 0x8404cd3a, - 0x9d0475f0, 0x4041df48, 0x22635671, 0xff26fcc9, - 0x2e238253, 0xf36628eb, 0x9144a1d2, 0x4c010b6a, - 0x5501b3a0, 0x88441918, 0xea669021, 0x37233a99, - 0xd867e1b5, 0x05224b0d, 0x6700c234, 0xba45688c, - 0xa345d046, 0x7e007afe, 0x1c22f3c7, 0xc167597f, - 0xc747336e, 0x1a0299d6, 0x782010ef, 0xa565ba57, - 0xbc65029d, 0x6120a825, 0x0302211c, 0xde478ba4, - 0x31035088, 0xec46fa30, 0x8e647309, 0x5321d9b1, - 0x4a21617b, 0x9764cbc3, 0xf54642fa, 0x2803e842 -}; - -// Used to fetch a naturally-aligned 32-bit word in little endian byte-order -static inline uint32_t LE_LOAD32(const uint8_t *p) { - return DecodeFixed32(reinterpret_cast(p)); -} - -uint32_t Extend(uint32_t crc, const char* buf, size_t size) { - const uint8_t *p = reinterpret_cast(buf); - const uint8_t *e = p + size; - uint32_t l = crc ^ 0xffffffffu; - -#define STEP1 do { \ - int c = (l & 0xff) ^ *p++; \ - l = table0_[c] ^ (l >> 8); \ -} while (0) -#define STEP4 do { \ - uint32_t c = l ^ LE_LOAD32(p); \ - p += 4; \ - l = table3_[c & 0xff] ^ \ - table2_[(c >> 8) & 0xff] ^ \ - table1_[(c >> 16) & 0xff] ^ \ - table0_[c >> 24]; \ -} while (0) - - // Point x at first 4-byte aligned byte in string. This might be - // just past the end of the string. - const uintptr_t pval = reinterpret_cast(p); - const uint8_t* x = reinterpret_cast(((pval + 3) >> 2) << 2); - if (x <= e) { - // Process bytes until finished or p is 4-byte aligned - while (p != x) { - STEP1; - } - } - // Process bytes 16 at a time - while ((e-p) >= 16) { - STEP4; STEP4; STEP4; STEP4; - } - // Process bytes 4 at a time - while ((e-p) >= 4) { - STEP4; - } - // Process the last few bytes - while (p != e) { - STEP1; - } -#undef STEP4 -#undef STEP1 - return l ^ 0xffffffffu; -} - -} // namespace crc32c -} // namespace leveldb diff --git a/leveldb-1.18/util/crc32c.h b/leveldb-1.18/util/crc32c.h deleted file mode 100644 index 1d7e5c0..0000000 --- a/leveldb-1.18/util/crc32c.h +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_UTIL_CRC32C_H_ -#define STORAGE_LEVELDB_UTIL_CRC32C_H_ - -#include -#include - -namespace leveldb { -namespace crc32c { - -// Return the crc32c of concat(A, data[0,n-1]) where init_crc is the -// crc32c of some string A. Extend() is often used to maintain the -// crc32c of a stream of data. -extern uint32_t Extend(uint32_t init_crc, const char* data, size_t n); - -// Return the crc32c of data[0,n-1] -inline uint32_t Value(const char* data, size_t n) { - return Extend(0, data, n); -} - -static const uint32_t kMaskDelta = 0xa282ead8ul; - -// Return a masked representation of crc. -// -// Motivation: it is problematic to compute the CRC of a string that -// contains embedded CRCs. Therefore we recommend that CRCs stored -// somewhere (e.g., in files) should be masked before being stored. -inline uint32_t Mask(uint32_t crc) { - // Rotate right by 15 bits and add a constant. - return ((crc >> 15) | (crc << 17)) + kMaskDelta; -} - -// Return the crc whose masked representation is masked_crc. -inline uint32_t Unmask(uint32_t masked_crc) { - uint32_t rot = masked_crc - kMaskDelta; - return ((rot >> 17) | (rot << 15)); -} - -} // namespace crc32c -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_CRC32C_H_ diff --git a/leveldb-1.18/util/crc32c_test.cc b/leveldb-1.18/util/crc32c_test.cc deleted file mode 100644 index 4b957ee..0000000 --- a/leveldb-1.18/util/crc32c_test.cc +++ /dev/null @@ -1,72 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/crc32c.h" -#include "util/testharness.h" - -namespace leveldb { -namespace crc32c { - -class CRC { }; - -TEST(CRC, StandardResults) { - // From rfc3720 section B.4. - char buf[32]; - - memset(buf, 0, sizeof(buf)); - ASSERT_EQ(0x8a9136aa, Value(buf, sizeof(buf))); - - memset(buf, 0xff, sizeof(buf)); - ASSERT_EQ(0x62a8ab43, Value(buf, sizeof(buf))); - - for (int i = 0; i < 32; i++) { - buf[i] = i; - } - ASSERT_EQ(0x46dd794e, Value(buf, sizeof(buf))); - - for (int i = 0; i < 32; i++) { - buf[i] = 31 - i; - } - ASSERT_EQ(0x113fdb5c, Value(buf, sizeof(buf))); - - unsigned char data[48] = { - 0x01, 0xc0, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x14, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x04, 0x00, - 0x00, 0x00, 0x00, 0x14, - 0x00, 0x00, 0x00, 0x18, - 0x28, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x02, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - }; - ASSERT_EQ(0xd9963a56, Value(reinterpret_cast(data), sizeof(data))); -} - -TEST(CRC, Values) { - ASSERT_NE(Value("a", 1), Value("foo", 3)); -} - -TEST(CRC, Extend) { - ASSERT_EQ(Value("hello world", 11), - Extend(Value("hello ", 6), "world", 5)); -} - -TEST(CRC, Mask) { - uint32_t crc = Value("foo", 3); - ASSERT_NE(crc, Mask(crc)); - ASSERT_NE(crc, Mask(Mask(crc))); - ASSERT_EQ(crc, Unmask(Mask(crc))); - ASSERT_EQ(crc, Unmask(Unmask(Mask(Mask(crc))))); -} - -} // namespace crc32c -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/util/env.cc b/leveldb-1.18/util/env.cc deleted file mode 100644 index c2600e9..0000000 --- a/leveldb-1.18/util/env.cc +++ /dev/null @@ -1,96 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/env.h" - -namespace leveldb { - -Env::~Env() { -} - -SequentialFile::~SequentialFile() { -} - -RandomAccessFile::~RandomAccessFile() { -} - -WritableFile::~WritableFile() { -} - -Logger::~Logger() { -} - -FileLock::~FileLock() { -} - -void Log(Logger* info_log, const char* format, ...) { - if (info_log != NULL) { - va_list ap; - va_start(ap, format); - info_log->Logv(format, ap); - va_end(ap); - } -} - -static Status DoWriteStringToFile(Env* env, const Slice& data, - const std::string& fname, - bool should_sync) { - WritableFile* file; - Status s = env->NewWritableFile(fname, &file); - if (!s.ok()) { - return s; - } - s = file->Append(data); - if (s.ok() && should_sync) { - s = file->Sync(); - } - if (s.ok()) { - s = file->Close(); - } - delete file; // Will auto-close if we did not close above - if (!s.ok()) { - env->DeleteFile(fname); - } - return s; -} - -Status WriteStringToFile(Env* env, const Slice& data, - const std::string& fname) { - return DoWriteStringToFile(env, data, fname, false); -} - -Status WriteStringToFileSync(Env* env, const Slice& data, - const std::string& fname) { - return DoWriteStringToFile(env, data, fname, true); -} - -Status ReadFileToString(Env* env, const std::string& fname, std::string* data) { - data->clear(); - SequentialFile* file; - Status s = env->NewSequentialFile(fname, &file); - if (!s.ok()) { - return s; - } - static const int kBufferSize = 8192; - char* space = new char[kBufferSize]; - while (true) { - Slice fragment; - s = file->Read(kBufferSize, &fragment, space); - if (!s.ok()) { - break; - } - data->append(fragment.data(), fragment.size()); - if (fragment.empty()) { - break; - } - } - delete[] space; - delete file; - return s; -} - -EnvWrapper::~EnvWrapper() { -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/env_posix.cc b/leveldb-1.18/util/env_posix.cc deleted file mode 100644 index ad56131..0000000 --- a/leveldb-1.18/util/env_posix.cc +++ /dev/null @@ -1,605 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "leveldb/env.h" -#include "leveldb/slice.h" -#include "port/port.h" -#include "util/logging.h" -#include "util/mutexlock.h" -#include "util/posix_logger.h" - -namespace leveldb { - -namespace { - -static Status IOError(const std::string& context, int err_number) { - return Status::IOError(context, strerror(err_number)); -} - -class PosixSequentialFile: public SequentialFile { - private: - std::string filename_; - FILE* file_; - - public: - PosixSequentialFile(const std::string& fname, FILE* f) - : filename_(fname), file_(f) { } - virtual ~PosixSequentialFile() { fclose(file_); } - - virtual Status Read(size_t n, Slice* result, char* scratch) { - Status s; - size_t r = fread_unlocked(scratch, 1, n, file_); - *result = Slice(scratch, r); - if (r < n) { - if (feof(file_)) { - // We leave status as ok if we hit the end of the file - } else { - // A partial read with an error: return a non-ok status - s = IOError(filename_, errno); - } - } - return s; - } - - virtual Status Skip(uint64_t n) { - if (fseek(file_, n, SEEK_CUR)) { - return IOError(filename_, errno); - } - return Status::OK(); - } -}; - -// pread() based random-access -class PosixRandomAccessFile: public RandomAccessFile { - private: - std::string filename_; - int fd_; - - public: - PosixRandomAccessFile(const std::string& fname, int fd) - : filename_(fname), fd_(fd) { } - virtual ~PosixRandomAccessFile() { close(fd_); } - - virtual Status Read(uint64_t offset, size_t n, Slice* result, - char* scratch) const { - Status s; - ssize_t r = pread(fd_, scratch, n, static_cast(offset)); - *result = Slice(scratch, (r < 0) ? 0 : r); - if (r < 0) { - // An error: return a non-ok status - s = IOError(filename_, errno); - } - return s; - } -}; - -// Helper class to limit mmap file usage so that we do not end up -// running out virtual memory or running into kernel performance -// problems for very large databases. -class MmapLimiter { - public: - // Up to 1000 mmaps for 64-bit binaries; none for smaller pointer sizes. - MmapLimiter() { - SetAllowed(sizeof(void*) >= 8 ? 1000 : 0); - } - - // If another mmap slot is available, acquire it and return true. - // Else return false. - bool Acquire() { - if (GetAllowed() <= 0) { - return false; - } - MutexLock l(&mu_); - intptr_t x = GetAllowed(); - if (x <= 0) { - return false; - } else { - SetAllowed(x - 1); - return true; - } - } - - // Release a slot acquired by a previous call to Acquire() that returned true. - void Release() { - MutexLock l(&mu_); - SetAllowed(GetAllowed() + 1); - } - - private: - port::Mutex mu_; - port::AtomicPointer allowed_; - - intptr_t GetAllowed() const { - return reinterpret_cast(allowed_.Acquire_Load()); - } - - // REQUIRES: mu_ must be held - void SetAllowed(intptr_t v) { - allowed_.Release_Store(reinterpret_cast(v)); - } - - MmapLimiter(const MmapLimiter&); - void operator=(const MmapLimiter&); -}; - -// mmap() based random-access -class PosixMmapReadableFile: public RandomAccessFile { - private: - std::string filename_; - void* mmapped_region_; - size_t length_; - MmapLimiter* limiter_; - - public: - // base[0,length-1] contains the mmapped contents of the file. - PosixMmapReadableFile(const std::string& fname, void* base, size_t length, - MmapLimiter* limiter) - : filename_(fname), mmapped_region_(base), length_(length), - limiter_(limiter) { - } - - virtual ~PosixMmapReadableFile() { - munmap(mmapped_region_, length_); - limiter_->Release(); - } - - virtual Status Read(uint64_t offset, size_t n, Slice* result, - char* scratch) const { - Status s; - if (offset + n > length_) { - *result = Slice(); - s = IOError(filename_, EINVAL); - } else { - *result = Slice(reinterpret_cast(mmapped_region_) + offset, n); - } - return s; - } -}; - -class PosixWritableFile : public WritableFile { - private: - std::string filename_; - FILE* file_; - - public: - PosixWritableFile(const std::string& fname, FILE* f) - : filename_(fname), file_(f) { } - - ~PosixWritableFile() { - if (file_ != NULL) { - // Ignoring any potential errors - fclose(file_); - } - } - - virtual Status Append(const Slice& data) { - size_t r = fwrite_unlocked(data.data(), 1, data.size(), file_); - if (r != data.size()) { - return IOError(filename_, errno); - } - return Status::OK(); - } - - virtual Status Close() { - Status result; - if (fclose(file_) != 0) { - result = IOError(filename_, errno); - } - file_ = NULL; - return result; - } - - virtual Status Flush() { - if (fflush_unlocked(file_) != 0) { - return IOError(filename_, errno); - } - return Status::OK(); - } - - Status SyncDirIfManifest() { - const char* f = filename_.c_str(); - const char* sep = strrchr(f, '/'); - Slice basename; - std::string dir; - if (sep == NULL) { - dir = "."; - basename = f; - } else { - dir = std::string(f, sep - f); - basename = sep + 1; - } - Status s; - if (basename.starts_with("MANIFEST")) { - int fd = open(dir.c_str(), O_RDONLY); - if (fd < 0) { - s = IOError(dir, errno); - } else { - if (fsync(fd) < 0) { - s = IOError(dir, errno); - } - close(fd); - } - } - return s; - } - - virtual Status Sync() { - // Ensure new files referred to by the manifest are in the filesystem. - Status s = SyncDirIfManifest(); - if (!s.ok()) { - return s; - } - if (fflush_unlocked(file_) != 0 || - fdatasync(fileno(file_)) != 0) { - s = Status::IOError(filename_, strerror(errno)); - } - return s; - } -}; - -static int LockOrUnlock(int fd, bool lock) { - errno = 0; - struct flock f; - memset(&f, 0, sizeof(f)); - f.l_type = (lock ? F_WRLCK : F_UNLCK); - f.l_whence = SEEK_SET; - f.l_start = 0; - f.l_len = 0; // Lock/unlock entire file - return fcntl(fd, F_SETLK, &f); -} - -class PosixFileLock : public FileLock { - public: - int fd_; - std::string name_; -}; - -// Set of locked files. We keep a separate set instead of just -// relying on fcntrl(F_SETLK) since fcntl(F_SETLK) does not provide -// any protection against multiple uses from the same process. -class PosixLockTable { - private: - port::Mutex mu_; - std::set locked_files_; - public: - bool Insert(const std::string& fname) { - MutexLock l(&mu_); - return locked_files_.insert(fname).second; - } - void Remove(const std::string& fname) { - MutexLock l(&mu_); - locked_files_.erase(fname); - } -}; - -class PosixEnv : public Env { - public: - PosixEnv(); - virtual ~PosixEnv() { - char msg[] = "Destroying Env::Default()\n"; - fwrite(msg, 1, sizeof(msg), stderr); - abort(); - } - - virtual Status NewSequentialFile(const std::string& fname, - SequentialFile** result) { - FILE* f = fopen(fname.c_str(), "r"); - if (f == NULL) { - *result = NULL; - return IOError(fname, errno); - } else { - *result = new PosixSequentialFile(fname, f); - return Status::OK(); - } - } - - virtual Status NewRandomAccessFile(const std::string& fname, - RandomAccessFile** result) { - *result = NULL; - Status s; - int fd = open(fname.c_str(), O_RDONLY); - if (fd < 0) { - s = IOError(fname, errno); - } else if (mmap_limit_.Acquire()) { - uint64_t size; - s = GetFileSize(fname, &size); - if (s.ok()) { - void* base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0); - if (base != MAP_FAILED) { - *result = new PosixMmapReadableFile(fname, base, size, &mmap_limit_); - } else { - s = IOError(fname, errno); - } - } - close(fd); - if (!s.ok()) { - mmap_limit_.Release(); - } - } else { - *result = new PosixRandomAccessFile(fname, fd); - } - return s; - } - - virtual Status NewWritableFile(const std::string& fname, - WritableFile** result) { - Status s; - FILE* f = fopen(fname.c_str(), "w"); - if (f == NULL) { - *result = NULL; - s = IOError(fname, errno); - } else { - *result = new PosixWritableFile(fname, f); - } - return s; - } - - virtual bool FileExists(const std::string& fname) { - return access(fname.c_str(), F_OK) == 0; - } - - virtual Status GetChildren(const std::string& dir, - std::vector* result) { - result->clear(); - DIR* d = opendir(dir.c_str()); - if (d == NULL) { - return IOError(dir, errno); - } - struct dirent* entry; - while ((entry = readdir(d)) != NULL) { - result->push_back(entry->d_name); - } - closedir(d); - return Status::OK(); - } - - virtual Status DeleteFile(const std::string& fname) { - Status result; - if (unlink(fname.c_str()) != 0) { - result = IOError(fname, errno); - } - return result; - } - - virtual Status CreateDir(const std::string& name) { - Status result; - if (mkdir(name.c_str(), 0755) != 0) { - result = IOError(name, errno); - } - return result; - } - - virtual Status DeleteDir(const std::string& name) { - Status result; - if (rmdir(name.c_str()) != 0) { - result = IOError(name, errno); - } - return result; - } - - virtual Status GetFileSize(const std::string& fname, uint64_t* size) { - Status s; - struct stat sbuf; - if (stat(fname.c_str(), &sbuf) != 0) { - *size = 0; - s = IOError(fname, errno); - } else { - *size = sbuf.st_size; - } - return s; - } - - virtual Status RenameFile(const std::string& src, const std::string& target) { - Status result; - if (rename(src.c_str(), target.c_str()) != 0) { - result = IOError(src, errno); - } - return result; - } - - virtual Status LockFile(const std::string& fname, FileLock** lock) { - *lock = NULL; - Status result; - int fd = open(fname.c_str(), O_RDWR | O_CREAT, 0644); - if (fd < 0) { - result = IOError(fname, errno); - } else if (!locks_.Insert(fname)) { - close(fd); - result = Status::IOError("lock " + fname, "already held by process"); - } else if (LockOrUnlock(fd, true) == -1) { - result = IOError("lock " + fname, errno); - close(fd); - locks_.Remove(fname); - } else { - PosixFileLock* my_lock = new PosixFileLock; - my_lock->fd_ = fd; - my_lock->name_ = fname; - *lock = my_lock; - } - return result; - } - - virtual Status UnlockFile(FileLock* lock) { - PosixFileLock* my_lock = reinterpret_cast(lock); - Status result; - if (LockOrUnlock(my_lock->fd_, false) == -1) { - result = IOError("unlock", errno); - } - locks_.Remove(my_lock->name_); - close(my_lock->fd_); - delete my_lock; - return result; - } - - virtual void Schedule(void (*function)(void*), void* arg); - - virtual void StartThread(void (*function)(void* arg), void* arg); - - virtual Status GetTestDirectory(std::string* result) { - const char* env = getenv("TEST_TMPDIR"); - if (env && env[0] != '\0') { - *result = env; - } else { - char buf[100]; - snprintf(buf, sizeof(buf), "/tmp/leveldbtest-%d", int(geteuid())); - *result = buf; - } - // Directory may already exist - CreateDir(*result); - return Status::OK(); - } - - static uint64_t gettid() { - pthread_t tid = pthread_self(); - uint64_t thread_id = 0; - memcpy(&thread_id, &tid, std::min(sizeof(thread_id), sizeof(tid))); - return thread_id; - } - - virtual Status NewLogger(const std::string& fname, Logger** result) { - FILE* f = fopen(fname.c_str(), "w"); - if (f == NULL) { - *result = NULL; - return IOError(fname, errno); - } else { - *result = new PosixLogger(f, &PosixEnv::gettid); - return Status::OK(); - } - } - - virtual uint64_t NowMicros() { - struct timeval tv; - gettimeofday(&tv, NULL); - return static_cast(tv.tv_sec) * 1000000 + tv.tv_usec; - } - - virtual void SleepForMicroseconds(int micros) { - usleep(micros); - } - - private: - void PthreadCall(const char* label, int result) { - if (result != 0) { - fprintf(stderr, "pthread %s: %s\n", label, strerror(result)); - abort(); - } - } - - // BGThread() is the body of the background thread - void BGThread(); - static void* BGThreadWrapper(void* arg) { - reinterpret_cast(arg)->BGThread(); - return NULL; - } - - pthread_mutex_t mu_; - pthread_cond_t bgsignal_; - pthread_t bgthread_; - bool started_bgthread_; - - // Entry per Schedule() call - struct BGItem { void* arg; void (*function)(void*); }; - typedef std::deque BGQueue; - BGQueue queue_; - - PosixLockTable locks_; - MmapLimiter mmap_limit_; -}; - -PosixEnv::PosixEnv() : started_bgthread_(false) { - PthreadCall("mutex_init", pthread_mutex_init(&mu_, NULL)); - PthreadCall("cvar_init", pthread_cond_init(&bgsignal_, NULL)); -} - -void PosixEnv::Schedule(void (*function)(void*), void* arg) { - PthreadCall("lock", pthread_mutex_lock(&mu_)); - - // Start background thread if necessary - if (!started_bgthread_) { - started_bgthread_ = true; - PthreadCall( - "create thread", - pthread_create(&bgthread_, NULL, &PosixEnv::BGThreadWrapper, this)); - } - - // If the queue is currently empty, the background thread may currently be - // waiting. - if (queue_.empty()) { - PthreadCall("signal", pthread_cond_signal(&bgsignal_)); - } - - // Add to priority queue - queue_.push_back(BGItem()); - queue_.back().function = function; - queue_.back().arg = arg; - - PthreadCall("unlock", pthread_mutex_unlock(&mu_)); -} - -void PosixEnv::BGThread() { - while (true) { - // Wait until there is an item that is ready to run - PthreadCall("lock", pthread_mutex_lock(&mu_)); - while (queue_.empty()) { - PthreadCall("wait", pthread_cond_wait(&bgsignal_, &mu_)); - } - - void (*function)(void*) = queue_.front().function; - void* arg = queue_.front().arg; - queue_.pop_front(); - - PthreadCall("unlock", pthread_mutex_unlock(&mu_)); - (*function)(arg); - } -} - -namespace { -struct StartThreadState { - void (*user_function)(void*); - void* arg; -}; -} -static void* StartThreadWrapper(void* arg) { - StartThreadState* state = reinterpret_cast(arg); - state->user_function(state->arg); - delete state; - return NULL; -} - -void PosixEnv::StartThread(void (*function)(void* arg), void* arg) { - pthread_t t; - StartThreadState* state = new StartThreadState; - state->user_function = function; - state->arg = arg; - PthreadCall("start thread", - pthread_create(&t, NULL, &StartThreadWrapper, state)); -} - -} // namespace - -static pthread_once_t once = PTHREAD_ONCE_INIT; -static Env* default_env; -static void InitDefaultEnv() { default_env = new PosixEnv; } - -Env* Env::Default() { - pthread_once(&once, InitDefaultEnv); - return default_env; -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/env_test.cc b/leveldb-1.18/util/env_test.cc deleted file mode 100644 index b72cb44..0000000 --- a/leveldb-1.18/util/env_test.cc +++ /dev/null @@ -1,104 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/env.h" - -#include "port/port.h" -#include "util/testharness.h" - -namespace leveldb { - -static const int kDelayMicros = 100000; - -class EnvPosixTest { - private: - port::Mutex mu_; - std::string events_; - - public: - Env* env_; - EnvPosixTest() : env_(Env::Default()) { } -}; - -static void SetBool(void* ptr) { - reinterpret_cast(ptr)->NoBarrier_Store(ptr); -} - -TEST(EnvPosixTest, RunImmediately) { - port::AtomicPointer called (NULL); - env_->Schedule(&SetBool, &called); - Env::Default()->SleepForMicroseconds(kDelayMicros); - ASSERT_TRUE(called.NoBarrier_Load() != NULL); -} - -TEST(EnvPosixTest, RunMany) { - port::AtomicPointer last_id (NULL); - - struct CB { - port::AtomicPointer* last_id_ptr; // Pointer to shared slot - uintptr_t id; // Order# for the execution of this callback - - CB(port::AtomicPointer* p, int i) : last_id_ptr(p), id(i) { } - - static void Run(void* v) { - CB* cb = reinterpret_cast(v); - void* cur = cb->last_id_ptr->NoBarrier_Load(); - ASSERT_EQ(cb->id-1, reinterpret_cast(cur)); - cb->last_id_ptr->Release_Store(reinterpret_cast(cb->id)); - } - }; - - // Schedule in different order than start time - CB cb1(&last_id, 1); - CB cb2(&last_id, 2); - CB cb3(&last_id, 3); - CB cb4(&last_id, 4); - env_->Schedule(&CB::Run, &cb1); - env_->Schedule(&CB::Run, &cb2); - env_->Schedule(&CB::Run, &cb3); - env_->Schedule(&CB::Run, &cb4); - - Env::Default()->SleepForMicroseconds(kDelayMicros); - void* cur = last_id.Acquire_Load(); - ASSERT_EQ(4, reinterpret_cast(cur)); -} - -struct State { - port::Mutex mu; - int val; - int num_running; -}; - -static void ThreadBody(void* arg) { - State* s = reinterpret_cast(arg); - s->mu.Lock(); - s->val += 1; - s->num_running -= 1; - s->mu.Unlock(); -} - -TEST(EnvPosixTest, StartThread) { - State state; - state.val = 0; - state.num_running = 3; - for (int i = 0; i < 3; i++) { - env_->StartThread(&ThreadBody, &state); - } - while (true) { - state.mu.Lock(); - int num = state.num_running; - state.mu.Unlock(); - if (num == 0) { - break; - } - Env::Default()->SleepForMicroseconds(kDelayMicros); - } - ASSERT_EQ(state.val, 3); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/util/filter_policy.cc b/leveldb-1.18/util/filter_policy.cc deleted file mode 100644 index 7b045c8..0000000 --- a/leveldb-1.18/util/filter_policy.cc +++ /dev/null @@ -1,11 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/filter_policy.h" - -namespace leveldb { - -FilterPolicy::~FilterPolicy() { } - -} // namespace leveldb diff --git a/leveldb-1.18/util/hash.cc b/leveldb-1.18/util/hash.cc deleted file mode 100644 index ed439ce..0000000 --- a/leveldb-1.18/util/hash.cc +++ /dev/null @@ -1,52 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include "util/coding.h" -#include "util/hash.h" - -// The FALLTHROUGH_INTENDED macro can be used to annotate implicit fall-through -// between switch labels. The real definition should be provided externally. -// This one is a fallback version for unsupported compilers. -#ifndef FALLTHROUGH_INTENDED -#define FALLTHROUGH_INTENDED do { } while (0) -#endif - -namespace leveldb { - -uint32_t Hash(const char* data, size_t n, uint32_t seed) { - // Similar to murmur hash - const uint32_t m = 0xc6a4a793; - const uint32_t r = 24; - const char* limit = data + n; - uint32_t h = seed ^ (n * m); - - // Pick up four bytes at a time - while (data + 4 <= limit) { - uint32_t w = DecodeFixed32(data); - data += 4; - h += w; - h *= m; - h ^= (h >> 16); - } - - // Pick up remaining bytes - switch (limit - data) { - case 3: - h += static_cast(data[2]) << 16; - FALLTHROUGH_INTENDED; - case 2: - h += static_cast(data[1]) << 8; - FALLTHROUGH_INTENDED; - case 1: - h += static_cast(data[0]); - h *= m; - h ^= (h >> r); - break; - } - return h; -} - - -} // namespace leveldb diff --git a/leveldb-1.18/util/hash.h b/leveldb-1.18/util/hash.h deleted file mode 100644 index 8889d56..0000000 --- a/leveldb-1.18/util/hash.h +++ /dev/null @@ -1,19 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Simple hash function used for internal data structures - -#ifndef STORAGE_LEVELDB_UTIL_HASH_H_ -#define STORAGE_LEVELDB_UTIL_HASH_H_ - -#include -#include - -namespace leveldb { - -extern uint32_t Hash(const char* data, size_t n, uint32_t seed); - -} - -#endif // STORAGE_LEVELDB_UTIL_HASH_H_ diff --git a/leveldb-1.18/util/hash_test.cc b/leveldb-1.18/util/hash_test.cc deleted file mode 100644 index eaa1c92..0000000 --- a/leveldb-1.18/util/hash_test.cc +++ /dev/null @@ -1,54 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/hash.h" -#include "util/testharness.h" - -namespace leveldb { - -class HASH { }; - -TEST(HASH, SignedUnsignedIssue) { - const unsigned char data1[1] = {0x62}; - const unsigned char data2[2] = {0xc3, 0x97}; - const unsigned char data3[3] = {0xe2, 0x99, 0xa5}; - const unsigned char data4[4] = {0xe1, 0x80, 0xb9, 0x32}; - const unsigned char data5[48] = { - 0x01, 0xc0, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x14, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x04, 0x00, - 0x00, 0x00, 0x00, 0x14, - 0x00, 0x00, 0x00, 0x18, - 0x28, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x02, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - }; - - ASSERT_EQ(Hash(0, 0, 0xbc9f1d34), 0xbc9f1d34); - ASSERT_EQ( - Hash(reinterpret_cast(data1), sizeof(data1), 0xbc9f1d34), - 0xef1345c4); - ASSERT_EQ( - Hash(reinterpret_cast(data2), sizeof(data2), 0xbc9f1d34), - 0x5b663814); - ASSERT_EQ( - Hash(reinterpret_cast(data3), sizeof(data3), 0xbc9f1d34), - 0x323c078f); - ASSERT_EQ( - Hash(reinterpret_cast(data4), sizeof(data4), 0xbc9f1d34), - 0xed21633a); - ASSERT_EQ( - Hash(reinterpret_cast(data5), sizeof(data5), 0x12345678), - 0xf333dabb); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} diff --git a/leveldb-1.18/util/histogram.cc b/leveldb-1.18/util/histogram.cc deleted file mode 100644 index bb95f58..0000000 --- a/leveldb-1.18/util/histogram.cc +++ /dev/null @@ -1,139 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include -#include "port/port.h" -#include "util/histogram.h" - -namespace leveldb { - -const double Histogram::kBucketLimit[kNumBuckets] = { - 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 25, 30, 35, 40, 45, - 50, 60, 70, 80, 90, 100, 120, 140, 160, 180, 200, 250, 300, 350, 400, 450, - 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, 2500, 3000, - 3500, 4000, 4500, 5000, 6000, 7000, 8000, 9000, 10000, 12000, 14000, - 16000, 18000, 20000, 25000, 30000, 35000, 40000, 45000, 50000, 60000, - 70000, 80000, 90000, 100000, 120000, 140000, 160000, 180000, 200000, - 250000, 300000, 350000, 400000, 450000, 500000, 600000, 700000, 800000, - 900000, 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2500000, - 3000000, 3500000, 4000000, 4500000, 5000000, 6000000, 7000000, 8000000, - 9000000, 10000000, 12000000, 14000000, 16000000, 18000000, 20000000, - 25000000, 30000000, 35000000, 40000000, 45000000, 50000000, 60000000, - 70000000, 80000000, 90000000, 100000000, 120000000, 140000000, 160000000, - 180000000, 200000000, 250000000, 300000000, 350000000, 400000000, - 450000000, 500000000, 600000000, 700000000, 800000000, 900000000, - 1000000000, 1200000000, 1400000000, 1600000000, 1800000000, 2000000000, - 2500000000.0, 3000000000.0, 3500000000.0, 4000000000.0, 4500000000.0, - 5000000000.0, 6000000000.0, 7000000000.0, 8000000000.0, 9000000000.0, - 1e200, -}; - -void Histogram::Clear() { - min_ = kBucketLimit[kNumBuckets-1]; - max_ = 0; - num_ = 0; - sum_ = 0; - sum_squares_ = 0; - for (int i = 0; i < kNumBuckets; i++) { - buckets_[i] = 0; - } -} - -void Histogram::Add(double value) { - // Linear search is fast enough for our usage in db_bench - int b = 0; - while (b < kNumBuckets - 1 && kBucketLimit[b] <= value) { - b++; - } - buckets_[b] += 1.0; - if (min_ > value) min_ = value; - if (max_ < value) max_ = value; - num_++; - sum_ += value; - sum_squares_ += (value * value); -} - -void Histogram::Merge(const Histogram& other) { - if (other.min_ < min_) min_ = other.min_; - if (other.max_ > max_) max_ = other.max_; - num_ += other.num_; - sum_ += other.sum_; - sum_squares_ += other.sum_squares_; - for (int b = 0; b < kNumBuckets; b++) { - buckets_[b] += other.buckets_[b]; - } -} - -double Histogram::Median() const { - return Percentile(50.0); -} - -double Histogram::Percentile(double p) const { - double threshold = num_ * (p / 100.0); - double sum = 0; - for (int b = 0; b < kNumBuckets; b++) { - sum += buckets_[b]; - if (sum >= threshold) { - // Scale linearly within this bucket - double left_point = (b == 0) ? 0 : kBucketLimit[b-1]; - double right_point = kBucketLimit[b]; - double left_sum = sum - buckets_[b]; - double right_sum = sum; - double pos = (threshold - left_sum) / (right_sum - left_sum); - double r = left_point + (right_point - left_point) * pos; - if (r < min_) r = min_; - if (r > max_) r = max_; - return r; - } - } - return max_; -} - -double Histogram::Average() const { - if (num_ == 0.0) return 0; - return sum_ / num_; -} - -double Histogram::StandardDeviation() const { - if (num_ == 0.0) return 0; - double variance = (sum_squares_ * num_ - sum_ * sum_) / (num_ * num_); - return sqrt(variance); -} - -std::string Histogram::ToString() const { - std::string r; - char buf[200]; - snprintf(buf, sizeof(buf), - "Count: %.0f Average: %.4f StdDev: %.2f\n", - num_, Average(), StandardDeviation()); - r.append(buf); - snprintf(buf, sizeof(buf), - "Min: %.4f Median: %.4f Max: %.4f\n", - (num_ == 0.0 ? 0.0 : min_), Median(), max_); - r.append(buf); - r.append("------------------------------------------------------\n"); - const double mult = 100.0 / num_; - double sum = 0; - for (int b = 0; b < kNumBuckets; b++) { - if (buckets_[b] <= 0.0) continue; - sum += buckets_[b]; - snprintf(buf, sizeof(buf), - "[ %7.0f, %7.0f ) %7.0f %7.3f%% %7.3f%% ", - ((b == 0) ? 0.0 : kBucketLimit[b-1]), // left - kBucketLimit[b], // right - buckets_[b], // count - mult * buckets_[b], // percentage - mult * sum); // cumulative percentage - r.append(buf); - - // Add hash marks based on percentage; 20 marks for 100%. - int marks = static_cast(20*(buckets_[b] / num_) + 0.5); - r.append(marks, '#'); - r.push_back('\n'); - } - return r; -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/histogram.h b/leveldb-1.18/util/histogram.h deleted file mode 100644 index 1ef9f3c..0000000 --- a/leveldb-1.18/util/histogram.h +++ /dev/null @@ -1,42 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_UTIL_HISTOGRAM_H_ -#define STORAGE_LEVELDB_UTIL_HISTOGRAM_H_ - -#include - -namespace leveldb { - -class Histogram { - public: - Histogram() { } - ~Histogram() { } - - void Clear(); - void Add(double value); - void Merge(const Histogram& other); - - std::string ToString() const; - - private: - double min_; - double max_; - double num_; - double sum_; - double sum_squares_; - - enum { kNumBuckets = 154 }; - static const double kBucketLimit[kNumBuckets]; - double buckets_[kNumBuckets]; - - double Median() const; - double Percentile(double p) const; - double Average() const; - double StandardDeviation() const; -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_HISTOGRAM_H_ diff --git a/leveldb-1.18/util/logging.cc b/leveldb-1.18/util/logging.cc deleted file mode 100644 index ca6b324..0000000 --- a/leveldb-1.18/util/logging.cc +++ /dev/null @@ -1,72 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/logging.h" - -#include -#include -#include -#include -#include "leveldb/env.h" -#include "leveldb/slice.h" - -namespace leveldb { - -void AppendNumberTo(std::string* str, uint64_t num) { - char buf[30]; - snprintf(buf, sizeof(buf), "%llu", (unsigned long long) num); - str->append(buf); -} - -void AppendEscapedStringTo(std::string* str, const Slice& value) { - for (size_t i = 0; i < value.size(); i++) { - char c = value[i]; - if (c >= ' ' && c <= '~') { - str->push_back(c); - } else { - char buf[10]; - snprintf(buf, sizeof(buf), "\\x%02x", - static_cast(c) & 0xff); - str->append(buf); - } - } -} - -std::string NumberToString(uint64_t num) { - std::string r; - AppendNumberTo(&r, num); - return r; -} - -std::string EscapeString(const Slice& value) { - std::string r; - AppendEscapedStringTo(&r, value); - return r; -} - -bool ConsumeDecimalNumber(Slice* in, uint64_t* val) { - uint64_t v = 0; - int digits = 0; - while (!in->empty()) { - char c = (*in)[0]; - if (c >= '0' && c <= '9') { - ++digits; - const int delta = (c - '0'); - static const uint64_t kMaxUint64 = ~static_cast(0); - if (v > kMaxUint64/10 || - (v == kMaxUint64/10 && delta > kMaxUint64%10)) { - // Overflow - return false; - } - v = (v * 10) + delta; - in->remove_prefix(1); - } else { - break; - } - } - *val = v; - return (digits > 0); -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/logging.h b/leveldb-1.18/util/logging.h deleted file mode 100644 index 1b450d2..0000000 --- a/leveldb-1.18/util/logging.h +++ /dev/null @@ -1,43 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Must not be included from any .h files to avoid polluting the namespace -// with macros. - -#ifndef STORAGE_LEVELDB_UTIL_LOGGING_H_ -#define STORAGE_LEVELDB_UTIL_LOGGING_H_ - -#include -#include -#include -#include "port/port.h" - -namespace leveldb { - -class Slice; -class WritableFile; - -// Append a human-readable printout of "num" to *str -extern void AppendNumberTo(std::string* str, uint64_t num); - -// Append a human-readable printout of "value" to *str. -// Escapes any non-printable characters found in "value". -extern void AppendEscapedStringTo(std::string* str, const Slice& value); - -// Return a human-readable printout of "num" -extern std::string NumberToString(uint64_t num); - -// Return a human-readable version of "value". -// Escapes any non-printable characters found in "value". -extern std::string EscapeString(const Slice& value); - -// Parse a human-readable number from "*in" into *value. On success, -// advances "*in" past the consumed number and sets "*val" to the -// numeric value. Otherwise, returns false and leaves *in in an -// unspecified state. -extern bool ConsumeDecimalNumber(Slice* in, uint64_t* val); - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_LOGGING_H_ diff --git a/leveldb-1.18/util/mutexlock.h b/leveldb-1.18/util/mutexlock.h deleted file mode 100644 index 1ff5a9e..0000000 --- a/leveldb-1.18/util/mutexlock.h +++ /dev/null @@ -1,41 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_ -#define STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_ - -#include "port/port.h" -#include "port/thread_annotations.h" - -namespace leveldb { - -// Helper class that locks a mutex on construction and unlocks the mutex when -// the destructor of the MutexLock object is invoked. -// -// Typical usage: -// -// void MyClass::MyMethod() { -// MutexLock l(&mu_); // mu_ is an instance variable -// ... some complex code, possibly with multiple return paths ... -// } - -class SCOPED_LOCKABLE MutexLock { - public: - explicit MutexLock(port::Mutex *mu) EXCLUSIVE_LOCK_FUNCTION(mu) - : mu_(mu) { - this->mu_->Lock(); - } - ~MutexLock() UNLOCK_FUNCTION() { this->mu_->Unlock(); } - - private: - port::Mutex *const mu_; - // No copying allowed - MutexLock(const MutexLock&); - void operator=(const MutexLock&); -}; - -} // namespace leveldb - - -#endif // STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_ diff --git a/leveldb-1.18/util/options.cc b/leveldb-1.18/util/options.cc deleted file mode 100644 index 76af5b9..0000000 --- a/leveldb-1.18/util/options.cc +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "leveldb/options.h" - -#include "leveldb/comparator.h" -#include "leveldb/env.h" - -namespace leveldb { - -Options::Options() - : comparator(BytewiseComparator()), - create_if_missing(false), - error_if_exists(false), - paranoid_checks(false), - env(Env::Default()), - info_log(NULL), - write_buffer_size(4<<20), - max_open_files(1000), - block_cache(NULL), - block_size(4096), - block_restart_interval(16), - compression(kSnappyCompression), - filter_policy(NULL) { -} - - -} // namespace leveldb diff --git a/leveldb-1.18/util/posix_logger.h b/leveldb-1.18/util/posix_logger.h deleted file mode 100644 index 9741b1a..0000000 --- a/leveldb-1.18/util/posix_logger.h +++ /dev/null @@ -1,98 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// Logger implementation that can be shared by all environments -// where enough posix functionality is available. - -#ifndef STORAGE_LEVELDB_UTIL_POSIX_LOGGER_H_ -#define STORAGE_LEVELDB_UTIL_POSIX_LOGGER_H_ - -#include -#include -#include -#include -#include "leveldb/env.h" - -namespace leveldb { - -class PosixLogger : public Logger { - private: - FILE* file_; - uint64_t (*gettid_)(); // Return the thread id for the current thread - public: - PosixLogger(FILE* f, uint64_t (*gettid)()) : file_(f), gettid_(gettid) { } - virtual ~PosixLogger() { - fclose(file_); - } - virtual void Logv(const char* format, va_list ap) { - const uint64_t thread_id = (*gettid_)(); - - // We try twice: the first time with a fixed-size stack allocated buffer, - // and the second time with a much larger dynamically allocated buffer. - char buffer[500]; - for (int iter = 0; iter < 2; iter++) { - char* base; - int bufsize; - if (iter == 0) { - bufsize = sizeof(buffer); - base = buffer; - } else { - bufsize = 30000; - base = new char[bufsize]; - } - char* p = base; - char* limit = base + bufsize; - - struct timeval now_tv; - gettimeofday(&now_tv, NULL); - const time_t seconds = now_tv.tv_sec; - struct tm t; - localtime_r(&seconds, &t); - p += snprintf(p, limit - p, - "%04d/%02d/%02d-%02d:%02d:%02d.%06d %llx ", - t.tm_year + 1900, - t.tm_mon + 1, - t.tm_mday, - t.tm_hour, - t.tm_min, - t.tm_sec, - static_cast(now_tv.tv_usec), - static_cast(thread_id)); - - // Print the message - if (p < limit) { - va_list backup_ap; - va_copy(backup_ap, ap); - p += vsnprintf(p, limit - p, format, backup_ap); - va_end(backup_ap); - } - - // Truncate to available space if necessary - if (p >= limit) { - if (iter == 0) { - continue; // Try again with larger buffer - } else { - p = limit - 1; - } - } - - // Add newline if necessary - if (p == base || p[-1] != '\n') { - *p++ = '\n'; - } - - assert(p <= limit); - fwrite(base, 1, p - base, file_); - fflush(file_); - if (base != buffer) { - delete[] base; - } - break; - } - } -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_POSIX_LOGGER_H_ diff --git a/leveldb-1.18/util/random.h b/leveldb-1.18/util/random.h deleted file mode 100644 index ddd51b1..0000000 --- a/leveldb-1.18/util/random.h +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_UTIL_RANDOM_H_ -#define STORAGE_LEVELDB_UTIL_RANDOM_H_ - -#include - -namespace leveldb { - -// A very simple random number generator. Not especially good at -// generating truly random bits, but good enough for our needs in this -// package. -class Random { - private: - uint32_t seed_; - public: - explicit Random(uint32_t s) : seed_(s & 0x7fffffffu) { - // Avoid bad seeds. - if (seed_ == 0 || seed_ == 2147483647L) { - seed_ = 1; - } - } - uint32_t Next() { - static const uint32_t M = 2147483647L; // 2^31-1 - static const uint64_t A = 16807; // bits 14, 8, 7, 5, 2, 1, 0 - // We are computing - // seed_ = (seed_ * A) % M, where M = 2^31-1 - // - // seed_ must not be zero or M, or else all subsequent computed values - // will be zero or M respectively. For all other values, seed_ will end - // up cycling through every number in [1,M-1] - uint64_t product = seed_ * A; - - // Compute (product % M) using the fact that ((x << 31) % M) == x. - seed_ = static_cast((product >> 31) + (product & M)); - // The first reduction may overflow by 1 bit, so we may need to - // repeat. mod == M is not possible; using > allows the faster - // sign-bit-based test. - if (seed_ > M) { - seed_ -= M; - } - return seed_; - } - // Returns a uniformly distributed value in the range [0..n-1] - // REQUIRES: n > 0 - uint32_t Uniform(int n) { return Next() % n; } - - // Randomly returns true ~"1/n" of the time, and false otherwise. - // REQUIRES: n > 0 - bool OneIn(int n) { return (Next() % n) == 0; } - - // Skewed: pick "base" uniformly from range [0,max_log] and then - // return "base" random bits. The effect is to pick a number in the - // range [0,2^max_log-1] with exponential bias towards smaller numbers. - uint32_t Skewed(int max_log) { - return Uniform(1 << Uniform(max_log + 1)); - } -}; - -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_RANDOM_H_ diff --git a/leveldb-1.18/util/status.cc b/leveldb-1.18/util/status.cc deleted file mode 100644 index a44f35b..0000000 --- a/leveldb-1.18/util/status.cc +++ /dev/null @@ -1,75 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include -#include "port/port.h" -#include "leveldb/status.h" - -namespace leveldb { - -const char* Status::CopyState(const char* state) { - uint32_t size; - memcpy(&size, state, sizeof(size)); - char* result = new char[size + 5]; - memcpy(result, state, size + 5); - return result; -} - -Status::Status(Code code, const Slice& msg, const Slice& msg2) { - assert(code != kOk); - const uint32_t len1 = msg.size(); - const uint32_t len2 = msg2.size(); - const uint32_t size = len1 + (len2 ? (2 + len2) : 0); - char* result = new char[size + 5]; - memcpy(result, &size, sizeof(size)); - result[4] = static_cast(code); - memcpy(result + 5, msg.data(), len1); - if (len2) { - result[5 + len1] = ':'; - result[6 + len1] = ' '; - memcpy(result + 7 + len1, msg2.data(), len2); - } - state_ = result; -} - -std::string Status::ToString() const { - if (state_ == NULL) { - return "OK"; - } else { - char tmp[30]; - const char* type; - switch (code()) { - case kOk: - type = "OK"; - break; - case kNotFound: - type = "NotFound: "; - break; - case kCorruption: - type = "Corruption: "; - break; - case kNotSupported: - type = "Not implemented: "; - break; - case kInvalidArgument: - type = "Invalid argument: "; - break; - case kIOError: - type = "IO error: "; - break; - default: - snprintf(tmp, sizeof(tmp), "Unknown code(%d): ", - static_cast(code())); - type = tmp; - break; - } - std::string result(type); - uint32_t length; - memcpy(&length, state_, sizeof(length)); - result.append(state_ + 5, length); - return result; - } -} - -} // namespace leveldb diff --git a/leveldb-1.18/util/testharness.cc b/leveldb-1.18/util/testharness.cc deleted file mode 100644 index 402fab3..0000000 --- a/leveldb-1.18/util/testharness.cc +++ /dev/null @@ -1,77 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/testharness.h" - -#include -#include -#include -#include - -namespace leveldb { -namespace test { - -namespace { -struct Test { - const char* base; - const char* name; - void (*func)(); -}; -std::vector* tests; -} - -bool RegisterTest(const char* base, const char* name, void (*func)()) { - if (tests == NULL) { - tests = new std::vector; - } - Test t; - t.base = base; - t.name = name; - t.func = func; - tests->push_back(t); - return true; -} - -int RunAllTests() { - const char* matcher = getenv("LEVELDB_TESTS"); - - int num = 0; - if (tests != NULL) { - for (size_t i = 0; i < tests->size(); i++) { - const Test& t = (*tests)[i]; - if (matcher != NULL) { - std::string name = t.base; - name.push_back('.'); - name.append(t.name); - if (strstr(name.c_str(), matcher) == NULL) { - continue; - } - } - fprintf(stderr, "==== Test %s.%s\n", t.base, t.name); - (*t.func)(); - ++num; - } - } - fprintf(stderr, "==== PASSED %d tests\n", num); - return 0; -} - -std::string TmpDir() { - std::string dir; - Status s = Env::Default()->GetTestDirectory(&dir); - ASSERT_TRUE(s.ok()) << s.ToString(); - return dir; -} - -int RandomSeed() { - const char* env = getenv("TEST_RANDOM_SEED"); - int result = (env != NULL ? atoi(env) : 301); - if (result <= 0) { - result = 301; - } - return result; -} - -} // namespace test -} // namespace leveldb diff --git a/leveldb-1.18/util/testharness.h b/leveldb-1.18/util/testharness.h deleted file mode 100644 index da4fe68..0000000 --- a/leveldb-1.18/util/testharness.h +++ /dev/null @@ -1,138 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_UTIL_TESTHARNESS_H_ -#define STORAGE_LEVELDB_UTIL_TESTHARNESS_H_ - -#include -#include -#include -#include "leveldb/env.h" -#include "leveldb/slice.h" -#include "util/random.h" - -namespace leveldb { -namespace test { - -// Run some of the tests registered by the TEST() macro. If the -// environment variable "LEVELDB_TESTS" is not set, runs all tests. -// Otherwise, runs only the tests whose name contains the value of -// "LEVELDB_TESTS" as a substring. E.g., suppose the tests are: -// TEST(Foo, Hello) { ... } -// TEST(Foo, World) { ... } -// LEVELDB_TESTS=Hello will run the first test -// LEVELDB_TESTS=o will run both tests -// LEVELDB_TESTS=Junk will run no tests -// -// Returns 0 if all tests pass. -// Dies or returns a non-zero value if some test fails. -extern int RunAllTests(); - -// Return the directory to use for temporary storage. -extern std::string TmpDir(); - -// Return a randomization seed for this run. Typically returns the -// same number on repeated invocations of this binary, but automated -// runs may be able to vary the seed. -extern int RandomSeed(); - -// An instance of Tester is allocated to hold temporary state during -// the execution of an assertion. -class Tester { - private: - bool ok_; - const char* fname_; - int line_; - std::stringstream ss_; - - public: - Tester(const char* f, int l) - : ok_(true), fname_(f), line_(l) { - } - - ~Tester() { - if (!ok_) { - fprintf(stderr, "%s:%d:%s\n", fname_, line_, ss_.str().c_str()); - exit(1); - } - } - - Tester& Is(bool b, const char* msg) { - if (!b) { - ss_ << " Assertion failure " << msg; - ok_ = false; - } - return *this; - } - - Tester& IsOk(const Status& s) { - if (!s.ok()) { - ss_ << " " << s.ToString(); - ok_ = false; - } - return *this; - } - -#define BINARY_OP(name,op) \ - template \ - Tester& name(const X& x, const Y& y) { \ - if (! (x op y)) { \ - ss_ << " failed: " << x << (" " #op " ") << y; \ - ok_ = false; \ - } \ - return *this; \ - } - - BINARY_OP(IsEq, ==) - BINARY_OP(IsNe, !=) - BINARY_OP(IsGe, >=) - BINARY_OP(IsGt, >) - BINARY_OP(IsLe, <=) - BINARY_OP(IsLt, <) -#undef BINARY_OP - - // Attach the specified value to the error message if an error has occurred - template - Tester& operator<<(const V& value) { - if (!ok_) { - ss_ << " " << value; - } - return *this; - } -}; - -#define ASSERT_TRUE(c) ::leveldb::test::Tester(__FILE__, __LINE__).Is((c), #c) -#define ASSERT_OK(s) ::leveldb::test::Tester(__FILE__, __LINE__).IsOk((s)) -#define ASSERT_EQ(a,b) ::leveldb::test::Tester(__FILE__, __LINE__).IsEq((a),(b)) -#define ASSERT_NE(a,b) ::leveldb::test::Tester(__FILE__, __LINE__).IsNe((a),(b)) -#define ASSERT_GE(a,b) ::leveldb::test::Tester(__FILE__, __LINE__).IsGe((a),(b)) -#define ASSERT_GT(a,b) ::leveldb::test::Tester(__FILE__, __LINE__).IsGt((a),(b)) -#define ASSERT_LE(a,b) ::leveldb::test::Tester(__FILE__, __LINE__).IsLe((a),(b)) -#define ASSERT_LT(a,b) ::leveldb::test::Tester(__FILE__, __LINE__).IsLt((a),(b)) - -#define TCONCAT(a,b) TCONCAT1(a,b) -#define TCONCAT1(a,b) a##b - -#define TEST(base,name) \ -class TCONCAT(_Test_,name) : public base { \ - public: \ - void _Run(); \ - static void _RunIt() { \ - TCONCAT(_Test_,name) t; \ - t._Run(); \ - } \ -}; \ -bool TCONCAT(_Test_ignored_,name) = \ - ::leveldb::test::RegisterTest(#base, #name, &TCONCAT(_Test_,name)::_RunIt); \ -void TCONCAT(_Test_,name)::_Run() - -// Register the specified test. Typically not used directly, but -// invoked via the macro expansion of TEST. -extern bool RegisterTest(const char* base, const char* name, void (*func)()); - - -} // namespace test -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_TESTHARNESS_H_ diff --git a/leveldb-1.18/util/testutil.cc b/leveldb-1.18/util/testutil.cc deleted file mode 100644 index bee56bf..0000000 --- a/leveldb-1.18/util/testutil.cc +++ /dev/null @@ -1,51 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "util/testutil.h" - -#include "util/random.h" - -namespace leveldb { -namespace test { - -Slice RandomString(Random* rnd, int len, std::string* dst) { - dst->resize(len); - for (int i = 0; i < len; i++) { - (*dst)[i] = static_cast(' ' + rnd->Uniform(95)); // ' ' .. '~' - } - return Slice(*dst); -} - -std::string RandomKey(Random* rnd, int len) { - // Make sure to generate a wide variety of characters so we - // test the boundary conditions for short-key optimizations. - static const char kTestChars[] = { - '\0', '\1', 'a', 'b', 'c', 'd', 'e', '\xfd', '\xfe', '\xff' - }; - std::string result; - for (int i = 0; i < len; i++) { - result += kTestChars[rnd->Uniform(sizeof(kTestChars))]; - } - return result; -} - - -extern Slice CompressibleString(Random* rnd, double compressed_fraction, - size_t len, std::string* dst) { - int raw = static_cast(len * compressed_fraction); - if (raw < 1) raw = 1; - std::string raw_data; - RandomString(rnd, raw, &raw_data); - - // Duplicate the random data until we have filled "len" bytes - dst->clear(); - while (dst->size() < len) { - dst->append(raw_data); - } - dst->resize(len); - return Slice(*dst); -} - -} // namespace test -} // namespace leveldb diff --git a/leveldb-1.18/util/testutil.h b/leveldb-1.18/util/testutil.h deleted file mode 100644 index adad3fc..0000000 --- a/leveldb-1.18/util/testutil.h +++ /dev/null @@ -1,53 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_UTIL_TESTUTIL_H_ -#define STORAGE_LEVELDB_UTIL_TESTUTIL_H_ - -#include "leveldb/env.h" -#include "leveldb/slice.h" -#include "util/random.h" - -namespace leveldb { -namespace test { - -// Store in *dst a random string of length "len" and return a Slice that -// references the generated data. -extern Slice RandomString(Random* rnd, int len, std::string* dst); - -// Return a random key with the specified length that may contain interesting -// characters (e.g. \x00, \xff, etc.). -extern std::string RandomKey(Random* rnd, int len); - -// Store in *dst a string of length "len" that will compress to -// "N*compressed_fraction" bytes and return a Slice that references -// the generated data. -extern Slice CompressibleString(Random* rnd, double compressed_fraction, - size_t len, std::string* dst); - -// A wrapper that allows injection of errors. -class ErrorEnv : public EnvWrapper { - public: - bool writable_file_error_; - int num_writable_file_errors_; - - ErrorEnv() : EnvWrapper(Env::Default()), - writable_file_error_(false), - num_writable_file_errors_(0) { } - - virtual Status NewWritableFile(const std::string& fname, - WritableFile** result) { - if (writable_file_error_) { - ++num_writable_file_errors_; - *result = NULL; - return Status::IOError(fname, "fake error"); - } - return target()->NewWritableFile(fname, result); - } -}; - -} // namespace test -} // namespace leveldb - -#endif // STORAGE_LEVELDB_UTIL_TESTUTIL_H_ diff --git a/snappy-1.1.0/AUTHORS b/snappy-1.1.0/AUTHORS deleted file mode 100644 index 4858b37..0000000 --- a/snappy-1.1.0/AUTHORS +++ /dev/null @@ -1 +0,0 @@ -opensource@google.com diff --git a/snappy-1.1.0/COPYING b/snappy-1.1.0/COPYING deleted file mode 100644 index 8d6bd9f..0000000 --- a/snappy-1.1.0/COPYING +++ /dev/null @@ -1,28 +0,0 @@ -Copyright 2011, Google Inc. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright -notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above -copyright notice, this list of conditions and the following disclaimer -in the documentation and/or other materials provided with the -distribution. - * Neither the name of Google Inc. nor the names of its -contributors may be used to endorse or promote products derived from -this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/snappy-1.1.0/ChangeLog b/snappy-1.1.0/ChangeLog deleted file mode 100644 index 10aa968..0000000 --- a/snappy-1.1.0/ChangeLog +++ /dev/null @@ -1,1618 +0,0 @@ ------------------------------------------------------------------------- -r72 | snappy.mirrorbot@gmail.com | 2013-02-05 15:30:05 +0100 (Tue, 05 Feb 2013) | 9 lines - -Make ./snappy_unittest pass without "srcdir" being defined. - -Previously, snappy_unittests would read from an absolute path /testdata/..; -convert it to use a relative path instead. - -Patch from Marc-Antonie Ruel. - -R=maruel - ------------------------------------------------------------------------- -r71 | snappy.mirrorbot@gmail.com | 2013-01-18 13:16:36 +0100 (Fri, 18 Jan 2013) | 287 lines - -Increase the Zippy block size from 32 kB to 64 kB, winning ~3% density -while being effectively performance neutral. - -The longer story about density is that we win 3-6% density on the benchmarks -where this has any effect at all; many of the benchmarks (cp, c, lsp, man) -are smaller than 32 kB and thus will have no effect. Binary data also seems -to win little or nothing; of course, the already-compressed data wins nothing. -The protobuf benchmark wins as much as ~18% depending on architecture, -but I wouldn't be too sure that this is representative of protobuf data in -general. - -As of performance, we lose a tiny amount since we get more tags (e.g., a long -literal might be broken up into literal-copy-literal), but we win it back with -less clearing of the hash table, and more opportunities to skip incompressible -data (e.g. in the jpg benchmark). Decompression seems to get ever so slightly -slower, again due to more tags. The total net change is about as close to zero -as we can get, so the end effect seems to be simply more density and no -real performance change. - -The comment about not changing kBlockSize, scary as it is, is not really -relevant, since we're never going to have a block-level decompressor without -explicitly marked blocks. Replace it with something more appropriate. - -This affects the framing format, but it's okay to change it since it basically -has no users yet. - - -Density (note that cp, c, lsp and man are all smaller than 32 kB): - - Benchmark Description Base (%) New (%) Improvement - -------------------------------------------------------------- - ZFlat/0 html 22.57 22.31 +5.6% - ZFlat/1 urls 50.89 47.77 +6.5% - ZFlat/2 jpg 99.88 99.87 +0.0% - ZFlat/3 pdf 82.13 82.07 +0.1% - ZFlat/4 html4 23.55 22.51 +4.6% - ZFlat/5 cp 48.12 48.12 +0.0% - ZFlat/6 c 42.40 42.40 +0.0% - ZFlat/7 lsp 48.37 48.37 +0.0% - ZFlat/8 xls 41.34 41.23 +0.3% - ZFlat/9 txt1 59.81 57.87 +3.4% - ZFlat/10 txt2 64.07 61.93 +3.5% - ZFlat/11 txt3 57.11 54.92 +4.0% - ZFlat/12 txt4 68.35 66.22 +3.2% - ZFlat/13 bin 18.21 18.11 +0.6% - ZFlat/14 sum 51.88 48.96 +6.0% - ZFlat/15 man 59.36 59.36 +0.0% - ZFlat/16 pb 23.15 19.64 +17.9% - ZFlat/17 gaviota 38.27 37.72 +1.5% - Geometric mean 45.51 44.15 +3.1% - - -Microbenchmarks (64-bit, opt): - -Westmere 2.8 GHz: - - Benchmark Base (ns) New (ns) Improvement - ------------------------------------------------------------------------------------------------- - BM_UFlat/0 75342 75027 1.3GB/s html +0.4% - BM_UFlat/1 723767 744269 899.6MB/s urls -2.8% - BM_UFlat/2 10072 10072 11.7GB/s jpg +0.0% - BM_UFlat/3 30747 30388 2.9GB/s pdf +1.2% - BM_UFlat/4 307353 306063 1.2GB/s html4 +0.4% - BM_UFlat/5 28593 28743 816.3MB/s cp -0.5% - BM_UFlat/6 12958 12998 818.1MB/s c -0.3% - BM_UFlat/7 3700 3792 935.8MB/s lsp -2.4% - BM_UFlat/8 999685 999905 982.1MB/s xls -0.0% - BM_UFlat/9 232954 230079 630.4MB/s txt1 +1.2% - BM_UFlat/10 200785 201468 592.6MB/s txt2 -0.3% - BM_UFlat/11 617267 610968 666.1MB/s txt3 +1.0% - BM_UFlat/12 821595 822475 558.7MB/s txt4 -0.1% - BM_UFlat/13 377097 377632 1.3GB/s bin -0.1% - BM_UFlat/14 45476 45260 805.8MB/s sum +0.5% - BM_UFlat/15 4985 5003 805.7MB/s man -0.4% - BM_UFlat/16 80813 77494 1.4GB/s pb +4.3% - BM_UFlat/17 251792 241553 727.7MB/s gaviota +4.2% - BM_UValidate/0 40343 40354 2.4GB/s html -0.0% - BM_UValidate/1 426890 451574 1.4GB/s urls -5.5% - BM_UValidate/2 187 179 661.9GB/s jpg +4.5% - BM_UValidate/3 13783 13827 6.4GB/s pdf -0.3% - BM_UValidate/4 162393 163335 2.3GB/s html4 -0.6% - BM_UDataBuffer/0 93756 93302 1046.7MB/s html +0.5% - BM_UDataBuffer/1 886714 916292 730.7MB/s urls -3.2% - BM_UDataBuffer/2 15861 16401 7.2GB/s jpg -3.3% - BM_UDataBuffer/3 38934 39224 2.2GB/s pdf -0.7% - BM_UDataBuffer/4 381008 379428 1029.5MB/s html4 +0.4% - BM_UCord/0 92528 91098 1072.0MB/s html +1.6% - BM_UCord/1 858421 885287 756.3MB/s urls -3.0% - BM_UCord/2 13140 13464 8.8GB/s jpg -2.4% - BM_UCord/3 39012 37773 2.3GB/s pdf +3.3% - BM_UCord/4 376869 371267 1052.1MB/s html4 +1.5% - BM_UCordString/0 75810 75303 1.3GB/s html +0.7% - BM_UCordString/1 735290 753841 888.2MB/s urls -2.5% - BM_UCordString/2 11945 13113 9.0GB/s jpg -8.9% - BM_UCordString/3 33901 32562 2.7GB/s pdf +4.1% - BM_UCordString/4 310985 309390 1.2GB/s html4 +0.5% - BM_UCordValidate/0 40952 40450 2.4GB/s html +1.2% - BM_UCordValidate/1 433842 456531 1.4GB/s urls -5.0% - BM_UCordValidate/2 1179 1173 100.8GB/s jpg +0.5% - BM_UCordValidate/3 14481 14392 6.1GB/s pdf +0.6% - BM_UCordValidate/4 164364 164151 2.3GB/s html4 +0.1% - BM_ZFlat/0 160610 156601 623.6MB/s html (22.31 %) +2.6% - BM_ZFlat/1 1995238 1993582 335.9MB/s urls (47.77 %) +0.1% - BM_ZFlat/2 30133 24983 4.7GB/s jpg (99.87 %) +20.6% - BM_ZFlat/3 74453 73128 1.2GB/s pdf (82.07 %) +1.8% - BM_ZFlat/4 647674 633729 616.4MB/s html4 (22.51 %) +2.2% - BM_ZFlat/5 76259 76090 308.4MB/s cp (48.12 %) +0.2% - BM_ZFlat/6 31106 31084 342.1MB/s c (42.40 %) +0.1% - BM_ZFlat/7 10507 10443 339.8MB/s lsp (48.37 %) +0.6% - BM_ZFlat/8 1811047 1793325 547.6MB/s xls (41.23 %) +1.0% - BM_ZFlat/9 597903 581793 249.3MB/s txt1 (57.87 %) +2.8% - BM_ZFlat/10 525320 514522 232.0MB/s txt2 (61.93 %) +2.1% - BM_ZFlat/11 1596591 1551636 262.3MB/s txt3 (54.92 %) +2.9% - BM_ZFlat/12 2134523 2094033 219.5MB/s txt4 (66.22 %) +1.9% - BM_ZFlat/13 593024 587869 832.6MB/s bin (18.11 %) +0.9% - BM_ZFlat/14 114746 110666 329.5MB/s sum (48.96 %) +3.7% - BM_ZFlat/15 14376 14485 278.3MB/s man (59.36 %) -0.8% - BM_ZFlat/16 167908 150070 753.6MB/s pb (19.64 %) +11.9% - BM_ZFlat/17 460228 442253 397.5MB/s gaviota (37.72 %) +4.1% - BM_ZCord/0 164896 160241 609.4MB/s html +2.9% - BM_ZCord/1 2070239 2043492 327.7MB/s urls +1.3% - BM_ZCord/2 54402 47002 2.5GB/s jpg +15.7% - BM_ZCord/3 85871 83832 1073.1MB/s pdf +2.4% - BM_ZCord/4 664078 648825 602.0MB/s html4 +2.4% - BM_ZDataBuffer/0 174874 172549 566.0MB/s html +1.3% - BM_ZDataBuffer/1 2134410 2139173 313.0MB/s urls -0.2% - BM_ZDataBuffer/2 71911 69551 1.7GB/s jpg +3.4% - BM_ZDataBuffer/3 98236 99727 902.1MB/s pdf -1.5% - BM_ZDataBuffer/4 710776 699104 558.8MB/s html4 +1.7% - Sum of all benchmarks 27358908 27200688 +0.6% - - -Sandy Bridge 2.6 GHz: - - Benchmark Base (ns) New (ns) Improvement - ------------------------------------------------------------------------------------------------- - BM_UFlat/0 49356 49018 1.9GB/s html +0.7% - BM_UFlat/1 516764 531955 1.2GB/s urls -2.9% - BM_UFlat/2 6982 7304 16.2GB/s jpg -4.4% - BM_UFlat/3 15285 15598 5.6GB/s pdf -2.0% - BM_UFlat/4 206557 206669 1.8GB/s html4 -0.1% - BM_UFlat/5 13681 13567 1.7GB/s cp +0.8% - BM_UFlat/6 6571 6592 1.6GB/s c -0.3% - BM_UFlat/7 2008 1994 1.7GB/s lsp +0.7% - BM_UFlat/8 775700 773286 1.2GB/s xls +0.3% - BM_UFlat/9 165578 164480 881.8MB/s txt1 +0.7% - BM_UFlat/10 143707 144139 828.2MB/s txt2 -0.3% - BM_UFlat/11 443026 436281 932.8MB/s txt3 +1.5% - BM_UFlat/12 603129 595856 771.2MB/s txt4 +1.2% - BM_UFlat/13 271682 270450 1.8GB/s bin +0.5% - BM_UFlat/14 26200 25666 1.4GB/s sum +2.1% - BM_UFlat/15 2620 2608 1.5GB/s man +0.5% - BM_UFlat/16 48908 47756 2.3GB/s pb +2.4% - BM_UFlat/17 174638 170346 1031.9MB/s gaviota +2.5% - BM_UValidate/0 31922 31898 3.0GB/s html +0.1% - BM_UValidate/1 341265 363554 1.8GB/s urls -6.1% - BM_UValidate/2 160 151 782.8GB/s jpg +6.0% - BM_UValidate/3 10402 10380 8.5GB/s pdf +0.2% - BM_UValidate/4 129490 130587 2.9GB/s html4 -0.8% - BM_UDataBuffer/0 59383 58736 1.6GB/s html +1.1% - BM_UDataBuffer/1 619222 637786 1049.8MB/s urls -2.9% - BM_UDataBuffer/2 10775 11941 9.9GB/s jpg -9.8% - BM_UDataBuffer/3 18002 17930 4.9GB/s pdf +0.4% - BM_UDataBuffer/4 259182 259306 1.5GB/s html4 -0.0% - BM_UCord/0 59379 57814 1.6GB/s html +2.7% - BM_UCord/1 598456 615162 1088.4MB/s urls -2.7% - BM_UCord/2 8519 8628 13.7GB/s jpg -1.3% - BM_UCord/3 18123 17537 5.0GB/s pdf +3.3% - BM_UCord/4 252375 252331 1.5GB/s html4 +0.0% - BM_UCordString/0 49494 49790 1.9GB/s html -0.6% - BM_UCordString/1 524659 541803 1.2GB/s urls -3.2% - BM_UCordString/2 8206 8354 14.2GB/s jpg -1.8% - BM_UCordString/3 17235 16537 5.3GB/s pdf +4.2% - BM_UCordString/4 210188 211072 1.8GB/s html4 -0.4% - BM_UCordValidate/0 31956 31587 3.0GB/s html +1.2% - BM_UCordValidate/1 340828 362141 1.8GB/s urls -5.9% - BM_UCordValidate/2 783 744 158.9GB/s jpg +5.2% - BM_UCordValidate/3 10543 10462 8.4GB/s pdf +0.8% - BM_UCordValidate/4 130150 129789 2.9GB/s html4 +0.3% - BM_ZFlat/0 113873 111200 878.2MB/s html (22.31 %) +2.4% - BM_ZFlat/1 1473023 1489858 449.4MB/s urls (47.77 %) -1.1% - BM_ZFlat/2 23569 19486 6.1GB/s jpg (99.87 %) +21.0% - BM_ZFlat/3 49178 48046 1.8GB/s pdf (82.07 %) +2.4% - BM_ZFlat/4 475063 469394 832.2MB/s html4 (22.51 %) +1.2% - BM_ZFlat/5 46910 46816 501.2MB/s cp (48.12 %) +0.2% - BM_ZFlat/6 16883 16916 628.6MB/s c (42.40 %) -0.2% - BM_ZFlat/7 5381 5447 651.5MB/s lsp (48.37 %) -1.2% - BM_ZFlat/8 1466870 1473861 666.3MB/s xls (41.23 %) -0.5% - BM_ZFlat/9 468006 464101 312.5MB/s txt1 (57.87 %) +0.8% - BM_ZFlat/10 408157 408957 291.9MB/s txt2 (61.93 %) -0.2% - BM_ZFlat/11 1253348 1232910 330.1MB/s txt3 (54.92 %) +1.7% - BM_ZFlat/12 1702373 1702977 269.8MB/s txt4 (66.22 %) -0.0% - BM_ZFlat/13 439792 438557 1116.0MB/s bin (18.11 %) +0.3% - BM_ZFlat/14 80766 78851 462.5MB/s sum (48.96 %) +2.4% - BM_ZFlat/15 7420 7542 534.5MB/s man (59.36 %) -1.6% - BM_ZFlat/16 112043 100126 1.1GB/s pb (19.64 %) +11.9% - BM_ZFlat/17 368877 357703 491.4MB/s gaviota (37.72 %) +3.1% - BM_ZCord/0 116402 113564 859.9MB/s html +2.5% - BM_ZCord/1 1507156 1519911 440.5MB/s urls -0.8% - BM_ZCord/2 39860 33686 3.5GB/s jpg +18.3% - BM_ZCord/3 56211 54694 1.6GB/s pdf +2.8% - BM_ZCord/4 485594 479212 815.1MB/s html4 +1.3% - BM_ZDataBuffer/0 123185 121572 803.3MB/s html +1.3% - BM_ZDataBuffer/1 1569111 1589380 421.3MB/s urls -1.3% - BM_ZDataBuffer/2 53143 49556 2.4GB/s jpg +7.2% - BM_ZDataBuffer/3 65725 66826 1.3GB/s pdf -1.6% - BM_ZDataBuffer/4 517871 514750 758.9MB/s html4 +0.6% - Sum of all benchmarks 20258879 20315484 -0.3% - - -AMD Instanbul 2.4 GHz: - - Benchmark Base (ns) New (ns) Improvement - ------------------------------------------------------------------------------------------------- - BM_UFlat/0 97120 96585 1011.1MB/s html +0.6% - BM_UFlat/1 917473 948016 706.3MB/s urls -3.2% - BM_UFlat/2 21496 23938 4.9GB/s jpg -10.2% - BM_UFlat/3 44751 45639 1.9GB/s pdf -1.9% - BM_UFlat/4 391950 391413 998.0MB/s html4 +0.1% - BM_UFlat/5 37366 37201 630.7MB/s cp +0.4% - BM_UFlat/6 18350 18318 580.5MB/s c +0.2% - BM_UFlat/7 5672 5661 626.9MB/s lsp +0.2% - BM_UFlat/8 1533390 1529441 642.1MB/s xls +0.3% - BM_UFlat/9 335477 336553 431.0MB/s txt1 -0.3% - BM_UFlat/10 285140 292080 408.7MB/s txt2 -2.4% - BM_UFlat/11 888507 894758 454.9MB/s txt3 -0.7% - BM_UFlat/12 1187643 1210928 379.5MB/s txt4 -1.9% - BM_UFlat/13 493717 507447 964.5MB/s bin -2.7% - BM_UFlat/14 61740 60870 599.1MB/s sum +1.4% - BM_UFlat/15 7211 7187 560.9MB/s man +0.3% - BM_UFlat/16 97435 93100 1.2GB/s pb +4.7% - BM_UFlat/17 362662 356395 493.2MB/s gaviota +1.8% - BM_UValidate/0 47475 47118 2.0GB/s html +0.8% - BM_UValidate/1 501304 529741 1.2GB/s urls -5.4% - BM_UValidate/2 276 243 486.2GB/s jpg +13.6% - BM_UValidate/3 16361 16261 5.4GB/s pdf +0.6% - BM_UValidate/4 190741 190353 2.0GB/s html4 +0.2% - BM_UDataBuffer/0 111080 109771 889.6MB/s html +1.2% - BM_UDataBuffer/1 1051035 1085999 616.5MB/s urls -3.2% - BM_UDataBuffer/2 25801 25463 4.6GB/s jpg +1.3% - BM_UDataBuffer/3 50493 49946 1.8GB/s pdf +1.1% - BM_UDataBuffer/4 447258 444138 879.5MB/s html4 +0.7% - BM_UCord/0 109350 107909 905.0MB/s html +1.3% - BM_UCord/1 1023396 1054964 634.7MB/s urls -3.0% - BM_UCord/2 25292 24371 4.9GB/s jpg +3.8% - BM_UCord/3 48955 49736 1.8GB/s pdf -1.6% - BM_UCord/4 440452 437331 893.2MB/s html4 +0.7% - BM_UCordString/0 98511 98031 996.2MB/s html +0.5% - BM_UCordString/1 933230 963495 694.9MB/s urls -3.1% - BM_UCordString/2 23311 24076 4.9GB/s jpg -3.2% - BM_UCordString/3 45568 46196 1.9GB/s pdf -1.4% - BM_UCordString/4 397791 396934 984.1MB/s html4 +0.2% - BM_UCordValidate/0 47537 46921 2.0GB/s html +1.3% - BM_UCordValidate/1 505071 532716 1.2GB/s urls -5.2% - BM_UCordValidate/2 1663 1621 72.9GB/s jpg +2.6% - BM_UCordValidate/3 16890 16926 5.2GB/s pdf -0.2% - BM_UCordValidate/4 192365 191984 2.0GB/s html4 +0.2% - BM_ZFlat/0 184708 179103 545.3MB/s html (22.31 %) +3.1% - BM_ZFlat/1 2293864 2302950 290.7MB/s urls (47.77 %) -0.4% - BM_ZFlat/2 52852 47618 2.5GB/s jpg (99.87 %) +11.0% - BM_ZFlat/3 100766 96179 935.3MB/s pdf (82.07 %) +4.8% - BM_ZFlat/4 741220 727977 536.6MB/s html4 (22.51 %) +1.8% - BM_ZFlat/5 85402 85418 274.7MB/s cp (48.12 %) -0.0% - BM_ZFlat/6 36558 36494 291.4MB/s c (42.40 %) +0.2% - BM_ZFlat/7 12706 12507 283.7MB/s lsp (48.37 %) +1.6% - BM_ZFlat/8 2336823 2335688 420.5MB/s xls (41.23 %) +0.0% - BM_ZFlat/9 701804 681153 212.9MB/s txt1 (57.87 %) +3.0% - BM_ZFlat/10 606700 597194 199.9MB/s txt2 (61.93 %) +1.6% - BM_ZFlat/11 1852283 1803238 225.7MB/s txt3 (54.92 %) +2.7% - BM_ZFlat/12 2475527 2443354 188.1MB/s txt4 (66.22 %) +1.3% - BM_ZFlat/13 694497 696654 702.6MB/s bin (18.11 %) -0.3% - BM_ZFlat/14 136929 129855 280.8MB/s sum (48.96 %) +5.4% - BM_ZFlat/15 17172 17124 235.4MB/s man (59.36 %) +0.3% - BM_ZFlat/16 190364 171763 658.4MB/s pb (19.64 %) +10.8% - BM_ZFlat/17 567285 555190 316.6MB/s gaviota (37.72 %) +2.2% - BM_ZCord/0 193490 187031 522.1MB/s html +3.5% - BM_ZCord/1 2427537 2415315 277.2MB/s urls +0.5% - BM_ZCord/2 85378 81412 1.5GB/s jpg +4.9% - BM_ZCord/3 121898 119419 753.3MB/s pdf +2.1% - BM_ZCord/4 779564 762961 512.0MB/s html4 +2.2% - BM_ZDataBuffer/0 213820 207272 471.1MB/s html +3.2% - BM_ZDataBuffer/1 2589010 2586495 258.9MB/s urls +0.1% - BM_ZDataBuffer/2 121871 118885 1018.4MB/s jpg +2.5% - BM_ZDataBuffer/3 145382 145986 616.2MB/s pdf -0.4% - BM_ZDataBuffer/4 868117 852754 458.1MB/s html4 +1.8% - Sum of all benchmarks 33771833 33744763 +0.1% - ------------------------------------------------------------------------- -r70 | snappy.mirrorbot@gmail.com | 2013-01-06 20:21:26 +0100 (Sun, 06 Jan 2013) | 6 lines - -Adjust the Snappy open-source distribution for the changes in Google's -internal file API. - -R=sanjay - - ------------------------------------------------------------------------- -r69 | snappy.mirrorbot@gmail.com | 2013-01-04 12:54:20 +0100 (Fri, 04 Jan 2013) | 15 lines - -Change a few ORs to additions where they don't matter. This helps the compiler -use the LEA instruction more efficiently, since e.g. a + (b << 2) can be encoded -as one instruction. Even more importantly, it can constant-fold the -COPY_* enums together with the shifted negative constants, which also saves -some instructions. (We don't need it for LITERAL, since it happens to be 0.) - -I am unsure why the compiler couldn't do this itself, but the theory is that -it cannot prove that len-1 and len-4 cannot underflow/wrap, and thus can't -do the optimization safely. - -The gains are small but measurable; 0.5-1.0% over the BM_Z* benchmarks -(measured on Westmere, Sandy Bridge and Istanbul). - -R=sanjay - ------------------------------------------------------------------------- -r68 | snappy.mirrorbot@gmail.com | 2012-10-08 13:37:16 +0200 (Mon, 08 Oct 2012) | 5 lines - -Stop giving -Werror to automake, due to an incompatibility between current -versions of libtool and automake on non-GNU platforms (e.g. Mac OS X). - -R=sanjay - ------------------------------------------------------------------------- -r67 | snappy.mirrorbot@gmail.com | 2012-08-17 15:54:47 +0200 (Fri, 17 Aug 2012) | 5 lines - -Fix public issue 66: Document GetUncompressedLength better, in particular that -it leaves the source in a state that's not appropriate for RawUncompress. - -R=sanjay - ------------------------------------------------------------------------- -r66 | snappy.mirrorbot@gmail.com | 2012-07-31 13:44:44 +0200 (Tue, 31 Jul 2012) | 5 lines - -Fix public issue 64: Check for at configure time, -since MSVC seemingly does not have it. - -R=sanjay - ------------------------------------------------------------------------- -r65 | snappy.mirrorbot@gmail.com | 2012-07-04 11:34:48 +0200 (Wed, 04 Jul 2012) | 10 lines - -Handle the case where gettimeofday() goes backwards or returns the same value -twice; it could cause division by zero in the unit test framework. -(We already had one fix for this in place, but it was incomplete.) - -This could in theory happen on any system, since there are few guarantees -about gettimeofday(), but seems to only happen in practice on GNU/Hurd, where -gettimeofday() is cached and only updated ever so often. - -R=sanjay - ------------------------------------------------------------------------- -r64 | snappy.mirrorbot@gmail.com | 2012-07-04 11:28:33 +0200 (Wed, 04 Jul 2012) | 6 lines - -Mark ARMv4 as not supporting unaligned accesses (not just ARMv5 and ARMv6); -apparently Debian still targets these by default, giving us segfaults on -armel. - -R=sanjay - ------------------------------------------------------------------------- -r63 | snappy.mirrorbot@gmail.com | 2012-05-22 11:46:05 +0200 (Tue, 22 May 2012) | 5 lines - -Fix public bug #62: Remove an extraneous comma at the end of an enum list, -causing compile errors when embedded in Mozilla on OpenBSD. - -R=sanjay - ------------------------------------------------------------------------- -r62 | snappy.mirrorbot@gmail.com | 2012-05-22 11:32:50 +0200 (Tue, 22 May 2012) | 8 lines - -Snappy library no longer depends on iostream. - -Achieved by moving logging macro definitions to a test-only -header file, and by changing non-test code to use assert, -fprintf, and abort instead of LOG/CHECK macros. - -R=sesse - ------------------------------------------------------------------------- -r61 | snappy.mirrorbot@gmail.com | 2012-02-24 16:46:37 +0100 (Fri, 24 Feb 2012) | 4 lines - -Release Snappy 1.0.5. - -R=sanjay - ------------------------------------------------------------------------- -r60 | snappy.mirrorbot@gmail.com | 2012-02-23 18:00:36 +0100 (Thu, 23 Feb 2012) | 57 lines - -For 32-bit platforms, do not try to accelerate multiple neighboring -32-bit loads with a 64-bit load during compression (it's not a win). - -The main target for this optimization is ARM, but 32-bit x86 gets -a small gain, too, although there is noise in the microbenchmarks. -It's a no-op for 64-bit x86. It does not affect decompression. - -Microbenchmark results on a Cortex-A9 1GHz, using g++ 4.6.2 (from -Ubuntu/Linaro), -O2 -DNDEBUG -Wa,-march=armv7a -mtune=cortex-a9 --mthumb-interwork, minimum 1000 iterations: - - Benchmark Time(ns) CPU(ns) Iterations - --------------------------------------------------- - BM_ZFlat/0 1158277 1160000 1000 84.2MB/s html (23.57 %) [ +4.3%] - BM_ZFlat/1 14861782 14860000 1000 45.1MB/s urls (50.89 %) [ +1.1%] - BM_ZFlat/2 393595 390000 1000 310.5MB/s jpg (99.88 %) [ +0.0%] - BM_ZFlat/3 650583 650000 1000 138.4MB/s pdf (82.13 %) [ +3.1%] - BM_ZFlat/4 4661480 4660000 1000 83.8MB/s html4 (23.55 %) [ +4.3%] - BM_ZFlat/5 491973 490000 1000 47.9MB/s cp (48.12 %) [ +2.0%] - BM_ZFlat/6 193575 192678 1038 55.2MB/s c (42.40 %) [ +9.0%] - BM_ZFlat/7 62343 62754 3187 56.5MB/s lsp (48.37 %) [ +2.6%] - BM_ZFlat/8 17708468 17710000 1000 55.5MB/s xls (41.34 %) [ -0.3%] - BM_ZFlat/9 3755345 3760000 1000 38.6MB/s txt1 (59.81 %) [ +8.2%] - BM_ZFlat/10 3324217 3320000 1000 36.0MB/s txt2 (64.07 %) [ +4.2%] - BM_ZFlat/11 10139932 10140000 1000 40.1MB/s txt3 (57.11 %) [ +6.4%] - BM_ZFlat/12 13532109 13530000 1000 34.0MB/s txt4 (68.35 %) [ +5.0%] - BM_ZFlat/13 4690847 4690000 1000 104.4MB/s bin (18.21 %) [ +4.1%] - BM_ZFlat/14 830682 830000 1000 43.9MB/s sum (51.88 %) [ +1.2%] - BM_ZFlat/15 84784 85011 2235 47.4MB/s man (59.36 %) [ +1.1%] - BM_ZFlat/16 1293254 1290000 1000 87.7MB/s pb (23.15 %) [ +2.3%] - BM_ZFlat/17 2775155 2780000 1000 63.2MB/s gaviota (38.27 %) [+12.2%] - -Core i7 in 32-bit mode (only one run and 100 iterations, though, so noisy): - - Benchmark Time(ns) CPU(ns) Iterations - --------------------------------------------------- - BM_ZFlat/0 227582 223464 3043 437.0MB/s html (23.57 %) [ +7.4%] - BM_ZFlat/1 2982430 2918455 233 229.4MB/s urls (50.89 %) [ +2.9%] - BM_ZFlat/2 46967 46658 15217 2.5GB/s jpg (99.88 %) [ +0.0%] - BM_ZFlat/3 115298 114864 5833 783.2MB/s pdf (82.13 %) [ +1.5%] - BM_ZFlat/4 913440 899743 778 434.2MB/s html4 (23.55 %) [ +0.3%] - BM_ZFlat/5 110302 108571 7000 216.1MB/s cp (48.12 %) [ +0.0%] - BM_ZFlat/6 44409 43372 15909 245.2MB/s c (42.40 %) [ +0.8%] - BM_ZFlat/7 15713 15643 46667 226.9MB/s lsp (48.37 %) [ +2.7%] - BM_ZFlat/8 2625539 2602230 269 377.4MB/s xls (41.34 %) [ +1.4%] - BM_ZFlat/9 808884 811429 875 178.8MB/s txt1 (59.81 %) [ -3.9%] - BM_ZFlat/10 709532 700000 1000 170.5MB/s txt2 (64.07 %) [ +0.0%] - BM_ZFlat/11 2177682 2162162 333 188.2MB/s txt3 (57.11 %) [ -1.4%] - BM_ZFlat/12 2849640 2840000 250 161.8MB/s txt4 (68.35 %) [ -1.4%] - BM_ZFlat/13 849760 835476 778 585.8MB/s bin (18.21 %) [ +1.2%] - BM_ZFlat/14 165940 164571 4375 221.6MB/s sum (51.88 %) [ +1.4%] - BM_ZFlat/15 20939 20571 35000 196.0MB/s man (59.36 %) [ +2.1%] - BM_ZFlat/16 239209 236544 2917 478.1MB/s pb (23.15 %) [ +4.2%] - BM_ZFlat/17 616206 610000 1000 288.2MB/s gaviota (38.27 %) [ -1.6%] - -R=sanjay - ------------------------------------------------------------------------- -r59 | snappy.mirrorbot@gmail.com | 2012-02-21 18:02:17 +0100 (Tue, 21 Feb 2012) | 107 lines - -Enable the use of unaligned loads and stores for ARM-based architectures -where they are available (ARMv7 and higher). This gives a significant -speed boost on ARM, both for compression and decompression. -It should not affect x86 at all. - -There are more changes possible to speed up ARM, but it might not be -that easy to do without hurting x86 or making the code uglier. -Also, we de not try to use NEON yet. - -Microbenchmark results on a Cortex-A9 1GHz, using g++ 4.6.2 (from Ubuntu/Linaro), --O2 -DNDEBUG -Wa,-march=armv7a -mtune=cortex-a9 -mthumb-interwork: - -Benchmark Time(ns) CPU(ns) Iterations ---------------------------------------------------- -BM_UFlat/0 524806 529100 378 184.6MB/s html [+33.6%] -BM_UFlat/1 5139790 5200000 100 128.8MB/s urls [+28.8%] -BM_UFlat/2 86540 84166 1901 1.4GB/s jpg [ +0.6%] -BM_UFlat/3 215351 210176 904 428.0MB/s pdf [+29.8%] -BM_UFlat/4 2144490 2100000 100 186.0MB/s html4 [+33.3%] -BM_UFlat/5 194482 190000 1000 123.5MB/s cp [+36.2%] -BM_UFlat/6 91843 90175 2107 117.9MB/s c [+38.6%] -BM_UFlat/7 28535 28426 6684 124.8MB/s lsp [+34.7%] -BM_UFlat/8 9206600 9200000 100 106.7MB/s xls [+42.4%] -BM_UFlat/9 1865273 1886792 106 76.9MB/s txt1 [+32.5%] -BM_UFlat/10 1576809 1587301 126 75.2MB/s txt2 [+32.3%] -BM_UFlat/11 4968450 4900000 100 83.1MB/s txt3 [+32.7%] -BM_UFlat/12 6673970 6700000 100 68.6MB/s txt4 [+32.8%] -BM_UFlat/13 2391470 2400000 100 203.9MB/s bin [+29.2%] -BM_UFlat/14 334601 344827 522 105.8MB/s sum [+30.6%] -BM_UFlat/15 37404 38080 5252 105.9MB/s man [+33.8%] -BM_UFlat/16 535470 540540 370 209.2MB/s pb [+31.2%] -BM_UFlat/17 1875245 1886792 106 93.2MB/s gaviota [+37.8%] -BM_UValidate/0 178425 179533 1114 543.9MB/s html [ +2.7%] -BM_UValidate/1 2100450 2000000 100 334.8MB/s urls [ +5.0%] -BM_UValidate/2 1039 1044 172413 113.3GB/s jpg [ +3.4%] -BM_UValidate/3 59423 59470 3363 1.5GB/s pdf [ +7.8%] -BM_UValidate/4 760716 766283 261 509.8MB/s html4 [ +6.5%] -BM_ZFlat/0 1204632 1204819 166 81.1MB/s html (23.57 %) [+32.8%] -BM_ZFlat/1 15656190 15600000 100 42.9MB/s urls (50.89 %) [+27.6%] -BM_ZFlat/2 403336 410677 487 294.8MB/s jpg (99.88 %) [+16.5%] -BM_ZFlat/3 664073 671140 298 134.0MB/s pdf (82.13 %) [+28.4%] -BM_ZFlat/4 4961940 4900000 100 79.7MB/s html4 (23.55 %) [+30.6%] -BM_ZFlat/5 500664 501253 399 46.8MB/s cp (48.12 %) [+33.4%] -BM_ZFlat/6 217276 215982 926 49.2MB/s c (42.40 %) [+25.0%] -BM_ZFlat/7 64122 65487 3054 54.2MB/s lsp (48.37 %) [+36.1%] -BM_ZFlat/8 18045730 18000000 100 54.6MB/s xls (41.34 %) [+34.4%] -BM_ZFlat/9 4051530 4000000 100 36.3MB/s txt1 (59.81 %) [+25.0%] -BM_ZFlat/10 3451800 3500000 100 34.1MB/s txt2 (64.07 %) [+25.7%] -BM_ZFlat/11 11052340 11100000 100 36.7MB/s txt3 (57.11 %) [+24.3%] -BM_ZFlat/12 14538690 14600000 100 31.5MB/s txt4 (68.35 %) [+24.7%] -BM_ZFlat/13 5041850 5000000 100 97.9MB/s bin (18.21 %) [+32.0%] -BM_ZFlat/14 908840 909090 220 40.1MB/s sum (51.88 %) [+22.2%] -BM_ZFlat/15 86921 86206 1972 46.8MB/s man (59.36 %) [+42.2%] -BM_ZFlat/16 1312315 1315789 152 86.0MB/s pb (23.15 %) [+34.5%] -BM_ZFlat/17 3173120 3200000 100 54.9MB/s gaviota (38.27%) [+28.1%] - - -The move from 64-bit to 32-bit operations for the copies also affected 32-bit x86; -positive on the decompression side, and slightly negative on the compression side -(unless that is noise; I only ran once): - -Benchmark Time(ns) CPU(ns) Iterations ------------------------------------------------------ -BM_UFlat/0 86279 86140 7778 1.1GB/s html [ +7.5%] -BM_UFlat/1 839265 822622 778 813.9MB/s urls [ +9.4%] -BM_UFlat/2 9180 9143 87500 12.9GB/s jpg [ +1.2%] -BM_UFlat/3 35080 35000 20000 2.5GB/s pdf [+10.1%] -BM_UFlat/4 350318 345000 2000 1.1GB/s html4 [ +7.0%] -BM_UFlat/5 33808 33472 21212 701.0MB/s cp [ +9.0%] -BM_UFlat/6 15201 15214 46667 698.9MB/s c [+14.9%] -BM_UFlat/7 4652 4651 159091 762.9MB/s lsp [ +7.5%] -BM_UFlat/8 1285551 1282528 538 765.7MB/s xls [+10.7%] -BM_UFlat/9 282510 281690 2414 514.9MB/s txt1 [+13.6%] -BM_UFlat/10 243494 239286 2800 498.9MB/s txt2 [+14.4%] -BM_UFlat/11 743625 740000 1000 550.0MB/s txt3 [+14.3%] -BM_UFlat/12 999441 989717 778 464.3MB/s txt4 [+16.1%] -BM_UFlat/13 412402 410076 1707 1.2GB/s bin [ +7.3%] -BM_UFlat/14 54876 54000 10000 675.3MB/s sum [+13.0%] -BM_UFlat/15 6146 6100 100000 660.8MB/s man [+14.8%] -BM_UFlat/16 90496 90286 8750 1.2GB/s pb [ +4.0%] -BM_UFlat/17 292650 292000 2500 602.0MB/s gaviota [+18.1%] -BM_UValidate/0 49620 49699 14286 1.9GB/s html [ +0.0%] -BM_UValidate/1 501371 500000 1000 1.3GB/s urls [ +0.0%] -BM_UValidate/2 232 227 3043478 521.5GB/s jpg [ +1.3%] -BM_UValidate/3 17250 17143 43750 5.1GB/s pdf [ -1.3%] -BM_UValidate/4 198643 200000 3500 1.9GB/s html4 [ -0.9%] -BM_ZFlat/0 227128 229415 3182 425.7MB/s html (23.57 %) [ -1.4%] -BM_ZFlat/1 2970089 2960000 250 226.2MB/s urls (50.89 %) [ -1.9%] -BM_ZFlat/2 45683 44999 15556 2.6GB/s jpg (99.88 %) [ +2.2%] -BM_ZFlat/3 114661 113136 6364 795.1MB/s pdf (82.13 %) [ -1.5%] -BM_ZFlat/4 919702 914286 875 427.2MB/s html4 (23.55%) [ -1.3%] -BM_ZFlat/5 108189 108422 6364 216.4MB/s cp (48.12 %) [ -1.2%] -BM_ZFlat/6 44525 44000 15909 241.7MB/s c (42.40 %) [ -2.9%] -BM_ZFlat/7 15973 15857 46667 223.8MB/s lsp (48.37 %) [ +0.0%] -BM_ZFlat/8 2677888 2639405 269 372.1MB/s xls (41.34 %) [ -1.4%] -BM_ZFlat/9 800715 780000 1000 186.0MB/s txt1 (59.81 %) [ -0.4%] -BM_ZFlat/10 700089 700000 1000 170.5MB/s txt2 (64.07 %) [ -2.9%] -BM_ZFlat/11 2159356 2138365 318 190.3MB/s txt3 (57.11 %) [ -0.3%] -BM_ZFlat/12 2796143 2779923 259 165.3MB/s txt4 (68.35 %) [ -1.4%] -BM_ZFlat/13 856458 835476 778 585.8MB/s bin (18.21 %) [ -0.1%] -BM_ZFlat/14 166908 166857 4375 218.6MB/s sum (51.88 %) [ -1.4%] -BM_ZFlat/15 21181 20857 35000 193.3MB/s man (59.36 %) [ -0.8%] -BM_ZFlat/16 244009 239973 2917 471.3MB/s pb (23.15 %) [ -1.4%] -BM_ZFlat/17 596362 590000 1000 297.9MB/s gaviota (38.27%) [ +0.0%] - -R=sanjay - ------------------------------------------------------------------------- -r58 | snappy.mirrorbot@gmail.com | 2012-02-11 23:11:22 +0100 (Sat, 11 Feb 2012) | 9 lines - -Lower the size allocated in the "corrupted input" unit test from 256 MB -to 2 MB. This fixes issues with running the unit test on platforms with -little RAM (e.g. some ARM boards). - -Also, reactivate the 2 MB test for 64-bit platforms; there's no good -reason why it shouldn't be. - -R=sanjay - ------------------------------------------------------------------------- -r57 | snappy.mirrorbot@gmail.com | 2012-01-08 18:55:48 +0100 (Sun, 08 Jan 2012) | 2 lines - -Minor refactoring to accomodate changes in Google's internal code tree. - ------------------------------------------------------------------------- -r56 | snappy.mirrorbot@gmail.com | 2012-01-04 14:10:46 +0100 (Wed, 04 Jan 2012) | 19 lines - -Fix public issue r57: Fix most warnings with -Wall, mostly signed/unsigned -warnings. There are still some in the unit test, but the main .cc file should -be clean. We haven't enabled -Wall for the default build, since the unit test -is still not clean. - -This also fixes a real bug in the open-source implementation of -ReadFileToStringOrDie(); it would not detect errors correctly. - -I had to go through some pains to avoid performance loss as the types -were changed; I think there might still be some with 32-bit if and only if LFS -is enabled (ie., size_t is 64-bit), but for regular 32-bit and 64-bit I can't -see any losses, and I've diffed the generated GCC assembler between the old and -new code without seeing any significant choices. If anything, it's ever so -slightly faster. - -This may or may not enable compression of very large blocks (>2^32 bytes) -when size_t is 64-bit, but I haven't checked, and it is still not a supported -case. - ------------------------------------------------------------------------- -r55 | snappy.mirrorbot@gmail.com | 2012-01-04 11:46:39 +0100 (Wed, 04 Jan 2012) | 6 lines - -Add a framing format description. We do not have any implementation of this at -the current point, but there seems to be enough of a general interest in the -topic (cf. public bug #34). - -R=csilvers,sanjay - ------------------------------------------------------------------------- -r54 | snappy.mirrorbot@gmail.com | 2011-12-05 22:27:26 +0100 (Mon, 05 Dec 2011) | 81 lines - -Speed up decompression by moving the refill check to the end of the loop. - -This seems to work because in most of the branches, the compiler can evaluate -“ip_limit_ - ip” in a more efficient way than reloading ip_limit_ from memory -(either by already having the entire expression in a register, or reconstructing -it from “avail”, or something else). Memory loads, even from L1, are seemingly -costly in the big picture at the current decompression speeds. - -Microbenchmarks (64-bit, opt mode): - -Westmere (Intel Core i7): - - Benchmark Time(ns) CPU(ns) Iterations - -------------------------------------------- - BM_UFlat/0 74492 74491 187894 1.3GB/s html [ +5.9%] - BM_UFlat/1 712268 712263 19644 940.0MB/s urls [ +3.8%] - BM_UFlat/2 10591 10590 1000000 11.2GB/s jpg [ -6.8%] - BM_UFlat/3 29643 29643 469915 3.0GB/s pdf [ +7.9%] - BM_UFlat/4 304669 304667 45930 1.3GB/s html4 [ +4.8%] - BM_UFlat/5 28508 28507 490077 823.1MB/s cp [ +4.0%] - BM_UFlat/6 12415 12415 1000000 856.5MB/s c [ +8.6%] - BM_UFlat/7 3415 3415 4084723 1039.0MB/s lsp [+18.0%] - BM_UFlat/8 979569 979563 14261 1002.5MB/s xls [ +5.8%] - BM_UFlat/9 230150 230148 60934 630.2MB/s txt1 [ +5.2%] - BM_UFlat/10 197167 197166 71135 605.5MB/s txt2 [ +4.7%] - BM_UFlat/11 607394 607390 23041 670.1MB/s txt3 [ +5.6%] - BM_UFlat/12 808502 808496 17316 568.4MB/s txt4 [ +5.0%] - BM_UFlat/13 372791 372788 37564 1.3GB/s bin [ +3.3%] - BM_UFlat/14 44541 44541 313969 818.8MB/s sum [ +5.7%] - BM_UFlat/15 4833 4833 2898697 834.1MB/s man [ +4.8%] - BM_UFlat/16 79855 79855 175356 1.4GB/s pb [ +4.8%] - BM_UFlat/17 245845 245843 56838 715.0MB/s gaviota [ +5.8%] - -Clovertown (Intel Core 2): - - Benchmark Time(ns) CPU(ns) Iterations - -------------------------------------------- - BM_UFlat/0 107911 107890 100000 905.1MB/s html [ +2.2%] - BM_UFlat/1 1011237 1011041 10000 662.3MB/s urls [ +2.5%] - BM_UFlat/2 26775 26770 523089 4.4GB/s jpg [ +0.0%] - BM_UFlat/3 48103 48095 290618 1.8GB/s pdf [ +3.4%] - BM_UFlat/4 437724 437644 31937 892.6MB/s html4 [ +2.1%] - BM_UFlat/5 39607 39600 358284 592.5MB/s cp [ +2.4%] - BM_UFlat/6 18227 18224 768191 583.5MB/s c [ +2.7%] - BM_UFlat/7 5171 5170 2709437 686.4MB/s lsp [ +3.9%] - BM_UFlat/8 1560291 1559989 8970 629.5MB/s xls [ +3.6%] - BM_UFlat/9 335401 335343 41731 432.5MB/s txt1 [ +3.0%] - BM_UFlat/10 287014 286963 48758 416.0MB/s txt2 [ +2.8%] - BM_UFlat/11 888522 888356 15752 458.1MB/s txt3 [ +2.9%] - BM_UFlat/12 1186600 1186378 10000 387.3MB/s txt4 [ +3.1%] - BM_UFlat/13 572295 572188 24468 855.4MB/s bin [ +2.1%] - BM_UFlat/14 64060 64049 218401 569.4MB/s sum [ +4.1%] - BM_UFlat/15 7264 7263 1916168 555.0MB/s man [ +1.4%] - BM_UFlat/16 108853 108836 100000 1039.1MB/s pb [ +1.7%] - BM_UFlat/17 364289 364223 38419 482.6MB/s gaviota [ +4.9%] - -Barcelona (AMD Opteron): - - Benchmark Time(ns) CPU(ns) Iterations - -------------------------------------------- - BM_UFlat/0 103900 103871 100000 940.2MB/s html [ +8.3%] - BM_UFlat/1 1000435 1000107 10000 669.5MB/s urls [ +6.6%] - BM_UFlat/2 24659 24652 567362 4.8GB/s jpg [ +0.1%] - BM_UFlat/3 48206 48193 291121 1.8GB/s pdf [ +5.0%] - BM_UFlat/4 421980 421850 33174 926.0MB/s html4 [ +7.3%] - BM_UFlat/5 40368 40357 346994 581.4MB/s cp [ +8.7%] - BM_UFlat/6 19836 19830 708695 536.2MB/s c [ +8.0%] - BM_UFlat/7 6100 6098 2292774 581.9MB/s lsp [ +9.0%] - BM_UFlat/8 1693093 1692514 8261 580.2MB/s xls [ +8.0%] - BM_UFlat/9 365991 365886 38225 396.4MB/s txt1 [ +7.1%] - BM_UFlat/10 311330 311238 44950 383.6MB/s txt2 [ +7.6%] - BM_UFlat/11 975037 974737 14376 417.5MB/s txt3 [ +6.9%] - BM_UFlat/12 1303558 1303175 10000 352.6MB/s txt4 [ +7.3%] - BM_UFlat/13 517448 517290 27144 946.2MB/s bin [ +5.5%] - BM_UFlat/14 66537 66518 210352 548.3MB/s sum [ +7.5%] - BM_UFlat/15 7976 7974 1760383 505.6MB/s man [ +5.6%] - BM_UFlat/16 103121 103092 100000 1097.0MB/s pb [ +8.7%] - BM_UFlat/17 391431 391314 35733 449.2MB/s gaviota [ +6.5%] - -R=sanjay - ------------------------------------------------------------------------- -r53 | snappy.mirrorbot@gmail.com | 2011-11-23 12:14:17 +0100 (Wed, 23 Nov 2011) | 88 lines - -Speed up decompression by making the fast path for literals faster. - -We do the fast-path step as soon as possible; in fact, as soon as we know the -literal length. Since we usually hit the fast path, we can then skip the checks -for long literals and available input space (beyond what the fast path check -already does). - -Note that this changes the decompression Writer API; however, it does not -change the ABI, since writers are always templatized and as such never -cross compilation units. The new API is slightly more general, in that it -doesn't hard-code the value 16. Note that we also take care to check -for len <= 16 first, since the other two checks almost always succeed -(so we don't want to waste time checking for them until we have to). - -The improvements are most marked on Nehalem, but are generally positive -on other platforms as well. All microbenchmarks are 64-bit, opt. - -Clovertown (Core 2): - - Benchmark Time(ns) CPU(ns) Iterations - -------------------------------------------- - BM_UFlat/0 110226 110224 100000 886.0MB/s html [ +1.5%] - BM_UFlat/1 1036523 1036508 10000 646.0MB/s urls [ -0.8%] - BM_UFlat/2 26775 26775 522570 4.4GB/s jpg [ +0.0%] - BM_UFlat/3 49738 49737 280974 1.8GB/s pdf [ +0.3%] - BM_UFlat/4 446790 446792 31334 874.3MB/s html4 [ +0.8%] - BM_UFlat/5 40561 40562 350424 578.5MB/s cp [ +1.3%] - BM_UFlat/6 18722 18722 746903 568.0MB/s c [ +1.4%] - BM_UFlat/7 5373 5373 2608632 660.5MB/s lsp [ +8.3%] - BM_UFlat/8 1615716 1615718 8670 607.8MB/s xls [ +2.0%] - BM_UFlat/9 345278 345281 40481 420.1MB/s txt1 [ +1.4%] - BM_UFlat/10 294855 294855 47452 404.9MB/s txt2 [ +1.6%] - BM_UFlat/11 914263 914263 15316 445.2MB/s txt3 [ +1.1%] - BM_UFlat/12 1222694 1222691 10000 375.8MB/s txt4 [ +1.4%] - BM_UFlat/13 584495 584489 23954 837.4MB/s bin [ -0.6%] - BM_UFlat/14 66662 66662 210123 547.1MB/s sum [ +1.2%] - BM_UFlat/15 7368 7368 1881856 547.1MB/s man [ +4.0%] - BM_UFlat/16 110727 110726 100000 1021.4MB/s pb [ +2.3%] - BM_UFlat/17 382138 382141 36616 460.0MB/s gaviota [ -0.7%] - -Westmere (Core i7): - - Benchmark Time(ns) CPU(ns) Iterations - -------------------------------------------- - BM_UFlat/0 78861 78853 177703 1.2GB/s html [ +2.1%] - BM_UFlat/1 739560 739491 18912 905.4MB/s urls [ +3.4%] - BM_UFlat/2 9867 9866 1419014 12.0GB/s jpg [ +3.4%] - BM_UFlat/3 31989 31986 438385 2.7GB/s pdf [ +0.2%] - BM_UFlat/4 319406 319380 43771 1.2GB/s html4 [ +1.9%] - BM_UFlat/5 29639 29636 472862 791.7MB/s cp [ +5.2%] - BM_UFlat/6 13478 13477 1000000 789.0MB/s c [ +2.3%] - BM_UFlat/7 4030 4029 3475364 880.7MB/s lsp [ +8.7%] - BM_UFlat/8 1036585 1036492 10000 947.5MB/s xls [ +6.9%] - BM_UFlat/9 242127 242105 57838 599.1MB/s txt1 [ +3.0%] - BM_UFlat/10 206499 206480 67595 578.2MB/s txt2 [ +3.4%] - BM_UFlat/11 641635 641570 21811 634.4MB/s txt3 [ +2.4%] - BM_UFlat/12 848847 848769 16443 541.4MB/s txt4 [ +3.1%] - BM_UFlat/13 384968 384938 36366 1.2GB/s bin [ +0.3%] - BM_UFlat/14 47106 47101 297770 774.3MB/s sum [ +4.4%] - BM_UFlat/15 5063 5063 2772202 796.2MB/s man [ +7.7%] - BM_UFlat/16 83663 83656 167697 1.3GB/s pb [ +1.8%] - BM_UFlat/17 260224 260198 53823 675.6MB/s gaviota [ -0.5%] - -Barcelona (Opteron): - - Benchmark Time(ns) CPU(ns) Iterations - -------------------------------------------- - BM_UFlat/0 112490 112457 100000 868.4MB/s html [ -0.4%] - BM_UFlat/1 1066719 1066339 10000 627.9MB/s urls [ +1.0%] - BM_UFlat/2 24679 24672 563802 4.8GB/s jpg [ +0.7%] - BM_UFlat/3 50603 50589 277285 1.7GB/s pdf [ +2.6%] - BM_UFlat/4 452982 452849 30900 862.6MB/s html4 [ -0.2%] - BM_UFlat/5 43860 43848 319554 535.1MB/s cp [ +1.2%] - BM_UFlat/6 21419 21413 653573 496.6MB/s c [ +1.0%] - BM_UFlat/7 6646 6645 2105405 534.1MB/s lsp [ +0.3%] - BM_UFlat/8 1828487 1827886 7658 537.3MB/s xls [ +2.6%] - BM_UFlat/9 391824 391714 35708 370.3MB/s txt1 [ +2.2%] - BM_UFlat/10 334913 334816 41885 356.6MB/s txt2 [ +1.7%] - BM_UFlat/11 1042062 1041674 10000 390.7MB/s txt3 [ +1.1%] - BM_UFlat/12 1398902 1398456 10000 328.6MB/s txt4 [ +1.7%] - BM_UFlat/13 545706 545530 25669 897.2MB/s bin [ -0.4%] - BM_UFlat/14 71512 71505 196035 510.0MB/s sum [ +1.4%] - BM_UFlat/15 8422 8421 1665036 478.7MB/s man [ +2.6%] - BM_UFlat/16 112053 112048 100000 1009.3MB/s pb [ -0.4%] - BM_UFlat/17 416723 416713 33612 421.8MB/s gaviota [ -2.0%] - -R=sanjay - ------------------------------------------------------------------------- -r52 | snappy.mirrorbot@gmail.com | 2011-11-08 15:46:39 +0100 (Tue, 08 Nov 2011) | 5 lines - -Fix public issue #53: Update the README to the API we actually open-sourced -with. - -R=sanjay - ------------------------------------------------------------------------- -r51 | snappy.mirrorbot@gmail.com | 2011-10-05 14:27:12 +0200 (Wed, 05 Oct 2011) | 5 lines - -In the format description, use a clearer example to emphasize that varints are -stored in little-endian. Patch from Christian von Roques. - -R=csilvers - ------------------------------------------------------------------------- -r50 | snappy.mirrorbot@gmail.com | 2011-09-15 21:34:06 +0200 (Thu, 15 Sep 2011) | 4 lines - -Release Snappy 1.0.4. - -R=sanjay - ------------------------------------------------------------------------- -r49 | snappy.mirrorbot@gmail.com | 2011-09-15 11:50:05 +0200 (Thu, 15 Sep 2011) | 5 lines - -Fix public issue #50: Include generic byteswap macros. -Also include Solaris 10 and FreeBSD versions. - -R=csilvers - ------------------------------------------------------------------------- -r48 | snappy.mirrorbot@gmail.com | 2011-08-10 20:57:27 +0200 (Wed, 10 Aug 2011) | 5 lines - -Partially fix public issue 50: Remove an extra comma from the end of some -enum declarations, as it seems the Sun compiler does not like it. - -Based on patch by Travis Vitek. - ------------------------------------------------------------------------- -r47 | snappy.mirrorbot@gmail.com | 2011-08-10 20:44:16 +0200 (Wed, 10 Aug 2011) | 4 lines - -Use the right #ifdef test for sys/mman.h. - -Based on patch by Travis Vitek. - ------------------------------------------------------------------------- -r46 | snappy.mirrorbot@gmail.com | 2011-08-10 03:22:09 +0200 (Wed, 10 Aug 2011) | 6 lines - -Fix public issue #47: Small comment cleanups in the unit test. - -Originally based on a patch by Patrick Pelletier. - -R=sanjay - ------------------------------------------------------------------------- -r45 | snappy.mirrorbot@gmail.com | 2011-08-10 03:14:43 +0200 (Wed, 10 Aug 2011) | 8 lines - -Fix public issue #46: Format description said "3-byte offset" -instead of "4-byte offset" for the longest copies. - -Also fix an inconsistency in the heading for section 2.2.3. -Both patches by Patrick Pelletier. - -R=csilvers - ------------------------------------------------------------------------- -r44 | snappy.mirrorbot@gmail.com | 2011-06-28 13:40:25 +0200 (Tue, 28 Jun 2011) | 8 lines - -Fix public issue #44: Make the definition and declaration of CompressFragment -identical, even regarding cv-qualifiers. - -This is required to work around a bug in the Solaris Studio C++ compiler -(it does not properly disregard cv-qualifiers when doing name mangling). - -R=sanjay - ------------------------------------------------------------------------- -r43 | snappy.mirrorbot@gmail.com | 2011-06-04 12:19:05 +0200 (Sat, 04 Jun 2011) | 7 lines - -Correct an inaccuracy in the Snappy format description. -(I stumbled into this when changing the way we decompress literals.) - -R=csilvers - -Revision created by MOE tool push_codebase. - ------------------------------------------------------------------------- -r42 | snappy.mirrorbot@gmail.com | 2011-06-03 22:53:06 +0200 (Fri, 03 Jun 2011) | 50 lines - -Speed up decompression by removing a fast-path attempt. - -Whenever we try to enter a copy fast-path, there is a certain cost in checking -that all the preconditions are in place, but it's normally offset by the fact -that we can usually take the cheaper path. However, in a certain path we've -already established that "avail < literal_length", which usually means that -either the available space is small, or the literal is big. Both will disqualify -us from taking the fast path, and thus we take the hit from the precondition -checking without gaining much from having a fast path. Thus, simply don't try -the fast path in this situation -- we're already on a slow path anyway -(one where we need to refill more data from the reader). - -I'm a bit surprised at how much this gained; it could be that this path is -more common than I thought, or that the simpler structure somehow makes the -compiler happier. I haven't looked at the assembler, but it's a win across -the board on both Core 2, Core i7 and Opteron, at least for the cases we -typically care about. The gains seem to be the largest on Core i7, though. -Results from my Core i7 workstation: - - - Benchmark Time(ns) CPU(ns) Iterations - --------------------------------------------------- - BM_UFlat/0 73337 73091 190996 1.3GB/s html [ +1.7%] - BM_UFlat/1 696379 693501 20173 965.5MB/s urls [ +2.7%] - BM_UFlat/2 9765 9734 1472135 12.1GB/s jpg [ +0.7%] - BM_UFlat/3 29720 29621 472973 3.0GB/s pdf [ +1.8%] - BM_UFlat/4 294636 293834 47782 1.3GB/s html4 [ +2.3%] - BM_UFlat/5 28399 28320 494700 828.5MB/s cp [ +3.5%] - BM_UFlat/6 12795 12760 1000000 833.3MB/s c [ +1.2%] - BM_UFlat/7 3984 3973 3526448 893.2MB/s lsp [ +5.7%] - BM_UFlat/8 991996 989322 14141 992.6MB/s xls [ +3.3%] - BM_UFlat/9 228620 227835 61404 636.6MB/s txt1 [ +4.0%] - BM_UFlat/10 197114 196494 72165 607.5MB/s txt2 [ +3.5%] - BM_UFlat/11 605240 603437 23217 674.4MB/s txt3 [ +3.7%] - BM_UFlat/12 804157 802016 17456 573.0MB/s txt4 [ +3.9%] - BM_UFlat/13 347860 346998 40346 1.4GB/s bin [ +1.2%] - BM_UFlat/14 44684 44559 315315 818.4MB/s sum [ +2.3%] - BM_UFlat/15 5120 5106 2739726 789.4MB/s man [ +3.3%] - BM_UFlat/16 76591 76355 183486 1.4GB/s pb [ +2.8%] - BM_UFlat/17 238564 237828 58824 739.1MB/s gaviota [ +1.6%] - BM_UValidate/0 42194 42060 333333 2.3GB/s html [ -0.1%] - BM_UValidate/1 433182 432005 32407 1.5GB/s urls [ -0.1%] - BM_UValidate/2 197 196 71428571 603.3GB/s jpg [ +0.5%] - BM_UValidate/3 14494 14462 972222 6.1GB/s pdf [ +0.5%] - BM_UValidate/4 168444 167836 83832 2.3GB/s html4 [ +0.1%] - -R=jeff - -Revision created by MOE tool push_codebase. - ------------------------------------------------------------------------- -r41 | snappy.mirrorbot@gmail.com | 2011-06-03 22:47:14 +0200 (Fri, 03 Jun 2011) | 43 lines - -Speed up decompression by not needing a lookup table for literal items. - -Looking up into and decoding the values from char_table has long shown up as a -hotspot in the decompressor. While it turns out that it's hard to make a more -efficient decoder for the copy ops, the literals are simple enough that we can -decode them without needing a table lookup. (This means that 1/4 of the table -is now unused, although that in itself doesn't buy us anything.) - -The gains are small, but definitely present; some tests win as much as 10%, -but 1-4% is more typical. These results are from Core i7, in 64-bit mode; -Core 2 and Opteron show similar results. (I've run with more iterations -than unusual to make sure the smaller gains don't drown entirely in noise.) - - Benchmark Time(ns) CPU(ns) Iterations - --------------------------------------------------- - BM_UFlat/0 74665 74428 182055 1.3GB/s html [ +3.1%] - BM_UFlat/1 714106 711997 19663 940.4MB/s urls [ +4.4%] - BM_UFlat/2 9820 9789 1427115 12.1GB/s jpg [ -1.2%] - BM_UFlat/3 30461 30380 465116 2.9GB/s pdf [ +0.8%] - BM_UFlat/4 301445 300568 46512 1.3GB/s html4 [ +2.2%] - BM_UFlat/5 29338 29263 479452 801.8MB/s cp [ +1.6%] - BM_UFlat/6 13004 12970 1000000 819.9MB/s c [ +2.1%] - BM_UFlat/7 4180 4168 3349282 851.4MB/s lsp [ +1.3%] - BM_UFlat/8 1026149 1024000 10000 959.0MB/s xls [+10.7%] - BM_UFlat/9 237441 236830 59072 612.4MB/s txt1 [ +0.3%] - BM_UFlat/10 203966 203298 69307 587.2MB/s txt2 [ +0.8%] - BM_UFlat/11 627230 625000 22400 651.2MB/s txt3 [ +0.7%] - BM_UFlat/12 836188 833979 16787 551.0MB/s txt4 [ +1.3%] - BM_UFlat/13 351904 350750 39886 1.4GB/s bin [ +3.8%] - BM_UFlat/14 45685 45562 308370 800.4MB/s sum [ +5.9%] - BM_UFlat/15 5286 5270 2656546 764.9MB/s man [ +1.5%] - BM_UFlat/16 78774 78544 178117 1.4GB/s pb [ +4.3%] - BM_UFlat/17 242270 241345 58091 728.3MB/s gaviota [ +1.2%] - BM_UValidate/0 42149 42000 333333 2.3GB/s html [ -3.0%] - BM_UValidate/1 432741 431303 32483 1.5GB/s urls [ +7.8%] - BM_UValidate/2 198 197 71428571 600.7GB/s jpg [+16.8%] - BM_UValidate/3 14560 14521 965517 6.1GB/s pdf [ -4.1%] - BM_UValidate/4 169065 168671 83832 2.3GB/s html4 [ -2.9%] - -R=jeff - -Revision created by MOE tool push_codebase. - ------------------------------------------------------------------------- -r40 | snappy.mirrorbot@gmail.com | 2011-06-03 00:57:41 +0200 (Fri, 03 Jun 2011) | 2 lines - -Release Snappy 1.0.3. - ------------------------------------------------------------------------- -r39 | snappy.mirrorbot@gmail.com | 2011-06-02 20:06:54 +0200 (Thu, 02 Jun 2011) | 11 lines - -Remove an unneeded goto in the decompressor; it turns out that the -state of ip_ after decompression (or attempted decompresion) is -completely irrelevant, so we don't need the trailer. - -Performance is, as expected, mostly flat -- there's a curious ~3-5% -loss in the "lsp" test, but that test case is so short it is hard to say -anything definitive about why (most likely, it's some sort of -unrelated effect). - -R=jeff - ------------------------------------------------------------------------- -r38 | snappy.mirrorbot@gmail.com | 2011-06-02 19:59:40 +0200 (Thu, 02 Jun 2011) | 52 lines - -Speed up decompression by caching ip_. - -It is seemingly hard for the compiler to understand that ip_, the current input -pointer into the compressed data stream, can not alias on anything else, and -thus using it directly will incur memory traffic as it cannot be kept in a -register. The code already knew about this and cached it into a local -variable, but since Step() only decoded one tag, it had to move ip_ back into -place between every tag. This seems to have cost us a significant amount of -performance, so changing Step() into a function that decodes as much as it can -before it saves ip_ back and returns. (Note that Step() was already inlined, -so it is not the manual inlining that buys the performance here.) - -The wins are about 3-6% for Core 2, 6-13% on Core i7 and 5-12% on Opteron -(for plain array-to-array decompression, in 64-bit opt mode). - -There is a tiny difference in the behavior here; if an invalid literal is -encountered (ie., the writer refuses the Append() operation), ip_ will now -point to the byte past the tag byte, instead of where the literal was -originally thought to end. However, we don't use ip_ for anything after -DecompressAllTags() has returned, so this should not change external behavior -in any way. - -Microbenchmark results for Core i7, 64-bit (Opteron results are similar): - -Benchmark Time(ns) CPU(ns) Iterations ---------------------------------------------------- -BM_UFlat/0 79134 79110 8835 1.2GB/s html [ +6.2%] -BM_UFlat/1 786126 786096 891 851.8MB/s urls [+10.0%] -BM_UFlat/2 9948 9948 69125 11.9GB/s jpg [ -1.3%] -BM_UFlat/3 31999 31998 21898 2.7GB/s pdf [ +6.5%] -BM_UFlat/4 318909 318829 2204 1.2GB/s html4 [ +6.5%] -BM_UFlat/5 31384 31390 22363 747.5MB/s cp [ +9.2%] -BM_UFlat/6 14037 14034 49858 757.7MB/s c [+10.6%] -BM_UFlat/7 4612 4612 151395 769.5MB/s lsp [ +9.5%] -BM_UFlat/8 1203174 1203007 582 816.3MB/s xls [+19.3%] -BM_UFlat/9 253869 253955 2757 571.1MB/s txt1 [+11.4%] -BM_UFlat/10 219292 219290 3194 544.4MB/s txt2 [+12.1%] -BM_UFlat/11 672135 672131 1000 605.5MB/s txt3 [+11.2%] -BM_UFlat/12 902512 902492 776 509.2MB/s txt4 [+12.5%] -BM_UFlat/13 372110 371998 1881 1.3GB/s bin [ +5.8%] -BM_UFlat/14 50407 50407 10000 723.5MB/s sum [+13.5%] -BM_UFlat/15 5699 5701 100000 707.2MB/s man [+12.4%] -BM_UFlat/16 83448 83424 8383 1.3GB/s pb [ +5.7%] -BM_UFlat/17 256958 256963 2723 684.1MB/s gaviota [ +7.9%] -BM_UValidate/0 42795 42796 16351 2.2GB/s html [+25.8%] -BM_UValidate/1 490672 490622 1427 1.3GB/s urls [+22.7%] -BM_UValidate/2 237 237 2950297 499.0GB/s jpg [+24.9%] -BM_UValidate/3 14610 14611 47901 6.0GB/s pdf [+26.8%] -BM_UValidate/4 171973 171990 4071 2.2GB/s html4 [+25.7%] - - - ------------------------------------------------------------------------- -r37 | snappy.mirrorbot@gmail.com | 2011-05-17 10:48:25 +0200 (Tue, 17 May 2011) | 10 lines - - -Fix the numbering of the headlines in the Snappy format description. - -R=csilvers -DELTA=4 (0 added, 0 deleted, 4 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1906 - ------------------------------------------------------------------------- -r36 | snappy.mirrorbot@gmail.com | 2011-05-16 10:59:18 +0200 (Mon, 16 May 2011) | 12 lines - - -Fix public issue #32: Add compressed format documentation for Snappy. -This text is new, but an earlier version from Zeev Tarantov was used -as reference. - -R=csilvers -DELTA=112 (111 added, 0 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1867 - ------------------------------------------------------------------------- -r35 | snappy.mirrorbot@gmail.com | 2011-05-09 23:29:02 +0200 (Mon, 09 May 2011) | 12 lines - - -Fix public issue #39: Pick out the median runs based on CPU time, -not real time. Also, use nth_element instead of sort, since we -only need one element. - -R=csilvers -DELTA=5 (3 added, 0 deleted, 2 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1799 - ------------------------------------------------------------------------- -r34 | snappy.mirrorbot@gmail.com | 2011-05-09 23:28:45 +0200 (Mon, 09 May 2011) | 19 lines - - -Fix public issue #38: Make the microbenchmark framework handle -properly cases where gettimeofday() can stand return the same -result twice (as sometimes on GNU/Hurd) or go backwards -(as when the user adjusts the clock). We avoid a division-by-zero, -and put a lower bound on the number of iterations -- the same -amount as we use to calibrate. - -We should probably use CLOCK_MONOTONIC for platforms that support -it, to be robust against clock adjustments; we already use Windows' -monotonic timers. However, that's for a later changelist. - -R=csilvers -DELTA=7 (5 added, 0 deleted, 2 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1798 - ------------------------------------------------------------------------- -r33 | snappy.mirrorbot@gmail.com | 2011-05-04 01:22:52 +0200 (Wed, 04 May 2011) | 11 lines - - -Fix public issue #37: Only link snappy_unittest against -lz and other autodetected -libraries, not libsnappy.so (which doesn't need any such dependency). - -R=csilvers -DELTA=20 (14 added, 0 deleted, 6 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1710 - ------------------------------------------------------------------------- -r32 | snappy.mirrorbot@gmail.com | 2011-05-04 01:22:33 +0200 (Wed, 04 May 2011) | 11 lines - - -Release Snappy 1.0.2, to get the license change and various other fixes into -a release. - -R=csilvers -DELTA=239 (236 added, 0 deleted, 3 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1709 - ------------------------------------------------------------------------- -r31 | snappy.mirrorbot@gmail.com | 2011-04-26 14:34:55 +0200 (Tue, 26 Apr 2011) | 15 lines - - -Fix public issue #30: Stop using gettimeofday() altogether on Win32, -as MSVC doesn't include it. Replace with QueryPerformanceCounter(), -which is monotonic and probably reasonably high-resolution. -(Some machines have traditionally had bugs in QPC, but they should -be relatively rare these days, and there's really no much better -alternative that I know of.) - -R=csilvers -DELTA=74 (55 added, 19 deleted, 0 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1556 - ------------------------------------------------------------------------- -r30 | snappy.mirrorbot@gmail.com | 2011-04-26 14:34:37 +0200 (Tue, 26 Apr 2011) | 11 lines - - -Fix public issue #31: Don't reset PATH in autogen.sh; instead, do the trickery -we need for our own build system internally. - -R=csilvers -DELTA=16 (13 added, 1 deleted, 2 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1555 - ------------------------------------------------------------------------- -r29 | snappy.mirrorbot@gmail.com | 2011-04-16 00:55:56 +0200 (Sat, 16 Apr 2011) | 12 lines - - -When including , define WIN32_LEAN_AND_MEAN first, -so we won't pull in macro definitions of things like min() and max(), -which can conflict with . - -R=csilvers -DELTA=1 (1 added, 0 deleted, 0 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1485 - ------------------------------------------------------------------------- -r28 | snappy.mirrorbot@gmail.com | 2011-04-11 11:07:01 +0200 (Mon, 11 Apr 2011) | 15 lines - - -Fix public issue #29: Write CPU timing code for Windows, based on GetProcessTimes() -instead of getursage(). - -I thought I'd already committed this patch, so that the 1.0.1 release already -would have a Windows-compatible snappy_unittest, but I'd seemingly deleted it -instead, so this is a reconstruction. - -R=csilvers -DELTA=43 (39 added, 3 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1295 - ------------------------------------------------------------------------- -r27 | snappy.mirrorbot@gmail.com | 2011-04-08 11:51:53 +0200 (Fri, 08 Apr 2011) | 22 lines - - -Include C bindings of Snappy, contributed by Martin Gieseking. - -I've made a few changes since Martin's version; mostly style nits, but also -a semantic change -- most functions that return bool in the C++ version now -return an enum, to better match typical C (and zlib) semantics. - -I've kept the copyright notice, since Martin is obviously the author here; -he has signed the contributor license agreement, though, so this should not -hinder Google's use in the future. - -We'll need to update the libtool version number to match the added interface, -but as of http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html -I'm going to wait until public release. - -R=csilvers -DELTA=238 (233 added, 0 deleted, 5 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1294 - ------------------------------------------------------------------------- -r26 | snappy.mirrorbot@gmail.com | 2011-04-07 18:36:43 +0200 (Thu, 07 Apr 2011) | 13 lines - - -Replace geo.protodata with a newer version. - -The data compresses/decompresses slightly faster than the old data, and has -similar density. - -R=lookingbill -DELTA=1 (0 added, 0 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1288 - ------------------------------------------------------------------------- -r25 | snappy.mirrorbot@gmail.com | 2011-03-30 22:27:53 +0200 (Wed, 30 Mar 2011) | 12 lines - - -Fix public issue #27: Add HAVE_CONFIG_H tests around the config.h -inclusion in snappy-stubs-internal.h, which eases compiling outside the -automake/autoconf framework. - -R=csilvers -DELTA=5 (4 added, 1 deleted, 0 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1152 - ------------------------------------------------------------------------- -r24 | snappy.mirrorbot@gmail.com | 2011-03-30 22:27:39 +0200 (Wed, 30 Mar 2011) | 13 lines - - -Fix public issue #26: Take memory allocation and reallocation entirely out of the -Measure() loop. This gives all algorithms a small speed boost, except Snappy which -already didn't do reallocation (so the measurements were slightly biased in its -favor). - -R=csilvers -DELTA=92 (69 added, 9 deleted, 14 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1151 - ------------------------------------------------------------------------- -r23 | snappy.mirrorbot@gmail.com | 2011-03-30 22:25:09 +0200 (Wed, 30 Mar 2011) | 18 lines - - -Renamed "namespace zippy" to "namespace snappy" to reduce -the differences from the opensource code. Will make it easier -in the future to mix-and-match third-party code that uses -snappy with google code. - -Currently, csearch shows that the only external user of -"namespace zippy" is some bigtable code that accesses -a TEST variable, which is temporarily kept in the zippy -namespace. - -R=sesse -DELTA=123 (18 added, 3 deleted, 102 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1150 - ------------------------------------------------------------------------- -r22 | snappy.mirrorbot@gmail.com | 2011-03-29 00:17:04 +0200 (Tue, 29 Mar 2011) | 11 lines - - -Put back the final few lines of what was truncated during the -license header change. - -R=csilvers -DELTA=5 (4 added, 0 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1094 - ------------------------------------------------------------------------- -r21 | snappy.mirrorbot@gmail.com | 2011-03-26 03:34:34 +0100 (Sat, 26 Mar 2011) | 20 lines - - -Change on 2011-03-25 19:18:00-07:00 by sesse - - Replace the Apache 2.0 license header by the BSD-type license header; - somehow a lot of the files were missed in the last round. - - R=dannyb,csilvers - DELTA=147 (74 added, 2 deleted, 71 changed) - -Change on 2011-03-25 19:25:07-07:00 by sesse - - Unbreak the build; the relicensing removed a bit too much (only comments - were intended, but I also accidentially removed some of the top lines of - the actual source). - - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1072 - ------------------------------------------------------------------------- -r20 | snappy.mirrorbot@gmail.com | 2011-03-25 17:14:41 +0100 (Fri, 25 Mar 2011) | 10 lines - - -Change Snappy from the Apache 2.0 to a BSD-type license. - -R=dannyb -DELTA=328 (80 added, 184 deleted, 64 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1061 - ------------------------------------------------------------------------- -r19 | snappy.mirrorbot@gmail.com | 2011-03-25 01:39:01 +0100 (Fri, 25 Mar 2011) | 11 lines - - -Release Snappy 1.0.1, to soup up all the various small changes -that have been made since release. - -R=csilvers -DELTA=266 (260 added, 0 deleted, 6 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1057 - ------------------------------------------------------------------------- -r18 | snappy.mirrorbot@gmail.com | 2011-03-24 20:15:54 +0100 (Thu, 24 Mar 2011) | 11 lines - - -Fix a microbenchmark crash on mingw32; seemingly %lld is not universally -supported on Windows, and %I64d is recommended instead. - -R=csilvers -DELTA=6 (5 added, 0 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1034 - ------------------------------------------------------------------------- -r17 | snappy.mirrorbot@gmail.com | 2011-03-24 20:15:27 +0100 (Thu, 24 Mar 2011) | 13 lines - - -Fix public issue #19: Fix unit test when Google Test is installed but the -gflags package isn't (Google Test is not properly initialized). - -Patch by Martin Gieseking. - -R=csilvers -DELTA=2 (1 added, 0 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1033 - ------------------------------------------------------------------------- -r16 | snappy.mirrorbot@gmail.com | 2011-03-24 20:13:57 +0100 (Thu, 24 Mar 2011) | 15 lines - - -Make the unit test work on systems without mmap(). This is required for, -among others, Windows support. For Windows in specific, we could have used -CreateFileMapping/MapViewOfFile, but this should at least get us a bit closer -to compiling, and is of course also relevant for embedded systems with no MMU. - -(Part 2/2) - -R=csilvers -DELTA=15 (12 added, 3 deleted, 0 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1032 - ------------------------------------------------------------------------- -r15 | snappy.mirrorbot@gmail.com | 2011-03-24 20:12:27 +0100 (Thu, 24 Mar 2011) | 15 lines - - -Make the unit test work on systems without mmap(). This is required for, -among others, Windows support. For Windows in specific, we could have used -CreateFileMapping/MapViewOfFile, but this should at least get us a bit closer -to compiling, and is of course also relevant for embedded systems with no MMU. - -(Part 1/2) - -R=csilvers -DELTA=9 (8 added, 0 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1031 - ------------------------------------------------------------------------- -r14 | snappy.mirrorbot@gmail.com | 2011-03-24 00:17:36 +0100 (Thu, 24 Mar 2011) | 14 lines - - -Fix public issue #12: Don't keep autogenerated auto* files in Subversion; -it causes problems with others sending patches etc.. - -We can't get this 100% hermetic anyhow, due to files like lt~obsolete.m4, -so we can just as well go cleanly in the other direction. - -R=csilvers -DELTA=21038 (0 added, 21036 deleted, 2 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=1012 - ------------------------------------------------------------------------- -r13 | snappy.mirrorbot@gmail.com | 2011-03-23 18:50:49 +0100 (Wed, 23 Mar 2011) | 11 lines - - -Fix public issue tracker bug #3: Call AC_SUBST([LIBTOOL_DEPS]), or the rule -to rebuild libtool in Makefile.am won't work. - -R=csilvers -DELTA=1 (1 added, 0 deleted, 0 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=997 - ------------------------------------------------------------------------- -r12 | snappy.mirrorbot@gmail.com | 2011-03-23 12:16:39 +0100 (Wed, 23 Mar 2011) | 11 lines - - -Fix public issue #10: Don't add GTEST_CPPFLAGS to snappy_unittest_CXXFLAGS; -it's not needed (CPPFLAGS are always included when compiling). - -R=csilvers -DELTA=1 (0 added, 1 deleted, 0 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=994 - ------------------------------------------------------------------------- -r11 | snappy.mirrorbot@gmail.com | 2011-03-23 12:16:18 +0100 (Wed, 23 Mar 2011) | 11 lines - - -Fix public issue #9: Add -Wall -Werror to automake flags. -(This concerns automake itself, not the C++ compiler.) - -R=csilvers -DELTA=4 (3 added, 0 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=993 - ------------------------------------------------------------------------- -r10 | snappy.mirrorbot@gmail.com | 2011-03-23 12:13:37 +0100 (Wed, 23 Mar 2011) | 10 lines - - -Fix a typo in the Snappy README file. - -R=csilvers -DELTA=1 (0 added, 0 deleted, 1 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=992 - ------------------------------------------------------------------------- -r9 | snappy.mirrorbot@gmail.com | 2011-03-23 12:13:13 +0100 (Wed, 23 Mar 2011) | 11 lines - - -Fix public issue #6: Add a --with-gflags for disabling gflags autodetection -and using a manually given setting (use/don't use) instead. - -R=csilvers -DELTA=16 (13 added, 0 deleted, 3 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=991 - ------------------------------------------------------------------------- -r8 | snappy.mirrorbot@gmail.com | 2011-03-23 12:12:44 +0100 (Wed, 23 Mar 2011) | 12 lines - - -Fix public issue #5: Replace the EXTRA_LIBSNAPPY_LDFLAGS setup with something -slightly more standard, that also doesn't leak libtool command-line into -configure.ac. - -R=csilvers -DELTA=7 (0 added, 4 deleted, 3 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=990 - ------------------------------------------------------------------------- -r7 | snappy.mirrorbot@gmail.com | 2011-03-23 12:12:22 +0100 (Wed, 23 Mar 2011) | 10 lines - - -Fix public issue #4: Properly quote all macro arguments in configure.ac. - -R=csilvers -DELTA=16 (0 added, 0 deleted, 16 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=989 - ------------------------------------------------------------------------- -r6 | snappy.mirrorbot@gmail.com | 2011-03-23 12:11:54 +0100 (Wed, 23 Mar 2011) | 11 lines - - -Fix public issue #7: Don't use internal variables named ac_*, as those belong -to autoconf's namespace. - -R=csilvers -DELTA=6 (0 added, 0 deleted, 6 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=988 - ------------------------------------------------------------------------- -r5 | snappy.mirrorbot@gmail.com | 2011-03-23 12:11:09 +0100 (Wed, 23 Mar 2011) | 10 lines - - -Add missing licensing headers to a few files. (Part 2/2.) - -R=csilvers -DELTA=12 (12 added, 0 deleted, 0 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=987 - ------------------------------------------------------------------------- -r4 | snappy.mirrorbot@gmail.com | 2011-03-23 12:10:39 +0100 (Wed, 23 Mar 2011) | 10 lines - - -Add mising licensing headers to a few files. (Part 1/2.) - -R=csilvers -DELTA=24 (24 added, 0 deleted, 0 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=986 - ------------------------------------------------------------------------- -r3 | snappy.mirrorbot@gmail.com | 2011-03-23 12:10:04 +0100 (Wed, 23 Mar 2011) | 11 lines - - -Use the correct license file for the Apache 2.0 license; -spotted by Florian Weimer. - -R=csilvers -DELTA=202 (174 added, 0 deleted, 28 changed) - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION=985 - ------------------------------------------------------------------------- -r2 | snappy.mirrorbot@gmail.com | 2011-03-18 18:14:15 +0100 (Fri, 18 Mar 2011) | 6 lines - - - - -Revision created by MOE tool push_codebase. -MOE_MIGRATION= - ------------------------------------------------------------------------- -r1 | sesse@google.com | 2011-03-18 18:13:52 +0100 (Fri, 18 Mar 2011) | 2 lines - -Create trunk directory. - ------------------------------------------------------------------------- diff --git a/snappy-1.1.0/INSTALL b/snappy-1.1.0/INSTALL deleted file mode 100644 index a1e89e1..0000000 --- a/snappy-1.1.0/INSTALL +++ /dev/null @@ -1,370 +0,0 @@ -Installation Instructions -************************* - -Copyright (C) 1994-1996, 1999-2002, 2004-2011 Free Software Foundation, -Inc. - - Copying and distribution of this file, with or without modification, -are permitted in any medium without royalty provided the copyright -notice and this notice are preserved. This file is offered as-is, -without warranty of any kind. - -Basic Installation -================== - - Briefly, the shell commands `./configure; make; make install' should -configure, build, and install this package. The following -more-detailed instructions are generic; see the `README' file for -instructions specific to this package. Some packages provide this -`INSTALL' file but do not implement all of the features documented -below. The lack of an optional feature in a given package is not -necessarily a bug. More recommendations for GNU packages can be found -in *note Makefile Conventions: (standards)Makefile Conventions. - - The `configure' shell script attempts to guess correct values for -various system-dependent variables used during compilation. It uses -those values to create a `Makefile' in each directory of the package. -It may also create one or more `.h' files containing system-dependent -definitions. Finally, it creates a shell script `config.status' that -you can run in the future to recreate the current configuration, and a -file `config.log' containing compiler output (useful mainly for -debugging `configure'). - - It can also use an optional file (typically called `config.cache' -and enabled with `--cache-file=config.cache' or simply `-C') that saves -the results of its tests to speed up reconfiguring. Caching is -disabled by default to prevent problems with accidental use of stale -cache files. - - If you need to do unusual things to compile the package, please try -to figure out how `configure' could check whether to do them, and mail -diffs or instructions to the address given in the `README' so they can -be considered for the next release. If you are using the cache, and at -some point `config.cache' contains results you don't want to keep, you -may remove or edit it. - - The file `configure.ac' (or `configure.in') is used to create -`configure' by a program called `autoconf'. You need `configure.ac' if -you want to change it or regenerate `configure' using a newer version -of `autoconf'. - - The simplest way to compile this package is: - - 1. `cd' to the directory containing the package's source code and type - `./configure' to configure the package for your system. - - Running `configure' might take a while. While running, it prints - some messages telling which features it is checking for. - - 2. Type `make' to compile the package. - - 3. Optionally, type `make check' to run any self-tests that come with - the package, generally using the just-built uninstalled binaries. - - 4. Type `make install' to install the programs and any data files and - documentation. When installing into a prefix owned by root, it is - recommended that the package be configured and built as a regular - user, and only the `make install' phase executed with root - privileges. - - 5. Optionally, type `make installcheck' to repeat any self-tests, but - this time using the binaries in their final installed location. - This target does not install anything. Running this target as a - regular user, particularly if the prior `make install' required - root privileges, verifies that the installation completed - correctly. - - 6. You can remove the program binaries and object files from the - source code directory by typing `make clean'. To also remove the - files that `configure' created (so you can compile the package for - a different kind of computer), type `make distclean'. There is - also a `make maintainer-clean' target, but that is intended mainly - for the package's developers. If you use it, you may have to get - all sorts of other programs in order to regenerate files that came - with the distribution. - - 7. Often, you can also type `make uninstall' to remove the installed - files again. In practice, not all packages have tested that - uninstallation works correctly, even though it is required by the - GNU Coding Standards. - - 8. Some packages, particularly those that use Automake, provide `make - distcheck', which can by used by developers to test that all other - targets like `make install' and `make uninstall' work correctly. - This target is generally not run by end users. - -Compilers and Options -===================== - - Some systems require unusual options for compilation or linking that -the `configure' script does not know about. Run `./configure --help' -for details on some of the pertinent environment variables. - - You can give `configure' initial values for configuration parameters -by setting variables in the command line or in the environment. Here -is an example: - - ./configure CC=c99 CFLAGS=-g LIBS=-lposix - - *Note Defining Variables::, for more details. - -Compiling For Multiple Architectures -==================================== - - You can compile the package for more than one kind of computer at the -same time, by placing the object files for each architecture in their -own directory. To do this, you can use GNU `make'. `cd' to the -directory where you want the object files and executables to go and run -the `configure' script. `configure' automatically checks for the -source code in the directory that `configure' is in and in `..'. This -is known as a "VPATH" build. - - With a non-GNU `make', it is safer to compile the package for one -architecture at a time in the source code directory. After you have -installed the package for one architecture, use `make distclean' before -reconfiguring for another architecture. - - On MacOS X 10.5 and later systems, you can create libraries and -executables that work on multiple system types--known as "fat" or -"universal" binaries--by specifying multiple `-arch' options to the -compiler but only a single `-arch' option to the preprocessor. Like -this: - - ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ - CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ - CPP="gcc -E" CXXCPP="g++ -E" - - This is not guaranteed to produce working output in all cases, you -may have to build one architecture at a time and combine the results -using the `lipo' tool if you have problems. - -Installation Names -================== - - By default, `make install' installs the package's commands under -`/usr/local/bin', include files under `/usr/local/include', etc. You -can specify an installation prefix other than `/usr/local' by giving -`configure' the option `--prefix=PREFIX', where PREFIX must be an -absolute file name. - - You can specify separate installation prefixes for -architecture-specific files and architecture-independent files. If you -pass the option `--exec-prefix=PREFIX' to `configure', the package uses -PREFIX as the prefix for installing programs and libraries. -Documentation and other data files still use the regular prefix. - - In addition, if you use an unusual directory layout you can give -options like `--bindir=DIR' to specify different values for particular -kinds of files. Run `configure --help' for a list of the directories -you can set and what kinds of files go in them. 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On average, - this means it compresses about 3% denser (more so for some - inputs), at the same or better speeds. - - * libsnappy no longer depends on iostream. - - * Some small performance improvements in compression on x86 - (0.5–1%). - - * Various portability fixes for ARM-based platforms, for MSVC, - and for GNU/Hurd. - - -Snappy v1.0.5, February 24th 2012: - - * More speed improvements. Exactly how big will depend on - the architecture: - - - 3–10% faster decompression for the base case (x86-64). - - - ARMv7 and higher can now use unaligned accesses, - and will see about 30% faster decompression and - 20–40% faster compression. - - - 32-bit platforms (ARM and 32-bit x86) will see 2–5% - faster compression. - - These are all cumulative (e.g., ARM gets all three speedups). - - * Fixed an issue where the unit test would crash on system - with less than 256 MB address space available, - e.g. some embedded platforms. - - * Added a framing format description, for use over e.g. HTTP, - or for a command-line compressor. We do not have any - implementations of this at the current point, but there seems - to be enough of a general interest in the topic. - Also make the format description slightly clearer. - - * Remove some compile-time warnings in -Wall - (mostly signed/unsigned comparisons), for easier embedding - into projects that use -Wall -Werror. - - -Snappy v1.0.4, September 15th 2011: - - * Speeded up the decompressor somewhat; typically about 2–8% - for Core i7, in 64-bit mode (comparable for Opteron). - Somewhat more for some tests, almost no gain for others. - - * Make Snappy compile on certain platforms it didn't before - (Solaris with SunPro C++, HP-UX, AIX). - - * Correct some minor errors in the format description. - - -Snappy v1.0.3, June 2nd 2011: - - * Speeded up the decompressor somewhat; about 3-6% for Core 2, - 6-13% for Core i7, and 5-12% for Opteron (all in 64-bit mode). - - * Added compressed format documentation. This text is new, - but an earlier version from Zeev Tarantov was used as reference. - - * Only link snappy_unittest against -lz and other autodetected - libraries, not libsnappy.so (which doesn't need any such dependency). - - * Fixed some display issues in the microbenchmarks, one of which would - frequently make the test crash on GNU/Hurd. - - -Snappy v1.0.2, April 29th 2011: - - * Relicense to a BSD-type license. - - * Added C bindings, contributed by Martin Gieseking. - - * More Win32 fixes, in particular for MSVC. - - * Replace geo.protodata with a newer version. - - * Fix timing inaccuracies in the unit test when comparing Snappy - to other algorithms. - - -Snappy v1.0.1, March 25th 2011: - -This is a maintenance release, mostly containing minor fixes. -There is no new functionality. The most important fixes include: - - * The COPYING file and all licensing headers now correctly state that - Snappy is licensed under the Apache 2.0 license. - - * snappy_unittest should now compile natively under Windows, - as well as on embedded systems with no mmap(). - - * Various autotools nits have been fixed. - - -Snappy v1.0, March 17th 2011: - - * Initial version. diff --git a/snappy-1.1.0/README b/snappy-1.1.0/README deleted file mode 100644 index 3bc8888..0000000 --- a/snappy-1.1.0/README +++ /dev/null @@ -1,135 +0,0 @@ -Snappy, a fast compressor/decompressor. - - -Introduction -============ - -Snappy is a compression/decompression library. It does not aim for maximum -compression, or compatibility with any other compression library; instead, -it aims for very high speeds and reasonable compression. For instance, -compared to the fastest mode of zlib, Snappy is an order of magnitude faster -for most inputs, but the resulting compressed files are anywhere from 20% to -100% bigger. (For more information, see "Performance", below.) - -Snappy has the following properties: - - * Fast: Compression speeds at 250 MB/sec and beyond, with no assembler code. - See "Performance" below. - * Stable: Over the last few years, Snappy has compressed and decompressed - petabytes of data in Google's production environment. The Snappy bitstream - format is stable and will not change between versions. - * Robust: The Snappy decompressor is designed not to crash in the face of - corrupted or malicious input. - * Free and open source software: Snappy is licensed under a BSD-type license. - For more information, see the included COPYING file. - -Snappy has previously been called "Zippy" in some Google presentations -and the like. - - -Performance -=========== - -Snappy is intended to be fast. On a single core of a Core i7 processor -in 64-bit mode, it compresses at about 250 MB/sec or more and decompresses at -about 500 MB/sec or more. (These numbers are for the slowest inputs in our -benchmark suite; others are much faster.) In our tests, Snappy usually -is faster than algorithms in the same class (e.g. LZO, LZF, FastLZ, QuickLZ, -etc.) while achieving comparable compression ratios. - -Typical compression ratios (based on the benchmark suite) are about 1.5-1.7x -for plain text, about 2-4x for HTML, and of course 1.0x for JPEGs, PNGs and -other already-compressed data. Similar numbers for zlib in its fastest mode -are 2.6-2.8x, 3-7x and 1.0x, respectively. More sophisticated algorithms are -capable of achieving yet higher compression rates, although usually at the -expense of speed. Of course, compression ratio will vary significantly with -the input. - -Although Snappy should be fairly portable, it is primarily optimized -for 64-bit x86-compatible processors, and may run slower in other environments. -In particular: - - - Snappy uses 64-bit operations in several places to process more data at - once than would otherwise be possible. - - Snappy assumes unaligned 32- and 64-bit loads and stores are cheap. - On some platforms, these must be emulated with single-byte loads - and stores, which is much slower. - - Snappy assumes little-endian throughout, and needs to byte-swap data in - several places if running on a big-endian platform. - -Experience has shown that even heavily tuned code can be improved. -Performance optimizations, whether for 64-bit x86 or other platforms, -are of course most welcome; see "Contact", below. - - -Usage -===== - -Note that Snappy, both the implementation and the main interface, -is written in C++. However, several third-party bindings to other languages -are available; see the Google Code page at http://code.google.com/p/snappy/ -for more information. Also, if you want to use Snappy from C code, you can -use the included C bindings in snappy-c.h. - -To use Snappy from your own C++ program, include the file "snappy.h" from -your calling file, and link against the compiled library. - -There are many ways to call Snappy, but the simplest possible is - - snappy::Compress(input.data(), input.size(), &output); - -and similarly - - snappy::Uncompress(input.data(), input.size(), &output); - -where "input" and "output" are both instances of std::string. - -There are other interfaces that are more flexible in various ways, including -support for custom (non-array) input sources. See the header file for more -information. - - -Tests and benchmarks -==================== - -When you compile Snappy, snappy_unittest is compiled in addition to the -library itself. You do not need it to use the compressor from your own library, -but it contains several useful components for Snappy development. - -First of all, it contains unit tests, verifying correctness on your machine in -various scenarios. If you want to change or optimize Snappy, please run the -tests to verify you have not broken anything. Note that if you have the -Google Test library installed, unit test behavior (especially failures) will be -significantly more user-friendly. You can find Google Test at - - http://code.google.com/p/googletest/ - -You probably also want the gflags library for handling of command-line flags; -you can find it at - - http://code.google.com/p/google-gflags/ - -In addition to the unit tests, snappy contains microbenchmarks used to -tune compression and decompression performance. These are automatically run -before the unit tests, but you can disable them using the flag ---run_microbenchmarks=false if you have gflags installed (otherwise you will -need to edit the source). - -Finally, snappy can benchmark Snappy against a few other compression libraries -(zlib, LZO, LZF, FastLZ and QuickLZ), if they were detected at configure time. -To benchmark using a given file, give the compression algorithm you want to test -Snappy against (e.g. --zlib) and then a list of one or more file names on the -command line. The testdata/ directory contains the files used by the -microbenchmark, which should provide a reasonably balanced starting point for -benchmarking. (Note that baddata[1-3].snappy are not intended as benchmarks; they -are used to verify correctness in the presence of corrupted data in the unit -test.) - - -Contact -======= - -Snappy is distributed through Google Code. For the latest version, a bug tracker, -and other information, see - - http://code.google.com/p/snappy/ diff --git a/snappy-1.1.0/aclocal.m4 b/snappy-1.1.0/aclocal.m4 deleted file mode 100644 index b4c1d52..0000000 --- a/snappy-1.1.0/aclocal.m4 +++ /dev/null @@ -1,9738 +0,0 @@ -# generated automatically by aclocal 1.11.3 -*- Autoconf -*- - -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, -# 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, -# Inc. -# This file is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; without -# even the implied warranty of MERCHANTABILITY or FITNESS FOR A -# PARTICULAR PURPOSE. - -m4_ifndef([AC_AUTOCONF_VERSION], - [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl -m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.68],, -[m4_warning([this file was generated for autoconf 2.68. -You have another version of autoconf. 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then - _LT_TAGVAR(lt_prog_compiler_pic, $1)="-Xcompiler $_LT_TAGVAR(lt_prog_compiler_pic, $1)" - fi - ;; - esac - else - # PORTME Check for flag to pass linker flags through the system compiler. - case $host_os in - aix*) - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - if test "$host_cpu" = ia64; then - # AIX 5 now supports IA64 processor - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - else - _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp' - fi - ;; - - mingw* | cygwin* | pw32* | os2* | cegcc*) - # This hack is so that the source file can tell whether it is being - # built for inclusion in a dll (and should export symbols for example). - m4_if([$1], [GCJ], [], - [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) - ;; - - hpux9* | hpux10* | hpux11*) - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but - # not for PA HP-UX. - case $host_cpu in - hppa*64*|ia64*) - # +Z the default - ;; - *) - _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' - ;; 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CPU_IS_PA_RISC returns correct - results, however. */ - if (CPU_IS_PA_RISC (cpu)) - { - switch (cpu) - { - case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; - case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; - case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; - default: puts ("hppa-hitachi-hiuxwe2"); break; - } - } - else if (CPU_IS_HP_MC68K (cpu)) - puts ("m68k-hitachi-hiuxwe2"); - else puts ("unknown-hitachi-hiuxwe2"); - exit (0); - } -EOF - $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && - { echo "$SYSTEM_NAME"; exit; } - echo unknown-hitachi-hiuxwe2 - exit ;; - 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) - echo hppa1.1-hp-bsd - exit ;; - 9000/8??:4.3bsd:*:*) - echo hppa1.0-hp-bsd - exit ;; - *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) - echo hppa1.0-hp-mpeix - exit ;; - hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) - echo hppa1.1-hp-osf - exit ;; - hp8??:OSF1:*:*) - echo hppa1.0-hp-osf - exit ;; - i*86:OSF1:*:*) - if [ -x /usr/sbin/sysversion ] ; then - echo ${UNAME_MACHINE}-unknown-osf1mk - else - echo ${UNAME_MACHINE}-unknown-osf1 - fi - exit ;; - parisc*:Lites*:*:*) - echo hppa1.1-hp-lites - exit ;; - C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) - echo c1-convex-bsd - exit ;; - C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) - if getsysinfo -f scalar_acc - then echo c32-convex-bsd - else echo c2-convex-bsd - fi - exit ;; - C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) - echo c34-convex-bsd - exit ;; - C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) - echo c38-convex-bsd - exit ;; - C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) - echo c4-convex-bsd - exit ;; - CRAY*Y-MP:*:*:*) - echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*[A-Z]90:*:*:*) - echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ - | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ - -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ - -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*TS:*:*:*) - echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*T3E:*:*:*) - echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*SV1:*:*:*) - echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - *:UNICOS/mp:*:*) - echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) - FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` - FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` - FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` - echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" - exit ;; - 5000:UNIX_System_V:4.*:*) - FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` - FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'` - echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" - exit ;; - i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) - echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} - exit ;; - sparc*:BSD/OS:*:*) - echo sparc-unknown-bsdi${UNAME_RELEASE} - exit ;; - *:BSD/OS:*:*) - echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} - exit ;; - *:FreeBSD:*:*) - UNAME_PROCESSOR=`/usr/bin/uname -p` - case ${UNAME_PROCESSOR} in - amd64) - echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; - *) - echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; - esac - exit ;; - i*:CYGWIN*:*) - echo ${UNAME_MACHINE}-pc-cygwin - exit ;; - *:MINGW*:*) - echo ${UNAME_MACHINE}-pc-mingw32 - exit ;; - i*:MSYS*:*) - echo ${UNAME_MACHINE}-pc-msys - exit ;; - i*:windows32*:*) - # uname -m includes "-pc" on this system. - echo ${UNAME_MACHINE}-mingw32 - exit ;; - i*:PW*:*) - echo ${UNAME_MACHINE}-pc-pw32 - exit ;; - *:Interix*:*) - case ${UNAME_MACHINE} in - x86) - echo i586-pc-interix${UNAME_RELEASE} - exit ;; - authenticamd | genuineintel | EM64T) - echo x86_64-unknown-interix${UNAME_RELEASE} - exit ;; - IA64) - echo ia64-unknown-interix${UNAME_RELEASE} - exit ;; - esac ;; - [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) - echo i${UNAME_MACHINE}-pc-mks - exit ;; - 8664:Windows_NT:*) - echo x86_64-pc-mks - exit ;; - i*:Windows_NT*:* | Pentium*:Windows_NT*:*) - # How do we know it's Interix rather than the generic POSIX subsystem? - # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we - # UNAME_MACHINE based on the output of uname instead of i386? - echo i586-pc-interix - exit ;; - i*:UWIN*:*) - echo ${UNAME_MACHINE}-pc-uwin - exit ;; - amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) - echo x86_64-unknown-cygwin - exit ;; - p*:CYGWIN*:*) - echo powerpcle-unknown-cygwin - exit ;; - prep*:SunOS:5.*:*) - echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` - exit ;; - *:GNU:*:*) - # the GNU system - echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` - exit ;; - *:GNU/*:*:*) - # other systems with GNU libc and userland - echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu - exit ;; - i*86:Minix:*:*) - echo ${UNAME_MACHINE}-pc-minix - exit ;; - aarch64:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - aarch64_be:Linux:*:*) - UNAME_MACHINE=aarch64_be - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - alpha:Linux:*:*) - case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in - EV5) UNAME_MACHINE=alphaev5 ;; - EV56) UNAME_MACHINE=alphaev56 ;; - PCA56) UNAME_MACHINE=alphapca56 ;; - PCA57) UNAME_MACHINE=alphapca56 ;; - EV6) UNAME_MACHINE=alphaev6 ;; - EV67) UNAME_MACHINE=alphaev67 ;; - EV68*) UNAME_MACHINE=alphaev68 ;; - esac - objdump --private-headers /bin/sh | grep -q ld.so.1 - if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi - echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC} - exit ;; - arm*:Linux:*:*) - eval $set_cc_for_build - if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ - | grep -q __ARM_EABI__ - then - echo ${UNAME_MACHINE}-unknown-linux-gnu - else - if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ - | grep -q __ARM_PCS_VFP - then - echo ${UNAME_MACHINE}-unknown-linux-gnueabi - else - echo ${UNAME_MACHINE}-unknown-linux-gnueabihf - fi - fi - exit ;; - avr32*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - cris:Linux:*:*) - echo ${UNAME_MACHINE}-axis-linux-gnu - exit ;; - crisv32:Linux:*:*) - echo ${UNAME_MACHINE}-axis-linux-gnu - exit ;; - frv:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - hexagon:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - i*86:Linux:*:*) - LIBC=gnu - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #ifdef __dietlibc__ - LIBC=dietlibc - #endif -EOF - eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'` - echo "${UNAME_MACHINE}-pc-linux-${LIBC}" - exit ;; - ia64:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - m32r*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - m68*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - mips:Linux:*:* | mips64:Linux:*:*) - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #undef CPU - #undef ${UNAME_MACHINE} - #undef ${UNAME_MACHINE}el - #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) - CPU=${UNAME_MACHINE}el - #else - #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) - CPU=${UNAME_MACHINE} - #else - CPU= - #endif - #endif -EOF - eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'` - test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; } - ;; - or32:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - padre:Linux:*:*) - echo sparc-unknown-linux-gnu - exit ;; - parisc64:Linux:*:* | hppa64:Linux:*:*) - echo hppa64-unknown-linux-gnu - exit ;; - parisc:Linux:*:* | hppa:Linux:*:*) - # Look for CPU level - case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in - PA7*) echo hppa1.1-unknown-linux-gnu ;; - PA8*) echo hppa2.0-unknown-linux-gnu ;; - *) echo hppa-unknown-linux-gnu ;; - esac - exit ;; - ppc64:Linux:*:*) - echo powerpc64-unknown-linux-gnu - exit ;; - ppc:Linux:*:*) - echo powerpc-unknown-linux-gnu - exit ;; - s390:Linux:*:* | s390x:Linux:*:*) - echo ${UNAME_MACHINE}-ibm-linux - exit ;; - sh64*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - sh*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - sparc:Linux:*:* | sparc64:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - tile*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - vax:Linux:*:*) - echo ${UNAME_MACHINE}-dec-linux-gnu - exit ;; - x86_64:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - xtensa*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - i*86:DYNIX/ptx:4*:*) - # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. - # earlier versions are messed up and put the nodename in both - # sysname and nodename. - echo i386-sequent-sysv4 - exit ;; - i*86:UNIX_SV:4.2MP:2.*) - # Unixware is an offshoot of SVR4, but it has its own version - # number series starting with 2... - # I am not positive that other SVR4 systems won't match this, - # I just have to hope. -- rms. - # Use sysv4.2uw... so that sysv4* matches it. - echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} - exit ;; - i*86:OS/2:*:*) - # If we were able to find `uname', then EMX Unix compatibility - # is probably installed. - echo ${UNAME_MACHINE}-pc-os2-emx - exit ;; - i*86:XTS-300:*:STOP) - echo ${UNAME_MACHINE}-unknown-stop - exit ;; - i*86:atheos:*:*) - echo ${UNAME_MACHINE}-unknown-atheos - exit ;; - i*86:syllable:*:*) - echo ${UNAME_MACHINE}-pc-syllable - exit ;; - i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) - echo i386-unknown-lynxos${UNAME_RELEASE} - exit ;; - i*86:*DOS:*:*) - echo ${UNAME_MACHINE}-pc-msdosdjgpp - exit ;; - i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) - UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` - if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then - echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} - else - echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} - fi - exit ;; - i*86:*:5:[678]*) - # UnixWare 7.x, OpenUNIX and OpenServer 6. - case `/bin/uname -X | grep "^Machine"` in - *486*) UNAME_MACHINE=i486 ;; - *Pentium) UNAME_MACHINE=i586 ;; - *Pent*|*Celeron) UNAME_MACHINE=i686 ;; - esac - echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} - exit ;; - i*86:*:3.2:*) - if test -f /usr/options/cb.name; then - UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then - UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` - (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 - (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ - && UNAME_MACHINE=i586 - (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ - && UNAME_MACHINE=i686 - (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ - && UNAME_MACHINE=i686 - echo ${UNAME_MACHINE}-pc-sco$UNAME_REL - else - echo ${UNAME_MACHINE}-pc-sysv32 - fi - exit ;; - pc:*:*:*) - # Left here for compatibility: - # uname -m prints for DJGPP always 'pc', but it prints nothing about - # the processor, so we play safe by assuming i586. - # Note: whatever this is, it MUST be the same as what config.sub - # prints for the "djgpp" host, or else GDB configury will decide that - # this is a cross-build. - echo i586-pc-msdosdjgpp - exit ;; - Intel:Mach:3*:*) - echo i386-pc-mach3 - exit ;; - paragon:*:*:*) - echo i860-intel-osf1 - exit ;; - i860:*:4.*:*) # i860-SVR4 - if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then - echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 - else # Add other i860-SVR4 vendors below as they are discovered. - echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 - fi - exit ;; - mini*:CTIX:SYS*5:*) - # "miniframe" - echo m68010-convergent-sysv - exit ;; - mc68k:UNIX:SYSTEM5:3.51m) - echo m68k-convergent-sysv - exit ;; - M680?0:D-NIX:5.3:*) - echo m68k-diab-dnix - exit ;; - M68*:*:R3V[5678]*:*) - test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; - 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) - OS_REL='' - test -r /etc/.relid \ - && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && { echo i486-ncr-sysv4.3${OS_REL}; exit; } - /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ - && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; - 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && { echo i486-ncr-sysv4; exit; } ;; - NCR*:*:4.2:* | MPRAS*:*:4.2:*) - OS_REL='.3' - test -r /etc/.relid \ - && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && { echo i486-ncr-sysv4.3${OS_REL}; exit; } - /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ - && { echo i586-ncr-sysv4.3${OS_REL}; exit; } - /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ - && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; - m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) - echo m68k-unknown-lynxos${UNAME_RELEASE} - exit ;; - mc68030:UNIX_System_V:4.*:*) - echo m68k-atari-sysv4 - exit ;; - TSUNAMI:LynxOS:2.*:*) - echo sparc-unknown-lynxos${UNAME_RELEASE} - exit ;; - rs6000:LynxOS:2.*:*) - echo rs6000-unknown-lynxos${UNAME_RELEASE} - exit ;; - PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) - echo powerpc-unknown-lynxos${UNAME_RELEASE} - exit ;; - SM[BE]S:UNIX_SV:*:*) - echo mips-dde-sysv${UNAME_RELEASE} - exit ;; - RM*:ReliantUNIX-*:*:*) - echo mips-sni-sysv4 - exit ;; - RM*:SINIX-*:*:*) - echo mips-sni-sysv4 - exit ;; - *:SINIX-*:*:*) - if uname -p 2>/dev/null >/dev/null ; then - UNAME_MACHINE=`(uname -p) 2>/dev/null` - echo ${UNAME_MACHINE}-sni-sysv4 - else - echo ns32k-sni-sysv - fi - exit ;; - PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort - # says - echo i586-unisys-sysv4 - exit ;; - *:UNIX_System_V:4*:FTX*) - # From Gerald Hewes . - # How about differentiating between stratus architectures? -djm - echo hppa1.1-stratus-sysv4 - exit ;; - *:*:*:FTX*) - # From seanf@swdc.stratus.com. - echo i860-stratus-sysv4 - exit ;; - i*86:VOS:*:*) - # From Paul.Green@stratus.com. - echo ${UNAME_MACHINE}-stratus-vos - exit ;; - *:VOS:*:*) - # From Paul.Green@stratus.com. - echo hppa1.1-stratus-vos - exit ;; - mc68*:A/UX:*:*) - echo m68k-apple-aux${UNAME_RELEASE} - exit ;; - news*:NEWS-OS:6*:*) - echo mips-sony-newsos6 - exit ;; - R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) - if [ -d /usr/nec ]; then - echo mips-nec-sysv${UNAME_RELEASE} - else - echo mips-unknown-sysv${UNAME_RELEASE} - fi - exit ;; - BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. - echo powerpc-be-beos - exit ;; - BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. - echo powerpc-apple-beos - exit ;; - BePC:BeOS:*:*) # BeOS running on Intel PC compatible. - echo i586-pc-beos - exit ;; - BePC:Haiku:*:*) # Haiku running on Intel PC compatible. - echo i586-pc-haiku - exit ;; - SX-4:SUPER-UX:*:*) - echo sx4-nec-superux${UNAME_RELEASE} - exit ;; - SX-5:SUPER-UX:*:*) - echo sx5-nec-superux${UNAME_RELEASE} - exit ;; - SX-6:SUPER-UX:*:*) - echo sx6-nec-superux${UNAME_RELEASE} - exit ;; - SX-7:SUPER-UX:*:*) - echo sx7-nec-superux${UNAME_RELEASE} - exit ;; - SX-8:SUPER-UX:*:*) - echo sx8-nec-superux${UNAME_RELEASE} - exit ;; - SX-8R:SUPER-UX:*:*) - echo sx8r-nec-superux${UNAME_RELEASE} - exit ;; - Power*:Rhapsody:*:*) - echo powerpc-apple-rhapsody${UNAME_RELEASE} - exit ;; - *:Rhapsody:*:*) - echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} - exit ;; - *:Darwin:*:*) - UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown - case $UNAME_PROCESSOR in - i386) - eval $set_cc_for_build - if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then - if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ - (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \ - grep IS_64BIT_ARCH >/dev/null - then - UNAME_PROCESSOR="x86_64" - fi - fi ;; - unknown) UNAME_PROCESSOR=powerpc ;; - esac - echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} - exit ;; - *:procnto*:*:* | *:QNX:[0123456789]*:*) - UNAME_PROCESSOR=`uname -p` - if test "$UNAME_PROCESSOR" = "x86"; then - UNAME_PROCESSOR=i386 - UNAME_MACHINE=pc - fi - echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} - exit ;; - *:QNX:*:4*) - echo i386-pc-qnx - exit ;; - NEO-?:NONSTOP_KERNEL:*:*) - echo neo-tandem-nsk${UNAME_RELEASE} - exit ;; - NSE-?:NONSTOP_KERNEL:*:*) - echo nse-tandem-nsk${UNAME_RELEASE} - exit ;; - NSR-?:NONSTOP_KERNEL:*:*) - echo nsr-tandem-nsk${UNAME_RELEASE} - exit ;; - *:NonStop-UX:*:*) - echo mips-compaq-nonstopux - exit ;; - BS2000:POSIX*:*:*) - echo bs2000-siemens-sysv - exit ;; - DS/*:UNIX_System_V:*:*) - echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} - exit ;; - *:Plan9:*:*) - # "uname -m" is not consistent, so use $cputype instead. 386 - # is converted to i386 for consistency with other x86 - # operating systems. - if test "$cputype" = "386"; then - UNAME_MACHINE=i386 - else - UNAME_MACHINE="$cputype" - fi - echo ${UNAME_MACHINE}-unknown-plan9 - exit ;; 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- x86_64:VMkernel:*:*) - echo ${UNAME_MACHINE}-unknown-esx - exit ;; -esac - -#echo '(No uname command or uname output not recognized.)' 1>&2 -#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2 - -eval $set_cc_for_build -cat >$dummy.c < -# include -#endif -main () -{ -#if defined (sony) -#if defined (MIPSEB) - /* BFD wants "bsd" instead of "newsos". 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- amigaunix | amix) - basic_machine=m68k-unknown - os=-sysv4 - ;; - apollo68) - basic_machine=m68k-apollo - os=-sysv - ;; - apollo68bsd) - basic_machine=m68k-apollo - os=-bsd - ;; - aros) - basic_machine=i386-pc - os=-aros - ;; - aux) - basic_machine=m68k-apple - os=-aux - ;; - balance) - basic_machine=ns32k-sequent - os=-dynix - ;; - blackfin) - basic_machine=bfin-unknown - os=-linux - ;; - blackfin-*) - basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'` - os=-linux - ;; - bluegene*) - basic_machine=powerpc-ibm - os=-cnk - ;; - c54x-*) - basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - c55x-*) - basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - c6x-*) - basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - c90) - basic_machine=c90-cray - os=-unicos - ;; - cegcc) - basic_machine=arm-unknown - os=-cegcc - ;; - convex-c1) - basic_machine=c1-convex - os=-bsd - ;; - convex-c2) - basic_machine=c2-convex - os=-bsd - ;; - convex-c32) - basic_machine=c32-convex - os=-bsd - ;; 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It works by - # looking at the text of this script. This case will never be run, - # since it is checked for above. - exit 1 - ;; - -none) - exec "$@" - ;; - -*) - echo "Unknown depmode $depmode" 1>&2 - exit 1 - ;; -esac - -exit 0 - -# Local Variables: -# mode: shell-script -# sh-indentation: 2 -# eval: (add-hook 'write-file-hooks 'time-stamp) -# time-stamp-start: "scriptversion=" -# time-stamp-format: "%:y-%02m-%02d.%02H" -# time-stamp-time-zone: "UTC" -# time-stamp-end: "; # UTC" -# End: diff --git a/snappy-1.1.0/format_description.txt b/snappy-1.1.0/format_description.txt deleted file mode 100644 index 20db66c..0000000 --- a/snappy-1.1.0/format_description.txt +++ /dev/null @@ -1,110 +0,0 @@ -Snappy compressed format description -Last revised: 2011-10-05 - - -This is not a formal specification, but should suffice to explain most -relevant parts of how the Snappy format works. It is originally based on -text by Zeev Tarantov. - -Snappy is a LZ77-type compressor with a fixed, byte-oriented encoding. -There is no entropy encoder backend nor framing layer -- the latter is -assumed to be handled by other parts of the system. - -This document only describes the format, not how the Snappy compressor nor -decompressor actually works. The correctness of the decompressor should not -depend on implementation details of the compressor, and vice versa. - - -1. Preamble - -The stream starts with the uncompressed length (up to a maximum of 2^32 - 1), -stored as a little-endian varint. Varints consist of a series of bytes, -where the lower 7 bits are data and the upper bit is set iff there are -more bytes to be read. In other words, an uncompressed length of 64 would -be stored as 0x40, and an uncompressed length of 2097150 (0x1FFFFE) -would be stored as 0xFE 0xFF 0x7F. - - -2. The compressed stream itself - -There are two types of elements in a Snappy stream: Literals and -copies (backreferences). There is no restriction on the order of elements, -except that the stream naturally cannot start with a copy. (Having -two literals in a row is never optimal from a compression point of -view, but nevertheless fully permitted.) Each element starts with a tag byte, -and the lower two bits of this tag byte signal what type of element will -follow: - - 00: Literal - 01: Copy with 1-byte offset - 10: Copy with 2-byte offset - 11: Copy with 4-byte offset - -The interpretation of the upper six bits are element-dependent. - - -2.1. Literals (00) - -Literals are uncompressed data stored directly in the byte stream. -The literal length is stored differently depending on the length -of the literal: - - - For literals up to and including 60 bytes in length, the upper - six bits of the tag byte contain (len-1). The literal follows - immediately thereafter in the bytestream. - - For longer literals, the (len-1) value is stored after the tag byte, - little-endian. The upper six bits of the tag byte describe how - many bytes are used for the length; 60, 61, 62 or 63 for - 1-4 bytes, respectively. The literal itself follows after the - length. - - -2.2. Copies - -Copies are references back into previous decompressed data, telling -the decompressor to reuse data it has previously decoded. -They encode two values: The _offset_, saying how many bytes back -from the current position to read, and the _length_, how many bytes -to copy. Offsets of zero can be encoded, but are not legal; -similarly, it is possible to encode backreferences that would -go past the end of the block (offset > current decompressed position), -which is also nonsensical and thus not allowed. - -As in most LZ77-based compressors, the length can be larger than the offset, -yielding a form of run-length encoding (RLE). For instance, -"xababab" could be encoded as - - - -Note that since the current Snappy compressor works in 32 kB -blocks and does not do matching across blocks, it will never produce -a bitstream with offsets larger than about 32768. However, the -decompressor should not rely on this, as it may change in the future. - -There are several different kinds of copy elements, depending on -the amount of bytes to be copied (length), and how far back the -data to be copied is (offset). - - -2.2.1. Copy with 1-byte offset (01) - -These elements can encode lengths between [4..11] bytes and offsets -between [0..2047] bytes. (len-4) occupies three bits and is stored -in bits [2..4] of the tag byte. The offset occupies 11 bits, of which the -upper three are stored in the upper three bits ([5..7]) of the tag byte, -and the lower eight are stored in a byte following the tag byte. - - -2.2.2. Copy with 2-byte offset (10) - -These elements can encode lengths between [1..64] and offsets from -[0..65535]. (len-1) occupies six bits and is stored in the upper -six bits ([2..7]) of the tag byte. The offset is stored as a -little-endian 16-bit integer in the two bytes following the tag byte. - - -2.2.3. Copy with 4-byte offset (11) - -These are like the copies with 2-byte offsets (see previous subsection), -except that the offset is stored as a 32-bit integer instead of a -16-bit integer (and thus will occupy four bytes). diff --git a/snappy-1.1.0/framing_format.txt b/snappy-1.1.0/framing_format.txt deleted file mode 100644 index 32b1e59..0000000 --- a/snappy-1.1.0/framing_format.txt +++ /dev/null @@ -1,124 +0,0 @@ -Snappy framing format description -Last revised: 2013-01-05 - -This format decribes a framing format for Snappy, allowing compressing to -files or streams that can then more easily be decompressed without having -to hold the entire stream in memory. It also provides data checksums to -help verify integrity. It does not provide metadata checksums, so it does -not protect against e.g. all forms of truncations. - -Implementation of the framing format is optional for Snappy compressors and -decompressor; it is not part of the Snappy core specification. - - -1. General structure - -The file consists solely of chunks, lying back-to-back with no padding -in between. Each chunk consists first a single byte of chunk identifier, -then a three-byte little-endian length of the chunk in bytes (from 0 to -16777215, inclusive), and then the data if any. The four bytes of chunk -header is not counted in the data length. - -The different chunk types are listed below. The first chunk must always -be the stream identifier chunk (see section 4.1, below). The stream -ends when the file ends -- there is no explicit end-of-file marker. - - -2. File type identification - -The following identifiers for this format are recommended where appropriate. -However, note that none have been registered officially, so this is only to -be taken as a guideline. We use "Snappy framed" to distinguish between this -format and raw Snappy data. - - File extension: .sz - MIME type: application/x-snappy-framed - HTTP Content-Encoding: x-snappy-framed - - -3. Checksum format - -Some chunks have data protected by a checksum (the ones that do will say so -explicitly). The checksums are always masked CRC-32Cs. - -A description of CRC-32C can be found in RFC 3720, section 12.1, with -examples in section B.4. - -Checksums are not stored directly, but masked, as checksumming data and -then its own checksum can be problematic. The masking is the same as used -in Apache Hadoop: Rotate the checksum by 15 bits, then add the constant -0xa282ead8 (using wraparound as normal for unsigned integers). This is -equivalent to the following C code: - - uint32_t mask_checksum(uint32_t x) { - return ((x >> 15) | (x << 17)) + 0xa282ead8; - } - -Note that the masking is reversible. - -The checksum is always stored as a four bytes long integer, in little-endian. - - -4. Chunk types - -The currently supported chunk types are described below. The list may -be extended in the future. - - -4.1. Stream identifier (chunk type 0xff) - -The stream identifier is always the first element in the stream. -It is exactly six bytes long and contains "sNaPpY" in ASCII. This means that -a valid Snappy framed stream always starts with the bytes - - 0xff 0x06 0x00 0x00 0x73 0x4e 0x61 0x50 0x70 0x59 - -The stream identifier chunk can come multiple times in the stream besides -the first; if such a chunk shows up, it should simply be ignored, assuming -it has the right length and contents. This allows for easy concatenation of -compressed files without the need for re-framing. - - -4.2. Compressed data (chunk type 0x00) - -Compressed data chunks contain a normal Snappy compressed bitstream; -see the compressed format specification. The compressed data is preceded by -the CRC-32C (see section 3) of the _uncompressed_ data. - -Note that the data portion of the chunk, i.e., the compressed contents, -can be at most 16777211 bytes (2^24 - 1, minus the checksum). -However, we place an additional restriction that the uncompressed data -in a chunk must be no longer than 65536 bytes. This allows consumers to -easily use small fixed-size buffers. - - -4.3. Uncompressed data (chunk type 0x01) - -Uncompressed data chunks allow a compressor to send uncompressed, -raw data; this is useful if, for instance, uncompressible or -near-incompressible data is detected, and faster decompression is desired. - -As in the compressed chunks, the data is preceded by its own masked -CRC-32C (see section 3). - -An uncompressed data chunk, like compressed data chunks, should contain -no more than 65536 data bytes, so the maximum legal chunk length with the -checksum is 65540. - - -4.4. Reserved unskippable chunks (chunk types 0x02-0x7f) - -These are reserved for future expansion. A decoder that sees such a chunk -should immediately return an error, as it must assume it cannot decode the -stream correctly. - -Future versions of this specification may define meanings for these chunks. - - -4.5. Reserved skippable chunks (chunk types 0x80-0xfe) - -These are also reserved for future expansion, but unlike the chunks -described in 4.4, a decoder seeing these must skip them and continue -decoding. - -Future versions of this specification may define meanings for these chunks. diff --git a/snappy-1.1.0/install-sh b/snappy-1.1.0/install-sh deleted file mode 100755 index a9244eb..0000000 --- a/snappy-1.1.0/install-sh +++ /dev/null @@ -1,527 +0,0 @@ -#!/bin/sh -# install - install a program, script, or datafile - -scriptversion=2011-01-19.21; # UTC - -# This originates from X11R5 (mit/util/scripts/install.sh), which was -# later released in X11R6 (xc/config/util/install.sh) with the -# following copyright and license. -# -# Copyright (C) 1994 X Consortium -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to -# deal in the Software without restriction, including without limitation the -# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or -# sell copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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It backslashifies -# metacharacters that are still active within double-quoted strings. -Xsed="${SED}"' -e 1s/^X//' -sed_quote_subst='s/\([`"$\\]\)/\\\1/g' - -# Same as above, but do not quote variable references. -double_quote_subst='s/\(["`\\]\)/\\\1/g' - -# Sed substitution that turns a string into a regex matching for the -# string literally. -sed_make_literal_regex='s,[].[^$\\*\/],\\&,g' - -# Sed substitution that converts a w32 file name or path -# which contains forward slashes, into one that contains -# (escaped) backslashes. A very naive implementation. -lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g' - -# Re-`\' parameter expansions in output of double_quote_subst that were -# `\'-ed in input to the same. If an odd number of `\' preceded a '$' -# in input to double_quote_subst, that '$' was protected from expansion. -# Since each input `\' is now two `\'s, look for any number of runs of -# four `\'s followed by two `\'s and then a '$'. `\' that '$'. -bs='\\' -bs2='\\\\' -bs4='\\\\\\\\' -dollar='\$' -sed_double_backslash="\ - s/$bs4/&\\ -/g - s/^$bs2$dollar/$bs&/ - s/\\([^$bs]\\)$bs2$dollar/\\1$bs2$bs$dollar/g - s/\n//g" - -# Standard options: -opt_dry_run=false -opt_help=false -opt_quiet=false -opt_verbose=false -opt_warning=: - -# func_echo arg... -# Echo program name prefixed message, along with the current mode -# name if it has been set yet. -func_echo () -{ - $ECHO "$progname: ${opt_mode+$opt_mode: }$*" -} - -# func_verbose arg... -# Echo program name prefixed message in verbose mode only. -func_verbose () -{ - $opt_verbose && func_echo ${1+"$@"} - - # A bug in bash halts the script if the last line of a function - # fails when set -e is in force, so we need another command to - # work around that: - : -} - -# func_echo_all arg... -# Invoke $ECHO with all args, space-separated. -func_echo_all () -{ - $ECHO "$*" -} - -# func_error arg... -# Echo program name prefixed message to standard error. -func_error () -{ - $ECHO "$progname: ${opt_mode+$opt_mode: }"${1+"$@"} 1>&2 -} - -# func_warning arg... -# Echo program name prefixed warning message to standard error. -func_warning () -{ - $opt_warning && $ECHO "$progname: ${opt_mode+$opt_mode: }warning: "${1+"$@"} 1>&2 - - # bash bug again: - : -} - -# func_fatal_error arg... -# Echo program name prefixed message to standard error, and exit. -func_fatal_error () -{ - func_error ${1+"$@"} - exit $EXIT_FAILURE -} - -# func_fatal_help arg... -# Echo program name prefixed message to standard error, followed by -# a help hint, and exit. -func_fatal_help () -{ - func_error ${1+"$@"} - func_fatal_error "$help" -} -help="Try \`$progname --help' for more information." ## default - - -# func_grep expression filename -# Check whether EXPRESSION matches any line of FILENAME, without output. -func_grep () -{ - $GREP "$1" "$2" >/dev/null 2>&1 -} - - -# func_mkdir_p directory-path -# Make sure the entire path to DIRECTORY-PATH is available. -func_mkdir_p () -{ - my_directory_path="$1" - my_dir_list= - - if test -n "$my_directory_path" && test "$opt_dry_run" != ":"; then - - # Protect directory names starting with `-' - case $my_directory_path in - -*) my_directory_path="./$my_directory_path" ;; - esac - - # While some portion of DIR does not yet exist... - while test ! -d "$my_directory_path"; do - # ...make a list in topmost first order. Use a colon delimited - # list incase some portion of path contains whitespace. - my_dir_list="$my_directory_path:$my_dir_list" - - # If the last portion added has no slash in it, the list is done - case $my_directory_path in */*) ;; *) break ;; esac - - # ...otherwise throw away the child directory and loop - my_directory_path=`$ECHO "$my_directory_path" | $SED -e "$dirname"` - done - my_dir_list=`$ECHO "$my_dir_list" | $SED 's,:*$,,'` - - save_mkdir_p_IFS="$IFS"; IFS=':' - for my_dir in $my_dir_list; do - IFS="$save_mkdir_p_IFS" - # mkdir can fail with a `File exist' error if two processes - # try to create one of the directories concurrently. Don't - # stop in that case! - $MKDIR "$my_dir" 2>/dev/null || : - done - IFS="$save_mkdir_p_IFS" - - # Bail out if we (or some other process) failed to create a directory. - test -d "$my_directory_path" || \ - func_fatal_error "Failed to create \`$1'" - fi -} - - -# func_mktempdir [string] -# Make a temporary directory that won't clash with other running -# libtool processes, and avoids race conditions if possible. If -# given, STRING is the basename for that directory. -func_mktempdir () -{ - my_template="${TMPDIR-/tmp}/${1-$progname}" - - if test "$opt_dry_run" = ":"; then - # Return a directory name, but don't create it in dry-run mode - my_tmpdir="${my_template}-$$" - else - - # If mktemp works, use that first and foremost - my_tmpdir=`mktemp -d "${my_template}-XXXXXXXX" 2>/dev/null` - - if test ! -d "$my_tmpdir"; then - # Failing that, at least try and use $RANDOM to avoid a race - my_tmpdir="${my_template}-${RANDOM-0}$$" - - save_mktempdir_umask=`umask` - umask 0077 - $MKDIR "$my_tmpdir" - umask $save_mktempdir_umask - fi - - # If we're not in dry-run mode, bomb out on failure - test -d "$my_tmpdir" || \ - func_fatal_error "cannot create temporary directory \`$my_tmpdir'" - fi - - $ECHO "$my_tmpdir" -} - - -# func_quote_for_eval arg -# Aesthetically quote ARG to be evaled later. -# This function returns two values: FUNC_QUOTE_FOR_EVAL_RESULT -# is double-quoted, suitable for a subsequent eval, whereas -# FUNC_QUOTE_FOR_EVAL_UNQUOTED_RESULT has merely all characters -# which are still active within double quotes backslashified. -func_quote_for_eval () -{ - case $1 in - *[\\\`\"\$]*) - func_quote_for_eval_unquoted_result=`$ECHO "$1" | $SED "$sed_quote_subst"` ;; - *) - func_quote_for_eval_unquoted_result="$1" ;; - esac - - case $func_quote_for_eval_unquoted_result in - # Double-quote args containing shell metacharacters to delay - # word splitting, command substitution and and variable - # expansion for a subsequent eval. - # Many Bourne shells cannot handle close brackets correctly - # in scan sets, so we specify it separately. - *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"") - func_quote_for_eval_result="\"$func_quote_for_eval_unquoted_result\"" - ;; - *) - func_quote_for_eval_result="$func_quote_for_eval_unquoted_result" - esac -} - - -# func_quote_for_expand arg -# Aesthetically quote ARG to be evaled later; same as above, -# but do not quote variable references. -func_quote_for_expand () -{ - case $1 in - *[\\\`\"]*) - my_arg=`$ECHO "$1" | $SED \ - -e "$double_quote_subst" -e "$sed_double_backslash"` ;; - *) - my_arg="$1" ;; - esac - - case $my_arg in - # Double-quote args containing shell metacharacters to delay - # word splitting and command substitution for a subsequent eval. - # Many Bourne shells cannot handle close brackets correctly - # in scan sets, so we specify it separately. - *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"") - my_arg="\"$my_arg\"" - ;; - esac - - func_quote_for_expand_result="$my_arg" -} - - -# func_show_eval cmd [fail_exp] -# Unless opt_silent is true, then output CMD. Then, if opt_dryrun is -# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP -# is given, then evaluate it. -func_show_eval () -{ - my_cmd="$1" - my_fail_exp="${2-:}" - - ${opt_silent-false} || { - func_quote_for_expand "$my_cmd" - eval "func_echo $func_quote_for_expand_result" - } - - if ${opt_dry_run-false}; then :; else - eval "$my_cmd" - my_status=$? - if test "$my_status" -eq 0; then :; else - eval "(exit $my_status); $my_fail_exp" - fi - fi -} - - -# func_show_eval_locale cmd [fail_exp] -# Unless opt_silent is true, then output CMD. Then, if opt_dryrun is -# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP -# is given, then evaluate it. Use the saved locale for evaluation. -func_show_eval_locale () -{ - my_cmd="$1" - my_fail_exp="${2-:}" - - ${opt_silent-false} || { - func_quote_for_expand "$my_cmd" - eval "func_echo $func_quote_for_expand_result" - } - - if ${opt_dry_run-false}; then :; else - eval "$lt_user_locale - $my_cmd" - my_status=$? - eval "$lt_safe_locale" - if test "$my_status" -eq 0; then :; else - eval "(exit $my_status); $my_fail_exp" - fi - fi -} - -# func_tr_sh -# Turn $1 into a string suitable for a shell variable name. -# Result is stored in $func_tr_sh_result. All characters -# not in the set a-zA-Z0-9_ are replaced with '_'. Further, -# if $1 begins with a digit, a '_' is prepended as well. -func_tr_sh () -{ - case $1 in - [0-9]* | *[!a-zA-Z0-9_]*) - func_tr_sh_result=`$ECHO "$1" | $SED 's/^\([0-9]\)/_\1/; s/[^a-zA-Z0-9_]/_/g'` - ;; - * ) - func_tr_sh_result=$1 - ;; - esac -} - - -# func_version -# Echo version message to standard output and exit. -func_version () -{ - $opt_debug - - $SED -n '/(C)/!b go - :more - /\./!{ - N - s/\n# / / - b more - } - :go - /^# '$PROGRAM' (GNU /,/# warranty; / { - s/^# // - s/^# *$// - s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/ - p - }' < "$progpath" - exit $? -} - -# func_usage -# Echo short help message to standard output and exit. -func_usage () -{ - $opt_debug - - $SED -n '/^# Usage:/,/^# *.*--help/ { - s/^# // - s/^# *$// - s/\$progname/'$progname'/ - p - }' < "$progpath" - echo - $ECHO "run \`$progname --help | more' for full usage" - exit $? -} - -# func_help [NOEXIT] -# Echo long help message to standard output and exit, -# unless 'noexit' is passed as argument. -func_help () -{ - $opt_debug - - $SED -n '/^# Usage:/,/# Report bugs to/ { - :print - s/^# // - s/^# *$// - s*\$progname*'$progname'* - s*\$host*'"$host"'* - s*\$SHELL*'"$SHELL"'* - s*\$LTCC*'"$LTCC"'* - s*\$LTCFLAGS*'"$LTCFLAGS"'* - s*\$LD*'"$LD"'* - s/\$with_gnu_ld/'"$with_gnu_ld"'/ - s/\$automake_version/'"`(${AUTOMAKE-automake} --version) 2>/dev/null |$SED 1q`"'/ - s/\$autoconf_version/'"`(${AUTOCONF-autoconf} --version) 2>/dev/null |$SED 1q`"'/ - p - d - } - /^# .* home page:/b print - /^# General help using/b print - ' < "$progpath" - ret=$? - if test -z "$1"; then - exit $ret - fi -} - -# func_missing_arg argname -# Echo program name prefixed message to standard error and set global -# exit_cmd. -func_missing_arg () -{ - $opt_debug - - func_error "missing argument for $1." - exit_cmd=exit -} - - -# func_split_short_opt shortopt -# Set func_split_short_opt_name and func_split_short_opt_arg shell -# variables after splitting SHORTOPT after the 2nd character. -func_split_short_opt () -{ - my_sed_short_opt='1s/^\(..\).*$/\1/;q' - my_sed_short_rest='1s/^..\(.*\)$/\1/;q' - - func_split_short_opt_name=`$ECHO "$1" | $SED "$my_sed_short_opt"` - func_split_short_opt_arg=`$ECHO "$1" | $SED "$my_sed_short_rest"` -} # func_split_short_opt may be replaced by extended shell implementation - - -# func_split_long_opt longopt -# Set func_split_long_opt_name and func_split_long_opt_arg shell -# variables after splitting LONGOPT at the `=' sign. -func_split_long_opt () -{ - my_sed_long_opt='1s/^\(--[^=]*\)=.*/\1/;q' - my_sed_long_arg='1s/^--[^=]*=//' - - func_split_long_opt_name=`$ECHO "$1" | $SED "$my_sed_long_opt"` - func_split_long_opt_arg=`$ECHO "$1" | $SED "$my_sed_long_arg"` -} # func_split_long_opt may be replaced by extended shell implementation - -exit_cmd=: - - - - - -magic="%%%MAGIC variable%%%" -magic_exe="%%%MAGIC EXE variable%%%" - -# Global variables. -nonopt= -preserve_args= -lo2o="s/\\.lo\$/.${objext}/" -o2lo="s/\\.${objext}\$/.lo/" -extracted_archives= -extracted_serial=0 - -# If this variable is set in any of the actions, the command in it -# will be execed at the end. This prevents here-documents from being -# left over by shells. -exec_cmd= - -# func_append var value -# Append VALUE to the end of shell variable VAR. -func_append () -{ - eval "${1}=\$${1}\${2}" -} # func_append may be replaced by extended shell implementation - -# func_append_quoted var value -# Quote VALUE and append to the end of shell variable VAR, separated -# by a space. -func_append_quoted () -{ - func_quote_for_eval "${2}" - eval "${1}=\$${1}\\ \$func_quote_for_eval_result" -} # func_append_quoted may be replaced by extended shell implementation - - -# func_arith arithmetic-term... -func_arith () -{ - func_arith_result=`expr "${@}"` -} # func_arith may be replaced by extended shell implementation - - -# func_len string -# STRING may not start with a hyphen. -func_len () -{ - func_len_result=`expr "${1}" : ".*" 2>/dev/null || echo $max_cmd_len` -} # func_len may be replaced by extended shell implementation - - -# func_lo2o object -func_lo2o () -{ - func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"` -} # func_lo2o may be replaced by extended shell implementation - - -# func_xform libobj-or-source -func_xform () -{ - func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'` -} # func_xform may be replaced by extended shell implementation - - -# func_fatal_configuration arg... -# Echo program name prefixed message to standard error, followed by -# a configuration failure hint, and exit. -func_fatal_configuration () -{ - func_error ${1+"$@"} - func_error "See the $PACKAGE documentation for more information." - func_fatal_error "Fatal configuration error." -} - - -# func_config -# Display the configuration for all the tags in this script. -func_config () -{ - re_begincf='^# ### BEGIN LIBTOOL' - re_endcf='^# ### END LIBTOOL' - - # Default configuration. - $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath" - - # Now print the configurations for the tags. - for tagname in $taglist; do - $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath" - done - - exit $? -} - -# func_features -# Display the features supported by this script. -func_features () -{ - echo "host: $host" - if test "$build_libtool_libs" = yes; then - echo "enable shared libraries" - else - echo "disable shared libraries" - fi - if test "$build_old_libs" = yes; then - echo "enable static libraries" - else - echo "disable static libraries" - fi - - exit $? -} - -# func_enable_tag tagname -# Verify that TAGNAME is valid, and either flag an error and exit, or -# enable the TAGNAME tag. We also add TAGNAME to the global $taglist -# variable here. -func_enable_tag () -{ - # Global variable: - tagname="$1" - - re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$" - re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$" - sed_extractcf="/$re_begincf/,/$re_endcf/p" - - # Validate tagname. - case $tagname in - *[!-_A-Za-z0-9,/]*) - func_fatal_error "invalid tag name: $tagname" - ;; - esac - - # Don't test for the "default" C tag, as we know it's - # there but not specially marked. - case $tagname in - CC) ;; - *) - if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then - taglist="$taglist $tagname" - - # Evaluate the configuration. Be careful to quote the path - # and the sed script, to avoid splitting on whitespace, but - # also don't use non-portable quotes within backquotes within - # quotes we have to do it in 2 steps: - extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"` - eval "$extractedcf" - else - func_error "ignoring unknown tag $tagname" - fi - ;; - esac -} - -# func_check_version_match -# Ensure that we are using m4 macros, and libtool script from the same -# release of libtool. -func_check_version_match () -{ - if test "$package_revision" != "$macro_revision"; then - if test "$VERSION" != "$macro_version"; then - if test -z "$macro_version"; then - cat >&2 <<_LT_EOF -$progname: Version mismatch error. This is $PACKAGE $VERSION, but the -$progname: definition of this LT_INIT comes from an older release. -$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION -$progname: and run autoconf again. -_LT_EOF - else - cat >&2 <<_LT_EOF -$progname: Version mismatch error. This is $PACKAGE $VERSION, but the -$progname: definition of this LT_INIT comes from $PACKAGE $macro_version. -$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION -$progname: and run autoconf again. -_LT_EOF - fi - else - cat >&2 <<_LT_EOF -$progname: Version mismatch error. This is $PACKAGE $VERSION, revision $package_revision, -$progname: but the definition of this LT_INIT comes from revision $macro_revision. -$progname: You should recreate aclocal.m4 with macros from revision $package_revision -$progname: of $PACKAGE $VERSION and run autoconf again. -_LT_EOF - fi - - exit $EXIT_MISMATCH - fi -} - - -# Shorthand for --mode=foo, only valid as the first argument -case $1 in -clean|clea|cle|cl) - shift; set dummy --mode clean ${1+"$@"}; shift - ;; -compile|compil|compi|comp|com|co|c) - shift; set dummy --mode compile ${1+"$@"}; shift - ;; -execute|execut|execu|exec|exe|ex|e) - shift; set dummy --mode execute ${1+"$@"}; shift - ;; -finish|finis|fini|fin|fi|f) - shift; set dummy --mode finish ${1+"$@"}; shift - ;; -install|instal|insta|inst|ins|in|i) - shift; set dummy --mode install ${1+"$@"}; shift - ;; -link|lin|li|l) - shift; set dummy --mode link ${1+"$@"}; shift - ;; -uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u) - shift; set dummy --mode uninstall ${1+"$@"}; shift - ;; -esac - - - -# Option defaults: -opt_debug=: -opt_dry_run=false -opt_config=false -opt_preserve_dup_deps=false -opt_features=false -opt_finish=false -opt_help=false -opt_help_all=false -opt_silent=: -opt_warning=: -opt_verbose=: -opt_silent=false -opt_verbose=false - - -# Parse options once, thoroughly. This comes as soon as possible in the -# script to make things like `--version' happen as quickly as we can. -{ - # this just eases exit handling - while test $# -gt 0; do - opt="$1" - shift - case $opt in - --debug|-x) opt_debug='set -x' - func_echo "enabling shell trace mode" - $opt_debug - ;; - --dry-run|--dryrun|-n) - opt_dry_run=: - ;; - --config) - opt_config=: -func_config - ;; - --dlopen|-dlopen) - optarg="$1" - opt_dlopen="${opt_dlopen+$opt_dlopen -}$optarg" - shift - ;; - --preserve-dup-deps) - opt_preserve_dup_deps=: - ;; - --features) - opt_features=: -func_features - ;; - --finish) - opt_finish=: -set dummy --mode finish ${1+"$@"}; shift - ;; - --help) - opt_help=: - ;; - --help-all) - opt_help_all=: -opt_help=': help-all' - ;; - --mode) - test $# = 0 && func_missing_arg $opt && break - optarg="$1" - opt_mode="$optarg" -case $optarg in - # Valid mode arguments: - clean|compile|execute|finish|install|link|relink|uninstall) ;; - - # Catch anything else as an error - *) func_error "invalid argument for $opt" - exit_cmd=exit - break - ;; -esac - shift - ;; - --no-silent|--no-quiet) - opt_silent=false -func_append preserve_args " $opt" - ;; - --no-warning|--no-warn) - opt_warning=false -func_append preserve_args " $opt" - ;; - --no-verbose) - opt_verbose=false -func_append preserve_args " $opt" - ;; - --silent|--quiet) - opt_silent=: -func_append preserve_args " $opt" - opt_verbose=false - ;; - --verbose|-v) - opt_verbose=: -func_append preserve_args " $opt" -opt_silent=false - ;; - --tag) - test $# = 0 && func_missing_arg $opt && break - optarg="$1" - opt_tag="$optarg" -func_append preserve_args " $opt $optarg" -func_enable_tag "$optarg" - shift - ;; - - -\?|-h) func_usage ;; - --help) func_help ;; - --version) func_version ;; - - # Separate optargs to long options: - --*=*) - func_split_long_opt "$opt" - set dummy "$func_split_long_opt_name" "$func_split_long_opt_arg" ${1+"$@"} - shift - ;; - - # Separate non-argument short options: - -\?*|-h*|-n*|-v*) - func_split_short_opt "$opt" - set dummy "$func_split_short_opt_name" "-$func_split_short_opt_arg" ${1+"$@"} - shift - ;; - - --) break ;; - -*) func_fatal_help "unrecognized option \`$opt'" ;; - *) set dummy "$opt" ${1+"$@"}; shift; break ;; - esac - done - - # Validate options: - - # save first non-option argument - if test "$#" -gt 0; then - nonopt="$opt" - shift - fi - - # preserve --debug - test "$opt_debug" = : || func_append preserve_args " --debug" - - case $host in - *cygwin* | *mingw* | *pw32* | *cegcc*) - # don't eliminate duplications in $postdeps and $predeps - opt_duplicate_compiler_generated_deps=: - ;; - *) - opt_duplicate_compiler_generated_deps=$opt_preserve_dup_deps - ;; - esac - - $opt_help || { - # Sanity checks first: - func_check_version_match - - if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then - func_fatal_configuration "not configured to build any kind of library" - fi - - # Darwin sucks - eval std_shrext=\"$shrext_cmds\" - - # Only execute mode is allowed to have -dlopen flags. - if test -n "$opt_dlopen" && test "$opt_mode" != execute; then - func_error "unrecognized option \`-dlopen'" - $ECHO "$help" 1>&2 - exit $EXIT_FAILURE - fi - - # Change the help message to a mode-specific one. - generic_help="$help" - help="Try \`$progname --help --mode=$opt_mode' for more information." - } - - - # Bail if the options were screwed - $exit_cmd $EXIT_FAILURE -} - - - - -## ----------- ## -## Main. ## -## ----------- ## - -# func_lalib_p file -# True iff FILE is a libtool `.la' library or `.lo' object file. -# This function is only a basic sanity check; it will hardly flush out -# determined imposters. -func_lalib_p () -{ - test -f "$1" && - $SED -e 4q "$1" 2>/dev/null \ - | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1 -} - -# func_lalib_unsafe_p file -# True iff FILE is a libtool `.la' library or `.lo' object file. -# This function implements the same check as func_lalib_p without -# resorting to external programs. To this end, it redirects stdin and -# closes it afterwards, without saving the original file descriptor. -# As a safety measure, use it only where a negative result would be -# fatal anyway. Works if `file' does not exist. -func_lalib_unsafe_p () -{ - lalib_p=no - if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then - for lalib_p_l in 1 2 3 4 - do - read lalib_p_line - case "$lalib_p_line" in - \#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;; - esac - done - exec 0<&5 5<&- - fi - test "$lalib_p" = yes -} - -# func_ltwrapper_script_p file -# True iff FILE is a libtool wrapper script -# This function is only a basic sanity check; it will hardly flush out -# determined imposters. -func_ltwrapper_script_p () -{ - func_lalib_p "$1" -} - -# func_ltwrapper_executable_p file -# True iff FILE is a libtool wrapper executable -# This function is only a basic sanity check; it will hardly flush out -# determined imposters. -func_ltwrapper_executable_p () -{ - func_ltwrapper_exec_suffix= - case $1 in - *.exe) ;; - *) func_ltwrapper_exec_suffix=.exe ;; - esac - $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1 -} - -# func_ltwrapper_scriptname file -# Assumes file is an ltwrapper_executable -# uses $file to determine the appropriate filename for a -# temporary ltwrapper_script. -func_ltwrapper_scriptname () -{ - func_dirname_and_basename "$1" "" "." - func_stripname '' '.exe' "$func_basename_result" - func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper" -} - -# func_ltwrapper_p file -# True iff FILE is a libtool wrapper script or wrapper executable -# This function is only a basic sanity check; it will hardly flush out -# determined imposters. -func_ltwrapper_p () -{ - func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1" -} - - -# func_execute_cmds commands fail_cmd -# Execute tilde-delimited COMMANDS. -# If FAIL_CMD is given, eval that upon failure. -# FAIL_CMD may read-access the current command in variable CMD! -func_execute_cmds () -{ - $opt_debug - save_ifs=$IFS; IFS='~' - for cmd in $1; do - IFS=$save_ifs - eval cmd=\"$cmd\" - func_show_eval "$cmd" "${2-:}" - done - IFS=$save_ifs -} - - -# func_source file -# Source FILE, adding directory component if necessary. -# Note that it is not necessary on cygwin/mingw to append a dot to -# FILE even if both FILE and FILE.exe exist: automatic-append-.exe -# behavior happens only for exec(3), not for open(2)! Also, sourcing -# `FILE.' does not work on cygwin managed mounts. -func_source () -{ - $opt_debug - case $1 in - */* | *\\*) . "$1" ;; - *) . "./$1" ;; - esac -} - - -# func_resolve_sysroot PATH -# Replace a leading = in PATH with a sysroot. Store the result into -# func_resolve_sysroot_result -func_resolve_sysroot () -{ - func_resolve_sysroot_result=$1 - case $func_resolve_sysroot_result in - =*) - func_stripname '=' '' "$func_resolve_sysroot_result" - func_resolve_sysroot_result=$lt_sysroot$func_stripname_result - ;; - esac -} - -# func_replace_sysroot PATH -# If PATH begins with the sysroot, replace it with = and -# store the result into func_replace_sysroot_result. -func_replace_sysroot () -{ - case "$lt_sysroot:$1" in - ?*:"$lt_sysroot"*) - func_stripname "$lt_sysroot" '' "$1" - func_replace_sysroot_result="=$func_stripname_result" - ;; - *) - # Including no sysroot. - func_replace_sysroot_result=$1 - ;; - esac -} - -# func_infer_tag arg -# Infer tagged configuration to use if any are available and -# if one wasn't chosen via the "--tag" command line option. -# Only attempt this if the compiler in the base compile -# command doesn't match the default compiler. -# arg is usually of the form 'gcc ...' -func_infer_tag () -{ - $opt_debug - if test -n "$available_tags" && test -z "$tagname"; then - CC_quoted= - for arg in $CC; do - func_append_quoted CC_quoted "$arg" - done - CC_expanded=`func_echo_all $CC` - CC_quoted_expanded=`func_echo_all $CC_quoted` - case $@ in - # Blanks in the command may have been stripped by the calling shell, - # but not from the CC environment variable when configure was run. - " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \ - " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) ;; - # Blanks at the start of $base_compile will cause this to fail - # if we don't check for them as well. - *) - for z in $available_tags; do - if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then - # Evaluate the configuration. - eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`" - CC_quoted= - for arg in $CC; do - # Double-quote args containing other shell metacharacters. - func_append_quoted CC_quoted "$arg" - done - CC_expanded=`func_echo_all $CC` - CC_quoted_expanded=`func_echo_all $CC_quoted` - case "$@ " in - " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \ - " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) - # The compiler in the base compile command matches - # the one in the tagged configuration. - # Assume this is the tagged configuration we want. - tagname=$z - break - ;; - esac - fi - done - # If $tagname still isn't set, then no tagged configuration - # was found and let the user know that the "--tag" command - # line option must be used. - if test -z "$tagname"; then - func_echo "unable to infer tagged configuration" - func_fatal_error "specify a tag with \`--tag'" -# else -# func_verbose "using $tagname tagged configuration" - fi - ;; - esac - fi -} - - - -# func_write_libtool_object output_name pic_name nonpic_name -# Create a libtool object file (analogous to a ".la" file), -# but don't create it if we're doing a dry run. -func_write_libtool_object () -{ - write_libobj=${1} - if test "$build_libtool_libs" = yes; then - write_lobj=\'${2}\' - else - write_lobj=none - fi - - if test "$build_old_libs" = yes; then - write_oldobj=\'${3}\' - else - write_oldobj=none - fi - - $opt_dry_run || { - cat >${write_libobj}T </dev/null` - if test "$?" -eq 0 && test -n "${func_convert_core_file_wine_to_w32_tmp}"; then - func_convert_core_file_wine_to_w32_result=`$ECHO "$func_convert_core_file_wine_to_w32_tmp" | - $SED -e "$lt_sed_naive_backslashify"` - else - func_convert_core_file_wine_to_w32_result= - fi - fi -} -# end: func_convert_core_file_wine_to_w32 - - -# func_convert_core_path_wine_to_w32 ARG -# Helper function used by path conversion functions when $build is *nix, and -# $host is mingw, cygwin, or some other w32 environment. Relies on a correctly -# configured wine environment available, with the winepath program in $build's -# $PATH. Assumes ARG has no leading or trailing path separator characters. -# -# ARG is path to be converted from $build format to win32. -# Result is available in $func_convert_core_path_wine_to_w32_result. -# Unconvertible file (directory) names in ARG are skipped; if no directory names -# are convertible, then the result may be empty. -func_convert_core_path_wine_to_w32 () -{ - $opt_debug - # unfortunately, winepath doesn't convert paths, only file names - func_convert_core_path_wine_to_w32_result="" - if test -n "$1"; then - oldIFS=$IFS - IFS=: - for func_convert_core_path_wine_to_w32_f in $1; do - IFS=$oldIFS - func_convert_core_file_wine_to_w32 "$func_convert_core_path_wine_to_w32_f" - if test -n "$func_convert_core_file_wine_to_w32_result" ; then - if test -z "$func_convert_core_path_wine_to_w32_result"; then - func_convert_core_path_wine_to_w32_result="$func_convert_core_file_wine_to_w32_result" - else - func_append func_convert_core_path_wine_to_w32_result ";$func_convert_core_file_wine_to_w32_result" - fi - fi - done - IFS=$oldIFS - fi -} -# end: func_convert_core_path_wine_to_w32 - - -# func_cygpath ARGS... -# Wrapper around calling the cygpath program via LT_CYGPATH. This is used when -# when (1) $build is *nix and Cygwin is hosted via a wine environment; or (2) -# $build is MSYS and $host is Cygwin, or (3) $build is Cygwin. In case (1) or -# (2), returns the Cygwin file name or path in func_cygpath_result (input -# file name or path is assumed to be in w32 format, as previously converted -# from $build's *nix or MSYS format). In case (3), returns the w32 file name -# or path in func_cygpath_result (input file name or path is assumed to be in -# Cygwin format). Returns an empty string on error. -# -# ARGS are passed to cygpath, with the last one being the file name or path to -# be converted. -# -# Specify the absolute *nix (or w32) name to cygpath in the LT_CYGPATH -# environment variable; do not put it in $PATH. -func_cygpath () -{ - $opt_debug - if test -n "$LT_CYGPATH" && test -f "$LT_CYGPATH"; then - func_cygpath_result=`$LT_CYGPATH "$@" 2>/dev/null` - if test "$?" -ne 0; then - # on failure, ensure result is empty - func_cygpath_result= - fi - else - func_cygpath_result= - func_error "LT_CYGPATH is empty or specifies non-existent file: \`$LT_CYGPATH'" - fi -} -#end: func_cygpath - - -# func_convert_core_msys_to_w32 ARG -# Convert file name or path ARG from MSYS format to w32 format. Return -# result in func_convert_core_msys_to_w32_result. -func_convert_core_msys_to_w32 () -{ - $opt_debug - # awkward: cmd appends spaces to result - func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null | - $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"` -} -#end: func_convert_core_msys_to_w32 - - -# func_convert_file_check ARG1 ARG2 -# Verify that ARG1 (a file name in $build format) was converted to $host -# format in ARG2. Otherwise, emit an error message, but continue (resetting -# func_to_host_file_result to ARG1). -func_convert_file_check () -{ - $opt_debug - if test -z "$2" && test -n "$1" ; then - func_error "Could not determine host file name corresponding to" - func_error " \`$1'" - func_error "Continuing, but uninstalled executables may not work." - # Fallback: - func_to_host_file_result="$1" - fi -} -# end func_convert_file_check - - -# func_convert_path_check FROM_PATHSEP TO_PATHSEP FROM_PATH TO_PATH -# Verify that FROM_PATH (a path in $build format) was converted to $host -# format in TO_PATH. Otherwise, emit an error message, but continue, resetting -# func_to_host_file_result to a simplistic fallback value (see below). -func_convert_path_check () -{ - $opt_debug - if test -z "$4" && test -n "$3"; then - func_error "Could not determine the host path corresponding to" - func_error " \`$3'" - func_error "Continuing, but uninstalled executables may not work." - # Fallback. This is a deliberately simplistic "conversion" and - # should not be "improved". See libtool.info. - if test "x$1" != "x$2"; then - lt_replace_pathsep_chars="s|$1|$2|g" - func_to_host_path_result=`echo "$3" | - $SED -e "$lt_replace_pathsep_chars"` - else - func_to_host_path_result="$3" - fi - fi -} -# end func_convert_path_check - - -# func_convert_path_front_back_pathsep FRONTPAT BACKPAT REPL ORIG -# Modifies func_to_host_path_result by prepending REPL if ORIG matches FRONTPAT -# and appending REPL if ORIG matches BACKPAT. -func_convert_path_front_back_pathsep () -{ - $opt_debug - case $4 in - $1 ) func_to_host_path_result="$3$func_to_host_path_result" - ;; - esac - case $4 in - $2 ) func_append func_to_host_path_result "$3" - ;; - esac -} -# end func_convert_path_front_back_pathsep - - -################################################## -# $build to $host FILE NAME CONVERSION FUNCTIONS # -################################################## -# invoked via `$to_host_file_cmd ARG' -# -# In each case, ARG is the path to be converted from $build to $host format. -# Result will be available in $func_to_host_file_result. - - -# func_to_host_file ARG -# Converts the file name ARG from $build format to $host format. Return result -# in func_to_host_file_result. -func_to_host_file () -{ - $opt_debug - $to_host_file_cmd "$1" -} -# end func_to_host_file - - -# func_to_tool_file ARG LAZY -# converts the file name ARG from $build format to toolchain format. Return -# result in func_to_tool_file_result. If the conversion in use is listed -# in (the comma separated) LAZY, no conversion takes place. -func_to_tool_file () -{ - $opt_debug - case ,$2, in - *,"$to_tool_file_cmd",*) - func_to_tool_file_result=$1 - ;; - *) - $to_tool_file_cmd "$1" - func_to_tool_file_result=$func_to_host_file_result - ;; - esac -} -# end func_to_tool_file - - -# func_convert_file_noop ARG -# Copy ARG to func_to_host_file_result. -func_convert_file_noop () -{ - func_to_host_file_result="$1" -} -# end func_convert_file_noop - - -# func_convert_file_msys_to_w32 ARG -# Convert file name ARG from (mingw) MSYS to (mingw) w32 format; automatic -# conversion to w32 is not available inside the cwrapper. Returns result in -# func_to_host_file_result. -func_convert_file_msys_to_w32 () -{ - $opt_debug - func_to_host_file_result="$1" - if test -n "$1"; then - func_convert_core_msys_to_w32 "$1" - func_to_host_file_result="$func_convert_core_msys_to_w32_result" - fi - func_convert_file_check "$1" "$func_to_host_file_result" -} -# end func_convert_file_msys_to_w32 - - -# func_convert_file_cygwin_to_w32 ARG -# Convert file name ARG from Cygwin to w32 format. Returns result in -# func_to_host_file_result. -func_convert_file_cygwin_to_w32 () -{ - $opt_debug - func_to_host_file_result="$1" - if test -n "$1"; then - # because $build is cygwin, we call "the" cygpath in $PATH; no need to use - # LT_CYGPATH in this case. - func_to_host_file_result=`cygpath -m "$1"` - fi - func_convert_file_check "$1" "$func_to_host_file_result" -} -# end func_convert_file_cygwin_to_w32 - - -# func_convert_file_nix_to_w32 ARG -# Convert file name ARG from *nix to w32 format. Requires a wine environment -# and a working winepath. Returns result in func_to_host_file_result. -func_convert_file_nix_to_w32 () -{ - $opt_debug - func_to_host_file_result="$1" - if test -n "$1"; then - func_convert_core_file_wine_to_w32 "$1" - func_to_host_file_result="$func_convert_core_file_wine_to_w32_result" - fi - func_convert_file_check "$1" "$func_to_host_file_result" -} -# end func_convert_file_nix_to_w32 - - -# func_convert_file_msys_to_cygwin ARG -# Convert file name ARG from MSYS to Cygwin format. Requires LT_CYGPATH set. -# Returns result in func_to_host_file_result. -func_convert_file_msys_to_cygwin () -{ - $opt_debug - func_to_host_file_result="$1" - if test -n "$1"; then - func_convert_core_msys_to_w32 "$1" - func_cygpath -u "$func_convert_core_msys_to_w32_result" - func_to_host_file_result="$func_cygpath_result" - fi - func_convert_file_check "$1" "$func_to_host_file_result" -} -# end func_convert_file_msys_to_cygwin - - -# func_convert_file_nix_to_cygwin ARG -# Convert file name ARG from *nix to Cygwin format. Requires Cygwin installed -# in a wine environment, working winepath, and LT_CYGPATH set. Returns result -# in func_to_host_file_result. -func_convert_file_nix_to_cygwin () -{ - $opt_debug - func_to_host_file_result="$1" - if test -n "$1"; then - # convert from *nix to w32, then use cygpath to convert from w32 to cygwin. - func_convert_core_file_wine_to_w32 "$1" - func_cygpath -u "$func_convert_core_file_wine_to_w32_result" - func_to_host_file_result="$func_cygpath_result" - fi - func_convert_file_check "$1" "$func_to_host_file_result" -} -# end func_convert_file_nix_to_cygwin - - -############################################# -# $build to $host PATH CONVERSION FUNCTIONS # -############################################# -# invoked via `$to_host_path_cmd ARG' -# -# In each case, ARG is the path to be converted from $build to $host format. -# The result will be available in $func_to_host_path_result. -# -# Path separators are also converted from $build format to $host format. If -# ARG begins or ends with a path separator character, it is preserved (but -# converted to $host format) on output. -# -# All path conversion functions are named using the following convention: -# file name conversion function : func_convert_file_X_to_Y () -# path conversion function : func_convert_path_X_to_Y () -# where, for any given $build/$host combination the 'X_to_Y' value is the -# same. If conversion functions are added for new $build/$host combinations, -# the two new functions must follow this pattern, or func_init_to_host_path_cmd -# will break. - - -# func_init_to_host_path_cmd -# Ensures that function "pointer" variable $to_host_path_cmd is set to the -# appropriate value, based on the value of $to_host_file_cmd. -to_host_path_cmd= -func_init_to_host_path_cmd () -{ - $opt_debug - if test -z "$to_host_path_cmd"; then - func_stripname 'func_convert_file_' '' "$to_host_file_cmd" - to_host_path_cmd="func_convert_path_${func_stripname_result}" - fi -} - - -# func_to_host_path ARG -# Converts the path ARG from $build format to $host format. Return result -# in func_to_host_path_result. -func_to_host_path () -{ - $opt_debug - func_init_to_host_path_cmd - $to_host_path_cmd "$1" -} -# end func_to_host_path - - -# func_convert_path_noop ARG -# Copy ARG to func_to_host_path_result. -func_convert_path_noop () -{ - func_to_host_path_result="$1" -} -# end func_convert_path_noop - - -# func_convert_path_msys_to_w32 ARG -# Convert path ARG from (mingw) MSYS to (mingw) w32 format; automatic -# conversion to w32 is not available inside the cwrapper. Returns result in -# func_to_host_path_result. -func_convert_path_msys_to_w32 () -{ - $opt_debug - func_to_host_path_result="$1" - if test -n "$1"; then - # Remove leading and trailing path separator characters from ARG. MSYS - # behavior is inconsistent here; cygpath turns them into '.;' and ';.'; - # and winepath ignores them completely. - func_stripname : : "$1" - func_to_host_path_tmp1=$func_stripname_result - func_convert_core_msys_to_w32 "$func_to_host_path_tmp1" - func_to_host_path_result="$func_convert_core_msys_to_w32_result" - func_convert_path_check : ";" \ - "$func_to_host_path_tmp1" "$func_to_host_path_result" - func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" - fi -} -# end func_convert_path_msys_to_w32 - - -# func_convert_path_cygwin_to_w32 ARG -# Convert path ARG from Cygwin to w32 format. Returns result in -# func_to_host_file_result. -func_convert_path_cygwin_to_w32 () -{ - $opt_debug - func_to_host_path_result="$1" - if test -n "$1"; then - # See func_convert_path_msys_to_w32: - func_stripname : : "$1" - func_to_host_path_tmp1=$func_stripname_result - func_to_host_path_result=`cygpath -m -p "$func_to_host_path_tmp1"` - func_convert_path_check : ";" \ - "$func_to_host_path_tmp1" "$func_to_host_path_result" - func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" - fi -} -# end func_convert_path_cygwin_to_w32 - - -# func_convert_path_nix_to_w32 ARG -# Convert path ARG from *nix to w32 format. Requires a wine environment and -# a working winepath. Returns result in func_to_host_file_result. -func_convert_path_nix_to_w32 () -{ - $opt_debug - func_to_host_path_result="$1" - if test -n "$1"; then - # See func_convert_path_msys_to_w32: - func_stripname : : "$1" - func_to_host_path_tmp1=$func_stripname_result - func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1" - func_to_host_path_result="$func_convert_core_path_wine_to_w32_result" - func_convert_path_check : ";" \ - "$func_to_host_path_tmp1" "$func_to_host_path_result" - func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" - fi -} -# end func_convert_path_nix_to_w32 - - -# func_convert_path_msys_to_cygwin ARG -# Convert path ARG from MSYS to Cygwin format. Requires LT_CYGPATH set. -# Returns result in func_to_host_file_result. -func_convert_path_msys_to_cygwin () -{ - $opt_debug - func_to_host_path_result="$1" - if test -n "$1"; then - # See func_convert_path_msys_to_w32: - func_stripname : : "$1" - func_to_host_path_tmp1=$func_stripname_result - func_convert_core_msys_to_w32 "$func_to_host_path_tmp1" - func_cygpath -u -p "$func_convert_core_msys_to_w32_result" - func_to_host_path_result="$func_cygpath_result" - func_convert_path_check : : \ - "$func_to_host_path_tmp1" "$func_to_host_path_result" - func_convert_path_front_back_pathsep ":*" "*:" : "$1" - fi -} -# end func_convert_path_msys_to_cygwin - - -# func_convert_path_nix_to_cygwin ARG -# Convert path ARG from *nix to Cygwin format. Requires Cygwin installed in a -# a wine environment, working winepath, and LT_CYGPATH set. Returns result in -# func_to_host_file_result. -func_convert_path_nix_to_cygwin () -{ - $opt_debug - func_to_host_path_result="$1" - if test -n "$1"; then - # Remove leading and trailing path separator characters from - # ARG. msys behavior is inconsistent here, cygpath turns them - # into '.;' and ';.', and winepath ignores them completely. - func_stripname : : "$1" - func_to_host_path_tmp1=$func_stripname_result - func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1" - func_cygpath -u -p "$func_convert_core_path_wine_to_w32_result" - func_to_host_path_result="$func_cygpath_result" - func_convert_path_check : : \ - "$func_to_host_path_tmp1" "$func_to_host_path_result" - func_convert_path_front_back_pathsep ":*" "*:" : "$1" - fi -} -# end func_convert_path_nix_to_cygwin - - -# func_mode_compile arg... -func_mode_compile () -{ - $opt_debug - # Get the compilation command and the source file. - base_compile= - srcfile="$nonopt" # always keep a non-empty value in "srcfile" - suppress_opt=yes - suppress_output= - arg_mode=normal - libobj= - later= - pie_flag= - - for arg - do - case $arg_mode in - arg ) - # do not "continue". Instead, add this to base_compile - lastarg="$arg" - arg_mode=normal - ;; - - target ) - libobj="$arg" - arg_mode=normal - continue - ;; - - normal ) - # Accept any command-line options. - case $arg in - -o) - test -n "$libobj" && \ - func_fatal_error "you cannot specify \`-o' more than once" - arg_mode=target - continue - ;; - - -pie | -fpie | -fPIE) - func_append pie_flag " $arg" - continue - ;; - - -shared | -static | -prefer-pic | -prefer-non-pic) - func_append later " $arg" - continue - ;; - - -no-suppress) - suppress_opt=no - continue - ;; - - -Xcompiler) - arg_mode=arg # the next one goes into the "base_compile" arg list - continue # The current "srcfile" will either be retained or - ;; # replaced later. I would guess that would be a bug. - - -Wc,*) - func_stripname '-Wc,' '' "$arg" - args=$func_stripname_result - lastarg= - save_ifs="$IFS"; IFS=',' - for arg in $args; do - IFS="$save_ifs" - func_append_quoted lastarg "$arg" - done - IFS="$save_ifs" - func_stripname ' ' '' "$lastarg" - lastarg=$func_stripname_result - - # Add the arguments to base_compile. - func_append base_compile " $lastarg" - continue - ;; - - *) - # Accept the current argument as the source file. - # The previous "srcfile" becomes the current argument. - # - lastarg="$srcfile" - srcfile="$arg" - ;; - esac # case $arg - ;; - esac # case $arg_mode - - # Aesthetically quote the previous argument. - func_append_quoted base_compile "$lastarg" - done # for arg - - case $arg_mode in - arg) - func_fatal_error "you must specify an argument for -Xcompile" - ;; - target) - func_fatal_error "you must specify a target with \`-o'" - ;; - *) - # Get the name of the library object. - test -z "$libobj" && { - func_basename "$srcfile" - libobj="$func_basename_result" - } - ;; - esac - - # Recognize several different file suffixes. - # If the user specifies -o file.o, it is replaced with file.lo - case $libobj in - *.[cCFSifmso] | \ - *.ada | *.adb | *.ads | *.asm | \ - *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \ - *.[fF][09]? | *.for | *.java | *.go | *.obj | *.sx | *.cu | *.cup) - func_xform "$libobj" - libobj=$func_xform_result - ;; - esac - - case $libobj in - *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;; - *) - func_fatal_error "cannot determine name of library object from \`$libobj'" - ;; - esac - - func_infer_tag $base_compile - - for arg in $later; do - case $arg in - -shared) - test "$build_libtool_libs" != yes && \ - func_fatal_configuration "can not build a shared library" - build_old_libs=no - continue - ;; - - -static) - build_libtool_libs=no - build_old_libs=yes - continue - ;; - - -prefer-pic) - pic_mode=yes - continue - ;; - - -prefer-non-pic) - pic_mode=no - continue - ;; - esac - done - - func_quote_for_eval "$libobj" - test "X$libobj" != "X$func_quote_for_eval_result" \ - && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"' &()|`$[]' \ - && func_warning "libobj name \`$libobj' may not contain shell special characters." - func_dirname_and_basename "$obj" "/" "" - objname="$func_basename_result" - xdir="$func_dirname_result" - lobj=${xdir}$objdir/$objname - - test -z "$base_compile" && \ - func_fatal_help "you must specify a compilation command" - - # Delete any leftover library objects. - if test "$build_old_libs" = yes; then - removelist="$obj $lobj $libobj ${libobj}T" - else - removelist="$lobj $libobj ${libobj}T" - fi - - # On Cygwin there's no "real" PIC flag so we must build both object types - case $host_os in - cygwin* | mingw* | pw32* | os2* | cegcc*) - pic_mode=default - ;; - esac - if test "$pic_mode" = no && test "$deplibs_check_method" != pass_all; then - # non-PIC code in shared libraries is not supported - pic_mode=default - fi - - # Calculate the filename of the output object if compiler does - # not support -o with -c - if test "$compiler_c_o" = no; then - output_obj=`$ECHO "$srcfile" | $SED 's%^.*/%%; s%\.[^.]*$%%'`.${objext} - lockfile="$output_obj.lock" - else - output_obj= - need_locks=no - lockfile= - fi - - # Lock this critical section if it is needed - # We use this script file to make the link, it avoids creating a new file - if test "$need_locks" = yes; then - until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do - func_echo "Waiting for $lockfile to be removed" - sleep 2 - done - elif test "$need_locks" = warn; then - if test -f "$lockfile"; then - $ECHO "\ -*** ERROR, $lockfile exists and contains: -`cat $lockfile 2>/dev/null` - -This indicates that another process is trying to use the same -temporary object file, and libtool could not work around it because -your compiler does not support \`-c' and \`-o' together. If you -repeat this compilation, it may succeed, by chance, but you had better -avoid parallel builds (make -j) in this platform, or get a better -compiler." - - $opt_dry_run || $RM $removelist - exit $EXIT_FAILURE - fi - func_append removelist " $output_obj" - $ECHO "$srcfile" > "$lockfile" - fi - - $opt_dry_run || $RM $removelist - func_append removelist " $lockfile" - trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15 - - func_to_tool_file "$srcfile" func_convert_file_msys_to_w32 - srcfile=$func_to_tool_file_result - func_quote_for_eval "$srcfile" - qsrcfile=$func_quote_for_eval_result - - # Only build a PIC object if we are building libtool libraries. - if test "$build_libtool_libs" = yes; then - # Without this assignment, base_compile gets emptied. - fbsd_hideous_sh_bug=$base_compile - - if test "$pic_mode" != no; then - command="$base_compile $qsrcfile $pic_flag" - else - # Don't build PIC code - command="$base_compile $qsrcfile" - fi - - func_mkdir_p "$xdir$objdir" - - if test -z "$output_obj"; then - # Place PIC objects in $objdir - func_append command " -o $lobj" - fi - - func_show_eval_locale "$command" \ - 'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE' - - if test "$need_locks" = warn && - test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then - $ECHO "\ -*** ERROR, $lockfile contains: -`cat $lockfile 2>/dev/null` - -but it should contain: -$srcfile - -This indicates that another process is trying to use the same -temporary object file, and libtool could not work around it because -your compiler does not support \`-c' and \`-o' together. If you -repeat this compilation, it may succeed, by chance, but you had better -avoid parallel builds (make -j) in this platform, or get a better -compiler." - - $opt_dry_run || $RM $removelist - exit $EXIT_FAILURE - fi - - # Just move the object if needed, then go on to compile the next one - if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then - func_show_eval '$MV "$output_obj" "$lobj"' \ - 'error=$?; $opt_dry_run || $RM $removelist; exit $error' - fi - - # Allow error messages only from the first compilation. - if test "$suppress_opt" = yes; then - suppress_output=' >/dev/null 2>&1' - fi - fi - - # Only build a position-dependent object if we build old libraries. - if test "$build_old_libs" = yes; then - if test "$pic_mode" != yes; then - # Don't build PIC code - command="$base_compile $qsrcfile$pie_flag" - else - command="$base_compile $qsrcfile $pic_flag" - fi - if test "$compiler_c_o" = yes; then - func_append command " -o $obj" - fi - - # Suppress compiler output if we already did a PIC compilation. - func_append command "$suppress_output" - func_show_eval_locale "$command" \ - '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' - - if test "$need_locks" = warn && - test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then - $ECHO "\ -*** ERROR, $lockfile contains: -`cat $lockfile 2>/dev/null` - -but it should contain: -$srcfile - -This indicates that another process is trying to use the same -temporary object file, and libtool could not work around it because -your compiler does not support \`-c' and \`-o' together. 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- esac - # Quote arguments (to preserve shell metacharacters). - func_append_quoted args "$file" - done - - if test "X$opt_dry_run" = Xfalse; then - if test -n "$shlibpath_var"; then - # Export the shlibpath_var. - eval "export $shlibpath_var" - fi - - # Restore saved environment variables - for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES - do - eval "if test \"\${save_$lt_var+set}\" = set; then - $lt_var=\$save_$lt_var; export $lt_var - else - $lt_unset $lt_var - fi" - done - - # Now prepare to actually exec the command. - exec_cmd="\$cmd$args" - else - # Display what would be done. - if test -n "$shlibpath_var"; then - eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\"" - echo "export $shlibpath_var" - fi - $ECHO "$cmd$args" - exit $EXIT_SUCCESS - fi -} - -test "$opt_mode" = execute && func_mode_execute ${1+"$@"} - - -# func_mode_finish arg... -func_mode_finish () -{ - $opt_debug - libs= - libdirs= - admincmds= - - for opt in "$nonopt" ${1+"$@"} - do - if test -d "$opt"; then - func_append libdirs " $opt" - - elif test -f "$opt"; then - if func_lalib_unsafe_p "$opt"; then - func_append libs " $opt" - else - func_warning "\`$opt' is not a valid libtool archive" - fi - - else - func_fatal_error "invalid argument \`$opt'" - fi - done - - if test -n "$libs"; then - if test -n "$lt_sysroot"; then - sysroot_regex=`$ECHO "$lt_sysroot" | $SED "$sed_make_literal_regex"` - sysroot_cmd="s/\([ ']\)$sysroot_regex/\1/g;" - else - sysroot_cmd= - fi - - # Remove sysroot references - if $opt_dry_run; then - for lib in $libs; do - echo "removing references to $lt_sysroot and \`=' prefixes from $lib" - done - else - tmpdir=`func_mktempdir` - for lib in $libs; do - sed -e "${sysroot_cmd} s/\([ ']-[LR]\)=/\1/g; s/\([ ']\)=/\1/g" $lib \ - > $tmpdir/tmp-la - mv -f $tmpdir/tmp-la $lib - done - ${RM}r "$tmpdir" - fi - fi - - if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then - for libdir in $libdirs; do - if test -n "$finish_cmds"; then - # Do each command in the finish commands. - func_execute_cmds "$finish_cmds" 'admincmds="$admincmds -'"$cmd"'"' - fi - if test -n "$finish_eval"; then - # Do the single finish_eval. - eval cmds=\"$finish_eval\" - $opt_dry_run || eval "$cmds" || func_append admincmds " - $cmds" - fi - done - fi - - # Exit here if they wanted silent mode. - $opt_silent && exit $EXIT_SUCCESS - - if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then - echo "----------------------------------------------------------------------" - echo "Libraries have been installed in:" - for libdir in $libdirs; do - $ECHO " $libdir" - done - echo - echo "If you ever happen to want to link against installed libraries" - echo "in a given directory, LIBDIR, you must either use libtool, and" - echo "specify the full pathname of the library, or use the \`-LLIBDIR'" - echo "flag during linking and do at least one of the following:" - if test -n "$shlibpath_var"; then - echo " - add LIBDIR to the \`$shlibpath_var' environment variable" - echo " during execution" - fi - if test -n "$runpath_var"; then - echo " - add LIBDIR to the \`$runpath_var' environment variable" - echo " during linking" - fi - if test -n "$hardcode_libdir_flag_spec"; then - libdir=LIBDIR - eval flag=\"$hardcode_libdir_flag_spec\" - - $ECHO " - use the \`$flag' linker flag" - fi - if test -n "$admincmds"; then - $ECHO " - have your system administrator run these commands:$admincmds" - fi - if test -f /etc/ld.so.conf; then - echo " - have your system administrator add LIBDIR to \`/etc/ld.so.conf'" - fi - echo - - echo "See any operating system documentation about shared libraries for" - case $host in - solaris2.[6789]|solaris2.1[0-9]) - echo "more information, such as the ld(1), crle(1) and ld.so(8) manual" - echo "pages." - ;; - *) - echo "more information, such as the ld(1) and ld.so(8) manual pages." - ;; - esac - echo "----------------------------------------------------------------------" - fi - exit $EXIT_SUCCESS -} - -test "$opt_mode" = finish && func_mode_finish ${1+"$@"} - - -# func_mode_install arg... -func_mode_install () -{ - $opt_debug - # There may be an optional sh(1) argument at the beginning of - # install_prog (especially on Windows NT). - if test "$nonopt" = "$SHELL" || test "$nonopt" = /bin/sh || - # Allow the use of GNU shtool's install command. - case $nonopt in *shtool*) :;; *) false;; esac; then - # Aesthetically quote it. - func_quote_for_eval "$nonopt" - install_prog="$func_quote_for_eval_result " - arg=$1 - shift - else - install_prog= - arg=$nonopt - fi - - # The real first argument should be the name of the installation program. - # Aesthetically quote it. - func_quote_for_eval "$arg" - func_append install_prog "$func_quote_for_eval_result" - install_shared_prog=$install_prog - case " $install_prog " in - *[\\\ /]cp\ *) install_cp=: ;; - *) install_cp=false ;; - esac - - # We need to accept at least all the BSD install flags. - dest= - files= - opts= - prev= - install_type= - isdir=no - stripme= - no_mode=: - for arg - do - arg2= - if test -n "$dest"; then - func_append files " $dest" - dest=$arg - continue - fi - - case $arg in - -d) isdir=yes ;; - -f) - if $install_cp; then :; else - prev=$arg - fi - ;; - -g | -m | -o) - prev=$arg - ;; - -s) - stripme=" -s" - continue - ;; - -*) - ;; - *) - # If the previous option needed an argument, then skip it. - if test -n "$prev"; then - if test "x$prev" = x-m && test -n "$install_override_mode"; then - arg2=$install_override_mode - no_mode=false - fi - prev= - else - dest=$arg - continue - fi - ;; - esac - - # Aesthetically quote the argument. - func_quote_for_eval "$arg" - func_append install_prog " $func_quote_for_eval_result" - if test -n "$arg2"; then - func_quote_for_eval "$arg2" - fi - func_append install_shared_prog " $func_quote_for_eval_result" - done - - test -z "$install_prog" && \ - func_fatal_help "you must specify an install program" - - test -n "$prev" && \ - func_fatal_help "the \`$prev' option requires an argument" - - if test -n "$install_override_mode" && $no_mode; then - if $install_cp; then :; else - func_quote_for_eval "$install_override_mode" - func_append install_shared_prog " -m $func_quote_for_eval_result" - fi - fi - - if test -z "$files"; then - if test -z "$dest"; then - func_fatal_help "no file or destination specified" - else - func_fatal_help "you must specify a destination" - fi - fi - - # Strip any trailing slash from the destination. - func_stripname '' '/' "$dest" - dest=$func_stripname_result - - # Check to see that the destination is a directory. - test -d "$dest" && isdir=yes - if test "$isdir" = yes; then - destdir="$dest" - destname= - else - func_dirname_and_basename "$dest" "" "." - destdir="$func_dirname_result" - destname="$func_basename_result" - - # Not a directory, so check to see that there is only one file specified. - set dummy $files; shift - test "$#" -gt 1 && \ - func_fatal_help "\`$dest' is not a directory" - fi - case $destdir in - [\\/]* | [A-Za-z]:[\\/]*) ;; - *) - for file in $files; do - case $file in - *.lo) ;; - *) - func_fatal_help "\`$destdir' must be an absolute directory name" - ;; - esac - done - ;; - esac - - # This variable tells wrapper scripts just to set variables rather - # than running their programs. - libtool_install_magic="$magic" - - staticlibs= - future_libdirs= - current_libdirs= - for file in $files; do - - # Do each installation. - case $file in - *.$libext) - # Do the static libraries later. - func_append staticlibs " $file" - ;; - - *.la) - func_resolve_sysroot "$file" - file=$func_resolve_sysroot_result - - # Check to see that this really is a libtool archive. - func_lalib_unsafe_p "$file" \ - || func_fatal_help "\`$file' is not a valid libtool archive" - - library_names= - old_library= - relink_command= - func_source "$file" - - # Add the libdir to current_libdirs if it is the destination. - if test "X$destdir" = "X$libdir"; then - case "$current_libdirs " in - *" $libdir "*) ;; - *) func_append current_libdirs " $libdir" ;; - esac - else - # Note the libdir as a future libdir. - case "$future_libdirs " in - *" $libdir "*) ;; - *) func_append future_libdirs " $libdir" ;; - esac - fi - - func_dirname "$file" "/" "" - dir="$func_dirname_result" - func_append dir "$objdir" - - if test -n "$relink_command"; then - # Determine the prefix the user has applied to our future dir. - inst_prefix_dir=`$ECHO "$destdir" | $SED -e "s%$libdir\$%%"` - - # Don't allow the user to place us outside of our expected - # location b/c this prevents finding dependent libraries that - # are installed to the same prefix. - # At present, this check doesn't affect windows .dll's that - # are installed into $libdir/../bin (currently, that works fine) - # but it's something to keep an eye on. - test "$inst_prefix_dir" = "$destdir" && \ - func_fatal_error "error: cannot install \`$file' to a directory not ending in $libdir" - - if test -n "$inst_prefix_dir"; then - # Stick the inst_prefix_dir data into the link command. - relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"` - else - relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%%"` - fi - - func_warning "relinking \`$file'" - func_show_eval "$relink_command" \ - 'func_fatal_error "error: relink \`$file'\'' with the above command before installing it"' - fi - - # See the names of the shared library. - set dummy $library_names; shift - if test -n "$1"; then - realname="$1" - shift - - srcname="$realname" - test -n "$relink_command" && srcname="$realname"T - - # Install the shared library and build the symlinks. - func_show_eval "$install_shared_prog $dir/$srcname $destdir/$realname" \ - 'exit $?' - tstripme="$stripme" - case $host_os in - cygwin* | mingw* | pw32* | cegcc*) - case $realname in - *.dll.a) - tstripme="" - ;; - esac - ;; - esac - if test -n "$tstripme" && test -n "$striplib"; then - func_show_eval "$striplib $destdir/$realname" 'exit $?' - fi - - if test "$#" -gt 0; then - # Delete the old symlinks, and create new ones. - # Try `ln -sf' first, because the `ln' binary might depend on - # the symlink we replace! Solaris /bin/ln does not understand -f, - # so we also need to try rm && ln -s. - for linkname - do - test "$linkname" != "$realname" \ - && func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })" - done - fi - - # Do each command in the postinstall commands. - lib="$destdir/$realname" - func_execute_cmds "$postinstall_cmds" 'exit $?' - fi - - # Install the pseudo-library for information purposes. - func_basename "$file" - name="$func_basename_result" - instname="$dir/$name"i - func_show_eval "$install_prog $instname $destdir/$name" 'exit $?' - - # Maybe install the static library, too. - test -n "$old_library" && func_append staticlibs " $dir/$old_library" - ;; - - *.lo) - # Install (i.e. copy) a libtool object. - - # Figure out destination file name, if it wasn't already specified. - if test -n "$destname"; then - destfile="$destdir/$destname" - else - func_basename "$file" - destfile="$func_basename_result" - destfile="$destdir/$destfile" - fi - - # Deduce the name of the destination old-style object file. - case $destfile in - *.lo) - func_lo2o "$destfile" - staticdest=$func_lo2o_result - ;; - *.$objext) - staticdest="$destfile" - destfile= - ;; - *) - func_fatal_help "cannot copy a libtool object to \`$destfile'" - ;; - esac - - # Install the libtool object if requested. - test -n "$destfile" && \ - func_show_eval "$install_prog $file $destfile" 'exit $?' - - # Install the old object if enabled. - if test "$build_old_libs" = yes; then - # Deduce the name of the old-style object file. - func_lo2o "$file" - staticobj=$func_lo2o_result - func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?' - fi - exit $EXIT_SUCCESS - ;; - - *) - # Figure out destination file name, if it wasn't already specified. - if test -n "$destname"; then - destfile="$destdir/$destname" - else - func_basename "$file" - destfile="$func_basename_result" - destfile="$destdir/$destfile" - fi - - # If the file is missing, and there is a .exe on the end, strip it - # because it is most likely a libtool script we actually want to - # install - stripped_ext="" - case $file in - *.exe) - if test ! -f "$file"; then - func_stripname '' '.exe' "$file" - file=$func_stripname_result - stripped_ext=".exe" - fi - ;; - esac - - # Do a test to see if this is really a libtool program. - case $host in - *cygwin* | *mingw*) - if func_ltwrapper_executable_p "$file"; then - func_ltwrapper_scriptname "$file" - wrapper=$func_ltwrapper_scriptname_result - else - func_stripname '' '.exe' "$file" - wrapper=$func_stripname_result - fi - ;; - *) - wrapper=$file - ;; - esac - if func_ltwrapper_script_p "$wrapper"; then - notinst_deplibs= - relink_command= - - func_source "$wrapper" - - # Check the variables that should have been set. - test -z "$generated_by_libtool_version" && \ - func_fatal_error "invalid libtool wrapper script \`$wrapper'" - - finalize=yes - for lib in $notinst_deplibs; do - # Check to see that each library is installed. - libdir= - if test -f "$lib"; then - func_source "$lib" - fi - libfile="$libdir/"`$ECHO "$lib" | $SED 's%^.*/%%g'` ### testsuite: skip nested quoting test - if test -n "$libdir" && test ! -f "$libfile"; then - func_warning "\`$lib' has not been installed in \`$libdir'" - finalize=no - fi - done - - relink_command= - func_source "$wrapper" - - outputname= - if test "$fast_install" = no && test -n "$relink_command"; then - $opt_dry_run || { - if test "$finalize" = yes; then - tmpdir=`func_mktempdir` - func_basename "$file$stripped_ext" - file="$func_basename_result" - outputname="$tmpdir/$file" - # Replace the output file specification. - relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'` - - $opt_silent || { - func_quote_for_expand "$relink_command" - eval "func_echo $func_quote_for_expand_result" - } - if eval "$relink_command"; then : - else - func_error "error: relink \`$file' with the above command before installing it" - $opt_dry_run || ${RM}r "$tmpdir" - continue - fi - file="$outputname" - else - func_warning "cannot relink \`$file'" - fi - } - else - # Install the binary that we compiled earlier. - file=`$ECHO "$file$stripped_ext" | $SED "s%\([^/]*\)$%$objdir/\1%"` - fi - fi - - # remove .exe since cygwin /usr/bin/install will append another - # one anyway - case $install_prog,$host in - */usr/bin/install*,*cygwin*) - case $file:$destfile in - *.exe:*.exe) - # this is ok - ;; - *.exe:*) - destfile=$destfile.exe - ;; - *:*.exe) - func_stripname '' '.exe' "$destfile" - destfile=$func_stripname_result - ;; - esac - ;; - esac - func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?' - $opt_dry_run || if test -n "$outputname"; then - ${RM}r "$tmpdir" - fi - ;; - esac - done - - for file in $staticlibs; do - func_basename "$file" - name="$func_basename_result" - - # Set up the ranlib parameters. - oldlib="$destdir/$name" - func_to_tool_file "$oldlib" func_convert_file_msys_to_w32 - tool_oldlib=$func_to_tool_file_result - - func_show_eval "$install_prog \$file \$oldlib" 'exit $?' - - if test -n "$stripme" && test -n "$old_striplib"; then - func_show_eval "$old_striplib $tool_oldlib" 'exit $?' - fi - - # Do each command in the postinstall commands. - func_execute_cmds "$old_postinstall_cmds" 'exit $?' - done - - test -n "$future_libdirs" && \ - func_warning "remember to run \`$progname --finish$future_libdirs'" - - if test -n "$current_libdirs"; then - # Maybe just do a dry run. - $opt_dry_run && current_libdirs=" -n$current_libdirs" - exec_cmd='$SHELL $progpath $preserve_args --finish$current_libdirs' - else - exit $EXIT_SUCCESS - fi -} - -test "$opt_mode" = install && func_mode_install ${1+"$@"} - - -# func_generate_dlsyms outputname originator pic_p -# Extract symbols from dlprefiles and create ${outputname}S.o with -# a dlpreopen symbol table. -func_generate_dlsyms () -{ - $opt_debug - my_outputname="$1" - my_originator="$2" - my_pic_p="${3-no}" - my_prefix=`$ECHO "$my_originator" | sed 's%[^a-zA-Z0-9]%_%g'` - my_dlsyms= - - if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then - if test -n "$NM" && test -n "$global_symbol_pipe"; then - my_dlsyms="${my_outputname}S.c" - else - func_error "not configured to extract global symbols from dlpreopened files" - fi - fi - - if test -n "$my_dlsyms"; then - case $my_dlsyms in - "") ;; - *.c) - # Discover the nlist of each of the dlfiles. - nlist="$output_objdir/${my_outputname}.nm" - - func_show_eval "$RM $nlist ${nlist}S ${nlist}T" - - # Parse the name list into a source file. - func_verbose "creating $output_objdir/$my_dlsyms" - - $opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\ -/* $my_dlsyms - symbol resolution table for \`$my_outputname' dlsym emulation. */ -/* Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION */ - -#ifdef __cplusplus -extern \"C\" { -#endif - -#if defined(__GNUC__) && (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)) || (__GNUC__ > 4)) -#pragma GCC diagnostic ignored \"-Wstrict-prototypes\" -#endif - -/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ -#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE) -/* DATA imports from DLLs on WIN32 con't be const, because runtime - relocations are performed -- see ld's documentation on pseudo-relocs. */ -# define LT_DLSYM_CONST -#elif defined(__osf__) -/* This system does not cope well with relocations in const data. */ -# define LT_DLSYM_CONST -#else -# define LT_DLSYM_CONST const -#endif - -/* External symbol declarations for the compiler. */\ -" - - if test "$dlself" = yes; then - func_verbose "generating symbol list for \`$output'" - - $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist" - - # Add our own program objects to the symbol list. - progfiles=`$ECHO "$objs$old_deplibs" | $SP2NL | $SED "$lo2o" | $NL2SP` - for progfile in $progfiles; do - func_to_tool_file "$progfile" func_convert_file_msys_to_w32 - func_verbose "extracting global C symbols from \`$func_to_tool_file_result'" - $opt_dry_run || eval "$NM $func_to_tool_file_result | $global_symbol_pipe >> '$nlist'" - done - - if test -n "$exclude_expsyms"; then - $opt_dry_run || { - eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T' - eval '$MV "$nlist"T "$nlist"' - } - fi - - if test -n "$export_symbols_regex"; then - $opt_dry_run || { - eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T' - eval '$MV "$nlist"T "$nlist"' - } - fi - - # Prepare the list of exported symbols - if test -z "$export_symbols"; then - export_symbols="$output_objdir/$outputname.exp" - $opt_dry_run || { - $RM $export_symbols - eval "${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"' - case $host in - *cygwin* | *mingw* | *cegcc* ) - eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' - eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"' - ;; - esac - } - else - $opt_dry_run || { - eval "${SED} -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"' - eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T' - eval '$MV "$nlist"T "$nlist"' - case $host in - *cygwin* | *mingw* | *cegcc* ) - eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' - eval 'cat "$nlist" >> "$output_objdir/$outputname.def"' - ;; - esac - } - fi - fi - - for dlprefile in $dlprefiles; do - func_verbose "extracting global C symbols from \`$dlprefile'" - func_basename "$dlprefile" - name="$func_basename_result" - case $host in - *cygwin* | *mingw* | *cegcc* ) - # if an import library, we need to obtain dlname - if func_win32_import_lib_p "$dlprefile"; then - func_tr_sh "$dlprefile" - eval "curr_lafile=\$libfile_$func_tr_sh_result" - dlprefile_dlbasename="" - if test -n "$curr_lafile" && func_lalib_p "$curr_lafile"; then - # Use subshell, to avoid clobbering current variable values - dlprefile_dlname=`source "$curr_lafile" && echo "$dlname"` - if test -n "$dlprefile_dlname" ; then - func_basename "$dlprefile_dlname" - dlprefile_dlbasename="$func_basename_result" - else - # no lafile. user explicitly requested -dlpreopen . - $sharedlib_from_linklib_cmd "$dlprefile" - dlprefile_dlbasename=$sharedlib_from_linklib_result - fi - fi - $opt_dry_run || { - if test -n "$dlprefile_dlbasename" ; then - eval '$ECHO ": $dlprefile_dlbasename" >> "$nlist"' - else - func_warning "Could not compute DLL name from $name" - eval '$ECHO ": $name " >> "$nlist"' - fi - func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 - eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe | - $SED -e '/I __imp/d' -e 's/I __nm_/D /;s/_nm__//' >> '$nlist'" - } - else # not an import lib - $opt_dry_run || { - eval '$ECHO ": $name " >> "$nlist"' - func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 - eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'" - } - fi - ;; - *) - $opt_dry_run || { - eval '$ECHO ": $name " >> "$nlist"' - func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 - eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'" - } - ;; - esac - done - - $opt_dry_run || { - # Make sure we have at least an empty file. - test -f "$nlist" || : > "$nlist" - - if test -n "$exclude_expsyms"; then - $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T - $MV "$nlist"T "$nlist" - fi - - # Try sorting and uniquifying the output. - if $GREP -v "^: " < "$nlist" | - if sort -k 3 /dev/null 2>&1; then - sort -k 3 - else - sort +2 - fi | - uniq > "$nlist"S; then - : - else - $GREP -v "^: " < "$nlist" > "$nlist"S - fi - - if test -f "$nlist"S; then - eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"' - else - echo '/* NONE */' >> "$output_objdir/$my_dlsyms" - fi - - echo >> "$output_objdir/$my_dlsyms" "\ - -/* The mapping between symbol names and symbols. */ -typedef struct { - const char *name; - void *address; -} lt_dlsymlist; -extern LT_DLSYM_CONST lt_dlsymlist -lt_${my_prefix}_LTX_preloaded_symbols[]; -LT_DLSYM_CONST lt_dlsymlist -lt_${my_prefix}_LTX_preloaded_symbols[] = -{\ - { \"$my_originator\", (void *) 0 }," - - case $need_lib_prefix in - no) - eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms" - ;; - *) - eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms" - ;; - esac - echo >> "$output_objdir/$my_dlsyms" "\ - {0, (void *) 0} -}; - -/* This works around a problem in FreeBSD linker */ -#ifdef FREEBSD_WORKAROUND -static const void *lt_preloaded_setup() { - return lt_${my_prefix}_LTX_preloaded_symbols; -} -#endif - -#ifdef __cplusplus -} -#endif\ -" - } # !$opt_dry_run - - pic_flag_for_symtable= - case "$compile_command " in - *" -static "*) ;; - *) - case $host in - # compiling the symbol table file with pic_flag works around - # a FreeBSD bug that causes programs to crash when -lm is - # linked before any other PIC object. But we must not use - # pic_flag when linking with -static. The problem exists in - # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1. - *-*-freebsd2.*|*-*-freebsd3.0*|*-*-freebsdelf3.0*) - pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;; - *-*-hpux*) - pic_flag_for_symtable=" $pic_flag" ;; - *) - if test "X$my_pic_p" != Xno; then - pic_flag_for_symtable=" $pic_flag" - fi - ;; - esac - ;; - esac - symtab_cflags= - for arg in $LTCFLAGS; do - case $arg in - -pie | -fpie | -fPIE) ;; - *) func_append symtab_cflags " $arg" ;; - esac - done - - # Now compile the dynamic symbol file. - func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?' - - # Clean up the generated files. - func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T"' - - # Transform the symbol file into the correct name. - symfileobj="$output_objdir/${my_outputname}S.$objext" - case $host in - *cygwin* | *mingw* | *cegcc* ) - if test -f "$output_objdir/$my_outputname.def"; then - compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` - finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` - else - compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"` - finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"` - fi - ;; - *) - compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"` - finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"` - ;; - esac - ;; - *) - func_fatal_error "unknown suffix for \`$my_dlsyms'" - ;; - esac - else - # We keep going just in case the user didn't refer to - # lt_preloaded_symbols. The linker will fail if global_symbol_pipe - # really was required. - - # Nullify the symbol file. - compile_command=`$ECHO "$compile_command" | $SED "s% @SYMFILE@%%"` - finalize_command=`$ECHO "$finalize_command" | $SED "s% @SYMFILE@%%"` - fi -} - -# func_win32_libid arg -# return the library type of file 'arg' -# -# Need a lot of goo to handle *both* DLLs and import libs -# Has to be a shell function in order to 'eat' the argument -# that is supplied when $file_magic_command is called. -# Despite the name, also deal with 64 bit binaries. -func_win32_libid () -{ - $opt_debug - win32_libid_type="unknown" - win32_fileres=`file -L $1 2>/dev/null` - case $win32_fileres in - *ar\ archive\ import\ library*) # definitely import - win32_libid_type="x86 archive import" - ;; - *ar\ archive*) # could be an import, or static - # Keep the egrep pattern in sync with the one in _LT_CHECK_MAGIC_METHOD. - if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null | - $EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then - func_to_tool_file "$1" func_convert_file_msys_to_w32 - win32_nmres=`eval $NM -f posix -A \"$func_to_tool_file_result\" | - $SED -n -e ' - 1,100{ - / I /{ - s,.*,import, - p - q - } - }'` - case $win32_nmres in - import*) win32_libid_type="x86 archive import";; - *) win32_libid_type="x86 archive static";; - esac - fi - ;; - *DLL*) - win32_libid_type="x86 DLL" - ;; - *executable*) # but shell scripts are "executable" too... - case $win32_fileres in - *MS\ Windows\ PE\ Intel*) - win32_libid_type="x86 DLL" - ;; - esac - ;; - esac - $ECHO "$win32_libid_type" -} - -# func_cygming_dll_for_implib ARG -# -# Platform-specific function to extract the -# name of the DLL associated with the specified -# import library ARG. -# Invoked by eval'ing the libtool variable -# $sharedlib_from_linklib_cmd -# Result is available in the variable -# $sharedlib_from_linklib_result -func_cygming_dll_for_implib () -{ - $opt_debug - sharedlib_from_linklib_result=`$DLLTOOL --identify-strict --identify "$1"` -} - -# func_cygming_dll_for_implib_fallback_core SECTION_NAME LIBNAMEs -# -# The is the core of a fallback implementation of a -# platform-specific function to extract the name of the -# DLL associated with the specified import library LIBNAME. -# -# SECTION_NAME is either .idata$6 or .idata$7, depending -# on the platform and compiler that created the implib. -# -# Echos the name of the DLL associated with the -# specified import library. -func_cygming_dll_for_implib_fallback_core () -{ - $opt_debug - match_literal=`$ECHO "$1" | $SED "$sed_make_literal_regex"` - $OBJDUMP -s --section "$1" "$2" 2>/dev/null | - $SED '/^Contents of section '"$match_literal"':/{ - # Place marker at beginning of archive member dllname section - s/.*/====MARK====/ - p - d - } - # These lines can sometimes be longer than 43 characters, but - # are always uninteresting - /:[ ]*file format pe[i]\{,1\}-/d - /^In archive [^:]*:/d - # Ensure marker is printed - /^====MARK====/p - # Remove all lines with less than 43 characters - /^.\{43\}/!d - # From remaining lines, remove first 43 characters - s/^.\{43\}//' | - $SED -n ' - # Join marker and all lines until next marker into a single line - /^====MARK====/ b para - H - $ b para - b - :para - x - s/\n//g - # Remove the marker - s/^====MARK====// - # Remove trailing dots and whitespace - s/[\. \t]*$// - # Print - /./p' | - # we now have a list, one entry per line, of the stringified - # contents of the appropriate section of all members of the - # archive which possess that section. Heuristic: eliminate - # all those which have a first or second character that is - # a '.' (that is, objdump's representation of an unprintable - # character.) This should work for all archives with less than - # 0x302f exports -- but will fail for DLLs whose name actually - # begins with a literal '.' or a single character followed by - # a '.'. - # - # Of those that remain, print the first one. - $SED -e '/^\./d;/^.\./d;q' -} - -# func_cygming_gnu_implib_p ARG -# This predicate returns with zero status (TRUE) if -# ARG is a GNU/binutils-style import library. Returns -# with nonzero status (FALSE) otherwise. -func_cygming_gnu_implib_p () -{ - $opt_debug - func_to_tool_file "$1" func_convert_file_msys_to_w32 - func_cygming_gnu_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $EGREP ' (_head_[A-Za-z0-9_]+_[ad]l*|[A-Za-z0-9_]+_[ad]l*_iname)$'` - test -n "$func_cygming_gnu_implib_tmp" -} - -# func_cygming_ms_implib_p ARG -# This predicate returns with zero status (TRUE) if -# ARG is an MS-style import library. Returns -# with nonzero status (FALSE) otherwise. -func_cygming_ms_implib_p () -{ - $opt_debug - func_to_tool_file "$1" func_convert_file_msys_to_w32 - func_cygming_ms_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $GREP '_NULL_IMPORT_DESCRIPTOR'` - test -n "$func_cygming_ms_implib_tmp" -} - -# func_cygming_dll_for_implib_fallback ARG -# Platform-specific function to extract the -# name of the DLL associated with the specified -# import library ARG. -# -# This fallback implementation is for use when $DLLTOOL -# does not support the --identify-strict option. -# Invoked by eval'ing the libtool variable -# $sharedlib_from_linklib_cmd -# Result is available in the variable -# $sharedlib_from_linklib_result -func_cygming_dll_for_implib_fallback () -{ - $opt_debug - if func_cygming_gnu_implib_p "$1" ; then - # binutils import library - sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$7' "$1"` - elif func_cygming_ms_implib_p "$1" ; then - # ms-generated import library - sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$6' "$1"` - else - # unknown - sharedlib_from_linklib_result="" - fi -} - - -# func_extract_an_archive dir oldlib -func_extract_an_archive () -{ - $opt_debug - f_ex_an_ar_dir="$1"; shift - f_ex_an_ar_oldlib="$1" - if test "$lock_old_archive_extraction" = yes; then - lockfile=$f_ex_an_ar_oldlib.lock - until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do - func_echo "Waiting for $lockfile to be removed" - sleep 2 - done - fi - func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" \ - 'stat=$?; rm -f "$lockfile"; exit $stat' - if test "$lock_old_archive_extraction" = yes; then - $opt_dry_run || rm -f "$lockfile" - fi - if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then - : - else - func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib" - fi -} - - -# func_extract_archives gentop oldlib ... -func_extract_archives () -{ - $opt_debug - my_gentop="$1"; shift - my_oldlibs=${1+"$@"} - my_oldobjs="" - my_xlib="" - my_xabs="" - my_xdir="" - - for my_xlib in $my_oldlibs; do - # Extract the objects. - case $my_xlib in - [\\/]* | [A-Za-z]:[\\/]*) my_xabs="$my_xlib" ;; - *) my_xabs=`pwd`"/$my_xlib" ;; - esac - func_basename "$my_xlib" - my_xlib="$func_basename_result" - my_xlib_u=$my_xlib - while :; do - case " $extracted_archives " in - *" $my_xlib_u "*) - func_arith $extracted_serial + 1 - extracted_serial=$func_arith_result - my_xlib_u=lt$extracted_serial-$my_xlib ;; - *) break ;; - esac - done - extracted_archives="$extracted_archives $my_xlib_u" - my_xdir="$my_gentop/$my_xlib_u" - - func_mkdir_p "$my_xdir" - - case $host in - *-darwin*) - func_verbose "Extracting $my_xabs" - # Do not bother doing anything if just a dry run - $opt_dry_run || { - darwin_orig_dir=`pwd` - cd $my_xdir || exit $? - darwin_archive=$my_xabs - darwin_curdir=`pwd` - darwin_base_archive=`basename "$darwin_archive"` - darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true` - if test -n "$darwin_arches"; then - darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'` - darwin_arch= - func_verbose "$darwin_base_archive has multiple architectures $darwin_arches" - for darwin_arch in $darwin_arches ; do - func_mkdir_p "unfat-$$/${darwin_base_archive}-${darwin_arch}" - $LIPO -thin $darwin_arch -output "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" "${darwin_archive}" - cd "unfat-$$/${darwin_base_archive}-${darwin_arch}" - func_extract_an_archive "`pwd`" "${darwin_base_archive}" - cd "$darwin_curdir" - $RM "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" - done # $darwin_arches - ## Okay now we've a bunch of thin objects, gotta fatten them up :) - darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$basename" | sort -u` - darwin_file= - darwin_files= - for darwin_file in $darwin_filelist; do - darwin_files=`find unfat-$$ -name $darwin_file -print | sort | $NL2SP` - $LIPO -create -output "$darwin_file" $darwin_files - done # $darwin_filelist - $RM -rf unfat-$$ - cd "$darwin_orig_dir" - else - cd $darwin_orig_dir - func_extract_an_archive "$my_xdir" "$my_xabs" - fi # $darwin_arches - } # !$opt_dry_run - ;; - *) - func_extract_an_archive "$my_xdir" "$my_xabs" - ;; - esac - my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | sort | $NL2SP` - done - - func_extract_archives_result="$my_oldobjs" -} - - -# func_emit_wrapper [arg=no] -# -# Emit a libtool wrapper script on stdout. -# Don't directly open a file because we may want to -# incorporate the script contents within a cygwin/mingw -# wrapper executable. Must ONLY be called from within -# func_mode_link because it depends on a number of variables -# set therein. -# -# ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR -# variable will take. If 'yes', then the emitted script -# will assume that the directory in which it is stored is -# the $objdir directory. This is a cygwin/mingw-specific -# behavior. -func_emit_wrapper () -{ - func_emit_wrapper_arg1=${1-no} - - $ECHO "\ -#! $SHELL - -# $output - temporary wrapper script for $objdir/$outputname -# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION -# -# The $output program cannot be directly executed until all the libtool -# libraries that it depends on are installed. -# -# This wrapper script should never be moved out of the build directory. -# If it is, it will not operate correctly. - -# Sed substitution that helps us do robust quoting. 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Prints its arguments to stdout -# (redirection is the responsibility of the caller) -func_lt_dump_args () -{ - lt_dump_args_N=1; - for lt_arg - do - \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[\$lt_dump_args_N]: \$lt_arg\" - lt_dump_args_N=\`expr \$lt_dump_args_N + 1\` - done -} - -# Core function for launching the target application -func_exec_program_core () -{ -" - case $host in - # Backslashes separate directories on plain windows - *-*-mingw | *-*-os2* | *-cegcc*) - $ECHO "\ - if test -n \"\$lt_option_debug\"; then - \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[0]: \$progdir\\\\\$program\" 1>&2 - func_lt_dump_args \${1+\"\$@\"} 1>&2 - fi - exec \"\$progdir\\\\\$program\" \${1+\"\$@\"} -" - ;; - - *) - $ECHO "\ - if test -n \"\$lt_option_debug\"; then - \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[0]: \$progdir/\$program\" 1>&2 - func_lt_dump_args \${1+\"\$@\"} 1>&2 - fi - exec \"\$progdir/\$program\" \${1+\"\$@\"} -" - ;; - esac - $ECHO "\ - \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2 - exit 1 -} - -# A function to encapsulate launching the target application -# Strips options in the --lt-* namespace from \$@ and -# launches target application with the remaining arguments. -func_exec_program () -{ - case \" \$* \" in - *\\ --lt-*) - for lt_wr_arg - do - case \$lt_wr_arg in - --lt-*) ;; - *) set x \"\$@\" \"\$lt_wr_arg\"; shift;; - esac - shift - done ;; - esac - func_exec_program_core \${1+\"\$@\"} -} - - # Parse options - func_parse_lt_options \"\$0\" \${1+\"\$@\"} - - # Find the directory that this script lives in. - thisdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*$%%'\` - test \"x\$thisdir\" = \"x\$file\" && thisdir=. - - # Follow symbolic links until we get to the real thisdir. - file=\`ls -ld \"\$file\" | $SED -n 's/.*-> //p'\` - while test -n \"\$file\"; do - destdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*\$%%'\` - - # If there was a directory component, then change thisdir. - if test \"x\$destdir\" != \"x\$file\"; then - case \"\$destdir\" in - [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;; - *) thisdir=\"\$thisdir/\$destdir\" ;; - esac - fi - - file=\`\$ECHO \"\$file\" | $SED 's%^.*/%%'\` - file=\`ls -ld \"\$thisdir/\$file\" | $SED -n 's/.*-> //p'\` - done - - # Usually 'no', except on cygwin/mingw when embedded into - # the cwrapper. - WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_arg1 - if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then - # special case for '.' - if test \"\$thisdir\" = \".\"; then - thisdir=\`pwd\` - fi - # remove .libs from thisdir - case \"\$thisdir\" in - *[\\\\/]$objdir ) thisdir=\`\$ECHO \"\$thisdir\" | $SED 's%[\\\\/][^\\\\/]*$%%'\` ;; - $objdir ) thisdir=. ;; - esac - fi - - # Try to get the absolute directory name. - absdir=\`cd \"\$thisdir\" && pwd\` - test -n \"\$absdir\" && thisdir=\"\$absdir\" -" - - if test "$fast_install" = yes; then - $ECHO "\ - program=lt-'$outputname'$exeext - progdir=\"\$thisdir/$objdir\" - - if test ! -f \"\$progdir/\$program\" || - { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | ${SED} 1q\`; \\ - test \"X\$file\" != \"X\$progdir/\$program\"; }; then - - file=\"\$\$-\$program\" - - if test ! -d \"\$progdir\"; then - $MKDIR \"\$progdir\" - else - $RM \"\$progdir/\$file\" - fi" - - $ECHO "\ - - # relink executable if necessary - if test -n \"\$relink_command\"; then - if relink_command_output=\`eval \$relink_command 2>&1\`; then : - else - $ECHO \"\$relink_command_output\" >&2 - $RM \"\$progdir/\$file\" - exit 1 - fi - fi - - $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null || - { $RM \"\$progdir/\$program\"; - $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; } - $RM \"\$progdir/\$file\" - fi" - else - $ECHO "\ - program='$outputname' - progdir=\"\$thisdir/$objdir\" -" - fi - - $ECHO "\ - - if test -f \"\$progdir/\$program\"; then" - - # fixup the dll searchpath if we need to. - # - # Fix the DLL searchpath if we need to. Do this before prepending - # to shlibpath, because on Windows, both are PATH and uninstalled - # libraries must come first. - if test -n "$dllsearchpath"; then - $ECHO "\ - # Add the dll search path components to the executable PATH - PATH=$dllsearchpath:\$PATH -" - fi - - # Export our shlibpath_var if we have one. - if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then - $ECHO "\ - # Add our own library path to $shlibpath_var - $shlibpath_var=\"$temp_rpath\$$shlibpath_var\" - - # Some systems cannot cope with colon-terminated $shlibpath_var - # The second colon is a workaround for a bug in BeOS R4 sed - $shlibpath_var=\`\$ECHO \"\$$shlibpath_var\" | $SED 's/::*\$//'\` - - export $shlibpath_var -" - fi - - $ECHO "\ - if test \"\$libtool_execute_magic\" != \"$magic\"; then - # Run the actual program with our arguments. - func_exec_program \${1+\"\$@\"} - fi - else - # The program doesn't exist. - \$ECHO \"\$0: error: \\\`\$progdir/\$program' does not exist\" 1>&2 - \$ECHO \"This script is just a wrapper for \$program.\" 1>&2 - \$ECHO \"See the $PACKAGE documentation for more information.\" 1>&2 - exit 1 - fi -fi\ -" -} - - -# func_emit_cwrapperexe_src -# emit the source code for a wrapper executable on stdout -# Must ONLY be called from within func_mode_link because -# it depends on a number of variable set therein. -func_emit_cwrapperexe_src () -{ - cat < -#include -#ifdef _MSC_VER -# include -# include -# include -#else -# include -# include -# ifdef __CYGWIN__ -# include -# endif -#endif -#include -#include -#include -#include -#include -#include -#include -#include - -/* declarations of non-ANSI functions */ -#if defined(__MINGW32__) -# ifdef __STRICT_ANSI__ -int _putenv (const char *); -# endif -#elif defined(__CYGWIN__) -# ifdef __STRICT_ANSI__ -char *realpath (const char *, char *); -int putenv (char *); -int setenv (const char *, const char *, int); -# endif -/* #elif defined (other platforms) ... */ -#endif - -/* portability defines, excluding path handling macros */ -#if defined(_MSC_VER) -# define setmode _setmode -# define stat _stat -# define chmod _chmod -# define getcwd _getcwd -# define putenv _putenv -# define S_IXUSR _S_IEXEC -# ifndef _INTPTR_T_DEFINED -# define _INTPTR_T_DEFINED -# define intptr_t int -# endif -#elif defined(__MINGW32__) -# define setmode _setmode -# define stat _stat -# define chmod _chmod -# define getcwd _getcwd -# define putenv _putenv -#elif defined(__CYGWIN__) -# define HAVE_SETENV -# define FOPEN_WB "wb" -/* #elif defined (other platforms) ... */ -#endif - -#if defined(PATH_MAX) -# define LT_PATHMAX PATH_MAX -#elif defined(MAXPATHLEN) -# define LT_PATHMAX MAXPATHLEN -#else -# define LT_PATHMAX 1024 -#endif - -#ifndef S_IXOTH -# define S_IXOTH 0 -#endif -#ifndef S_IXGRP -# define S_IXGRP 0 -#endif - -/* path handling portability macros */ -#ifndef DIR_SEPARATOR -# define DIR_SEPARATOR '/' -# define PATH_SEPARATOR ':' -#endif - -#if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \ - defined (__OS2__) -# define HAVE_DOS_BASED_FILE_SYSTEM -# define FOPEN_WB "wb" -# ifndef DIR_SEPARATOR_2 -# define DIR_SEPARATOR_2 '\\' -# endif -# ifndef PATH_SEPARATOR_2 -# define PATH_SEPARATOR_2 ';' -# endif -#endif - -#ifndef DIR_SEPARATOR_2 -# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR) -#else /* DIR_SEPARATOR_2 */ -# define IS_DIR_SEPARATOR(ch) \ - (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2)) -#endif /* DIR_SEPARATOR_2 */ - -#ifndef PATH_SEPARATOR_2 -# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR) -#else /* PATH_SEPARATOR_2 */ -# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2) -#endif /* PATH_SEPARATOR_2 */ - -#ifndef FOPEN_WB -# define FOPEN_WB "w" -#endif -#ifndef _O_BINARY -# define _O_BINARY 0 -#endif - -#define XMALLOC(type, num) ((type *) xmalloc ((num) * sizeof(type))) -#define XFREE(stale) do { \ - if (stale) { free ((void *) stale); stale = 0; } \ -} while (0) - -#if defined(LT_DEBUGWRAPPER) -static int lt_debug = 1; -#else -static int lt_debug = 0; -#endif - -const char *program_name = "libtool-wrapper"; /* in case xstrdup fails */ - -void *xmalloc (size_t num); -char *xstrdup (const char *string); -const char *base_name (const char *name); -char *find_executable (const char *wrapper); -char *chase_symlinks (const char *pathspec); -int make_executable (const char *path); -int check_executable (const char *path); -char *strendzap (char *str, const char *pat); -void lt_debugprintf (const char *file, int line, const char *fmt, ...); -void lt_fatal (const char *file, int line, const char *message, ...); -static const char *nonnull (const char *s); -static const char *nonempty (const char *s); -void lt_setenv (const char *name, const char *value); -char *lt_extend_str (const char *orig_value, const char *add, int to_end); -void lt_update_exe_path (const char *name, const char *value); -void lt_update_lib_path (const char *name, const char *value); -char **prepare_spawn (char **argv); -void lt_dump_script (FILE *f); -EOF - - cat <= 0) - && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))) - return 1; - else - return 0; -} - -int -make_executable (const char *path) -{ - int rval = 0; - struct stat st; - - lt_debugprintf (__FILE__, __LINE__, "(make_executable): %s\n", - nonempty (path)); - if ((!path) || (!*path)) - return 0; - - if (stat (path, &st) >= 0) - { - rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR); - } - return rval; -} - -/* Searches for the full path of the wrapper. Returns - newly allocated full path name if found, NULL otherwise - Does not chase symlinks, even on platforms that support them. -*/ -char * -find_executable (const char *wrapper) -{ - int has_slash = 0; - const char *p; - const char *p_next; - /* static buffer for getcwd */ - char tmp[LT_PATHMAX + 1]; - int tmp_len; - char *concat_name; - - lt_debugprintf (__FILE__, __LINE__, "(find_executable): %s\n", - nonempty (wrapper)); - - if ((wrapper == NULL) || (*wrapper == '\0')) - return NULL; - - /* Absolute path? */ -#if defined (HAVE_DOS_BASED_FILE_SYSTEM) - if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':') - { - concat_name = xstrdup (wrapper); - if (check_executable (concat_name)) - return concat_name; - XFREE (concat_name); - } - else - { -#endif - if (IS_DIR_SEPARATOR (wrapper[0])) - { - concat_name = xstrdup (wrapper); - if (check_executable (concat_name)) - return concat_name; - XFREE (concat_name); - } -#if defined (HAVE_DOS_BASED_FILE_SYSTEM) - } -#endif - - for (p = wrapper; *p; p++) - if (*p == '/') - { - has_slash = 1; - break; - } - if (!has_slash) - { - /* no slashes; search PATH */ - const char *path = getenv ("PATH"); - if (path != NULL) - { - for (p = path; *p; p = p_next) - { - const char *q; - size_t p_len; - for (q = p; *q; q++) - if (IS_PATH_SEPARATOR (*q)) - break; - p_len = q - p; - p_next = (*q == '\0' ? q : q + 1); - if (p_len == 0) - { - /* empty path: current directory */ - if (getcwd (tmp, LT_PATHMAX) == NULL) - lt_fatal (__FILE__, __LINE__, "getcwd failed: %s", - nonnull (strerror (errno))); - tmp_len = strlen (tmp); - concat_name = - XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); - memcpy (concat_name, tmp, tmp_len); - concat_name[tmp_len] = '/'; - strcpy (concat_name + tmp_len + 1, wrapper); - } - else - { - concat_name = - XMALLOC (char, p_len + 1 + strlen (wrapper) + 1); - memcpy (concat_name, p, p_len); - concat_name[p_len] = '/'; - strcpy (concat_name + p_len + 1, wrapper); - } - if (check_executable (concat_name)) - return concat_name; - XFREE (concat_name); - } - } - /* not found in PATH; assume curdir */ - } - /* Relative path | not found in path: prepend cwd */ - if (getcwd (tmp, LT_PATHMAX) == NULL) - lt_fatal (__FILE__, __LINE__, "getcwd failed: %s", - nonnull (strerror (errno))); - tmp_len = strlen (tmp); - concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); - memcpy (concat_name, tmp, tmp_len); - concat_name[tmp_len] = '/'; - strcpy (concat_name + tmp_len + 1, wrapper); - - if (check_executable (concat_name)) - return concat_name; - XFREE (concat_name); - return NULL; -} - -char * -chase_symlinks (const char *pathspec) -{ -#ifndef S_ISLNK - return xstrdup (pathspec); -#else - char buf[LT_PATHMAX]; - struct stat s; - char *tmp_pathspec = xstrdup (pathspec); - char *p; - int has_symlinks = 0; - while (strlen (tmp_pathspec) && !has_symlinks) - { - lt_debugprintf (__FILE__, __LINE__, - "checking path component for symlinks: %s\n", - tmp_pathspec); - if (lstat (tmp_pathspec, &s) == 0) - { - if (S_ISLNK (s.st_mode) != 0) - { - has_symlinks = 1; - break; - } - - /* search backwards for last DIR_SEPARATOR */ - p = tmp_pathspec + strlen (tmp_pathspec) - 1; - while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) - p--; - if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) - { - /* no more DIR_SEPARATORS left */ - break; - } - *p = '\0'; - } - else - { - lt_fatal (__FILE__, __LINE__, - "error accessing file \"%s\": %s", - tmp_pathspec, nonnull (strerror (errno))); - } - } - XFREE (tmp_pathspec); - - if (!has_symlinks) - { - return xstrdup (pathspec); - } - - tmp_pathspec = realpath (pathspec, buf); - if (tmp_pathspec == 0) - { - lt_fatal (__FILE__, __LINE__, - "could not follow symlinks for %s", pathspec); - } - return xstrdup (tmp_pathspec); -#endif -} - -char * -strendzap (char *str, const char *pat) -{ - size_t len, patlen; - - assert (str != NULL); - assert (pat != NULL); - - len = strlen (str); - patlen = strlen (pat); - - if (patlen <= len) - { - str += len - patlen; - if (strcmp (str, pat) == 0) - *str = '\0'; - } - return str; -} - -void -lt_debugprintf (const char *file, int line, const char *fmt, ...) -{ - va_list args; - if (lt_debug) - { - (void) fprintf (stderr, "%s:%s:%d: ", program_name, file, line); - va_start (args, fmt); - (void) vfprintf (stderr, fmt, args); - va_end (args); - } -} - -static void -lt_error_core (int exit_status, const char *file, - int line, const char *mode, - const char *message, va_list ap) -{ - fprintf (stderr, "%s:%s:%d: %s: ", program_name, file, line, mode); - vfprintf (stderr, message, ap); - fprintf (stderr, ".\n"); - - if (exit_status >= 0) - exit (exit_status); -} - -void -lt_fatal (const char *file, int line, const char *message, ...) -{ - va_list ap; - va_start (ap, message); - lt_error_core (EXIT_FAILURE, file, line, "FATAL", message, ap); - va_end (ap); -} - -static const char * -nonnull (const char *s) -{ - return s ? s : "(null)"; -} - -static const char * -nonempty (const char *s) -{ - return (s && !*s) ? "(empty)" : nonnull (s); -} - -void -lt_setenv (const char *name, const char *value) -{ - lt_debugprintf (__FILE__, __LINE__, - "(lt_setenv) setting '%s' to '%s'\n", - nonnull (name), nonnull (value)); - { -#ifdef HAVE_SETENV - /* always make a copy, for consistency with !HAVE_SETENV */ - char *str = xstrdup (value); - setenv (name, str, 1); -#else - int len = strlen (name) + 1 + strlen (value) + 1; - char *str = XMALLOC (char, len); - sprintf (str, "%s=%s", name, value); - if (putenv (str) != EXIT_SUCCESS) - { - XFREE (str); - } -#endif - } -} - -char * -lt_extend_str (const char *orig_value, const char *add, int to_end) -{ - char *new_value; - if (orig_value && *orig_value) - { - int orig_value_len = strlen (orig_value); - int add_len = strlen (add); - new_value = XMALLOC (char, add_len + orig_value_len + 1); - if (to_end) - { - strcpy (new_value, orig_value); - strcpy (new_value + orig_value_len, add); - } - else - { - strcpy (new_value, add); - strcpy (new_value + add_len, orig_value); - } - } - else - { - new_value = xstrdup (add); - } - return new_value; -} - -void -lt_update_exe_path (const char *name, const char *value) -{ - lt_debugprintf (__FILE__, __LINE__, - "(lt_update_exe_path) modifying '%s' by prepending '%s'\n", - nonnull (name), nonnull (value)); - - if (name && *name && value && *value) - { - char *new_value = lt_extend_str (getenv (name), value, 0); - /* some systems can't cope with a ':'-terminated path #' */ - int len = strlen (new_value); - while (((len = strlen (new_value)) > 0) && IS_PATH_SEPARATOR (new_value[len-1])) - { - new_value[len-1] = '\0'; - } - lt_setenv (name, new_value); - XFREE (new_value); - } -} - -void -lt_update_lib_path (const char *name, const char *value) -{ - lt_debugprintf (__FILE__, __LINE__, - "(lt_update_lib_path) modifying '%s' by prepending '%s'\n", - nonnull (name), nonnull (value)); - - if (name && *name && value && *value) - { - char *new_value = lt_extend_str (getenv (name), value, 0); - lt_setenv (name, new_value); - XFREE (new_value); - } -} - -EOF - case $host_os in - mingw*) - cat <<"EOF" - -/* Prepares an argument vector before calling spawn(). - Note that spawn() does not by itself call the command interpreter - (getenv ("COMSPEC") != NULL ? getenv ("COMSPEC") : - ({ OSVERSIONINFO v; v.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); - GetVersionEx(&v); - v.dwPlatformId == VER_PLATFORM_WIN32_NT; - }) ? "cmd.exe" : "command.com"). - Instead it simply concatenates the arguments, separated by ' ', and calls - CreateProcess(). We must quote the arguments since Win32 CreateProcess() - interprets characters like ' ', '\t', '\\', '"' (but not '<' and '>') in a - special way: - - Space and tab are interpreted as delimiters. They are not treated as - delimiters if they are surrounded by double quotes: "...". - - Unescaped double quotes are removed from the input. Their only effect is - that within double quotes, space and tab are treated like normal - characters. - - Backslashes not followed by double quotes are not special. - - But 2*n+1 backslashes followed by a double quote become - n backslashes followed by a double quote (n >= 0): - \" -> " - \\\" -> \" - \\\\\" -> \\" - */ -#define SHELL_SPECIAL_CHARS "\"\\ \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037" -#define SHELL_SPACE_CHARS " \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037" -char ** -prepare_spawn (char **argv) -{ - size_t argc; - char **new_argv; - size_t i; - - /* Count number of arguments. */ - for (argc = 0; argv[argc] != NULL; argc++) - ; - - /* Allocate new argument vector. */ - new_argv = XMALLOC (char *, argc + 1); - - /* Put quoted arguments into the new argument vector. */ - for (i = 0; i < argc; i++) - { - const char *string = argv[i]; - - if (string[0] == '\0') - new_argv[i] = xstrdup ("\"\""); - else if (strpbrk (string, SHELL_SPECIAL_CHARS) != NULL) - { - int quote_around = (strpbrk (string, SHELL_SPACE_CHARS) != NULL); - size_t length; - unsigned int backslashes; - const char *s; - char *quoted_string; - char *p; - - length = 0; - backslashes = 0; - if (quote_around) - length++; - for (s = string; *s != '\0'; s++) - { - char c = *s; - if (c == '"') - length += backslashes + 1; - length++; - if (c == '\\') - backslashes++; - else - backslashes = 0; - } - if (quote_around) - length += backslashes + 1; - - quoted_string = XMALLOC (char, length + 1); - - p = quoted_string; - backslashes = 0; - if (quote_around) - *p++ = '"'; - for (s = string; *s != '\0'; s++) - { - char c = *s; - if (c == '"') - { - unsigned int j; - for (j = backslashes + 1; j > 0; j--) - *p++ = '\\'; - } - *p++ = c; - if (c == '\\') - backslashes++; - else - backslashes = 0; - } - if (quote_around) - { - unsigned int j; - for (j = backslashes; j > 0; j--) - *p++ = '\\'; - *p++ = '"'; - } - *p = '\0'; - - new_argv[i] = quoted_string; - } - else - new_argv[i] = (char *) string; - } - new_argv[argc] = NULL; - - return new_argv; -} -EOF - ;; - esac - - cat <<"EOF" -void lt_dump_script (FILE* f) -{ -EOF - func_emit_wrapper yes | - $SED -n -e ' -s/^\(.\{79\}\)\(..*\)/\1\ -\2/ -h -s/\([\\"]\)/\\\1/g -s/$/\\n/ -s/\([^\n]*\).*/ fputs ("\1", f);/p -g -D' - cat <<"EOF" -} -EOF -} -# end: func_emit_cwrapperexe_src - -# func_win32_import_lib_p ARG -# True if ARG is an import lib, as indicated by $file_magic_cmd -func_win32_import_lib_p () -{ - $opt_debug - case `eval $file_magic_cmd \"\$1\" 2>/dev/null | $SED -e 10q` in - *import*) : ;; - *) false ;; - esac -} - -# func_mode_link arg... -func_mode_link () -{ - $opt_debug - case $host in - *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) - # It is impossible to link a dll without this setting, and - # we shouldn't force the makefile maintainer to figure out - # which system we are compiling for in order to pass an extra - # flag for every libtool invocation. - # allow_undefined=no - - # FIXME: Unfortunately, there are problems with the above when trying - # to make a dll which has undefined symbols, in which case not - # even a static library is built. For now, we need to specify - # -no-undefined on the libtool link line when we can be certain - # that all symbols are satisfied, otherwise we get a static library. - allow_undefined=yes - ;; - *) - allow_undefined=yes - ;; - esac - libtool_args=$nonopt - base_compile="$nonopt $@" - compile_command=$nonopt - finalize_command=$nonopt - - compile_rpath= - finalize_rpath= - compile_shlibpath= - finalize_shlibpath= - convenience= - old_convenience= - deplibs= - old_deplibs= - compiler_flags= - linker_flags= - dllsearchpath= - lib_search_path=`pwd` - inst_prefix_dir= - new_inherited_linker_flags= - - avoid_version=no - bindir= - dlfiles= - dlprefiles= - dlself=no - export_dynamic=no - export_symbols= - export_symbols_regex= - generated= - libobjs= - ltlibs= - module=no - no_install=no - objs= - non_pic_objects= - precious_files_regex= - prefer_static_libs=no - preload=no - prev= - prevarg= - release= - rpath= - xrpath= - perm_rpath= - temp_rpath= - thread_safe=no - vinfo= - vinfo_number=no - weak_libs= - single_module="${wl}-single_module" - func_infer_tag $base_compile - - # We need to know -static, to get the right output filenames. - for arg - do - case $arg in - -shared) - test "$build_libtool_libs" != yes && \ - func_fatal_configuration "can not build a shared library" - build_old_libs=no - break - ;; - -all-static | -static | -static-libtool-libs) - case $arg in - -all-static) - if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then - func_warning "complete static linking is impossible in this configuration" - fi - if test -n "$link_static_flag"; then - dlopen_self=$dlopen_self_static - fi - prefer_static_libs=yes - ;; - -static) - if test -z "$pic_flag" && test -n "$link_static_flag"; then - dlopen_self=$dlopen_self_static - fi - prefer_static_libs=built - ;; - -static-libtool-libs) - if test -z "$pic_flag" && test -n "$link_static_flag"; then - dlopen_self=$dlopen_self_static - fi - prefer_static_libs=yes - ;; - esac - build_libtool_libs=no - build_old_libs=yes - break - ;; - esac - done - - # See if our shared archives depend on static archives. - test -n "$old_archive_from_new_cmds" && build_old_libs=yes - - # Go through the arguments, transforming them on the way. - while test "$#" -gt 0; do - arg="$1" - shift - func_quote_for_eval "$arg" - qarg=$func_quote_for_eval_unquoted_result - func_append libtool_args " $func_quote_for_eval_result" - - # If the previous option needs an argument, assign it. - if test -n "$prev"; 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do - case $file in - *.la) ;; - *) - func_fatal_help "libraries can \`-dlopen' only libtool libraries: $file" - ;; - esac - done - ;; - prog) - compile_deplibs= - finalize_deplibs= - alldeplibs=no - newdlfiles= - newdlprefiles= - passes="conv scan dlopen dlpreopen link" - ;; - *) passes="conv" - ;; - esac - - for pass in $passes; do - # The preopen pass in lib mode reverses $deplibs; put it back here - # so that -L comes before libs that need it for instance... - if test "$linkmode,$pass" = "lib,link"; then - ## FIXME: Find the place where the list is rebuilt in the wrong - ## order, and fix it there properly - tmp_deplibs= - for deplib in $deplibs; do - tmp_deplibs="$deplib $tmp_deplibs" - done - deplibs="$tmp_deplibs" - fi - - if test "$linkmode,$pass" = "lib,link" || - test "$linkmode,$pass" = "prog,scan"; then - libs="$deplibs" - deplibs= - fi - if test "$linkmode" = prog; then - case $pass in - dlopen) libs="$dlfiles" ;; - dlpreopen) libs="$dlprefiles" ;; - link) - libs="$deplibs %DEPLIBS%" - test "X$link_all_deplibs" != Xno && libs="$libs $dependency_libs" - ;; - esac - fi - if test "$linkmode,$pass" = "lib,dlpreopen"; then - # Collect and forward deplibs of preopened libtool libs - for lib in $dlprefiles; do - # Ignore non-libtool-libs - dependency_libs= - func_resolve_sysroot "$lib" - case $lib in - *.la) func_source "$func_resolve_sysroot_result" ;; - esac - - # Collect preopened libtool deplibs, except any this library - # has declared as weak libs - for deplib in $dependency_libs; do - func_basename "$deplib" - deplib_base=$func_basename_result - case " $weak_libs " in - *" $deplib_base "*) ;; - *) func_append deplibs " $deplib" ;; - esac - done - done - libs="$dlprefiles" - fi - if test "$pass" = dlopen; then - # Collect dlpreopened libraries - save_deplibs="$deplibs" - deplibs= - fi - - for deplib in $libs; do - lib= - found=no - case $deplib in - -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \ - |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*) - if test "$linkmode,$pass" = "prog,link"; then - compile_deplibs="$deplib $compile_deplibs" - finalize_deplibs="$deplib $finalize_deplibs" - else - func_append compiler_flags " $deplib" - if test "$linkmode" = lib ; then - case "$new_inherited_linker_flags " in - *" $deplib "*) ;; - * ) func_append new_inherited_linker_flags " $deplib" ;; - esac - fi - fi - continue - ;; - -l*) - if test "$linkmode" != lib && test "$linkmode" != prog; then - func_warning "\`-l' is ignored for archives/objects" - continue - fi - func_stripname '-l' '' "$deplib" - name=$func_stripname_result - if test "$linkmode" = lib; then - searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path" - else - searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path" - fi - for searchdir in $searchdirs; do - for search_ext in .la $std_shrext .so .a; do - # Search the libtool library - lib="$searchdir/lib${name}${search_ext}" - if test -f "$lib"; then - if test "$search_ext" = ".la"; then - found=yes - else - found=no - fi - break 2 - fi - done - done - if test "$found" != yes; then - # deplib doesn't seem to be a libtool library - if test "$linkmode,$pass" = "prog,link"; then - compile_deplibs="$deplib $compile_deplibs" - finalize_deplibs="$deplib $finalize_deplibs" - else - deplibs="$deplib $deplibs" - test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs" - fi - continue - else # deplib is a libtool library - # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib, - # We need to do some special things here, and not later. - if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then - case " $predeps $postdeps " in - *" $deplib "*) - if func_lalib_p "$lib"; then - library_names= - old_library= - func_source "$lib" - for l in $old_library $library_names; do - ll="$l" - done - if test "X$ll" = "X$old_library" ; then # only static version available - found=no - func_dirname "$lib" "" "." - ladir="$func_dirname_result" - lib=$ladir/$old_library - if test "$linkmode,$pass" = "prog,link"; then - compile_deplibs="$deplib $compile_deplibs" - finalize_deplibs="$deplib $finalize_deplibs" - else - deplibs="$deplib $deplibs" - test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs" - fi - continue - fi - fi - ;; - *) ;; - esac - fi - fi - ;; # -l - *.ltframework) - if test "$linkmode,$pass" = "prog,link"; then - compile_deplibs="$deplib $compile_deplibs" - finalize_deplibs="$deplib $finalize_deplibs" - else - deplibs="$deplib $deplibs" - if test "$linkmode" = lib ; then - case "$new_inherited_linker_flags " in - *" $deplib "*) ;; - * ) func_append new_inherited_linker_flags " $deplib" ;; - esac - fi - fi - continue - ;; - -L*) - case $linkmode in - lib) - deplibs="$deplib $deplibs" - test "$pass" = conv && continue - newdependency_libs="$deplib $newdependency_libs" - func_stripname '-L' '' "$deplib" - func_resolve_sysroot "$func_stripname_result" - func_append newlib_search_path " $func_resolve_sysroot_result" - ;; - prog) - if test "$pass" = conv; then - deplibs="$deplib $deplibs" - continue - fi - if test "$pass" = scan; then - deplibs="$deplib $deplibs" - else - compile_deplibs="$deplib $compile_deplibs" - finalize_deplibs="$deplib $finalize_deplibs" - fi - func_stripname '-L' '' "$deplib" - func_resolve_sysroot "$func_stripname_result" - func_append newlib_search_path " $func_resolve_sysroot_result" - ;; - *) - func_warning "\`-L' is ignored for archives/objects" - ;; - esac # linkmode - continue - ;; # -L - -R*) - if test "$pass" = link; then - func_stripname '-R' '' "$deplib" - func_resolve_sysroot "$func_stripname_result" - dir=$func_resolve_sysroot_result - # Make sure the xrpath contains only unique directories. - case "$xrpath " in - *" $dir "*) ;; - *) func_append xrpath " $dir" ;; - esac - fi - deplibs="$deplib $deplibs" - continue - ;; - *.la) - func_resolve_sysroot "$deplib" - lib=$func_resolve_sysroot_result - ;; - *.$libext) - if test "$pass" = conv; then - deplibs="$deplib $deplibs" - continue - fi - case $linkmode in - lib) - # Linking convenience modules into shared libraries is allowed, - # but linking other static libraries is non-portable. - case " $dlpreconveniencelibs " in - *" $deplib "*) ;; - *) - valid_a_lib=no - case $deplibs_check_method in - match_pattern*) - set dummy $deplibs_check_method; shift - match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"` - if eval "\$ECHO \"$deplib\"" 2>/dev/null | $SED 10q \ - | $EGREP "$match_pattern_regex" > /dev/null; then - valid_a_lib=yes - fi - ;; - pass_all) - valid_a_lib=yes - ;; - esac - if test "$valid_a_lib" != yes; then - echo - $ECHO "*** Warning: Trying to link with static lib archive $deplib." - echo "*** I have the capability to make that library automatically link in when" - echo "*** you link to this library. But I can only do this if you have a" - echo "*** shared version of the library, which you do not appear to have" - echo "*** because the file extensions .$libext of this argument makes me believe" - echo "*** that it is just a static archive that I should not use here." - else - echo - $ECHO "*** Warning: Linking the shared library $output against the" - $ECHO "*** static library $deplib is not portable!" - deplibs="$deplib $deplibs" - fi - ;; - esac - continue - ;; - prog) - if test "$pass" != link; then - deplibs="$deplib $deplibs" - else - compile_deplibs="$deplib $compile_deplibs" - finalize_deplibs="$deplib $finalize_deplibs" - fi - continue - ;; - esac # linkmode - ;; # *.$libext - *.lo | *.$objext) - if test "$pass" = conv; then - deplibs="$deplib $deplibs" - elif test "$linkmode" = prog; then - if test "$pass" = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then - # If there is no dlopen support or we're linking statically, - # we need to preload. - func_append newdlprefiles " $deplib" - compile_deplibs="$deplib $compile_deplibs" - finalize_deplibs="$deplib $finalize_deplibs" - else - func_append newdlfiles " $deplib" - fi - fi - continue - ;; - %DEPLIBS%) - alldeplibs=yes - continue - ;; - esac # case $deplib - - if test "$found" = yes || test -f "$lib"; then : - else - func_fatal_error "cannot find the library \`$lib' or unhandled argument \`$deplib'" - fi - - # Check to see that this really is a libtool archive. - func_lalib_unsafe_p "$lib" \ - || func_fatal_error "\`$lib' is not a valid libtool archive" - - func_dirname "$lib" "" "." - ladir="$func_dirname_result" - - dlname= - dlopen= - dlpreopen= - libdir= - library_names= - old_library= - inherited_linker_flags= - # If the library was installed with an old release of libtool, - # it will not redefine variables installed, or shouldnotlink - installed=yes - shouldnotlink=no - avoidtemprpath= - - - # Read the .la file - func_source "$lib" - - # Convert "-framework foo" to "foo.ltframework" - if test -n "$inherited_linker_flags"; then - tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'` - for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do - case " $new_inherited_linker_flags " in - *" $tmp_inherited_linker_flag "*) ;; - *) func_append new_inherited_linker_flags " $tmp_inherited_linker_flag";; - esac - done - fi - dependency_libs=`$ECHO " $dependency_libs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` - if test "$linkmode,$pass" = "lib,link" || - test "$linkmode,$pass" = "prog,scan" || - { test "$linkmode" != prog && test "$linkmode" != lib; }; then - test -n "$dlopen" && func_append dlfiles " $dlopen" - test -n "$dlpreopen" && func_append dlprefiles " $dlpreopen" - fi - - if test "$pass" = conv; then - # Only check for convenience libraries - deplibs="$lib $deplibs" - if test -z "$libdir"; then - if test -z "$old_library"; then - func_fatal_error "cannot find name of link library for \`$lib'" - fi - # It is a libtool convenience library, so add in its objects. - func_append convenience " $ladir/$objdir/$old_library" - func_append old_convenience " $ladir/$objdir/$old_library" - tmp_libs= - for deplib in $dependency_libs; do - deplibs="$deplib $deplibs" - if $opt_preserve_dup_deps ; then - case "$tmp_libs " in - *" $deplib "*) func_append specialdeplibs " $deplib" ;; - esac - fi - func_append tmp_libs " $deplib" - done - elif test "$linkmode" != prog && test "$linkmode" != lib; then - func_fatal_error "\`$lib' is not a convenience library" - fi - continue - fi # $pass = conv - - - # Get the name of the library we link against. - linklib= - if test -n "$old_library" && - { test "$prefer_static_libs" = yes || - test "$prefer_static_libs,$installed" = "built,no"; }; then - linklib=$old_library - else - for l in $old_library $library_names; do - linklib="$l" - done - fi - if test -z "$linklib"; then - func_fatal_error "cannot find name of link library for \`$lib'" - fi - - # This library was specified with -dlopen. - if test "$pass" = dlopen; then - if test -z "$libdir"; then - func_fatal_error "cannot -dlopen a convenience library: \`$lib'" - fi - if test -z "$dlname" || - test "$dlopen_support" != yes || - test "$build_libtool_libs" = no; then - # If there is no dlname, no dlopen support or we're linking - # statically, we need to preload. 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Therefore, ensure we extract - # symbols from the import library if a shared library is present - # (otherwise, the dlopen module name will be incorrect). We do - # this by putting the import library name into $newdlprefiles. - # We recover the dlopen module name by 'saving' the la file - # name in a special purpose variable, and (later) extracting the - # dlname from the la file. - if test -n "$dlname"; then - func_tr_sh "$dir/$linklib" - eval "libfile_$func_tr_sh_result=\$abs_ladir/\$laname" - func_append newdlprefiles " $dir/$linklib" - else - func_append newdlprefiles " $dir/$old_library" - # Keep a list of preopened convenience libraries to check - # that they are being used correctly in the link pass. - test -z "$libdir" && \ - func_append dlpreconveniencelibs " $dir/$old_library" - fi - ;; - * ) - # Prefer using a static library (so that no silly _DYNAMIC symbols - # are required to link). - if test -n "$old_library"; then - func_append newdlprefiles " $dir/$old_library" - # Keep a list of preopened convenience libraries to check - # that they are being used correctly in the link pass. - test -z "$libdir" && \ - func_append dlpreconveniencelibs " $dir/$old_library" - # Otherwise, use the dlname, so that lt_dlopen finds it. - elif test -n "$dlname"; then - func_append newdlprefiles " $dir/$dlname" - else - func_append newdlprefiles " $dir/$linklib" - fi - ;; - esac - fi # $pass = dlpreopen - - if test -z "$libdir"; then - # Link the convenience library - if test "$linkmode" = lib; then - deplibs="$dir/$old_library $deplibs" - elif test "$linkmode,$pass" = "prog,link"; then - compile_deplibs="$dir/$old_library $compile_deplibs" - finalize_deplibs="$dir/$old_library $finalize_deplibs" - else - deplibs="$lib $deplibs" # used for prog,scan pass - fi - continue - fi - - - if test "$linkmode" = prog && test "$pass" != link; then - func_append newlib_search_path " $ladir" - deplibs="$lib $deplibs" - - linkalldeplibs=no - if test "$link_all_deplibs" != no || test -z "$library_names" || - test "$build_libtool_libs" = no; then - linkalldeplibs=yes - fi - - tmp_libs= - for deplib in $dependency_libs; do - case $deplib in - -L*) func_stripname '-L' '' "$deplib" - func_resolve_sysroot "$func_stripname_result" - func_append newlib_search_path " $func_resolve_sysroot_result" - ;; - esac - # Need to link against all dependency_libs? - if test "$linkalldeplibs" = yes; then - deplibs="$deplib $deplibs" - else - # Need to hardcode shared library paths - # or/and link against static libraries - newdependency_libs="$deplib $newdependency_libs" - fi - if $opt_preserve_dup_deps ; then - case "$tmp_libs " in - *" $deplib "*) func_append specialdeplibs " $deplib" ;; - esac - fi - func_append tmp_libs " $deplib" - done # for deplib - continue - fi # $linkmode = prog... - - if test "$linkmode,$pass" = "prog,link"; then - if test -n "$library_names" && - { { test "$prefer_static_libs" = no || - test "$prefer_static_libs,$installed" = "built,yes"; } || - test -z "$old_library"; }; then - # We need to hardcode the library path - if test -n "$shlibpath_var" && test -z "$avoidtemprpath" ; then - # Make sure the rpath contains only unique directories. - case "$temp_rpath:" in - *"$absdir:"*) ;; - *) func_append temp_rpath "$absdir:" ;; - esac - fi - - # Hardcode the library path. - # Skip directories that are in the system default run-time - # search path. - case " $sys_lib_dlsearch_path " in - *" $absdir "*) ;; - *) - case "$compile_rpath " in - *" $absdir "*) ;; - *) func_append compile_rpath " $absdir" ;; - esac - ;; - esac - case " $sys_lib_dlsearch_path " in - *" $libdir "*) ;; - *) - case "$finalize_rpath " in - *" $libdir "*) ;; - *) func_append finalize_rpath " $libdir" ;; - esac - ;; - esac - fi # $linkmode,$pass = prog,link... - - if test "$alldeplibs" = yes && - { test "$deplibs_check_method" = pass_all || - { test "$build_libtool_libs" = yes && - test -n "$library_names"; }; }; then - # We only need to search for static libraries - continue - fi - fi - - link_static=no # Whether the deplib will be linked statically - use_static_libs=$prefer_static_libs - if test "$use_static_libs" = built && test "$installed" = yes; then - use_static_libs=no - fi - if test -n "$library_names" && - { test "$use_static_libs" = no || test -z "$old_library"; }; then - case $host in - *cygwin* | *mingw* | *cegcc*) - # No point in relinking DLLs because paths are not encoded - func_append notinst_deplibs " $lib" - need_relink=no - ;; - *) - if test "$installed" = no; then - func_append notinst_deplibs " $lib" - need_relink=yes - fi - ;; - esac - # This is a shared library - - # Warn about portability, can't link against -module's on some - # systems (darwin). Don't bleat about dlopened modules though! - dlopenmodule="" - for dlpremoduletest in $dlprefiles; do - if test "X$dlpremoduletest" = "X$lib"; then - dlopenmodule="$dlpremoduletest" - break - fi - done - if test -z "$dlopenmodule" && test "$shouldnotlink" = yes && test "$pass" = link; then - echo - if test "$linkmode" = prog; then - $ECHO "*** Warning: Linking the executable $output against the loadable module" - else - $ECHO "*** Warning: Linking the shared library $output against the loadable module" - fi - $ECHO "*** $linklib is not portable!" - fi - if test "$linkmode" = lib && - test "$hardcode_into_libs" = yes; then - # Hardcode the library path. - # Skip directories that are in the system default run-time - # search path. - case " $sys_lib_dlsearch_path " in - *" $absdir "*) ;; - *) - case "$compile_rpath " in - *" $absdir "*) ;; - *) func_append compile_rpath " $absdir" ;; - esac - ;; - esac - case " $sys_lib_dlsearch_path " in - *" $libdir "*) ;; - *) - case "$finalize_rpath " in - *" $libdir "*) ;; - *) func_append finalize_rpath " $libdir" ;; - esac - ;; - esac - fi - - if test -n "$old_archive_from_expsyms_cmds"; then - # figure out the soname - set dummy $library_names - shift - realname="$1" - shift - libname=`eval "\\$ECHO \"$libname_spec\""` - # use dlname if we got it. it's perfectly good, no? - if test -n "$dlname"; then - soname="$dlname" - elif test -n "$soname_spec"; then - # bleh windows - case $host in - *cygwin* | mingw* | *cegcc*) - func_arith $current - $age - major=$func_arith_result - versuffix="-$major" - ;; - esac - eval soname=\"$soname_spec\" - else - soname="$realname" - fi - - # Make a new name for the extract_expsyms_cmds to use - soroot="$soname" - func_basename "$soroot" - soname="$func_basename_result" - func_stripname 'lib' '.dll' "$soname" - newlib=libimp-$func_stripname_result.a - - # If the library has no export list, then create one now - if test -f "$output_objdir/$soname-def"; then : - else - func_verbose "extracting exported symbol list from \`$soname'" - func_execute_cmds "$extract_expsyms_cmds" 'exit $?' - fi - - # Create $newlib - if test -f "$output_objdir/$newlib"; then :; else - func_verbose "generating import library for \`$soname'" - func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?' - fi - # make sure the library variables are pointing to the new library - dir=$output_objdir - linklib=$newlib - fi # test -n "$old_archive_from_expsyms_cmds" - - if test "$linkmode" = prog || test "$opt_mode" != relink; then - add_shlibpath= - add_dir= - add= - lib_linked=yes - case $hardcode_action in - immediate | unsupported) - if test "$hardcode_direct" = no; then - add="$dir/$linklib" - case $host in - *-*-sco3.2v5.0.[024]*) add_dir="-L$dir" ;; - *-*-sysv4*uw2*) add_dir="-L$dir" ;; - *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \ - *-*-unixware7*) add_dir="-L$dir" ;; - *-*-darwin* ) - # if the lib is a (non-dlopened) module then we can not - # link against it, someone is ignoring the earlier warnings - if /usr/bin/file -L $add 2> /dev/null | - $GREP ": [^:]* bundle" >/dev/null ; then - if test "X$dlopenmodule" != "X$lib"; then - $ECHO "*** Warning: lib $linklib is a module, not a shared library" - if test -z "$old_library" ; then - echo - echo "*** And there doesn't seem to be a static archive available" - echo "*** The link will probably fail, sorry" - else - add="$dir/$old_library" - fi - elif test -n "$old_library"; then - add="$dir/$old_library" - fi - fi - esac - elif test "$hardcode_minus_L" = no; then - case $host in - *-*-sunos*) add_shlibpath="$dir" ;; - esac - add_dir="-L$dir" - add="-l$name" - elif test "$hardcode_shlibpath_var" = no; then - add_shlibpath="$dir" - add="-l$name" - else - lib_linked=no - fi - ;; - relink) - if test "$hardcode_direct" = yes && - test "$hardcode_direct_absolute" = no; then - add="$dir/$linklib" - elif test "$hardcode_minus_L" = yes; then - add_dir="-L$absdir" - # Try looking first in the location we're being installed to. - if test -n "$inst_prefix_dir"; then - case $libdir in - [\\/]*) - func_append add_dir " -L$inst_prefix_dir$libdir" - ;; - esac - fi - add="-l$name" - elif test "$hardcode_shlibpath_var" = yes; then - add_shlibpath="$dir" - add="-l$name" - else - lib_linked=no - fi - ;; - *) lib_linked=no ;; - esac - - if test "$lib_linked" != yes; then - func_fatal_configuration "unsupported hardcode properties" - fi - - if test -n "$add_shlibpath"; then - case :$compile_shlibpath: in - *":$add_shlibpath:"*) ;; - *) func_append compile_shlibpath "$add_shlibpath:" ;; - esac - fi - if test "$linkmode" = prog; then - test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs" - test -n "$add" && compile_deplibs="$add $compile_deplibs" - else - test -n "$add_dir" && deplibs="$add_dir $deplibs" - test -n "$add" && deplibs="$add $deplibs" - if test "$hardcode_direct" != yes && - test "$hardcode_minus_L" != yes && - test "$hardcode_shlibpath_var" = yes; then - case :$finalize_shlibpath: in - *":$libdir:"*) ;; - *) func_append finalize_shlibpath "$libdir:" ;; - esac - fi - fi - fi - - if test "$linkmode" = prog || test "$opt_mode" = relink; then - add_shlibpath= - add_dir= - add= - # Finalize command for both is simple: just hardcode it. - if test "$hardcode_direct" = yes && - test "$hardcode_direct_absolute" = no; then - add="$libdir/$linklib" - elif test "$hardcode_minus_L" = yes; then - add_dir="-L$libdir" - add="-l$name" - elif test "$hardcode_shlibpath_var" = yes; then - case :$finalize_shlibpath: in - *":$libdir:"*) ;; - *) func_append finalize_shlibpath "$libdir:" ;; - esac - add="-l$name" - elif test "$hardcode_automatic" = yes; then - if test -n "$inst_prefix_dir" && - test -f "$inst_prefix_dir$libdir/$linklib" ; then - add="$inst_prefix_dir$libdir/$linklib" - else - add="$libdir/$linklib" - fi - else - # We cannot seem to hardcode it, guess we'll fake it. - add_dir="-L$libdir" - # Try looking first in the location we're being installed to. - if test -n "$inst_prefix_dir"; then - case $libdir in - [\\/]*) - func_append add_dir " -L$inst_prefix_dir$libdir" - ;; - esac - fi - add="-l$name" - fi - - if test "$linkmode" = prog; then - test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs" - test -n "$add" && finalize_deplibs="$add $finalize_deplibs" - else - test -n "$add_dir" && deplibs="$add_dir $deplibs" - test -n "$add" && deplibs="$add $deplibs" - fi - fi - elif test "$linkmode" = prog; then - # Here we assume that one of hardcode_direct or hardcode_minus_L - # is not unsupported. This is valid on all known static and - # shared platforms. - if test "$hardcode_direct" != unsupported; then - test -n "$old_library" && linklib="$old_library" - compile_deplibs="$dir/$linklib $compile_deplibs" - finalize_deplibs="$dir/$linklib $finalize_deplibs" - else - compile_deplibs="-l$name -L$dir $compile_deplibs" - finalize_deplibs="-l$name -L$dir $finalize_deplibs" - fi - elif test "$build_libtool_libs" = yes; then - # Not a shared library - if test "$deplibs_check_method" != pass_all; then - # We're trying link a shared library against a static one - # but the system doesn't support it. - - # Just print a warning and add the library to dependency_libs so - # that the program can be linked against the static library. - echo - $ECHO "*** Warning: This system can not link to static lib archive $lib." - echo "*** I have the capability to make that library automatically link in when" - echo "*** you link to this library. But I can only do this if you have a" - echo "*** shared version of the library, which you do not appear to have." - if test "$module" = yes; then - echo "*** But as you try to build a module library, libtool will still create " - echo "*** a static module, that should work as long as the dlopening application" - echo "*** is linked with the -dlopen flag to resolve symbols at runtime." - if test -z "$global_symbol_pipe"; then - echo - echo "*** However, this would only work if libtool was able to extract symbol" - echo "*** lists from a program, using \`nm' or equivalent, but libtool could" - echo "*** not find such a program. So, this module is probably useless." - echo "*** \`nm' from GNU binutils and a full rebuild may help." - fi - if test "$build_old_libs" = no; then - build_libtool_libs=module - build_old_libs=yes - else - build_libtool_libs=no - fi - fi - else - deplibs="$dir/$old_library $deplibs" - link_static=yes - fi - fi # link shared/static library? - - if test "$linkmode" = lib; then - if test -n "$dependency_libs" && - { test "$hardcode_into_libs" != yes || - test "$build_old_libs" = yes || - test "$link_static" = yes; }; then - # Extract -R from dependency_libs - temp_deplibs= - for libdir in $dependency_libs; do - case $libdir in - -R*) func_stripname '-R' '' "$libdir" - temp_xrpath=$func_stripname_result - case " $xrpath " in - *" $temp_xrpath "*) ;; - *) func_append xrpath " $temp_xrpath";; - esac;; - *) func_append temp_deplibs " $libdir";; - esac - done - dependency_libs="$temp_deplibs" - fi - - func_append newlib_search_path " $absdir" - # Link against this library - test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs" - # ... and its dependency_libs - tmp_libs= - for deplib in $dependency_libs; do - newdependency_libs="$deplib $newdependency_libs" - case $deplib in - -L*) func_stripname '-L' '' "$deplib" - func_resolve_sysroot "$func_stripname_result";; - *) func_resolve_sysroot "$deplib" ;; - esac - if $opt_preserve_dup_deps ; then - case "$tmp_libs " in - *" $func_resolve_sysroot_result "*) - func_append specialdeplibs " $func_resolve_sysroot_result" ;; - esac - fi - func_append tmp_libs " $func_resolve_sysroot_result" - done - - if test "$link_all_deplibs" != no; then - # Add the search paths of all dependency libraries - for deplib in $dependency_libs; do - path= - case $deplib in - -L*) path="$deplib" ;; - *.la) - func_resolve_sysroot "$deplib" - deplib=$func_resolve_sysroot_result - func_dirname "$deplib" "" "." - dir=$func_dirname_result - # We need an absolute path. - case $dir in - [\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;; - *) - absdir=`cd "$dir" && pwd` - if test -z "$absdir"; then - func_warning "cannot determine absolute directory name of \`$dir'" - absdir="$dir" - fi - ;; - esac - if $GREP "^installed=no" $deplib > /dev/null; then - case $host in - *-*-darwin*) - depdepl= - eval deplibrary_names=`${SED} -n -e 's/^library_names=\(.*\)$/\1/p' $deplib` - if test -n "$deplibrary_names" ; then - for tmp in $deplibrary_names ; do - depdepl=$tmp - done - if test -f "$absdir/$objdir/$depdepl" ; then - depdepl="$absdir/$objdir/$depdepl" - darwin_install_name=`${OTOOL} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'` - if test -z "$darwin_install_name"; then - darwin_install_name=`${OTOOL64} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'` - fi - func_append compiler_flags " ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}" - func_append linker_flags " -dylib_file ${darwin_install_name}:${depdepl}" - path= - fi - fi - ;; - *) - path="-L$absdir/$objdir" - ;; - esac - else - eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib` - test -z "$libdir" && \ - func_fatal_error "\`$deplib' is not a valid libtool archive" - test "$absdir" != "$libdir" && \ - func_warning "\`$deplib' seems to be moved" - - path="-L$absdir" - fi - ;; - esac - case " $deplibs " in - *" $path "*) ;; - *) deplibs="$path $deplibs" ;; - esac - done - fi # link_all_deplibs != no - fi # linkmode = lib - done # for deplib in $libs - if test "$pass" = link; then - if test "$linkmode" = "prog"; then - compile_deplibs="$new_inherited_linker_flags $compile_deplibs" - finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs" - else - compiler_flags="$compiler_flags "`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` - fi - fi - dependency_libs="$newdependency_libs" - if test "$pass" = dlpreopen; then - # Link the dlpreopened libraries before other libraries - for deplib in $save_deplibs; do - deplibs="$deplib $deplibs" - done - fi - if test "$pass" != dlopen; then - if test "$pass" != conv; then - # Make sure lib_search_path contains only unique directories. - lib_search_path= - for dir in $newlib_search_path; do - case "$lib_search_path " in - *" $dir "*) ;; - *) func_append lib_search_path " $dir" ;; - esac - done - newlib_search_path= - fi - - if test "$linkmode,$pass" != "prog,link"; then - vars="deplibs" - else - vars="compile_deplibs finalize_deplibs" - fi - for var in $vars dependency_libs; do - # Add libraries to $var in reverse order - eval tmp_libs=\"\$$var\" - new_libs= - for deplib in $tmp_libs; do - # FIXME: Pedantically, this is the right thing to do, so - # that some nasty dependency loop isn't accidentally - # broken: - #new_libs="$deplib $new_libs" - # Pragmatically, this seems to cause very few problems in - # practice: - case $deplib in - -L*) new_libs="$deplib $new_libs" ;; - -R*) ;; - *) - # And here is the reason: when a library appears more - # than once as an explicit dependence of a library, or - # is implicitly linked in more than once by the - # compiler, it is considered special, and multiple - # occurrences thereof are not removed. Compare this - # with having the same library being listed as a - # dependency of multiple other libraries: in this case, - # we know (pedantically, we assume) the library does not - # need to be listed more than once, so we keep only the - # last copy. 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- - freebsd-aout) - major=".$current" - versuffix=".$current.$revision"; - ;; - - freebsd-elf) - major=".$current" - versuffix=".$current" - ;; - - irix | nonstopux) - if test "X$lt_irix_increment" = "Xno"; then - func_arith $current - $age - else - func_arith $current - $age + 1 - fi - major=$func_arith_result - - case $version_type in - nonstopux) verstring_prefix=nonstopux ;; - *) verstring_prefix=sgi ;; - esac - verstring="$verstring_prefix$major.$revision" - - # Add in all the interfaces that we are compatible with. - loop=$revision - while test "$loop" -ne 0; do - func_arith $revision - $loop - iface=$func_arith_result - func_arith $loop - 1 - loop=$func_arith_result - verstring="$verstring_prefix$major.$iface:$verstring" - done - - # Before this point, $major must not contain `.'. - major=.$major - versuffix="$major.$revision" - ;; - - linux) # correct to gnu/linux during the next big refactor - func_arith $current - $age - major=.$func_arith_result - versuffix="$major.$age.$revision" - ;; 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then - major= - case $version_type in - darwin) - # we can't check for "0.0" in archive_cmds due to quoting - # problems, so we reset it completely - verstring= - ;; - *) - verstring="0.0" - ;; - esac - if test "$need_version" = no; then - versuffix= - else - versuffix=".0.0" - fi - fi - - # Remove version info from name if versioning should be avoided - if test "$avoid_version" = yes && test "$need_version" = no; then - major= - versuffix= - verstring="" - fi - - # Check to see if the archive will have undefined symbols. - if test "$allow_undefined" = yes; then - if test "$allow_undefined_flag" = unsupported; then - func_warning "undefined symbols not allowed in $host shared libraries" - build_libtool_libs=no - build_old_libs=yes - fi - else - # Don't allow undefined symbols. - allow_undefined_flag="$no_undefined_flag" - fi - - fi - - func_generate_dlsyms "$libname" "$libname" "yes" - func_append libobjs " $symfileobj" - test "X$libobjs" = "X " && libobjs= - - if test "$opt_mode" != relink; then - # Remove our outputs, but don't remove object files since they - # may have been created when compiling PIC objects. - removelist= - tempremovelist=`$ECHO "$output_objdir/*"` - for p in $tempremovelist; do - case $p in - *.$objext | *.gcno) - ;; - $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/${libname}${release}.*) - if test "X$precious_files_regex" != "X"; then - if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1 - then - continue - fi - fi - func_append removelist " $p" - ;; - *) ;; - esac - done - test -n "$removelist" && \ - func_show_eval "${RM}r \$removelist" - fi - - # Now set the variables for building old libraries. - if test "$build_old_libs" = yes && test "$build_libtool_libs" != convenience ; then - func_append oldlibs " $output_objdir/$libname.$libext" - - # Transform .lo files to .o files. - oldobjs="$objs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; $lo2o" | $NL2SP` - fi - - # Eliminate all temporary directories. - #for path in $notinst_path; do - # lib_search_path=`$ECHO "$lib_search_path " | $SED "s% $path % %g"` - # deplibs=`$ECHO "$deplibs " | $SED "s% -L$path % %g"` - # dependency_libs=`$ECHO "$dependency_libs " | $SED "s% -L$path % %g"` - #done - - if test -n "$xrpath"; then - # If the user specified any rpath flags, then add them. - temp_xrpath= - for libdir in $xrpath; do - func_replace_sysroot "$libdir" - func_append temp_xrpath " -R$func_replace_sysroot_result" - case "$finalize_rpath " in - *" $libdir "*) ;; - *) func_append finalize_rpath " $libdir" ;; - esac - done - if test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes; then - dependency_libs="$temp_xrpath $dependency_libs" - fi - fi - - # Make sure dlfiles contains only unique files that won't be dlpreopened - old_dlfiles="$dlfiles" - dlfiles= - for lib in $old_dlfiles; do - case " $dlprefiles $dlfiles " in - *" $lib "*) ;; - *) func_append dlfiles " $lib" ;; - esac - done - - # Make sure dlprefiles contains only unique files - old_dlprefiles="$dlprefiles" - dlprefiles= - for lib in $old_dlprefiles; 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So, this module is probably useless." - echo "*** \`nm' from GNU binutils and a full rebuild may help." - fi - if test "$build_old_libs" = no; then - oldlibs="$output_objdir/$libname.$libext" - build_libtool_libs=module - build_old_libs=yes - else - build_libtool_libs=no - fi - else - echo "*** The inter-library dependencies that have been dropped here will be" - echo "*** automatically added whenever a program is linked with this library" - echo "*** or is declared to -dlopen it." - - if test "$allow_undefined" = no; then - echo - echo "*** Since this library must not contain undefined symbols," - echo "*** because either the platform does not support them or" - echo "*** it was explicitly requested with -no-undefined," - echo "*** libtool will only create a static version of it." - if test "$build_old_libs" = no; then - oldlibs="$output_objdir/$libname.$libext" - build_libtool_libs=module - build_old_libs=yes - else - build_libtool_libs=no - fi - fi - fi - fi - # Done checking deplibs! - deplibs=$newdeplibs - fi - # Time to change all our "foo.ltframework" stuff back to "-framework foo" - case $host in - *-*-darwin*) - newdeplibs=`$ECHO " $newdeplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` - new_inherited_linker_flags=`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` - deplibs=`$ECHO " $deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` - ;; - esac - - # move library search paths that coincide with paths to not yet - # installed libraries to the beginning of the library search list - new_libs= - for path in $notinst_path; do - case " $new_libs " in - *" -L$path/$objdir "*) ;; - *) - case " $deplibs " in - *" -L$path/$objdir "*) - func_append new_libs " -L$path/$objdir" ;; - esac - ;; - esac - done - for deplib in $deplibs; do - case $deplib in - -L*) - case " $new_libs " in - *" $deplib "*) ;; - *) func_append new_libs " $deplib" ;; - esac - ;; - *) func_append new_libs " $deplib" ;; - esac - done - deplibs="$new_libs" - - # All the library-specific variables (install_libdir is set above). - library_names= - old_library= - dlname= - - # Test again, we may have decided not to build it any more - if test "$build_libtool_libs" = yes; then - # Remove ${wl} instances when linking with ld. - # FIXME: should test the right _cmds variable. - case $archive_cmds in - *\$LD\ *) wl= ;; - esac - if test "$hardcode_into_libs" = yes; then - # Hardcode the library paths - hardcode_libdirs= - dep_rpath= - rpath="$finalize_rpath" - test "$opt_mode" != relink && rpath="$compile_rpath$rpath" - for libdir in $rpath; do - if test -n "$hardcode_libdir_flag_spec"; then - if test -n "$hardcode_libdir_separator"; then - func_replace_sysroot "$libdir" - libdir=$func_replace_sysroot_result - if test -z "$hardcode_libdirs"; then - hardcode_libdirs="$libdir" - else - # Just accumulate the unique libdirs. - case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in - *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) - ;; - *) - func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" - ;; - esac - fi - else - eval flag=\"$hardcode_libdir_flag_spec\" - func_append dep_rpath " $flag" - fi - elif test -n "$runpath_var"; then - case "$perm_rpath " in - *" $libdir "*) ;; - *) func_append perm_rpath " $libdir" ;; - esac - fi - done - # Substitute the hardcoded libdirs into the rpath. - if test -n "$hardcode_libdir_separator" && - test -n "$hardcode_libdirs"; then - libdir="$hardcode_libdirs" - eval "dep_rpath=\"$hardcode_libdir_flag_spec\"" - fi - if test -n "$runpath_var" && test -n "$perm_rpath"; then - # We should set the runpath_var. - rpath= - for dir in $perm_rpath; do - func_append rpath "$dir:" - done - eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var" - fi - test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs" - fi - - shlibpath="$finalize_shlibpath" - test "$opt_mode" != relink && shlibpath="$compile_shlibpath$shlibpath" - if test -n "$shlibpath"; then - eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var" - fi - - # Get the real and link names of the library. - eval shared_ext=\"$shrext_cmds\" - eval library_names=\"$library_names_spec\" - set dummy $library_names - shift - realname="$1" - shift - - if test -n "$soname_spec"; then - eval soname=\"$soname_spec\" - else - soname="$realname" - fi - if test -z "$dlname"; then - dlname=$soname - fi - - lib="$output_objdir/$realname" - linknames= - for link - do - func_append linknames " $link" - done - - # Use standard objects if they are pic - test -z "$pic_flag" && libobjs=`$ECHO "$libobjs" | $SP2NL | $SED "$lo2o" | $NL2SP` - test "X$libobjs" = "X " && libobjs= - - delfiles= - if test -n "$export_symbols" && test -n "$include_expsyms"; then - $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp" - export_symbols="$output_objdir/$libname.uexp" - func_append delfiles " $export_symbols" - fi - - orig_export_symbols= - case $host_os in - cygwin* | mingw* | cegcc*) - if test -n "$export_symbols" && test -z "$export_symbols_regex"; then - # exporting using user supplied symfile - if test "x`$SED 1q $export_symbols`" != xEXPORTS; then - # and it's NOT already a .def file. 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If we have whole_archive_flag_spec, we - # want to use save_libobjs as it was before - # whole_archive_flag_spec was expanded, because we can't - # assume the linker understands whole_archive_flag_spec. - # This may have to be revisited, in case too many - # convenience libraries get linked in and end up exceeding - # the spec. - if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then - save_libobjs=$libobjs - fi - save_output=$output - func_basename "$output" - output_la=$func_basename_result - - # Clear the reloadable object creation command queue and - # initialize k to one. - test_cmds= - concat_cmds= - objlist= - last_robj= - k=1 - - if test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "$with_gnu_ld" = yes; then - output=${output_objdir}/${output_la}.lnkscript - func_verbose "creating GNU ld script: $output" - echo 'INPUT (' > $output - for obj in $save_libobjs - do - func_to_tool_file "$obj" - $ECHO "$func_to_tool_file_result" >> $output - done - echo ')' >> $output - func_append delfiles " $output" - func_to_tool_file "$output" - output=$func_to_tool_file_result - elif test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "X$file_list_spec" != X; then - output=${output_objdir}/${output_la}.lnk - func_verbose "creating linker input file list: $output" - : > $output - set x $save_libobjs - shift - firstobj= - if test "$compiler_needs_object" = yes; then - firstobj="$1 " - shift - fi - for obj - do - func_to_tool_file "$obj" - $ECHO "$func_to_tool_file_result" >> $output - done - func_append delfiles " $output" - func_to_tool_file "$output" - output=$firstobj\"$file_list_spec$func_to_tool_file_result\" - else - if test -n "$save_libobjs"; then - func_verbose "creating reloadable object files..." - output=$output_objdir/$output_la-${k}.$objext - eval test_cmds=\"$reload_cmds\" - func_len " $test_cmds" - len0=$func_len_result - len=$len0 - - # Loop over the list of objects to be linked. - for obj in $save_libobjs - do - func_len " $obj" - func_arith $len + $func_len_result - len=$func_arith_result - if test "X$objlist" = X || - test "$len" -lt "$max_cmd_len"; then - func_append objlist " $obj" - else - # The command $test_cmds is almost too long, add a - # command to the queue. - if test "$k" -eq 1 ; then - # The first file doesn't have a previous command to add. - reload_objs=$objlist - eval concat_cmds=\"$reload_cmds\" - else - # All subsequent reloadable object files will link in - # the last one created. - reload_objs="$objlist $last_robj" - eval concat_cmds=\"\$concat_cmds~$reload_cmds~\$RM $last_robj\" - fi - last_robj=$output_objdir/$output_la-${k}.$objext - func_arith $k + 1 - k=$func_arith_result - output=$output_objdir/$output_la-${k}.$objext - objlist=" $obj" - func_len " $last_robj" - func_arith $len0 + $func_len_result - len=$func_arith_result - fi - done - # Handle the remaining objects by creating one last - # reloadable object file. All subsequent reloadable object - # files will link in the last one created. - test -z "$concat_cmds" || concat_cmds=$concat_cmds~ - reload_objs="$objlist $last_robj" - eval concat_cmds=\"\${concat_cmds}$reload_cmds\" - if test -n "$last_robj"; then - eval concat_cmds=\"\${concat_cmds}~\$RM $last_robj\" - fi - func_append delfiles " $output" - - else - output= - fi - - if ${skipped_export-false}; then - func_verbose "generating symbol list for \`$libname.la'" - export_symbols="$output_objdir/$libname.exp" - $opt_dry_run || $RM $export_symbols - libobjs=$output - # Append the command to create the export file. - test -z "$concat_cmds" || concat_cmds=$concat_cmds~ - eval concat_cmds=\"\$concat_cmds$export_symbols_cmds\" - if test -n "$last_robj"; then - eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\" - fi - fi - - test -n "$save_libobjs" && - func_verbose "creating a temporary reloadable object file: $output" - - # Loop through the commands generated above and execute them. - save_ifs="$IFS"; IFS='~' - for cmd in $concat_cmds; do - IFS="$save_ifs" - $opt_silent || { - func_quote_for_expand "$cmd" - eval "func_echo $func_quote_for_expand_result" - } - $opt_dry_run || eval "$cmd" || { - lt_exit=$? - - # Restore the uninstalled library and exit - if test "$opt_mode" = relink; then - ( cd "$output_objdir" && \ - $RM "${realname}T" && \ - $MV "${realname}U" "$realname" ) - fi - - exit $lt_exit - } - done - IFS="$save_ifs" - - if test -n "$export_symbols_regex" && ${skipped_export-false}; then - func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"' - func_show_eval '$MV "${export_symbols}T" "$export_symbols"' - fi - fi - - if ${skipped_export-false}; then - if test -n "$export_symbols" && test -n "$include_expsyms"; then - tmp_export_symbols="$export_symbols" - test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols" - $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"' - fi - - if test -n "$orig_export_symbols"; then - # The given exports_symbols file has to be filtered, so filter it. - func_verbose "filter symbol list for \`$libname.la' to tag DATA exports" - # FIXME: $output_objdir/$libname.filter potentially contains lots of - # 's' commands which not all seds can handle. GNU sed should be fine - # though. Also, the filter scales superlinearly with the number of - # global variables. join(1) would be nice here, but unfortunately - # isn't a blessed tool. - $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter - func_append delfiles " $export_symbols $output_objdir/$libname.filter" - export_symbols=$output_objdir/$libname.def - $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols - fi - fi - - libobjs=$output - # Restore the value of output. - output=$save_output - - if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then - eval libobjs=\"\$libobjs $whole_archive_flag_spec\" - test "X$libobjs" = "X " && libobjs= - fi - # Expand the library linking commands again to reset the - # value of $libobjs for piecewise linking. - - # Do each of the archive commands. - if test "$module" = yes && test -n "$module_cmds" ; then - if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then - cmds=$module_expsym_cmds - else - cmds=$module_cmds - fi - else - if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then - cmds=$archive_expsym_cmds - else - cmds=$archive_cmds - fi - fi - fi - - if test -n "$delfiles"; then - # Append the command to remove temporary files to $cmds. - eval cmds=\"\$cmds~\$RM $delfiles\" - fi - - # Add any objects from preloaded convenience libraries - if test -n "$dlprefiles"; then - gentop="$output_objdir/${outputname}x" - func_append generated " $gentop" - - func_extract_archives $gentop $dlprefiles - func_append libobjs " $func_extract_archives_result" - test "X$libobjs" = "X " && libobjs= - fi - - save_ifs="$IFS"; IFS='~' - for cmd in $cmds; do - IFS="$save_ifs" - eval cmd=\"$cmd\" - $opt_silent || { - func_quote_for_expand "$cmd" - eval "func_echo $func_quote_for_expand_result" - } - $opt_dry_run || eval "$cmd" || { - lt_exit=$? - - # Restore the uninstalled library and exit - if test "$opt_mode" = relink; then - ( cd "$output_objdir" && \ - $RM "${realname}T" && \ - $MV "${realname}U" "$realname" ) - fi - - exit $lt_exit - } - done - IFS="$save_ifs" - - # Restore the uninstalled library and exit - if test "$opt_mode" = relink; then - $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $? - - if test -n "$convenience"; then - if test -z "$whole_archive_flag_spec"; then - func_show_eval '${RM}r "$gentop"' - fi - fi - - exit $EXIT_SUCCESS - fi - - # Create links to the real library. - for linkname in $linknames; do - if test "$realname" != "$linkname"; then - func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?' - fi - done - - # If -module or -export-dynamic was specified, set the dlname. - if test "$module" = yes || test "$export_dynamic" = yes; then - # On all known operating systems, these are identical. - dlname="$soname" - fi - fi - ;; - - obj) - if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then - func_warning "\`-dlopen' is ignored for objects" - fi - - case " $deplibs" in - *\ -l* | *\ -L*) - func_warning "\`-l' and \`-L' are ignored for objects" ;; - esac - - test -n "$rpath" && \ - func_warning "\`-rpath' is ignored for objects" - - test -n "$xrpath" && \ - func_warning "\`-R' is ignored for objects" - - test -n "$vinfo" && \ - func_warning "\`-version-info' is ignored for objects" - - test -n "$release" && \ - func_warning "\`-release' is ignored for objects" - - case $output in - *.lo) - test -n "$objs$old_deplibs" && \ - func_fatal_error "cannot build library object \`$output' from non-libtool objects" - - libobj=$output - func_lo2o "$libobj" - obj=$func_lo2o_result - ;; - *) - libobj= - obj="$output" - ;; - esac - - # Delete the old objects. - $opt_dry_run || $RM $obj $libobj - - # Objects from convenience libraries. This assumes - # single-version convenience libraries. Whenever we create - # different ones for PIC/non-PIC, this we'll have to duplicate - # the extraction. - reload_conv_objs= - gentop= - # reload_cmds runs $LD directly, so let us get rid of - # -Wl from whole_archive_flag_spec and hope we can get by with - # turning comma into space.. - wl= - - if test -n "$convenience"; then - if test -n "$whole_archive_flag_spec"; then - eval tmp_whole_archive_flags=\"$whole_archive_flag_spec\" - reload_conv_objs=$reload_objs\ `$ECHO "$tmp_whole_archive_flags" | $SED 's|,| |g'` - else - gentop="$output_objdir/${obj}x" - func_append generated " $gentop" - - func_extract_archives $gentop $convenience - reload_conv_objs="$reload_objs $func_extract_archives_result" - fi - fi - - # If we're not building shared, we need to use non_pic_objs - test "$build_libtool_libs" != yes && libobjs="$non_pic_objects" - - # Create the old-style object. - reload_objs="$objs$old_deplibs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; /\.lib$/d; $lo2o" | $NL2SP`" $reload_conv_objs" ### testsuite: skip nested quoting test - - output="$obj" - func_execute_cmds "$reload_cmds" 'exit $?' - - # Exit if we aren't doing a library object file. - if test -z "$libobj"; then - if test -n "$gentop"; then - func_show_eval '${RM}r "$gentop"' - fi - - exit $EXIT_SUCCESS - fi - - if test "$build_libtool_libs" != yes; then - if test -n "$gentop"; then - func_show_eval '${RM}r "$gentop"' - fi - - # Create an invalid libtool object if no PIC, so that we don't - # accidentally link it into a program. - # $show "echo timestamp > $libobj" - # $opt_dry_run || eval "echo timestamp > $libobj" || exit $? - exit $EXIT_SUCCESS - fi - - if test -n "$pic_flag" || test "$pic_mode" != default; then - # Only do commands if we really have different PIC objects. - reload_objs="$libobjs $reload_conv_objs" - output="$libobj" - func_execute_cmds "$reload_cmds" 'exit $?' - fi - - if test -n "$gentop"; then - func_show_eval '${RM}r "$gentop"' - fi - - exit $EXIT_SUCCESS - ;; - - prog) - case $host in - *cygwin*) func_stripname '' '.exe' "$output" - output=$func_stripname_result.exe;; - esac - test -n "$vinfo" && \ - func_warning "\`-version-info' is ignored for programs" - - test -n "$release" && \ - func_warning "\`-release' is ignored for programs" - - test "$preload" = yes \ - && test "$dlopen_support" = unknown \ - && test "$dlopen_self" = unknown \ - && test "$dlopen_self_static" = unknown && \ - func_warning "\`LT_INIT([dlopen])' not used. Assuming no dlopen support." - - case $host in - *-*-rhapsody* | *-*-darwin1.[012]) - # On Rhapsody replace the C library is the System framework - compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's/ -lc / System.ltframework /'` - finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's/ -lc / System.ltframework /'` - ;; - esac - - case $host in - *-*-darwin*) - # Don't allow lazy linking, it breaks C++ global constructors - # But is supposedly fixed on 10.4 or later (yay!). - if test "$tagname" = CXX ; then - case ${MACOSX_DEPLOYMENT_TARGET-10.0} in - 10.[0123]) - func_append compile_command " ${wl}-bind_at_load" - func_append finalize_command " ${wl}-bind_at_load" - ;; - esac - fi - # Time to change all our "foo.ltframework" stuff back to "-framework foo" - compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` - finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` - ;; - esac - - - # move library search paths that coincide with paths to not yet - # installed libraries to the beginning of the library search list - new_libs= - for path in $notinst_path; do - case " $new_libs " in - *" -L$path/$objdir "*) ;; - *) - case " $compile_deplibs " in - *" -L$path/$objdir "*) - func_append new_libs " -L$path/$objdir" ;; - esac - ;; - esac - done - for deplib in $compile_deplibs; do - case $deplib in - -L*) - case " $new_libs " in - *" $deplib "*) ;; - *) func_append new_libs " $deplib" ;; - esac - ;; - *) func_append new_libs " $deplib" ;; - esac - done - compile_deplibs="$new_libs" - - - func_append compile_command " $compile_deplibs" - func_append finalize_command " $finalize_deplibs" - - if test -n "$rpath$xrpath"; then - # If the user specified any rpath flags, then add them. - for libdir in $rpath $xrpath; do - # This is the magic to use -rpath. - case "$finalize_rpath " in - *" $libdir "*) ;; - *) func_append finalize_rpath " $libdir" ;; - esac - done - fi - - # Now hardcode the library paths - rpath= - hardcode_libdirs= - for libdir in $compile_rpath $finalize_rpath; do - if test -n "$hardcode_libdir_flag_spec"; then - if test -n "$hardcode_libdir_separator"; then - if test -z "$hardcode_libdirs"; then - hardcode_libdirs="$libdir" - else - # Just accumulate the unique libdirs. - case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in - *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) - ;; - *) - func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" - ;; - esac - fi - else - eval flag=\"$hardcode_libdir_flag_spec\" - func_append rpath " $flag" - fi - elif test -n "$runpath_var"; then - case "$perm_rpath " in - *" $libdir "*) ;; - *) func_append perm_rpath " $libdir" ;; - esac - fi - case $host in - *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) - testbindir=`${ECHO} "$libdir" | ${SED} -e 's*/lib$*/bin*'` - case :$dllsearchpath: in - *":$libdir:"*) ;; - ::) dllsearchpath=$libdir;; - *) func_append dllsearchpath ":$libdir";; - esac - case :$dllsearchpath: in - *":$testbindir:"*) ;; - ::) dllsearchpath=$testbindir;; - *) func_append dllsearchpath ":$testbindir";; - esac - ;; - esac - done - # Substitute the hardcoded libdirs into the rpath. - if test -n "$hardcode_libdir_separator" && - test -n "$hardcode_libdirs"; then - libdir="$hardcode_libdirs" - eval rpath=\" $hardcode_libdir_flag_spec\" - fi - compile_rpath="$rpath" - - rpath= - hardcode_libdirs= - for libdir in $finalize_rpath; do - if test -n "$hardcode_libdir_flag_spec"; then - if test -n "$hardcode_libdir_separator"; then - if test -z "$hardcode_libdirs"; then - hardcode_libdirs="$libdir" - else - # Just accumulate the unique libdirs. - case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in - *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) - ;; - *) - func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" - ;; - esac - fi - else - eval flag=\"$hardcode_libdir_flag_spec\" - func_append rpath " $flag" - fi - elif test -n "$runpath_var"; then - case "$finalize_perm_rpath " in - *" $libdir "*) ;; - *) func_append finalize_perm_rpath " $libdir" ;; - esac - fi - done - # Substitute the hardcoded libdirs into the rpath. - if test -n "$hardcode_libdir_separator" && - test -n "$hardcode_libdirs"; then - libdir="$hardcode_libdirs" - eval rpath=\" $hardcode_libdir_flag_spec\" - fi - finalize_rpath="$rpath" - - if test -n "$libobjs" && test "$build_old_libs" = yes; then - # Transform all the library objects into standard objects. - compile_command=`$ECHO "$compile_command" | $SP2NL | $SED "$lo2o" | $NL2SP` - finalize_command=`$ECHO "$finalize_command" | $SP2NL | $SED "$lo2o" | $NL2SP` - fi - - func_generate_dlsyms "$outputname" "@PROGRAM@" "no" - - # template prelinking step - if test -n "$prelink_cmds"; then - func_execute_cmds "$prelink_cmds" 'exit $?' - fi - - wrappers_required=yes - case $host in - *cegcc* | *mingw32ce*) - # Disable wrappers for cegcc and mingw32ce hosts, we are cross compiling anyway. - wrappers_required=no - ;; - *cygwin* | *mingw* ) - if test "$build_libtool_libs" != yes; then - wrappers_required=no - fi - ;; - *) - if test "$need_relink" = no || test "$build_libtool_libs" != yes; then - wrappers_required=no - fi - ;; - esac - if test "$wrappers_required" = no; then - # Replace the output file specification. - compile_command=`$ECHO "$compile_command" | $SED 's%@OUTPUT@%'"$output"'%g'` - link_command="$compile_command$compile_rpath" - - # We have no uninstalled library dependencies, so finalize right now. - exit_status=0 - func_show_eval "$link_command" 'exit_status=$?' - - if test -n "$postlink_cmds"; then - func_to_tool_file "$output" - postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` - func_execute_cmds "$postlink_cmds" 'exit $?' - fi - - # Delete the generated files. - if test -f "$output_objdir/${outputname}S.${objext}"; then - func_show_eval '$RM "$output_objdir/${outputname}S.${objext}"' - fi - - exit $exit_status - fi - - if test -n "$compile_shlibpath$finalize_shlibpath"; then - compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command" - fi - if test -n "$finalize_shlibpath"; then - finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command" - fi - - compile_var= - finalize_var= - if test -n "$runpath_var"; then - if test -n "$perm_rpath"; then - # We should set the runpath_var. - rpath= - for dir in $perm_rpath; do - func_append rpath "$dir:" - done - compile_var="$runpath_var=\"$rpath\$$runpath_var\" " - fi - if test -n "$finalize_perm_rpath"; then - # We should set the runpath_var. - rpath= - for dir in $finalize_perm_rpath; do - func_append rpath "$dir:" - done - finalize_var="$runpath_var=\"$rpath\$$runpath_var\" " - fi - fi - - if test "$no_install" = yes; then - # We don't need to create a wrapper script. - link_command="$compile_var$compile_command$compile_rpath" - # Replace the output file specification. - link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output"'%g'` - # Delete the old output file. - $opt_dry_run || $RM $output - # Link the executable and exit - func_show_eval "$link_command" 'exit $?' - - if test -n "$postlink_cmds"; then - func_to_tool_file "$output" - postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` - func_execute_cmds "$postlink_cmds" 'exit $?' - fi - - exit $EXIT_SUCCESS - fi - - if test "$hardcode_action" = relink; then - # Fast installation is not supported - link_command="$compile_var$compile_command$compile_rpath" - relink_command="$finalize_var$finalize_command$finalize_rpath" - - func_warning "this platform does not like uninstalled shared libraries" - func_warning "\`$output' will be relinked during installation" - else - if test "$fast_install" != no; then - link_command="$finalize_var$compile_command$finalize_rpath" - if test "$fast_install" = yes; then - relink_command=`$ECHO "$compile_var$compile_command$compile_rpath" | $SED 's%@OUTPUT@%\$progdir/\$file%g'` - else - # fast_install is set to needless - relink_command= - fi - else - link_command="$compile_var$compile_command$compile_rpath" - relink_command="$finalize_var$finalize_command$finalize_rpath" - fi - fi - - # Replace the output file specification. - link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'` - - # Delete the old output files. - $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname - - func_show_eval "$link_command" 'exit $?' - - if test -n "$postlink_cmds"; then - func_to_tool_file "$output_objdir/$outputname" - postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output_objdir/$outputname"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` - func_execute_cmds "$postlink_cmds" 'exit $?' - fi - - # Now create the wrapper script. - func_verbose "creating $output" - - # Quote the relink command for shipping. - if test -n "$relink_command"; then - # Preserve any variables that may affect compiler behavior - for var in $variables_saved_for_relink; do - if eval test -z \"\${$var+set}\"; then - relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command" - elif eval var_value=\$$var; test -z "$var_value"; then - relink_command="$var=; export $var; $relink_command" - else - func_quote_for_eval "$var_value" - relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command" - fi - done - relink_command="(cd `pwd`; $relink_command)" - relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"` - fi - - # Only actually do things if not in dry run mode. - $opt_dry_run || { - # win32 will think the script is a binary if it has - # a .exe suffix, so we strip it off here. - case $output in - *.exe) func_stripname '' '.exe' "$output" - output=$func_stripname_result ;; 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- for obj in $save_oldobjs - do - last_oldobj=$obj - done - eval test_cmds=\"$old_archive_cmds\" - func_len " $test_cmds" - len0=$func_len_result - len=$len0 - for obj in $save_oldobjs - do - func_len " $obj" - func_arith $len + $func_len_result - len=$func_arith_result - func_append objlist " $obj" - if test "$len" -lt "$max_cmd_len"; then - : - else - # the above command should be used before it gets too long - oldobjs=$objlist - if test "$obj" = "$last_oldobj" ; then - RANLIB=$save_RANLIB - fi - test -z "$concat_cmds" || concat_cmds=$concat_cmds~ - eval concat_cmds=\"\${concat_cmds}$old_archive_cmds\" - objlist= - len=$len0 - fi - done - RANLIB=$save_RANLIB - oldobjs=$objlist - if test "X$oldobjs" = "X" ; then - eval cmds=\"\$concat_cmds\" - else - eval cmds=\"\$concat_cmds~\$old_archive_cmds\" - fi - fi - fi - func_execute_cmds "$cmds" 'exit $?' - done - - test -n "$generated" && \ - func_show_eval "${RM}r$generated" - - # Now create the libtool archive. - case $output in - *.la) - old_library= - test "$build_old_libs" = yes && old_library="$libname.$libext" - func_verbose "creating $output" - - # Preserve any variables that may affect compiler behavior - for var in $variables_saved_for_relink; do - if eval test -z \"\${$var+set}\"; then - relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command" - elif eval var_value=\$$var; test -z "$var_value"; then - relink_command="$var=; export $var; $relink_command" - else - func_quote_for_eval "$var_value" - relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command" - fi - done - # Quote the link command for shipping. - relink_command="(cd `pwd`; $SHELL $progpath $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)" - relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"` - if test "$hardcode_automatic" = yes ; then - relink_command= - fi - - # Only create the output if not a dry run. - $opt_dry_run || { - for installed in no yes; do - if test "$installed" = yes; then - if test -z "$install_libdir"; then - break - fi - output="$output_objdir/$outputname"i - # Replace all uninstalled libtool libraries with the installed ones - newdependency_libs= - for deplib in $dependency_libs; do - case $deplib in - *.la) - func_basename "$deplib" - name="$func_basename_result" - func_resolve_sysroot "$deplib" - eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $func_resolve_sysroot_result` - test -z "$libdir" && \ - func_fatal_error "\`$deplib' is not a valid libtool archive" - func_append newdependency_libs " ${lt_sysroot:+=}$libdir/$name" - ;; - -L*) - func_stripname -L '' "$deplib" - func_replace_sysroot "$func_stripname_result" - func_append newdependency_libs " -L$func_replace_sysroot_result" - ;; - -R*) - func_stripname -R '' "$deplib" - func_replace_sysroot "$func_stripname_result" - func_append newdependency_libs " -R$func_replace_sysroot_result" - ;; - *) func_append newdependency_libs " $deplib" ;; - esac - done - dependency_libs="$newdependency_libs" - newdlfiles= - - for lib in $dlfiles; do - case $lib in - *.la) - func_basename "$lib" - name="$func_basename_result" - eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib` - test -z "$libdir" && \ - func_fatal_error "\`$lib' is not a valid libtool archive" - func_append newdlfiles " ${lt_sysroot:+=}$libdir/$name" - ;; - *) func_append newdlfiles " $lib" ;; - esac - done - dlfiles="$newdlfiles" - newdlprefiles= - for lib in $dlprefiles; do - case $lib in - *.la) - # Only pass preopened files to the pseudo-archive (for - # eventual linking with the app. that links it) if we - # didn't already link the preopened objects directly into - # the library: - func_basename "$lib" - name="$func_basename_result" - eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib` - test -z "$libdir" && \ - func_fatal_error "\`$lib' is not a valid libtool archive" - func_append newdlprefiles " ${lt_sysroot:+=}$libdir/$name" - ;; - esac - done - dlprefiles="$newdlprefiles" - else - newdlfiles= - for lib in $dlfiles; do - case $lib in - [\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;; - *) abs=`pwd`"/$lib" ;; - esac - func_append newdlfiles " $abs" - done - dlfiles="$newdlfiles" - newdlprefiles= - for lib in $dlprefiles; do - case $lib in - [\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;; - *) abs=`pwd`"/$lib" ;; - esac - func_append newdlprefiles " $abs" - done - dlprefiles="$newdlprefiles" - fi - $RM $output - # place dlname in correct position for cygwin - # In fact, it would be nice if we could use this code for all target - # systems that can't hard-code library paths into their executables - # and that have no shared library path variable independent of PATH, - # but it turns out we can't easily determine that from inspecting - # libtool variables, so we have to hard-code the OSs to which it - # applies here; at the moment, that means platforms that use the PE - # object format with DLL files. See the long comment at the top of - # tests/bindir.at for full details. - tdlname=$dlname - case $host,$output,$installed,$module,$dlname in - *cygwin*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll) - # If a -bindir argument was supplied, place the dll there. - if test "x$bindir" != x ; - then - func_relative_path "$install_libdir" "$bindir" - tdlname=$func_relative_path_result$dlname - else - # Otherwise fall back on heuristic. - tdlname=../bin/$dlname - fi - ;; - esac - $ECHO > $output "\ -# $outputname - a libtool library file -# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION -# -# Please DO NOT delete this file! -# It is necessary for linking the library. - -# The name that we can dlopen(3). -dlname='$tdlname' - -# Names of this library. -library_names='$library_names' - -# The name of the static archive. -old_library='$old_library' - -# Linker flags that can not go in dependency_libs. -inherited_linker_flags='$new_inherited_linker_flags' - -# Libraries that this one depends upon. -dependency_libs='$dependency_libs' - -# Names of additional weak libraries provided by this library -weak_library_names='$weak_libs' - -# Version information for $libname. -current=$current -age=$age -revision=$revision - -# Is this an already installed library? -installed=$installed - -# Should we warn about portability when linking against -modules? -shouldnotlink=$module - -# Files to dlopen/dlpreopen -dlopen='$dlfiles' -dlpreopen='$dlprefiles' - -# Directory that this library needs to be installed in: -libdir='$install_libdir'" - if test "$installed" = no && test "$need_relink" = yes; then - $ECHO >> $output "\ -relink_command=\"$relink_command\"" - fi - done - } - - # Do a symbolic link so that the libtool archive can be found in - # LD_LIBRARY_PATH before the program is installed. - func_show_eval '( cd "$output_objdir" && $RM "$outputname" && $LN_S "../$outputname" "$outputname" )' 'exit $?' - ;; - esac - exit $EXIT_SUCCESS -} - -{ test "$opt_mode" = link || test "$opt_mode" = relink; } && - func_mode_link ${1+"$@"} - - -# func_mode_uninstall arg... -func_mode_uninstall () -{ - $opt_debug - RM="$nonopt" - files= - rmforce= - exit_status=0 - - # This variable tells wrapper scripts just to set variables rather - # than running their programs. - libtool_install_magic="$magic" - - for arg - do - case $arg in - -f) func_append RM " $arg"; rmforce=yes ;; - -*) func_append RM " $arg" ;; - *) func_append files " $arg" ;; - esac - done - - test -z "$RM" && \ - func_fatal_help "you must specify an RM program" - - rmdirs= - - for file in $files; do - func_dirname "$file" "" "." - dir="$func_dirname_result" - if test "X$dir" = X.; then - odir="$objdir" - else - odir="$dir/$objdir" - fi - func_basename "$file" - name="$func_basename_result" - test "$opt_mode" = uninstall && odir="$dir" - - # Remember odir for removal later, being careful to avoid duplicates - if test "$opt_mode" = clean; then - case " $rmdirs " in - *" $odir "*) ;; - *) func_append rmdirs " $odir" ;; - esac - fi - - # Don't error if the file doesn't exist and rm -f was used. - if { test -L "$file"; } >/dev/null 2>&1 || - { test -h "$file"; } >/dev/null 2>&1 || - test -f "$file"; then - : - elif test -d "$file"; then - exit_status=1 - continue - elif test "$rmforce" = yes; then - continue - fi - - rmfiles="$file" - - case $name in - *.la) - # Possibly a libtool archive, so verify it. - if func_lalib_p "$file"; then - func_source $dir/$name - - # Delete the libtool libraries and symlinks. - for n in $library_names; do - func_append rmfiles " $odir/$n" - done - test -n "$old_library" && func_append rmfiles " $odir/$old_library" - - case "$opt_mode" in - clean) - case " $library_names " in - *" $dlname "*) ;; - *) test -n "$dlname" && func_append rmfiles " $odir/$dlname" ;; - esac - test -n "$libdir" && func_append rmfiles " $odir/$name $odir/${name}i" - ;; - uninstall) - if test -n "$library_names"; then - # Do each command in the postuninstall commands. - func_execute_cmds "$postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1' - fi - - if test -n "$old_library"; then - # Do each command in the old_postuninstall commands. - func_execute_cmds "$old_postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1' - fi - # FIXME: should reinstall the best remaining shared library. - ;; - esac - fi - ;; - - *.lo) - # Possibly a libtool object, so verify it. - if func_lalib_p "$file"; then - - # Read the .lo file - func_source $dir/$name - - # Add PIC object to the list of files to remove. - if test -n "$pic_object" && - test "$pic_object" != none; then - func_append rmfiles " $dir/$pic_object" - fi - - # Add non-PIC object to the list of files to remove. - if test -n "$non_pic_object" && - test "$non_pic_object" != none; then - func_append rmfiles " $dir/$non_pic_object" - fi - fi - ;; - - *) - if test "$opt_mode" = clean ; then - noexename=$name - case $file in - *.exe) - func_stripname '' '.exe' "$file" - file=$func_stripname_result - func_stripname '' '.exe' "$name" - noexename=$func_stripname_result - # $file with .exe has already been added to rmfiles, - # add $file without .exe - func_append rmfiles " $file" - ;; - esac - # Do a test to see if this is a libtool program. - if func_ltwrapper_p "$file"; then - if func_ltwrapper_executable_p "$file"; then - func_ltwrapper_scriptname "$file" - relink_command= - func_source $func_ltwrapper_scriptname_result - func_append rmfiles " $func_ltwrapper_scriptname_result" - else - relink_command= - func_source $dir/$noexename - fi - - # note $name still contains .exe if it was in $file originally - # as does the version of $file that was added into $rmfiles - func_append rmfiles " $odir/$name $odir/${name}S.${objext}" - if test "$fast_install" = yes && test -n "$relink_command"; then - func_append rmfiles " $odir/lt-$name" - fi - if test "X$noexename" != "X$name" ; then - func_append rmfiles " $odir/lt-${noexename}.c" - fi - fi - fi - ;; - esac - func_show_eval "$RM $rmfiles" 'exit_status=1' - done - - # Try to remove the ${objdir}s in the directories where we deleted files - for dir in $rmdirs; do - if test -d "$dir"; then - func_show_eval "rmdir $dir >/dev/null 2>&1" - fi - done - - exit $exit_status -} - -{ test "$opt_mode" = uninstall || test "$opt_mode" = clean; } && - func_mode_uninstall ${1+"$@"} - -test -z "$opt_mode" && { - help="$generic_help" - func_fatal_help "you must specify a MODE" -} - -test -z "$exec_cmd" && \ - func_fatal_help "invalid operation mode \`$opt_mode'" - -if test -n "$exec_cmd"; then - eval exec "$exec_cmd" - exit $EXIT_FAILURE -fi - -exit $exit_status - - -# The TAGs below are defined such that we never get into a situation -# in which we disable both kinds of libraries. Given conflicting -# choices, we go for a static library, that is the most portable, -# since we can't tell whether shared libraries were disabled because -# the user asked for that or because the platform doesn't support -# them. This is particularly important on AIX, because we don't -# support having both static and shared libraries enabled at the same -# time on that platform, so we default to a shared-only configuration. -# If a disable-shared tag is given, we'll fallback to a static-only -# configuration. But we'll never go from static-only to shared-only. - -# ### BEGIN LIBTOOL TAG CONFIG: disable-shared -build_libtool_libs=no -build_old_libs=yes -# ### END LIBTOOL TAG CONFIG: disable-shared - -# ### BEGIN LIBTOOL TAG CONFIG: disable-static -build_old_libs=`case $build_libtool_libs in yes) echo no;; *) echo yes;; esac` -# ### END LIBTOOL TAG CONFIG: disable-static - -# Local Variables: -# mode:shell-script -# sh-indentation:2 -# End: -# vi:sw=2 - diff --git a/snappy-1.1.0/m4/gtest.m4 b/snappy-1.1.0/m4/gtest.m4 deleted file mode 100644 index 98e61f9..0000000 --- a/snappy-1.1.0/m4/gtest.m4 +++ /dev/null @@ -1,74 +0,0 @@ -dnl GTEST_LIB_CHECK([minimum version [, -dnl action if found [,action if not found]]]) -dnl -dnl Check for the presence of the Google Test library, optionally at a minimum -dnl version, and indicate a viable version with the HAVE_GTEST flag. It defines -dnl standard variables for substitution including GTEST_CPPFLAGS, -dnl GTEST_CXXFLAGS, GTEST_LDFLAGS, and GTEST_LIBS. It also defines -dnl GTEST_VERSION as the version of Google Test found. Finally, it provides -dnl optional custom action slots in the event GTEST is found or not. -AC_DEFUN([GTEST_LIB_CHECK], -[ -dnl Provide a flag to enable or disable Google Test usage. -AC_ARG_ENABLE([gtest], - [AS_HELP_STRING([--enable-gtest], - [Enable tests using the Google C++ Testing Framework. - (Default is enabled.)])], - [], - [enable_gtest=]) -AC_ARG_VAR([GTEST_CONFIG], - [The exact path of Google Test's 'gtest-config' script.]) -AC_ARG_VAR([GTEST_CPPFLAGS], - [C-like preprocessor flags for Google Test.]) -AC_ARG_VAR([GTEST_CXXFLAGS], - [C++ compile flags for Google Test.]) -AC_ARG_VAR([GTEST_LDFLAGS], - [Linker path and option flags for Google Test.]) -AC_ARG_VAR([GTEST_LIBS], - [Library linking flags for Google Test.]) -AC_ARG_VAR([GTEST_VERSION], - [The version of Google Test available.]) -HAVE_GTEST="no" -AS_IF([test "x${enable_gtest}" != "xno"], - [AC_MSG_CHECKING([for 'gtest-config']) - AS_IF([test "x${enable_gtest}" = "xyes"], - [AS_IF([test -x "${enable_gtest}/scripts/gtest-config"], - [GTEST_CONFIG="${enable_gtest}/scripts/gtest-config"], - [GTEST_CONFIG="${enable_gtest}/bin/gtest-config"]) - AS_IF([test -x "${GTEST_CONFIG}"], [], - [AC_MSG_RESULT([no]) - AC_MSG_ERROR([dnl -Unable to locate either a built or installed Google Test. -The specific location '${enable_gtest}' was provided for a built or installed -Google Test, but no 'gtest-config' script could be found at this location.]) - ])], - [AC_PATH_PROG([GTEST_CONFIG], [gtest-config])]) - AS_IF([test -x "${GTEST_CONFIG}"], - [AC_MSG_RESULT([${GTEST_CONFIG}]) - m4_ifval([$1], - [_gtest_min_version="--min-version=$1" - AC_MSG_CHECKING([for Google Test at least version >= $1])], - [_gtest_min_version="--min-version=0" - AC_MSG_CHECKING([for Google Test])]) - AS_IF([${GTEST_CONFIG} ${_gtest_min_version}], - [AC_MSG_RESULT([yes]) - HAVE_GTEST='yes'], - [AC_MSG_RESULT([no])])], - [AC_MSG_RESULT([no])]) - AS_IF([test "x${HAVE_GTEST}" = "xyes"], - [GTEST_CPPFLAGS=`${GTEST_CONFIG} --cppflags` - GTEST_CXXFLAGS=`${GTEST_CONFIG} --cxxflags` - GTEST_LDFLAGS=`${GTEST_CONFIG} --ldflags` - GTEST_LIBS=`${GTEST_CONFIG} --libs` - GTEST_VERSION=`${GTEST_CONFIG} --version` - AC_DEFINE([HAVE_GTEST],[1],[Defined when Google Test is available.])], - [AS_IF([test "x${enable_gtest}" = "xyes"], - [AC_MSG_ERROR([dnl -Google Test was enabled, but no viable version could be found.]) - ])])]) -AC_SUBST([HAVE_GTEST]) -AM_CONDITIONAL([HAVE_GTEST],[test "x$HAVE_GTEST" = "xyes"]) -AS_IF([test "x$HAVE_GTEST" = "xyes"], - [m4_ifval([$2], [$2])], - [m4_ifval([$3], [$3])]) -]) diff --git a/snappy-1.1.0/missing b/snappy-1.1.0/missing deleted file mode 100755 index 86a8fc3..0000000 --- a/snappy-1.1.0/missing +++ /dev/null @@ -1,331 +0,0 @@ -#! /bin/sh -# Common stub for a few missing GNU programs while installing. - -scriptversion=2012-01-06.13; # UTC - -# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006, -# 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. -# Originally by Fran,cois Pinard , 1996. - -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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You should only need it if - you modified a \`.texi' or \`.texinfo' file, or any other file - indirectly affecting the aspect of the manual. The spurious - call might also be the consequence of using a buggy \`make' (AIX, - DU, IRIX). You might want to install the \`Texinfo' package or - the \`GNU make' package. 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You may also peek at any GNU archive site, in case - some other package would contain this missing \`$1' program." - exit 1 - ;; -esac - -exit 0 - -# Local variables: -# eval: (add-hook 'write-file-hooks 'time-stamp) -# time-stamp-start: "scriptversion=" -# time-stamp-format: "%:y-%02m-%02d.%02H" -# time-stamp-time-zone: "UTC" -# time-stamp-end: "; # UTC" -# End: diff --git a/snappy-1.1.0/snappy-c.cc b/snappy-1.1.0/snappy-c.cc deleted file mode 100644 index 473a0b0..0000000 --- a/snappy-1.1.0/snappy-c.cc +++ /dev/null @@ -1,90 +0,0 @@ -// Copyright 2011 Martin Gieseking . -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include "snappy.h" -#include "snappy-c.h" - -extern "C" { - -snappy_status snappy_compress(const char* input, - size_t input_length, - char* compressed, - size_t *compressed_length) { - if (*compressed_length < snappy_max_compressed_length(input_length)) { - return SNAPPY_BUFFER_TOO_SMALL; - } - snappy::RawCompress(input, input_length, compressed, compressed_length); - return SNAPPY_OK; -} - -snappy_status snappy_uncompress(const char* compressed, - size_t compressed_length, - char* uncompressed, - size_t* uncompressed_length) { - size_t real_uncompressed_length; - if (!snappy::GetUncompressedLength(compressed, - compressed_length, - &real_uncompressed_length)) { - return SNAPPY_INVALID_INPUT; - } - if (*uncompressed_length < real_uncompressed_length) { - return SNAPPY_BUFFER_TOO_SMALL; - } - if (!snappy::RawUncompress(compressed, compressed_length, uncompressed)) { - return SNAPPY_INVALID_INPUT; - } - *uncompressed_length = real_uncompressed_length; - return SNAPPY_OK; -} - -size_t snappy_max_compressed_length(size_t source_length) { - return snappy::MaxCompressedLength(source_length); -} - -snappy_status snappy_uncompressed_length(const char *compressed, - size_t compressed_length, - size_t *result) { - if (snappy::GetUncompressedLength(compressed, - compressed_length, - result)) { - return SNAPPY_OK; - } else { - return SNAPPY_INVALID_INPUT; - } -} - -snappy_status snappy_validate_compressed_buffer(const char *compressed, - size_t compressed_length) { - if (snappy::IsValidCompressedBuffer(compressed, compressed_length)) { - return SNAPPY_OK; - } else { - return SNAPPY_INVALID_INPUT; - } -} - -} // extern "C" diff --git a/snappy-1.1.0/snappy-c.h b/snappy-1.1.0/snappy-c.h deleted file mode 100644 index c6c2a86..0000000 --- a/snappy-1.1.0/snappy-c.h +++ /dev/null @@ -1,138 +0,0 @@ -/* - * Copyright 2011 Martin Gieseking . - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Plain C interface (a wrapper around the C++ implementation). - */ - -#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_ -#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -#include - -/* - * Return values; see the documentation for each function to know - * what each can return. - */ -typedef enum { - SNAPPY_OK = 0, - SNAPPY_INVALID_INPUT = 1, - SNAPPY_BUFFER_TOO_SMALL = 2 -} snappy_status; - -/* - * Takes the data stored in "input[0..input_length-1]" and stores - * it in the array pointed to by "compressed". - * - * signals the space available in "compressed". - * If it is not at least equal to "snappy_max_compressed_length(input_length)", - * SNAPPY_BUFFER_TOO_SMALL is returned. After successful compression, - * contains the true length of the compressed output, - * and SNAPPY_OK is returned. - * - * Example: - * size_t output_length = snappy_max_compressed_length(input_length); - * char* output = (char*)malloc(output_length); - * if (snappy_compress(input, input_length, output, &output_length) - * == SNAPPY_OK) { - * ... Process(output, output_length) ... - * } - * free(output); - */ -snappy_status snappy_compress(const char* input, - size_t input_length, - char* compressed, - size_t* compressed_length); - -/* - * Given data in "compressed[0..compressed_length-1]" generated by - * calling the snappy_compress routine, this routine stores - * the uncompressed data to - * uncompressed[0..uncompressed_length-1]. - * Returns failure (a value not equal to SNAPPY_OK) if the message - * is corrupted and could not be decrypted. - * - * signals the space available in "uncompressed". - * If it is not at least equal to the value returned by - * snappy_uncompressed_length for this stream, SNAPPY_BUFFER_TOO_SMALL - * is returned. After successful decompression, - * contains the true length of the decompressed output. - * - * Example: - * size_t output_length; - * if (snappy_uncompressed_length(input, input_length, &output_length) - * != SNAPPY_OK) { - * ... fail ... - * } - * char* output = (char*)malloc(output_length); - * if (snappy_uncompress(input, input_length, output, &output_length) - * == SNAPPY_OK) { - * ... Process(output, output_length) ... - * } - * free(output); - */ -snappy_status snappy_uncompress(const char* compressed, - size_t compressed_length, - char* uncompressed, - size_t* uncompressed_length); - -/* - * Returns the maximal size of the compressed representation of - * input data that is "source_length" bytes in length. - */ -size_t snappy_max_compressed_length(size_t source_length); - -/* - * REQUIRES: "compressed[]" was produced by snappy_compress() - * Returns SNAPPY_OK and stores the length of the uncompressed data in - * *result normally. Returns SNAPPY_INVALID_INPUT on parsing error. - * This operation takes O(1) time. - */ -snappy_status snappy_uncompressed_length(const char* compressed, - size_t compressed_length, - size_t* result); - -/* - * Check if the contents of "compressed[]" can be uncompressed successfully. - * Does not return the uncompressed data; if so, returns SNAPPY_OK, - * or if not, returns SNAPPY_INVALID_INPUT. - * Takes time proportional to compressed_length, but is usually at least a - * factor of four faster than actual decompression. - */ -snappy_status snappy_validate_compressed_buffer(const char* compressed, - size_t compressed_length); - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_ */ diff --git a/snappy-1.1.0/snappy-internal.h b/snappy-1.1.0/snappy-internal.h deleted file mode 100644 index c99d331..0000000 --- a/snappy-1.1.0/snappy-internal.h +++ /dev/null @@ -1,150 +0,0 @@ -// Copyright 2008 Google Inc. All Rights Reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Internals shared between the Snappy implementation and its unittest. - -#ifndef UTIL_SNAPPY_SNAPPY_INTERNAL_H_ -#define UTIL_SNAPPY_SNAPPY_INTERNAL_H_ - -#include "snappy-stubs-internal.h" - -namespace snappy { -namespace internal { - -class WorkingMemory { - public: - WorkingMemory() : large_table_(NULL) { } - ~WorkingMemory() { delete[] large_table_; } - - // Allocates and clears a hash table using memory in "*this", - // stores the number of buckets in "*table_size" and returns a pointer to - // the base of the hash table. - uint16* GetHashTable(size_t input_size, int* table_size); - - private: - uint16 small_table_[1<<10]; // 2KB - uint16* large_table_; // Allocated only when needed - - DISALLOW_COPY_AND_ASSIGN(WorkingMemory); -}; - -// Flat array compression that does not emit the "uncompressed length" -// prefix. Compresses "input" string to the "*op" buffer. -// -// REQUIRES: "input_length <= kBlockSize" -// REQUIRES: "op" points to an array of memory that is at least -// "MaxCompressedLength(input_length)" in size. -// REQUIRES: All elements in "table[0..table_size-1]" are initialized to zero. -// REQUIRES: "table_size" is a power of two -// -// Returns an "end" pointer into "op" buffer. -// "end - op" is the compressed size of "input". -char* CompressFragment(const char* input, - size_t input_length, - char* op, - uint16* table, - const int table_size); - -// Return the largest n such that -// -// s1[0,n-1] == s2[0,n-1] -// and n <= (s2_limit - s2). -// -// Does not read *s2_limit or beyond. -// Does not read *(s1 + (s2_limit - s2)) or beyond. -// Requires that s2_limit >= s2. -// -// Separate implementation for x86_64, for speed. Uses the fact that -// x86_64 is little endian. -#if defined(ARCH_K8) -static inline int FindMatchLength(const char* s1, - const char* s2, - const char* s2_limit) { - assert(s2_limit >= s2); - int matched = 0; - - // Find out how long the match is. We loop over the data 64 bits at a - // time until we find a 64-bit block that doesn't match; then we find - // the first non-matching bit and use that to calculate the total - // length of the match. - while (PREDICT_TRUE(s2 <= s2_limit - 8)) { - if (PREDICT_FALSE(UNALIGNED_LOAD64(s2) == UNALIGNED_LOAD64(s1 + matched))) { - s2 += 8; - matched += 8; - } else { - // On current (mid-2008) Opteron models there is a 3% more - // efficient code sequence to find the first non-matching byte. - // However, what follows is ~10% better on Intel Core 2 and newer, - // and we expect AMD's bsf instruction to improve. - uint64 x = UNALIGNED_LOAD64(s2) ^ UNALIGNED_LOAD64(s1 + matched); - int matching_bits = Bits::FindLSBSetNonZero64(x); - matched += matching_bits >> 3; - return matched; - } - } - while (PREDICT_TRUE(s2 < s2_limit)) { - if (PREDICT_TRUE(s1[matched] == *s2)) { - ++s2; - ++matched; - } else { - return matched; - } - } - return matched; -} -#else -static inline int FindMatchLength(const char* s1, - const char* s2, - const char* s2_limit) { - // Implementation based on the x86-64 version, above. - assert(s2_limit >= s2); - int matched = 0; - - while (s2 <= s2_limit - 4 && - UNALIGNED_LOAD32(s2) == UNALIGNED_LOAD32(s1 + matched)) { - s2 += 4; - matched += 4; - } - if (LittleEndian::IsLittleEndian() && s2 <= s2_limit - 4) { - uint32 x = UNALIGNED_LOAD32(s2) ^ UNALIGNED_LOAD32(s1 + matched); - int matching_bits = Bits::FindLSBSetNonZero(x); - matched += matching_bits >> 3; - } else { - while ((s2 < s2_limit) && (s1[matched] == *s2)) { - ++s2; - ++matched; - } - } - return matched; -} -#endif - -} // end namespace internal -} // end namespace snappy - -#endif // UTIL_SNAPPY_SNAPPY_INTERNAL_H_ diff --git a/snappy-1.1.0/snappy-sinksource.cc b/snappy-1.1.0/snappy-sinksource.cc deleted file mode 100644 index 5844552..0000000 --- a/snappy-1.1.0/snappy-sinksource.cc +++ /dev/null @@ -1,71 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include - -#include "snappy-sinksource.h" - -namespace snappy { - -Source::~Source() { } - -Sink::~Sink() { } - -char* Sink::GetAppendBuffer(size_t length, char* scratch) { - return scratch; -} - -ByteArraySource::~ByteArraySource() { } - -size_t ByteArraySource::Available() const { return left_; } - -const char* ByteArraySource::Peek(size_t* len) { - *len = left_; - return ptr_; -} - -void ByteArraySource::Skip(size_t n) { - left_ -= n; - ptr_ += n; -} - -UncheckedByteArraySink::~UncheckedByteArraySink() { } - -void UncheckedByteArraySink::Append(const char* data, size_t n) { - // Do no copying if the caller filled in the result of GetAppendBuffer() - if (data != dest_) { - memcpy(dest_, data, n); - } - dest_ += n; -} - -char* UncheckedByteArraySink::GetAppendBuffer(size_t len, char* scratch) { - return dest_; -} - -} diff --git a/snappy-1.1.0/snappy-sinksource.h b/snappy-1.1.0/snappy-sinksource.h deleted file mode 100644 index faabfa1..0000000 --- a/snappy-1.1.0/snappy-sinksource.h +++ /dev/null @@ -1,137 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#ifndef UTIL_SNAPPY_SNAPPY_SINKSOURCE_H_ -#define UTIL_SNAPPY_SNAPPY_SINKSOURCE_H_ - -#include - - -namespace snappy { - -// A Sink is an interface that consumes a sequence of bytes. -class Sink { - public: - Sink() { } - virtual ~Sink(); - - // Append "bytes[0,n-1]" to this. - virtual void Append(const char* bytes, size_t n) = 0; - - // Returns a writable buffer of the specified length for appending. - // May return a pointer to the caller-owned scratch buffer which - // must have at least the indicated length. The returned buffer is - // only valid until the next operation on this Sink. - // - // After writing at most "length" bytes, call Append() with the - // pointer returned from this function and the number of bytes - // written. Many Append() implementations will avoid copying - // bytes if this function returned an internal buffer. - // - // If a non-scratch buffer is returned, the caller may only pass a - // prefix of it to Append(). That is, it is not correct to pass an - // interior pointer of the returned array to Append(). - // - // The default implementation always returns the scratch buffer. - virtual char* GetAppendBuffer(size_t length, char* scratch); - - - private: - // No copying - Sink(const Sink&); - void operator=(const Sink&); -}; - -// A Source is an interface that yields a sequence of bytes -class Source { - public: - Source() { } - virtual ~Source(); - - // Return the number of bytes left to read from the source - virtual size_t Available() const = 0; - - // Peek at the next flat region of the source. Does not reposition - // the source. The returned region is empty iff Available()==0. - // - // Returns a pointer to the beginning of the region and store its - // length in *len. - // - // The returned region is valid until the next call to Skip() or - // until this object is destroyed, whichever occurs first. - // - // The returned region may be larger than Available() (for example - // if this ByteSource is a view on a substring of a larger source). - // The caller is responsible for ensuring that it only reads the - // Available() bytes. - virtual const char* Peek(size_t* len) = 0; - - // Skip the next n bytes. Invalidates any buffer returned by - // a previous call to Peek(). - // REQUIRES: Available() >= n - virtual void Skip(size_t n) = 0; - - private: - // No copying - Source(const Source&); - void operator=(const Source&); -}; - -// A Source implementation that yields the contents of a flat array -class ByteArraySource : public Source { - public: - ByteArraySource(const char* p, size_t n) : ptr_(p), left_(n) { } - virtual ~ByteArraySource(); - virtual size_t Available() const; - virtual const char* Peek(size_t* len); - virtual void Skip(size_t n); - private: - const char* ptr_; - size_t left_; -}; - -// A Sink implementation that writes to a flat array without any bound checks. -class UncheckedByteArraySink : public Sink { - public: - explicit UncheckedByteArraySink(char* dest) : dest_(dest) { } - virtual ~UncheckedByteArraySink(); - virtual void Append(const char* data, size_t n); - virtual char* GetAppendBuffer(size_t len, char* scratch); - - // Return the current output pointer so that a caller can see how - // many bytes were produced. - // Note: this is not a Sink method. - char* CurrentDestination() const { return dest_; } - private: - char* dest_; -}; - - -} - -#endif // UTIL_SNAPPY_SNAPPY_SINKSOURCE_H_ diff --git a/snappy-1.1.0/snappy-stubs-internal.cc b/snappy-1.1.0/snappy-stubs-internal.cc deleted file mode 100644 index 6ed3343..0000000 --- a/snappy-1.1.0/snappy-stubs-internal.cc +++ /dev/null @@ -1,42 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include -#include - -#include "snappy-stubs-internal.h" - -namespace snappy { - -void Varint::Append32(string* s, uint32 value) { - char buf[Varint::kMax32]; - const char* p = Varint::Encode32(buf, value); - s->append(buf, p - buf); -} - -} // namespace snappy diff --git a/snappy-1.1.0/snappy-stubs-internal.h b/snappy-1.1.0/snappy-stubs-internal.h deleted file mode 100644 index 12393b6..0000000 --- a/snappy-1.1.0/snappy-stubs-internal.h +++ /dev/null @@ -1,491 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Various stubs for the open-source version of Snappy. - -#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_ -#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include - -#include -#include -#include - -#ifdef HAVE_SYS_MMAN_H -#include -#endif - -#include "snappy-stubs-public.h" - -#if defined(__x86_64__) - -// Enable 64-bit optimized versions of some routines. -#define ARCH_K8 1 - -#endif - -// Needed by OS X, among others. -#ifndef MAP_ANONYMOUS -#define MAP_ANONYMOUS MAP_ANON -#endif - -// Pull in std::min, std::ostream, and the likes. This is safe because this -// header file is never used from any public header files. -using namespace std; - -// The size of an array, if known at compile-time. -// Will give unexpected results if used on a pointer. -// We undefine it first, since some compilers already have a definition. -#ifdef ARRAYSIZE -#undef ARRAYSIZE -#endif -#define ARRAYSIZE(a) (sizeof(a) / sizeof(*(a))) - -// Static prediction hints. -#ifdef HAVE_BUILTIN_EXPECT -#define PREDICT_FALSE(x) (__builtin_expect(x, 0)) -#define PREDICT_TRUE(x) (__builtin_expect(!!(x), 1)) -#else -#define PREDICT_FALSE(x) x -#define PREDICT_TRUE(x) x -#endif - -// This is only used for recomputing the tag byte table used during -// decompression; for simplicity we just remove it from the open-source -// version (anyone who wants to regenerate it can just do the call -// themselves within main()). -#define DEFINE_bool(flag_name, default_value, description) \ - bool FLAGS_ ## flag_name = default_value -#define DECLARE_bool(flag_name) \ - extern bool FLAGS_ ## flag_name - -namespace snappy { - -static const uint32 kuint32max = static_cast(0xFFFFFFFF); -static const int64 kint64max = static_cast(0x7FFFFFFFFFFFFFFFLL); - -// Potentially unaligned loads and stores. - -// x86 and PowerPC can simply do these loads and stores native. - -#if defined(__i386__) || defined(__x86_64__) || defined(__powerpc__) - -#define UNALIGNED_LOAD16(_p) (*reinterpret_cast(_p)) -#define UNALIGNED_LOAD32(_p) (*reinterpret_cast(_p)) -#define UNALIGNED_LOAD64(_p) (*reinterpret_cast(_p)) - -#define UNALIGNED_STORE16(_p, _val) (*reinterpret_cast(_p) = (_val)) -#define UNALIGNED_STORE32(_p, _val) (*reinterpret_cast(_p) = (_val)) -#define UNALIGNED_STORE64(_p, _val) (*reinterpret_cast(_p) = (_val)) - -// ARMv7 and newer support native unaligned accesses, but only of 16-bit -// and 32-bit values (not 64-bit); older versions either raise a fatal signal, -// do an unaligned read and rotate the words around a bit, or do the reads very -// slowly (trip through kernel mode). There's no simple #define that says just -// “ARMv7 or higher”, so we have to filter away all ARMv5 and ARMv6 -// sub-architectures. -// -// This is a mess, but there's not much we can do about it. - -#elif defined(__arm__) && \ - !defined(__ARM_ARCH_4__) && \ - !defined(__ARM_ARCH_4T__) && \ - !defined(__ARM_ARCH_5__) && \ - !defined(__ARM_ARCH_5T__) && \ - !defined(__ARM_ARCH_5TE__) && \ - !defined(__ARM_ARCH_5TEJ__) && \ - !defined(__ARM_ARCH_6__) && \ - !defined(__ARM_ARCH_6J__) && \ - !defined(__ARM_ARCH_6K__) && \ - !defined(__ARM_ARCH_6Z__) && \ - !defined(__ARM_ARCH_6ZK__) && \ - !defined(__ARM_ARCH_6T2__) - -#define UNALIGNED_LOAD16(_p) (*reinterpret_cast(_p)) -#define UNALIGNED_LOAD32(_p) (*reinterpret_cast(_p)) - -#define UNALIGNED_STORE16(_p, _val) (*reinterpret_cast(_p) = (_val)) -#define UNALIGNED_STORE32(_p, _val) (*reinterpret_cast(_p) = (_val)) - -// TODO(user): NEON supports unaligned 64-bit loads and stores. -// See if that would be more efficient on platforms supporting it, -// at least for copies. - -inline uint64 UNALIGNED_LOAD64(const void *p) { - uint64 t; - memcpy(&t, p, sizeof t); - return t; -} - -inline void UNALIGNED_STORE64(void *p, uint64 v) { - memcpy(p, &v, sizeof v); -} - -#else - -// These functions are provided for architectures that don't support -// unaligned loads and stores. - -inline uint16 UNALIGNED_LOAD16(const void *p) { - uint16 t; - memcpy(&t, p, sizeof t); - return t; -} - -inline uint32 UNALIGNED_LOAD32(const void *p) { - uint32 t; - memcpy(&t, p, sizeof t); - return t; -} - -inline uint64 UNALIGNED_LOAD64(const void *p) { - uint64 t; - memcpy(&t, p, sizeof t); - return t; -} - -inline void UNALIGNED_STORE16(void *p, uint16 v) { - memcpy(p, &v, sizeof v); -} - -inline void UNALIGNED_STORE32(void *p, uint32 v) { - memcpy(p, &v, sizeof v); -} - -inline void UNALIGNED_STORE64(void *p, uint64 v) { - memcpy(p, &v, sizeof v); -} - -#endif - -// This can be more efficient than UNALIGNED_LOAD64 + UNALIGNED_STORE64 -// on some platforms, in particular ARM. -inline void UnalignedCopy64(const void *src, void *dst) { - if (sizeof(void *) == 8) { - UNALIGNED_STORE64(dst, UNALIGNED_LOAD64(src)); - } else { - const char *src_char = reinterpret_cast(src); - char *dst_char = reinterpret_cast(dst); - - UNALIGNED_STORE32(dst_char, UNALIGNED_LOAD32(src_char)); - UNALIGNED_STORE32(dst_char + 4, UNALIGNED_LOAD32(src_char + 4)); - } -} - -// The following guarantees declaration of the byte swap functions. -#ifdef WORDS_BIGENDIAN - -#ifdef HAVE_SYS_BYTEORDER_H -#include -#endif - -#ifdef HAVE_SYS_ENDIAN_H -#include -#endif - -#ifdef _MSC_VER -#include -#define bswap_16(x) _byteswap_ushort(x) -#define bswap_32(x) _byteswap_ulong(x) -#define bswap_64(x) _byteswap_uint64(x) - -#elif defined(__APPLE__) -// Mac OS X / Darwin features -#include -#define bswap_16(x) OSSwapInt16(x) -#define bswap_32(x) OSSwapInt32(x) -#define bswap_64(x) OSSwapInt64(x) - -#elif defined(HAVE_BYTESWAP_H) -#include - -#elif defined(bswap32) -// FreeBSD defines bswap{16,32,64} in (already #included). -#define bswap_16(x) bswap16(x) -#define bswap_32(x) bswap32(x) -#define bswap_64(x) bswap64(x) - -#elif defined(BSWAP_64) -// Solaris 10 defines BSWAP_{16,32,64} in (already #included). -#define bswap_16(x) BSWAP_16(x) -#define bswap_32(x) BSWAP_32(x) -#define bswap_64(x) BSWAP_64(x) - -#else - -inline uint16 bswap_16(uint16 x) { - return (x << 8) | (x >> 8); -} - -inline uint32 bswap_32(uint32 x) { - x = ((x & 0xff00ff00UL) >> 8) | ((x & 0x00ff00ffUL) << 8); - return (x >> 16) | (x << 16); -} - -inline uint64 bswap_64(uint64 x) { - x = ((x & 0xff00ff00ff00ff00ULL) >> 8) | ((x & 0x00ff00ff00ff00ffULL) << 8); - x = ((x & 0xffff0000ffff0000ULL) >> 16) | ((x & 0x0000ffff0000ffffULL) << 16); - return (x >> 32) | (x << 32); -} - -#endif - -#endif // WORDS_BIGENDIAN - -// Convert to little-endian storage, opposite of network format. -// Convert x from host to little endian: x = LittleEndian.FromHost(x); -// convert x from little endian to host: x = LittleEndian.ToHost(x); -// -// Store values into unaligned memory converting to little endian order: -// LittleEndian.Store16(p, x); -// -// Load unaligned values stored in little endian converting to host order: -// x = LittleEndian.Load16(p); -class LittleEndian { - public: - // Conversion functions. -#ifdef WORDS_BIGENDIAN - - static uint16 FromHost16(uint16 x) { return bswap_16(x); } - static uint16 ToHost16(uint16 x) { return bswap_16(x); } - - static uint32 FromHost32(uint32 x) { return bswap_32(x); } - static uint32 ToHost32(uint32 x) { return bswap_32(x); } - - static bool IsLittleEndian() { return false; } - -#else // !defined(WORDS_BIGENDIAN) - - static uint16 FromHost16(uint16 x) { return x; } - static uint16 ToHost16(uint16 x) { return x; } - - static uint32 FromHost32(uint32 x) { return x; } - static uint32 ToHost32(uint32 x) { return x; } - - static bool IsLittleEndian() { return true; } - -#endif // !defined(WORDS_BIGENDIAN) - - // Functions to do unaligned loads and stores in little-endian order. - static uint16 Load16(const void *p) { - return ToHost16(UNALIGNED_LOAD16(p)); - } - - static void Store16(void *p, uint16 v) { - UNALIGNED_STORE16(p, FromHost16(v)); - } - - static uint32 Load32(const void *p) { - return ToHost32(UNALIGNED_LOAD32(p)); - } - - static void Store32(void *p, uint32 v) { - UNALIGNED_STORE32(p, FromHost32(v)); - } -}; - -// Some bit-manipulation functions. -class Bits { - public: - // Return floor(log2(n)) for positive integer n. Returns -1 iff n == 0. - static int Log2Floor(uint32 n); - - // Return the first set least / most significant bit, 0-indexed. Returns an - // undefined value if n == 0. FindLSBSetNonZero() is similar to ffs() except - // that it's 0-indexed. - static int FindLSBSetNonZero(uint32 n); - static int FindLSBSetNonZero64(uint64 n); - - private: - DISALLOW_COPY_AND_ASSIGN(Bits); -}; - -#ifdef HAVE_BUILTIN_CTZ - -inline int Bits::Log2Floor(uint32 n) { - return n == 0 ? -1 : 31 ^ __builtin_clz(n); -} - -inline int Bits::FindLSBSetNonZero(uint32 n) { - return __builtin_ctz(n); -} - -inline int Bits::FindLSBSetNonZero64(uint64 n) { - return __builtin_ctzll(n); -} - -#else // Portable versions. - -inline int Bits::Log2Floor(uint32 n) { - if (n == 0) - return -1; - int log = 0; - uint32 value = n; - for (int i = 4; i >= 0; --i) { - int shift = (1 << i); - uint32 x = value >> shift; - if (x != 0) { - value = x; - log += shift; - } - } - assert(value == 1); - return log; -} - -inline int Bits::FindLSBSetNonZero(uint32 n) { - int rc = 31; - for (int i = 4, shift = 1 << 4; i >= 0; --i) { - const uint32 x = n << shift; - if (x != 0) { - n = x; - rc -= shift; - } - shift >>= 1; - } - return rc; -} - -// FindLSBSetNonZero64() is defined in terms of FindLSBSetNonZero(). -inline int Bits::FindLSBSetNonZero64(uint64 n) { - const uint32 bottombits = static_cast(n); - if (bottombits == 0) { - // Bottom bits are zero, so scan in top bits - return 32 + FindLSBSetNonZero(static_cast(n >> 32)); - } else { - return FindLSBSetNonZero(bottombits); - } -} - -#endif // End portable versions. - -// Variable-length integer encoding. -class Varint { - public: - // Maximum lengths of varint encoding of uint32. - static const int kMax32 = 5; - - // Attempts to parse a varint32 from a prefix of the bytes in [ptr,limit-1]. - // Never reads a character at or beyond limit. If a valid/terminated varint32 - // was found in the range, stores it in *OUTPUT and returns a pointer just - // past the last byte of the varint32. Else returns NULL. On success, - // "result <= limit". - static const char* Parse32WithLimit(const char* ptr, const char* limit, - uint32* OUTPUT); - - // REQUIRES "ptr" points to a buffer of length sufficient to hold "v". - // EFFECTS Encodes "v" into "ptr" and returns a pointer to the - // byte just past the last encoded byte. - static char* Encode32(char* ptr, uint32 v); - - // EFFECTS Appends the varint representation of "value" to "*s". - static void Append32(string* s, uint32 value); -}; - -inline const char* Varint::Parse32WithLimit(const char* p, - const char* l, - uint32* OUTPUT) { - const unsigned char* ptr = reinterpret_cast(p); - const unsigned char* limit = reinterpret_cast(l); - uint32 b, result; - if (ptr >= limit) return NULL; - b = *(ptr++); result = b & 127; if (b < 128) goto done; - if (ptr >= limit) return NULL; - b = *(ptr++); result |= (b & 127) << 7; if (b < 128) goto done; - if (ptr >= limit) return NULL; - b = *(ptr++); result |= (b & 127) << 14; if (b < 128) goto done; - if (ptr >= limit) return NULL; - b = *(ptr++); result |= (b & 127) << 21; if (b < 128) goto done; - if (ptr >= limit) return NULL; - b = *(ptr++); result |= (b & 127) << 28; if (b < 16) goto done; - return NULL; // Value is too long to be a varint32 - done: - *OUTPUT = result; - return reinterpret_cast(ptr); -} - -inline char* Varint::Encode32(char* sptr, uint32 v) { - // Operate on characters as unsigneds - unsigned char* ptr = reinterpret_cast(sptr); - static const int B = 128; - if (v < (1<<7)) { - *(ptr++) = v; - } else if (v < (1<<14)) { - *(ptr++) = v | B; - *(ptr++) = v>>7; - } else if (v < (1<<21)) { - *(ptr++) = v | B; - *(ptr++) = (v>>7) | B; - *(ptr++) = v>>14; - } else if (v < (1<<28)) { - *(ptr++) = v | B; - *(ptr++) = (v>>7) | B; - *(ptr++) = (v>>14) | B; - *(ptr++) = v>>21; - } else { - *(ptr++) = v | B; - *(ptr++) = (v>>7) | B; - *(ptr++) = (v>>14) | B; - *(ptr++) = (v>>21) | B; - *(ptr++) = v>>28; - } - return reinterpret_cast(ptr); -} - -// If you know the internal layout of the std::string in use, you can -// replace this function with one that resizes the string without -// filling the new space with zeros (if applicable) -- -// it will be non-portable but faster. -inline void STLStringResizeUninitialized(string* s, size_t new_size) { - s->resize(new_size); -} - -// Return a mutable char* pointing to a string's internal buffer, -// which may not be null-terminated. Writing through this pointer will -// modify the string. -// -// string_as_array(&str)[i] is valid for 0 <= i < str.size() until the -// next call to a string method that invalidates iterators. -// -// As of 2006-04, there is no standard-blessed way of getting a -// mutable reference to a string's internal buffer. However, issue 530 -// (http://www.open-std.org/JTC1/SC22/WG21/docs/lwg-defects.html#530) -// proposes this as the method. It will officially be part of the standard -// for C++0x. This should already work on all current implementations. -inline char* string_as_array(string* str) { - return str->empty() ? NULL : &*str->begin(); -} - -} // namespace snappy - -#endif // UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_ diff --git a/snappy-1.1.0/snappy-stubs-public.h b/snappy-1.1.0/snappy-stubs-public.h deleted file mode 100644 index 96d8865..0000000 --- a/snappy-1.1.0/snappy-stubs-public.h +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// Author: sesse@google.com (Steinar H. Gunderson) -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Various type stubs for the open-source version of Snappy. -// -// This file cannot include config.h, as it is included from snappy.h, -// which is a public header. Instead, snappy-stubs-public.h is generated by -// from snappy-stubs-public.h.in at configure time. - -#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_ -#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_ - -#if 1 -#include -#endif - -#if 1 -#include -#endif - -#define SNAPPY_MAJOR 1 -#define SNAPPY_MINOR 1 -#define SNAPPY_PATCHLEVEL 0 -#define SNAPPY_VERSION \ - ((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL) - -#include - -namespace snappy { - -#if 1 -typedef int8_t int8; -typedef uint8_t uint8; -typedef int16_t int16; -typedef uint16_t uint16; -typedef int32_t int32; -typedef uint32_t uint32; -typedef int64_t int64; -typedef uint64_t uint64; -#else -typedef signed char int8; -typedef unsigned char uint8; -typedef short int16; -typedef unsigned short uint16; -typedef int int32; -typedef unsigned int uint32; -typedef long long int64; -typedef unsigned long long uint64; -#endif - -typedef std::string string; - -#define DISALLOW_COPY_AND_ASSIGN(TypeName) \ - TypeName(const TypeName&); \ - void operator=(const TypeName&) - -} // namespace snappy - -#endif // UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_ diff --git a/snappy-1.1.0/snappy-stubs-public.h.in b/snappy-1.1.0/snappy-stubs-public.h.in deleted file mode 100644 index f0babcb..0000000 --- a/snappy-1.1.0/snappy-stubs-public.h.in +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// Author: sesse@google.com (Steinar H. Gunderson) -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Various type stubs for the open-source version of Snappy. -// -// This file cannot include config.h, as it is included from snappy.h, -// which is a public header. Instead, snappy-stubs-public.h is generated by -// from snappy-stubs-public.h.in at configure time. - -#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_ -#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_ - -#if @ac_cv_have_stdint_h@ -#include -#endif - -#if @ac_cv_have_stddef_h@ -#include -#endif - -#define SNAPPY_MAJOR @SNAPPY_MAJOR@ -#define SNAPPY_MINOR @SNAPPY_MINOR@ -#define SNAPPY_PATCHLEVEL @SNAPPY_PATCHLEVEL@ -#define SNAPPY_VERSION \ - ((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL) - -#include - -namespace snappy { - -#if @ac_cv_have_stdint_h@ -typedef int8_t int8; -typedef uint8_t uint8; -typedef int16_t int16; -typedef uint16_t uint16; -typedef int32_t int32; -typedef uint32_t uint32; -typedef int64_t int64; -typedef uint64_t uint64; -#else -typedef signed char int8; -typedef unsigned char uint8; -typedef short int16; -typedef unsigned short uint16; -typedef int int32; -typedef unsigned int uint32; -typedef long long int64; -typedef unsigned long long uint64; -#endif - -typedef std::string string; - -#define DISALLOW_COPY_AND_ASSIGN(TypeName) \ - TypeName(const TypeName&); \ - void operator=(const TypeName&) - -} // namespace snappy - -#endif // UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_ diff --git a/snappy-1.1.0/snappy-test.cc b/snappy-1.1.0/snappy-test.cc deleted file mode 100644 index 3f4003d..0000000 --- a/snappy-1.1.0/snappy-test.cc +++ /dev/null @@ -1,602 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Various stubs for the unit tests for the open-source version of Snappy. - -#include "snappy-test.h" - -#ifdef HAVE_WINDOWS_H -#define WIN32_LEAN_AND_MEAN -#include -#endif - -#include - -DEFINE_bool(run_microbenchmarks, true, - "Run microbenchmarks before doing anything else."); - -namespace snappy { - -string ReadTestDataFile(const string& base) { - string contents; - const char* srcdir = getenv("srcdir"); // This is set by Automake. - if (srcdir) { - file::ReadFileToString(string(srcdir) + "/testdata/" + base, - &contents, - file::Defaults()).CheckSuccess(); - } else { - file::ReadFileToString("testdata/" + base, - &contents, - file::Defaults()).CheckSuccess(); - } - return contents; -} - -string StringPrintf(const char* format, ...) { - char buf[4096]; - va_list ap; - va_start(ap, format); - vsnprintf(buf, sizeof(buf), format, ap); - va_end(ap); - return buf; -} - -bool benchmark_running = false; -int64 benchmark_real_time_us = 0; -int64 benchmark_cpu_time_us = 0; -string *benchmark_label = NULL; -int64 benchmark_bytes_processed = 0; - -void ResetBenchmarkTiming() { - benchmark_real_time_us = 0; - benchmark_cpu_time_us = 0; -} - -#ifdef WIN32 -LARGE_INTEGER benchmark_start_real; -FILETIME benchmark_start_cpu; -#else // WIN32 -struct timeval benchmark_start_real; -struct rusage benchmark_start_cpu; -#endif // WIN32 - -void StartBenchmarkTiming() { -#ifdef WIN32 - QueryPerformanceCounter(&benchmark_start_real); - FILETIME dummy; - CHECK(GetProcessTimes( - GetCurrentProcess(), &dummy, &dummy, &dummy, &benchmark_start_cpu)); -#else - gettimeofday(&benchmark_start_real, NULL); - if (getrusage(RUSAGE_SELF, &benchmark_start_cpu) == -1) { - perror("getrusage(RUSAGE_SELF)"); - exit(1); - } -#endif - benchmark_running = true; -} - -void StopBenchmarkTiming() { - if (!benchmark_running) { - return; - } - -#ifdef WIN32 - LARGE_INTEGER benchmark_stop_real; - LARGE_INTEGER benchmark_frequency; - QueryPerformanceCounter(&benchmark_stop_real); - QueryPerformanceFrequency(&benchmark_frequency); - - double elapsed_real = static_cast( - benchmark_stop_real.QuadPart - benchmark_start_real.QuadPart) / - benchmark_frequency.QuadPart; - benchmark_real_time_us += elapsed_real * 1e6 + 0.5; - - FILETIME benchmark_stop_cpu, dummy; - CHECK(GetProcessTimes( - GetCurrentProcess(), &dummy, &dummy, &dummy, &benchmark_stop_cpu)); - - ULARGE_INTEGER start_ulargeint; - start_ulargeint.LowPart = benchmark_start_cpu.dwLowDateTime; - start_ulargeint.HighPart = benchmark_start_cpu.dwHighDateTime; - - ULARGE_INTEGER stop_ulargeint; - stop_ulargeint.LowPart = benchmark_stop_cpu.dwLowDateTime; - stop_ulargeint.HighPart = benchmark_stop_cpu.dwHighDateTime; - - benchmark_cpu_time_us += - (stop_ulargeint.QuadPart - start_ulargeint.QuadPart + 5) / 10; -#else // WIN32 - struct timeval benchmark_stop_real; - gettimeofday(&benchmark_stop_real, NULL); - benchmark_real_time_us += - 1000000 * (benchmark_stop_real.tv_sec - benchmark_start_real.tv_sec); - benchmark_real_time_us += - (benchmark_stop_real.tv_usec - benchmark_start_real.tv_usec); - - struct rusage benchmark_stop_cpu; - if (getrusage(RUSAGE_SELF, &benchmark_stop_cpu) == -1) { - perror("getrusage(RUSAGE_SELF)"); - exit(1); - } - benchmark_cpu_time_us += 1000000 * (benchmark_stop_cpu.ru_utime.tv_sec - - benchmark_start_cpu.ru_utime.tv_sec); - benchmark_cpu_time_us += (benchmark_stop_cpu.ru_utime.tv_usec - - benchmark_start_cpu.ru_utime.tv_usec); -#endif // WIN32 - - benchmark_running = false; -} - -void SetBenchmarkLabel(const string& str) { - if (benchmark_label) { - delete benchmark_label; - } - benchmark_label = new string(str); -} - -void SetBenchmarkBytesProcessed(int64 bytes) { - benchmark_bytes_processed = bytes; -} - -struct BenchmarkRun { - int64 real_time_us; - int64 cpu_time_us; -}; - -struct BenchmarkCompareCPUTime { - bool operator() (const BenchmarkRun& a, const BenchmarkRun& b) const { - return a.cpu_time_us < b.cpu_time_us; - } -}; - -void Benchmark::Run() { - for (int test_case_num = start_; test_case_num <= stop_; ++test_case_num) { - // Run a few iterations first to find out approximately how fast - // the benchmark is. - const int kCalibrateIterations = 100; - ResetBenchmarkTiming(); - StartBenchmarkTiming(); - (*function_)(kCalibrateIterations, test_case_num); - StopBenchmarkTiming(); - - // Let each test case run for about 200ms, but at least as many - // as we used to calibrate. - // Run five times and pick the median. - const int kNumRuns = 5; - const int kMedianPos = kNumRuns / 2; - int num_iterations = 0; - if (benchmark_real_time_us > 0) { - num_iterations = 200000 * kCalibrateIterations / benchmark_real_time_us; - } - num_iterations = max(num_iterations, kCalibrateIterations); - BenchmarkRun benchmark_runs[kNumRuns]; - - for (int run = 0; run < kNumRuns; ++run) { - ResetBenchmarkTiming(); - StartBenchmarkTiming(); - (*function_)(num_iterations, test_case_num); - StopBenchmarkTiming(); - - benchmark_runs[run].real_time_us = benchmark_real_time_us; - benchmark_runs[run].cpu_time_us = benchmark_cpu_time_us; - } - - string heading = StringPrintf("%s/%d", name_.c_str(), test_case_num); - string human_readable_speed; - - nth_element(benchmark_runs, - benchmark_runs + kMedianPos, - benchmark_runs + kNumRuns, - BenchmarkCompareCPUTime()); - int64 real_time_us = benchmark_runs[kMedianPos].real_time_us; - int64 cpu_time_us = benchmark_runs[kMedianPos].cpu_time_us; - if (cpu_time_us <= 0) { - human_readable_speed = "?"; - } else { - int64 bytes_per_second = - benchmark_bytes_processed * 1000000 / cpu_time_us; - if (bytes_per_second < 1024) { - human_readable_speed = StringPrintf("%dB/s", bytes_per_second); - } else if (bytes_per_second < 1024 * 1024) { - human_readable_speed = StringPrintf( - "%.1fkB/s", bytes_per_second / 1024.0f); - } else if (bytes_per_second < 1024 * 1024 * 1024) { - human_readable_speed = StringPrintf( - "%.1fMB/s", bytes_per_second / (1024.0f * 1024.0f)); - } else { - human_readable_speed = StringPrintf( - "%.1fGB/s", bytes_per_second / (1024.0f * 1024.0f * 1024.0f)); - } - } - - fprintf(stderr, -#ifdef WIN32 - "%-18s %10I64d %10I64d %10d %s %s\n", -#else - "%-18s %10lld %10lld %10d %s %s\n", -#endif - heading.c_str(), - static_cast(real_time_us * 1000 / num_iterations), - static_cast(cpu_time_us * 1000 / num_iterations), - num_iterations, - human_readable_speed.c_str(), - benchmark_label->c_str()); - } -} - -#ifdef HAVE_LIBZ - -ZLib::ZLib() - : comp_init_(false), - uncomp_init_(false) { - Reinit(); -} - -ZLib::~ZLib() { - if (comp_init_) { deflateEnd(&comp_stream_); } - if (uncomp_init_) { inflateEnd(&uncomp_stream_); } -} - -void ZLib::Reinit() { - compression_level_ = Z_DEFAULT_COMPRESSION; - window_bits_ = MAX_WBITS; - mem_level_ = 8; // DEF_MEM_LEVEL - if (comp_init_) { - deflateEnd(&comp_stream_); - comp_init_ = false; - } - if (uncomp_init_) { - inflateEnd(&uncomp_stream_); - uncomp_init_ = false; - } - first_chunk_ = true; -} - -void ZLib::Reset() { - first_chunk_ = true; -} - -// --------- COMPRESS MODE - -// Initialization method to be called if we hit an error while -// compressing. On hitting an error, call this method before returning -// the error. -void ZLib::CompressErrorInit() { - deflateEnd(&comp_stream_); - comp_init_ = false; - Reset(); -} - -int ZLib::DeflateInit() { - return deflateInit2(&comp_stream_, - compression_level_, - Z_DEFLATED, - window_bits_, - mem_level_, - Z_DEFAULT_STRATEGY); -} - -int ZLib::CompressInit(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen) { - int err; - - comp_stream_.next_in = (Bytef*)source; - comp_stream_.avail_in = (uInt)*sourceLen; - if ((uLong)comp_stream_.avail_in != *sourceLen) return Z_BUF_ERROR; - comp_stream_.next_out = dest; - comp_stream_.avail_out = (uInt)*destLen; - if ((uLong)comp_stream_.avail_out != *destLen) return Z_BUF_ERROR; - - if ( !first_chunk_ ) // only need to set up stream the first time through - return Z_OK; - - if (comp_init_) { // we've already initted it - err = deflateReset(&comp_stream_); - if (err != Z_OK) { - LOG(WARNING) << "ERROR: Can't reset compress object; creating a new one"; - deflateEnd(&comp_stream_); - comp_init_ = false; - } - } - if (!comp_init_) { // first use - comp_stream_.zalloc = (alloc_func)0; - comp_stream_.zfree = (free_func)0; - comp_stream_.opaque = (voidpf)0; - err = DeflateInit(); - if (err != Z_OK) return err; - comp_init_ = true; - } - return Z_OK; -} - -// In a perfect world we'd always have the full buffer to compress -// when the time came, and we could just call Compress(). Alas, we -// want to do chunked compression on our webserver. In this -// application, we compress the header, send it off, then compress the -// results, send them off, then compress the footer. Thus we need to -// use the chunked compression features of zlib. -int ZLib::CompressAtMostOrAll(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen, - int flush_mode) { // Z_FULL_FLUSH or Z_FINISH - int err; - - if ( (err=CompressInit(dest, destLen, source, sourceLen)) != Z_OK ) - return err; - - // This is used to figure out how many bytes we wrote *this chunk* - int compressed_size = comp_stream_.total_out; - - // Some setup happens only for the first chunk we compress in a run - if ( first_chunk_ ) { - first_chunk_ = false; - } - - // flush_mode is Z_FINISH for all mode, Z_SYNC_FLUSH for incremental - // compression. - err = deflate(&comp_stream_, flush_mode); - - *sourceLen = comp_stream_.avail_in; - - if ((err == Z_STREAM_END || err == Z_OK) - && comp_stream_.avail_in == 0 - && comp_stream_.avail_out != 0 ) { - // we processed everything ok and the output buffer was large enough. - ; - } else if (err == Z_STREAM_END && comp_stream_.avail_in > 0) { - return Z_BUF_ERROR; // should never happen - } else if (err != Z_OK && err != Z_STREAM_END && err != Z_BUF_ERROR) { - // an error happened - CompressErrorInit(); - return err; - } else if (comp_stream_.avail_out == 0) { // not enough space - err = Z_BUF_ERROR; - } - - assert(err == Z_OK || err == Z_STREAM_END || err == Z_BUF_ERROR); - if (err == Z_STREAM_END) - err = Z_OK; - - // update the crc and other metadata - compressed_size = comp_stream_.total_out - compressed_size; // delta - *destLen = compressed_size; - - return err; -} - -int ZLib::CompressChunkOrAll(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong sourceLen, - int flush_mode) { // Z_FULL_FLUSH or Z_FINISH - const int ret = - CompressAtMostOrAll(dest, destLen, source, &sourceLen, flush_mode); - if (ret == Z_BUF_ERROR) - CompressErrorInit(); - return ret; -} - -// This routine only initializes the compression stream once. Thereafter, it -// just does a deflateReset on the stream, which should be faster. -int ZLib::Compress(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong sourceLen) { - int err; - if ( (err=CompressChunkOrAll(dest, destLen, source, sourceLen, - Z_FINISH)) != Z_OK ) - return err; - Reset(); // reset for next call to Compress - - return Z_OK; -} - - -// --------- UNCOMPRESS MODE - -int ZLib::InflateInit() { - return inflateInit2(&uncomp_stream_, MAX_WBITS); -} - -// Initialization method to be called if we hit an error while -// uncompressing. On hitting an error, call this method before -// returning the error. -void ZLib::UncompressErrorInit() { - inflateEnd(&uncomp_stream_); - uncomp_init_ = false; - Reset(); -} - -int ZLib::UncompressInit(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen) { - int err; - - uncomp_stream_.next_in = (Bytef*)source; - uncomp_stream_.avail_in = (uInt)*sourceLen; - // Check for source > 64K on 16-bit machine: - if ((uLong)uncomp_stream_.avail_in != *sourceLen) return Z_BUF_ERROR; - - uncomp_stream_.next_out = dest; - uncomp_stream_.avail_out = (uInt)*destLen; - if ((uLong)uncomp_stream_.avail_out != *destLen) return Z_BUF_ERROR; - - if ( !first_chunk_ ) // only need to set up stream the first time through - return Z_OK; - - if (uncomp_init_) { // we've already initted it - err = inflateReset(&uncomp_stream_); - if (err != Z_OK) { - LOG(WARNING) - << "ERROR: Can't reset uncompress object; creating a new one"; - UncompressErrorInit(); - } - } - if (!uncomp_init_) { - uncomp_stream_.zalloc = (alloc_func)0; - uncomp_stream_.zfree = (free_func)0; - uncomp_stream_.opaque = (voidpf)0; - err = InflateInit(); - if (err != Z_OK) return err; - uncomp_init_ = true; - } - return Z_OK; -} - -// If you compressed your data a chunk at a time, with CompressChunk, -// you can uncompress it a chunk at a time with UncompressChunk. -// Only difference bewteen chunked and unchunked uncompression -// is the flush mode we use: Z_SYNC_FLUSH (chunked) or Z_FINISH (unchunked). -int ZLib::UncompressAtMostOrAll(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen, - int flush_mode) { // Z_SYNC_FLUSH or Z_FINISH - int err = Z_OK; - - if ( (err=UncompressInit(dest, destLen, source, sourceLen)) != Z_OK ) { - LOG(WARNING) << "UncompressInit: Error: " << err << " SourceLen: " - << *sourceLen; - return err; - } - - // This is used to figure out how many output bytes we wrote *this chunk*: - const uLong old_total_out = uncomp_stream_.total_out; - - // This is used to figure out how many input bytes we read *this chunk*: - const uLong old_total_in = uncomp_stream_.total_in; - - // Some setup happens only for the first chunk we compress in a run - if ( first_chunk_ ) { - first_chunk_ = false; // so we don't do this again - - // For the first chunk *only* (to avoid infinite troubles), we let - // there be no actual data to uncompress. This sometimes triggers - // when the input is only the gzip header, say. - if ( *sourceLen == 0 ) { - *destLen = 0; - return Z_OK; - } - } - - // We'll uncompress as much as we can. If we end OK great, otherwise - // if we get an error that seems to be the gzip footer, we store the - // gzip footer and return OK, otherwise we return the error. - - // flush_mode is Z_SYNC_FLUSH for chunked mode, Z_FINISH for all mode. - err = inflate(&uncomp_stream_, flush_mode); - - // Figure out how many bytes of the input zlib slurped up: - const uLong bytes_read = uncomp_stream_.total_in - old_total_in; - CHECK_LE(source + bytes_read, source + *sourceLen); - *sourceLen = uncomp_stream_.avail_in; - - if ((err == Z_STREAM_END || err == Z_OK) // everything went ok - && uncomp_stream_.avail_in == 0) { // and we read it all - ; - } else if (err == Z_STREAM_END && uncomp_stream_.avail_in > 0) { - LOG(WARNING) - << "UncompressChunkOrAll: Received some extra data, bytes total: " - << uncomp_stream_.avail_in << " bytes: " - << string(reinterpret_cast(uncomp_stream_.next_in), - min(int(uncomp_stream_.avail_in), 20)); - UncompressErrorInit(); - return Z_DATA_ERROR; // what's the extra data for? - } else if (err != Z_OK && err != Z_STREAM_END && err != Z_BUF_ERROR) { - // an error happened - LOG(WARNING) << "UncompressChunkOrAll: Error: " << err - << " avail_out: " << uncomp_stream_.avail_out; - UncompressErrorInit(); - return err; - } else if (uncomp_stream_.avail_out == 0) { - err = Z_BUF_ERROR; - } - - assert(err == Z_OK || err == Z_BUF_ERROR || err == Z_STREAM_END); - if (err == Z_STREAM_END) - err = Z_OK; - - *destLen = uncomp_stream_.total_out - old_total_out; // size for this call - - return err; -} - -int ZLib::UncompressChunkOrAll(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong sourceLen, - int flush_mode) { // Z_SYNC_FLUSH or Z_FINISH - const int ret = - UncompressAtMostOrAll(dest, destLen, source, &sourceLen, flush_mode); - if (ret == Z_BUF_ERROR) - UncompressErrorInit(); - return ret; -} - -int ZLib::UncompressAtMost(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen) { - return UncompressAtMostOrAll(dest, destLen, source, sourceLen, Z_SYNC_FLUSH); -} - -// We make sure we've uncompressed everything, that is, the current -// uncompress stream is at a compressed-buffer-EOF boundary. In gzip -// mode, we also check the gzip footer to make sure we pass the gzip -// consistency checks. We RETURN true iff both types of checks pass. -bool ZLib::UncompressChunkDone() { - assert(!first_chunk_ && uncomp_init_); - // Make sure we're at the end-of-compressed-data point. This means - // if we call inflate with Z_FINISH we won't consume any input or - // write any output - Bytef dummyin, dummyout; - uLongf dummylen = 0; - if ( UncompressChunkOrAll(&dummyout, &dummylen, &dummyin, 0, Z_FINISH) - != Z_OK ) { - return false; - } - - // Make sure that when we exit, we can start a new round of chunks later - Reset(); - - return true; -} - -// Uncompresses the source buffer into the destination buffer. -// The destination buffer must be long enough to hold the entire -// decompressed contents. -// -// We only initialize the uncomp_stream once. Thereafter, we use -// inflateReset, which should be faster. -// -// Returns Z_OK on success, otherwise, it returns a zlib error code. -int ZLib::Uncompress(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong sourceLen) { - int err; - if ( (err=UncompressChunkOrAll(dest, destLen, source, sourceLen, - Z_FINISH)) != Z_OK ) { - Reset(); // let us try to compress again - return err; - } - if ( !UncompressChunkDone() ) // calls Reset() - return Z_DATA_ERROR; - return Z_OK; // stream_end is ok -} - -#endif // HAVE_LIBZ - -} // namespace snappy diff --git a/snappy-1.1.0/snappy-test.h b/snappy-1.1.0/snappy-test.h deleted file mode 100644 index bec9020..0000000 --- a/snappy-1.1.0/snappy-test.h +++ /dev/null @@ -1,584 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Various stubs for the unit tests for the open-source version of Snappy. - -#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_ -#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_ - -#include -#include - -#include "snappy-stubs-internal.h" - -#include -#include - -#ifdef HAVE_SYS_MMAN_H -#include -#endif - -#ifdef HAVE_SYS_RESOURCE_H -#include -#endif - -#ifdef HAVE_SYS_TIME_H -#include -#endif - -#ifdef HAVE_WINDOWS_H -#define WIN32_LEAN_AND_MEAN -#include -#endif - -#include - -#ifdef HAVE_GTEST - -#include -#undef TYPED_TEST -#define TYPED_TEST TEST -#define INIT_GTEST(argc, argv) ::testing::InitGoogleTest(argc, *argv) - -#else - -// Stubs for if the user doesn't have Google Test installed. - -#define TEST(test_case, test_subcase) \ - void Test_ ## test_case ## _ ## test_subcase() -#define INIT_GTEST(argc, argv) - -#define TYPED_TEST TEST -#define EXPECT_EQ CHECK_EQ -#define EXPECT_NE CHECK_NE -#define EXPECT_FALSE(cond) CHECK(!(cond)) - -#endif - -#ifdef HAVE_GFLAGS - -#include - -// This is tricky; both gflags and Google Test want to look at the command line -// arguments. Google Test seems to be the most happy with unknown arguments, -// though, so we call it first and hope for the best. -#define InitGoogle(argv0, argc, argv, remove_flags) \ - INIT_GTEST(argc, argv); \ - google::ParseCommandLineFlags(argc, argv, remove_flags); - -#else - -// If we don't have the gflags package installed, these can only be -// changed at compile time. -#define DEFINE_int32(flag_name, default_value, description) \ - static int FLAGS_ ## flag_name = default_value; - -#define InitGoogle(argv0, argc, argv, remove_flags) \ - INIT_GTEST(argc, argv) - -#endif - -#ifdef HAVE_LIBZ -#include "zlib.h" -#endif - -#ifdef HAVE_LIBLZO2 -#include "lzo/lzo1x.h" -#endif - -#ifdef HAVE_LIBLZF -extern "C" { -#include "lzf.h" -} -#endif - -#ifdef HAVE_LIBFASTLZ -#include "fastlz.h" -#endif - -#ifdef HAVE_LIBQUICKLZ -#include "quicklz.h" -#endif - -namespace { - -namespace File { - void Init() { } -} // namespace File - -namespace file { - int Defaults() { } - - class DummyStatus { - public: - void CheckSuccess() { } - }; - - DummyStatus ReadFileToString(const char* filename, string* data, int unused) { - FILE* fp = fopen(filename, "rb"); - if (fp == NULL) { - perror(filename); - exit(1); - } - - data->clear(); - while (!feof(fp)) { - char buf[4096]; - size_t ret = fread(buf, 1, 4096, fp); - if (ret == 0 && ferror(fp)) { - perror("fread"); - exit(1); - } - data->append(string(buf, ret)); - } - - fclose(fp); - } - - DummyStatus ReadFileToString(const string& filename, - string* data, - int unused) { - ReadFileToString(filename.c_str(), data, unused); - } - - DummyStatus WriteStringToFile(const string& str, - const string& filename, - int unused) { - FILE* fp = fopen(filename.c_str(), "wb"); - if (fp == NULL) { - perror(filename.c_str()); - exit(1); - } - - int ret = fwrite(str.data(), str.size(), 1, fp); - if (ret != 1) { - perror("fwrite"); - exit(1); - } - - fclose(fp); - } -} // namespace file - -} // namespace - -namespace snappy { - -#define FLAGS_test_random_seed 301 -typedef string TypeParam; - -void Test_CorruptedTest_VerifyCorrupted(); -void Test_Snappy_SimpleTests(); -void Test_Snappy_MaxBlowup(); -void Test_Snappy_RandomData(); -void Test_Snappy_FourByteOffset(); -void Test_SnappyCorruption_TruncatedVarint(); -void Test_SnappyCorruption_UnterminatedVarint(); -void Test_Snappy_ReadPastEndOfBuffer(); -void Test_Snappy_FindMatchLength(); -void Test_Snappy_FindMatchLengthRandom(); - -string ReadTestDataFile(const string& base); - -// A sprintf() variant that returns a std::string. -// Not safe for general use due to truncation issues. -string StringPrintf(const char* format, ...); - -// A simple, non-cryptographically-secure random generator. -class ACMRandom { - public: - explicit ACMRandom(uint32 seed) : seed_(seed) {} - - int32 Next(); - - int32 Uniform(int32 n) { - return Next() % n; - } - uint8 Rand8() { - return static_cast((Next() >> 1) & 0x000000ff); - } - bool OneIn(int X) { return Uniform(X) == 0; } - - // Skewed: pick "base" uniformly from range [0,max_log] and then - // return "base" random bits. The effect is to pick a number in the - // range [0,2^max_log-1] with bias towards smaller numbers. - int32 Skewed(int max_log); - - private: - static const uint32 M = 2147483647L; // 2^31-1 - uint32 seed_; -}; - -inline int32 ACMRandom::Next() { - static const uint64 A = 16807; // bits 14, 8, 7, 5, 2, 1, 0 - // We are computing - // seed_ = (seed_ * A) % M, where M = 2^31-1 - // - // seed_ must not be zero or M, or else all subsequent computed values - // will be zero or M respectively. For all other values, seed_ will end - // up cycling through every number in [1,M-1] - uint64 product = seed_ * A; - - // Compute (product % M) using the fact that ((x << 31) % M) == x. - seed_ = (product >> 31) + (product & M); - // The first reduction may overflow by 1 bit, so we may need to repeat. - // mod == M is not possible; using > allows the faster sign-bit-based test. - if (seed_ > M) { - seed_ -= M; - } - return seed_; -} - -inline int32 ACMRandom::Skewed(int max_log) { - const int32 base = (Next() - 1) % (max_log+1); - return (Next() - 1) & ((1u << base)-1); -} - -// A wall-time clock. This stub is not super-accurate, nor resistant to the -// system time changing. -class CycleTimer { - public: - CycleTimer() : real_time_us_(0) {} - - void Start() { -#ifdef WIN32 - QueryPerformanceCounter(&start_); -#else - gettimeofday(&start_, NULL); -#endif - } - - void Stop() { -#ifdef WIN32 - LARGE_INTEGER stop; - LARGE_INTEGER frequency; - QueryPerformanceCounter(&stop); - QueryPerformanceFrequency(&frequency); - - double elapsed = static_cast(stop.QuadPart - start_.QuadPart) / - frequency.QuadPart; - real_time_us_ += elapsed * 1e6 + 0.5; -#else - struct timeval stop; - gettimeofday(&stop, NULL); - - real_time_us_ += 1000000 * (stop.tv_sec - start_.tv_sec); - real_time_us_ += (stop.tv_usec - start_.tv_usec); -#endif - } - - double Get() { - return real_time_us_ * 1e-6; - } - - private: - int64 real_time_us_; -#ifdef WIN32 - LARGE_INTEGER start_; -#else - struct timeval start_; -#endif -}; - -// Minimalistic microbenchmark framework. - -typedef void (*BenchmarkFunction)(int, int); - -class Benchmark { - public: - Benchmark(const string& name, BenchmarkFunction function) : - name_(name), function_(function) {} - - Benchmark* DenseRange(int start, int stop) { - start_ = start; - stop_ = stop; - return this; - } - - void Run(); - - private: - const string name_; - const BenchmarkFunction function_; - int start_, stop_; -}; -#define BENCHMARK(benchmark_name) \ - Benchmark* Benchmark_ ## benchmark_name = \ - (new Benchmark(#benchmark_name, benchmark_name)) - -extern Benchmark* Benchmark_BM_UFlat; -extern Benchmark* Benchmark_BM_UValidate; -extern Benchmark* Benchmark_BM_ZFlat; - -void ResetBenchmarkTiming(); -void StartBenchmarkTiming(); -void StopBenchmarkTiming(); -void SetBenchmarkLabel(const string& str); -void SetBenchmarkBytesProcessed(int64 bytes); - -#ifdef HAVE_LIBZ - -// Object-oriented wrapper around zlib. -class ZLib { - public: - ZLib(); - ~ZLib(); - - // Wipe a ZLib object to a virgin state. This differs from Reset() - // in that it also breaks any state. - void Reinit(); - - // Call this to make a zlib buffer as good as new. Here's the only - // case where they differ: - // CompressChunk(a); CompressChunk(b); CompressChunkDone(); vs - // CompressChunk(a); Reset(); CompressChunk(b); CompressChunkDone(); - // You'll want to use Reset(), then, when you interrupt a compress - // (or uncompress) in the middle of a chunk and want to start over. - void Reset(); - - // According to the zlib manual, when you Compress, the destination - // buffer must have size at least src + .1%*src + 12. This function - // helps you calculate that. Augment this to account for a potential - // gzip header and footer, plus a few bytes of slack. - static int MinCompressbufSize(int uncompress_size) { - return uncompress_size + uncompress_size/1000 + 40; - } - - // Compresses the source buffer into the destination buffer. - // sourceLen is the byte length of the source buffer. - // Upon entry, destLen is the total size of the destination buffer, - // which must be of size at least MinCompressbufSize(sourceLen). - // Upon exit, destLen is the actual size of the compressed buffer. - // - // This function can be used to compress a whole file at once if the - // input file is mmap'ed. - // - // Returns Z_OK if success, Z_MEM_ERROR if there was not - // enough memory, Z_BUF_ERROR if there was not enough room in the - // output buffer. Note that if the output buffer is exactly the same - // size as the compressed result, we still return Z_BUF_ERROR. - // (check CL#1936076) - int Compress(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong sourceLen); - - // Uncompresses the source buffer into the destination buffer. - // The destination buffer must be long enough to hold the entire - // decompressed contents. - // - // Returns Z_OK on success, otherwise, it returns a zlib error code. - int Uncompress(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong sourceLen); - - // Uncompress data one chunk at a time -- ie you can call this - // more than once. To get this to work you need to call per-chunk - // and "done" routines. - // - // Returns Z_OK if success, Z_MEM_ERROR if there was not - // enough memory, Z_BUF_ERROR if there was not enough room in the - // output buffer. - - int UncompressAtMost(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen); - - // Checks gzip footer information, as needed. Mostly this just - // makes sure the checksums match. Whenever you call this, it - // will assume the last 8 bytes from the previous UncompressChunk - // call are the footer. Returns true iff everything looks ok. - bool UncompressChunkDone(); - - private: - int InflateInit(); // sets up the zlib inflate structure - int DeflateInit(); // sets up the zlib deflate structure - - // These init the zlib data structures for compressing/uncompressing - int CompressInit(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen); - int UncompressInit(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen); - // Initialization method to be called if we hit an error while - // uncompressing. On hitting an error, call this method before - // returning the error. - void UncompressErrorInit(); - - // Helper function for Compress - int CompressChunkOrAll(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong sourceLen, - int flush_mode); - int CompressAtMostOrAll(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen, - int flush_mode); - - // Likewise for UncompressAndUncompressChunk - int UncompressChunkOrAll(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong sourceLen, - int flush_mode); - - int UncompressAtMostOrAll(Bytef *dest, uLongf *destLen, - const Bytef *source, uLong *sourceLen, - int flush_mode); - - // Initialization method to be called if we hit an error while - // compressing. On hitting an error, call this method before - // returning the error. - void CompressErrorInit(); - - int compression_level_; // compression level - int window_bits_; // log base 2 of the window size used in compression - int mem_level_; // specifies the amount of memory to be used by - // compressor (1-9) - z_stream comp_stream_; // Zlib stream data structure - bool comp_init_; // True if we have initialized comp_stream_ - z_stream uncomp_stream_; // Zlib stream data structure - bool uncomp_init_; // True if we have initialized uncomp_stream_ - - // These are used only with chunked compression. - bool first_chunk_; // true if we need to emit headers with this chunk -}; - -#endif // HAVE_LIBZ - -} // namespace snappy - -DECLARE_bool(run_microbenchmarks); - -static void RunSpecifiedBenchmarks() { - if (!FLAGS_run_microbenchmarks) { - return; - } - - fprintf(stderr, "Running microbenchmarks.\n"); -#ifndef NDEBUG - fprintf(stderr, "WARNING: Compiled with assertions enabled, will be slow.\n"); -#endif -#ifndef __OPTIMIZE__ - fprintf(stderr, "WARNING: Compiled without optimization, will be slow.\n"); -#endif - fprintf(stderr, "Benchmark Time(ns) CPU(ns) Iterations\n"); - fprintf(stderr, "---------------------------------------------------\n"); - - snappy::Benchmark_BM_UFlat->Run(); - snappy::Benchmark_BM_UValidate->Run(); - snappy::Benchmark_BM_ZFlat->Run(); - - fprintf(stderr, "\n"); -} - -#ifndef HAVE_GTEST - -static inline int RUN_ALL_TESTS() { - fprintf(stderr, "Running correctness tests.\n"); - snappy::Test_CorruptedTest_VerifyCorrupted(); - snappy::Test_Snappy_SimpleTests(); - snappy::Test_Snappy_MaxBlowup(); - snappy::Test_Snappy_RandomData(); - snappy::Test_Snappy_FourByteOffset(); - snappy::Test_SnappyCorruption_TruncatedVarint(); - snappy::Test_SnappyCorruption_UnterminatedVarint(); - snappy::Test_Snappy_ReadPastEndOfBuffer(); - snappy::Test_Snappy_FindMatchLength(); - snappy::Test_Snappy_FindMatchLengthRandom(); - fprintf(stderr, "All tests passed.\n"); - - return 0; -} - -#endif // HAVE_GTEST - -// For main(). -namespace snappy { - -static void CompressFile(const char* fname); -static void UncompressFile(const char* fname); -static void MeasureFile(const char* fname); - -// Logging. - -#define LOG(level) LogMessage() -#define VLOG(level) true ? (void)0 : \ - snappy::LogMessageVoidify() & snappy::LogMessage() - -class LogMessage { - public: - LogMessage() { } - ~LogMessage() { - cerr << endl; - } - - LogMessage& operator<<(const std::string& msg) { - cerr << msg; - return *this; - } - LogMessage& operator<<(int x) { - cerr << x; - return *this; - } -}; - -// Asserts, both versions activated in debug mode only, -// and ones that are always active. - -#define CRASH_UNLESS(condition) \ - PREDICT_TRUE(condition) ? (void)0 : \ - snappy::LogMessageVoidify() & snappy::LogMessageCrash() - -class LogMessageCrash : public LogMessage { - public: - LogMessageCrash() { } - ~LogMessageCrash() { - cerr << endl; - abort(); - } -}; - -// This class is used to explicitly ignore values in the conditional -// logging macros. This avoids compiler warnings like "value computed -// is not used" and "statement has no effect". - -class LogMessageVoidify { - public: - LogMessageVoidify() { } - // This has to be an operator with a precedence lower than << but - // higher than ?: - void operator&(const LogMessage&) { } -}; - -#define CHECK(cond) CRASH_UNLESS(cond) -#define CHECK_LE(a, b) CRASH_UNLESS((a) <= (b)) -#define CHECK_GE(a, b) CRASH_UNLESS((a) >= (b)) -#define CHECK_EQ(a, b) CRASH_UNLESS((a) == (b)) -#define CHECK_NE(a, b) CRASH_UNLESS((a) != (b)) -#define CHECK_LT(a, b) CRASH_UNLESS((a) < (b)) -#define CHECK_GT(a, b) CRASH_UNLESS((a) > (b)) - -} // namespace - -using snappy::CompressFile; -using snappy::UncompressFile; -using snappy::MeasureFile; - -#endif // UTIL_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_ diff --git a/snappy-1.1.0/snappy.cc b/snappy-1.1.0/snappy.cc deleted file mode 100644 index 1230321..0000000 --- a/snappy-1.1.0/snappy.cc +++ /dev/null @@ -1,1119 +0,0 @@ -// Copyright 2005 Google Inc. All Rights Reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include "snappy.h" -#include "snappy-internal.h" -#include "snappy-sinksource.h" - -#include - -#include -#include -#include - - -namespace snappy { - -// Any hash function will produce a valid compressed bitstream, but a good -// hash function reduces the number of collisions and thus yields better -// compression for compressible input, and more speed for incompressible -// input. Of course, it doesn't hurt if the hash function is reasonably fast -// either, as it gets called a lot. -static inline uint32 HashBytes(uint32 bytes, int shift) { - uint32 kMul = 0x1e35a7bd; - return (bytes * kMul) >> shift; -} -static inline uint32 Hash(const char* p, int shift) { - return HashBytes(UNALIGNED_LOAD32(p), shift); -} - -size_t MaxCompressedLength(size_t source_len) { - // Compressed data can be defined as: - // compressed := item* literal* - // item := literal* copy - // - // The trailing literal sequence has a space blowup of at most 62/60 - // since a literal of length 60 needs one tag byte + one extra byte - // for length information. - // - // Item blowup is trickier to measure. Suppose the "copy" op copies - // 4 bytes of data. Because of a special check in the encoding code, - // we produce a 4-byte copy only if the offset is < 65536. Therefore - // the copy op takes 3 bytes to encode, and this type of item leads - // to at most the 62/60 blowup for representing literals. - // - // Suppose the "copy" op copies 5 bytes of data. If the offset is big - // enough, it will take 5 bytes to encode the copy op. Therefore the - // worst case here is a one-byte literal followed by a five-byte copy. - // I.e., 6 bytes of input turn into 7 bytes of "compressed" data. - // - // This last factor dominates the blowup, so the final estimate is: - return 32 + source_len + source_len/6; -} - -enum { - LITERAL = 0, - COPY_1_BYTE_OFFSET = 1, // 3 bit length + 3 bits of offset in opcode - COPY_2_BYTE_OFFSET = 2, - COPY_4_BYTE_OFFSET = 3 -}; - -// Copy "len" bytes from "src" to "op", one byte at a time. Used for -// handling COPY operations where the input and output regions may -// overlap. For example, suppose: -// src == "ab" -// op == src + 2 -// len == 20 -// After IncrementalCopy(src, op, len), the result will have -// eleven copies of "ab" -// ababababababababababab -// Note that this does not match the semantics of either memcpy() -// or memmove(). -static inline void IncrementalCopy(const char* src, char* op, int len) { - assert(len > 0); - do { - *op++ = *src++; - } while (--len > 0); -} - -// Equivalent to IncrementalCopy except that it can write up to ten extra -// bytes after the end of the copy, and that it is faster. -// -// The main part of this loop is a simple copy of eight bytes at a time until -// we've copied (at least) the requested amount of bytes. However, if op and -// src are less than eight bytes apart (indicating a repeating pattern of -// length < 8), we first need to expand the pattern in order to get the correct -// results. For instance, if the buffer looks like this, with the eight-byte -// and patterns marked as intervals: -// -// abxxxxxxxxxxxx -// [------] src -// [------] op -// -// a single eight-byte copy from to will repeat the pattern once, -// after which we can move two bytes without moving : -// -// ababxxxxxxxxxx -// [------] src -// [------] op -// -// and repeat the exercise until the two no longer overlap. -// -// This allows us to do very well in the special case of one single byte -// repeated many times, without taking a big hit for more general cases. -// -// The worst case of extra writing past the end of the match occurs when -// op - src == 1 and len == 1; the last copy will read from byte positions -// [0..7] and write to [4..11], whereas it was only supposed to write to -// position 1. Thus, ten excess bytes. - -namespace { - -const int kMaxIncrementCopyOverflow = 10; - -} // namespace - -static inline void IncrementalCopyFastPath(const char* src, char* op, int len) { - while (op - src < 8) { - UnalignedCopy64(src, op); - len -= op - src; - op += op - src; - } - while (len > 0) { - UnalignedCopy64(src, op); - src += 8; - op += 8; - len -= 8; - } -} - -static inline char* EmitLiteral(char* op, - const char* literal, - int len, - bool allow_fast_path) { - int n = len - 1; // Zero-length literals are disallowed - if (n < 60) { - // Fits in tag byte - *op++ = LITERAL | (n << 2); - - // The vast majority of copies are below 16 bytes, for which a - // call to memcpy is overkill. This fast path can sometimes - // copy up to 15 bytes too much, but that is okay in the - // main loop, since we have a bit to go on for both sides: - // - // - The input will always have kInputMarginBytes = 15 extra - // available bytes, as long as we're in the main loop, and - // if not, allow_fast_path = false. - // - The output will always have 32 spare bytes (see - // MaxCompressedLength). - if (allow_fast_path && len <= 16) { - UnalignedCopy64(literal, op); - UnalignedCopy64(literal + 8, op + 8); - return op + len; - } - } else { - // Encode in upcoming bytes - char* base = op; - int count = 0; - op++; - while (n > 0) { - *op++ = n & 0xff; - n >>= 8; - count++; - } - assert(count >= 1); - assert(count <= 4); - *base = LITERAL | ((59+count) << 2); - } - memcpy(op, literal, len); - return op + len; -} - -static inline char* EmitCopyLessThan64(char* op, size_t offset, int len) { - assert(len <= 64); - assert(len >= 4); - assert(offset < 65536); - - if ((len < 12) && (offset < 2048)) { - size_t len_minus_4 = len - 4; - assert(len_minus_4 < 8); // Must fit in 3 bits - *op++ = COPY_1_BYTE_OFFSET + ((len_minus_4) << 2) + ((offset >> 8) << 5); - *op++ = offset & 0xff; - } else { - *op++ = COPY_2_BYTE_OFFSET + ((len-1) << 2); - LittleEndian::Store16(op, offset); - op += 2; - } - return op; -} - -static inline char* EmitCopy(char* op, size_t offset, int len) { - // Emit 64 byte copies but make sure to keep at least four bytes reserved - while (len >= 68) { - op = EmitCopyLessThan64(op, offset, 64); - len -= 64; - } - - // Emit an extra 60 byte copy if have too much data to fit in one copy - if (len > 64) { - op = EmitCopyLessThan64(op, offset, 60); - len -= 60; - } - - // Emit remainder - op = EmitCopyLessThan64(op, offset, len); - return op; -} - - -bool GetUncompressedLength(const char* start, size_t n, size_t* result) { - uint32 v = 0; - const char* limit = start + n; - if (Varint::Parse32WithLimit(start, limit, &v) != NULL) { - *result = v; - return true; - } else { - return false; - } -} - -namespace internal { -uint16* WorkingMemory::GetHashTable(size_t input_size, int* table_size) { - // Use smaller hash table when input.size() is smaller, since we - // fill the table, incurring O(hash table size) overhead for - // compression, and if the input is short, we won't need that - // many hash table entries anyway. - assert(kMaxHashTableSize >= 256); - size_t htsize = 256; - while (htsize < kMaxHashTableSize && htsize < input_size) { - htsize <<= 1; - } - - uint16* table; - if (htsize <= ARRAYSIZE(small_table_)) { - table = small_table_; - } else { - if (large_table_ == NULL) { - large_table_ = new uint16[kMaxHashTableSize]; - } - table = large_table_; - } - - *table_size = htsize; - memset(table, 0, htsize * sizeof(*table)); - return table; -} -} // end namespace internal - -// For 0 <= offset <= 4, GetUint32AtOffset(GetEightBytesAt(p), offset) will -// equal UNALIGNED_LOAD32(p + offset). Motivation: On x86-64 hardware we have -// empirically found that overlapping loads such as -// UNALIGNED_LOAD32(p) ... UNALIGNED_LOAD32(p+1) ... UNALIGNED_LOAD32(p+2) -// are slower than UNALIGNED_LOAD64(p) followed by shifts and casts to uint32. -// -// We have different versions for 64- and 32-bit; ideally we would avoid the -// two functions and just inline the UNALIGNED_LOAD64 call into -// GetUint32AtOffset, but GCC (at least not as of 4.6) is seemingly not clever -// enough to avoid loading the value multiple times then. For 64-bit, the load -// is done when GetEightBytesAt() is called, whereas for 32-bit, the load is -// done at GetUint32AtOffset() time. - -#ifdef ARCH_K8 - -typedef uint64 EightBytesReference; - -static inline EightBytesReference GetEightBytesAt(const char* ptr) { - return UNALIGNED_LOAD64(ptr); -} - -static inline uint32 GetUint32AtOffset(uint64 v, int offset) { - assert(offset >= 0); - assert(offset <= 4); - return v >> (LittleEndian::IsLittleEndian() ? 8 * offset : 32 - 8 * offset); -} - -#else - -typedef const char* EightBytesReference; - -static inline EightBytesReference GetEightBytesAt(const char* ptr) { - return ptr; -} - -static inline uint32 GetUint32AtOffset(const char* v, int offset) { - assert(offset >= 0); - assert(offset <= 4); - return UNALIGNED_LOAD32(v + offset); -} - -#endif - -// Flat array compression that does not emit the "uncompressed length" -// prefix. Compresses "input" string to the "*op" buffer. -// -// REQUIRES: "input" is at most "kBlockSize" bytes long. -// REQUIRES: "op" points to an array of memory that is at least -// "MaxCompressedLength(input.size())" in size. -// REQUIRES: All elements in "table[0..table_size-1]" are initialized to zero. -// REQUIRES: "table_size" is a power of two -// -// Returns an "end" pointer into "op" buffer. -// "end - op" is the compressed size of "input". -namespace internal { -char* CompressFragment(const char* input, - size_t input_size, - char* op, - uint16* table, - const int table_size) { - // "ip" is the input pointer, and "op" is the output pointer. - const char* ip = input; - assert(input_size <= kBlockSize); - assert((table_size & (table_size - 1)) == 0); // table must be power of two - const int shift = 32 - Bits::Log2Floor(table_size); - assert(static_cast(kuint32max >> shift) == table_size - 1); - const char* ip_end = input + input_size; - const char* base_ip = ip; - // Bytes in [next_emit, ip) will be emitted as literal bytes. Or - // [next_emit, ip_end) after the main loop. - const char* next_emit = ip; - - const size_t kInputMarginBytes = 15; - if (PREDICT_TRUE(input_size >= kInputMarginBytes)) { - const char* ip_limit = input + input_size - kInputMarginBytes; - - for (uint32 next_hash = Hash(++ip, shift); ; ) { - assert(next_emit < ip); - // The body of this loop calls EmitLiteral once and then EmitCopy one or - // more times. (The exception is that when we're close to exhausting - // the input we goto emit_remainder.) - // - // In the first iteration of this loop we're just starting, so - // there's nothing to copy, so calling EmitLiteral once is - // necessary. And we only start a new iteration when the - // current iteration has determined that a call to EmitLiteral will - // precede the next call to EmitCopy (if any). - // - // Step 1: Scan forward in the input looking for a 4-byte-long match. - // If we get close to exhausting the input then goto emit_remainder. - // - // Heuristic match skipping: If 32 bytes are scanned with no matches - // found, start looking only at every other byte. If 32 more bytes are - // scanned, look at every third byte, etc.. When a match is found, - // immediately go back to looking at every byte. This is a small loss - // (~5% performance, ~0.1% density) for compressible data due to more - // bookkeeping, but for non-compressible data (such as JPEG) it's a huge - // win since the compressor quickly "realizes" the data is incompressible - // and doesn't bother looking for matches everywhere. - // - // The "skip" variable keeps track of how many bytes there are since the - // last match; dividing it by 32 (ie. right-shifting by five) gives the - // number of bytes to move ahead for each iteration. - uint32 skip = 32; - - const char* next_ip = ip; - const char* candidate; - do { - ip = next_ip; - uint32 hash = next_hash; - assert(hash == Hash(ip, shift)); - uint32 bytes_between_hash_lookups = skip++ >> 5; - next_ip = ip + bytes_between_hash_lookups; - if (PREDICT_FALSE(next_ip > ip_limit)) { - goto emit_remainder; - } - next_hash = Hash(next_ip, shift); - candidate = base_ip + table[hash]; - assert(candidate >= base_ip); - assert(candidate < ip); - - table[hash] = ip - base_ip; - } while (PREDICT_TRUE(UNALIGNED_LOAD32(ip) != - UNALIGNED_LOAD32(candidate))); - - // Step 2: A 4-byte match has been found. We'll later see if more - // than 4 bytes match. But, prior to the match, input - // bytes [next_emit, ip) are unmatched. Emit them as "literal bytes." - assert(next_emit + 16 <= ip_end); - op = EmitLiteral(op, next_emit, ip - next_emit, true); - - // Step 3: Call EmitCopy, and then see if another EmitCopy could - // be our next move. Repeat until we find no match for the - // input immediately after what was consumed by the last EmitCopy call. - // - // If we exit this loop normally then we need to call EmitLiteral next, - // though we don't yet know how big the literal will be. We handle that - // by proceeding to the next iteration of the main loop. We also can exit - // this loop via goto if we get close to exhausting the input. - EightBytesReference input_bytes; - uint32 candidate_bytes = 0; - - do { - // We have a 4-byte match at ip, and no need to emit any - // "literal bytes" prior to ip. - const char* base = ip; - int matched = 4 + FindMatchLength(candidate + 4, ip + 4, ip_end); - ip += matched; - size_t offset = base - candidate; - assert(0 == memcmp(base, candidate, matched)); - op = EmitCopy(op, offset, matched); - // We could immediately start working at ip now, but to improve - // compression we first update table[Hash(ip - 1, ...)]. - const char* insert_tail = ip - 1; - next_emit = ip; - if (PREDICT_FALSE(ip >= ip_limit)) { - goto emit_remainder; - } - input_bytes = GetEightBytesAt(insert_tail); - uint32 prev_hash = HashBytes(GetUint32AtOffset(input_bytes, 0), shift); - table[prev_hash] = ip - base_ip - 1; - uint32 cur_hash = HashBytes(GetUint32AtOffset(input_bytes, 1), shift); - candidate = base_ip + table[cur_hash]; - candidate_bytes = UNALIGNED_LOAD32(candidate); - table[cur_hash] = ip - base_ip; - } while (GetUint32AtOffset(input_bytes, 1) == candidate_bytes); - - next_hash = HashBytes(GetUint32AtOffset(input_bytes, 2), shift); - ++ip; - } - } - - emit_remainder: - // Emit the remaining bytes as a literal - if (next_emit < ip_end) { - op = EmitLiteral(op, next_emit, ip_end - next_emit, false); - } - - return op; -} -} // end namespace internal - -// Signature of output types needed by decompression code. -// The decompression code is templatized on a type that obeys this -// signature so that we do not pay virtual function call overhead in -// the middle of a tight decompression loop. -// -// class DecompressionWriter { -// public: -// // Called before decompression -// void SetExpectedLength(size_t length); -// -// // Called after decompression -// bool CheckLength() const; -// -// // Called repeatedly during decompression -// bool Append(const char* ip, size_t length); -// bool AppendFromSelf(uint32 offset, size_t length); -// -// // The difference between TryFastAppend and Append is that TryFastAppend -// // is allowed to read up to bytes from the input buffer, -// // whereas Append is allowed to read . -// // -// // Also, TryFastAppend is allowed to return false, declining the append, -// // without it being a fatal error -- just "return false" would be -// // a perfectly legal implementation of TryFastAppend. The intention -// // is for TryFastAppend to allow a fast path in the common case of -// // a small append. -// // -// // NOTE(user): TryFastAppend must always return decline (return false) -// // if is 61 or more, as in this case the literal length is not -// // decoded fully. In practice, this should not be a big problem, -// // as it is unlikely that one would implement a fast path accepting -// // this much data. -// bool TryFastAppend(const char* ip, size_t available, size_t length); -// }; - -// ----------------------------------------------------------------------- -// Lookup table for decompression code. Generated by ComputeTable() below. -// ----------------------------------------------------------------------- - -// Mapping from i in range [0,4] to a mask to extract the bottom 8*i bits -static const uint32 wordmask[] = { - 0u, 0xffu, 0xffffu, 0xffffffu, 0xffffffffu -}; - -// Data stored per entry in lookup table: -// Range Bits-used Description -// ------------------------------------ -// 1..64 0..7 Literal/copy length encoded in opcode byte -// 0..7 8..10 Copy offset encoded in opcode byte / 256 -// 0..4 11..13 Extra bytes after opcode -// -// We use eight bits for the length even though 7 would have sufficed -// because of efficiency reasons: -// (1) Extracting a byte is faster than a bit-field -// (2) It properly aligns copy offset so we do not need a <<8 -static const uint16 char_table[256] = { - 0x0001, 0x0804, 0x1001, 0x2001, 0x0002, 0x0805, 0x1002, 0x2002, - 0x0003, 0x0806, 0x1003, 0x2003, 0x0004, 0x0807, 0x1004, 0x2004, - 0x0005, 0x0808, 0x1005, 0x2005, 0x0006, 0x0809, 0x1006, 0x2006, - 0x0007, 0x080a, 0x1007, 0x2007, 0x0008, 0x080b, 0x1008, 0x2008, - 0x0009, 0x0904, 0x1009, 0x2009, 0x000a, 0x0905, 0x100a, 0x200a, - 0x000b, 0x0906, 0x100b, 0x200b, 0x000c, 0x0907, 0x100c, 0x200c, - 0x000d, 0x0908, 0x100d, 0x200d, 0x000e, 0x0909, 0x100e, 0x200e, - 0x000f, 0x090a, 0x100f, 0x200f, 0x0010, 0x090b, 0x1010, 0x2010, - 0x0011, 0x0a04, 0x1011, 0x2011, 0x0012, 0x0a05, 0x1012, 0x2012, - 0x0013, 0x0a06, 0x1013, 0x2013, 0x0014, 0x0a07, 0x1014, 0x2014, - 0x0015, 0x0a08, 0x1015, 0x2015, 0x0016, 0x0a09, 0x1016, 0x2016, - 0x0017, 0x0a0a, 0x1017, 0x2017, 0x0018, 0x0a0b, 0x1018, 0x2018, - 0x0019, 0x0b04, 0x1019, 0x2019, 0x001a, 0x0b05, 0x101a, 0x201a, - 0x001b, 0x0b06, 0x101b, 0x201b, 0x001c, 0x0b07, 0x101c, 0x201c, - 0x001d, 0x0b08, 0x101d, 0x201d, 0x001e, 0x0b09, 0x101e, 0x201e, - 0x001f, 0x0b0a, 0x101f, 0x201f, 0x0020, 0x0b0b, 0x1020, 0x2020, - 0x0021, 0x0c04, 0x1021, 0x2021, 0x0022, 0x0c05, 0x1022, 0x2022, - 0x0023, 0x0c06, 0x1023, 0x2023, 0x0024, 0x0c07, 0x1024, 0x2024, - 0x0025, 0x0c08, 0x1025, 0x2025, 0x0026, 0x0c09, 0x1026, 0x2026, - 0x0027, 0x0c0a, 0x1027, 0x2027, 0x0028, 0x0c0b, 0x1028, 0x2028, - 0x0029, 0x0d04, 0x1029, 0x2029, 0x002a, 0x0d05, 0x102a, 0x202a, - 0x002b, 0x0d06, 0x102b, 0x202b, 0x002c, 0x0d07, 0x102c, 0x202c, - 0x002d, 0x0d08, 0x102d, 0x202d, 0x002e, 0x0d09, 0x102e, 0x202e, - 0x002f, 0x0d0a, 0x102f, 0x202f, 0x0030, 0x0d0b, 0x1030, 0x2030, - 0x0031, 0x0e04, 0x1031, 0x2031, 0x0032, 0x0e05, 0x1032, 0x2032, - 0x0033, 0x0e06, 0x1033, 0x2033, 0x0034, 0x0e07, 0x1034, 0x2034, - 0x0035, 0x0e08, 0x1035, 0x2035, 0x0036, 0x0e09, 0x1036, 0x2036, - 0x0037, 0x0e0a, 0x1037, 0x2037, 0x0038, 0x0e0b, 0x1038, 0x2038, - 0x0039, 0x0f04, 0x1039, 0x2039, 0x003a, 0x0f05, 0x103a, 0x203a, - 0x003b, 0x0f06, 0x103b, 0x203b, 0x003c, 0x0f07, 0x103c, 0x203c, - 0x0801, 0x0f08, 0x103d, 0x203d, 0x1001, 0x0f09, 0x103e, 0x203e, - 0x1801, 0x0f0a, 0x103f, 0x203f, 0x2001, 0x0f0b, 0x1040, 0x2040 -}; - -// In debug mode, allow optional computation of the table at startup. -// Also, check that the decompression table is correct. -#ifndef NDEBUG -DEFINE_bool(snappy_dump_decompression_table, false, - "If true, we print the decompression table at startup."); - -static uint16 MakeEntry(unsigned int extra, - unsigned int len, - unsigned int copy_offset) { - // Check that all of the fields fit within the allocated space - assert(extra == (extra & 0x7)); // At most 3 bits - assert(copy_offset == (copy_offset & 0x7)); // At most 3 bits - assert(len == (len & 0x7f)); // At most 7 bits - return len | (copy_offset << 8) | (extra << 11); -} - -static void ComputeTable() { - uint16 dst[256]; - - // Place invalid entries in all places to detect missing initialization - int assigned = 0; - for (int i = 0; i < 256; i++) { - dst[i] = 0xffff; - } - - // Small LITERAL entries. We store (len-1) in the top 6 bits. - for (unsigned int len = 1; len <= 60; len++) { - dst[LITERAL | ((len-1) << 2)] = MakeEntry(0, len, 0); - assigned++; - } - - // Large LITERAL entries. We use 60..63 in the high 6 bits to - // encode the number of bytes of length info that follow the opcode. - for (unsigned int extra_bytes = 1; extra_bytes <= 4; extra_bytes++) { - // We set the length field in the lookup table to 1 because extra - // bytes encode len-1. - dst[LITERAL | ((extra_bytes+59) << 2)] = MakeEntry(extra_bytes, 1, 0); - assigned++; - } - - // COPY_1_BYTE_OFFSET. - // - // The tag byte in the compressed data stores len-4 in 3 bits, and - // offset/256 in 5 bits. offset%256 is stored in the next byte. - // - // This format is used for length in range [4..11] and offset in - // range [0..2047] - for (unsigned int len = 4; len < 12; len++) { - for (unsigned int offset = 0; offset < 2048; offset += 256) { - dst[COPY_1_BYTE_OFFSET | ((len-4)<<2) | ((offset>>8)<<5)] = - MakeEntry(1, len, offset>>8); - assigned++; - } - } - - // COPY_2_BYTE_OFFSET. - // Tag contains len-1 in top 6 bits, and offset in next two bytes. - for (unsigned int len = 1; len <= 64; len++) { - dst[COPY_2_BYTE_OFFSET | ((len-1)<<2)] = MakeEntry(2, len, 0); - assigned++; - } - - // COPY_4_BYTE_OFFSET. - // Tag contents len-1 in top 6 bits, and offset in next four bytes. - for (unsigned int len = 1; len <= 64; len++) { - dst[COPY_4_BYTE_OFFSET | ((len-1)<<2)] = MakeEntry(4, len, 0); - assigned++; - } - - // Check that each entry was initialized exactly once. - if (assigned != 256) { - fprintf(stderr, "ComputeTable: assigned only %d of 256\n", assigned); - abort(); - } - for (int i = 0; i < 256; i++) { - if (dst[i] == 0xffff) { - fprintf(stderr, "ComputeTable: did not assign byte %d\n", i); - abort(); - } - } - - if (FLAGS_snappy_dump_decompression_table) { - printf("static const uint16 char_table[256] = {\n "); - for (int i = 0; i < 256; i++) { - printf("0x%04x%s", - dst[i], - ((i == 255) ? "\n" : (((i%8) == 7) ? ",\n " : ", "))); - } - printf("};\n"); - } - - // Check that computed table matched recorded table - for (int i = 0; i < 256; i++) { - if (dst[i] != char_table[i]) { - fprintf(stderr, "ComputeTable: byte %d: computed (%x), expect (%x)\n", - i, static_cast(dst[i]), static_cast(char_table[i])); - abort(); - } - } -} -#endif /* !NDEBUG */ - -// Helper class for decompression -class SnappyDecompressor { - private: - Source* reader_; // Underlying source of bytes to decompress - const char* ip_; // Points to next buffered byte - const char* ip_limit_; // Points just past buffered bytes - uint32 peeked_; // Bytes peeked from reader (need to skip) - bool eof_; // Hit end of input without an error? - char scratch_[5]; // Temporary buffer for PeekFast() boundaries - - // Ensure that all of the tag metadata for the next tag is available - // in [ip_..ip_limit_-1]. Also ensures that [ip,ip+4] is readable even - // if (ip_limit_ - ip_ < 5). - // - // Returns true on success, false on error or end of input. - bool RefillTag(); - - public: - explicit SnappyDecompressor(Source* reader) - : reader_(reader), - ip_(NULL), - ip_limit_(NULL), - peeked_(0), - eof_(false) { - } - - ~SnappyDecompressor() { - // Advance past any bytes we peeked at from the reader - reader_->Skip(peeked_); - } - - // Returns true iff we have hit the end of the input without an error. - bool eof() const { - return eof_; - } - - // Read the uncompressed length stored at the start of the compressed data. - // On succcess, stores the length in *result and returns true. - // On failure, returns false. - bool ReadUncompressedLength(uint32* result) { - assert(ip_ == NULL); // Must not have read anything yet - // Length is encoded in 1..5 bytes - *result = 0; - uint32 shift = 0; - while (true) { - if (shift >= 32) return false; - size_t n; - const char* ip = reader_->Peek(&n); - if (n == 0) return false; - const unsigned char c = *(reinterpret_cast(ip)); - reader_->Skip(1); - *result |= static_cast(c & 0x7f) << shift; - if (c < 128) { - break; - } - shift += 7; - } - return true; - } - - // Process the next item found in the input. - // Returns true if successful, false on error or end of input. - template - void DecompressAllTags(Writer* writer) { - const char* ip = ip_; - - // We could have put this refill fragment only at the beginning of the loop. - // However, duplicating it at the end of each branch gives the compiler more - // scope to optimize the expression based on the local - // context, which overall increases speed. - #define MAYBE_REFILL() \ - if (ip_limit_ - ip < 5) { \ - ip_ = ip; \ - if (!RefillTag()) return; \ - ip = ip_; \ - } - - MAYBE_REFILL(); - for ( ;; ) { - const unsigned char c = *(reinterpret_cast(ip++)); - - if ((c & 0x3) == LITERAL) { - size_t literal_length = (c >> 2) + 1u; - if (writer->TryFastAppend(ip, ip_limit_ - ip, literal_length)) { - assert(literal_length < 61); - ip += literal_length; - MAYBE_REFILL(); - continue; - } - if (PREDICT_FALSE(literal_length >= 61)) { - // Long literal. - const size_t literal_length_length = literal_length - 60; - literal_length = - (LittleEndian::Load32(ip) & wordmask[literal_length_length]) + 1; - ip += literal_length_length; - } - - size_t avail = ip_limit_ - ip; - while (avail < literal_length) { - if (!writer->Append(ip, avail)) return; - literal_length -= avail; - reader_->Skip(peeked_); - size_t n; - ip = reader_->Peek(&n); - avail = n; - peeked_ = avail; - if (avail == 0) return; // Premature end of input - ip_limit_ = ip + avail; - } - if (!writer->Append(ip, literal_length)) { - return; - } - ip += literal_length; - MAYBE_REFILL(); - } else { - const uint32 entry = char_table[c]; - const uint32 trailer = LittleEndian::Load32(ip) & wordmask[entry >> 11]; - const uint32 length = entry & 0xff; - ip += entry >> 11; - - // copy_offset/256 is encoded in bits 8..10. By just fetching - // those bits, we get copy_offset (since the bit-field starts at - // bit 8). - const uint32 copy_offset = entry & 0x700; - if (!writer->AppendFromSelf(copy_offset + trailer, length)) { - return; - } - MAYBE_REFILL(); - } - } - -#undef MAYBE_REFILL - } -}; - -bool SnappyDecompressor::RefillTag() { - const char* ip = ip_; - if (ip == ip_limit_) { - // Fetch a new fragment from the reader - reader_->Skip(peeked_); // All peeked bytes are used up - size_t n; - ip = reader_->Peek(&n); - peeked_ = n; - if (n == 0) { - eof_ = true; - return false; - } - ip_limit_ = ip + n; - } - - // Read the tag character - assert(ip < ip_limit_); - const unsigned char c = *(reinterpret_cast(ip)); - const uint32 entry = char_table[c]; - const uint32 needed = (entry >> 11) + 1; // +1 byte for 'c' - assert(needed <= sizeof(scratch_)); - - // Read more bytes from reader if needed - uint32 nbuf = ip_limit_ - ip; - if (nbuf < needed) { - // Stitch together bytes from ip and reader to form the word - // contents. We store the needed bytes in "scratch_". They - // will be consumed immediately by the caller since we do not - // read more than we need. - memmove(scratch_, ip, nbuf); - reader_->Skip(peeked_); // All peeked bytes are used up - peeked_ = 0; - while (nbuf < needed) { - size_t length; - const char* src = reader_->Peek(&length); - if (length == 0) return false; - uint32 to_add = min(needed - nbuf, length); - memcpy(scratch_ + nbuf, src, to_add); - nbuf += to_add; - reader_->Skip(to_add); - } - assert(nbuf == needed); - ip_ = scratch_; - ip_limit_ = scratch_ + needed; - } else if (nbuf < 5) { - // Have enough bytes, but move into scratch_ so that we do not - // read past end of input - memmove(scratch_, ip, nbuf); - reader_->Skip(peeked_); // All peeked bytes are used up - peeked_ = 0; - ip_ = scratch_; - ip_limit_ = scratch_ + nbuf; - } else { - // Pass pointer to buffer returned by reader_. - ip_ = ip; - } - return true; -} - -template -static bool InternalUncompress(Source* r, - Writer* writer, - uint32 max_len) { - // Read the uncompressed length from the front of the compressed input - SnappyDecompressor decompressor(r); - uint32 uncompressed_len = 0; - if (!decompressor.ReadUncompressedLength(&uncompressed_len)) return false; - return InternalUncompressAllTags( - &decompressor, writer, uncompressed_len, max_len); -} - -template -static bool InternalUncompressAllTags(SnappyDecompressor* decompressor, - Writer* writer, - uint32 uncompressed_len, - uint32 max_len) { - // Protect against possible DoS attack - if (static_cast(uncompressed_len) > max_len) { - return false; - } - - writer->SetExpectedLength(uncompressed_len); - - // Process the entire input - decompressor->DecompressAllTags(writer); - return (decompressor->eof() && writer->CheckLength()); -} - -bool GetUncompressedLength(Source* source, uint32* result) { - SnappyDecompressor decompressor(source); - return decompressor.ReadUncompressedLength(result); -} - -size_t Compress(Source* reader, Sink* writer) { - size_t written = 0; - size_t N = reader->Available(); - char ulength[Varint::kMax32]; - char* p = Varint::Encode32(ulength, N); - writer->Append(ulength, p-ulength); - written += (p - ulength); - - internal::WorkingMemory wmem; - char* scratch = NULL; - char* scratch_output = NULL; - - while (N > 0) { - // Get next block to compress (without copying if possible) - size_t fragment_size; - const char* fragment = reader->Peek(&fragment_size); - assert(fragment_size != 0); // premature end of input - const size_t num_to_read = min(N, kBlockSize); - size_t bytes_read = fragment_size; - - size_t pending_advance = 0; - if (bytes_read >= num_to_read) { - // Buffer returned by reader is large enough - pending_advance = num_to_read; - fragment_size = num_to_read; - } else { - // Read into scratch buffer - if (scratch == NULL) { - // If this is the last iteration, we want to allocate N bytes - // of space, otherwise the max possible kBlockSize space. - // num_to_read contains exactly the correct value - scratch = new char[num_to_read]; - } - memcpy(scratch, fragment, bytes_read); - reader->Skip(bytes_read); - - while (bytes_read < num_to_read) { - fragment = reader->Peek(&fragment_size); - size_t n = min(fragment_size, num_to_read - bytes_read); - memcpy(scratch + bytes_read, fragment, n); - bytes_read += n; - reader->Skip(n); - } - assert(bytes_read == num_to_read); - fragment = scratch; - fragment_size = num_to_read; - } - assert(fragment_size == num_to_read); - - // Get encoding table for compression - int table_size; - uint16* table = wmem.GetHashTable(num_to_read, &table_size); - - // Compress input_fragment and append to dest - const int max_output = MaxCompressedLength(num_to_read); - - // Need a scratch buffer for the output, in case the byte sink doesn't - // have room for us directly. - if (scratch_output == NULL) { - scratch_output = new char[max_output]; - } else { - // Since we encode kBlockSize regions followed by a region - // which is <= kBlockSize in length, a previously allocated - // scratch_output[] region is big enough for this iteration. - } - char* dest = writer->GetAppendBuffer(max_output, scratch_output); - char* end = internal::CompressFragment(fragment, fragment_size, - dest, table, table_size); - writer->Append(dest, end - dest); - written += (end - dest); - - N -= num_to_read; - reader->Skip(pending_advance); - } - - delete[] scratch; - delete[] scratch_output; - - return written; -} - -// ----------------------------------------------------------------------- -// Flat array interfaces -// ----------------------------------------------------------------------- - -// A type that writes to a flat array. -// Note that this is not a "ByteSink", but a type that matches the -// Writer template argument to SnappyDecompressor::DecompressAllTags(). -class SnappyArrayWriter { - private: - char* base_; - char* op_; - char* op_limit_; - - public: - inline explicit SnappyArrayWriter(char* dst) - : base_(dst), - op_(dst) { - } - - inline void SetExpectedLength(size_t len) { - op_limit_ = op_ + len; - } - - inline bool CheckLength() const { - return op_ == op_limit_; - } - - inline bool Append(const char* ip, size_t len) { - char* op = op_; - const size_t space_left = op_limit_ - op; - if (space_left < len) { - return false; - } - memcpy(op, ip, len); - op_ = op + len; - return true; - } - - inline bool TryFastAppend(const char* ip, size_t available, size_t len) { - char* op = op_; - const size_t space_left = op_limit_ - op; - if (len <= 16 && available >= 16 && space_left >= 16) { - // Fast path, used for the majority (about 95%) of invocations. - UnalignedCopy64(ip, op); - UnalignedCopy64(ip + 8, op + 8); - op_ = op + len; - return true; - } else { - return false; - } - } - - inline bool AppendFromSelf(size_t offset, size_t len) { - char* op = op_; - const size_t space_left = op_limit_ - op; - - if (op - base_ <= offset - 1u) { // -1u catches offset==0 - return false; - } - if (len <= 16 && offset >= 8 && space_left >= 16) { - // Fast path, used for the majority (70-80%) of dynamic invocations. - UnalignedCopy64(op - offset, op); - UnalignedCopy64(op - offset + 8, op + 8); - } else { - if (space_left >= len + kMaxIncrementCopyOverflow) { - IncrementalCopyFastPath(op - offset, op, len); - } else { - if (space_left < len) { - return false; - } - IncrementalCopy(op - offset, op, len); - } - } - - op_ = op + len; - return true; - } -}; - -bool RawUncompress(const char* compressed, size_t n, char* uncompressed) { - ByteArraySource reader(compressed, n); - return RawUncompress(&reader, uncompressed); -} - -bool RawUncompress(Source* compressed, char* uncompressed) { - SnappyArrayWriter output(uncompressed); - return InternalUncompress(compressed, &output, kuint32max); -} - -bool Uncompress(const char* compressed, size_t n, string* uncompressed) { - size_t ulength; - if (!GetUncompressedLength(compressed, n, &ulength)) { - return false; - } - // Protect against possible DoS attack - if ((static_cast(ulength) + uncompressed->size()) > - uncompressed->max_size()) { - return false; - } - STLStringResizeUninitialized(uncompressed, ulength); - return RawUncompress(compressed, n, string_as_array(uncompressed)); -} - - -// A Writer that drops everything on the floor and just does validation -class SnappyDecompressionValidator { - private: - size_t expected_; - size_t produced_; - - public: - inline SnappyDecompressionValidator() : produced_(0) { } - inline void SetExpectedLength(size_t len) { - expected_ = len; - } - inline bool CheckLength() const { - return expected_ == produced_; - } - inline bool Append(const char* ip, size_t len) { - produced_ += len; - return produced_ <= expected_; - } - inline bool TryFastAppend(const char* ip, size_t available, size_t length) { - return false; - } - inline bool AppendFromSelf(size_t offset, size_t len) { - if (produced_ <= offset - 1u) return false; // -1u catches offset==0 - produced_ += len; - return produced_ <= expected_; - } -}; - -bool IsValidCompressedBuffer(const char* compressed, size_t n) { - ByteArraySource reader(compressed, n); - SnappyDecompressionValidator writer; - return InternalUncompress(&reader, &writer, kuint32max); -} - -void RawCompress(const char* input, - size_t input_length, - char* compressed, - size_t* compressed_length) { - ByteArraySource reader(input, input_length); - UncheckedByteArraySink writer(compressed); - Compress(&reader, &writer); - - // Compute how many bytes were added - *compressed_length = (writer.CurrentDestination() - compressed); -} - -size_t Compress(const char* input, size_t input_length, string* compressed) { - // Pre-grow the buffer to the max length of the compressed output - compressed->resize(MaxCompressedLength(input_length)); - - size_t compressed_length; - RawCompress(input, input_length, string_as_array(compressed), - &compressed_length); - compressed->resize(compressed_length); - return compressed_length; -} - - -} // end namespace snappy - diff --git a/snappy-1.1.0/snappy.h b/snappy-1.1.0/snappy.h deleted file mode 100644 index 03ef6ce..0000000 --- a/snappy-1.1.0/snappy.h +++ /dev/null @@ -1,163 +0,0 @@ -// Copyright 2005 and onwards Google Inc. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// A light-weight compression algorithm. It is designed for speed of -// compression and decompression, rather than for the utmost in space -// savings. -// -// For getting better compression ratios when you are compressing data -// with long repeated sequences or compressing data that is similar to -// other data, while still compressing fast, you might look at first -// using BMDiff and then compressing the output of BMDiff with -// Snappy. - -#ifndef UTIL_SNAPPY_SNAPPY_H__ -#define UTIL_SNAPPY_SNAPPY_H__ - -#include -#include - -#include "snappy-stubs-public.h" - -namespace snappy { - class Source; - class Sink; - - // ------------------------------------------------------------------------ - // Generic compression/decompression routines. - // ------------------------------------------------------------------------ - - // Compress the bytes read from "*source" and append to "*sink". Return the - // number of bytes written. - size_t Compress(Source* source, Sink* sink); - - // Find the uncompressed length of the given stream, as given by the header. - // Note that the true length could deviate from this; the stream could e.g. - // be truncated. - // - // Also note that this leaves "*source" in a state that is unsuitable for - // further operations, such as RawUncompress(). You will need to rewind - // or recreate the source yourself before attempting any further calls. - bool GetUncompressedLength(Source* source, uint32* result); - - // ------------------------------------------------------------------------ - // Higher-level string based routines (should be sufficient for most users) - // ------------------------------------------------------------------------ - - // Sets "*output" to the compressed version of "input[0,input_length-1]". - // Original contents of *output are lost. - // - // REQUIRES: "input[]" is not an alias of "*output". - size_t Compress(const char* input, size_t input_length, string* output); - - // Decompresses "compressed[0,compressed_length-1]" to "*uncompressed". - // Original contents of "*uncompressed" are lost. - // - // REQUIRES: "compressed[]" is not an alias of "*uncompressed". - // - // returns false if the message is corrupted and could not be decompressed - bool Uncompress(const char* compressed, size_t compressed_length, - string* uncompressed); - - - // ------------------------------------------------------------------------ - // Lower-level character array based routines. May be useful for - // efficiency reasons in certain circumstances. - // ------------------------------------------------------------------------ - - // REQUIRES: "compressed" must point to an area of memory that is at - // least "MaxCompressedLength(input_length)" bytes in length. - // - // Takes the data stored in "input[0..input_length]" and stores - // it in the array pointed to by "compressed". - // - // "*compressed_length" is set to the length of the compressed output. - // - // Example: - // char* output = new char[snappy::MaxCompressedLength(input_length)]; - // size_t output_length; - // RawCompress(input, input_length, output, &output_length); - // ... Process(output, output_length) ... - // delete [] output; - void RawCompress(const char* input, - size_t input_length, - char* compressed, - size_t* compressed_length); - - // Given data in "compressed[0..compressed_length-1]" generated by - // calling the Snappy::Compress routine, this routine - // stores the uncompressed data to - // uncompressed[0..GetUncompressedLength(compressed)-1] - // returns false if the message is corrupted and could not be decrypted - bool RawUncompress(const char* compressed, size_t compressed_length, - char* uncompressed); - - // Given data from the byte source 'compressed' generated by calling - // the Snappy::Compress routine, this routine stores the uncompressed - // data to - // uncompressed[0..GetUncompressedLength(compressed,compressed_length)-1] - // returns false if the message is corrupted and could not be decrypted - bool RawUncompress(Source* compressed, char* uncompressed); - - // Returns the maximal size of the compressed representation of - // input data that is "source_bytes" bytes in length; - size_t MaxCompressedLength(size_t source_bytes); - - // REQUIRES: "compressed[]" was produced by RawCompress() or Compress() - // Returns true and stores the length of the uncompressed data in - // *result normally. Returns false on parsing error. - // This operation takes O(1) time. - bool GetUncompressedLength(const char* compressed, size_t compressed_length, - size_t* result); - - // Returns true iff the contents of "compressed[]" can be uncompressed - // successfully. Does not return the uncompressed data. Takes - // time proportional to compressed_length, but is usually at least - // a factor of four faster than actual decompression. - bool IsValidCompressedBuffer(const char* compressed, - size_t compressed_length); - - // The size of a compression block. Note that many parts of the compression - // code assumes that kBlockSize <= 65536; in particular, the hash table - // can only store 16-bit offsets, and EmitCopy() also assumes the offset - // is 65535 bytes or less. Note also that if you change this, it will - // affect the framing format (see framing_format.txt). - // - // Note that there might be older data around that is compressed with larger - // block sizes, so the decompression code should not rely on the - // non-existence of long backreferences. - static const int kBlockLog = 16; - static const size_t kBlockSize = 1 << kBlockLog; - - static const int kMaxHashTableBits = 14; - static const size_t kMaxHashTableSize = 1 << kMaxHashTableBits; - -} // end namespace snappy - - -#endif // UTIL_SNAPPY_SNAPPY_H__ diff --git a/snappy-1.1.0/snappy_unittest.cc b/snappy-1.1.0/snappy_unittest.cc deleted file mode 100644 index f345dc3..0000000 --- a/snappy-1.1.0/snappy_unittest.cc +++ /dev/null @@ -1,1157 +0,0 @@ -// Copyright 2005 and onwards Google Inc. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include -#include - - -#include -#include -#include - -#include "snappy.h" -#include "snappy-internal.h" -#include "snappy-test.h" -#include "snappy-sinksource.h" - -DEFINE_int32(start_len, -1, - "Starting prefix size for testing (-1: just full file contents)"); -DEFINE_int32(end_len, -1, - "Starting prefix size for testing (-1: just full file contents)"); -DEFINE_int32(bytes, 10485760, - "How many bytes to compress/uncompress per file for timing"); - -DEFINE_bool(zlib, false, - "Run zlib compression (http://www.zlib.net)"); -DEFINE_bool(lzo, false, - "Run LZO compression (http://www.oberhumer.com/opensource/lzo/)"); -DEFINE_bool(quicklz, false, - "Run quickLZ compression (http://www.quicklz.com/)"); -DEFINE_bool(liblzf, false, - "Run libLZF compression " - "(http://www.goof.com/pcg/marc/liblzf.html)"); -DEFINE_bool(fastlz, false, - "Run FastLZ compression (http://www.fastlz.org/"); -DEFINE_bool(snappy, true, "Run snappy compression"); - - -DEFINE_bool(write_compressed, false, - "Write compressed versions of each file to .comp"); -DEFINE_bool(write_uncompressed, false, - "Write uncompressed versions of each file to .uncomp"); - -namespace snappy { - - -#ifdef HAVE_FUNC_MMAP - -// To test against code that reads beyond its input, this class copies a -// string to a newly allocated group of pages, the last of which -// is made unreadable via mprotect. Note that we need to allocate the -// memory with mmap(), as POSIX allows mprotect() only on memory allocated -// with mmap(), and some malloc/posix_memalign implementations expect to -// be able to read previously allocated memory while doing heap allocations. -class DataEndingAtUnreadablePage { - public: - explicit DataEndingAtUnreadablePage(const string& s) { - const size_t page_size = getpagesize(); - const size_t size = s.size(); - // Round up space for string to a multiple of page_size. - size_t space_for_string = (size + page_size - 1) & ~(page_size - 1); - alloc_size_ = space_for_string + page_size; - mem_ = mmap(NULL, alloc_size_, - PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); - CHECK_NE(MAP_FAILED, mem_); - protected_page_ = reinterpret_cast(mem_) + space_for_string; - char* dst = protected_page_ - size; - memcpy(dst, s.data(), size); - data_ = dst; - size_ = size; - // Make guard page unreadable. - CHECK_EQ(0, mprotect(protected_page_, page_size, PROT_NONE)); - } - - ~DataEndingAtUnreadablePage() { - // Undo the mprotect. - CHECK_EQ(0, mprotect(protected_page_, getpagesize(), PROT_READ|PROT_WRITE)); - CHECK_EQ(0, munmap(mem_, alloc_size_)); - } - - const char* data() const { return data_; } - size_t size() const { return size_; } - - private: - size_t alloc_size_; - void* mem_; - char* protected_page_; - const char* data_; - size_t size_; -}; - -#else // HAVE_FUNC_MMAP - -// Fallback for systems without mmap. -typedef string DataEndingAtUnreadablePage; - -#endif - -enum CompressorType { - ZLIB, LZO, LIBLZF, QUICKLZ, FASTLZ, SNAPPY -}; - -const char* names[] = { - "ZLIB", "LZO", "LIBLZF", "QUICKLZ", "FASTLZ", "SNAPPY" -}; - -static size_t MinimumRequiredOutputSpace(size_t input_size, - CompressorType comp) { - switch (comp) { -#ifdef ZLIB_VERSION - case ZLIB: - return ZLib::MinCompressbufSize(input_size); -#endif // ZLIB_VERSION - -#ifdef LZO_VERSION - case LZO: - return input_size + input_size/64 + 16 + 3; -#endif // LZO_VERSION - -#ifdef LZF_VERSION - case LIBLZF: - return input_size; -#endif // LZF_VERSION - -#ifdef QLZ_VERSION_MAJOR - case QUICKLZ: - return input_size + 36000; // 36000 is used for scratch. -#endif // QLZ_VERSION_MAJOR - -#ifdef FASTLZ_VERSION - case FASTLZ: - return max(static_cast(ceil(input_size * 1.05)), 66); -#endif // FASTLZ_VERSION - - case SNAPPY: - return snappy::MaxCompressedLength(input_size); - - default: - LOG(FATAL) << "Unknown compression type number " << comp; - } -} - -// Returns true if we successfully compressed, false otherwise. -// -// If compressed_is_preallocated is set, do not resize the compressed buffer. -// This is typically what you want for a benchmark, in order to not spend -// time in the memory allocator. If you do set this flag, however, -// "compressed" must be preinitialized to at least MinCompressbufSize(comp) -// number of bytes, and may contain junk bytes at the end after return. -static bool Compress(const char* input, size_t input_size, CompressorType comp, - string* compressed, bool compressed_is_preallocated) { - if (!compressed_is_preallocated) { - compressed->resize(MinimumRequiredOutputSpace(input_size, comp)); - } - - switch (comp) { -#ifdef ZLIB_VERSION - case ZLIB: { - ZLib zlib; - uLongf destlen = compressed->size(); - int ret = zlib.Compress( - reinterpret_cast(string_as_array(compressed)), - &destlen, - reinterpret_cast(input), - input_size); - CHECK_EQ(Z_OK, ret); - if (!compressed_is_preallocated) { - compressed->resize(destlen); - } - return true; - } -#endif // ZLIB_VERSION - -#ifdef LZO_VERSION - case LZO: { - unsigned char* mem = new unsigned char[LZO1X_1_15_MEM_COMPRESS]; - lzo_uint destlen; - int ret = lzo1x_1_15_compress( - reinterpret_cast(input), - input_size, - reinterpret_cast(string_as_array(compressed)), - &destlen, - mem); - CHECK_EQ(LZO_E_OK, ret); - delete[] mem; - if (!compressed_is_preallocated) { - compressed->resize(destlen); - } - break; - } -#endif // LZO_VERSION - -#ifdef LZF_VERSION - case LIBLZF: { - int destlen = lzf_compress(input, - input_size, - string_as_array(compressed), - input_size); - if (destlen == 0) { - // lzf *can* cause lots of blowup when compressing, so they - // recommend to limit outsize to insize, and just not compress - // if it's bigger. Ideally, we'd just swap input and output. - compressed->assign(input, input_size); - destlen = input_size; - } - if (!compressed_is_preallocated) { - compressed->resize(destlen); - } - break; - } -#endif // LZF_VERSION - -#ifdef QLZ_VERSION_MAJOR - case QUICKLZ: { - qlz_state_compress *state_compress = new qlz_state_compress; - int destlen = qlz_compress(input, - string_as_array(compressed), - input_size, - state_compress); - delete state_compress; - CHECK_NE(0, destlen); - if (!compressed_is_preallocated) { - compressed->resize(destlen); - } - break; - } -#endif // QLZ_VERSION_MAJOR - -#ifdef FASTLZ_VERSION - case FASTLZ: { - // Use level 1 compression since we mostly care about speed. - int destlen = fastlz_compress_level( - 1, - input, - input_size, - string_as_array(compressed)); - if (!compressed_is_preallocated) { - compressed->resize(destlen); - } - CHECK_NE(destlen, 0); - break; - } -#endif // FASTLZ_VERSION - - case SNAPPY: { - size_t destlen; - snappy::RawCompress(input, input_size, - string_as_array(compressed), - &destlen); - CHECK_LE(destlen, snappy::MaxCompressedLength(input_size)); - if (!compressed_is_preallocated) { - compressed->resize(destlen); - } - break; - } - - - default: { - return false; // the asked-for library wasn't compiled in - } - } - return true; -} - -static bool Uncompress(const string& compressed, CompressorType comp, - int size, string* output) { - switch (comp) { -#ifdef ZLIB_VERSION - case ZLIB: { - output->resize(size); - ZLib zlib; - uLongf destlen = output->size(); - int ret = zlib.Uncompress( - reinterpret_cast(string_as_array(output)), - &destlen, - reinterpret_cast(compressed.data()), - compressed.size()); - CHECK_EQ(Z_OK, ret); - CHECK_EQ(static_cast(size), destlen); - break; - } -#endif // ZLIB_VERSION - -#ifdef LZO_VERSION - case LZO: { - output->resize(size); - lzo_uint destlen; - int ret = lzo1x_decompress( - reinterpret_cast(compressed.data()), - compressed.size(), - reinterpret_cast(string_as_array(output)), - &destlen, - NULL); - CHECK_EQ(LZO_E_OK, ret); - CHECK_EQ(static_cast(size), destlen); - break; - } -#endif // LZO_VERSION - -#ifdef LZF_VERSION - case LIBLZF: { - output->resize(size); - int destlen = lzf_decompress(compressed.data(), - compressed.size(), - string_as_array(output), - output->size()); - if (destlen == 0) { - // This error probably means we had decided not to compress, - // and thus have stored input in output directly. - output->assign(compressed.data(), compressed.size()); - destlen = compressed.size(); - } - CHECK_EQ(destlen, size); - break; - } -#endif // LZF_VERSION - -#ifdef QLZ_VERSION_MAJOR - case QUICKLZ: { - output->resize(size); - qlz_state_decompress *state_decompress = new qlz_state_decompress; - int destlen = qlz_decompress(compressed.data(), - string_as_array(output), - state_decompress); - delete state_decompress; - CHECK_EQ(destlen, size); - break; - } -#endif // QLZ_VERSION_MAJOR - -#ifdef FASTLZ_VERSION - case FASTLZ: { - output->resize(size); - int destlen = fastlz_decompress(compressed.data(), - compressed.length(), - string_as_array(output), - size); - CHECK_EQ(destlen, size); - break; - } -#endif // FASTLZ_VERSION - - case SNAPPY: { - snappy::RawUncompress(compressed.data(), compressed.size(), - string_as_array(output)); - break; - } - - - default: { - return false; // the asked-for library wasn't compiled in - } - } - return true; -} - -static void Measure(const char* data, - size_t length, - CompressorType comp, - int repeats, - int block_size) { - // Run tests a few time and pick median running times - static const int kRuns = 5; - double ctime[kRuns]; - double utime[kRuns]; - int compressed_size = 0; - - { - // Chop the input into blocks - int num_blocks = (length + block_size - 1) / block_size; - vector input(num_blocks); - vector input_length(num_blocks); - vector compressed(num_blocks); - vector output(num_blocks); - for (int b = 0; b < num_blocks; b++) { - int input_start = b * block_size; - int input_limit = min((b+1)*block_size, length); - input[b] = data+input_start; - input_length[b] = input_limit-input_start; - - // Pre-grow the output buffer so we don't measure string append time. - compressed[b].resize(MinimumRequiredOutputSpace(block_size, comp)); - } - - // First, try one trial compression to make sure the code is compiled in - if (!Compress(input[0], input_length[0], comp, &compressed[0], true)) { - LOG(WARNING) << "Skipping " << names[comp] << ": " - << "library not compiled in"; - return; - } - - for (int run = 0; run < kRuns; run++) { - CycleTimer ctimer, utimer; - - for (int b = 0; b < num_blocks; b++) { - // Pre-grow the output buffer so we don't measure string append time. - compressed[b].resize(MinimumRequiredOutputSpace(block_size, comp)); - } - - ctimer.Start(); - for (int b = 0; b < num_blocks; b++) - for (int i = 0; i < repeats; i++) - Compress(input[b], input_length[b], comp, &compressed[b], true); - ctimer.Stop(); - - // Compress once more, with resizing, so we don't leave junk - // at the end that will confuse the decompressor. - for (int b = 0; b < num_blocks; b++) { - Compress(input[b], input_length[b], comp, &compressed[b], false); - } - - for (int b = 0; b < num_blocks; b++) { - output[b].resize(input_length[b]); - } - - utimer.Start(); - for (int i = 0; i < repeats; i++) - for (int b = 0; b < num_blocks; b++) - Uncompress(compressed[b], comp, input_length[b], &output[b]); - utimer.Stop(); - - ctime[run] = ctimer.Get(); - utime[run] = utimer.Get(); - } - - compressed_size = 0; - for (int i = 0; i < compressed.size(); i++) { - compressed_size += compressed[i].size(); - } - } - - sort(ctime, ctime + kRuns); - sort(utime, utime + kRuns); - const int med = kRuns/2; - - float comp_rate = (length / ctime[med]) * repeats / 1048576.0; - float uncomp_rate = (length / utime[med]) * repeats / 1048576.0; - string x = names[comp]; - x += ":"; - string urate = (uncomp_rate >= 0) - ? StringPrintf("%.1f", uncomp_rate) - : string("?"); - printf("%-7s [b %dM] bytes %6d -> %6d %4.1f%% " - "comp %5.1f MB/s uncomp %5s MB/s\n", - x.c_str(), - block_size/(1<<20), - static_cast(length), static_cast(compressed_size), - (compressed_size * 100.0) / max(1, length), - comp_rate, - urate.c_str()); -} - - -static int VerifyString(const string& input) { - string compressed; - DataEndingAtUnreadablePage i(input); - const size_t written = snappy::Compress(i.data(), i.size(), &compressed); - CHECK_EQ(written, compressed.size()); - CHECK_LE(compressed.size(), - snappy::MaxCompressedLength(input.size())); - CHECK(snappy::IsValidCompressedBuffer(compressed.data(), compressed.size())); - - string uncompressed; - DataEndingAtUnreadablePage c(compressed); - CHECK(snappy::Uncompress(c.data(), c.size(), &uncompressed)); - CHECK_EQ(uncompressed, input); - return uncompressed.size(); -} - - -// Test that data compressed by a compressor that does not -// obey block sizes is uncompressed properly. -static void VerifyNonBlockedCompression(const string& input) { - if (input.length() > snappy::kBlockSize) { - // We cannot test larger blocks than the maximum block size, obviously. - return; - } - - string prefix; - Varint::Append32(&prefix, input.size()); - - // Setup compression table - snappy::internal::WorkingMemory wmem; - int table_size; - uint16* table = wmem.GetHashTable(input.size(), &table_size); - - // Compress entire input in one shot - string compressed; - compressed += prefix; - compressed.resize(prefix.size()+snappy::MaxCompressedLength(input.size())); - char* dest = string_as_array(&compressed) + prefix.size(); - char* end = snappy::internal::CompressFragment(input.data(), input.size(), - dest, table, table_size); - compressed.resize(end - compressed.data()); - - // Uncompress into string - string uncomp_str; - CHECK(snappy::Uncompress(compressed.data(), compressed.size(), &uncomp_str)); - CHECK_EQ(uncomp_str, input); - -} - -// Expand the input so that it is at least K times as big as block size -static string Expand(const string& input) { - static const int K = 3; - string data = input; - while (data.size() < K * snappy::kBlockSize) { - data += input; - } - return data; -} - -static int Verify(const string& input) { - VLOG(1) << "Verifying input of size " << input.size(); - - // Compress using string based routines - const int result = VerifyString(input); - - - VerifyNonBlockedCompression(input); - if (!input.empty()) { - VerifyNonBlockedCompression(Expand(input)); - } - - - return result; -} - -// This test checks to ensure that snappy doesn't coredump if it gets -// corrupted data. - -static bool IsValidCompressedBuffer(const string& c) { - return snappy::IsValidCompressedBuffer(c.data(), c.size()); -} -static bool Uncompress(const string& c, string* u) { - return snappy::Uncompress(c.data(), c.size(), u); -} - -TYPED_TEST(CorruptedTest, VerifyCorrupted) { - string source = "making sure we don't crash with corrupted input"; - VLOG(1) << source; - string dest; - TypeParam uncmp; - snappy::Compress(source.data(), source.size(), &dest); - - // Mess around with the data. It's hard to simulate all possible - // corruptions; this is just one example ... - CHECK_GT(dest.size(), 3); - dest[1]--; - dest[3]++; - // this really ought to fail. - CHECK(!IsValidCompressedBuffer(TypeParam(dest))); - CHECK(!Uncompress(TypeParam(dest), &uncmp)); - - // This is testing for a security bug - a buffer that decompresses to 100k - // but we lie in the snappy header and only reserve 0 bytes of memory :) - source.resize(100000); - for (int i = 0; i < source.length(); ++i) { - source[i] = 'A'; - } - snappy::Compress(source.data(), source.size(), &dest); - dest[0] = dest[1] = dest[2] = dest[3] = 0; - CHECK(!IsValidCompressedBuffer(TypeParam(dest))); - CHECK(!Uncompress(TypeParam(dest), &uncmp)); - - if (sizeof(void *) == 4) { - // Another security check; check a crazy big length can't DoS us with an - // over-allocation. - // Currently this is done only for 32-bit builds. On 64-bit builds, - // where 3 GB might be an acceptable allocation size, Uncompress() - // attempts to decompress, and sometimes causes the test to run out of - // memory. - dest[0] = dest[1] = dest[2] = dest[3] = 0xff; - // This decodes to a really large size, i.e., about 3 GB. - dest[4] = 'k'; - CHECK(!IsValidCompressedBuffer(TypeParam(dest))); - CHECK(!Uncompress(TypeParam(dest), &uncmp)); - } else { - LOG(WARNING) << "Crazy decompression lengths not checked on 64-bit build"; - } - - // This decodes to about 2 MB; much smaller, but should still fail. - dest[0] = dest[1] = dest[2] = 0xff; - dest[3] = 0x00; - CHECK(!IsValidCompressedBuffer(TypeParam(dest))); - CHECK(!Uncompress(TypeParam(dest), &uncmp)); - - // try reading stuff in from a bad file. - for (int i = 1; i <= 3; ++i) { - string data = ReadTestDataFile(StringPrintf("baddata%d.snappy", i).c_str()); - string uncmp; - // check that we don't return a crazy length - size_t ulen; - CHECK(!snappy::GetUncompressedLength(data.data(), data.size(), &ulen) - || (ulen < (1<<20))); - uint32 ulen2; - snappy::ByteArraySource source(data.data(), data.size()); - CHECK(!snappy::GetUncompressedLength(&source, &ulen2) || - (ulen2 < (1<<20))); - CHECK(!IsValidCompressedBuffer(TypeParam(data))); - CHECK(!Uncompress(TypeParam(data), &uncmp)); - } -} - -// Helper routines to construct arbitrary compressed strings. -// These mirror the compression code in snappy.cc, but are copied -// here so that we can bypass some limitations in the how snappy.cc -// invokes these routines. -static void AppendLiteral(string* dst, const string& literal) { - if (literal.empty()) return; - int n = literal.size() - 1; - if (n < 60) { - // Fit length in tag byte - dst->push_back(0 | (n << 2)); - } else { - // Encode in upcoming bytes - char number[4]; - int count = 0; - while (n > 0) { - number[count++] = n & 0xff; - n >>= 8; - } - dst->push_back(0 | ((59+count) << 2)); - *dst += string(number, count); - } - *dst += literal; -} - -static void AppendCopy(string* dst, int offset, int length) { - while (length > 0) { - // Figure out how much to copy in one shot - int to_copy; - if (length >= 68) { - to_copy = 64; - } else if (length > 64) { - to_copy = 60; - } else { - to_copy = length; - } - length -= to_copy; - - if ((to_copy < 12) && (offset < 2048)) { - assert(to_copy-4 < 8); // Must fit in 3 bits - dst->push_back(1 | ((to_copy-4) << 2) | ((offset >> 8) << 5)); - dst->push_back(offset & 0xff); - } else if (offset < 65536) { - dst->push_back(2 | ((to_copy-1) << 2)); - dst->push_back(offset & 0xff); - dst->push_back(offset >> 8); - } else { - dst->push_back(3 | ((to_copy-1) << 2)); - dst->push_back(offset & 0xff); - dst->push_back((offset >> 8) & 0xff); - dst->push_back((offset >> 16) & 0xff); - dst->push_back((offset >> 24) & 0xff); - } - } -} - -TEST(Snappy, SimpleTests) { - Verify(""); - Verify("a"); - Verify("ab"); - Verify("abc"); - - Verify("aaaaaaa" + string(16, 'b') + string("aaaaa") + "abc"); - Verify("aaaaaaa" + string(256, 'b') + string("aaaaa") + "abc"); - Verify("aaaaaaa" + string(2047, 'b') + string("aaaaa") + "abc"); - Verify("aaaaaaa" + string(65536, 'b') + string("aaaaa") + "abc"); - Verify("abcaaaaaaa" + string(65536, 'b') + string("aaaaa") + "abc"); -} - -// Verify max blowup (lots of four-byte copies) -TEST(Snappy, MaxBlowup) { - string input; - for (int i = 0; i < 20000; i++) { - ACMRandom rnd(i); - uint32 bytes = static_cast(rnd.Next()); - input.append(reinterpret_cast(&bytes), sizeof(bytes)); - } - for (int i = 19999; i >= 0; i--) { - ACMRandom rnd(i); - uint32 bytes = static_cast(rnd.Next()); - input.append(reinterpret_cast(&bytes), sizeof(bytes)); - } - Verify(input); -} - -TEST(Snappy, RandomData) { - ACMRandom rnd(FLAGS_test_random_seed); - - const int num_ops = 20000; - for (int i = 0; i < num_ops; i++) { - if ((i % 1000) == 0) { - VLOG(0) << "Random op " << i << " of " << num_ops; - } - - string x; - int len = rnd.Uniform(4096); - if (i < 100) { - len = 65536 + rnd.Uniform(65536); - } - while (x.size() < len) { - int run_len = 1; - if (rnd.OneIn(10)) { - run_len = rnd.Skewed(8); - } - char c = (i < 100) ? rnd.Uniform(256) : rnd.Skewed(3); - while (run_len-- > 0 && x.size() < len) { - x += c; - } - } - - Verify(x); - } -} - -TEST(Snappy, FourByteOffset) { - // The new compressor cannot generate four-byte offsets since - // it chops up the input into 32KB pieces. So we hand-emit the - // copy manually. - - // The two fragments that make up the input string. - string fragment1 = "012345689abcdefghijklmnopqrstuvwxyz"; - string fragment2 = "some other string"; - - // How many times each fragment is emitted. - const int n1 = 2; - const int n2 = 100000 / fragment2.size(); - const int length = n1 * fragment1.size() + n2 * fragment2.size(); - - string compressed; - Varint::Append32(&compressed, length); - - AppendLiteral(&compressed, fragment1); - string src = fragment1; - for (int i = 0; i < n2; i++) { - AppendLiteral(&compressed, fragment2); - src += fragment2; - } - AppendCopy(&compressed, src.size(), fragment1.size()); - src += fragment1; - CHECK_EQ(length, src.size()); - - string uncompressed; - CHECK(snappy::IsValidCompressedBuffer(compressed.data(), compressed.size())); - CHECK(snappy::Uncompress(compressed.data(), compressed.size(), &uncompressed)); - CHECK_EQ(uncompressed, src); -} - - -static bool CheckUncompressedLength(const string& compressed, - size_t* ulength) { - const bool result1 = snappy::GetUncompressedLength(compressed.data(), - compressed.size(), - ulength); - - snappy::ByteArraySource source(compressed.data(), compressed.size()); - uint32 length; - const bool result2 = snappy::GetUncompressedLength(&source, &length); - CHECK_EQ(result1, result2); - return result1; -} - -TEST(SnappyCorruption, TruncatedVarint) { - string compressed, uncompressed; - size_t ulength; - compressed.push_back('\xf0'); - CHECK(!CheckUncompressedLength(compressed, &ulength)); - CHECK(!snappy::IsValidCompressedBuffer(compressed.data(), compressed.size())); - CHECK(!snappy::Uncompress(compressed.data(), compressed.size(), - &uncompressed)); -} - -TEST(SnappyCorruption, UnterminatedVarint) { - string compressed, uncompressed; - size_t ulength; - compressed.push_back(128); - compressed.push_back(128); - compressed.push_back(128); - compressed.push_back(128); - compressed.push_back(128); - compressed.push_back(10); - CHECK(!CheckUncompressedLength(compressed, &ulength)); - CHECK(!snappy::IsValidCompressedBuffer(compressed.data(), compressed.size())); - CHECK(!snappy::Uncompress(compressed.data(), compressed.size(), - &uncompressed)); -} - -TEST(Snappy, ReadPastEndOfBuffer) { - // Check that we do not read past end of input - - // Make a compressed string that ends with a single-byte literal - string compressed; - Varint::Append32(&compressed, 1); - AppendLiteral(&compressed, "x"); - - string uncompressed; - DataEndingAtUnreadablePage c(compressed); - CHECK(snappy::Uncompress(c.data(), c.size(), &uncompressed)); - CHECK_EQ(uncompressed, string("x")); -} - -// Check for an infinite loop caused by a copy with offset==0 -TEST(Snappy, ZeroOffsetCopy) { - const char* compressed = "\x40\x12\x00\x00"; - // \x40 Length (must be > kMaxIncrementCopyOverflow) - // \x12\x00\x00 Copy with offset==0, length==5 - char uncompressed[100]; - EXPECT_FALSE(snappy::RawUncompress(compressed, 4, uncompressed)); -} - -TEST(Snappy, ZeroOffsetCopyValidation) { - const char* compressed = "\x05\x12\x00\x00"; - // \x05 Length - // \x12\x00\x00 Copy with offset==0, length==5 - EXPECT_FALSE(snappy::IsValidCompressedBuffer(compressed, 4)); -} - - -namespace { - -int TestFindMatchLength(const char* s1, const char *s2, unsigned length) { - return snappy::internal::FindMatchLength(s1, s2, s2 + length); -} - -} // namespace - -TEST(Snappy, FindMatchLength) { - // Exercise all different code paths through the function. - // 64-bit version: - - // Hit s1_limit in 64-bit loop, hit s1_limit in single-character loop. - EXPECT_EQ(6, TestFindMatchLength("012345", "012345", 6)); - EXPECT_EQ(11, TestFindMatchLength("01234567abc", "01234567abc", 11)); - - // Hit s1_limit in 64-bit loop, find a non-match in single-character loop. - EXPECT_EQ(9, TestFindMatchLength("01234567abc", "01234567axc", 9)); - - // Same, but edge cases. - EXPECT_EQ(11, TestFindMatchLength("01234567abc!", "01234567abc!", 11)); - EXPECT_EQ(11, TestFindMatchLength("01234567abc!", "01234567abc?", 11)); - - // Find non-match at once in first loop. - EXPECT_EQ(0, TestFindMatchLength("01234567xxxxxxxx", "?1234567xxxxxxxx", 16)); - EXPECT_EQ(1, TestFindMatchLength("01234567xxxxxxxx", "0?234567xxxxxxxx", 16)); - EXPECT_EQ(4, TestFindMatchLength("01234567xxxxxxxx", "01237654xxxxxxxx", 16)); - EXPECT_EQ(7, TestFindMatchLength("01234567xxxxxxxx", "0123456?xxxxxxxx", 16)); - - // Find non-match in first loop after one block. - EXPECT_EQ(8, TestFindMatchLength("abcdefgh01234567xxxxxxxx", - "abcdefgh?1234567xxxxxxxx", 24)); - EXPECT_EQ(9, TestFindMatchLength("abcdefgh01234567xxxxxxxx", - "abcdefgh0?234567xxxxxxxx", 24)); - EXPECT_EQ(12, TestFindMatchLength("abcdefgh01234567xxxxxxxx", - "abcdefgh01237654xxxxxxxx", 24)); - EXPECT_EQ(15, TestFindMatchLength("abcdefgh01234567xxxxxxxx", - "abcdefgh0123456?xxxxxxxx", 24)); - - // 32-bit version: - - // Short matches. - EXPECT_EQ(0, TestFindMatchLength("01234567", "?1234567", 8)); - EXPECT_EQ(1, TestFindMatchLength("01234567", "0?234567", 8)); - EXPECT_EQ(2, TestFindMatchLength("01234567", "01?34567", 8)); - EXPECT_EQ(3, TestFindMatchLength("01234567", "012?4567", 8)); - EXPECT_EQ(4, TestFindMatchLength("01234567", "0123?567", 8)); - EXPECT_EQ(5, TestFindMatchLength("01234567", "01234?67", 8)); - EXPECT_EQ(6, TestFindMatchLength("01234567", "012345?7", 8)); - EXPECT_EQ(7, TestFindMatchLength("01234567", "0123456?", 8)); - EXPECT_EQ(7, TestFindMatchLength("01234567", "0123456?", 7)); - EXPECT_EQ(7, TestFindMatchLength("01234567!", "0123456??", 7)); - - // Hit s1_limit in 32-bit loop, hit s1_limit in single-character loop. - EXPECT_EQ(10, TestFindMatchLength("xxxxxxabcd", "xxxxxxabcd", 10)); - EXPECT_EQ(10, TestFindMatchLength("xxxxxxabcd?", "xxxxxxabcd?", 10)); - EXPECT_EQ(13, TestFindMatchLength("xxxxxxabcdef", "xxxxxxabcdef", 13)); - - // Same, but edge cases. - EXPECT_EQ(12, TestFindMatchLength("xxxxxx0123abc!", "xxxxxx0123abc!", 12)); - EXPECT_EQ(12, TestFindMatchLength("xxxxxx0123abc!", "xxxxxx0123abc?", 12)); - - // Hit s1_limit in 32-bit loop, find a non-match in single-character loop. - EXPECT_EQ(11, TestFindMatchLength("xxxxxx0123abc", "xxxxxx0123axc", 13)); - - // Find non-match at once in first loop. - EXPECT_EQ(6, TestFindMatchLength("xxxxxx0123xxxxxxxx", - "xxxxxx?123xxxxxxxx", 18)); - EXPECT_EQ(7, TestFindMatchLength("xxxxxx0123xxxxxxxx", - "xxxxxx0?23xxxxxxxx", 18)); - EXPECT_EQ(8, TestFindMatchLength("xxxxxx0123xxxxxxxx", - "xxxxxx0132xxxxxxxx", 18)); - EXPECT_EQ(9, TestFindMatchLength("xxxxxx0123xxxxxxxx", - "xxxxxx012?xxxxxxxx", 18)); - - // Same, but edge cases. - EXPECT_EQ(6, TestFindMatchLength("xxxxxx0123", "xxxxxx?123", 10)); - EXPECT_EQ(7, TestFindMatchLength("xxxxxx0123", "xxxxxx0?23", 10)); - EXPECT_EQ(8, TestFindMatchLength("xxxxxx0123", "xxxxxx0132", 10)); - EXPECT_EQ(9, TestFindMatchLength("xxxxxx0123", "xxxxxx012?", 10)); - - // Find non-match in first loop after one block. - EXPECT_EQ(10, TestFindMatchLength("xxxxxxabcd0123xx", - "xxxxxxabcd?123xx", 16)); - EXPECT_EQ(11, TestFindMatchLength("xxxxxxabcd0123xx", - "xxxxxxabcd0?23xx", 16)); - EXPECT_EQ(12, TestFindMatchLength("xxxxxxabcd0123xx", - "xxxxxxabcd0132xx", 16)); - EXPECT_EQ(13, TestFindMatchLength("xxxxxxabcd0123xx", - "xxxxxxabcd012?xx", 16)); - - // Same, but edge cases. - EXPECT_EQ(10, TestFindMatchLength("xxxxxxabcd0123", "xxxxxxabcd?123", 14)); - EXPECT_EQ(11, TestFindMatchLength("xxxxxxabcd0123", "xxxxxxabcd0?23", 14)); - EXPECT_EQ(12, TestFindMatchLength("xxxxxxabcd0123", "xxxxxxabcd0132", 14)); - EXPECT_EQ(13, TestFindMatchLength("xxxxxxabcd0123", "xxxxxxabcd012?", 14)); -} - -TEST(Snappy, FindMatchLengthRandom) { - const int kNumTrials = 10000; - const int kTypicalLength = 10; - ACMRandom rnd(FLAGS_test_random_seed); - - for (int i = 0; i < kNumTrials; i++) { - string s, t; - char a = rnd.Rand8(); - char b = rnd.Rand8(); - while (!rnd.OneIn(kTypicalLength)) { - s.push_back(rnd.OneIn(2) ? a : b); - t.push_back(rnd.OneIn(2) ? a : b); - } - DataEndingAtUnreadablePage u(s); - DataEndingAtUnreadablePage v(t); - int matched = snappy::internal::FindMatchLength( - u.data(), v.data(), v.data() + t.size()); - if (matched == t.size()) { - EXPECT_EQ(s, t); - } else { - EXPECT_NE(s[matched], t[matched]); - for (int j = 0; j < matched; j++) { - EXPECT_EQ(s[j], t[j]); - } - } - } -} - - -static void CompressFile(const char* fname) { - string fullinput; - file::ReadFileToString(fname, &fullinput, file::Defaults()).CheckSuccess(); - - string compressed; - Compress(fullinput.data(), fullinput.size(), SNAPPY, &compressed, false); - - file::WriteStringToFile( - string(fname).append(".comp").c_str(), compressed, - file::Defaults()).CheckSuccess(); -} - -static void UncompressFile(const char* fname) { - string fullinput; - file::ReadFileToString(fname, &fullinput, file::Defaults()).CheckSuccess(); - - size_t uncompLength; - CHECK(CheckUncompressedLength(fullinput, &uncompLength)); - - string uncompressed; - uncompressed.resize(uncompLength); - CHECK(snappy::Uncompress(fullinput.data(), fullinput.size(), &uncompressed)); - - file::WriteStringToFile( - string(fname).append(".uncomp").c_str(), uncompressed, - file::Defaults()).CheckSuccess(); -} - -static void MeasureFile(const char* fname) { - string fullinput; - file::ReadFileToString(fname, &fullinput, file::Defaults()).CheckSuccess(); - printf("%-40s :\n", fname); - - int start_len = (FLAGS_start_len < 0) ? fullinput.size() : FLAGS_start_len; - int end_len = fullinput.size(); - if (FLAGS_end_len >= 0) { - end_len = min(fullinput.size(), FLAGS_end_len); - } - for (int len = start_len; len <= end_len; len++) { - const char* const input = fullinput.data(); - int repeats = (FLAGS_bytes + len) / (len + 1); - if (FLAGS_zlib) Measure(input, len, ZLIB, repeats, 1024<<10); - if (FLAGS_lzo) Measure(input, len, LZO, repeats, 1024<<10); - if (FLAGS_liblzf) Measure(input, len, LIBLZF, repeats, 1024<<10); - if (FLAGS_quicklz) Measure(input, len, QUICKLZ, repeats, 1024<<10); - if (FLAGS_fastlz) Measure(input, len, FASTLZ, repeats, 1024<<10); - if (FLAGS_snappy) Measure(input, len, SNAPPY, repeats, 4096<<10); - - // For block-size based measurements - if (0 && FLAGS_snappy) { - Measure(input, len, SNAPPY, repeats, 8<<10); - Measure(input, len, SNAPPY, repeats, 16<<10); - Measure(input, len, SNAPPY, repeats, 32<<10); - Measure(input, len, SNAPPY, repeats, 64<<10); - Measure(input, len, SNAPPY, repeats, 256<<10); - Measure(input, len, SNAPPY, repeats, 1024<<10); - } - } -} - -static struct { - const char* label; - const char* filename; -} files[] = { - { "html", "html" }, - { "urls", "urls.10K" }, - { "jpg", "house.jpg" }, - { "pdf", "mapreduce-osdi-1.pdf" }, - { "html4", "html_x_4" }, - { "cp", "cp.html" }, - { "c", "fields.c" }, - { "lsp", "grammar.lsp" }, - { "xls", "kennedy.xls" }, - { "txt1", "alice29.txt" }, - { "txt2", "asyoulik.txt" }, - { "txt3", "lcet10.txt" }, - { "txt4", "plrabn12.txt" }, - { "bin", "ptt5" }, - { "sum", "sum" }, - { "man", "xargs.1" }, - { "pb", "geo.protodata" }, - { "gaviota", "kppkn.gtb" }, -}; - -static void BM_UFlat(int iters, int arg) { - StopBenchmarkTiming(); - - // Pick file to process based on "arg" - CHECK_GE(arg, 0); - CHECK_LT(arg, ARRAYSIZE(files)); - string contents = ReadTestDataFile(files[arg].filename); - - string zcontents; - snappy::Compress(contents.data(), contents.size(), &zcontents); - char* dst = new char[contents.size()]; - - SetBenchmarkBytesProcessed(static_cast(iters) * - static_cast(contents.size())); - SetBenchmarkLabel(files[arg].label); - StartBenchmarkTiming(); - while (iters-- > 0) { - CHECK(snappy::RawUncompress(zcontents.data(), zcontents.size(), dst)); - } - StopBenchmarkTiming(); - - delete[] dst; -} -BENCHMARK(BM_UFlat)->DenseRange(0, 17); - -static void BM_UValidate(int iters, int arg) { - StopBenchmarkTiming(); - - // Pick file to process based on "arg" - CHECK_GE(arg, 0); - CHECK_LT(arg, ARRAYSIZE(files)); - string contents = ReadTestDataFile(files[arg].filename); - - string zcontents; - snappy::Compress(contents.data(), contents.size(), &zcontents); - - SetBenchmarkBytesProcessed(static_cast(iters) * - static_cast(contents.size())); - SetBenchmarkLabel(files[arg].label); - StartBenchmarkTiming(); - while (iters-- > 0) { - CHECK(snappy::IsValidCompressedBuffer(zcontents.data(), zcontents.size())); - } - StopBenchmarkTiming(); -} -BENCHMARK(BM_UValidate)->DenseRange(0, 4); - - -static void BM_ZFlat(int iters, int arg) { - StopBenchmarkTiming(); - - // Pick file to process based on "arg" - CHECK_GE(arg, 0); - CHECK_LT(arg, ARRAYSIZE(files)); - string contents = ReadTestDataFile(files[arg].filename); - - char* dst = new char[snappy::MaxCompressedLength(contents.size())]; - - SetBenchmarkBytesProcessed(static_cast(iters) * - static_cast(contents.size())); - StartBenchmarkTiming(); - - size_t zsize = 0; - while (iters-- > 0) { - snappy::RawCompress(contents.data(), contents.size(), dst, &zsize); - } - StopBenchmarkTiming(); - const double compression_ratio = - static_cast(zsize) / std::max(1, contents.size()); - SetBenchmarkLabel(StringPrintf("%s (%.2f %%)", - files[arg].label, 100.0 * compression_ratio)); - VLOG(0) << StringPrintf("compression for %s: %zd -> %zd bytes", - files[arg].label, contents.size(), zsize); - delete[] dst; -} -BENCHMARK(BM_ZFlat)->DenseRange(0, 17); - - -} // namespace snappy - - -int main(int argc, char** argv) { - InitGoogle(argv[0], &argc, &argv, true); - File::Init(); - RunSpecifiedBenchmarks(); - - - if (argc >= 2) { - for (int arg = 1; arg < argc; arg++) { - if (FLAGS_write_compressed) { - CompressFile(argv[arg]); - } else if (FLAGS_write_uncompressed) { - UncompressFile(argv[arg]); - } else { - MeasureFile(argv[arg]); - } - } - return 0; - } - - return RUN_ALL_TESTS(); -} diff --git a/snappy-1.1.0/testdata/alice29.txt b/snappy-1.1.0/testdata/alice29.txt deleted file mode 100644 index 7033655..0000000 --- a/snappy-1.1.0/testdata/alice29.txt +++ /dev/null @@ -1,3609 +0,0 @@ - - - - - ALICE'S ADVENTURES IN WONDERLAND - - Lewis Carroll - - THE MILLENNIUM FULCRUM EDITION 2.9 - - - - - CHAPTER I - - Down the Rabbit-Hole - - - Alice was beginning to get very tired of sitting by her sister -on the bank, and of having nothing to do: once or twice she had -peeped into the book her sister was reading, but it had no -pictures or conversations in it, `and what is the use of a book,' -thought Alice `without pictures or conversation?' - - So she was considering in her own mind (as well as she could, -for the hot day made her feel very sleepy and stupid), whether -the pleasure of making a daisy-chain would be worth the trouble -of getting up and picking the daisies, when suddenly a White -Rabbit with pink eyes ran close by her. - - There was nothing so VERY remarkable in that; nor did Alice -think it so VERY much out of the way to hear the Rabbit say to -itself, `Oh dear! Oh dear! I shall be late!' (when she thought -it over afterwards, it occurred to her that she ought to have -wondered at this, but at the time it all seemed quite natural); -but when the Rabbit actually TOOK A WATCH OUT OF ITS WAISTCOAT- -POCKET, and looked at it, and then hurried on, Alice started to -her feet, for it flashed across her mind that she had never -before seen a rabbit with either a waistcoat-pocket, or a watch to -take out of it, and burning with curiosity, she ran across the -field after it, and fortunately was just in time to see it pop -down a large rabbit-hole under the hedge. - - In another moment down went Alice after it, never once -considering how in the world she was to get out again. - - The rabbit-hole went straight on like a tunnel for some way, -and then dipped suddenly down, so suddenly that Alice had not a -moment to think about stopping herself before she found herself -falling down a very deep well. - - Either the well was very deep, or she fell very slowly, for she -had plenty of time as she went down to look about her and to -wonder what was going to happen next. First, she tried to look -down and make out what she was coming to, but it was too dark to -see anything; then she looked at the sides of the well, and -noticed that they were filled with cupboards and book-shelves; -here and there she saw maps and pictures hung upon pegs. She -took down a jar from one of the shelves as she passed; it was -labelled `ORANGE MARMALADE', but to her great disappointment it -was empty: she did not like to drop the jar for fear of killing -somebody, so managed to put it into one of the cupboards as she -fell past it. - - `Well!' thought Alice to herself, `after such a fall as this, I -shall think nothing of tumbling down stairs! How brave they'll -all think me at home! Why, I wouldn't say anything about it, -even if I fell off the top of the house!' (Which was very likely -true.) - - Down, down, down. Would the fall NEVER come to an end! `I -wonder how many miles I've fallen by this time?' she said aloud. -`I must be getting somewhere near the centre of the earth. Let -me see: that would be four thousand miles down, I think--' (for, -you see, Alice had learnt several things of this sort in her -lessons in the schoolroom, and though this was not a VERY good -opportunity for showing off her knowledge, as there was no one to -listen to her, still it was good practice to say it over) `--yes, -that's about the right distance--but then I wonder what Latitude -or Longitude I've got to?' (Alice had no idea what Latitude was, -or Longitude either, but thought they were nice grand words to -say.) - - Presently she began again. `I wonder if I shall fall right -THROUGH the earth! How funny it'll seem to come out among the -people that walk with their heads downward! The Antipathies, I -think--' (she was rather glad there WAS no one listening, this -time, as it didn't sound at all the right word) `--but I shall -have to ask them what the name of the country is, you know. -Please, Ma'am, is this New Zealand or Australia?' (and she tried -to curtsey as she spoke--fancy CURTSEYING as you're falling -through the air! Do you think you could manage it?) `And what -an ignorant little girl she'll think me for asking! No, it'll -never do to ask: perhaps I shall see it written up somewhere.' - - Down, down, down. There was nothing else to do, so Alice soon -began talking again. `Dinah'll miss me very much to-night, I -should think!' (Dinah was the cat.) `I hope they'll remember -her saucer of milk at tea-time. Dinah my dear! I wish you were -down here with me! There are no mice in the air, I'm afraid, but -you might catch a bat, and that's very like a mouse, you know. -But do cats eat bats, I wonder?' And here Alice began to get -rather sleepy, and went on saying to herself, in a dreamy sort of -way, `Do cats eat bats? Do cats eat bats?' and sometimes, `Do -bats eat cats?' for, you see, as she couldn't answer either -question, it didn't much matter which way she put it. She felt -that she was dozing off, and had just begun to dream that she -was walking hand in hand with Dinah, and saying to her very -earnestly, `Now, Dinah, tell me the truth: did you ever eat a -bat?' when suddenly, thump! thump! down she came upon a heap of -sticks and dry leaves, and the fall was over. - - Alice was not a bit hurt, and she jumped up on to her feet in a -moment: she looked up, but it was all dark overhead; before her -was another long passage, and the White Rabbit was still in -sight, hurrying down it. There was not a moment to be lost: -away went Alice like the wind, and was just in time to hear it -say, as it turned a corner, `Oh my ears and whiskers, how late -it's getting!' She was close behind it when she turned the -corner, but the Rabbit was no longer to be seen: she found -herself in a long, low hall, which was lit up by a row of lamps -hanging from the roof. - - There were doors all round the hall, but they were all locked; -and when Alice had been all the way down one side and up the -other, trying every door, she walked sadly down the middle, -wondering how she was ever to get out again. - - Suddenly she came upon a little three-legged table, all made of -solid glass; there was nothing on it except a tiny golden key, -and Alice's first thought was that it might belong to one of the -doors of the hall; but, alas! either the locks were too large, or -the key was too small, but at any rate it would not open any of -them. However, on the second time round, she came upon a low -curtain she had not noticed before, and behind it was a little -door about fifteen inches high: she tried the little golden key -in the lock, and to her great delight it fitted! - - Alice opened the door and found that it led into a small -passage, not much larger than a rat-hole: she knelt down and -looked along the passage into the loveliest garden you ever saw. -How she longed to get out of that dark hall, and wander about -among those beds of bright flowers and those cool fountains, but -she could not even get her head though the doorway; `and even if -my head would go through,' thought poor Alice, `it would be of -very little use without my shoulders. Oh, how I wish -I could shut up like a telescope! I think I could, if I only -know how to begin.' For, you see, so many out-of-the-way things -had happened lately, that Alice had begun to think that very few -things indeed were really impossible. - - There seemed to be no use in waiting by the little door, so she -went back to the table, half hoping she might find another key on -it, or at any rate a book of rules for shutting people up like -telescopes: this time she found a little bottle on it, (`which -certainly was not here before,' said Alice,) and round the neck -of the bottle was a paper label, with the words `DRINK ME' -beautifully printed on it in large letters. - - It was all very well to say `Drink me,' but the wise little -Alice was not going to do THAT in a hurry. `No, I'll look -first,' she said, `and see whether it's marked "poison" or not'; -for she had read several nice little histories about children who -had got burnt, and eaten up by wild beasts and other unpleasant -things, all because they WOULD not remember the simple rules -their friends had taught them: such as, that a red-hot poker -will burn you if you hold it too long; and that if you cut your -finger VERY deeply with a knife, it usually bleeds; and she had -never forgotten that, if you drink much from a bottle marked -`poison,' it is almost certain to disagree with you, sooner or -later. - - However, this bottle was NOT marked `poison,' so Alice ventured -to taste it, and finding it very nice, (it had, in fact, a sort -of mixed flavour of cherry-tart, custard, pine-apple, roast -turkey, toffee, and hot buttered toast,) she very soon finished -it off. - - * * * * * * * - - * * * * * * - - * * * * * * * - - `What a curious feeling!' said Alice; `I must be shutting up -like a telescope.' - - And so it was indeed: she was now only ten inches high, and -her face brightened up at the thought that she was now the right -size for going though the little door into that lovely garden. -First, however, she waited for a few minutes to see if she was -going to shrink any further: she felt a little nervous about -this; `for it might end, you know,' said Alice to herself, `in my -going out altogether, like a candle. I wonder what I should be -like then?' And she tried to fancy what the flame of a candle is -like after the candle is blown out, for she could not remember -ever having seen such a thing. - - After a while, finding that nothing more happened, she decided -on going into the garden at once; but, alas for poor Alice! when -she got to the door, she found he had forgotten the little golden -key, and when she went back to the table for it, she found she -could not possibly reach it: she could see it quite plainly -through the glass, and she tried her best to climb up one of the -legs of the table, but it was too slippery; and when she had -tired herself out with trying, the poor little thing sat down and -cried. - - `Come, there's no use in crying like that!' said Alice to -herself, rather sharply; `I advise you to leave off this minute!' -She generally gave herself very good advice, (though she very -seldom followed it), and sometimes she scolded herself so -severely as to bring tears into her eyes; and once she remembered -trying to box her own ears for having cheated herself in a game -of croquet she was playing against herself, for this curious -child was very fond of pretending to be two people. `But it's no -use now,' thought poor Alice, `to pretend to be two people! Why, -there's hardly enough of me left to make ONE respectable -person!' - - Soon her eye fell on a little glass box that was lying under -the table: she opened it, and found in it a very small cake, on -which the words `EAT ME' were beautifully marked in currants. -`Well, I'll eat it,' said Alice, `and if it makes me grow larger, -I can reach the key; and if it makes me grow smaller, I can creep -under the door; so either way I'll get into the garden, and I -don't care which happens!' - - She ate a little bit, and said anxiously to herself, `Which -way? Which way?', holding her hand on the top of her head to -feel which way it was growing, and she was quite surprised to -find that she remained the same size: to be sure, this generally -happens when one eats cake, but Alice had got so much into the -way of expecting nothing but out-of-the-way things to happen, -that it seemed quite dull and stupid for life to go on in the -common way. - - So she set to work, and very soon finished off the cake. - - * * * * * * * - - * * * * * * - - * * * * * * * - - - - - CHAPTER II - - The Pool of Tears - - - `Curiouser and curiouser!' cried Alice (she was so much -surprised, that for the moment she quite forgot how to speak good -English); `now I'm opening out like the largest telescope that -ever was! Good-bye, feet!' (for when she looked down at her -feet, they seemed to be almost out of sight, they were getting so -far off). `Oh, my poor little feet, I wonder who will put on -your shoes and stockings for you now, dears? I'm sure _I_ shan't -be able! I shall be a great deal too far off to trouble myself -about you: you must manage the best way you can; --but I must be -kind to them,' thought Alice, `or perhaps they won't walk the -way I want to go! Let me see: I'll give them a new pair of -boots every Christmas.' - - And she went on planning to herself how she would manage it. -`They must go by the carrier,' she thought; `and how funny it'll -seem, sending presents to one's own feet! And how odd the -directions will look! - - ALICE'S RIGHT FOOT, ESQ. - HEARTHRUG, - NEAR THE FENDER, - (WITH ALICE'S LOVE). - -Oh dear, what nonsense I'm talking!' - - Just then her head struck against the roof of the hall: in -fact she was now more than nine feet high, and she at once took -up the little golden key and hurried off to the garden door. - - Poor Alice! It was as much as she could do, lying down on one -side, to look through into the garden with one eye; but to get -through was more hopeless than ever: she sat down and began to -cry again. - - `You ought to be ashamed of yourself,' said Alice, `a great -girl like you,' (she might well say this), `to go on crying in -this way! Stop this moment, I tell you!' But she went on all -the same, shedding gallons of tears, until there was a large pool -all round her, about four inches deep and reaching half down the -hall. - - After a time she heard a little pattering of feet in the -distance, and she hastily dried her eyes to see what was coming. -It was the White Rabbit returning, splendidly dressed, with a -pair of white kid gloves in one hand and a large fan in the -other: he came trotting along in a great hurry, muttering to -himself as he came, `Oh! the Duchess, the Duchess! Oh! won't she -be savage if I've kept her waiting!' Alice felt so desperate -that she was ready to ask help of any one; so, when the Rabbit -came near her, she began, in a low, timid voice, `If you please, -sir--' The Rabbit started violently, dropped the white kid -gloves and the fan, and skurried away into the darkness as hard -as he could go. - - Alice took up the fan and gloves, and, as the hall was very -hot, she kept fanning herself all the time she went on talking: -`Dear, dear! How queer everything is to-day! And yesterday -things went on just as usual. I wonder if I've been changed in -the night? Let me think: was I the same when I got up this -morning? I almost think I can remember feeling a little -different. But if I'm not the same, the next question is, Who in -the world am I? Ah, THAT'S the great puzzle!' And she began -thinking over all the children she knew that were of the same age -as herself, to see if she could have been changed for any of -them. - - `I'm sure I'm not Ada,' she said, `for her hair goes in such -long ringlets, and mine doesn't go in ringlets at all; and I'm -sure I can't be Mabel, for I know all sorts of things, and she, -oh! she knows such a very little! Besides, SHE'S she, and I'm I, -and--oh dear, how puzzling it all is! I'll try if I know all the -things I used to know. Let me see: four times five is twelve, -and four times six is thirteen, and four times seven is--oh dear! -I shall never get to twenty at that rate! However, the -Multiplication Table doesn't signify: let's try Geography. -London is the capital of Paris, and Paris is the capital of Rome, -and Rome--no, THAT'S all wrong, I'm certain! I must have been -changed for Mabel! I'll try and say "How doth the little--"' -and she crossed her hands on her lap as if she were saying lessons, -and began to repeat it, but her voice sounded hoarse and -strange, and the words did not come the same as they used to do:-- - - `How doth the little crocodile - Improve his shining tail, - And pour the waters of the Nile - On every golden scale! - - `How cheerfully he seems to grin, - How neatly spread his claws, - And welcome little fishes in - With gently smiling jaws!' - - `I'm sure those are not the right words,' said poor Alice, and -her eyes filled with tears again as she went on, `I must be Mabel -after all, and I shall have to go and live in that poky little -house, and have next to no toys to play with, and oh! ever so -many lessons to learn! No, I've made up my mind about it; if I'm -Mabel, I'll stay down here! It'll be no use their putting their -heads down and saying "Come up again, dear!" I shall only look -up and say "Who am I then? Tell me that first, and then, if I -like being that person, I'll come up: if not, I'll stay down -here till I'm somebody else"--but, oh dear!' cried Alice, with a -sudden burst of tears, `I do wish they WOULD put their heads -down! I am so VERY tired of being all alone here!' - - As she said this she looked down at her hands, and was -surprised to see that she had put on one of the Rabbit's little -white kid gloves while she was talking. `How CAN I have done -that?' she thought. `I must be growing small again.' She got up -and went to the table to measure herself by it, and found that, -as nearly as she could guess, she was now about two feet high, -and was going on shrinking rapidly: she soon found out that the -cause of this was the fan she was holding, and she dropped it -hastily, just in time to avoid shrinking away altogether. - -`That WAS a narrow escape!' said Alice, a good deal frightened at -the sudden change, but very glad to find herself still in -existence; `and now for the garden!' and she ran with all speed -back to the little door: but, alas! the little door was shut -again, and the little golden key was lying on the glass table as -before, `and things are worse than ever,' thought the poor child, -`for I never was so small as this before, never! And I declare -it's too bad, that it is!' - - As she said these words her foot slipped, and in another -moment, splash! she was up to her chin in salt water. He first -idea was that she had somehow fallen into the sea, `and in that -case I can go back by railway,' she said to herself. (Alice had -been to the seaside once in her life, and had come to the general -conclusion, that wherever you go to on the English coast you find -a number of bathing machines in the sea, some children digging in -the sand with wooden spades, then a row of lodging houses, and -behind them a railway station.) However, she soon made out that -she was in the pool of tears which she had wept when she was nine -feet high. - - `I wish I hadn't cried so much!' said Alice, as she swam about, -trying to find her way out. `I shall be punished for it now, I -suppose, by being drowned in my own tears! That WILL be a queer -thing, to be sure! However, everything is queer to-day.' - - Just then she heard something splashing about in the pool a -little way off, and she swam nearer to make out what it was: at -first she thought it must be a walrus or hippopotamus, but then -she remembered how small she was now, and she soon made out that -it was only a mouse that had slipped in like herself. - - `Would it be of any use, now,' thought Alice, `to speak to this -mouse? Everything is so out-of-the-way down here, that I should -think very likely it can talk: at any rate, there's no harm in -trying.' So she began: `O Mouse, do you know the way out of -this pool? I am very tired of swimming about here, O Mouse!' -(Alice thought this must be the right way of speaking to a mouse: -she had never done such a thing before, but she remembered having -seen in her brother's Latin Grammar, `A mouse--of a mouse--to a -mouse--a mouse--O mouse!' The Mouse looked at her rather -inquisitively, and seemed to her to wink with one of its little -eyes, but it said nothing. - - `Perhaps it doesn't understand English,' thought Alice; `I -daresay it's a French mouse, come over with William the -Conqueror.' (For, with all her knowledge of history, Alice had -no very clear notion how long ago anything had happened.) So she -began again: `Ou est ma chatte?' which was the first sentence in -her French lesson-book. The Mouse gave a sudden leap out of the -water, and seemed to quiver all over with fright. `Oh, I beg -your pardon!' cried Alice hastily, afraid that she had hurt the -poor animal's feelings. `I quite forgot you didn't like cats.' - - `Not like cats!' cried the Mouse, in a shrill, passionate -voice. `Would YOU like cats if you were me?' - - `Well, perhaps not,' said Alice in a soothing tone: `don't be -angry about it. And yet I wish I could show you our cat Dinah: -I think you'd take a fancy to cats if you could only see her. -She is such a dear quiet thing,' Alice went on, half to herself, -as she swam lazily about in the pool, `and she sits purring so -nicely by the fire, licking her paws and washing her face--and -she is such a nice soft thing to nurse--and she's such a capital -one for catching mice--oh, I beg your pardon!' cried Alice again, -for this time the Mouse was bristling all over, and she felt -certain it must be really offended. `We won't talk about her any -more if you'd rather not.' - - `We indeed!' cried the Mouse, who was trembling down to the end -of his tail. `As if I would talk on such a subject! Our family -always HATED cats: nasty, low, vulgar things! Don't let me hear -the name again!' - - `I won't indeed!' said Alice, in a great hurry to change the -subject of conversation. `Are you--are you fond--of--of dogs?' -The Mouse did not answer, so Alice went on eagerly: `There is -such a nice little dog near our house I should like to show you! -A little bright-eyed terrier, you know, with oh, such long curly -brown hair! And it'll fetch things when you throw them, and -it'll sit up and beg for its dinner, and all sorts of things--I -can't remember half of them--and it belongs to a farmer, you -know, and he says it's so useful, it's worth a hundred pounds! -He says it kills all the rats and--oh dear!' cried Alice in a -sorrowful tone, `I'm afraid I've offended it again!' For the -Mouse was swimming away from her as hard as it could go, and -making quite a commotion in the pool as it went. - - So she called softly after it, `Mouse dear! Do come back -again, and we won't talk about cats or dogs either, if you don't -like them!' When the Mouse heard this, it turned round and swam -slowly back to her: its face was quite pale (with passion, Alice -thought), and it said in a low trembling voice, `Let us get to -the shore, and then I'll tell you my history, and you'll -understand why it is I hate cats and dogs.' - - It was high time to go, for the pool was getting quite crowded -with the birds and animals that had fallen into it: there were a -Duck and a Dodo, a Lory and an Eaglet, and several other curious -creatures. Alice led the way, and the whole party swam to the -shore. - - - - CHAPTER III - - A Caucus-Race and a Long Tale - - - They were indeed a queer-looking party that assembled on the -bank--the birds with draggled feathers, the animals with their -fur clinging close to them, and all dripping wet, cross, and -uncomfortable. - - The first question of course was, how to get dry again: they -had a consultation about this, and after a few minutes it seemed -quite natural to Alice to find herself talking familiarly with -them, as if she had known them all her life. Indeed, she had -quite a long argument with the Lory, who at last turned sulky, -and would only say, `I am older than you, and must know better'; -and this Alice would not allow without knowing how old it was, -and, as the Lory positively refused to tell its age, there was no -more to be said. - - At last the Mouse, who seemed to be a person of authority among -them, called out, `Sit down, all of you, and listen to me! I'LL -soon make you dry enough!' They all sat down at once, in a large -ring, with the Mouse in the middle. Alice kept her eyes -anxiously fixed on it, for she felt sure she would catch a bad -cold if she did not get dry very soon. - - `Ahem!' said the Mouse with an important air, `are you all ready? -This is the driest thing I know. Silence all round, if you please! -"William the Conqueror, whose cause was favoured by the pope, was -soon submitted to by the English, who wanted leaders, and had been -of late much accustomed to usurpation and conquest. Edwin and -Morcar, the earls of Mercia and Northumbria--"' - - `Ugh!' said the Lory, with a shiver. - - `I beg your pardon!' said the Mouse, frowning, but very -politely: `Did you speak?' - - `Not I!' said the Lory hastily. - - `I thought you did,' said the Mouse. `--I proceed. "Edwin and -Morcar, the earls of Mercia and Northumbria, declared for him: -and even Stigand, the patriotic archbishop of Canterbury, found -it advisable--"' - - `Found WHAT?' said the Duck. - - `Found IT,' the Mouse replied rather crossly: `of course you -know what "it" means.' - - `I know what "it" means well enough, when I find a thing,' said -the Duck: `it's generally a frog or a worm. The question is, -what did the archbishop find?' - - The Mouse did not notice this question, but hurriedly went on, -`"--found it advisable to go with Edgar Atheling to meet William -and offer him the crown. William's conduct at first was -moderate. But the insolence of his Normans--" How are you -getting on now, my dear?' it continued, turning to Alice as it -spoke. - - `As wet as ever,' said Alice in a melancholy tone: `it doesn't -seem to dry me at all.' - - `In that case,' said the Dodo solemnly, rising to its feet, `I -move that the meeting adjourn, for the immediate adoption of more -energetic remedies--' - - `Speak English!' said the Eaglet. `I don't know the meaning of -half those long words, and, what's more, I don't believe you do -either!' And the Eaglet bent down its head to hide a smile: -some of the other birds tittered audibly. - - `What I was going to say,' said the Dodo in an offended tone, -`was, that the best thing to get us dry would be a Caucus-race.' - - `What IS a Caucus-race?' said Alice; not that she wanted much -to know, but the Dodo had paused as if it thought that SOMEBODY -ought to speak, and no one else seemed inclined to say anything. - - `Why,' said the Dodo, `the best way to explain it is to do it.' -(And, as you might like to try the thing yourself, some winter -day, I will tell you how the Dodo managed it.) - - First it marked out a race-course, in a sort of circle, (`the -exact shape doesn't matter,' it said,) and then all the party -were placed along the course, here and there. There was no `One, -two, three, and away,' but they began running when they liked, -and left off when they liked, so that it was not easy to know -when the race was over. However, when they had been running half -an hour or so, and were quite dry again, the Dodo suddenly called -out `The race is over!' and they all crowded round it, panting, -and asking, `But who has won?' - - This question the Dodo could not answer without a great deal of -thought, and it sat for a long time with one finger pressed upon -its forehead (the position in which you usually see Shakespeare, -in the pictures of him), while the rest waited in silence. At -last the Dodo said, `EVERYBODY has won, and all must have -prizes.' - - `But who is to give the prizes?' quite a chorus of voices -asked. - - `Why, SHE, of course,' said the Dodo, pointing to Alice with -one finger; and the whole party at once crowded round her, -calling out in a confused way, `Prizes! Prizes!' - - Alice had no idea what to do, and in despair she put her hand -in her pocket, and pulled out a box of comfits, (luckily the salt -water had not got into it), and handed them round as prizes. -There was exactly one a-piece all round. - - `But she must have a prize herself, you know,' said the Mouse. - - `Of course,' the Dodo replied very gravely. `What else have -you got in your pocket?' he went on, turning to Alice. - - `Only a thimble,' said Alice sadly. - - `Hand it over here,' said the Dodo. - - Then they all crowded round her once more, while the Dodo -solemnly presented the thimble, saying `We beg your acceptance of -this elegant thimble'; and, when it had finished this short -speech, they all cheered. - - Alice thought the whole thing very absurd, but they all looked -so grave that she did not dare to laugh; and, as she could not -think of anything to say, she simply bowed, and took the thimble, -looking as solemn as she could. - - The next thing was to eat the comfits: this caused some noise -and confusion, as the large birds complained that they could not -taste theirs, and the small ones choked and had to be patted on -the back. However, it was over at last, and they sat down again -in a ring, and begged the Mouse to tell them something more. - - `You promised to tell me your history, you know,' said Alice, -`and why it is you hate--C and D,' she added in a whisper, half -afraid that it would be offended again. - - `Mine is a long and a sad tale!' said the Mouse, turning to -Alice, and sighing. - - `It IS a long tail, certainly,' said Alice, looking down with -wonder at the Mouse's tail; `but why do you call it sad?' And -she kept on puzzling about it while the Mouse was speaking, so -that her idea of the tale was something like this:-- - - `Fury said to a - mouse, That he - met in the - house, - "Let us - both go to - law: I will - prosecute - YOU. --Come, - I'll take no - denial; We - must have a - trial: For - really this - morning I've - nothing - to do." - Said the - mouse to the - cur, "Such - a trial, - dear Sir, - With - no jury - or judge, - would be - wasting - our - breath." - "I'll be - judge, I'll - be jury," - Said - cunning - old Fury: - "I'll - try the - whole - cause, - and - condemn - you - to - death."' - - - `You are not attending!' said the Mouse to Alice severely. -`What are you thinking of?' - - `I beg your pardon,' said Alice very humbly: `you had got to -the fifth bend, I think?' - - `I had NOT!' cried the Mouse, sharply and very angrily. - - `A knot!' said Alice, always ready to make herself useful, and -looking anxiously about her. `Oh, do let me help to undo it!' - - `I shall do nothing of the sort,' said the Mouse, getting up -and walking away. `You insult me by talking such nonsense!' - - `I didn't mean it!' pleaded poor Alice. `But you're so easily -offended, you know!' - - The Mouse only growled in reply. - - `Please come back and finish your story!' Alice called after -it; and the others all joined in chorus, `Yes, please do!' but -the Mouse only shook its head impatiently, and walked a little -quicker. - - `What a pity it wouldn't stay!' sighed the Lory, as soon as it -was quite out of sight; and an old Crab took the opportunity of -saying to her daughter `Ah, my dear! Let this be a lesson to you -never to lose YOUR temper!' `Hold your tongue, Ma!' said the -young Crab, a little snappishly. `You're enough to try the -patience of an oyster!' - - `I wish I had our Dinah here, I know I do!' said Alice aloud, -addressing nobody in particular. `She'd soon fetch it back!' - - `And who is Dinah, if I might venture to ask the question?' -said the Lory. - - Alice replied eagerly, for she was always ready to talk about -her pet: `Dinah's our cat. And she's such a capital one for -catching mice you can't think! And oh, I wish you could see her -after the birds! Why, she'll eat a little bird as soon as look -at it!' - - This speech caused a remarkable sensation among the party. -Some of the birds hurried off at once: one the old Magpie began -wrapping itself up very carefully, remarking, `I really must be -getting home; the night-air doesn't suit my throat!' and a Canary -called out in a trembling voice to its children, `Come away, my -dears! It's high time you were all in bed!' On various pretexts -they all moved off, and Alice was soon left alone. - - `I wish I hadn't mentioned Dinah!' she said to herself in a -melancholy tone. `Nobody seems to like her, down here, and I'm -sure she's the best cat in the world! Oh, my dear Dinah! I -wonder if I shall ever see you any more!' And here poor Alice -began to cry again, for she felt very lonely and low-spirited. -In a little while, however, she again heard a little pattering of -footsteps in the distance, and she looked up eagerly, half hoping -that the Mouse had changed his mind, and was coming back to -finish his story. - - - - CHAPTER IV - - The Rabbit Sends in a Little Bill - - - It was the White Rabbit, trotting slowly back again, and -looking anxiously about as it went, as if it had lost something; -and she heard it muttering to itself `The Duchess! The Duchess! -Oh my dear paws! Oh my fur and whiskers! She'll get me -executed, as sure as ferrets are ferrets! Where CAN I have -dropped them, I wonder?' Alice guessed in a moment that it was -looking for the fan and the pair of white kid gloves, and she -very good-naturedly began hunting about for them, but they were -nowhere to be seen--everything seemed to have changed since her -swim in the pool, and the great hall, with the glass table and -the little door, had vanished completely. - - Very soon the Rabbit noticed Alice, as she went hunting about, -and called out to her in an angry tone, `Why, Mary Ann, what ARE -you doing out here? Run home this moment, and fetch me a pair of -gloves and a fan! Quick, now!' And Alice was so much frightened -that she ran off at once in the direction it pointed to, without -trying to explain the mistake it had made. - - `He took me for his housemaid,' she said to herself as she ran. -`How surprised he'll be when he finds out who I am! But I'd -better take him his fan and gloves--that is, if I can find them.' -As she said this, she came upon a neat little house, on the door -of which was a bright brass plate with the name `W. RABBIT' -engraved upon it. She went in without knocking, and hurried -upstairs, in great fear lest she should meet the real Mary Ann, -and be turned out of the house before she had found the fan and -gloves. - - `How queer it seems,' Alice said to herself, `to be going -messages for a rabbit! I suppose Dinah'll be sending me on -messages next!' And she began fancying the sort of thing that -would happen: `"Miss Alice! Come here directly, and get ready -for your walk!" "Coming in a minute, nurse! But I've got to see -that the mouse doesn't get out." Only I don't think,' Alice went -on, `that they'd let Dinah stop in the house if it began ordering -people about like that!' - - By this time she had found her way into a tidy little room with -a table in the window, and on it (as she had hoped) a fan and two -or three pairs of tiny white kid gloves: she took up the fan and -a pair of the gloves, and was just going to leave the room, when -her eye fell upon a little bottle that stood near the looking- -glass. There was no label this time with the words `DRINK ME,' -but nevertheless she uncorked it and put it to her lips. `I know -SOMETHING interesting is sure to happen,' she said to herself, -`whenever I eat or drink anything; so I'll just see what this -bottle does. I do hope it'll make me grow large again, for -really I'm quite tired of being such a tiny little thing!' - - It did so indeed, and much sooner than she had expected: -before she had drunk half the bottle, she found her head pressing -against the ceiling, and had to stoop to save her neck from being -broken. She hastily put down the bottle, saying to herself -`That's quite enough--I hope I shan't grow any more--As it is, I -can't get out at the door--I do wish I hadn't drunk quite so -much!' - - Alas! it was too late to wish that! She went on growing, and -growing, and very soon had to kneel down on the floor: in -another minute there was not even room for this, and she tried -the effect of lying down with one elbow against the door, and the -other arm curled round her head. Still she went on growing, and, -as a last resource, she put one arm out of the window, and one -foot up the chimney, and said to herself `Now I can do no more, -whatever happens. What WILL become of me?' - - Luckily for Alice, the little magic bottle had now had its full -effect, and she grew no larger: still it was very uncomfortable, -and, as there seemed to be no sort of chance of her ever getting -out of the room again, no wonder she felt unhappy. - - `It was much pleasanter at home,' thought poor Alice, `when one -wasn't always growing larger and smaller, and being ordered about -by mice and rabbits. I almost wish I hadn't gone down that -rabbit-hole--and yet--and yet--it's rather curious, you know, -this sort of life! I do wonder what CAN have happened to me! -When I used to read fairy-tales, I fancied that kind of thing -never happened, and now here I am in the middle of one! There -ought to be a book written about me, that there ought! And when -I grow up, I'll write one--but I'm grown up now,' she added in a -sorrowful tone; `at least there's no room to grow up any more -HERE.' - - `But then,' thought Alice, `shall I NEVER get any older than I -am now? That'll be a comfort, one way--never to be an old woman- --but then--always to have lessons to learn! Oh, I shouldn't like -THAT!' - - `Oh, you foolish Alice!' she answered herself. `How can you -learn lessons in here? Why, there's hardly room for YOU, and no -room at all for any lesson-books!' - - And so she went on, taking first one side and then the other, -and making quite a conversation of it altogether; but after a few -minutes she heard a voice outside, and stopped to listen. - - `Mary Ann! Mary Ann!' said the voice. `Fetch me my gloves -this moment!' Then came a little pattering of feet on the -stairs. Alice knew it was the Rabbit coming to look for her, and -she trembled till she shook the house, quite forgetting that she -was now about a thousand times as large as the Rabbit, and had no -reason to be afraid of it. - - Presently the Rabbit came up to the door, and tried to open it; -but, as the door opened inwards, and Alice's elbow was pressed -hard against it, that attempt proved a failure. Alice heard it -say to itself `Then I'll go round and get in at the window.' - - `THAT you won't' thought Alice, and, after waiting till she -fancied she heard the Rabbit just under the window, she suddenly -spread out her hand, and made a snatch in the air. She did not -get hold of anything, but she heard a little shriek and a fall, -and a crash of broken glass, from which she concluded that it was -just possible it had fallen into a cucumber-frame, or something -of the sort. - - Next came an angry voice--the Rabbit's--`Pat! Pat! Where are -you?' And then a voice she had never heard before, `Sure then -I'm here! Digging for apples, yer honour!' - - `Digging for apples, indeed!' said the Rabbit angrily. `Here! -Come and help me out of THIS!' (Sounds of more broken glass.) - - `Now tell me, Pat, what's that in the window?' - - `Sure, it's an arm, yer honour!' (He pronounced it `arrum.') - - `An arm, you goose! Who ever saw one that size? Why, it -fills the whole window!' - - `Sure, it does, yer honour: but it's an arm for all that.' - - `Well, it's got no business there, at any rate: go and take it -away!' - - There was a long silence after this, and Alice could only hear -whispers now and then; such as, `Sure, I don't like it, yer -honour, at all, at all!' `Do as I tell you, you coward!' and at -last she spread out her hand again, and made another snatch in -the air. This time there were TWO little shrieks, and more -sounds of broken glass. `What a number of cucumber-frames there -must be!' thought Alice. `I wonder what they'll do next! As for -pulling me out of the window, I only wish they COULD! I'm sure I -don't want to stay in here any longer!' - - She waited for some time without hearing anything more: at -last came a rumbling of little cartwheels, and the sound of a -good many voice all talking together: she made out the words: -`Where's the other ladder?--Why, I hadn't to bring but one; -Bill's got the other--Bill! fetch it here, lad!--Here, put 'em up -at this corner--No, tie 'em together first--they don't reach half -high enough yet--Oh! they'll do well enough; don't be particular- --Here, Bill! catch hold of this rope--Will the roof bear?--Mind -that loose slate--Oh, it's coming down! Heads below!' (a loud -crash)--`Now, who did that?--It was Bill, I fancy--Who's to go -down the chimney?--Nay, I shan't! YOU do it!--That I won't, -then!--Bill's to go down--Here, Bill! the master says you're to -go down the chimney!' - - `Oh! So Bill's got to come down the chimney, has he?' said -Alice to herself. `Shy, they seem to put everything upon Bill! -I wouldn't be in Bill's place for a good deal: this fireplace is -narrow, to be sure; but I THINK I can kick a little!' - - She drew her foot as far down the chimney as she could, and -waited till she heard a little animal (she couldn't guess of what -sort it was) scratching and scrambling about in the chimney close -above her: then, saying to herself `This is Bill,' she gave one -sharp kick, and waited to see what would happen next. - - The first thing she heard was a general chorus of `There goes -Bill!' then the Rabbit's voice along--`Catch him, you by the -hedge!' then silence, and then another confusion of voices--`Hold -up his head--Brandy now--Don't choke him--How was it, old fellow? -What happened to you? Tell us all about it!' - - Last came a little feeble, squeaking voice, (`That's Bill,' -thought Alice,) `Well, I hardly know--No more, thank ye; I'm -better now--but I'm a deal too flustered to tell you--all I know -is, something comes at me like a Jack-in-the-box, and up I goes -like a sky-rocket!' - - `So you did, old fellow!' said the others. - - `We must burn the house down!' said the Rabbit's voice; and -Alice called out as loud as she could, `If you do. I'll set -Dinah at you!' - - There was a dead silence instantly, and Alice thought to -herself, `I wonder what they WILL do next! If they had any -sense, they'd take the roof off.' After a minute or two, they -began moving about again, and Alice heard the Rabbit say, `A -barrowful will do, to begin with.' - - `A barrowful of WHAT?' thought Alice; but she had not long to -doubt, for the next moment a shower of little pebbles came -rattling in at the window, and some of them hit her in the face. -`I'll put a stop to this,' she said to herself, and shouted out, -`You'd better not do that again!' which produced another dead -silence. - - Alice noticed with some surprise that the pebbles were all -turning into little cakes as they lay on the floor, and a bright -idea came into her head. `If I eat one of these cakes,' she -thought, `it's sure to make SOME change in my size; and as it -can't possibly make me larger, it must make me smaller, I -suppose.' - - So she swallowed one of the cakes, and was delighted to find -that she began shrinking directly. As soon as she was small -enough to get through the door, she ran out of the house, and -found quite a crowd of little animals and birds waiting outside. -The poor little Lizard, Bill, was in the middle, being held up by -two guinea-pigs, who were giving it something out of a bottle. -They all made a rush at Alice the moment she appeared; but she -ran off as hard as she could, and soon found herself safe in a -thick wood. - - `The first thing I've got to do,' said Alice to herself, as she -wandered about in the wood, `is to grow to my right size again; -and the second thing is to find my way into that lovely garden. -I think that will be the best plan.' - - It sounded an excellent plan, no doubt, and very neatly and -simply arranged; the only difficulty was, that she had not the -smallest idea how to set about it; and while she was peering -about anxiously among the trees, a little sharp bark just over -her head made her look up in a great hurry. - - An enormous puppy was looking down at her with large round -eyes, and feebly stretching out one paw, trying to touch her. -`Poor little thing!' said Alice, in a coaxing tone, and she tried -hard to whistle to it; but she was terribly frightened all the -time at the thought that it might be hungry, in which case it -would be very likely to eat her up in spite of all her coaxing. - - Hardly knowing what she did, she picked up a little bit of -stick, and held it out to the puppy; whereupon the puppy jumped -into the air off all its feet at once, with a yelp of delight, -and rushed at the stick, and made believe to worry it; then Alice -dodged behind a great thistle, to keep herself from being run -over; and the moment she appeared on the other side, the puppy -made another rush at the stick, and tumbled head over heels in -its hurry to get hold of it; then Alice, thinking it was very -like having a game of play with a cart-horse, and expecting every -moment to be trampled under its feet, ran round the thistle -again; then the puppy began a series of short charges at the -stick, running a very little way forwards each time and a long -way back, and barking hoarsely all the while, till at last it sat -down a good way off, panting, with its tongue hanging out of its -mouth, and its great eyes half shut. - - This seemed to Alice a good opportunity for making her escape; -so she set off at once, and ran till she was quite tired and out -of breath, and till the puppy's bark sounded quite faint in the -distance. - - `And yet what a dear little puppy it was!' said Alice, as she -leant against a buttercup to rest herself, and fanned herself -with one of the leaves: `I should have liked teaching it tricks -very much, if--if I'd only been the right size to do it! Oh -dear! I'd nearly forgotten that I've got to grow up again! Let -me see--how IS it to be managed? I suppose I ought to eat or -drink something or other; but the great question is, what?' - - The great question certainly was, what? Alice looked all round -her at the flowers and the blades of grass, but she did not see -anything that looked like the right thing to eat or drink under -the circumstances. There was a large mushroom growing near her, -about the same height as herself; and when she had looked under -it, and on both sides of it, and behind it, it occurred to her -that she might as well look and see what was on the top of it. - - She stretched herself up on tiptoe, and peeped over the edge of -the mushroom, and her eyes immediately met those of a large -caterpillar, that was sitting on the top with its arms folded, -quietly smoking a long hookah, and taking not the smallest notice -of her or of anything else. - - - - CHAPTER V - - Advice from a Caterpillar - - - The Caterpillar and Alice looked at each other for some time in -silence: at last the Caterpillar took the hookah out of its -mouth, and addressed her in a languid, sleepy voice. - - `Who are YOU?' said the Caterpillar. - - This was not an encouraging opening for a conversation. Alice -replied, rather shyly, `I--I hardly know, sir, just at present-- -at least I know who I WAS when I got up this morning, but I think -I must have been changed several times since then.' - - `What do you mean by that?' said the Caterpillar sternly. -`Explain yourself!' - - `I can't explain MYSELF, I'm afraid, sir' said Alice, `because -I'm not myself, you see.' - - `I don't see,' said the Caterpillar. - - `I'm afraid I can't put it more clearly,' Alice replied very -politely, `for I can't understand it myself to begin with; and -being so many different sizes in a day is very confusing.' - - `It isn't,' said the Caterpillar. - - `Well, perhaps you haven't found it so yet,' said Alice; `but -when you have to turn into a chrysalis--you will some day, you -know--and then after that into a butterfly, I should think you'll -feel it a little queer, won't you?' - - `Not a bit,' said the Caterpillar. - - `Well, perhaps your feelings may be different,' said Alice; -`all I know is, it would feel very queer to ME.' - - `You!' said the Caterpillar contemptuously. `Who are YOU?' - - Which brought them back again to the beginning of the -conversation. Alice felt a little irritated at the Caterpillar's -making such VERY short remarks, and she drew herself up and said, -very gravely, `I think, you ought to tell me who YOU are, first.' - - `Why?' said the Caterpillar. - - Here was another puzzling question; and as Alice could not -think of any good reason, and as the Caterpillar seemed to be in -a VERY unpleasant state of mind, she turned away. - - `Come back!' the Caterpillar called after her. `I've something -important to say!' - - This sounded promising, certainly: Alice turned and came back -again. - - `Keep your temper,' said the Caterpillar. - - `Is that all?' said Alice, swallowing down her anger as well as -she could. - - `No,' said the Caterpillar. - - Alice thought she might as well wait, as she had nothing else -to do, and perhaps after all it might tell her something worth -hearing. For some minutes it puffed away without speaking, but -at last it unfolded its arms, took the hookah out of its mouth -again, and said, `So you think you're changed, do you?' - - `I'm afraid I am, sir,' said Alice; `I can't remember things as -I used--and I don't keep the same size for ten minutes together!' - - `Can't remember WHAT things?' said the Caterpillar. - - `Well, I've tried to say "HOW DOTH THE LITTLE BUSY BEE," but it -all came different!' Alice replied in a very melancholy voice. - - `Repeat, "YOU ARE OLD, FATHER WILLIAM,"' said the Caterpillar. - - Alice folded her hands, and began:-- - - `You are old, Father William,' the young man said, - `And your hair has become very white; - And yet you incessantly stand on your head-- - Do you think, at your age, it is right?' - - `In my youth,' Father William replied to his son, - `I feared it might injure the brain; - But, now that I'm perfectly sure I have none, - Why, I do it again and again.' - - `You are old,' said the youth, `as I mentioned before, - And have grown most uncommonly fat; - Yet you turned a back-somersault in at the door-- - Pray, what is the reason of that?' - - `In my youth,' said the sage, as he shook his grey locks, - `I kept all my limbs very supple - By the use of this ointment--one shilling the box-- - Allow me to sell you a couple?' - - `You are old,' said the youth, `and your jaws are too weak - For anything tougher than suet; - Yet you finished the goose, with the bones and the beak-- - Pray how did you manage to do it?' - - `In my youth,' said his father, `I took to the law, - And argued each case with my wife; - And the muscular strength, which it gave to my jaw, - Has lasted the rest of my life.' - - `You are old,' said the youth, `one would hardly suppose - That your eye was as steady as ever; - Yet you balanced an eel on the end of your nose-- - What made you so awfully clever?' - - `I have answered three questions, and that is enough,' - Said his father; `don't give yourself airs! - Do you think I can listen all day to such stuff? - Be off, or I'll kick you down stairs!' - - - `That is not said right,' said the Caterpillar. - - `Not QUITE right, I'm afraid,' said Alice, timidly; `some of the -words have got altered.' - - `It is wrong from beginning to end,' said the Caterpillar -decidedly, and there was silence for some minutes. - - The Caterpillar was the first to speak. - - `What size do you want to be?' it asked. - - `Oh, I'm not particular as to size,' Alice hastily replied; -`only one doesn't like changing so often, you know.' - - `I DON'T know,' said the Caterpillar. - - Alice said nothing: she had never been so much contradicted in -her life before, and she felt that she was losing her temper. - - `Are you content now?' said the Caterpillar. - - `Well, I should like to be a LITTLE larger, sir, if you -wouldn't mind,' said Alice: `three inches is such a wretched -height to be.' - - `It is a very good height indeed!' said the Caterpillar -angrily, rearing itself upright as it spoke (it was exactly three -inches high). - - `But I'm not used to it!' pleaded poor Alice in a piteous tone. -And she thought of herself, `I wish the creatures wouldn't be so -easily offended!' - - `You'll get used to it in time,' said the Caterpillar; and it -put the hookah into its mouth and began smoking again. - - This time Alice waited patiently until it chose to speak again. -In a minute or two the Caterpillar took the hookah out of its -mouth and yawned once or twice, and shook itself. Then it got -down off the mushroom, and crawled away in the grass, merely -remarking as it went, `One side will make you grow taller, and -the other side will make you grow shorter.' - - `One side of WHAT? The other side of WHAT?' thought Alice to -herself. - - `Of the mushroom,' said the Caterpillar, just as if she had -asked it aloud; and in another moment it was out of sight. - - Alice remained looking thoughtfully at the mushroom for a -minute, trying to make out which were the two sides of it; and as -it was perfectly round, she found this a very difficult question. -However, at last she stretched her arms round it as far as they -would go, and broke off a bit of the edge with each hand. - - `And now which is which?' she said to herself, and nibbled a -little of the right-hand bit to try the effect: the next moment -she felt a violent blow underneath her chin: it had struck her -foot! - - She was a good deal frightened by this very sudden change, but -she felt that there was no time to be lost, as she was shrinking -rapidly; so she set to work at once to eat some of the other bit. -Her chin was pressed so closely against her foot, that there was -hardly room to open her mouth; but she did it at last, and -managed to swallow a morsel of the lefthand bit. - - - * * * * * * * - - * * * * * * - - * * * * * * * - - `Come, my head's free at last!' said Alice in a tone of -delight, which changed into alarm in another moment, when she -found that her shoulders were nowhere to be found: all she could -see, when she looked down, was an immense length of neck, which -seemed to rise like a stalk out of a sea of green leaves that lay -far below her. - - `What CAN all that green stuff be?' said Alice. `And where -HAVE my shoulders got to? And oh, my poor hands, how is it I -can't see you?' She was moving them about as she spoke, but no -result seemed to follow, except a little shaking among the -distant green leaves. - - As there seemed to be no chance of getting her hands up to her -head, she tried to get her head down to them, and was delighted -to find that her neck would bend about easily in any direction, -like a serpent. She had just succeeded in curving it down into a -graceful zigzag, and was going to dive in among the leaves, which -she found to be nothing but the tops of the trees under which she -had been wandering, when a sharp hiss made her draw back in a -hurry: a large pigeon had flown into her face, and was beating -her violently with its wings. - - `Serpent!' screamed the Pigeon. - - `I'm NOT a serpent!' said Alice indignantly. `Let me alone!' - - `Serpent, I say again!' repeated the Pigeon, but in a more -subdued tone, and added with a kind of sob, `I've tried every -way, and nothing seems to suit them!' - - `I haven't the least idea what you're talking about,' said -Alice. - - `I've tried the roots of trees, and I've tried banks, and I've -tried hedges,' the Pigeon went on, without attending to her; `but -those serpents! There's no pleasing them!' - - Alice was more and more puzzled, but she thought there was no -use in saying anything more till the Pigeon had finished. - - `As if it wasn't trouble enough hatching the eggs,' said the -Pigeon; `but I must be on the look-out for serpents night and -day! Why, I haven't had a wink of sleep these three weeks!' - - `I'm very sorry you've been annoyed,' said Alice, who was -beginning to see its meaning. - - `And just as I'd taken the highest tree in the wood,' continued -the Pigeon, raising its voice to a shriek, `and just as I was -thinking I should be free of them at last, they must needs come -wriggling down from the sky! Ugh, Serpent!' - - `But I'm NOT a serpent, I tell you!' said Alice. `I'm a--I'm -a--' - - `Well! WHAT are you?' said the Pigeon. `I can see you're -trying to invent something!' - - `I--I'm a little girl,' said Alice, rather doubtfully, as she -remembered the number of changes she had gone through that day. - - `A likely story indeed!' said the Pigeon in a tone of the -deepest contempt. `I've seen a good many little girls in my -time, but never ONE with such a neck as that! No, no! You're a -serpent; and there's no use denying it. I suppose you'll be -telling me next that you never tasted an egg!' - - `I HAVE tasted eggs, certainly,' said Alice, who was a very -truthful child; `but little girls eat eggs quite as much as -serpents do, you know.' - - `I don't believe it,' said the Pigeon; `but if they do, why -then they're a kind of serpent, that's all I can say.' - - This was such a new idea to Alice, that she was quite silent -for a minute or two, which gave the Pigeon the opportunity of -adding, `You're looking for eggs, I know THAT well enough; and -what does it matter to me whether you're a little girl or a -serpent?' - - `It matters a good deal to ME,' said Alice hastily; `but I'm -not looking for eggs, as it happens; and if I was, I shouldn't -want YOURS: I don't like them raw.' - - `Well, be off, then!' said the Pigeon in a sulky tone, as it -settled down again into its nest. Alice crouched down among the -trees as well as she could, for her neck kept getting entangled -among the branches, and every now and then she had to stop and -untwist it. After a while she remembered that she still held the -pieces of mushroom in her hands, and she set to work very -carefully, nibbling first at one and then at the other, and -growing sometimes taller and sometimes shorter, until she had -succeeded in bringing herself down to her usual height. - - It was so long since she had been anything near the right size, -that it felt quite strange at first; but she got used to it in a -few minutes, and began talking to herself, as usual. `Come, -there's half my plan done now! How puzzling all these changes -are! I'm never sure what I'm going to be, from one minute to -another! However, I've got back to my right size: the next -thing is, to get into that beautiful garden--how IS that to be -done, I wonder?' As she said this, she came suddenly upon an -open place, with a little house in it about four feet high. -`Whoever lives there,' thought Alice, `it'll never do to come -upon them THIS size: why, I should frighten them out of their -wits!' So she began nibbling at the righthand bit again, and did -not venture to go near the house till she had brought herself -down to nine inches high. - - - - CHAPTER VI - - Pig and Pepper - - - For a minute or two she stood looking at the house, and -wondering what to do next, when suddenly a footman in livery came -running out of the wood--(she considered him to be a footman -because he was in livery: otherwise, judging by his face only, -she would have called him a fish)--and rapped loudly at the door -with his knuckles. It was opened by another footman in livery, -with a round face, and large eyes like a frog; and both footmen, -Alice noticed, had powdered hair that curled all over their -heads. She felt very curious to know what it was all about, and -crept a little way out of the wood to listen. - - The Fish-Footman began by producing from under his arm a great -letter, nearly as large as himself, and this he handed over to -the other, saying, in a solemn tone, `For the Duchess. An -invitation from the Queen to play croquet.' The Frog-Footman -repeated, in the same solemn tone, only changing the order of the -words a little, `From the Queen. An invitation for the Duchess -to play croquet.' - - Then they both bowed low, and their curls got entangled -together. - - Alice laughed so much at this, that she had to run back into -the wood for fear of their hearing her; and when she next peeped -out the Fish-Footman was gone, and the other was sitting on the -ground near the door, staring stupidly up into the sky. - - Alice went timidly up to the door, and knocked. - - `There's no sort of use in knocking,' said the Footman, `and -that for two reasons. First, because I'm on the same side of the -door as you are; secondly, because they're making such a noise -inside, no one could possibly hear you.' And certainly there was -a most extraordinary noise going on within--a constant howling -and sneezing, and every now and then a great crash, as if a dish -or kettle had been broken to pieces. - - `Please, then,' said Alice, `how am I to get in?' - - `There might be some sense in your knocking,' the Footman went -on without attending to her, `if we had the door between us. For -instance, if you were INSIDE, you might knock, and I could let -you out, you know.' He was looking up into the sky all the time -he was speaking, and this Alice thought decidedly uncivil. `But -perhaps he can't help it,' she said to herself; `his eyes are so -VERY nearly at the top of his head. But at any rate he might -answer questions.--How am I to get in?' she repeated, aloud. - - `I shall sit here,' the Footman remarked, `till tomorrow--' - - At this moment the door of the house opened, and a large plate -came skimming out, straight at the Footman's head: it just -grazed his nose, and broke to pieces against one of the trees -behind him. - - `--or next day, maybe,' the Footman continued in the same tone, -exactly as if nothing had happened. - - `How am I to get in?' asked Alice again, in a louder tone. - - `ARE you to get in at all?' said the Footman. `That's the -first question, you know.' - - It was, no doubt: only Alice did not like to be told so. -`It's really dreadful,' she muttered to herself, `the way all the -creatures argue. It's enough to drive one crazy!' - - The Footman seemed to think this a good opportunity for -repeating his remark, with variations. `I shall sit here,' he -said, `on and off, for days and days.' - - `But what am I to do?' said Alice. - - `Anything you like,' said the Footman, and began whistling. - - `Oh, there's no use in talking to him,' said Alice desperately: -`he's perfectly idiotic!' And she opened the door and went in. - - The door led right into a large kitchen, which was full of -smoke from one end to the other: the Duchess was sitting on a -three-legged stool in the middle, nursing a baby; the cook was -leaning over the fire, stirring a large cauldron which seemed to -be full of soup. - - `There's certainly too much pepper in that soup!' Alice said to -herself, as well as she could for sneezing. - - There was certainly too much of it in the air. Even the -Duchess sneezed occasionally; and as for the baby, it was -sneezing and howling alternately without a moment's pause. The -only things in the kitchen that did not sneeze, were the cook, -and a large cat which was sitting on the hearth and grinning from -ear to ear. - - `Please would you tell me,' said Alice, a little timidly, for -she was not quite sure whether it was good manners for her to -speak first, `why your cat grins like that?' - - `It's a Cheshire cat,' said the Duchess, `and that's why. -Pig!' - - She said the last word with such sudden violence that Alice -quite jumped; but she saw in another moment that it was addressed -to the baby, and not to her, so she took courage, and went on -again:-- - - `I didn't know that Cheshire cats always grinned; in fact, I -didn't know that cats COULD grin.' - - `They all can,' said the Duchess; `and most of 'em do.' - - `I don't know of any that do,' Alice said very politely, -feeling quite pleased to have got into a conversation. - - `You don't know much,' said the Duchess; `and that's a fact.' - - Alice did not at all like the tone of this remark, and thought -it would be as well to introduce some other subject of -conversation. While she was trying to fix on one, the cook took -the cauldron of soup off the fire, and at once set to work -throwing everything within her reach at the Duchess and the baby ---the fire-irons came first; then followed a shower of saucepans, -plates, and dishes. The Duchess took no notice of them even when -they hit her; and the baby was howling so much already, that it -was quite impossible to say whether the blows hurt it or not. - - `Oh, PLEASE mind what you're doing!' cried Alice, jumping up -and down in an agony of terror. `Oh, there goes his PRECIOUS -nose'; as an unusually large saucepan flew close by it, and very -nearly carried it off. - - `If everybody minded their own business,' the Duchess said in a -hoarse growl, `the world would go round a deal faster than it -does.' - - `Which would NOT be an advantage,' said Alice, who felt very -glad to get an opportunity of showing off a little of her -knowledge. `Just think of what work it would make with the day -and night! You see the earth takes twenty-four hours to turn -round on its axis--' - - `Talking of axes,' said the Duchess, `chop off her head!' - - Alice glanced rather anxiously at the cook, to see if she meant -to take the hint; but the cook was busily stirring the soup, and -seemed not to be listening, so she went on again: `Twenty-four -hours, I THINK; or is it twelve? I--' - - `Oh, don't bother ME,' said the Duchess; `I never could abide -figures!' And with that she began nursing her child again, -singing a sort of lullaby to it as she did so, and giving it a -violent shake at the end of every line: - - `Speak roughly to your little boy, - And beat him when he sneezes: - He only does it to annoy, - Because he knows it teases.' - - CHORUS. - - (In which the cook and the baby joined):-- - - `Wow! wow! wow!' - - While the Duchess sang the second verse of the song, she kept -tossing the baby violently up and down, and the poor little thing -howled so, that Alice could hardly hear the words:-- - - `I speak severely to my boy, - I beat him when he sneezes; - For he can thoroughly enjoy - The pepper when he pleases!' - - CHORUS. - - `Wow! wow! wow!' - - `Here! you may nurse it a bit, if you like!' the Duchess said -to Alice, flinging the baby at her as she spoke. `I must go and -get ready to play croquet with the Queen,' and she hurried out of -the room. The cook threw a frying-pan after her as she went out, -but it just missed her. - - Alice caught the baby with some difficulty, as it was a queer- -shaped little creature, and held out its arms and legs in all -directions, `just like a star-fish,' thought Alice. The poor -little thing was snorting like a steam-engine when she caught it, -and kept doubling itself up and straightening itself out again, -so that altogether, for the first minute or two, it was as much -as she could do to hold it. - - As soon as she had made out the proper way of nursing it, -(which was to twist it up into a sort of knot, and then keep -tight hold of its right ear and left foot, so as to prevent its -undoing itself,) she carried it out into the open air. `IF I -don't take this child away with me,' thought Alice, `they're sure -to kill it in a day or two: wouldn't it be murder to leave it -behind?' She said the last words out loud, and the little thing -grunted in reply (it had left off sneezing by this time). `Don't -grunt,' said Alice; `that's not at all a proper way of expressing -yourself.' - - The baby grunted again, and Alice looked very anxiously into -its face to see what was the matter with it. There could be no -doubt that it had a VERY turn-up nose, much more like a snout -than a real nose; also its eyes were getting extremely small for -a baby: altogether Alice did not like the look of the thing at -all. `But perhaps it was only sobbing,' she thought, and looked -into its eyes again, to see if there were any tears. - - No, there were no tears. `If you're going to turn into a pig, -my dear,' said Alice, seriously, `I'll have nothing more to do -with you. Mind now!' The poor little thing sobbed again (or -grunted, it was impossible to say which), and they went on for -some while in silence. - - Alice was just beginning to think to herself, `Now, what am I -to do with this creature when I get it home?' when it grunted -again, so violently, that she looked down into its face in some -alarm. This time there could be NO mistake about it: it was -neither more nor less than a pig, and she felt that it would be -quite absurd for her to carry it further. - - So she set the little creature down, and felt quite relieved to -see it trot away quietly into the wood. `If it had grown up,' -she said to herself, `it would have made a dreadfully ugly child: -but it makes rather a handsome pig, I think.' And she began -thinking over other children she knew, who might do very well as -pigs, and was just saying to herself, `if one only knew the right -way to change them--' when she was a little startled by seeing -the Cheshire Cat sitting on a bough of a tree a few yards off. - - The Cat only grinned when it saw Alice. It looked good- -natured, she thought: still it had VERY long claws and a great -many teeth, so she felt that it ought to be treated with respect. - - `Cheshire Puss,' she began, rather timidly, as she did not at -all know whether it would like the name: however, it only -grinned a little wider. `Come, it's pleased so far,' thought -Alice, and she went on. `Would you tell me, please, which way I -ought to go from here?' - - `That depends a good deal on where you want to get to,' said -the Cat. - - `I don't much care where--' said Alice. - - `Then it doesn't matter which way you go,' said the Cat. - - `--so long as I get SOMEWHERE,' Alice added as an explanation. - - `Oh, you're sure to do that,' said the Cat, `if you only walk -long enough.' - - Alice felt that this could not be denied, so she tried another -question. `What sort of people live about here?' - - `In THAT direction,' the Cat said, waving its right paw round, -`lives a Hatter: and in THAT direction,' waving the other paw, -`lives a March Hare. Visit either you like: they're both mad.' - - `But I don't want to go among mad people,' Alice remarked. - - `Oh, you can't help that,' said the Cat: `we're all mad here. -I'm mad. You're mad.' - - `How do you know I'm mad?' said Alice. - - `You must be,' said the Cat, `or you wouldn't have come here.' - - Alice didn't think that proved it at all; however, she went on -`And how do you know that you're mad?' - - `To begin with,' said the Cat, `a dog's not mad. You grant -that?' - - `I suppose so,' said Alice. - - `Well, then,' the Cat went on, `you see, a dog growls when it's -angry, and wags its tail when it's pleased. Now I growl when I'm -pleased, and wag my tail when I'm angry. Therefore I'm mad.' - - `I call it purring, not growling,' said Alice. - - `Call it what you like,' said the Cat. `Do you play croquet -with the Queen to-day?' - - `I should like it very much,' said Alice, `but I haven't been -invited yet.' - - `You'll see me there,' said the Cat, and vanished. - - Alice was not much surprised at this, she was getting so used -to queer things happening. While she was looking at the place -where it had been, it suddenly appeared again. - - `By-the-bye, what became of the baby?' said the Cat. `I'd -nearly forgotten to ask.' - - `It turned into a pig,' Alice quietly said, just as if it had -come back in a natural way. - - `I thought it would,' said the Cat, and vanished again. - - Alice waited a little, half expecting to see it again, but it -did not appear, and after a minute or two she walked on in the -direction in which the March Hare was said to live. `I've seen -hatters before,' she said to herself; `the March Hare will be -much the most interesting, and perhaps as this is May it won't be -raving mad--at least not so mad as it was in March.' As she said -this, she looked up, and there was the Cat again, sitting on a -branch of a tree. - - `Did you say pig, or fig?' said the Cat. - - `I said pig,' replied Alice; `and I wish you wouldn't keep -appearing and vanishing so suddenly: you make one quite giddy.' - - `All right,' said the Cat; and this time it vanished quite -slowly, beginning with the end of the tail, and ending with the -grin, which remained some time after the rest of it had gone. - - `Well! I've often seen a cat without a grin,' thought Alice; -`but a grin without a cat! It's the most curious thing I ever -say in my life!' - - She had not gone much farther before she came in sight of the -house of the March Hare: she thought it must be the right house, -because the chimneys were shaped like ears and the roof was -thatched with fur. It was so large a house, that she did not -like to go nearer till she had nibbled some more of the lefthand -bit of mushroom, and raised herself to about two feet high: even -then she walked up towards it rather timidly, saying to herself -`Suppose it should be raving mad after all! I almost wish I'd -gone to see the Hatter instead!' - - - - CHAPTER VII - - A Mad Tea-Party - - - There was a table set out under a tree in front of the house, -and the March Hare and the Hatter were having tea at it: a -Dormouse was sitting between them, fast asleep, and the other two -were using it as a cushion, resting their elbows on it, and the -talking over its head. `Very uncomfortable for the Dormouse,' -thought Alice; `only, as it's asleep, I suppose it doesn't mind.' - - The table was a large one, but the three were all crowded -together at one corner of it: `No room! No room!' they cried -out when they saw Alice coming. `There's PLENTY of room!' said -Alice indignantly, and she sat down in a large arm-chair at one -end of the table. - - `Have some wine,' the March Hare said in an encouraging tone. - - Alice looked all round the table, but there was nothing on it -but tea. `I don't see any wine,' she remarked. - - `There isn't any,' said the March Hare. - - `Then it wasn't very civil of you to offer it,' said Alice -angrily. - - `It wasn't very civil of you to sit down without being -invited,' said the March Hare. - - `I didn't know it was YOUR table,' said Alice; `it's laid for a -great many more than three.' - - `Your hair wants cutting,' said the Hatter. He had been -looking at Alice for some time with great curiosity, and this was -his first speech. - - `You should learn not to make personal remarks,' Alice said -with some severity; `it's very rude.' - - The Hatter opened his eyes very wide on hearing this; but all -he SAID was, `Why is a raven like a writing-desk?' - - `Come, we shall have some fun now!' thought Alice. `I'm glad -they've begun asking riddles.--I believe I can guess that,' she -added aloud. - - `Do you mean that you think you can find out the answer to it?' -said the March Hare. - - `Exactly so,' said Alice. - - `Then you should say what you mean,' the March Hare went on. - - `I do,' Alice hastily replied; `at least--at least I mean what -I say--that's the same thing, you know.' - - `Not the same thing a bit!' said the Hatter. `You might just -as well say that "I see what I eat" is the same thing as "I eat -what I see"!' - - `You might just as well say,' added the March Hare, `that "I -like what I get" is the same thing as "I get what I like"!' - - `You might just as well say,' added the Dormouse, who seemed to -be talking in his sleep, `that "I breathe when I sleep" is the -same thing as "I sleep when I breathe"!' - - `It IS the same thing with you,' said the Hatter, and here the -conversation dropped, and the party sat silent for a minute, -while Alice thought over all she could remember about ravens and -writing-desks, which wasn't much. - - The Hatter was the first to break the silence. `What day of -the month is it?' he said, turning to Alice: he had taken his -watch out of his pocket, and was looking at it uneasily, shaking -it every now and then, and holding it to his ear. - - Alice considered a little, and then said `The fourth.' - - `Two days wrong!' sighed the Hatter. `I told you butter -wouldn't suit the works!' he added looking angrily at the March -Hare. - - `It was the BEST butter,' the March Hare meekly replied. - - `Yes, but some crumbs must have got in as well,' the Hatter -grumbled: `you shouldn't have put it in with the bread-knife.' - - The March Hare took the watch and looked at it gloomily: then -he dipped it into his cup of tea, and looked at it again: but he -could think of nothing better to say than his first remark, `It -was the BEST butter, you know.' - - Alice had been looking over his shoulder with some curiosity. -`What a funny watch!' she remarked. `It tells the day of the -month, and doesn't tell what o'clock it is!' - - `Why should it?' muttered the Hatter. `Does YOUR watch tell -you what year it is?' - - `Of course not,' Alice replied very readily: `but that's -because it stays the same year for such a long time together.' - - `Which is just the case with MINE,' said the Hatter. - - Alice felt dreadfully puzzled. The Hatter's remark seemed to -have no sort of meaning in it, and yet it was certainly English. -`I don't quite understand you,' she said, as politely as she -could. - - `The Dormouse is asleep again,' said the Hatter, and he poured -a little hot tea upon its nose. - - The Dormouse shook its head impatiently, and said, without -opening its eyes, `Of course, of course; just what I was going to -remark myself.' - - `Have you guessed the riddle yet?' the Hatter said, turning to -Alice again. - - `No, I give it up,' Alice replied: `what's the answer?' - - `I haven't the slightest idea,' said the Hatter. - - `Nor I,' said the March Hare. - - Alice sighed wearily. `I think you might do something better -with the time,' she said, `than waste it in asking riddles that -have no answers.' - - `If you knew Time as well as I do,' said the Hatter, `you -wouldn't talk about wasting IT. It's HIM.' - - `I don't know what you mean,' said Alice. - - `Of course you don't!' the Hatter said, tossing his head -contemptuously. `I dare say you never even spoke to Time!' - - `Perhaps not,' Alice cautiously replied: `but I know I have to -beat time when I learn music.' - - `Ah! that accounts for it,' said the Hatter. `He won't stand -beating. Now, if you only kept on good terms with him, he'd do -almost anything you liked with the clock. For instance, suppose -it were nine o'clock in the morning, just time to begin lessons: -you'd only have to whisper a hint to Time, and round goes the -clock in a twinkling! Half-past one, time for dinner!' - - (`I only wish it was,' the March Hare said to itself in a -whisper.) - - `That would be grand, certainly,' said Alice thoughtfully: -`but then--I shouldn't be hungry for it, you know.' - - `Not at first, perhaps,' said the Hatter: `but you could keep -it to half-past one as long as you liked.' - - `Is that the way YOU manage?' Alice asked. - - The Hatter shook his head mournfully. `Not I!' he replied. -`We quarrelled last March--just before HE went mad, you know--' -(pointing with his tea spoon at the March Hare,) `--it was at the -great concert given by the Queen of Hearts, and I had to sing - - "Twinkle, twinkle, little bat! - How I wonder what you're at!" - -You know the song, perhaps?' - - `I've heard something like it,' said Alice. - - `It goes on, you know,' the Hatter continued, `in this way:-- - - "Up above the world you fly, - Like a tea-tray in the sky. - Twinkle, twinkle--"' - -Here the Dormouse shook itself, and began singing in its sleep -`Twinkle, twinkle, twinkle, twinkle--' and went on so long that -they had to pinch it to make it stop. - - `Well, I'd hardly finished the first verse,' said the Hatter, -`when the Queen jumped up and bawled out, "He's murdering the -time! Off with his head!"' - - `How dreadfully savage!' exclaimed Alice. - - `And ever since that,' the Hatter went on in a mournful tone, -`he won't do a thing I ask! It's always six o'clock now.' - - A bright idea came into Alice's head. `Is that the reason so -many tea-things are put out here?' she asked. - - `Yes, that's it,' said the Hatter with a sigh: `it's always -tea-time, and we've no time to wash the things between whiles.' - - `Then you keep moving round, I suppose?' said Alice. - - `Exactly so,' said the Hatter: `as the things get used up.' - - `But what happens when you come to the beginning again?' Alice -ventured to ask. - - `Suppose we change the subject,' the March Hare interrupted, -yawning. `I'm getting tired of this. I vote the young lady -tells us a story.' - - `I'm afraid I don't know one,' said Alice, rather alarmed at -the proposal. - - `Then the Dormouse shall!' they both cried. `Wake up, -Dormouse!' And they pinched it on both sides at once. - - The Dormouse slowly opened his eyes. `I wasn't asleep,' he -said in a hoarse, feeble voice: `I heard every word you fellows -were saying.' - - `Tell us a story!' said the March Hare. - - `Yes, please do!' pleaded Alice. - - `And be quick about it,' added the Hatter, `or you'll be asleep -again before it's done.' - - `Once upon a time there were three little sisters,' the -Dormouse began in a great hurry; `and their names were Elsie, -Lacie, and Tillie; and they lived at the bottom of a well--' - - `What did they live on?' said Alice, who always took a great -interest in questions of eating and drinking. - - `They lived on treacle,' said the Dormouse, after thinking a -minute or two. - - `They couldn't have done that, you know,' Alice gently -remarked; `they'd have been ill.' - - `So they were,' said the Dormouse; `VERY ill.' - - Alice tried to fancy to herself what such an extraordinary ways -of living would be like, but it puzzled her too much, so she went -on: `But why did they live at the bottom of a well?' - - `Take some more tea,' the March Hare said to Alice, very -earnestly. - - `I've had nothing yet,' Alice replied in an offended tone, `so -I can't take more.' - - `You mean you can't take LESS,' said the Hatter: `it's very -easy to take MORE than nothing.' - - `Nobody asked YOUR opinion,' said Alice. - - `Who's making personal remarks now?' the Hatter asked -triumphantly. - - Alice did not quite know what to say to this: so she helped -herself to some tea and bread-and-butter, and then turned to the -Dormouse, and repeated her question. `Why did they live at the -bottom of a well?' - - The Dormouse again took a minute or two to think about it, and -then said, `It was a treacle-well.' - - `There's no such thing!' Alice was beginning very angrily, but -the Hatter and the March Hare went `Sh! sh!' and the Dormouse -sulkily remarked, `If you can't be civil, you'd better finish the -story for yourself.' - - `No, please go on!' Alice said very humbly; `I won't interrupt -again. I dare say there may be ONE.' - - `One, indeed!' said the Dormouse indignantly. However, he -consented to go on. `And so these three little sisters--they -were learning to draw, you know--' - - `What did they draw?' said Alice, quite forgetting her promise. - - `Treacle,' said the Dormouse, without considering at all this -time. - - `I want a clean cup,' interrupted the Hatter: `let's all move -one place on.' - - He moved on as he spoke, and the Dormouse followed him: the -March Hare moved into the Dormouse's place, and Alice rather -unwillingly took the place of the March Hare. The Hatter was the -only one who got any advantage from the change: and Alice was a -good deal worse off than before, as the March Hare had just upset -the milk-jug into his plate. - - Alice did not wish to offend the Dormouse again, so she began -very cautiously: `But I don't understand. Where did they draw -the treacle from?' - - `You can draw water out of a water-well,' said the Hatter; `so -I should think you could draw treacle out of a treacle-well--eh, -stupid?' - - `But they were IN the well,' Alice said to the Dormouse, not -choosing to notice this last remark. - - `Of course they were', said the Dormouse; `--well in.' - - This answer so confused poor Alice, that she let the Dormouse -go on for some time without interrupting it. - - `They were learning to draw,' the Dormouse went on, yawning and -rubbing its eyes, for it was getting very sleepy; `and they drew -all manner of things--everything that begins with an M--' - - `Why with an M?' said Alice. - - `Why not?' said the March Hare. - - Alice was silent. - - The Dormouse had closed its eyes by this time, and was going -off into a doze; but, on being pinched by the Hatter, it woke up -again with a little shriek, and went on: `--that begins with an -M, such as mouse-traps, and the moon, and memory, and muchness-- -you know you say things are "much of a muchness"--did you ever -see such a thing as a drawing of a muchness?' - - `Really, now you ask me,' said Alice, very much confused, `I -don't think--' - - `Then you shouldn't talk,' said the Hatter. - - This piece of rudeness was more than Alice could bear: she got -up in great disgust, and walked off; the Dormouse fell asleep -instantly, and neither of the others took the least notice of her -going, though she looked back once or twice, half hoping that -they would call after her: the last time she saw them, they were -trying to put the Dormouse into the teapot. - - `At any rate I'll never go THERE again!' said Alice as she -picked her way through the wood. `It's the stupidest tea-party I -ever was at in all my life!' - - Just as she said this, she noticed that one of the trees had a -door leading right into it. `That's very curious!' she thought. -`But everything's curious today. I think I may as well go in at -once.' And in she went. - - Once more she found herself in the long hall, and close to the -little glass table. `Now, I'll manage better this time,' she -said to herself, and began by taking the little golden key, and -unlocking the door that led into the garden. Then she went to -work nibbling at the mushroom (she had kept a piece of it in her -pocked) till she was about a foot high: then she walked down the -little passage: and THEN--she found herself at last in the -beautiful garden, among the bright flower-beds and the cool -fountains. - - - - CHAPTER VIII - - The Queen's Croquet-Ground - - - A large rose-tree stood near the entrance of the garden: the -roses growing on it were white, but there were three gardeners at -it, busily painting them red. Alice thought this a very curious -thing, and she went nearer to watch them, and just as she came up -to them she heard one of them say, `Look out now, Five! Don't go -splashing paint over me like that!' - - `I couldn't help it,' said Five, in a sulky tone; `Seven jogged -my elbow.' - - On which Seven looked up and said, `That's right, Five! Always -lay the blame on others!' - - `YOU'D better not talk!' said Five. `I heard the Queen say only -yesterday you deserved to be beheaded!' - - `What for?' said the one who had spoken first. - - `That's none of YOUR business, Two!' said Seven. - - `Yes, it IS his business!' said Five, `and I'll tell him--it -was for bringing the cook tulip-roots instead of onions.' - - Seven flung down his brush, and had just begun `Well, of all -the unjust things--' when his eye chanced to fall upon Alice, as -she stood watching them, and he checked himself suddenly: the -others looked round also, and all of them bowed low. - - `Would you tell me,' said Alice, a little timidly, `why you are -painting those roses?' - - Five and Seven said nothing, but looked at Two. Two began in a -low voice, `Why the fact is, you see, Miss, this here ought to -have been a RED rose-tree, and we put a white one in by mistake; -and if the Queen was to find it out, we should all have our heads -cut off, you know. So you see, Miss, we're doing our best, afore -she comes, to--' At this moment Five, who had been anxiously -looking across the garden, called out `The Queen! The Queen!' -and the three gardeners instantly threw themselves flat upon -their faces. There was a sound of many footsteps, and Alice -looked round, eager to see the Queen. - - First came ten soldiers carrying clubs; these were all shaped -like the three gardeners, oblong and flat, with their hands and -feet at the corners: next the ten courtiers; these were -ornamented all over with diamonds, and walked two and two, as the -soldiers did. After these came the royal children; there were -ten of them, and the little dears came jumping merrily along hand -in hand, in couples: they were all ornamented with hearts. Next -came the guests, mostly Kings and Queens, and among them Alice -recognised the White Rabbit: it was talking in a hurried nervous -manner, smiling at everything that was said, and went by without -noticing her. Then followed the Knave of Hearts, carrying the -King's crown on a crimson velvet cushion; and, last of all this -grand procession, came THE KING AND QUEEN OF HEARTS. - - Alice was rather doubtful whether she ought not to lie down on -her face like the three gardeners, but she could not remember -every having heard of such a rule at processions; `and besides, -what would be the use of a procession,' thought she, `if people -had all to lie down upon their faces, so that they couldn't see -it?' So she stood still where she was, and waited. - - When the procession came opposite to Alice, they all stopped -and looked at her, and the Queen said severely `Who is this?' -She said it to the Knave of Hearts, who only bowed and smiled in -reply. - - `Idiot!' said the Queen, tossing her head impatiently; and, -turning to Alice, she went on, `What's your name, child?' - - `My name is Alice, so please your Majesty,' said Alice very -politely; but she added, to herself, `Why, they're only a pack of -cards, after all. I needn't be afraid of them!' - - `And who are THESE?' said the Queen, pointing to the three -gardeners who were lying round the rosetree; for, you see, as -they were lying on their faces, and the pattern on their backs -was the same as the rest of the pack, she could not tell whether -they were gardeners, or soldiers, or courtiers, or three of her -own children. - - `How should I know?' said Alice, surprised at her own courage. -`It's no business of MINE.' - - The Queen turned crimson with fury, and, after glaring at her -for a moment like a wild beast, screamed `Off with her head! -Off--' - - `Nonsense!' said Alice, very loudly and decidedly, and the -Queen was silent. - - The King laid his hand upon her arm, and timidly said -`Consider, my dear: she is only a child!' - - The Queen turned angrily away from him, and said to the Knave -`Turn them over!' - - The Knave did so, very carefully, with one foot. - - `Get up!' said the Queen, in a shrill, loud voice, and the -three gardeners instantly jumped up, and began bowing to the -King, the Queen, the royal children, and everybody else. - - `Leave off that!' screamed the Queen. `You make me giddy.' -And then, turning to the rose-tree, she went on, `What HAVE you -been doing here?' - - `May it please your Majesty,' said Two, in a very humble tone, -going down on one knee as he spoke, `we were trying--' - - `I see!' said the Queen, who had meanwhile been examining the -roses. `Off with their heads!' and the procession moved on, -three of the soldiers remaining behind to execute the unfortunate -gardeners, who ran to Alice for protection. - - `You shan't be beheaded!' said Alice, and she put them into a -large flower-pot that stood near. The three soldiers wandered -about for a minute or two, looking for them, and then quietly -marched off after the others. - - `Are their heads off?' shouted the Queen. - - `Their heads are gone, if it please your Majesty!' the soldiers -shouted in reply. - - `That's right!' shouted the Queen. `Can you play croquet?' - - The soldiers were silent, and looked at Alice, as the question -was evidently meant for her. - - `Yes!' shouted Alice. - - `Come on, then!' roared the Queen, and Alice joined the -procession, wondering very much what would happen next. - - `It's--it's a very fine day!' said a timid voice at her side. -She was walking by the White Rabbit, who was peeping anxiously -into her face. - - `Very,' said Alice: `--where's the Duchess?' - - `Hush! Hush!' said the Rabbit in a low, hurried tone. He -looked anxiously over his shoulder as he spoke, and then raised -himself upon tiptoe, put his mouth close to her ear, and -whispered `She's under sentence of execution.' - - `What for?' said Alice. - - `Did you say "What a pity!"?' the Rabbit asked. - - `No, I didn't,' said Alice: `I don't think it's at all a pity. -I said "What for?"' - - `She boxed the Queen's ears--' the Rabbit began. Alice gave a -little scream of laughter. `Oh, hush!' the Rabbit whispered in a -frightened tone. `The Queen will hear you! You see, she came -rather late, and the Queen said--' - - `Get to your places!' shouted the Queen in a voice of thunder, -and people began running about in all directions, tumbling up -against each other; however, they got settled down in a minute or -two, and the game began. Alice thought she had never seen such a -curious croquet-ground in her life; it was all ridges and -furrows; the balls were live hedgehogs, the mallets live -flamingoes, and the soldiers had to double themselves up and to -stand on their hands and feet, to make the arches. - - The chief difficulty Alice found at first was in managing her -flamingo: she succeeded in getting its body tucked away, -comfortably enough, under her arm, with its legs hanging down, -but generally, just as she had got its neck nicely straightened -out, and was going to give the hedgehog a blow with its head, it -WOULD twist itself round and look up in her face, with such a -puzzled expression that she could not help bursting out laughing: -and when she had got its head down, and was going to begin again, -it was very provoking to find that the hedgehog had unrolled -itself, and was in the act of crawling away: besides all this, -there was generally a ridge or furrow in the way wherever she -wanted to send the hedgehog to, and, as the doubled-up soldiers -were always getting up and walking off to other parts of the -ground, Alice soon came to the conclusion that it was a very -difficult game indeed. - - The players all played at once without waiting for turns, -quarrelling all the while, and fighting for the hedgehogs; and in -a very short time the Queen was in a furious passion, and went -stamping about, and shouting `Off with his head!' or `Off with -her head!' about once in a minute. - - Alice began to feel very uneasy: to be sure, she had not as -yet had any dispute with the Queen, but she knew that it might -happen any minute, `and then,' thought she, `what would become of -me? They're dreadfully fond of beheading people here; the great -wonder is, that there's any one left alive!' - - She was looking about for some way of escape, and wondering -whether she could get away without being seen, when she noticed a -curious appearance in the air: it puzzled her very much at -first, but, after watching it a minute or two, she made it out to -be a grin, and she said to herself `It's the Cheshire Cat: now I -shall have somebody to talk to.' - - `How are you getting on?' said the Cat, as soon as there was -mouth enough for it to speak with. - - Alice waited till the eyes appeared, and then nodded. `It's no -use speaking to it,' she thought, `till its ears have come, or at -least one of them.' In another minute the whole head appeared, -and then Alice put down her flamingo, and began an account of the -game, feeling very glad she had someone to listen to her. The -Cat seemed to think that there was enough of it now in sight, and -no more of it appeared. - - `I don't think they play at all fairly,' Alice began, in rather -a complaining tone, `and they all quarrel so dreadfully one can't -hear oneself speak--and they don't seem to have any rules in -particular; at least, if there are, nobody attends to them--and -you've no idea how confusing it is all the things being alive; -for instance, there's the arch I've got to go through next -walking about at the other end of the ground--and I should have -croqueted the Queen's hedgehog just now, only it ran away when it -saw mine coming!' - - `How do you like the Queen?' said the Cat in a low voice. - - `Not at all,' said Alice: `she's so extremely--' Just then -she noticed that the Queen was close behind her, listening: so -she went on, `--likely to win, that it's hardly worth while -finishing the game.' - - The Queen smiled and passed on. - - `Who ARE you talking to?' said the King, going up to Alice, and -looking at the Cat's head with great curiosity. - - `It's a friend of mine--a Cheshire Cat,' said Alice: `allow me -to introduce it.' - - `I don't like the look of it at all,' said the King: `however, -it may kiss my hand if it likes.' - - `I'd rather not,' the Cat remarked. - - `Don't be impertinent,' said the King, `and don't look at me -like that!' He got behind Alice as he spoke. - - `A cat may look at a king,' said Alice. `I've read that in -some book, but I don't remember where.' - - `Well, it must be removed,' said the King very decidedly, and -he called the Queen, who was passing at the moment, `My dear! I -wish you would have this cat removed!' - - The Queen had only one way of settling all difficulties, great -or small. `Off with his head!' she said, without even looking -round. - - `I'll fetch the executioner myself,' said the King eagerly, and -he hurried off. - - Alice thought she might as well go back, and see how the game -was going on, as she heard the Queen's voice in the distance, -screaming with passion. She had already heard her sentence three -of the players to be executed for having missed their turns, and -she did not like the look of things at all, as the game was in -such confusion that she never knew whether it was her turn or -not. So she went in search of her hedgehog. - - The hedgehog was engaged in a fight with another hedgehog, -which seemed to Alice an excellent opportunity for croqueting one -of them with the other: the only difficulty was, that her -flamingo was gone across to the other side of the garden, where -Alice could see it trying in a helpless sort of way to fly up -into a tree. - - By the time she had caught the flamingo and brought it back, -the fight was over, and both the hedgehogs were out of sight: -`but it doesn't matter much,' thought Alice, `as all the arches -are gone from this side of the ground.' So she tucked it away -under her arm, that it might not escape again, and went back for -a little more conversation with her friend. - - When she got back to the Cheshire Cat, she was surprised to -find quite a large crowd collected round it: there was a dispute -going on between the executioner, the King, and the Queen, who -were all talking at once, while all the rest were quite silent, -and looked very uncomfortable. - - The moment Alice appeared, she was appealed to by all three to -settle the question, and they repeated their arguments to her, -though, as they all spoke at once, she found it very hard indeed -to make out exactly what they said. - - The executioner's argument was, that you couldn't cut off a -head unless there was a body to cut it off from: that he had -never had to do such a thing before, and he wasn't going to begin -at HIS time of life. - - The King's argument was, that anything that had a head could be -beheaded, and that you weren't to talk nonsense. - - The Queen's argument was, that if something wasn't done about -it in less than no time she'd have everybody executed, all round. -(It was this last remark that had made the whole party look so -grave and anxious.) - - Alice could think of nothing else to say but `It belongs to the -Duchess: you'd better ask HER about it.' - - `She's in prison,' the Queen said to the executioner: `fetch -her here.' And the executioner went off like an arrow. - - The Cat's head began fading away the moment he was gone, and, -by the time he had come back with the Dutchess, it had entirely -disappeared; so the King and the executioner ran wildly up and -down looking for it, while the rest of the party went back to the game. - - - - CHAPTER IX - - The Mock Turtle's Story - - - `You can't think how glad I am to see you again, you dear old -thing!' said the Duchess, as she tucked her arm affectionately -into Alice's, and they walked off together. - - Alice was very glad to find her in such a pleasant temper, and -thought to herself that perhaps it was only the pepper that had -made her so savage when they met in the kitchen. - - `When I'M a Duchess,' she said to herself, (not in a very -hopeful tone though), `I won't have any pepper in my kitchen AT -ALL. Soup does very well without--Maybe it's always pepper that -makes people hot-tempered,' she went on, very much pleased at -having found out a new kind of rule, `and vinegar that makes them -sour--and camomile that makes them bitter--and--and barley-sugar -and such things that make children sweet-tempered. I only wish -people knew that: then they wouldn't be so stingy about it, you -know--' - - She had quite forgotten the Duchess by this time, and was a -little startled when she heard her voice close to her ear. -`You're thinking about something, my dear, and that makes you -forget to talk. I can't tell you just now what the moral of that -is, but I shall remember it in a bit.' - - `Perhaps it hasn't one,' Alice ventured to remark. - - `Tut, tut, child!' said the Duchess. `Everything's got a -moral, if only you can find it.' And she squeezed herself up -closer to Alice's side as she spoke. - - Alice did not much like keeping so close to her: first, -because the Duchess was VERY ugly; and secondly, because she was -exactly the right height to rest her chin upon Alice's shoulder, -and it was an uncomfortably sharp chin. However, she did not -like to be rude, so she bore it as well as she could. - - `The game's going on rather better now,' she said, by way of -keeping up the conversation a little. - - `'Tis so,' said the Duchess: `and the moral of that is--"Oh, -'tis love, 'tis love, that makes the world go round!"' - - `Somebody said,' Alice whispered, `that it's done by everybody -minding their own business!' - - `Ah, well! It means much the same thing,' said the Duchess, -digging her sharp little chin into Alice's shoulder as she added, -`and the moral of THAT is--"Take care of the sense, and the -sounds will take care of themselves."' - - `How fond she is of finding morals in things!' Alice thought to -herself. - - `I dare say you're wondering why I don't put my arm round your -waist,' the Duchess said after a pause: `the reason is, that I'm -doubtful about the temper of your flamingo. Shall I try the -experiment?' - - `HE might bite,' Alice cautiously replied, not feeling at all -anxious to have the experiment tried. - - `Very true,' said the Duchess: `flamingoes and mustard both -bite. And the moral of that is--"Birds of a feather flock -together."' - - `Only mustard isn't a bird,' Alice remarked. - - `Right, as usual,' said the Duchess: `what a clear way you -have of putting things!' - - `It's a mineral, I THINK,' said Alice. - - `Of course it is,' said the Duchess, who seemed ready to agree -to everything that Alice said; `there's a large mustard-mine near -here. And the moral of that is--"The more there is of mine, the -less there is of yours."' - - `Oh, I know!' exclaimed Alice, who had not attended to this -last remark, `it's a vegetable. It doesn't look like one, but it -is.' - - `I quite agree with you,' said the Duchess; `and the moral of -that is--"Be what you would seem to be"--or if you'd like it put -more simply--"Never imagine yourself not to be otherwise than -what it might appear to others that what you were or might have -been was not otherwise than what you had been would have appeared -to them to be otherwise."' - - `I think I should understand that better,' Alice said very -politely, `if I had it written down: but I can't quite follow it -as you say it.' - - `That's nothing to what I could say if I chose,' the Duchess -replied, in a pleased tone. - - `Pray don't trouble yourself to say it any longer than that,' -said Alice. - - `Oh, don't talk about trouble!' said the Duchess. `I make you -a present of everything I've said as yet.' - - `A cheap sort of present!' thought Alice. `I'm glad they don't -give birthday presents like that!' But she did not venture to -say it out loud. - - `Thinking again?' the Duchess asked, with another dig of her -sharp little chin. - - `I've a right to think,' said Alice sharply, for she was -beginning to feel a little worried. - - `Just about as much right,' said the Duchess, `as pigs have to -fly; and the m--' - - But here, to Alice's great surprise, the Duchess's voice died -away, even in the middle of her favourite word `moral,' and the -arm that was linked into hers began to tremble. Alice looked up, -and there stood the Queen in front of them, with her arms folded, -frowning like a thunderstorm. - - `A fine day, your Majesty!' the Duchess began in a low, weak -voice. - - `Now, I give you fair warning,' shouted the Queen, stamping on -the ground as she spoke; `either you or your head must be off, -and that in about half no time! Take your choice!' - - The Duchess took her choice, and was gone in a moment. - - `Let's go on with the game,' the Queen said to Alice; and Alice -was too much frightened to say a word, but slowly followed her -back to the croquet-ground. - - The other guests had taken advantage of the Queen's absence, -and were resting in the shade: however, the moment they saw her, -they hurried back to the game, the Queen merely remarking that a -moment's delay would cost them their lives. - - All the time they were playing the Queen never left off -quarrelling with the other players, and shouting `Off with his -head!' or `Off with her head!' Those whom she sentenced were -taken into custody by the soldiers, who of course had to leave -off being arches to do this, so that by the end of half an hour -or so there were no arches left, and all the players, except the -King, the Queen, and Alice, were in custody and under sentence of -execution. - - Then the Queen left off, quite out of breath, and said to -Alice, `Have you seen the Mock Turtle yet?' - - `No,' said Alice. `I don't even know what a Mock Turtle is.' - - `It's the thing Mock Turtle Soup is made from,' said the Queen. - - `I never saw one, or heard of one,' said Alice. - - `Come on, then,' said the Queen, `and he shall tell you his -history,' - - As they walked off together, Alice heard the King say in a low -voice, to the company generally, `You are all pardoned.' `Come, -THAT'S a good thing!' she said to herself, for she had felt quite -unhappy at the number of executions the Queen had ordered. - - They very soon came upon a Gryphon, lying fast asleep in the -sun. (IF you don't know what a Gryphon is, look at the picture.) -`Up, lazy thing!' said the Queen, `and take this young lady to -see the Mock Turtle, and to hear his history. I must go back and -see after some executions I have ordered'; and she walked off, -leaving Alice alone with the Gryphon. Alice did not quite like -the look of the creature, but on the whole she thought it would -be quite as safe to stay with it as to go after that savage -Queen: so she waited. - - The Gryphon sat up and rubbed its eyes: then it watched the -Queen till she was out of sight: then it chuckled. `What fun!' -said the Gryphon, half to itself, half to Alice. - - `What IS the fun?' said Alice. - - `Why, SHE,' said the Gryphon. `It's all her fancy, that: they -never executes nobody, you know. Come on!' - - `Everybody says "come on!" here,' thought Alice, as she went -slowly after it: `I never was so ordered about in all my life, -never!' - - They had not gone far before they saw the Mock Turtle in the -distance, sitting sad and lonely on a little ledge of rock, and, -as they came nearer, Alice could hear him sighing as if his heart -would break. She pitied him deeply. `What is his sorrow?' she -asked the Gryphon, and the Gryphon answered, very nearly in the -same words as before, `It's all his fancy, that: he hasn't got -no sorrow, you know. Come on!' - - So they went up to the Mock Turtle, who looked at them with -large eyes full of tears, but said nothing. - - `This here young lady,' said the Gryphon, `she wants for to -know your history, she do.' - - `I'll tell it her,' said the Mock Turtle in a deep, hollow -tone: `sit down, both of you, and don't speak a word till I've -finished.' - - So they sat down, and nobody spoke for some minutes. Alice -thought to herself, `I don't see how he can EVEN finish, if he -doesn't begin.' But she waited patiently. - - `Once,' said the Mock Turtle at last, with a deep sigh, `I was -a real Turtle.' - - These words were followed by a very long silence, broken only -by an occasional exclamation of `Hjckrrh!' from the Gryphon, and -the constant heavy sobbing of the Mock Turtle. Alice was very -nearly getting up and saying, `Thank you, sir, for your -interesting story,' but she could not help thinking there MUST be -more to come, so she sat still and said nothing. - - `When we were little,' the Mock Turtle went on at last, more -calmly, though still sobbing a little now and then, `we went to -school in the sea. The master was an old Turtle--we used to call -him Tortoise--' - - `Why did you call him Tortoise, if he wasn't one?' Alice asked. - - `We called him Tortoise because he taught us,' said the Mock -Turtle angrily: `really you are very dull!' - - `You ought to be ashamed of yourself for asking such a simple -question,' added the Gryphon; and then they both sat silent and -looked at poor Alice, who felt ready to sink into the earth. At -last the Gryphon said to the Mock Turtle, `Drive on, old fellow! -Don't be all day about it!' and he went on in these words: - - `Yes, we went to school in the sea, though you mayn't believe -it--' - - `I never said I didn't!' interrupted Alice. - - `You did,' said the Mock Turtle. - - `Hold your tongue!' added the Gryphon, before Alice could speak -again. The Mock Turtle went on. - - `We had the best of educations--in fact, we went to school -every day--' - - `I'VE been to a day-school, too,' said Alice; `you needn't be -so proud as all that.' - - `With extras?' asked the Mock Turtle a little anxiously. - - `Yes,' said Alice, `we learned French and music.' - - `And washing?' said the Mock Turtle. - - `Certainly not!' said Alice indignantly. - - `Ah! then yours wasn't a really good school,' said the Mock -Turtle in a tone of great relief. `Now at OURS they had at the -end of the bill, "French, music, AND WASHING--extra."' - - `You couldn't have wanted it much,' said Alice; `living at the -bottom of the sea.' - - `I couldn't afford to learn it.' said the Mock Turtle with a -sigh. `I only took the regular course.' - - `What was that?' inquired Alice. - - `Reeling and Writhing, of course, to begin with,' the Mock -Turtle replied; `and then the different branches of Arithmetic-- -Ambition, Distraction, Uglification, and Derision.' - - `I never heard of "Uglification,"' Alice ventured to say. `What -is it?' - - The Gryphon lifted up both its paws in surprise. `What! Never -heard of uglifying!' it exclaimed. `You know what to beautify -is, I suppose?' - - `Yes,' said Alice doubtfully: `it means--to--make--anything-- -prettier.' - - `Well, then,' the Gryphon went on, `if you don't know what to -uglify is, you ARE a simpleton.' - - Alice did not feel encouraged to ask any more questions about -it, so she turned to the Mock Turtle, and said `What else had you -to learn?' - - `Well, there was Mystery,' the Mock Turtle replied, counting -off the subjects on his flappers, `--Mystery, ancient and modern, -with Seaography: then Drawling--the Drawling-master was an old -conger-eel, that used to come once a week: HE taught us -Drawling, Stretching, and Fainting in Coils.' - - `What was THAT like?' said Alice. - - `Well, I can't show it you myself,' the Mock Turtle said: `I'm -too stiff. And the Gryphon never learnt it.' - - `Hadn't time,' said the Gryphon: `I went to the Classics -master, though. He was an old crab, HE was.' - - `I never went to him,' the Mock Turtle said with a sigh: `he -taught Laughing and Grief, they used to say.' - - `So he did, so he did,' said the Gryphon, sighing in his turn; -and both creatures hid their faces in their paws. - - `And how many hours a day did you do lessons?' said Alice, in a -hurry to change the subject. - - `Ten hours the first day,' said the Mock Turtle: `nine the -next, and so on.' - - `What a curious plan!' exclaimed Alice. - - `That's the reason they're called lessons,' the Gryphon -remarked: `because they lessen from day to day.' - - This was quite a new idea to Alice, and she thought it over a -little before she made her next remark. `Then the eleventh day -must have been a holiday?' - - `Of course it was,' said the Mock Turtle. - - `And how did you manage on the twelfth?' Alice went on eagerly. - - `That's enough about lessons,' the Gryphon interrupted in a -very decided tone: `tell her something about the games now.' - - - - CHAPTER X - - The Lobster Quadrille - - - The Mock Turtle sighed deeply, and drew the back of one flapper -across his eyes. He looked at Alice, and tried to speak, but for -a minute or two sobs choked his voice. `Same as if he had a bone -in his throat,' said the Gryphon: and it set to work shaking him -and punching him in the back. At last the Mock Turtle recovered -his voice, and, with tears running down his cheeks, he went on -again:-- - - `You may not have lived much under the sea--' (`I haven't,' -said Alice)--`and perhaps you were never even introduced to a lobster--' -(Alice began to say `I once tasted--' but checked herself hastily, -and said `No, never') `--so you can have no idea what a delightful -thing a Lobster Quadrille is!' - - `No, indeed,' said Alice. `What sort of a dance is it?' - - `Why,' said the Gryphon, `you first form into a line along the -sea-shore--' - - `Two lines!' cried the Mock Turtle. `Seals, turtles, salmon, -and so on; then, when you've cleared all the jelly-fish out of -the way--' - - `THAT generally takes some time,' interrupted the Gryphon. - - `--you advance twice--' - - `Each with a lobster as a partner!' cried the Gryphon. - - `Of course,' the Mock Turtle said: `advance twice, set to -partners--' - - `--change lobsters, and retire in same order,' continued the -Gryphon. - - `Then, you know,' the Mock Turtle went on, `you throw the--' - - `The lobsters!' shouted the Gryphon, with a bound into the air. - - `--as far out to sea as you can--' - - `Swim after them!' screamed the Gryphon. - - `Turn a somersault in the sea!' cried the Mock Turtle, -capering wildly about. - - `Back to land again, and that's all the first figure,' said the -Mock Turtle, suddenly dropping his voice; and the two creatures, -who had been jumping about like mad things all this time, sat -down again very sadly and quietly, and looked at Alice. - - `It must be a very pretty dance,' said Alice timidly. - - `Would you like to see a little of it?' said the Mock Turtle. - - `Very much indeed,' said Alice. - - `Come, let's try the first figure!' said the Mock Turtle to the -Gryphon. `We can do without lobsters, you know. Which shall -sing?' - - `Oh, YOU sing,' said the Gryphon. `I've forgotten the words.' - - So they began solemnly dancing round and round Alice, every now -and then treading on her toes when they passed too close, and -waving their forepaws to mark the time, while the Mock Turtle -sang this, very slowly and sadly:-- - - -`"Will you walk a little faster?" said a whiting to a snail. -"There's a porpoise close behind us, and he's treading on my - tail. -See how eagerly the lobsters and the turtles all advance! -They are waiting on the shingle--will you come and join the -dance? - -Will you, won't you, will you, won't you, will you join the -dance? -Will you, won't you, will you, won't you, won't you join the -dance? - - -"You can really have no notion how delightful it will be -When they take us up and throw us, with the lobsters, out to - sea!" -But the snail replied "Too far, too far!" and gave a look - askance-- -Said he thanked the whiting kindly, but he would not join the - dance. - Would not, could not, would not, could not, would not join - the dance. - Would not, could not, would not, could not, could not join - the dance. - -`"What matters it how far we go?" his scaly friend replied. -"There is another shore, you know, upon the other side. -The further off from England the nearer is to France-- -Then turn not pale, beloved snail, but come and join the dance. - - Will you, won't you, will you, won't you, will you join the - dance? - Will you, won't you, will you, won't you, won't you join the - dance?"' - - - - `Thank you, it's a very interesting dance to watch,' said -Alice, feeling very glad that it was over at last: `and I do so -like that curious song about the whiting!' - - `Oh, as to the whiting,' said the Mock Turtle, `they--you've -seen them, of course?' - - `Yes,' said Alice, `I've often seen them at dinn--' she -checked herself hastily. - - `I don't know where Dinn may be,' said the Mock Turtle, `but -if you've seen them so often, of course you know what they're -like.' - - `I believe so,' Alice replied thoughtfully. `They have their -tails in their mouths--and they're all over crumbs.' - - `You're wrong about the crumbs,' said the Mock Turtle: -`crumbs would all wash off in the sea. But they HAVE their tails -in their mouths; and the reason is--' here the Mock Turtle -yawned and shut his eyes.--`Tell her about the reason and all -that,' he said to the Gryphon. - - `The reason is,' said the Gryphon, `that they WOULD go with -the lobsters to the dance. So they got thrown out to sea. So -they had to fall a long way. So they got their tails fast in -their mouths. So they couldn't get them out again. That's all.' - - `Thank you,' said Alice, `it's very interesting. I never knew -so much about a whiting before.' - - `I can tell you more than that, if you like,' said the -Gryphon. `Do you know why it's called a whiting?' - - `I never thought about it,' said Alice. `Why?' - - `IT DOES THE BOOTS AND SHOES.' the Gryphon replied very -solemnly. - - Alice was thoroughly puzzled. `Does the boots and shoes!' she -repeated in a wondering tone. - - `Why, what are YOUR shoes done with?' said the Gryphon. `I -mean, what makes them so shiny?' - - Alice looked down at them, and considered a little before she -gave her answer. `They're done with blacking, I believe.' - - `Boots and shoes under the sea,' the Gryphon went on in a deep -voice, `are done with a whiting. Now you know.' - - `And what are they made of?' Alice asked in a tone of great -curiosity. - - `Soles and eels, of course,' the Gryphon replied rather -impatiently: `any shrimp could have told you that.' - - `If I'd been the whiting,' said Alice, whose thoughts were -still running on the song, `I'd have said to the porpoise, "Keep -back, please: we don't want YOU with us!"' - - `They were obliged to have him with them,' the Mock Turtle -said: `no wise fish would go anywhere without a porpoise.' - - `Wouldn't it really?' said Alice in a tone of great surprise. - - `Of course not,' said the Mock Turtle: `why, if a fish came -to ME, and told me he was going a journey, I should say "With -what porpoise?"' - - `Don't you mean "purpose"?' said Alice. - - `I mean what I say,' the Mock Turtle replied in an offended -tone. And the Gryphon added `Come, let's hear some of YOUR -adventures.' - - `I could tell you my adventures--beginning from this morning,' -said Alice a little timidly: `but it's no use going back to -yesterday, because I was a different person then.' - - `Explain all that,' said the Mock Turtle. - - `No, no! The adventures first,' said the Gryphon in an -impatient tone: `explanations take such a dreadful time.' - - So Alice began telling them her adventures from the time when -she first saw the White Rabbit. She was a little nervous about -it just at first, the two creatures got so close to her, one on -each side, and opened their eyes and mouths so VERY wide, but she -gained courage as she went on. Her listeners were perfectly -quiet till she got to the part about her repeating `YOU ARE OLD, -FATHER WILLIAM,' to the Caterpillar, and the words all coming -different, and then the Mock Turtle drew a long breath, and said -`That's very curious.' - - `It's all about as curious as it can be,' said the Gryphon. - - `It all came different!' the Mock Turtle repeated -thoughtfully. `I should like to hear her try and repeat -something now. Tell her to begin.' He looked at the Gryphon as -if he thought it had some kind of authority over Alice. - - `Stand up and repeat "'TIS THE VOICE OF THE SLUGGARD,"' said -the Gryphon. - - `How the creatures order one about, and make one repeat -lessons!' thought Alice; `I might as well be at school at once.' -However, she got up, and began to repeat it, but her head was so -full of the Lobster Quadrille, that she hardly knew what she was -saying, and the words came very queer indeed:-- - - `'Tis the voice of the Lobster; I heard him declare, - "You have baked me too brown, I must sugar my hair." - As a duck with its eyelids, so he with his nose - Trims his belt and his buttons, and turns out his toes.' - - [later editions continued as follows - When the sands are all dry, he is gay as a lark, - And will talk in contemptuous tones of the Shark, - But, when the tide rises and sharks are around, - His voice has a timid and tremulous sound.] - - `That's different from what I used to say when I was a child,' -said the Gryphon. - - `Well, I never heard it before,' said the Mock Turtle; `but it -sounds uncommon nonsense.' - - Alice said nothing; she had sat down with her face in her -hands, wondering if anything would EVER happen in a natural way -again. - - `I should like to have it explained,' said the Mock Turtle. - - `She can't explain it,' said the Gryphon hastily. `Go on with -the next verse.' - - `But about his toes?' the Mock Turtle persisted. `How COULD -he turn them out with his nose, you know?' - - `It's the first position in dancing.' Alice said; but was -dreadfully puzzled by the whole thing, and longed to change the -subject. - - `Go on with the next verse,' the Gryphon repeated impatiently: -`it begins "I passed by his garden."' - - Alice did not dare to disobey, though she felt sure it would -all come wrong, and she went on in a trembling voice:-- - - `I passed by his garden, and marked, with one eye, - How the Owl and the Panther were sharing a pie--' - - [later editions continued as follows - The Panther took pie-crust, and gravy, and meat, - While the Owl had the dish as its share of the treat. - When the pie was all finished, the Owl, as a boon, - Was kindly permitted to pocket the spoon: - While the Panther received knife and fork with a growl, - And concluded the banquet--] - - `What IS the use of repeating all that stuff,' the Mock Turtle -interrupted, `if you don't explain it as you go on? It's by far -the most confusing thing I ever heard!' - - `Yes, I think you'd better leave off,' said the Gryphon: and -Alice was only too glad to do so. - - `Shall we try another figure of the Lobster Quadrille?' the -Gryphon went on. `Or would you like the Mock Turtle to sing you -a song?' - - `Oh, a song, please, if the Mock Turtle would be so kind,' -Alice replied, so eagerly that the Gryphon said, in a rather -offended tone, `Hm! No accounting for tastes! Sing her "Turtle -Soup," will you, old fellow?' - - The Mock Turtle sighed deeply, and began, in a voice sometimes -choked with sobs, to sing this:-- - - - `Beautiful Soup, so rich and green, - Waiting in a hot tureen! - Who for such dainties would not stoop? - Soup of the evening, beautiful Soup! - Soup of the evening, beautiful Soup! - Beau--ootiful Soo--oop! - Beau--ootiful Soo--oop! - Soo--oop of the e--e--evening, - Beautiful, beautiful Soup! - - `Beautiful Soup! Who cares for fish, - Game, or any other dish? - Who would not give all else for two p - ennyworth only of beautiful Soup? - Pennyworth only of beautiful Soup? - Beau--ootiful Soo--oop! - Beau--ootiful Soo--oop! - Soo--oop of the e--e--evening, - Beautiful, beauti--FUL SOUP!' - - `Chorus again!' cried the Gryphon, and the Mock Turtle had -just begun to repeat it, when a cry of `The trial's beginning!' -was heard in the distance. - - `Come on!' cried the Gryphon, and, taking Alice by the hand, -it hurried off, without waiting for the end of the song. - - `What trial is it?' Alice panted as she ran; but the Gryphon -only answered `Come on!' and ran the faster, while more and more -faintly came, carried on the breeze that followed them, the -melancholy words:-- - - `Soo--oop of the e--e--evening, - Beautiful, beautiful Soup!' - - - - CHAPTER XI - - Who Stole the Tarts? - - - The King and Queen of Hearts were seated on their throne when -they arrived, with a great crowd assembled about them--all sorts -of little birds and beasts, as well as the whole pack of cards: -the Knave was standing before them, in chains, with a soldier on -each side to guard him; and near the King was the White Rabbit, -with a trumpet in one hand, and a scroll of parchment in the -other. In the very middle of the court was a table, with a large -dish of tarts upon it: they looked so good, that it made Alice -quite hungry to look at them--`I wish they'd get the trial done,' -she thought, `and hand round the refreshments!' But there seemed -to be no chance of this, so she began looking at everything about -her, to pass away the time. - - Alice had never been in a court of justice before, but she had -read about them in books, and she was quite pleased to find that -she knew the name of nearly everything there. `That's the -judge,' she said to herself, `because of his great wig.' - - The judge, by the way, was the King; and as he wore his crown -over the wig, (look at the frontispiece if you want to see how he -did it,) he did not look at all comfortable, and it was certainly -not becoming. - - `And that's the jury-box,' thought Alice, `and those twelve -creatures,' (she was obliged to say `creatures,' you see, because -some of them were animals, and some were birds,) `I suppose they -are the jurors.' She said this last word two or three times over -to herself, being rather proud of it: for she thought, and -rightly too, that very few little girls of her age knew the -meaning of it at all. However, `jury-men' would have done just -as well. - - The twelve jurors were all writing very busily on slates. -`What are they doing?' Alice whispered to the Gryphon. `They -can't have anything to put down yet, before the trial's begun.' - - `They're putting down their names,' the Gryphon whispered in -reply, `for fear they should forget them before the end of the -trial.' - - `Stupid things!' Alice began in a loud, indignant voice, but -she stopped hastily, for the White Rabbit cried out, `Silence in -the court!' and the King put on his spectacles and looked -anxiously round, to make out who was talking. - - Alice could see, as well as if she were looking over their -shoulders, that all the jurors were writing down `stupid things!' -on their slates, and she could even make out that one of them -didn't know how to spell `stupid,' and that he had to ask his -neighbour to tell him. `A nice muddle their slates'll be in -before the trial's over!' thought Alice. - - One of the jurors had a pencil that squeaked. This of course, -Alice could not stand, and she went round the court and got -behind him, and very soon found an opportunity of taking it -away. She did it so quickly that the poor little juror (it was -Bill, the Lizard) could not make out at all what had become of -it; so, after hunting all about for it, he was obliged to write -with one finger for the rest of the day; and this was of very -little use, as it left no mark on the slate. - - `Herald, read the accusation!' said the King. - - On this the White Rabbit blew three blasts on the trumpet, and -then unrolled the parchment scroll, and read as follows:-- - - `The Queen of Hearts, she made some tarts, - All on a summer day: - The Knave of Hearts, he stole those tarts, - And took them quite away!' - - `Consider your verdict,' the King said to the jury. - - `Not yet, not yet!' the Rabbit hastily interrupted. `There's -a great deal to come before that!' - - `Call the first witness,' said the King; and the White Rabbit -blew three blasts on the trumpet, and called out, `First -witness!' - - The first witness was the Hatter. He came in with a teacup in -one hand and a piece of bread-and-butter in the other. `I beg -pardon, your Majesty,' he began, `for bringing these in: but I -hadn't quite finished my tea when I was sent for.' - - `You ought to have finished,' said the King. `When did you -begin?' - - The Hatter looked at the March Hare, who had followed him into -the court, arm-in-arm with the Dormouse. `Fourteenth of March, I -think it was,' he said. - - `Fifteenth,' said the March Hare. - - `Sixteenth,' added the Dormouse. - - `Write that down,' the King said to the jury, and the jury -eagerly wrote down all three dates on their slates, and then -added them up, and reduced the answer to shillings and pence. - - `Take off your hat,' the King said to the Hatter. - - `It isn't mine,' said the Hatter. - - `Stolen!' the King exclaimed, turning to the jury, who -instantly made a memorandum of the fact. - - `I keep them to sell,' the Hatter added as an explanation; -`I've none of my own. I'm a hatter.' - - Here the Queen put on her spectacles, and began staring at the -Hatter, who turned pale and fidgeted. - - `Give your evidence,' said the King; `and don't be nervous, or -I'll have you executed on the spot.' - - This did not seem to encourage the witness at all: he kept -shifting from one foot to the other, looking uneasily at the -Queen, and in his confusion he bit a large piece out of his -teacup instead of the bread-and-butter. - - Just at this moment Alice felt a very curious sensation, which -puzzled her a good deal until she made out what it was: she was -beginning to grow larger again, and she thought at first she -would get up and leave the court; but on second thoughts she -decided to remain where she was as long as there was room for -her. - - `I wish you wouldn't squeeze so.' said the Dormouse, who was -sitting next to her. `I can hardly breathe.' - - `I can't help it,' said Alice very meekly: `I'm growing.' - - `You've no right to grow here,' said the Dormouse. - - `Don't talk nonsense,' said Alice more boldly: `you know -you're growing too.' - - `Yes, but I grow at a reasonable pace,' said the Dormouse: -`not in that ridiculous fashion.' And he got up very sulkily -and crossed over to the other side of the court. - - All this time the Queen had never left off staring at the -Hatter, and, just as the Dormouse crossed the court, she said to -one of the officers of the court, `Bring me the list of the -singers in the last concert!' on which the wretched Hatter -trembled so, that he shook both his shoes off. - - `Give your evidence,' the King repeated angrily, `or I'll have -you executed, whether you're nervous or not.' - - `I'm a poor man, your Majesty,' the Hatter began, in a -trembling voice, `--and I hadn't begun my tea--not above a week -or so--and what with the bread-and-butter getting so thin--and -the twinkling of the tea--' - - `The twinkling of the what?' said the King. - - `It began with the tea,' the Hatter replied. - - `Of course twinkling begins with a T!' said the King sharply. -`Do you take me for a dunce? Go on!' - - `I'm a poor man,' the Hatter went on, `and most things -twinkled after that--only the March Hare said--' - - `I didn't!' the March Hare interrupted in a great hurry. - - `You did!' said the Hatter. - - `I deny it!' said the March Hare. - - `He denies it,' said the King: `leave out that part.' - - `Well, at any rate, the Dormouse said--' the Hatter went on, -looking anxiously round to see if he would deny it too: but the -Dormouse denied nothing, being fast asleep. - - `After that,' continued the Hatter, `I cut some more bread- -and-butter--' - - `But what did the Dormouse say?' one of the jury asked. - - `That I can't remember,' said the Hatter. - - `You MUST remember,' remarked the King, `or I'll have you -executed.' - - The miserable Hatter dropped his teacup and bread-and-butter, -and went down on one knee. `I'm a poor man, your Majesty,' he -began. - - `You're a very poor speaker,' said the King. - - Here one of the guinea-pigs cheered, and was immediately -suppressed by the officers of the court. (As that is rather a -hard word, I will just explain to you how it was done. They had -a large canvas bag, which tied up at the mouth with strings: -into this they slipped the guinea-pig, head first, and then sat -upon it.) - - `I'm glad I've seen that done,' thought Alice. `I've so often -read in the newspapers, at the end of trials, "There was some -attempts at applause, which was immediately suppressed by the -officers of the court," and I never understood what it meant -till now.' - - `If that's all you know about it, you may stand down,' -continued the King. - - `I can't go no lower,' said the Hatter: `I'm on the floor, as -it is.' - - `Then you may SIT down,' the King replied. - - Here the other guinea-pig cheered, and was suppressed. - - `Come, that finished the guinea-pigs!' thought Alice. `Now we -shall get on better.' - - `I'd rather finish my tea,' said the Hatter, with an anxious -look at the Queen, who was reading the list of singers. - - `You may go,' said the King, and the Hatter hurriedly left the -court, without even waiting to put his shoes on. - - `--and just take his head off outside,' the Queen added to one -of the officers: but the Hatter was out of sight before the -officer could get to the door. - - `Call the next witness!' said the King. - - The next witness was the Duchess's cook. She carried the -pepper-box in her hand, and Alice guessed who it was, even before -she got into the court, by the way the people near the door began -sneezing all at once. - - `Give your evidence,' said the King. - - `Shan't,' said the cook. - - The King looked anxiously at the White Rabbit, who said in a -low voice, `Your Majesty must cross-examine THIS witness.' - - `Well, if I must, I must,' the King said, with a melancholy -air, and, after folding his arms and frowning at the cook till -his eyes were nearly out of sight, he said in a deep voice, `What -are tarts made of?' - - `Pepper, mostly,' said the cook. - - `Treacle,' said a sleepy voice behind her. - - `Collar that Dormouse,' the Queen shrieked out. `Behead that -Dormouse! Turn that Dormouse out of court! Suppress him! Pinch -him! Off with his whiskers!' - - For some minutes the whole court was in confusion, getting the -Dormouse turned out, and, by the time they had settled down -again, the cook had disappeared. - - `Never mind!' said the King, with an air of great relief. -`Call the next witness.' And he added in an undertone to the -Queen, `Really, my dear, YOU must cross-examine the next witness. -It quite makes my forehead ache!' - - Alice watched the White Rabbit as he fumbled over the list, -feeling very curious to see what the next witness would be like, -`--for they haven't got much evidence YET,' she said to herself. -Imagine her surprise, when the White Rabbit read out, at the top -of his shrill little voice, the name `Alice!' - - - - CHAPTER XII - - Alice's Evidence - - - `Here!' cried Alice, quite forgetting in the flurry of the -moment how large she had grown in the last few minutes, and she -jumped up in such a hurry that she tipped over the jury-box with -the edge of her skirt, upsetting all the jurymen on to the heads -of the crowd below, and there they lay sprawling about, reminding -her very much of a globe of goldfish she had accidentally upset -the week before. - - `Oh, I BEG your pardon!' she exclaimed in a tone of great -dismay, and began picking them up again as quickly as she could, -for the accident of the goldfish kept running in her head, and -she had a vague sort of idea that they must be collected at once -and put back into the jury-box, or they would die. - - `The trial cannot proceed,' said the King in a very grave -voice, `until all the jurymen are back in their proper places-- -ALL,' he repeated with great emphasis, looking hard at Alice as -he said do. - - Alice looked at the jury-box, and saw that, in her haste, she -had put the Lizard in head downwards, and the poor little thing -was waving its tail about in a melancholy way, being quite unable -to move. She soon got it out again, and put it right; `not that -it signifies much,' she said to herself; `I should think it -would be QUITE as much use in the trial one way up as the other.' - - As soon as the jury had a little recovered from the shock of -being upset, and their slates and pencils had been found and -handed back to them, they set to work very diligently to write -out a history of the accident, all except the Lizard, who seemed -too much overcome to do anything but sit with its mouth open, -gazing up into the roof of the court. - - `What do you know about this business?' the King said to -Alice. - - `Nothing,' said Alice. - - `Nothing WHATEVER?' persisted the King. - - `Nothing whatever,' said Alice. - - `That's very important,' the King said, turning to the jury. -They were just beginning to write this down on their slates, when -the White Rabbit interrupted: `UNimportant, your Majesty means, -of course,' he said in a very respectful tone, but frowning and -making faces at him as he spoke. - - `UNimportant, of course, I meant,' the King hastily said, and -went on to himself in an undertone, `important--unimportant-- -unimportant--important--' as if he were trying which word -sounded best. - - Some of the jury wrote it down `important,' and some -`unimportant.' Alice could see this, as she was near enough to -look over their slates; `but it doesn't matter a bit,' she -thought to herself. - - At this moment the King, who had been for some time busily -writing in his note-book, cackled out `Silence!' and read out -from his book, `Rule Forty-two. ALL PERSONS MORE THAN A MILE -HIGH TO LEAVE THE COURT.' - - Everybody looked at Alice. - - `I'M not a mile high,' said Alice. - - `You are,' said the King. - - `Nearly two miles high,' added the Queen. - - `Well, I shan't go, at any rate,' said Alice: `besides, -that's not a regular rule: you invented it just now.' - - `It's the oldest rule in the book,' said the King. - - `Then it ought to be Number One,' said Alice. - - The King turned pale, and shut his note-book hastily. -`Consider your verdict,' he said to the jury, in a low, trembling -voice. - - `There's more evidence to come yet, please your Majesty,' said -the White Rabbit, jumping up in a great hurry; `this paper has -just been picked up.' - - `What's in it?' said the Queen. - - `I haven't opened it yet,' said the White Rabbit, `but it seems -to be a letter, written by the prisoner to--to somebody.' - - `It must have been that,' said the King, `unless it was -written to nobody, which isn't usual, you know.' - - `Who is it directed to?' said one of the jurymen. - - `It isn't directed at all,' said the White Rabbit; `in fact, -there's nothing written on the OUTSIDE.' He unfolded the paper -as he spoke, and added `It isn't a letter, after all: it's a set -of verses.' - - `Are they in the prisoner's handwriting?' asked another of -they jurymen. - - `No, they're not,' said the White Rabbit, `and that's the -queerest thing about it.' (The jury all looked puzzled.) - - `He must have imitated somebody else's hand,' said the King. -(The jury all brightened up again.) - - `Please your Majesty,' said the Knave, `I didn't write it, and -they can't prove I did: there's no name signed at the end.' - - `If you didn't sign it,' said the King, `that only makes the -matter worse. You MUST have meant some mischief, or else you'd -have signed your name like an honest man.' - - There was a general clapping of hands at this: it was the -first really clever thing the King had said that day. - - `That PROVES his guilt,' said the Queen. - - `It proves nothing of the sort!' said Alice. `Why, you don't -even know what they're about!' - - `Read them,' said the King. - - The White Rabbit put on his spectacles. `Where shall I begin, -please your Majesty?' he asked. - - `Begin at the beginning,' the King said gravely, `and go on -till you come to the end: then stop.' - - These were the verses the White Rabbit read:-- - - `They told me you had been to her, - And mentioned me to him: - She gave me a good character, - But said I could not swim. - - He sent them word I had not gone - (We know it to be true): - If she should push the matter on, - What would become of you? - - I gave her one, they gave him two, - You gave us three or more; - They all returned from him to you, - Though they were mine before. - - If I or she should chance to be - Involved in this affair, - He trusts to you to set them free, - Exactly as we were. - - My notion was that you had been - (Before she had this fit) - An obstacle that came between - Him, and ourselves, and it. - - Don't let him know she liked them best, - For this must ever be - A secret, kept from all the rest, - Between yourself and me.' - - `That's the most important piece of evidence we've heard yet,' -said the King, rubbing his hands; `so now let the jury--' - - `If any one of them can explain it,' said Alice, (she had -grown so large in the last few minutes that she wasn't a bit -afraid of interrupting him,) `I'll give him sixpence. _I_ don't -believe there's an atom of meaning in it.' - - The jury all wrote down on their slates, `SHE doesn't believe -there's an atom of meaning in it,' but none of them attempted to -explain the paper. - - `If there's no meaning in it,' said the King, `that saves a -world of trouble, you know, as we needn't try to find any. And -yet I don't know,' he went on, spreading out the verses on his -knee, and looking at them with one eye; `I seem to see some -meaning in them, after all. "--SAID I COULD NOT SWIM--" you -can't swim, can you?' he added, turning to the Knave. - - The Knave shook his head sadly. `Do I look like it?' he said. -(Which he certainly did NOT, being made entirely of cardboard.) - - `All right, so far,' said the King, and he went on muttering -over the verses to himself: `"WE KNOW IT TO BE TRUE--" that's -the jury, of course-- "I GAVE HER ONE, THEY GAVE HIM TWO--" why, -that must be what he did with the tarts, you know--' - - `But, it goes on "THEY ALL RETURNED FROM HIM TO YOU,"' said -Alice. - - `Why, there they are!' said the King triumphantly, pointing to -the tarts on the table. `Nothing can be clearer than THAT. -Then again--"BEFORE SHE HAD THIS FIT--" you never had fits, my -dear, I think?' he said to the Queen. - - `Never!' said the Queen furiously, throwing an inkstand at the -Lizard as she spoke. (The unfortunate little Bill had left off -writing on his slate with one finger, as he found it made no -mark; but he now hastily began again, using the ink, that was -trickling down his face, as long as it lasted.) - - `Then the words don't FIT you,' said the King, looking round -the court with a smile. There was a dead silence. - - `It's a pun!' the King added in an offended tone, and -everybody laughed, `Let the jury consider their verdict,' the -King said, for about the twentieth time that day. - - `No, no!' said the Queen. `Sentence first--verdict afterwards.' - - `Stuff and nonsense!' said Alice loudly. `The idea of having -the sentence first!' - - `Hold your tongue!' said the Queen, turning purple. - - `I won't!' said Alice. - - `Off with her head!' the Queen shouted at the top of her voice. -Nobody moved. - - `Who cares for you?' said Alice, (she had grown to her full -size by this time.) `You're nothing but a pack of cards!' - - At this the whole pack rose up into the air, and came flying -down upon her: she gave a little scream, half of fright and half -of anger, and tried to beat them off, and found herself lying on -the bank, with her head in the lap of her sister, who was gently -brushing away some dead leaves that had fluttered down from the -trees upon her face. - - `Wake up, Alice dear!' said her sister; `Why, what a long -sleep you've had!' - - `Oh, I've had such a curious dream!' said Alice, and she told -her sister, as well as she could remember them, all these strange -Adventures of hers that you have just been reading about; and -when she had finished, her sister kissed her, and said, `It WAS a -curious dream, dear, certainly: but now run in to your tea; it's -getting late.' So Alice got up and ran off, thinking while she -ran, as well she might, what a wonderful dream it had been. - - But her sister sat still just as she left her, leaning her -head on her hand, watching the setting sun, and thinking of -little Alice and all her wonderful Adventures, till she too began -dreaming after a fashion, and this was her dream:-- - - First, she dreamed of little Alice herself, and once again the -tiny hands were clasped upon her knee, and the bright eager eyes -were looking up into hers--she could hear the very tones of her -voice, and see that queer little toss of her head to keep back -the wandering hair that WOULD always get into her eyes--and -still as she listened, or seemed to listen, the whole place -around her became alive the strange creatures of her little -sister's dream. - - The long grass rustled at her feet as the White Rabbit hurried -by--the frightened Mouse splashed his way through the -neighbouring pool--she could hear the rattle of the teacups as -the March Hare and his friends shared their never-ending meal, -and the shrill voice of the Queen ordering off her unfortunate -guests to execution--once more the pig-baby was sneezing on the -Duchess's knee, while plates and dishes crashed around it--once -more the shriek of the Gryphon, the squeaking of the Lizard's -slate-pencil, and the choking of the suppressed guinea-pigs, -filled the air, mixed up with the distant sobs of the miserable -Mock Turtle. - - So she sat on, with closed eyes, and half believed herself in -Wonderland, though she knew she had but to open them again, and -all would change to dull reality--the grass would be only -rustling in the wind, and the pool rippling to the waving of the -reeds--the rattling teacups would change to tinkling sheep- -bells, and the Queen's shrill cries to the voice of the shepherd -boy--and the sneeze of the baby, the shriek of the Gryphon, and -all thy other queer noises, would change (she knew) to the -confused clamour of the busy farm-yard--while the lowing of the -cattle in the distance would take the place of the Mock Turtle's -heavy sobs. - - Lastly, she pictured to herself how this same little sister of -hers would, in the after-time, be herself a grown woman; and how -she would keep, through all her riper years, the simple and -loving heart of her childhood: and how she would gather about -her other little children, and make THEIR eyes bright and eager -with many a strange tale, perhaps even with the dream of -Wonderland of long ago: and how she would feel with all their -simple sorrows, and find a pleasure in all their simple joys, -remembering her own child-life, and the happy summer days. - - THE END - \ No newline at end of file diff --git a/snappy-1.1.0/testdata/asyoulik.txt b/snappy-1.1.0/testdata/asyoulik.txt deleted file mode 100644 index 88dc7b6..0000000 --- a/snappy-1.1.0/testdata/asyoulik.txt +++ /dev/null @@ -1,4122 +0,0 @@ - AS YOU LIKE IT - - - DRAMATIS PERSONAE - - -DUKE SENIOR living in banishment. - -DUKE FREDERICK his brother, an usurper of his dominions. - - -AMIENS | - | lords attending on the banished duke. -JAQUES | - - -LE BEAU a courtier attending upon Frederick. - -CHARLES wrestler to Frederick. - - -OLIVER | - | -JAQUES (JAQUES DE BOYS:) | sons of Sir Rowland de Boys. - | -ORLANDO | - - -ADAM | - | servants to Oliver. -DENNIS | - - -TOUCHSTONE a clown. - -SIR OLIVER MARTEXT a vicar. - - -CORIN | - | shepherds. -SILVIUS | - - -WILLIAM a country fellow in love with Audrey. - - A person representing HYMEN. (HYMEN:) - -ROSALIND daughter to the banished duke. - -CELIA daughter to Frederick. - -PHEBE a shepherdess. - -AUDREY a country wench. - - Lords, pages, and attendants, &c. - (Forester:) - (A Lord:) - (First Lord:) - (Second Lord:) - (First Page:) - (Second Page:) - - -SCENE Oliver's house; Duke Frederick's court; and the - Forest of Arden. - - - - - AS YOU LIKE IT - - -ACT I - - - -SCENE I Orchard of Oliver's house. - - - [Enter ORLANDO and ADAM] - -ORLANDO As I remember, Adam, it was upon this fashion - bequeathed me by will but poor a thousand crowns, - and, as thou sayest, charged my brother, on his - blessing, to breed me well: and there begins my - sadness. My brother Jaques he keeps at school, and - report speaks goldenly of his profit: for my part, - he keeps me rustically at home, or, to speak more - properly, stays me here at home unkept; for call you - that keeping for a gentleman of my birth, that - differs not from the stalling of an ox? His horses - are bred better; for, besides that they are fair - with their feeding, they are taught their manage, - and to that end riders dearly hired: but I, his - brother, gain nothing under him but growth; for the - which his animals on his dunghills are as much - bound to him as I. Besides this nothing that he so - plentifully gives me, the something that nature gave - me his countenance seems to take from me: he lets - me feed with his hinds, bars me the place of a - brother, and, as much as in him lies, mines my - gentility with my education. This is it, Adam, that - grieves me; and the spirit of my father, which I - think is within me, begins to mutiny against this - servitude: I will no longer endure it, though yet I - know no wise remedy how to avoid it. - -ADAM Yonder comes my master, your brother. - -ORLANDO Go apart, Adam, and thou shalt hear how he will - shake me up. - - [Enter OLIVER] - -OLIVER Now, sir! what make you here? - -ORLANDO Nothing: I am not taught to make any thing. - -OLIVER What mar you then, sir? - -ORLANDO Marry, sir, I am helping you to mar that which God - made, a poor unworthy brother of yours, with idleness. - -OLIVER Marry, sir, be better employed, and be naught awhile. - -ORLANDO Shall I keep your hogs and eat husks with them? - What prodigal portion have I spent, that I should - come to such penury? - -OLIVER Know you where your are, sir? - -ORLANDO O, sir, very well; here in your orchard. - -OLIVER Know you before whom, sir? - -ORLANDO Ay, better than him I am before knows me. I know - you are my eldest brother; and, in the gentle - condition of blood, you should so know me. The - courtesy of nations allows you my better, in that - you are the first-born; but the same tradition - takes not away my blood, were there twenty brothers - betwixt us: I have as much of my father in me as - you; albeit, I confess, your coming before me is - nearer to his reverence. - -OLIVER What, boy! - -ORLANDO Come, come, elder brother, you are too young in this. - -OLIVER Wilt thou lay hands on me, villain? - -ORLANDO I am no villain; I am the youngest son of Sir - Rowland de Boys; he was my father, and he is thrice - a villain that says such a father begot villains. - Wert thou not my brother, I would not take this hand - from thy throat till this other had pulled out thy - tongue for saying so: thou hast railed on thyself. - -ADAM Sweet masters, be patient: for your father's - remembrance, be at accord. - -OLIVER Let me go, I say. - -ORLANDO I will not, till I please: you shall hear me. My - father charged you in his will to give me good - education: you have trained me like a peasant, - obscuring and hiding from me all gentleman-like - qualities. The spirit of my father grows strong in - me, and I will no longer endure it: therefore allow - me such exercises as may become a gentleman, or - give me the poor allottery my father left me by - testament; with that I will go buy my fortunes. - -OLIVER And what wilt thou do? beg, when that is spent? - Well, sir, get you in: I will not long be troubled - with you; you shall have some part of your will: I - pray you, leave me. - -ORLANDO I will no further offend you than becomes me for my good. - -OLIVER Get you with him, you old dog. - -ADAM Is 'old dog' my reward? Most true, I have lost my - teeth in your service. God be with my old master! - he would not have spoke such a word. - - [Exeunt ORLANDO and ADAM] - -OLIVER Is it even so? begin you to grow upon me? I will - physic your rankness, and yet give no thousand - crowns neither. Holla, Dennis! - - [Enter DENNIS] - -DENNIS Calls your worship? - -OLIVER Was not Charles, the duke's wrestler, here to speak with me? - -DENNIS So please you, he is here at the door and importunes - access to you. - -OLIVER Call him in. - - [Exit DENNIS] - - 'Twill be a good way; and to-morrow the wrestling is. - - [Enter CHARLES] - -CHARLES Good morrow to your worship. - -OLIVER Good Monsieur Charles, what's the new news at the - new court? - -CHARLES There's no news at the court, sir, but the old news: - that is, the old duke is banished by his younger - brother the new duke; and three or four loving lords - have put themselves into voluntary exile with him, - whose lands and revenues enrich the new duke; - therefore he gives them good leave to wander. - -OLIVER Can you tell if Rosalind, the duke's daughter, be - banished with her father? - -CHARLES O, no; for the duke's daughter, her cousin, so loves - her, being ever from their cradles bred together, - that she would have followed her exile, or have died - to stay behind her. She is at the court, and no - less beloved of her uncle than his own daughter; and - never two ladies loved as they do. - -OLIVER Where will the old duke live? - -CHARLES They say he is already in the forest of Arden, and - a many merry men with him; and there they live like - the old Robin Hood of England: they say many young - gentlemen flock to him every day, and fleet the time - carelessly, as they did in the golden world. - -OLIVER What, you wrestle to-morrow before the new duke? - -CHARLES Marry, do I, sir; and I came to acquaint you with a - matter. I am given, sir, secretly to understand - that your younger brother Orlando hath a disposition - to come in disguised against me to try a fall. - To-morrow, sir, I wrestle for my credit; and he that - escapes me without some broken limb shall acquit him - well. Your brother is but young and tender; and, - for your love, I would be loath to foil him, as I - must, for my own honour, if he come in: therefore, - out of my love to you, I came hither to acquaint you - withal, that either you might stay him from his - intendment or brook such disgrace well as he shall - run into, in that it is a thing of his own search - and altogether against my will. - -OLIVER Charles, I thank thee for thy love to me, which - thou shalt find I will most kindly requite. I had - myself notice of my brother's purpose herein and - have by underhand means laboured to dissuade him from - it, but he is resolute. I'll tell thee, Charles: - it is the stubbornest young fellow of France, full - of ambition, an envious emulator of every man's - good parts, a secret and villanous contriver against - me his natural brother: therefore use thy - discretion; I had as lief thou didst break his neck - as his finger. And thou wert best look to't; for if - thou dost him any slight disgrace or if he do not - mightily grace himself on thee, he will practise - against thee by poison, entrap thee by some - treacherous device and never leave thee till he - hath ta'en thy life by some indirect means or other; - for, I assure thee, and almost with tears I speak - it, there is not one so young and so villanous this - day living. I speak but brotherly of him; but - should I anatomize him to thee as he is, I must - blush and weep and thou must look pale and wonder. - -CHARLES I am heartily glad I came hither to you. If he come - to-morrow, I'll give him his payment: if ever he go - alone again, I'll never wrestle for prize more: and - so God keep your worship! - -OLIVER Farewell, good Charles. - - [Exit CHARLES] - - Now will I stir this gamester: I hope I shall see - an end of him; for my soul, yet I know not why, - hates nothing more than he. Yet he's gentle, never - schooled and yet learned, full of noble device, of - all sorts enchantingly beloved, and indeed so much - in the heart of the world, and especially of my own - people, who best know him, that I am altogether - misprised: but it shall not be so long; this - wrestler shall clear all: nothing remains but that - I kindle the boy thither; which now I'll go about. - - [Exit] - - - - - AS YOU LIKE IT - - -ACT I - - - -SCENE II Lawn before the Duke's palace. - - - [Enter CELIA and ROSALIND] - -CELIA I pray thee, Rosalind, sweet my coz, be merry. - -ROSALIND Dear Celia, I show more mirth than I am mistress of; - and would you yet I were merrier? Unless you could - teach me to forget a banished father, you must not - learn me how to remember any extraordinary pleasure. - -CELIA Herein I see thou lovest me not with the full weight - that I love thee. If my uncle, thy banished father, - had banished thy uncle, the duke my father, so thou - hadst been still with me, I could have taught my - love to take thy father for mine: so wouldst thou, - if the truth of thy love to me were so righteously - tempered as mine is to thee. - -ROSALIND Well, I will forget the condition of my estate, to - rejoice in yours. - -CELIA You know my father hath no child but I, nor none is - like to have: and, truly, when he dies, thou shalt - be his heir, for what he hath taken away from thy - father perforce, I will render thee again in - affection; by mine honour, I will; and when I break - that oath, let me turn monster: therefore, my - sweet Rose, my dear Rose, be merry. - -ROSALIND From henceforth I will, coz, and devise sports. Let - me see; what think you of falling in love? - -CELIA Marry, I prithee, do, to make sport withal: but - love no man in good earnest; nor no further in sport - neither than with safety of a pure blush thou mayst - in honour come off again. - -ROSALIND What shall be our sport, then? - -CELIA Let us sit and mock the good housewife Fortune from - her wheel, that her gifts may henceforth be bestowed equally. - -ROSALIND I would we could do so, for her benefits are - mightily misplaced, and the bountiful blind woman - doth most mistake in her gifts to women. - -CELIA 'Tis true; for those that she makes fair she scarce - makes honest, and those that she makes honest she - makes very ill-favouredly. - -ROSALIND Nay, now thou goest from Fortune's office to - Nature's: Fortune reigns in gifts of the world, - not in the lineaments of Nature. - - [Enter TOUCHSTONE] - -CELIA No? when Nature hath made a fair creature, may she - not by Fortune fall into the fire? Though Nature - hath given us wit to flout at Fortune, hath not - Fortune sent in this fool to cut off the argument? - -ROSALIND Indeed, there is Fortune too hard for Nature, when - Fortune makes Nature's natural the cutter-off of - Nature's wit. - -CELIA Peradventure this is not Fortune's work neither, but - Nature's; who perceiveth our natural wits too dull - to reason of such goddesses and hath sent this - natural for our whetstone; for always the dulness of - the fool is the whetstone of the wits. How now, - wit! whither wander you? - -TOUCHSTONE Mistress, you must come away to your father. - -CELIA Were you made the messenger? - -TOUCHSTONE No, by mine honour, but I was bid to come for you. - -ROSALIND Where learned you that oath, fool? - -TOUCHSTONE Of a certain knight that swore by his honour they - were good pancakes and swore by his honour the - mustard was naught: now I'll stand to it, the - pancakes were naught and the mustard was good, and - yet was not the knight forsworn. - -CELIA How prove you that, in the great heap of your - knowledge? - -ROSALIND Ay, marry, now unmuzzle your wisdom. - -TOUCHSTONE Stand you both forth now: stroke your chins, and - swear by your beards that I am a knave. - -CELIA By our beards, if we had them, thou art. - -TOUCHSTONE By my knavery, if I had it, then I were; but if you - swear by that that is not, you are not forsworn: no - more was this knight swearing by his honour, for he - never had any; or if he had, he had sworn it away - before ever he saw those pancakes or that mustard. - -CELIA Prithee, who is't that thou meanest? - -TOUCHSTONE One that old Frederick, your father, loves. - -CELIA My father's love is enough to honour him: enough! - speak no more of him; you'll be whipped for taxation - one of these days. - -TOUCHSTONE The more pity, that fools may not speak wisely what - wise men do foolishly. - -CELIA By my troth, thou sayest true; for since the little - wit that fools have was silenced, the little foolery - that wise men have makes a great show. Here comes - Monsieur Le Beau. - -ROSALIND With his mouth full of news. - -CELIA Which he will put on us, as pigeons feed their young. - -ROSALIND Then shall we be news-crammed. - -CELIA All the better; we shall be the more marketable. - - [Enter LE BEAU] - - Bon jour, Monsieur Le Beau: what's the news? - -LE BEAU Fair princess, you have lost much good sport. - -CELIA Sport! of what colour? - -LE BEAU What colour, madam! how shall I answer you? - -ROSALIND As wit and fortune will. - -TOUCHSTONE Or as the Destinies decree. - -CELIA Well said: that was laid on with a trowel. - -TOUCHSTONE Nay, if I keep not my rank,-- - -ROSALIND Thou losest thy old smell. - -LE BEAU You amaze me, ladies: I would have told you of good - wrestling, which you have lost the sight of. - -ROSALIND You tell us the manner of the wrestling. - -LE BEAU I will tell you the beginning; and, if it please - your ladyships, you may see the end; for the best is - yet to do; and here, where you are, they are coming - to perform it. - -CELIA Well, the beginning, that is dead and buried. - -LE BEAU There comes an old man and his three sons,-- - -CELIA I could match this beginning with an old tale. - -LE BEAU Three proper young men, of excellent growth and presence. - -ROSALIND With bills on their necks, 'Be it known unto all men - by these presents.' - -LE BEAU The eldest of the three wrestled with Charles, the - duke's wrestler; which Charles in a moment threw him - and broke three of his ribs, that there is little - hope of life in him: so he served the second, and - so the third. Yonder they lie; the poor old man, - their father, making such pitiful dole over them - that all the beholders take his part with weeping. - -ROSALIND Alas! - -TOUCHSTONE But what is the sport, monsieur, that the ladies - have lost? - -LE BEAU Why, this that I speak of. - -TOUCHSTONE Thus men may grow wiser every day: it is the first - time that ever I heard breaking of ribs was sport - for ladies. - -CELIA Or I, I promise thee. - -ROSALIND But is there any else longs to see this broken music - in his sides? is there yet another dotes upon - rib-breaking? Shall we see this wrestling, cousin? - -LE BEAU You must, if you stay here; for here is the place - appointed for the wrestling, and they are ready to - perform it. - -CELIA Yonder, sure, they are coming: let us now stay and see it. - - [Flourish. Enter DUKE FREDERICK, Lords, ORLANDO, - CHARLES, and Attendants] - -DUKE FREDERICK Come on: since the youth will not be entreated, his - own peril on his forwardness. - -ROSALIND Is yonder the man? - -LE BEAU Even he, madam. - -CELIA Alas, he is too young! yet he looks successfully. - -DUKE FREDERICK How now, daughter and cousin! are you crept hither - to see the wrestling? - -ROSALIND Ay, my liege, so please you give us leave. - -DUKE FREDERICK You will take little delight in it, I can tell you; - there is such odds in the man. In pity of the - challenger's youth I would fain dissuade him, but he - will not be entreated. Speak to him, ladies; see if - you can move him. - -CELIA Call him hither, good Monsieur Le Beau. - -DUKE FREDERICK Do so: I'll not be by. - -LE BEAU Monsieur the challenger, the princesses call for you. - -ORLANDO I attend them with all respect and duty. - -ROSALIND Young man, have you challenged Charles the wrestler? - -ORLANDO No, fair princess; he is the general challenger: I - come but in, as others do, to try with him the - strength of my youth. - -CELIA Young gentleman, your spirits are too bold for your - years. You have seen cruel proof of this man's - strength: if you saw yourself with your eyes or - knew yourself with your judgment, the fear of your - adventure would counsel you to a more equal - enterprise. We pray you, for your own sake, to - embrace your own safety and give over this attempt. - -ROSALIND Do, young sir; your reputation shall not therefore - be misprised: we will make it our suit to the duke - that the wrestling might not go forward. - -ORLANDO I beseech you, punish me not with your hard - thoughts; wherein I confess me much guilty, to deny - so fair and excellent ladies any thing. But let - your fair eyes and gentle wishes go with me to my - trial: wherein if I be foiled, there is but one - shamed that was never gracious; if killed, but one - dead that was willing to be so: I shall do my - friends no wrong, for I have none to lament me, the - world no injury, for in it I have nothing; only in - the world I fill up a place, which may be better - supplied when I have made it empty. - -ROSALIND The little strength that I have, I would it were with you. - -CELIA And mine, to eke out hers. - -ROSALIND Fare you well: pray heaven I be deceived in you! - -CELIA Your heart's desires be with you! - -CHARLES Come, where is this young gallant that is so - desirous to lie with his mother earth? - -ORLANDO Ready, sir; but his will hath in it a more modest working. - -DUKE FREDERICK You shall try but one fall. - -CHARLES No, I warrant your grace, you shall not entreat him - to a second, that have so mightily persuaded him - from a first. - -ORLANDO An you mean to mock me after, you should not have - mocked me before: but come your ways. - -ROSALIND Now Hercules be thy speed, young man! - -CELIA I would I were invisible, to catch the strong - fellow by the leg. - - [They wrestle] - -ROSALIND O excellent young man! - -CELIA If I had a thunderbolt in mine eye, I can tell who - should down. - - [Shout. CHARLES is thrown] - -DUKE FREDERICK No more, no more. - -ORLANDO Yes, I beseech your grace: I am not yet well breathed. - -DUKE FREDERICK How dost thou, Charles? - -LE BEAU He cannot speak, my lord. - -DUKE FREDERICK Bear him away. What is thy name, young man? - -ORLANDO Orlando, my liege; the youngest son of Sir Rowland de Boys. - -DUKE FREDERICK I would thou hadst been son to some man else: - The world esteem'd thy father honourable, - But I did find him still mine enemy: - Thou shouldst have better pleased me with this deed, - Hadst thou descended from another house. - But fare thee well; thou art a gallant youth: - I would thou hadst told me of another father. - - [Exeunt DUKE FREDERICK, train, and LE BEAU] - -CELIA Were I my father, coz, would I do this? - -ORLANDO I am more proud to be Sir Rowland's son, - His youngest son; and would not change that calling, - To be adopted heir to Frederick. - -ROSALIND My father loved Sir Rowland as his soul, - And all the world was of my father's mind: - Had I before known this young man his son, - I should have given him tears unto entreaties, - Ere he should thus have ventured. - -CELIA Gentle cousin, - Let us go thank him and encourage him: - My father's rough and envious disposition - Sticks me at heart. Sir, you have well deserved: - If you do keep your promises in love - But justly, as you have exceeded all promise, - Your mistress shall be happy. - -ROSALIND Gentleman, - - [Giving him a chain from her neck] - - Wear this for me, one out of suits with fortune, - That could give more, but that her hand lacks means. - Shall we go, coz? - -CELIA Ay. Fare you well, fair gentleman. - -ORLANDO Can I not say, I thank you? My better parts - Are all thrown down, and that which here stands up - Is but a quintain, a mere lifeless block. - -ROSALIND He calls us back: my pride fell with my fortunes; - I'll ask him what he would. Did you call, sir? - Sir, you have wrestled well and overthrown - More than your enemies. - -CELIA Will you go, coz? - -ROSALIND Have with you. Fare you well. - - [Exeunt ROSALIND and CELIA] - -ORLANDO What passion hangs these weights upon my tongue? - I cannot speak to her, yet she urged conference. - O poor Orlando, thou art overthrown! - Or Charles or something weaker masters thee. - - [Re-enter LE BEAU] - -LE BEAU Good sir, I do in friendship counsel you - To leave this place. Albeit you have deserved - High commendation, true applause and love, - Yet such is now the duke's condition - That he misconstrues all that you have done. - The duke is humorous; what he is indeed, - More suits you to conceive than I to speak of. - -ORLANDO I thank you, sir: and, pray you, tell me this: - Which of the two was daughter of the duke - That here was at the wrestling? - -LE BEAU Neither his daughter, if we judge by manners; - But yet indeed the lesser is his daughter - The other is daughter to the banish'd duke, - And here detain'd by her usurping uncle, - To keep his daughter company; whose loves - Are dearer than the natural bond of sisters. - But I can tell you that of late this duke - Hath ta'en displeasure 'gainst his gentle niece, - Grounded upon no other argument - But that the people praise her for her virtues - And pity her for her good father's sake; - And, on my life, his malice 'gainst the lady - Will suddenly break forth. Sir, fare you well: - Hereafter, in a better world than this, - I shall desire more love and knowledge of you. - -ORLANDO I rest much bounden to you: fare you well. - - [Exit LE BEAU] - - Thus must I from the smoke into the smother; - From tyrant duke unto a tyrant brother: - But heavenly Rosalind! - - [Exit] - - - - - AS YOU LIKE IT - - -ACT I - - - -SCENE III A room in the palace. - - - [Enter CELIA and ROSALIND] - -CELIA Why, cousin! why, Rosalind! Cupid have mercy! not a word? - -ROSALIND Not one to throw at a dog. - -CELIA No, thy words are too precious to be cast away upon - curs; throw some of them at me; come, lame me with reasons. - -ROSALIND Then there were two cousins laid up; when the one - should be lamed with reasons and the other mad - without any. - -CELIA But is all this for your father? - -ROSALIND No, some of it is for my child's father. O, how - full of briers is this working-day world! - -CELIA They are but burs, cousin, thrown upon thee in - holiday foolery: if we walk not in the trodden - paths our very petticoats will catch them. - -ROSALIND I could shake them off my coat: these burs are in my heart. - -CELIA Hem them away. - -ROSALIND I would try, if I could cry 'hem' and have him. - -CELIA Come, come, wrestle with thy affections. - -ROSALIND O, they take the part of a better wrestler than myself! - -CELIA O, a good wish upon you! you will try in time, in - despite of a fall. But, turning these jests out of - service, let us talk in good earnest: is it - possible, on such a sudden, you should fall into so - strong a liking with old Sir Rowland's youngest son? - -ROSALIND The duke my father loved his father dearly. - -CELIA Doth it therefore ensue that you should love his son - dearly? By this kind of chase, I should hate him, - for my father hated his father dearly; yet I hate - not Orlando. - -ROSALIND No, faith, hate him not, for my sake. - -CELIA Why should I not? doth he not deserve well? - -ROSALIND Let me love him for that, and do you love him - because I do. Look, here comes the duke. - -CELIA With his eyes full of anger. - - [Enter DUKE FREDERICK, with Lords] - -DUKE FREDERICK Mistress, dispatch you with your safest haste - And get you from our court. - -ROSALIND Me, uncle? - -DUKE FREDERICK You, cousin - Within these ten days if that thou be'st found - So near our public court as twenty miles, - Thou diest for it. - -ROSALIND I do beseech your grace, - Let me the knowledge of my fault bear with me: - If with myself I hold intelligence - Or have acquaintance with mine own desires, - If that I do not dream or be not frantic,-- - As I do trust I am not--then, dear uncle, - Never so much as in a thought unborn - Did I offend your highness. - -DUKE FREDERICK Thus do all traitors: - If their purgation did consist in words, - They are as innocent as grace itself: - Let it suffice thee that I trust thee not. - -ROSALIND Yet your mistrust cannot make me a traitor: - Tell me whereon the likelihood depends. - -DUKE FREDERICK Thou art thy father's daughter; there's enough. - -ROSALIND So was I when your highness took his dukedom; - So was I when your highness banish'd him: - Treason is not inherited, my lord; - Or, if we did derive it from our friends, - What's that to me? my father was no traitor: - Then, good my liege, mistake me not so much - To think my poverty is treacherous. - -CELIA Dear sovereign, hear me speak. - -DUKE FREDERICK Ay, Celia; we stay'd her for your sake, - Else had she with her father ranged along. - -CELIA I did not then entreat to have her stay; - It was your pleasure and your own remorse: - I was too young that time to value her; - But now I know her: if she be a traitor, - Why so am I; we still have slept together, - Rose at an instant, learn'd, play'd, eat together, - And wheresoever we went, like Juno's swans, - Still we went coupled and inseparable. - -DUKE FREDERICK She is too subtle for thee; and her smoothness, - Her very silence and her patience - Speak to the people, and they pity her. - Thou art a fool: she robs thee of thy name; - And thou wilt show more bright and seem more virtuous - When she is gone. Then open not thy lips: - Firm and irrevocable is my doom - Which I have pass'd upon her; she is banish'd. - -CELIA Pronounce that sentence then on me, my liege: - I cannot live out of her company. - -DUKE FREDERICK You are a fool. You, niece, provide yourself: - If you outstay the time, upon mine honour, - And in the greatness of my word, you die. - - [Exeunt DUKE FREDERICK and Lords] - -CELIA O my poor Rosalind, whither wilt thou go? - Wilt thou change fathers? I will give thee mine. - I charge thee, be not thou more grieved than I am. - -ROSALIND I have more cause. - -CELIA Thou hast not, cousin; - Prithee be cheerful: know'st thou not, the duke - Hath banish'd me, his daughter? - -ROSALIND That he hath not. - -CELIA No, hath not? Rosalind lacks then the love - Which teacheth thee that thou and I am one: - Shall we be sunder'd? shall we part, sweet girl? - No: let my father seek another heir. - Therefore devise with me how we may fly, - Whither to go and what to bear with us; - And do not seek to take your change upon you, - To bear your griefs yourself and leave me out; - For, by this heaven, now at our sorrows pale, - Say what thou canst, I'll go along with thee. - -ROSALIND Why, whither shall we go? - -CELIA To seek my uncle in the forest of Arden. - -ROSALIND Alas, what danger will it be to us, - Maids as we are, to travel forth so far! - Beauty provoketh thieves sooner than gold. - -CELIA I'll put myself in poor and mean attire - And with a kind of umber smirch my face; - The like do you: so shall we pass along - And never stir assailants. - -ROSALIND Were it not better, - Because that I am more than common tall, - That I did suit me all points like a man? - A gallant curtle-axe upon my thigh, - A boar-spear in my hand; and--in my heart - Lie there what hidden woman's fear there will-- - We'll have a swashing and a martial outside, - As many other mannish cowards have - That do outface it with their semblances. - -CELIA What shall I call thee when thou art a man? - -ROSALIND I'll have no worse a name than Jove's own page; - And therefore look you call me Ganymede. - But what will you be call'd? - -CELIA Something that hath a reference to my state - No longer Celia, but Aliena. - -ROSALIND But, cousin, what if we assay'd to steal - The clownish fool out of your father's court? - Would he not be a comfort to our travel? - -CELIA He'll go along o'er the wide world with me; - Leave me alone to woo him. Let's away, - And get our jewels and our wealth together, - Devise the fittest time and safest way - To hide us from pursuit that will be made - After my flight. Now go we in content - To liberty and not to banishment. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT II - - - -SCENE I The Forest of Arden. - - - [Enter DUKE SENIOR, AMIENS, and two or three Lords, - like foresters] - -DUKE SENIOR Now, my co-mates and brothers in exile, - Hath not old custom made this life more sweet - Than that of painted pomp? Are not these woods - More free from peril than the envious court? - Here feel we but the penalty of Adam, - The seasons' difference, as the icy fang - And churlish chiding of the winter's wind, - Which, when it bites and blows upon my body, - Even till I shrink with cold, I smile and say - 'This is no flattery: these are counsellors - That feelingly persuade me what I am.' - Sweet are the uses of adversity, - Which, like the toad, ugly and venomous, - Wears yet a precious jewel in his head; - And this our life exempt from public haunt - Finds tongues in trees, books in the running brooks, - Sermons in stones and good in every thing. - I would not change it. - -AMIENS Happy is your grace, - That can translate the stubbornness of fortune - Into so quiet and so sweet a style. - -DUKE SENIOR Come, shall we go and kill us venison? - And yet it irks me the poor dappled fools, - Being native burghers of this desert city, - Should in their own confines with forked heads - Have their round haunches gored. - -First Lord Indeed, my lord, - The melancholy Jaques grieves at that, - And, in that kind, swears you do more usurp - Than doth your brother that hath banish'd you. - To-day my Lord of Amiens and myself - Did steal behind him as he lay along - Under an oak whose antique root peeps out - Upon the brook that brawls along this wood: - To the which place a poor sequester'd stag, - That from the hunter's aim had ta'en a hurt, - Did come to languish, and indeed, my lord, - The wretched animal heaved forth such groans - That their discharge did stretch his leathern coat - Almost to bursting, and the big round tears - Coursed one another down his innocent nose - In piteous chase; and thus the hairy fool - Much marked of the melancholy Jaques, - Stood on the extremest verge of the swift brook, - Augmenting it with tears. - -DUKE SENIOR But what said Jaques? - Did he not moralize this spectacle? - -First Lord O, yes, into a thousand similes. - First, for his weeping into the needless stream; - 'Poor deer,' quoth he, 'thou makest a testament - As worldlings do, giving thy sum of more - To that which had too much:' then, being there alone, - Left and abandon'd of his velvet friends, - ''Tis right:' quoth he; 'thus misery doth part - The flux of company:' anon a careless herd, - Full of the pasture, jumps along by him - And never stays to greet him; 'Ay' quoth Jaques, - 'Sweep on, you fat and greasy citizens; - 'Tis just the fashion: wherefore do you look - Upon that poor and broken bankrupt there?' - Thus most invectively he pierceth through - The body of the country, city, court, - Yea, and of this our life, swearing that we - Are mere usurpers, tyrants and what's worse, - To fright the animals and to kill them up - In their assign'd and native dwelling-place. - -DUKE SENIOR And did you leave him in this contemplation? - -Second Lord We did, my lord, weeping and commenting - Upon the sobbing deer. - -DUKE SENIOR Show me the place: - I love to cope him in these sullen fits, - For then he's full of matter. - -First Lord I'll bring you to him straight. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT II - - - -SCENE II A room in the palace. - - - [Enter DUKE FREDERICK, with Lords] - -DUKE FREDERICK Can it be possible that no man saw them? - It cannot be: some villains of my court - Are of consent and sufferance in this. - -First Lord I cannot hear of any that did see her. - The ladies, her attendants of her chamber, - Saw her abed, and in the morning early - They found the bed untreasured of their mistress. - -Second Lord My lord, the roynish clown, at whom so oft - Your grace was wont to laugh, is also missing. - Hisperia, the princess' gentlewoman, - Confesses that she secretly o'erheard - Your daughter and her cousin much commend - The parts and graces of the wrestler - That did but lately foil the sinewy Charles; - And she believes, wherever they are gone, - That youth is surely in their company. - -DUKE FREDERICK Send to his brother; fetch that gallant hither; - If he be absent, bring his brother to me; - I'll make him find him: do this suddenly, - And let not search and inquisition quail - To bring again these foolish runaways. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT II - - - -SCENE III Before OLIVER'S house. - - - [Enter ORLANDO and ADAM, meeting] - -ORLANDO Who's there? - -ADAM What, my young master? O, my gentle master! - O my sweet master! O you memory - Of old Sir Rowland! why, what make you here? - Why are you virtuous? why do people love you? - And wherefore are you gentle, strong and valiant? - Why would you be so fond to overcome - The bonny priser of the humorous duke? - Your praise is come too swiftly home before you. - Know you not, master, to some kind of men - Their graces serve them but as enemies? - No more do yours: your virtues, gentle master, - Are sanctified and holy traitors to you. - O, what a world is this, when what is comely - Envenoms him that bears it! - -ORLANDO Why, what's the matter? - -ADAM O unhappy youth! - Come not within these doors; within this roof - The enemy of all your graces lives: - Your brother--no, no brother; yet the son-- - Yet not the son, I will not call him son - Of him I was about to call his father-- - Hath heard your praises, and this night he means - To burn the lodging where you use to lie - And you within it: if he fail of that, - He will have other means to cut you off. - I overheard him and his practises. - This is no place; this house is but a butchery: - Abhor it, fear it, do not enter it. - -ORLANDO Why, whither, Adam, wouldst thou have me go? - -ADAM No matter whither, so you come not here. - -ORLANDO What, wouldst thou have me go and beg my food? - Or with a base and boisterous sword enforce - A thievish living on the common road? - This I must do, or know not what to do: - Yet this I will not do, do how I can; - I rather will subject me to the malice - Of a diverted blood and bloody brother. - -ADAM But do not so. I have five hundred crowns, - The thrifty hire I saved under your father, - Which I did store to be my foster-nurse - When service should in my old limbs lie lame - And unregarded age in corners thrown: - Take that, and He that doth the ravens feed, - Yea, providently caters for the sparrow, - Be comfort to my age! Here is the gold; - And all this I give you. Let me be your servant: - Though I look old, yet I am strong and lusty; - For in my youth I never did apply - Hot and rebellious liquors in my blood, - Nor did not with unbashful forehead woo - The means of weakness and debility; - Therefore my age is as a lusty winter, - Frosty, but kindly: let me go with you; - I'll do the service of a younger man - In all your business and necessities. - -ORLANDO O good old man, how well in thee appears - The constant service of the antique world, - When service sweat for duty, not for meed! - Thou art not for the fashion of these times, - Where none will sweat but for promotion, - And having that, do choke their service up - Even with the having: it is not so with thee. - But, poor old man, thou prunest a rotten tree, - That cannot so much as a blossom yield - In lieu of all thy pains and husbandry - But come thy ways; well go along together, - And ere we have thy youthful wages spent, - We'll light upon some settled low content. - -ADAM Master, go on, and I will follow thee, - To the last gasp, with truth and loyalty. - From seventeen years till now almost fourscore - Here lived I, but now live here no more. - At seventeen years many their fortunes seek; - But at fourscore it is too late a week: - Yet fortune cannot recompense me better - Than to die well and not my master's debtor. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT II - - - -SCENE IV The Forest of Arden. - - - [Enter ROSALIND for Ganymede, CELIA for Aliena, - and TOUCHSTONE] - -ROSALIND O Jupiter, how weary are my spirits! - -TOUCHSTONE I care not for my spirits, if my legs were not weary. - -ROSALIND I could find in my heart to disgrace my man's - apparel and to cry like a woman; but I must comfort - the weaker vessel, as doublet and hose ought to show - itself courageous to petticoat: therefore courage, - good Aliena! - -CELIA I pray you, bear with me; I cannot go no further. - -TOUCHSTONE For my part, I had rather bear with you than bear - you; yet I should bear no cross if I did bear you, - for I think you have no money in your purse. - -ROSALIND Well, this is the forest of Arden. - -TOUCHSTONE Ay, now am I in Arden; the more fool I; when I was - at home, I was in a better place: but travellers - must be content. - -ROSALIND Ay, be so, good Touchstone. - - [Enter CORIN and SILVIUS] - - Look you, who comes here; a young man and an old in - solemn talk. - -CORIN That is the way to make her scorn you still. - -SILVIUS O Corin, that thou knew'st how I do love her! - -CORIN I partly guess; for I have loved ere now. - -SILVIUS No, Corin, being old, thou canst not guess, - Though in thy youth thou wast as true a lover - As ever sigh'd upon a midnight pillow: - But if thy love were ever like to mine-- - As sure I think did never man love so-- - How many actions most ridiculous - Hast thou been drawn to by thy fantasy? - -CORIN Into a thousand that I have forgotten. - -SILVIUS O, thou didst then ne'er love so heartily! - If thou remember'st not the slightest folly - That ever love did make thee run into, - Thou hast not loved: - Or if thou hast not sat as I do now, - Wearying thy hearer in thy mistress' praise, - Thou hast not loved: - Or if thou hast not broke from company - Abruptly, as my passion now makes me, - Thou hast not loved. - O Phebe, Phebe, Phebe! - - [Exit] - -ROSALIND Alas, poor shepherd! searching of thy wound, - I have by hard adventure found mine own. - -TOUCHSTONE And I mine. I remember, when I was in love I broke - my sword upon a stone and bid him take that for - coming a-night to Jane Smile; and I remember the - kissing of her batlet and the cow's dugs that her - pretty chopt hands had milked; and I remember the - wooing of a peascod instead of her, from whom I took - two cods and, giving her them again, said with - weeping tears 'Wear these for my sake.' We that are - true lovers run into strange capers; but as all is - mortal in nature, so is all nature in love mortal in folly. - -ROSALIND Thou speakest wiser than thou art ware of. - -TOUCHSTONE Nay, I shall ne'er be ware of mine own wit till I - break my shins against it. - -ROSALIND Jove, Jove! this shepherd's passion - Is much upon my fashion. - -TOUCHSTONE And mine; but it grows something stale with me. - -CELIA I pray you, one of you question yond man - If he for gold will give us any food: - I faint almost to death. - -TOUCHSTONE Holla, you clown! - -ROSALIND Peace, fool: he's not thy kinsman. - -CORIN Who calls? - -TOUCHSTONE Your betters, sir. - -CORIN Else are they very wretched. - -ROSALIND Peace, I say. Good even to you, friend. - -CORIN And to you, gentle sir, and to you all. - -ROSALIND I prithee, shepherd, if that love or gold - Can in this desert place buy entertainment, - Bring us where we may rest ourselves and feed: - Here's a young maid with travel much oppress'd - And faints for succor. - -CORIN Fair sir, I pity her - And wish, for her sake more than for mine own, - My fortunes were more able to relieve her; - But I am shepherd to another man - And do not shear the fleeces that I graze: - My master is of churlish disposition - And little recks to find the way to heaven - By doing deeds of hospitality: - Besides, his cote, his flocks and bounds of feed - Are now on sale, and at our sheepcote now, - By reason of his absence, there is nothing - That you will feed on; but what is, come see. - And in my voice most welcome shall you be. - -ROSALIND What is he that shall buy his flock and pasture? - -CORIN That young swain that you saw here but erewhile, - That little cares for buying any thing. - -ROSALIND I pray thee, if it stand with honesty, - Buy thou the cottage, pasture and the flock, - And thou shalt have to pay for it of us. - -CELIA And we will mend thy wages. I like this place. - And willingly could waste my time in it. - -CORIN Assuredly the thing is to be sold: - Go with me: if you like upon report - The soil, the profit and this kind of life, - I will your very faithful feeder be - And buy it with your gold right suddenly. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT II - - - -SCENE V The Forest. - - - [Enter AMIENS, JAQUES, and others] - - SONG. -AMIENS Under the greenwood tree - Who loves to lie with me, - And turn his merry note - Unto the sweet bird's throat, - Come hither, come hither, come hither: - Here shall he see No enemy - But winter and rough weather. - -JAQUES More, more, I prithee, more. - -AMIENS It will make you melancholy, Monsieur Jaques. - -JAQUES I thank it. More, I prithee, more. I can suck - melancholy out of a song, as a weasel sucks eggs. - More, I prithee, more. - -AMIENS My voice is ragged: I know I cannot please you. - -JAQUES I do not desire you to please me; I do desire you to - sing. Come, more; another stanzo: call you 'em stanzos? - -AMIENS What you will, Monsieur Jaques. - -JAQUES Nay, I care not for their names; they owe me - nothing. Will you sing? - -AMIENS More at your request than to please myself. - -JAQUES Well then, if ever I thank any man, I'll thank you; - but that they call compliment is like the encounter - of two dog-apes, and when a man thanks me heartily, - methinks I have given him a penny and he renders me - the beggarly thanks. Come, sing; and you that will - not, hold your tongues. - -AMIENS Well, I'll end the song. Sirs, cover the while; the - duke will drink under this tree. He hath been all - this day to look you. - -JAQUES And I have been all this day to avoid him. He is - too disputable for my company: I think of as many - matters as he, but I give heaven thanks and make no - boast of them. Come, warble, come. - - SONG. - Who doth ambition shun - - [All together here] - - And loves to live i' the sun, - Seeking the food he eats - And pleased with what he gets, - Come hither, come hither, come hither: - Here shall he see No enemy - But winter and rough weather. - -JAQUES I'll give you a verse to this note that I made - yesterday in despite of my invention. - -AMIENS And I'll sing it. - -JAQUES Thus it goes:-- - - If it do come to pass - That any man turn ass, - Leaving his wealth and ease, - A stubborn will to please, - Ducdame, ducdame, ducdame: - Here shall he see - Gross fools as he, - An if he will come to me. - -AMIENS What's that 'ducdame'? - -JAQUES 'Tis a Greek invocation, to call fools into a - circle. I'll go sleep, if I can; if I cannot, I'll - rail against all the first-born of Egypt. - -AMIENS And I'll go seek the duke: his banquet is prepared. - - [Exeunt severally] - - - - - AS YOU LIKE IT - - -ACT II - - - -SCENE VI The forest. - - - [Enter ORLANDO and ADAM] - -ADAM Dear master, I can go no further. O, I die for food! - Here lie I down, and measure out my grave. Farewell, - kind master. - -ORLANDO Why, how now, Adam! no greater heart in thee? Live - a little; comfort a little; cheer thyself a little. - If this uncouth forest yield any thing savage, I - will either be food for it or bring it for food to - thee. Thy conceit is nearer death than thy powers. - For my sake be comfortable; hold death awhile at - the arm's end: I will here be with thee presently; - and if I bring thee not something to eat, I will - give thee leave to die: but if thou diest before I - come, thou art a mocker of my labour. Well said! - thou lookest cheerly, and I'll be with thee quickly. - Yet thou liest in the bleak air: come, I will bear - thee to some shelter; and thou shalt not die for - lack of a dinner, if there live any thing in this - desert. Cheerly, good Adam! - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT II - - - -SCENE VII The forest. - - - [A table set out. Enter DUKE SENIOR, AMIENS, and - Lords like outlaws] - -DUKE SENIOR I think he be transform'd into a beast; - For I can no where find him like a man. - -First Lord My lord, he is but even now gone hence: - Here was he merry, hearing of a song. - -DUKE SENIOR If he, compact of jars, grow musical, - We shall have shortly discord in the spheres. - Go, seek him: tell him I would speak with him. - - [Enter JAQUES] - -First Lord He saves my labour by his own approach. - -DUKE SENIOR Why, how now, monsieur! what a life is this, - That your poor friends must woo your company? - What, you look merrily! - -JAQUES A fool, a fool! I met a fool i' the forest, - A motley fool; a miserable world! - As I do live by food, I met a fool - Who laid him down and bask'd him in the sun, - And rail'd on Lady Fortune in good terms, - In good set terms and yet a motley fool. - 'Good morrow, fool,' quoth I. 'No, sir,' quoth he, - 'Call me not fool till heaven hath sent me fortune:' - And then he drew a dial from his poke, - And, looking on it with lack-lustre eye, - Says very wisely, 'It is ten o'clock: - Thus we may see,' quoth he, 'how the world wags: - 'Tis but an hour ago since it was nine, - And after one hour more 'twill be eleven; - And so, from hour to hour, we ripe and ripe, - And then, from hour to hour, we rot and rot; - And thereby hangs a tale.' When I did hear - The motley fool thus moral on the time, - My lungs began to crow like chanticleer, - That fools should be so deep-contemplative, - And I did laugh sans intermission - An hour by his dial. O noble fool! - A worthy fool! Motley's the only wear. - -DUKE SENIOR What fool is this? - -JAQUES O worthy fool! One that hath been a courtier, - And says, if ladies be but young and fair, - They have the gift to know it: and in his brain, - Which is as dry as the remainder biscuit - After a voyage, he hath strange places cramm'd - With observation, the which he vents - In mangled forms. O that I were a fool! - I am ambitious for a motley coat. - -DUKE SENIOR Thou shalt have one. - -JAQUES It is my only suit; - Provided that you weed your better judgments - Of all opinion that grows rank in them - That I am wise. I must have liberty - Withal, as large a charter as the wind, - To blow on whom I please; for so fools have; - And they that are most galled with my folly, - They most must laugh. And why, sir, must they so? - The 'why' is plain as way to parish church: - He that a fool doth very wisely hit - Doth very foolishly, although he smart, - Not to seem senseless of the bob: if not, - The wise man's folly is anatomized - Even by the squandering glances of the fool. - Invest me in my motley; give me leave - To speak my mind, and I will through and through - Cleanse the foul body of the infected world, - If they will patiently receive my medicine. - -DUKE SENIOR Fie on thee! I can tell what thou wouldst do. - -JAQUES What, for a counter, would I do but good? - -DUKE SENIOR Most mischievous foul sin, in chiding sin: - For thou thyself hast been a libertine, - As sensual as the brutish sting itself; - And all the embossed sores and headed evils, - That thou with licence of free foot hast caught, - Wouldst thou disgorge into the general world. - -JAQUES Why, who cries out on pride, - That can therein tax any private party? - Doth it not flow as hugely as the sea, - Till that the weary very means do ebb? - What woman in the city do I name, - When that I say the city-woman bears - The cost of princes on unworthy shoulders? - Who can come in and say that I mean her, - When such a one as she such is her neighbour? - Or what is he of basest function - That says his bravery is not of my cost, - Thinking that I mean him, but therein suits - His folly to the mettle of my speech? - There then; how then? what then? Let me see wherein - My tongue hath wrong'd him: if it do him right, - Then he hath wrong'd himself; if he be free, - Why then my taxing like a wild-goose flies, - Unclaim'd of any man. But who comes here? - - [Enter ORLANDO, with his sword drawn] - -ORLANDO Forbear, and eat no more. - -JAQUES Why, I have eat none yet. - -ORLANDO Nor shalt not, till necessity be served. - -JAQUES Of what kind should this cock come of? - -DUKE SENIOR Art thou thus bolden'd, man, by thy distress, - Or else a rude despiser of good manners, - That in civility thou seem'st so empty? - -ORLANDO You touch'd my vein at first: the thorny point - Of bare distress hath ta'en from me the show - Of smooth civility: yet am I inland bred - And know some nurture. But forbear, I say: - He dies that touches any of this fruit - Till I and my affairs are answered. - -JAQUES An you will not be answered with reason, I must die. - -DUKE SENIOR What would you have? Your gentleness shall force - More than your force move us to gentleness. - -ORLANDO I almost die for food; and let me have it. - -DUKE SENIOR Sit down and feed, and welcome to our table. - -ORLANDO Speak you so gently? Pardon me, I pray you: - I thought that all things had been savage here; - And therefore put I on the countenance - Of stern commandment. But whate'er you are - That in this desert inaccessible, - Under the shade of melancholy boughs, - Lose and neglect the creeping hours of time - If ever you have look'd on better days, - If ever been where bells have knoll'd to church, - If ever sat at any good man's feast, - If ever from your eyelids wiped a tear - And know what 'tis to pity and be pitied, - Let gentleness my strong enforcement be: - In the which hope I blush, and hide my sword. - -DUKE SENIOR True is it that we have seen better days, - And have with holy bell been knoll'd to church - And sat at good men's feasts and wiped our eyes - Of drops that sacred pity hath engender'd: - And therefore sit you down in gentleness - And take upon command what help we have - That to your wanting may be minister'd. - -ORLANDO Then but forbear your food a little while, - Whiles, like a doe, I go to find my fawn - And give it food. There is an old poor man, - Who after me hath many a weary step - Limp'd in pure love: till he be first sufficed, - Oppress'd with two weak evils, age and hunger, - I will not touch a bit. - -DUKE SENIOR Go find him out, - And we will nothing waste till you return. - -ORLANDO I thank ye; and be blest for your good comfort! - - [Exit] - -DUKE SENIOR Thou seest we are not all alone unhappy: - This wide and universal theatre - Presents more woeful pageants than the scene - Wherein we play in. - -JAQUES All the world's a stage, - And all the men and women merely players: - They have their exits and their entrances; - And one man in his time plays many parts, - His acts being seven ages. At first the infant, - Mewling and puking in the nurse's arms. - And then the whining school-boy, with his satchel - And shining morning face, creeping like snail - Unwillingly to school. And then the lover, - Sighing like furnace, with a woeful ballad - Made to his mistress' eyebrow. Then a soldier, - Full of strange oaths and bearded like the pard, - Jealous in honour, sudden and quick in quarrel, - Seeking the bubble reputation - Even in the cannon's mouth. And then the justice, - In fair round belly with good capon lined, - With eyes severe and beard of formal cut, - Full of wise saws and modern instances; - And so he plays his part. The sixth age shifts - Into the lean and slipper'd pantaloon, - With spectacles on nose and pouch on side, - His youthful hose, well saved, a world too wide - For his shrunk shank; and his big manly voice, - Turning again toward childish treble, pipes - And whistles in his sound. Last scene of all, - That ends this strange eventful history, - Is second childishness and mere oblivion, - Sans teeth, sans eyes, sans taste, sans everything. - - [Re-enter ORLANDO, with ADAM] - -DUKE SENIOR Welcome. Set down your venerable burthen, - And let him feed. - -ORLANDO I thank you most for him. - -ADAM So had you need: - I scarce can speak to thank you for myself. - -DUKE SENIOR Welcome; fall to: I will not trouble you - As yet, to question you about your fortunes. - Give us some music; and, good cousin, sing. - - SONG. -AMIENS Blow, blow, thou winter wind. - Thou art not so unkind - As man's ingratitude; - Thy tooth is not so keen, - Because thou art not seen, - Although thy breath be rude. - Heigh-ho! sing, heigh-ho! unto the green holly: - Most friendship is feigning, most loving mere folly: - Then, heigh-ho, the holly! - This life is most jolly. - Freeze, freeze, thou bitter sky, - That dost not bite so nigh - As benefits forgot: - Though thou the waters warp, - Thy sting is not so sharp - As friend remember'd not. - Heigh-ho! sing, &c. - -DUKE SENIOR If that you were the good Sir Rowland's son, - As you have whisper'd faithfully you were, - And as mine eye doth his effigies witness - Most truly limn'd and living in your face, - Be truly welcome hither: I am the duke - That loved your father: the residue of your fortune, - Go to my cave and tell me. Good old man, - Thou art right welcome as thy master is. - Support him by the arm. Give me your hand, - And let me all your fortunes understand. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT III - - - -SCENE I A room in the palace. - - - [Enter DUKE FREDERICK, Lords, and OLIVER] - -DUKE FREDERICK Not see him since? Sir, sir, that cannot be: - But were I not the better part made mercy, - I should not seek an absent argument - Of my revenge, thou present. But look to it: - Find out thy brother, wheresoe'er he is; - Seek him with candle; bring him dead or living - Within this twelvemonth, or turn thou no more - To seek a living in our territory. - Thy lands and all things that thou dost call thine - Worth seizure do we seize into our hands, - Till thou canst quit thee by thy brothers mouth - Of what we think against thee. - -OLIVER O that your highness knew my heart in this! - I never loved my brother in my life. - -DUKE FREDERICK More villain thou. Well, push him out of doors; - And let my officers of such a nature - Make an extent upon his house and lands: - Do this expediently and turn him going. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT III - - - -SCENE II The forest. - - - [Enter ORLANDO, with a paper] - -ORLANDO Hang there, my verse, in witness of my love: - And thou, thrice-crowned queen of night, survey - With thy chaste eye, from thy pale sphere above, - Thy huntress' name that my full life doth sway. - O Rosalind! these trees shall be my books - And in their barks my thoughts I'll character; - That every eye which in this forest looks - Shall see thy virtue witness'd every where. - Run, run, Orlando; carve on every tree - The fair, the chaste and unexpressive she. - - [Exit] - - [Enter CORIN and TOUCHSTONE] - -CORIN And how like you this shepherd's life, Master Touchstone? - -TOUCHSTONE Truly, shepherd, in respect of itself, it is a good - life, but in respect that it is a shepherd's life, - it is naught. In respect that it is solitary, I - like it very well; but in respect that it is - private, it is a very vile life. Now, in respect it - is in the fields, it pleaseth me well; but in - respect it is not in the court, it is tedious. As - is it a spare life, look you, it fits my humour well; - but as there is no more plenty in it, it goes much - against my stomach. Hast any philosophy in thee, shepherd? - -CORIN No more but that I know the more one sickens the - worse at ease he is; and that he that wants money, - means and content is without three good friends; - that the property of rain is to wet and fire to - burn; that good pasture makes fat sheep, and that a - great cause of the night is lack of the sun; that - he that hath learned no wit by nature nor art may - complain of good breeding or comes of a very dull kindred. - -TOUCHSTONE Such a one is a natural philosopher. Wast ever in - court, shepherd? - -CORIN No, truly. - -TOUCHSTONE Then thou art damned. - -CORIN Nay, I hope. - -TOUCHSTONE Truly, thou art damned like an ill-roasted egg, all - on one side. - -CORIN For not being at court? Your reason. - -TOUCHSTONE Why, if thou never wast at court, thou never sawest - good manners; if thou never sawest good manners, - then thy manners must be wicked; and wickedness is - sin, and sin is damnation. Thou art in a parlous - state, shepherd. - -CORIN Not a whit, Touchstone: those that are good manners - at the court are as ridiculous in the country as the - behavior of the country is most mockable at the - court. You told me you salute not at the court, but - you kiss your hands: that courtesy would be - uncleanly, if courtiers were shepherds. - -TOUCHSTONE Instance, briefly; come, instance. - -CORIN Why, we are still handling our ewes, and their - fells, you know, are greasy. - -TOUCHSTONE Why, do not your courtier's hands sweat? and is not - the grease of a mutton as wholesome as the sweat of - a man? Shallow, shallow. A better instance, I say; come. - -CORIN Besides, our hands are hard. - -TOUCHSTONE Your lips will feel them the sooner. Shallow again. - A more sounder instance, come. - -CORIN And they are often tarred over with the surgery of - our sheep: and would you have us kiss tar? The - courtier's hands are perfumed with civet. - -TOUCHSTONE Most shallow man! thou worms-meat, in respect of a - good piece of flesh indeed! Learn of the wise, and - perpend: civet is of a baser birth than tar, the - very uncleanly flux of a cat. Mend the instance, shepherd. - -CORIN You have too courtly a wit for me: I'll rest. - -TOUCHSTONE Wilt thou rest damned? God help thee, shallow man! - God make incision in thee! thou art raw. - -CORIN Sir, I am a true labourer: I earn that I eat, get - that I wear, owe no man hate, envy no man's - happiness, glad of other men's good, content with my - harm, and the greatest of my pride is to see my ewes - graze and my lambs suck. - -TOUCHSTONE That is another simple sin in you, to bring the ewes - and the rams together and to offer to get your - living by the copulation of cattle; to be bawd to a - bell-wether, and to betray a she-lamb of a - twelvemonth to a crooked-pated, old, cuckoldly ram, - out of all reasonable match. If thou beest not - damned for this, the devil himself will have no - shepherds; I cannot see else how thou shouldst - 'scape. - -CORIN Here comes young Master Ganymede, my new mistress's brother. - - [Enter ROSALIND, with a paper, reading] - -ROSALIND From the east to western Ind, - No jewel is like Rosalind. - Her worth, being mounted on the wind, - Through all the world bears Rosalind. - All the pictures fairest lined - Are but black to Rosalind. - Let no fair be kept in mind - But the fair of Rosalind. - -TOUCHSTONE I'll rhyme you so eight years together, dinners and - suppers and sleeping-hours excepted: it is the - right butter-women's rank to market. - -ROSALIND Out, fool! - -TOUCHSTONE For a taste: - If a hart do lack a hind, - Let him seek out Rosalind. - If the cat will after kind, - So be sure will Rosalind. - Winter garments must be lined, - So must slender Rosalind. - They that reap must sheaf and bind; - Then to cart with Rosalind. - Sweetest nut hath sourest rind, - Such a nut is Rosalind. - He that sweetest rose will find - Must find love's prick and Rosalind. - This is the very false gallop of verses: why do you - infect yourself with them? - -ROSALIND Peace, you dull fool! I found them on a tree. - -TOUCHSTONE Truly, the tree yields bad fruit. - -ROSALIND I'll graff it with you, and then I shall graff it - with a medlar: then it will be the earliest fruit - i' the country; for you'll be rotten ere you be half - ripe, and that's the right virtue of the medlar. - -TOUCHSTONE You have said; but whether wisely or no, let the - forest judge. - - [Enter CELIA, with a writing] - -ROSALIND Peace! Here comes my sister, reading: stand aside. - -CELIA [Reads] - - Why should this a desert be? - For it is unpeopled? No: - Tongues I'll hang on every tree, - That shall civil sayings show: - Some, how brief the life of man - Runs his erring pilgrimage, - That the stretching of a span - Buckles in his sum of age; - Some, of violated vows - 'Twixt the souls of friend and friend: - But upon the fairest boughs, - Or at every sentence end, - Will I Rosalinda write, - Teaching all that read to know - The quintessence of every sprite - Heaven would in little show. - Therefore Heaven Nature charged - That one body should be fill'd - With all graces wide-enlarged: - Nature presently distill'd - Helen's cheek, but not her heart, - Cleopatra's majesty, - Atalanta's better part, - Sad Lucretia's modesty. - Thus Rosalind of many parts - By heavenly synod was devised, - Of many faces, eyes and hearts, - To have the touches dearest prized. - Heaven would that she these gifts should have, - And I to live and die her slave. - -ROSALIND O most gentle pulpiter! what tedious homily of love - have you wearied your parishioners withal, and never - cried 'Have patience, good people!' - -CELIA How now! back, friends! Shepherd, go off a little. - Go with him, sirrah. - -TOUCHSTONE Come, shepherd, let us make an honourable retreat; - though not with bag and baggage, yet with scrip and scrippage. - - [Exeunt CORIN and TOUCHSTONE] - -CELIA Didst thou hear these verses? - -ROSALIND O, yes, I heard them all, and more too; for some of - them had in them more feet than the verses would bear. - -CELIA That's no matter: the feet might bear the verses. - -ROSALIND Ay, but the feet were lame and could not bear - themselves without the verse and therefore stood - lamely in the verse. - -CELIA But didst thou hear without wondering how thy name - should be hanged and carved upon these trees? - -ROSALIND I was seven of the nine days out of the wonder - before you came; for look here what I found on a - palm-tree. I was never so be-rhymed since - Pythagoras' time, that I was an Irish rat, which I - can hardly remember. - -CELIA Trow you who hath done this? - -ROSALIND Is it a man? - -CELIA And a chain, that you once wore, about his neck. - Change you colour? - -ROSALIND I prithee, who? - -CELIA O Lord, Lord! it is a hard matter for friends to - meet; but mountains may be removed with earthquakes - and so encounter. - -ROSALIND Nay, but who is it? - -CELIA Is it possible? - -ROSALIND Nay, I prithee now with most petitionary vehemence, - tell me who it is. - -CELIA O wonderful, wonderful, and most wonderful - wonderful! and yet again wonderful, and after that, - out of all hooping! - -ROSALIND Good my complexion! dost thou think, though I am - caparisoned like a man, I have a doublet and hose in - my disposition? One inch of delay more is a - South-sea of discovery; I prithee, tell me who is it - quickly, and speak apace. I would thou couldst - stammer, that thou mightst pour this concealed man - out of thy mouth, as wine comes out of a narrow- - mouthed bottle, either too much at once, or none at - all. I prithee, take the cork out of thy mouth that - may drink thy tidings. - -CELIA So you may put a man in your belly. - -ROSALIND Is he of God's making? What manner of man? Is his - head worth a hat, or his chin worth a beard? - -CELIA Nay, he hath but a little beard. - -ROSALIND Why, God will send more, if the man will be - thankful: let me stay the growth of his beard, if - thou delay me not the knowledge of his chin. - -CELIA It is young Orlando, that tripped up the wrestler's - heels and your heart both in an instant. - -ROSALIND Nay, but the devil take mocking: speak, sad brow and - true maid. - -CELIA I' faith, coz, 'tis he. - -ROSALIND Orlando? - -CELIA Orlando. - -ROSALIND Alas the day! what shall I do with my doublet and - hose? What did he when thou sawest him? What said - he? How looked he? Wherein went he? What makes - him here? Did he ask for me? Where remains he? - How parted he with thee? and when shalt thou see - him again? Answer me in one word. - -CELIA You must borrow me Gargantua's mouth first: 'tis a - word too great for any mouth of this age's size. To - say ay and no to these particulars is more than to - answer in a catechism. - -ROSALIND But doth he know that I am in this forest and in - man's apparel? Looks he as freshly as he did the - day he wrestled? - -CELIA It is as easy to count atomies as to resolve the - propositions of a lover; but take a taste of my - finding him, and relish it with good observance. - I found him under a tree, like a dropped acorn. - -ROSALIND It may well be called Jove's tree, when it drops - forth such fruit. - -CELIA Give me audience, good madam. - -ROSALIND Proceed. - -CELIA There lay he, stretched along, like a wounded knight. - -ROSALIND Though it be pity to see such a sight, it well - becomes the ground. - -CELIA Cry 'holla' to thy tongue, I prithee; it curvets - unseasonably. He was furnished like a hunter. - -ROSALIND O, ominous! he comes to kill my heart. - -CELIA I would sing my song without a burden: thou bringest - me out of tune. - -ROSALIND Do you not know I am a woman? when I think, I must - speak. Sweet, say on. - -CELIA You bring me out. Soft! comes he not here? - - [Enter ORLANDO and JAQUES] - -ROSALIND 'Tis he: slink by, and note him. - -JAQUES I thank you for your company; but, good faith, I had - as lief have been myself alone. - -ORLANDO And so had I; but yet, for fashion sake, I thank you - too for your society. - -JAQUES God be wi' you: let's meet as little as we can. - -ORLANDO I do desire we may be better strangers. - -JAQUES I pray you, mar no more trees with writing - love-songs in their barks. - -ORLANDO I pray you, mar no more of my verses with reading - them ill-favouredly. - -JAQUES Rosalind is your love's name? - -ORLANDO Yes, just. - -JAQUES I do not like her name. - -ORLANDO There was no thought of pleasing you when she was - christened. - -JAQUES What stature is she of? - -ORLANDO Just as high as my heart. - -JAQUES You are full of pretty answers. Have you not been - acquainted with goldsmiths' wives, and conned them - out of rings? - -ORLANDO Not so; but I answer you right painted cloth, from - whence you have studied your questions. - -JAQUES You have a nimble wit: I think 'twas made of - Atalanta's heels. Will you sit down with me? and - we two will rail against our mistress the world and - all our misery. - -ORLANDO I will chide no breather in the world but myself, - against whom I know most faults. - -JAQUES The worst fault you have is to be in love. - -ORLANDO 'Tis a fault I will not change for your best virtue. - I am weary of you. - -JAQUES By my troth, I was seeking for a fool when I found - you. - -ORLANDO He is drowned in the brook: look but in, and you - shall see him. - -JAQUES There I shall see mine own figure. - -ORLANDO Which I take to be either a fool or a cipher. - -JAQUES I'll tarry no longer with you: farewell, good - Signior Love. - -ORLANDO I am glad of your departure: adieu, good Monsieur - Melancholy. - - [Exit JAQUES] - -ROSALIND [Aside to CELIA] I will speak to him, like a saucy - lackey and under that habit play the knave with him. - Do you hear, forester? - -ORLANDO Very well: what would you? - -ROSALIND I pray you, what is't o'clock? - -ORLANDO You should ask me what time o' day: there's no clock - in the forest. - -ROSALIND Then there is no true lover in the forest; else - sighing every minute and groaning every hour would - detect the lazy foot of Time as well as a clock. - -ORLANDO And why not the swift foot of Time? had not that - been as proper? - -ROSALIND By no means, sir: Time travels in divers paces with - divers persons. I'll tell you who Time ambles - withal, who Time trots withal, who Time gallops - withal and who he stands still withal. - -ORLANDO I prithee, who doth he trot withal? - -ROSALIND Marry, he trots hard with a young maid between the - contract of her marriage and the day it is - solemnized: if the interim be but a se'nnight, - Time's pace is so hard that it seems the length of - seven year. - -ORLANDO Who ambles Time withal? - -ROSALIND With a priest that lacks Latin and a rich man that - hath not the gout, for the one sleeps easily because - he cannot study, and the other lives merrily because - he feels no pain, the one lacking the burden of lean - and wasteful learning, the other knowing no burden - of heavy tedious penury; these Time ambles withal. - -ORLANDO Who doth he gallop withal? - -ROSALIND With a thief to the gallows, for though he go as - softly as foot can fall, he thinks himself too soon there. - -ORLANDO Who stays it still withal? - -ROSALIND With lawyers in the vacation, for they sleep between - term and term and then they perceive not how Time moves. - -ORLANDO Where dwell you, pretty youth? - -ROSALIND With this shepherdess, my sister; here in the - skirts of the forest, like fringe upon a petticoat. - -ORLANDO Are you native of this place? - -ROSALIND As the cony that you see dwell where she is kindled. - -ORLANDO Your accent is something finer than you could - purchase in so removed a dwelling. - -ROSALIND I have been told so of many: but indeed an old - religious uncle of mine taught me to speak, who was - in his youth an inland man; one that knew courtship - too well, for there he fell in love. I have heard - him read many lectures against it, and I thank God - I am not a woman, to be touched with so many - giddy offences as he hath generally taxed their - whole sex withal. - -ORLANDO Can you remember any of the principal evils that he - laid to the charge of women? - -ROSALIND There were none principal; they were all like one - another as half-pence are, every one fault seeming - monstrous till his fellow fault came to match it. - -ORLANDO I prithee, recount some of them. - -ROSALIND No, I will not cast away my physic but on those that - are sick. There is a man haunts the forest, that - abuses our young plants with carving 'Rosalind' on - their barks; hangs odes upon hawthorns and elegies - on brambles, all, forsooth, deifying the name of - Rosalind: if I could meet that fancy-monger I would - give him some good counsel, for he seems to have the - quotidian of love upon him. - -ORLANDO I am he that is so love-shaked: I pray you tell me - your remedy. - -ROSALIND There is none of my uncle's marks upon you: he - taught me how to know a man in love; in which cage - of rushes I am sure you are not prisoner. - -ORLANDO What were his marks? - -ROSALIND A lean cheek, which you have not, a blue eye and - sunken, which you have not, an unquestionable - spirit, which you have not, a beard neglected, - which you have not; but I pardon you for that, for - simply your having in beard is a younger brother's - revenue: then your hose should be ungartered, your - bonnet unbanded, your sleeve unbuttoned, your shoe - untied and every thing about you demonstrating a - careless desolation; but you are no such man; you - are rather point-device in your accoutrements as - loving yourself than seeming the lover of any other. - -ORLANDO Fair youth, I would I could make thee believe I love. - -ROSALIND Me believe it! you may as soon make her that you - love believe it; which, I warrant, she is apter to - do than to confess she does: that is one of the - points in the which women still give the lie to - their consciences. But, in good sooth, are you he - that hangs the verses on the trees, wherein Rosalind - is so admired? - -ORLANDO I swear to thee, youth, by the white hand of - Rosalind, I am that he, that unfortunate he. - -ROSALIND But are you so much in love as your rhymes speak? - -ORLANDO Neither rhyme nor reason can express how much. - -ROSALIND Love is merely a madness, and, I tell you, deserves - as well a dark house and a whip as madmen do: and - the reason why they are not so punished and cured - is, that the lunacy is so ordinary that the whippers - are in love too. Yet I profess curing it by counsel. - -ORLANDO Did you ever cure any so? - -ROSALIND Yes, one, and in this manner. He was to imagine me - his love, his mistress; and I set him every day to - woo me: at which time would I, being but a moonish - youth, grieve, be effeminate, changeable, longing - and liking, proud, fantastical, apish, shallow, - inconstant, full of tears, full of smiles, for every - passion something and for no passion truly any - thing, as boys and women are for the most part - cattle of this colour; would now like him, now loathe - him; then entertain him, then forswear him; now weep - for him, then spit at him; that I drave my suitor - from his mad humour of love to a living humour of - madness; which was, to forswear the full stream of - the world, and to live in a nook merely monastic. - And thus I cured him; and this way will I take upon - me to wash your liver as clean as a sound sheep's - heart, that there shall not be one spot of love in't. - -ORLANDO I would not be cured, youth. - -ROSALIND I would cure you, if you would but call me Rosalind - and come every day to my cote and woo me. - -ORLANDO Now, by the faith of my love, I will: tell me - where it is. - -ROSALIND Go with me to it and I'll show it you and by the way - you shall tell me where in the forest you live. - Will you go? - -ORLANDO With all my heart, good youth. - -ROSALIND Nay you must call me Rosalind. Come, sister, will you go? - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT III - - - -SCENE III The forest. - - - [Enter TOUCHSTONE and AUDREY; JAQUES behind] - -TOUCHSTONE Come apace, good Audrey: I will fetch up your - goats, Audrey. And how, Audrey? am I the man yet? - doth my simple feature content you? - -AUDREY Your features! Lord warrant us! what features! - -TOUCHSTONE I am here with thee and thy goats, as the most - capricious poet, honest Ovid, was among the Goths. - -JAQUES [Aside] O knowledge ill-inhabited, worse than Jove - in a thatched house! - -TOUCHSTONE When a man's verses cannot be understood, nor a - man's good wit seconded with the forward child - Understanding, it strikes a man more dead than a - great reckoning in a little room. Truly, I would - the gods had made thee poetical. - -AUDREY I do not know what 'poetical' is: is it honest in - deed and word? is it a true thing? - -TOUCHSTONE No, truly; for the truest poetry is the most - feigning; and lovers are given to poetry, and what - they swear in poetry may be said as lovers they do feign. - -AUDREY Do you wish then that the gods had made me poetical? - -TOUCHSTONE I do, truly; for thou swearest to me thou art - honest: now, if thou wert a poet, I might have some - hope thou didst feign. - -AUDREY Would you not have me honest? - -TOUCHSTONE No, truly, unless thou wert hard-favoured; for - honesty coupled to beauty is to have honey a sauce to sugar. - -JAQUES [Aside] A material fool! - -AUDREY Well, I am not fair; and therefore I pray the gods - make me honest. - -TOUCHSTONE Truly, and to cast away honesty upon a foul slut - were to put good meat into an unclean dish. - -AUDREY I am not a slut, though I thank the gods I am foul. - -TOUCHSTONE Well, praised be the gods for thy foulness! - sluttishness may come hereafter. But be it as it may - be, I will marry thee, and to that end I have been - with Sir Oliver Martext, the vicar of the next - village, who hath promised to meet me in this place - of the forest and to couple us. - -JAQUES [Aside] I would fain see this meeting. - -AUDREY Well, the gods give us joy! - -TOUCHSTONE Amen. A man may, if he were of a fearful heart, - stagger in this attempt; for here we have no temple - but the wood, no assembly but horn-beasts. But what - though? Courage! As horns are odious, they are - necessary. It is said, 'many a man knows no end of - his goods:' right; many a man has good horns, and - knows no end of them. Well, that is the dowry of - his wife; 'tis none of his own getting. Horns? - Even so. Poor men alone? No, no; the noblest deer - hath them as huge as the rascal. Is the single man - therefore blessed? No: as a walled town is more - worthier than a village, so is the forehead of a - married man more honourable than the bare brow of a - bachelor; and by how much defence is better than no - skill, by so much is a horn more precious than to - want. Here comes Sir Oliver. - - [Enter SIR OLIVER MARTEXT] - - Sir Oliver Martext, you are well met: will you - dispatch us here under this tree, or shall we go - with you to your chapel? - -SIR OLIVER MARTEXT Is there none here to give the woman? - -TOUCHSTONE I will not take her on gift of any man. - -SIR OLIVER MARTEXT Truly, she must be given, or the marriage is not lawful. - -JAQUES [Advancing] - - Proceed, proceed I'll give her. - -TOUCHSTONE Good even, good Master What-ye-call't: how do you, - sir? You are very well met: God 'ild you for your - last company: I am very glad to see you: even a - toy in hand here, sir: nay, pray be covered. - -JAQUES Will you be married, motley? - -TOUCHSTONE As the ox hath his bow, sir, the horse his curb and - the falcon her bells, so man hath his desires; and - as pigeons bill, so wedlock would be nibbling. - -JAQUES And will you, being a man of your breeding, be - married under a bush like a beggar? Get you to - church, and have a good priest that can tell you - what marriage is: this fellow will but join you - together as they join wainscot; then one of you will - prove a shrunk panel and, like green timber, warp, warp. - -TOUCHSTONE [Aside] I am not in the mind but I were better to be - married of him than of another: for he is not like - to marry me well; and not being well married, it - will be a good excuse for me hereafter to leave my wife. - -JAQUES Go thou with me, and let me counsel thee. - -TOUCHSTONE 'Come, sweet Audrey: - We must be married, or we must live in bawdry. - Farewell, good Master Oliver: not,-- - O sweet Oliver, - O brave Oliver, - Leave me not behind thee: but,-- - Wind away, - Begone, I say, - I will not to wedding with thee. - - [Exeunt JAQUES, TOUCHSTONE and AUDREY] - -SIR OLIVER MARTEXT 'Tis no matter: ne'er a fantastical knave of them - all shall flout me out of my calling. - - [Exit] - - - - - AS YOU LIKE IT - - -ACT III - - - -SCENE IV The forest. - - - [Enter ROSALIND and CELIA] - -ROSALIND Never talk to me; I will weep. - -CELIA Do, I prithee; but yet have the grace to consider - that tears do not become a man. - -ROSALIND But have I not cause to weep? - -CELIA As good cause as one would desire; therefore weep. - -ROSALIND His very hair is of the dissembling colour. - -CELIA Something browner than Judas's marry, his kisses are - Judas's own children. - -ROSALIND I' faith, his hair is of a good colour. - -CELIA An excellent colour: your chestnut was ever the only colour. - -ROSALIND And his kissing is as full of sanctity as the touch - of holy bread. - -CELIA He hath bought a pair of cast lips of Diana: a nun - of winter's sisterhood kisses not more religiously; - the very ice of chastity is in them. - -ROSALIND But why did he swear he would come this morning, and - comes not? - -CELIA Nay, certainly, there is no truth in him. - -ROSALIND Do you think so? - -CELIA Yes; I think he is not a pick-purse nor a - horse-stealer, but for his verity in love, I do - think him as concave as a covered goblet or a - worm-eaten nut. - -ROSALIND Not true in love? - -CELIA Yes, when he is in; but I think he is not in. - -ROSALIND You have heard him swear downright he was. - -CELIA 'Was' is not 'is:' besides, the oath of a lover is - no stronger than the word of a tapster; they are - both the confirmer of false reckonings. He attends - here in the forest on the duke your father. - -ROSALIND I met the duke yesterday and had much question with - him: he asked me of what parentage I was; I told - him, of as good as he; so he laughed and let me go. - But what talk we of fathers, when there is such a - man as Orlando? - -CELIA O, that's a brave man! he writes brave verses, - speaks brave words, swears brave oaths and breaks - them bravely, quite traverse, athwart the heart of - his lover; as a puisny tilter, that spurs his horse - but on one side, breaks his staff like a noble - goose: but all's brave that youth mounts and folly - guides. Who comes here? - - [Enter CORIN] - -CORIN Mistress and master, you have oft inquired - After the shepherd that complain'd of love, - Who you saw sitting by me on the turf, - Praising the proud disdainful shepherdess - That was his mistress. - -CELIA Well, and what of him? - -CORIN If you will see a pageant truly play'd, - Between the pale complexion of true love - And the red glow of scorn and proud disdain, - Go hence a little and I shall conduct you, - If you will mark it. - -ROSALIND O, come, let us remove: - The sight of lovers feedeth those in love. - Bring us to this sight, and you shall say - I'll prove a busy actor in their play. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT III - - - -SCENE V Another part of the forest. - - - [Enter SILVIUS and PHEBE] - -SILVIUS Sweet Phebe, do not scorn me; do not, Phebe; - Say that you love me not, but say not so - In bitterness. The common executioner, - Whose heart the accustom'd sight of death makes hard, - Falls not the axe upon the humbled neck - But first begs pardon: will you sterner be - Than he that dies and lives by bloody drops? - - [Enter ROSALIND, CELIA, and CORIN, behind] - -PHEBE I would not be thy executioner: - I fly thee, for I would not injure thee. - Thou tell'st me there is murder in mine eye: - 'Tis pretty, sure, and very probable, - That eyes, that are the frail'st and softest things, - Who shut their coward gates on atomies, - Should be call'd tyrants, butchers, murderers! - Now I do frown on thee with all my heart; - And if mine eyes can wound, now let them kill thee: - Now counterfeit to swoon; why now fall down; - Or if thou canst not, O, for shame, for shame, - Lie not, to say mine eyes are murderers! - Now show the wound mine eye hath made in thee: - Scratch thee but with a pin, and there remains - Some scar of it; lean but upon a rush, - The cicatrice and capable impressure - Thy palm some moment keeps; but now mine eyes, - Which I have darted at thee, hurt thee not, - Nor, I am sure, there is no force in eyes - That can do hurt. - -SILVIUS O dear Phebe, - If ever,--as that ever may be near,-- - You meet in some fresh cheek the power of fancy, - Then shall you know the wounds invisible - That love's keen arrows make. - -PHEBE But till that time - Come not thou near me: and when that time comes, - Afflict me with thy mocks, pity me not; - As till that time I shall not pity thee. - -ROSALIND And why, I pray you? Who might be your mother, - That you insult, exult, and all at once, - Over the wretched? What though you have no beauty,-- - As, by my faith, I see no more in you - Than without candle may go dark to bed-- - Must you be therefore proud and pitiless? - Why, what means this? Why do you look on me? - I see no more in you than in the ordinary - Of nature's sale-work. 'Od's my little life, - I think she means to tangle my eyes too! - No, faith, proud mistress, hope not after it: - 'Tis not your inky brows, your black silk hair, - Your bugle eyeballs, nor your cheek of cream, - That can entame my spirits to your worship. - You foolish shepherd, wherefore do you follow her, - Like foggy south puffing with wind and rain? - You are a thousand times a properer man - Than she a woman: 'tis such fools as you - That makes the world full of ill-favour'd children: - 'Tis not her glass, but you, that flatters her; - And out of you she sees herself more proper - Than any of her lineaments can show her. - But, mistress, know yourself: down on your knees, - And thank heaven, fasting, for a good man's love: - For I must tell you friendly in your ear, - Sell when you can: you are not for all markets: - Cry the man mercy; love him; take his offer: - Foul is most foul, being foul to be a scoffer. - So take her to thee, shepherd: fare you well. - -PHEBE Sweet youth, I pray you, chide a year together: - I had rather hear you chide than this man woo. - -ROSALIND He's fallen in love with your foulness and she'll - fall in love with my anger. If it be so, as fast as - she answers thee with frowning looks, I'll sauce her - with bitter words. Why look you so upon me? - -PHEBE For no ill will I bear you. - -ROSALIND I pray you, do not fall in love with me, - For I am falser than vows made in wine: - Besides, I like you not. If you will know my house, - 'Tis at the tuft of olives here hard by. - Will you go, sister? Shepherd, ply her hard. - Come, sister. Shepherdess, look on him better, - And be not proud: though all the world could see, - None could be so abused in sight as he. - Come, to our flock. - - [Exeunt ROSALIND, CELIA and CORIN] - -PHEBE Dead Shepherd, now I find thy saw of might, - 'Who ever loved that loved not at first sight?' - -SILVIUS Sweet Phebe,-- - -PHEBE Ha, what say'st thou, Silvius? - -SILVIUS Sweet Phebe, pity me. - -PHEBE Why, I am sorry for thee, gentle Silvius. - -SILVIUS Wherever sorrow is, relief would be: - If you do sorrow at my grief in love, - By giving love your sorrow and my grief - Were both extermined. - -PHEBE Thou hast my love: is not that neighbourly? - -SILVIUS I would have you. - -PHEBE Why, that were covetousness. - Silvius, the time was that I hated thee, - And yet it is not that I bear thee love; - But since that thou canst talk of love so well, - Thy company, which erst was irksome to me, - I will endure, and I'll employ thee too: - But do not look for further recompense - Than thine own gladness that thou art employ'd. - -SILVIUS So holy and so perfect is my love, - And I in such a poverty of grace, - That I shall think it a most plenteous crop - To glean the broken ears after the man - That the main harvest reaps: loose now and then - A scatter'd smile, and that I'll live upon. - -PHEBE Know'st now the youth that spoke to me erewhile? - -SILVIUS Not very well, but I have met him oft; - And he hath bought the cottage and the bounds - That the old carlot once was master of. - -PHEBE Think not I love him, though I ask for him: - 'Tis but a peevish boy; yet he talks well; - But what care I for words? yet words do well - When he that speaks them pleases those that hear. - It is a pretty youth: not very pretty: - But, sure, he's proud, and yet his pride becomes him: - He'll make a proper man: the best thing in him - Is his complexion; and faster than his tongue - Did make offence his eye did heal it up. - He is not very tall; yet for his years he's tall: - His leg is but so so; and yet 'tis well: - There was a pretty redness in his lip, - A little riper and more lusty red - Than that mix'd in his cheek; 'twas just the difference - Between the constant red and mingled damask. - There be some women, Silvius, had they mark'd him - In parcels as I did, would have gone near - To fall in love with him; but, for my part, - I love him not nor hate him not; and yet - I have more cause to hate him than to love him: - For what had he to do to chide at me? - He said mine eyes were black and my hair black: - And, now I am remember'd, scorn'd at me: - I marvel why I answer'd not again: - But that's all one; omittance is no quittance. - I'll write to him a very taunting letter, - And thou shalt bear it: wilt thou, Silvius? - -SILVIUS Phebe, with all my heart. - -PHEBE I'll write it straight; - The matter's in my head and in my heart: - I will be bitter with him and passing short. - Go with me, Silvius. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT IV - - - -SCENE I The forest. - - - [Enter ROSALIND, CELIA, and JAQUES] - -JAQUES I prithee, pretty youth, let me be better acquainted - with thee. - -ROSALIND They say you are a melancholy fellow. - -JAQUES I am so; I do love it better than laughing. - -ROSALIND Those that are in extremity of either are abominable - fellows and betray themselves to every modern - censure worse than drunkards. - -JAQUES Why, 'tis good to be sad and say nothing. - -ROSALIND Why then, 'tis good to be a post. - -JAQUES I have neither the scholar's melancholy, which is - emulation, nor the musician's, which is fantastical, - nor the courtier's, which is proud, nor the - soldier's, which is ambitious, nor the lawyer's, - which is politic, nor the lady's, which is nice, nor - the lover's, which is all these: but it is a - melancholy of mine own, compounded of many simples, - extracted from many objects, and indeed the sundry's - contemplation of my travels, in which my often - rumination wraps me m a most humorous sadness. - -ROSALIND A traveller! By my faith, you have great reason to - be sad: I fear you have sold your own lands to see - other men's; then, to have seen much and to have - nothing, is to have rich eyes and poor hands. - -JAQUES Yes, I have gained my experience. - -ROSALIND And your experience makes you sad: I had rather have - a fool to make me merry than experience to make me - sad; and to travel for it too! - - [Enter ORLANDO] - -ORLANDO Good day and happiness, dear Rosalind! - -JAQUES Nay, then, God be wi' you, an you talk in blank verse. - - [Exit] - -ROSALIND Farewell, Monsieur Traveller: look you lisp and - wear strange suits, disable all the benefits of your - own country, be out of love with your nativity and - almost chide God for making you that countenance you - are, or I will scarce think you have swam in a - gondola. Why, how now, Orlando! where have you been - all this while? You a lover! An you serve me such - another trick, never come in my sight more. - -ORLANDO My fair Rosalind, I come within an hour of my promise. - -ROSALIND Break an hour's promise in love! He that will - divide a minute into a thousand parts and break but - a part of the thousandth part of a minute in the - affairs of love, it may be said of him that Cupid - hath clapped him o' the shoulder, but I'll warrant - him heart-whole. - -ORLANDO Pardon me, dear Rosalind. - -ROSALIND Nay, an you be so tardy, come no more in my sight: I - had as lief be wooed of a snail. - -ORLANDO Of a snail? - -ROSALIND Ay, of a snail; for though he comes slowly, he - carries his house on his head; a better jointure, - I think, than you make a woman: besides he brings - his destiny with him. - -ORLANDO What's that? - -ROSALIND Why, horns, which such as you are fain to be - beholding to your wives for: but he comes armed in - his fortune and prevents the slander of his wife. - -ORLANDO Virtue is no horn-maker; and my Rosalind is virtuous. - -ROSALIND And I am your Rosalind. - -CELIA It pleases him to call you so; but he hath a - Rosalind of a better leer than you. - -ROSALIND Come, woo me, woo me, for now I am in a holiday - humour and like enough to consent. What would you - say to me now, an I were your very very Rosalind? - -ORLANDO I would kiss before I spoke. - -ROSALIND Nay, you were better speak first, and when you were - gravelled for lack of matter, you might take - occasion to kiss. Very good orators, when they are - out, they will spit; and for lovers lacking--God - warn us!--matter, the cleanliest shift is to kiss. - -ORLANDO How if the kiss be denied? - -ROSALIND Then she puts you to entreaty, and there begins new matter. - -ORLANDO Who could be out, being before his beloved mistress? - -ROSALIND Marry, that should you, if I were your mistress, or - I should think my honesty ranker than my wit. - -ORLANDO What, of my suit? - -ROSALIND Not out of your apparel, and yet out of your suit. - Am not I your Rosalind? - -ORLANDO I take some joy to say you are, because I would be - talking of her. - -ROSALIND Well in her person I say I will not have you. - -ORLANDO Then in mine own person I die. - -ROSALIND No, faith, die by attorney. The poor world is - almost six thousand years old, and in all this time - there was not any man died in his own person, - videlicit, in a love-cause. Troilus had his brains - dashed out with a Grecian club; yet he did what he - could to die before, and he is one of the patterns - of love. Leander, he would have lived many a fair - year, though Hero had turned nun, if it had not been - for a hot midsummer night; for, good youth, he went - but forth to wash him in the Hellespont and being - taken with the cramp was drowned and the foolish - coroners of that age found it was 'Hero of Sestos.' - But these are all lies: men have died from time to - time and worms have eaten them, but not for love. - -ORLANDO I would not have my right Rosalind of this mind, - for, I protest, her frown might kill me. - -ROSALIND By this hand, it will not kill a fly. But come, now - I will be your Rosalind in a more coming-on - disposition, and ask me what you will. I will grant - it. - -ORLANDO Then love me, Rosalind. - -ROSALIND Yes, faith, will I, Fridays and Saturdays and all. - -ORLANDO And wilt thou have me? - -ROSALIND Ay, and twenty such. - -ORLANDO What sayest thou? - -ROSALIND Are you not good? - -ORLANDO I hope so. - -ROSALIND Why then, can one desire too much of a good thing? - Come, sister, you shall be the priest and marry us. - Give me your hand, Orlando. What do you say, sister? - -ORLANDO Pray thee, marry us. - -CELIA I cannot say the words. - -ROSALIND You must begin, 'Will you, Orlando--' - -CELIA Go to. Will you, Orlando, have to wife this Rosalind? - -ORLANDO I will. - -ROSALIND Ay, but when? - -ORLANDO Why now; as fast as she can marry us. - -ROSALIND Then you must say 'I take thee, Rosalind, for wife.' - -ORLANDO I take thee, Rosalind, for wife. - -ROSALIND I might ask you for your commission; but I do take - thee, Orlando, for my husband: there's a girl goes - before the priest; and certainly a woman's thought - runs before her actions. - -ORLANDO So do all thoughts; they are winged. - -ROSALIND Now tell me how long you would have her after you - have possessed her. - -ORLANDO For ever and a day. - -ROSALIND Say 'a day,' without the 'ever.' No, no, Orlando; - men are April when they woo, December when they wed: - maids are May when they are maids, but the sky - changes when they are wives. I will be more jealous - of thee than a Barbary cock-pigeon over his hen, - more clamorous than a parrot against rain, more - new-fangled than an ape, more giddy in my desires - than a monkey: I will weep for nothing, like Diana - in the fountain, and I will do that when you are - disposed to be merry; I will laugh like a hyen, and - that when thou art inclined to sleep. - -ORLANDO But will my Rosalind do so? - -ROSALIND By my life, she will do as I do. - -ORLANDO O, but she is wise. - -ROSALIND Or else she could not have the wit to do this: the - wiser, the waywarder: make the doors upon a woman's - wit and it will out at the casement; shut that and - 'twill out at the key-hole; stop that, 'twill fly - with the smoke out at the chimney. - -ORLANDO A man that had a wife with such a wit, he might say - 'Wit, whither wilt?' - -ROSALIND Nay, you might keep that cheque for it till you met - your wife's wit going to your neighbour's bed. - -ORLANDO And what wit could wit have to excuse that? - -ROSALIND Marry, to say she came to seek you there. You shall - never take her without her answer, unless you take - her without her tongue. O, that woman that cannot - make her fault her husband's occasion, let her - never nurse her child herself, for she will breed - it like a fool! - -ORLANDO For these two hours, Rosalind, I will leave thee. - -ROSALIND Alas! dear love, I cannot lack thee two hours. - -ORLANDO I must attend the duke at dinner: by two o'clock I - will be with thee again. - -ROSALIND Ay, go your ways, go your ways; I knew what you - would prove: my friends told me as much, and I - thought no less: that flattering tongue of yours - won me: 'tis but one cast away, and so, come, - death! Two o'clock is your hour? - -ORLANDO Ay, sweet Rosalind. - -ROSALIND By my troth, and in good earnest, and so God mend - me, and by all pretty oaths that are not dangerous, - if you break one jot of your promise or come one - minute behind your hour, I will think you the most - pathetical break-promise and the most hollow lover - and the most unworthy of her you call Rosalind that - may be chosen out of the gross band of the - unfaithful: therefore beware my censure and keep - your promise. - -ORLANDO With no less religion than if thou wert indeed my - Rosalind: so adieu. - -ROSALIND Well, Time is the old justice that examines all such - offenders, and let Time try: adieu. - - [Exit ORLANDO] - -CELIA You have simply misused our sex in your love-prate: - we must have your doublet and hose plucked over your - head, and show the world what the bird hath done to - her own nest. - -ROSALIND O coz, coz, coz, my pretty little coz, that thou - didst know how many fathom deep I am in love! But - it cannot be sounded: my affection hath an unknown - bottom, like the bay of Portugal. - -CELIA Or rather, bottomless, that as fast as you pour - affection in, it runs out. - -ROSALIND No, that same wicked bastard of Venus that was begot - of thought, conceived of spleen and born of madness, - that blind rascally boy that abuses every one's eyes - because his own are out, let him be judge how deep I - am in love. I'll tell thee, Aliena, I cannot be out - of the sight of Orlando: I'll go find a shadow and - sigh till he come. - -CELIA And I'll sleep. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT IV - - - -SCENE II The forest. - - - [Enter JAQUES, Lords, and Foresters] - -JAQUES Which is he that killed the deer? - -A Lord Sir, it was I. - -JAQUES Let's present him to the duke, like a Roman - conqueror; and it would do well to set the deer's - horns upon his head, for a branch of victory. Have - you no song, forester, for this purpose? - -Forester Yes, sir. - -JAQUES Sing it: 'tis no matter how it be in tune, so it - make noise enough. - - SONG. -Forester What shall he have that kill'd the deer? - His leather skin and horns to wear. - Then sing him home; - - [The rest shall bear this burden] - - Take thou no scorn to wear the horn; - It was a crest ere thou wast born: - Thy father's father wore it, - And thy father bore it: - The horn, the horn, the lusty horn - Is not a thing to laugh to scorn. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT IV - - - -SCENE III The forest. - - - [Enter ROSALIND and CELIA] - -ROSALIND How say you now? Is it not past two o'clock? and - here much Orlando! - -CELIA I warrant you, with pure love and troubled brain, he - hath ta'en his bow and arrows and is gone forth to - sleep. Look, who comes here. - - [Enter SILVIUS] - -SILVIUS My errand is to you, fair youth; - My gentle Phebe bid me give you this: - I know not the contents; but, as I guess - By the stern brow and waspish action - Which she did use as she was writing of it, - It bears an angry tenor: pardon me: - I am but as a guiltless messenger. - -ROSALIND Patience herself would startle at this letter - And play the swaggerer; bear this, bear all: - She says I am not fair, that I lack manners; - She calls me proud, and that she could not love me, - Were man as rare as phoenix. 'Od's my will! - Her love is not the hare that I do hunt: - Why writes she so to me? Well, shepherd, well, - This is a letter of your own device. - -SILVIUS No, I protest, I know not the contents: - Phebe did write it. - -ROSALIND Come, come, you are a fool - And turn'd into the extremity of love. - I saw her hand: she has a leathern hand. - A freestone-colour'd hand; I verily did think - That her old gloves were on, but 'twas her hands: - She has a huswife's hand; but that's no matter: - I say she never did invent this letter; - This is a man's invention and his hand. - -SILVIUS Sure, it is hers. - -ROSALIND Why, 'tis a boisterous and a cruel style. - A style for-challengers; why, she defies me, - Like Turk to Christian: women's gentle brain - Could not drop forth such giant-rude invention - Such Ethiope words, blacker in their effect - Than in their countenance. Will you hear the letter? - -SILVIUS So please you, for I never heard it yet; - Yet heard too much of Phebe's cruelty. - -ROSALIND She Phebes me: mark how the tyrant writes. - - [Reads] - - Art thou god to shepherd turn'd, - That a maiden's heart hath burn'd? - Can a woman rail thus? - -SILVIUS Call you this railing? - -ROSALIND [Reads] - - Why, thy godhead laid apart, - Warr'st thou with a woman's heart? - Did you ever hear such railing? - Whiles the eye of man did woo me, - That could do no vengeance to me. - Meaning me a beast. - If the scorn of your bright eyne - Have power to raise such love in mine, - Alack, in me what strange effect - Would they work in mild aspect! - Whiles you chid me, I did love; - How then might your prayers move! - He that brings this love to thee - Little knows this love in me: - And by him seal up thy mind; - Whether that thy youth and kind - Will the faithful offer take - Of me and all that I can make; - Or else by him my love deny, - And then I'll study how to die. - -SILVIUS Call you this chiding? - -CELIA Alas, poor shepherd! - -ROSALIND Do you pity him? no, he deserves no pity. Wilt - thou love such a woman? What, to make thee an - instrument and play false strains upon thee! not to - be endured! Well, go your way to her, for I see - love hath made thee a tame snake, and say this to - her: that if she love me, I charge her to love - thee; if she will not, I will never have her unless - thou entreat for her. If you be a true lover, - hence, and not a word; for here comes more company. - - [Exit SILVIUS] - - [Enter OLIVER] - -OLIVER Good morrow, fair ones: pray you, if you know, - Where in the purlieus of this forest stands - A sheep-cote fenced about with olive trees? - -CELIA West of this place, down in the neighbour bottom: - The rank of osiers by the murmuring stream - Left on your right hand brings you to the place. - But at this hour the house doth keep itself; - There's none within. - -OLIVER If that an eye may profit by a tongue, - Then should I know you by description; - Such garments and such years: 'The boy is fair, - Of female favour, and bestows himself - Like a ripe sister: the woman low - And browner than her brother.' Are not you - The owner of the house I did inquire for? - -CELIA It is no boast, being ask'd, to say we are. - -OLIVER Orlando doth commend him to you both, - And to that youth he calls his Rosalind - He sends this bloody napkin. Are you he? - -ROSALIND I am: what must we understand by this? - -OLIVER Some of my shame; if you will know of me - What man I am, and how, and why, and where - This handkercher was stain'd. - -CELIA I pray you, tell it. - -OLIVER When last the young Orlando parted from you - He left a promise to return again - Within an hour, and pacing through the forest, - Chewing the food of sweet and bitter fancy, - Lo, what befell! he threw his eye aside, - And mark what object did present itself: - Under an oak, whose boughs were moss'd with age - And high top bald with dry antiquity, - A wretched ragged man, o'ergrown with hair, - Lay sleeping on his back: about his neck - A green and gilded snake had wreathed itself, - Who with her head nimble in threats approach'd - The opening of his mouth; but suddenly, - Seeing Orlando, it unlink'd itself, - And with indented glides did slip away - Into a bush: under which bush's shade - A lioness, with udders all drawn dry, - Lay couching, head on ground, with catlike watch, - When that the sleeping man should stir; for 'tis - The royal disposition of that beast - To prey on nothing that doth seem as dead: - This seen, Orlando did approach the man - And found it was his brother, his elder brother. - -CELIA O, I have heard him speak of that same brother; - And he did render him the most unnatural - That lived amongst men. - -OLIVER And well he might so do, - For well I know he was unnatural. - -ROSALIND But, to Orlando: did he leave him there, - Food to the suck'd and hungry lioness? - -OLIVER Twice did he turn his back and purposed so; - But kindness, nobler ever than revenge, - And nature, stronger than his just occasion, - Made him give battle to the lioness, - Who quickly fell before him: in which hurtling - From miserable slumber I awaked. - -CELIA Are you his brother? - -ROSALIND Wast you he rescued? - -CELIA Was't you that did so oft contrive to kill him? - -OLIVER 'Twas I; but 'tis not I I do not shame - To tell you what I was, since my conversion - So sweetly tastes, being the thing I am. - -ROSALIND But, for the bloody napkin? - -OLIVER By and by. - When from the first to last betwixt us two - Tears our recountments had most kindly bathed, - As how I came into that desert place:-- - In brief, he led me to the gentle duke, - Who gave me fresh array and entertainment, - Committing me unto my brother's love; - Who led me instantly unto his cave, - There stripp'd himself, and here upon his arm - The lioness had torn some flesh away, - Which all this while had bled; and now he fainted - And cried, in fainting, upon Rosalind. - Brief, I recover'd him, bound up his wound; - And, after some small space, being strong at heart, - He sent me hither, stranger as I am, - To tell this story, that you might excuse - His broken promise, and to give this napkin - Dyed in his blood unto the shepherd youth - That he in sport doth call his Rosalind. - - [ROSALIND swoons] - -CELIA Why, how now, Ganymede! sweet Ganymede! - -OLIVER Many will swoon when they do look on blood. - -CELIA There is more in it. Cousin Ganymede! - -OLIVER Look, he recovers. - -ROSALIND I would I were at home. - -CELIA We'll lead you thither. - I pray you, will you take him by the arm? - -OLIVER Be of good cheer, youth: you a man! you lack a - man's heart. - -ROSALIND I do so, I confess it. Ah, sirrah, a body would - think this was well counterfeited! I pray you, tell - your brother how well I counterfeited. Heigh-ho! - -OLIVER This was not counterfeit: there is too great - testimony in your complexion that it was a passion - of earnest. - -ROSALIND Counterfeit, I assure you. - -OLIVER Well then, take a good heart and counterfeit to be a man. - -ROSALIND So I do: but, i' faith, I should have been a woman by right. - -CELIA Come, you look paler and paler: pray you, draw - homewards. Good sir, go with us. - -OLIVER That will I, for I must bear answer back - How you excuse my brother, Rosalind. - -ROSALIND I shall devise something: but, I pray you, commend - my counterfeiting to him. Will you go? - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT V - - - -SCENE I The forest. - - - [Enter TOUCHSTONE and AUDREY] - -TOUCHSTONE We shall find a time, Audrey; patience, gentle Audrey. - -AUDREY Faith, the priest was good enough, for all the old - gentleman's saying. - -TOUCHSTONE A most wicked Sir Oliver, Audrey, a most vile - Martext. But, Audrey, there is a youth here in the - forest lays claim to you. - -AUDREY Ay, I know who 'tis; he hath no interest in me in - the world: here comes the man you mean. - -TOUCHSTONE It is meat and drink to me to see a clown: by my - troth, we that have good wits have much to answer - for; we shall be flouting; we cannot hold. - - [Enter WILLIAM] - -WILLIAM Good even, Audrey. - -AUDREY God ye good even, William. - -WILLIAM And good even to you, sir. - -TOUCHSTONE Good even, gentle friend. Cover thy head, cover thy - head; nay, prithee, be covered. How old are you, friend? - -WILLIAM Five and twenty, sir. - -TOUCHSTONE A ripe age. Is thy name William? - -WILLIAM William, sir. - -TOUCHSTONE A fair name. Wast born i' the forest here? - -WILLIAM Ay, sir, I thank God. - -TOUCHSTONE 'Thank God;' a good answer. Art rich? - -WILLIAM Faith, sir, so so. - -TOUCHSTONE 'So so' is good, very good, very excellent good; and - yet it is not; it is but so so. Art thou wise? - -WILLIAM Ay, sir, I have a pretty wit. - -TOUCHSTONE Why, thou sayest well. I do now remember a saying, - 'The fool doth think he is wise, but the wise man - knows himself to be a fool.' The heathen - philosopher, when he had a desire to eat a grape, - would open his lips when he put it into his mouth; - meaning thereby that grapes were made to eat and - lips to open. You do love this maid? - -WILLIAM I do, sir. - -TOUCHSTONE Give me your hand. Art thou learned? - -WILLIAM No, sir. - -TOUCHSTONE Then learn this of me: to have, is to have; for it - is a figure in rhetoric that drink, being poured out - of a cup into a glass, by filling the one doth empty - the other; for all your writers do consent that ipse - is he: now, you are not ipse, for I am he. - -WILLIAM Which he, sir? - -TOUCHSTONE He, sir, that must marry this woman. Therefore, you - clown, abandon,--which is in the vulgar leave,--the - society,--which in the boorish is company,--of this - female,--which in the common is woman; which - together is, abandon the society of this female, or, - clown, thou perishest; or, to thy better - understanding, diest; or, to wit I kill thee, make - thee away, translate thy life into death, thy - liberty into bondage: I will deal in poison with - thee, or in bastinado, or in steel; I will bandy - with thee in faction; I will o'errun thee with - policy; I will kill thee a hundred and fifty ways: - therefore tremble and depart. - -AUDREY Do, good William. - -WILLIAM God rest you merry, sir. - - [Exit] - - [Enter CORIN] - -CORIN Our master and mistress seeks you; come, away, away! - -TOUCHSTONE Trip, Audrey! trip, Audrey! I attend, I attend. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT V - - - -SCENE II The forest. - - - [Enter ORLANDO and OLIVER] - -ORLANDO Is't possible that on so little acquaintance you - should like her? that but seeing you should love - her? and loving woo? and, wooing, she should - grant? and will you persever to enjoy her? - -OLIVER Neither call the giddiness of it in question, the - poverty of her, the small acquaintance, my sudden - wooing, nor her sudden consenting; but say with me, - I love Aliena; say with her that she loves me; - consent with both that we may enjoy each other: it - shall be to your good; for my father's house and all - the revenue that was old Sir Rowland's will I - estate upon you, and here live and die a shepherd. - -ORLANDO You have my consent. Let your wedding be to-morrow: - thither will I invite the duke and all's contented - followers. Go you and prepare Aliena; for look - you, here comes my Rosalind. - - [Enter ROSALIND] - -ROSALIND God save you, brother. - -OLIVER And you, fair sister. - - [Exit] - -ROSALIND O, my dear Orlando, how it grieves me to see thee - wear thy heart in a scarf! - -ORLANDO It is my arm. - -ROSALIND I thought thy heart had been wounded with the claws - of a lion. - -ORLANDO Wounded it is, but with the eyes of a lady. - -ROSALIND Did your brother tell you how I counterfeited to - swoon when he showed me your handkerchief? - -ORLANDO Ay, and greater wonders than that. - -ROSALIND O, I know where you are: nay, 'tis true: there was - never any thing so sudden but the fight of two rams - and Caesar's thrasonical brag of 'I came, saw, and - overcame:' for your brother and my sister no sooner - met but they looked, no sooner looked but they - loved, no sooner loved but they sighed, no sooner - sighed but they asked one another the reason, no - sooner knew the reason but they sought the remedy; - and in these degrees have they made a pair of stairs - to marriage which they will climb incontinent, or - else be incontinent before marriage: they are in - the very wrath of love and they will together; clubs - cannot part them. - -ORLANDO They shall be married to-morrow, and I will bid the - duke to the nuptial. But, O, how bitter a thing it - is to look into happiness through another man's - eyes! By so much the more shall I to-morrow be at - the height of heart-heaviness, by how much I shall - think my brother happy in having what he wishes for. - -ROSALIND Why then, to-morrow I cannot serve your turn for Rosalind? - -ORLANDO I can live no longer by thinking. - -ROSALIND I will weary you then no longer with idle talking. - Know of me then, for now I speak to some purpose, - that I know you are a gentleman of good conceit: I - speak not this that you should bear a good opinion - of my knowledge, insomuch I say I know you are; - neither do I labour for a greater esteem than may in - some little measure draw a belief from you, to do - yourself good and not to grace me. Believe then, if - you please, that I can do strange things: I have, - since I was three year old, conversed with a - magician, most profound in his art and yet not - damnable. If you do love Rosalind so near the heart - as your gesture cries it out, when your brother - marries Aliena, shall you marry her: I know into - what straits of fortune she is driven; and it is - not impossible to me, if it appear not inconvenient - to you, to set her before your eyes tomorrow human - as she is and without any danger. - -ORLANDO Speakest thou in sober meanings? - -ROSALIND By my life, I do; which I tender dearly, though I - say I am a magician. Therefore, put you in your - best array: bid your friends; for if you will be - married to-morrow, you shall, and to Rosalind, if you will. - - [Enter SILVIUS and PHEBE] - - Look, here comes a lover of mine and a lover of hers. - -PHEBE Youth, you have done me much ungentleness, - To show the letter that I writ to you. - -ROSALIND I care not if I have: it is my study - To seem despiteful and ungentle to you: - You are there followed by a faithful shepherd; - Look upon him, love him; he worships you. - -PHEBE Good shepherd, tell this youth what 'tis to love. - -SILVIUS It is to be all made of sighs and tears; - And so am I for Phebe. - -PHEBE And I for Ganymede. - -ORLANDO And I for Rosalind. - -ROSALIND And I for no woman. - -SILVIUS It is to be all made of faith and service; - And so am I for Phebe. - -PHEBE And I for Ganymede. - -ORLANDO And I for Rosalind. - -ROSALIND And I for no woman. - -SILVIUS It is to be all made of fantasy, - All made of passion and all made of wishes, - All adoration, duty, and observance, - All humbleness, all patience and impatience, - All purity, all trial, all observance; - And so am I for Phebe. - -PHEBE And so am I for Ganymede. - -ORLANDO And so am I for Rosalind. - -ROSALIND And so am I for no woman. - -PHEBE If this be so, why blame you me to love you? - -SILVIUS If this be so, why blame you me to love you? - -ORLANDO If this be so, why blame you me to love you? - -ROSALIND Who do you speak to, 'Why blame you me to love you?' - -ORLANDO To her that is not here, nor doth not hear. - -ROSALIND Pray you, no more of this; 'tis like the howling - of Irish wolves against the moon. - - [To SILVIUS] - - I will help you, if I can: - - [To PHEBE] - - I would love you, if I could. To-morrow meet me all together. - - [To PHEBE] - - I will marry you, if ever I marry woman, and I'll be - married to-morrow: - - [To ORLANDO] - - I will satisfy you, if ever I satisfied man, and you - shall be married to-morrow: - - [To SILVIUS] - - I will content you, if what pleases you contents - you, and you shall be married to-morrow. - - [To ORLANDO] - - As you love Rosalind, meet: - - [To SILVIUS] - - as you love Phebe, meet: and as I love no woman, - I'll meet. So fare you well: I have left you commands. - -SILVIUS I'll not fail, if I live. - -PHEBE Nor I. - -ORLANDO Nor I. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT V - - - -SCENE III The forest. - - - [Enter TOUCHSTONE and AUDREY] - -TOUCHSTONE To-morrow is the joyful day, Audrey; to-morrow will - we be married. - -AUDREY I do desire it with all my heart; and I hope it is - no dishonest desire to desire to be a woman of the - world. Here comes two of the banished duke's pages. - - [Enter two Pages] - -First Page Well met, honest gentleman. - -TOUCHSTONE By my troth, well met. Come, sit, sit, and a song. - -Second Page We are for you: sit i' the middle. - -First Page Shall we clap into't roundly, without hawking or - spitting or saying we are hoarse, which are the only - prologues to a bad voice? - -Second Page I'faith, i'faith; and both in a tune, like two - gipsies on a horse. - - SONG. - It was a lover and his lass, - With a hey, and a ho, and a hey nonino, - That o'er the green corn-field did pass - In the spring time, the only pretty ring time, - When birds do sing, hey ding a ding, ding: - Sweet lovers love the spring. - - Between the acres of the rye, - With a hey, and a ho, and a hey nonino - These pretty country folks would lie, - In spring time, &c. - - This carol they began that hour, - With a hey, and a ho, and a hey nonino, - How that a life was but a flower - In spring time, &c. - - And therefore take the present time, - With a hey, and a ho, and a hey nonino; - For love is crowned with the prime - In spring time, &c. - -TOUCHSTONE Truly, young gentlemen, though there was no great - matter in the ditty, yet the note was very - untuneable. - -First Page You are deceived, sir: we kept time, we lost not our time. - -TOUCHSTONE By my troth, yes; I count it but time lost to hear - such a foolish song. God be wi' you; and God mend - your voices! Come, Audrey. - - [Exeunt] - - - - - AS YOU LIKE IT - - -ACT V - - - -SCENE IV The forest. - - - [Enter DUKE SENIOR, AMIENS, JAQUES, ORLANDO, OLIVER, - and CELIA] - -DUKE SENIOR Dost thou believe, Orlando, that the boy - Can do all this that he hath promised? - -ORLANDO I sometimes do believe, and sometimes do not; - As those that fear they hope, and know they fear. - - [Enter ROSALIND, SILVIUS, and PHEBE] - -ROSALIND Patience once more, whiles our compact is urged: - You say, if I bring in your Rosalind, - You will bestow her on Orlando here? - -DUKE SENIOR That would I, had I kingdoms to give with her. - -ROSALIND And you say, you will have her, when I bring her? - -ORLANDO That would I, were I of all kingdoms king. - -ROSALIND You say, you'll marry me, if I be willing? - -PHEBE That will I, should I die the hour after. - -ROSALIND But if you do refuse to marry me, - You'll give yourself to this most faithful shepherd? - -PHEBE So is the bargain. - -ROSALIND You say, that you'll have Phebe, if she will? - -SILVIUS Though to have her and death were both one thing. - -ROSALIND I have promised to make all this matter even. - Keep you your word, O duke, to give your daughter; - You yours, Orlando, to receive his daughter: - Keep your word, Phebe, that you'll marry me, - Or else refusing me, to wed this shepherd: - Keep your word, Silvius, that you'll marry her. - If she refuse me: and from hence I go, - To make these doubts all even. - - [Exeunt ROSALIND and CELIA] - -DUKE SENIOR I do remember in this shepherd boy - Some lively touches of my daughter's favour. - -ORLANDO My lord, the first time that I ever saw him - Methought he was a brother to your daughter: - But, my good lord, this boy is forest-born, - And hath been tutor'd in the rudiments - Of many desperate studies by his uncle, - Whom he reports to be a great magician, - Obscured in the circle of this forest. - - [Enter TOUCHSTONE and AUDREY] - -JAQUES There is, sure, another flood toward, and these - couples are coming to the ark. Here comes a pair of - very strange beasts, which in all tongues are called fools. - -TOUCHSTONE Salutation and greeting to you all! - -JAQUES Good my lord, bid him welcome: this is the - motley-minded gentleman that I have so often met in - the forest: he hath been a courtier, he swears. - -TOUCHSTONE If any man doubt that, let him put me to my - purgation. I have trod a measure; I have flattered - a lady; I have been politic with my friend, smooth - with mine enemy; I have undone three tailors; I have - had four quarrels, and like to have fought one. - -JAQUES And how was that ta'en up? - -TOUCHSTONE Faith, we met, and found the quarrel was upon the - seventh cause. - -JAQUES How seventh cause? Good my lord, like this fellow. - -DUKE SENIOR I like him very well. - -TOUCHSTONE God 'ild you, sir; I desire you of the like. I - press in here, sir, amongst the rest of the country - copulatives, to swear and to forswear: according as - marriage binds and blood breaks: a poor virgin, - sir, an ill-favoured thing, sir, but mine own; a poor - humour of mine, sir, to take that that no man else - will: rich honesty dwells like a miser, sir, in a - poor house; as your pearl in your foul oyster. - -DUKE SENIOR By my faith, he is very swift and sententious. - -TOUCHSTONE According to the fool's bolt, sir, and such dulcet diseases. - -JAQUES But, for the seventh cause; how did you find the - quarrel on the seventh cause? - -TOUCHSTONE Upon a lie seven times removed:--bear your body more - seeming, Audrey:--as thus, sir. I did dislike the - cut of a certain courtier's beard: he sent me word, - if I said his beard was not cut well, he was in the - mind it was: this is called the Retort Courteous. - If I sent him word again 'it was not well cut,' he - would send me word, he cut it to please himself: - this is called the Quip Modest. If again 'it was - not well cut,' he disabled my judgment: this is - called the Reply Churlish. If again 'it was not - well cut,' he would answer, I spake not true: this - is called the Reproof Valiant. If again 'it was not - well cut,' he would say I lied: this is called the - Counter-cheque Quarrelsome: and so to the Lie - Circumstantial and the Lie Direct. - -JAQUES And how oft did you say his beard was not well cut? - -TOUCHSTONE I durst go no further than the Lie Circumstantial, - nor he durst not give me the Lie Direct; and so we - measured swords and parted. - -JAQUES Can you nominate in order now the degrees of the lie? - -TOUCHSTONE O sir, we quarrel in print, by the book; as you have - books for good manners: I will name you the degrees. - The first, the Retort Courteous; the second, the - Quip Modest; the third, the Reply Churlish; the - fourth, the Reproof Valiant; the fifth, the - Countercheque Quarrelsome; the sixth, the Lie with - Circumstance; the seventh, the Lie Direct. All - these you may avoid but the Lie Direct; and you may - avoid that too, with an If. I knew when seven - justices could not take up a quarrel, but when the - parties were met themselves, one of them thought but - of an If, as, 'If you said so, then I said so;' and - they shook hands and swore brothers. Your If is the - only peacemaker; much virtue in If. - -JAQUES Is not this a rare fellow, my lord? he's as good at - any thing and yet a fool. - -DUKE SENIOR He uses his folly like a stalking-horse and under - the presentation of that he shoots his wit. - - [Enter HYMEN, ROSALIND, and CELIA] - - [Still Music] - -HYMEN Then is there mirth in heaven, - When earthly things made even - Atone together. - Good duke, receive thy daughter - Hymen from heaven brought her, - Yea, brought her hither, - That thou mightst join her hand with his - Whose heart within his bosom is. - -ROSALIND [To DUKE SENIOR] To you I give myself, for I am yours. - - [To ORLANDO] - - To you I give myself, for I am yours. - -DUKE SENIOR If there be truth in sight, you are my daughter. - -ORLANDO If there be truth in sight, you are my Rosalind. - -PHEBE If sight and shape be true, - Why then, my love adieu! - -ROSALIND I'll have no father, if you be not he: - I'll have no husband, if you be not he: - Nor ne'er wed woman, if you be not she. - -HYMEN Peace, ho! I bar confusion: - 'Tis I must make conclusion - Of these most strange events: - Here's eight that must take hands - To join in Hymen's bands, - If truth holds true contents. - You and you no cross shall part: - You and you are heart in heart - You to his love must accord, - Or have a woman to your lord: - You and you are sure together, - As the winter to foul weather. - Whiles a wedlock-hymn we sing, - Feed yourselves with questioning; - That reason wonder may diminish, - How thus we met, and these things finish. - - SONG. - Wedding is great Juno's crown: - O blessed bond of board and bed! - 'Tis Hymen peoples every town; - High wedlock then be honoured: - Honour, high honour and renown, - To Hymen, god of every town! - -DUKE SENIOR O my dear niece, welcome thou art to me! - Even daughter, welcome, in no less degree. - -PHEBE I will not eat my word, now thou art mine; - Thy faith my fancy to thee doth combine. - - [Enter JAQUES DE BOYS] - -JAQUES DE BOYS Let me have audience for a word or two: - I am the second son of old Sir Rowland, - That bring these tidings to this fair assembly. - Duke Frederick, hearing how that every day - Men of great worth resorted to this forest, - Address'd a mighty power; which were on foot, - In his own conduct, purposely to take - His brother here and put him to the sword: - And to the skirts of this wild wood he came; - Where meeting with an old religious man, - After some question with him, was converted - Both from his enterprise and from the world, - His crown bequeathing to his banish'd brother, - And all their lands restored to them again - That were with him exiled. This to be true, - I do engage my life. - -DUKE SENIOR Welcome, young man; - Thou offer'st fairly to thy brothers' wedding: - To one his lands withheld, and to the other - A land itself at large, a potent dukedom. - First, in this forest, let us do those ends - That here were well begun and well begot: - And after, every of this happy number - That have endured shrewd days and nights with us - Shall share the good of our returned fortune, - According to the measure of their states. - Meantime, forget this new-fall'n dignity - And fall into our rustic revelry. - Play, music! And you, brides and bridegrooms all, - With measure heap'd in joy, to the measures fall. - -JAQUES Sir, by your patience. If I heard you rightly, - The duke hath put on a religious life - And thrown into neglect the pompous court? - -JAQUES DE BOYS He hath. - -JAQUES To him will I : out of these convertites - There is much matter to be heard and learn'd. - - [To DUKE SENIOR] - - You to your former honour I bequeath; - Your patience and your virtue well deserves it: - - [To ORLANDO] - - You to a love that your true faith doth merit: - - [To OLIVER] - - You to your land and love and great allies: - - [To SILVIUS] - - You to a long and well-deserved bed: - - [To TOUCHSTONE] - - And you to wrangling; for thy loving voyage - Is but for two months victuall'd. So, to your pleasures: - I am for other than for dancing measures. - -DUKE SENIOR Stay, Jaques, stay. - -JAQUES To see no pastime I what you would have - I'll stay to know at your abandon'd cave. - - [Exit] - -DUKE SENIOR Proceed, proceed: we will begin these rites, - As we do trust they'll end, in true delights. - - [A dance] - - - - - AS YOU LIKE IT - - EPILOGUE - - -ROSALIND It is not the fashion to see the lady the epilogue; - but it is no more unhandsome than to see the lord - the prologue. If it be true that good wine needs - no bush, 'tis true that a good play needs no - epilogue; yet to good wine they do use good bushes, - and good plays prove the better by the help of good - epilogues. What a case am I in then, that am - neither a good epilogue nor cannot insinuate with - you in the behalf of a good play! I am not - furnished like a beggar, therefore to beg will not - become me: my way is to conjure you; and I'll begin - with the women. I charge you, O women, for the love - you bear to men, to like as much of this play as - please you: and I charge you, O men, for the love - you bear to women--as I perceive by your simpering, - none of you hates them--that between you and the - women the play may please. If I were a woman I - would kiss as many of you as had beards that pleased - me, complexions that liked me and breaths that I - defied not: and, I am sure, as many as have good - beards or good faces or sweet breaths will, for my - kind offer, when I make curtsy, bid me farewell. - - [Exeunt] diff --git a/snappy-1.1.0/testdata/baddata1.snappy b/snappy-1.1.0/testdata/baddata1.snappy deleted file mode 100644 index 99d970f..0000000 Binary files a/snappy-1.1.0/testdata/baddata1.snappy and /dev/null differ diff --git a/snappy-1.1.0/testdata/baddata2.snappy b/snappy-1.1.0/testdata/baddata2.snappy deleted file mode 100644 index 8f5cb13..0000000 Binary files a/snappy-1.1.0/testdata/baddata2.snappy and /dev/null differ diff --git a/snappy-1.1.0/testdata/baddata3.snappy b/snappy-1.1.0/testdata/baddata3.snappy deleted file mode 100644 index 774aead..0000000 Binary files a/snappy-1.1.0/testdata/baddata3.snappy and /dev/null differ diff --git a/snappy-1.1.0/testdata/cp.html b/snappy-1.1.0/testdata/cp.html deleted file mode 100644 index 1d0ca37..0000000 --- a/snappy-1.1.0/testdata/cp.html +++ /dev/null @@ -1,645 +0,0 @@ - -Compression Pointers - - - - - -
-

Compression Pointers

- - - -
- -

-Compression resources, conferences, and some research -groups and companies, are listed towards the end of this page.

- -Use this handy form to add something to this page, or to simply say you liked this page -

- - - - - -

- -

What's New?

- - -Jean-loup Gailly -- Mr. gzip, -PNG, CCR (1996-06-10) - -
- -MPEG Pointers and Resources - -
- -Robert M. Gray -- Signal -compression, VQ, image quality evaluation (1996-04-22) -
- -Compression and -Classification Group -- ISL,EE,Stanford (1996-04-22) -
- -Signal Processing -and the International Information Infrastructure -- Web sites (1996-04-22) -
- -Valenta, Vladimir -- (1996-04-22) -
- - -Jordan, Frederic -- Parallel Image Compression (1996-04-12) -
-Electro-Optical Technologies, Inc. -- Consultant (1996-04-12) -
-quicktime.apple.com -- Quicktime site (1996-03-11) -
-IBM Hardware -- Compression chips (1996-03-11) -
- - - - - - - - - - - - - - - - - - - - - - - - -

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People

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A

- -Adler, Mark -- Info-ZIP; Zip, UnZip, gzip and zlib co-author; PNG group -

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B

- -Baker, Matthew -- Region based video compression -

-Bamberger, Roberto H. -

-Bell, Daniel -- Region based image compression -

-Bell, Tim -- compression, computer science for children, and computers and music. -

-Bellard, Fabrice -- Author of LZEXE -

-Berghorn, Willy -

-Bhaskaran, Vasudev -- Image and Video compression -

-Bloom, Charles -- text compression, LZ methods, PPM methods... -

-Brito, Roger -- Arithmetic Coding, LZW, Text Compression -

-Budge, Scott E. -- medical/lossy image compression -

-Burnett, Ian -- Speech coding, prototype waveform techniques -

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C

- -Chan, Christopher -- universal lossy source coding, adaptive VQ -

-Chao, Hong-yang -- Lightning strike image compressor -

-Chao, Stewart -

-Cherriman, Peter -

-Cheung, S.C. -- Scalable video compression algorithms (18th Feb 1996) -

- -Christopoulos, Charilaos -- Image and Video compression -

-Chrysafis, Christos -

-Chung, Wilson C. -- R-D image and video coding, subband/wavelet, filter banks -

-Clark, Alan -- primary contact for V.42bis. Developed BTLZ variant of LZW -

-Cleary, John -- PPM, PPM*, K* -

-Cohn, Martin -

- -Cormack, Gordon V. -- DMC -

-Cramer, Chris -- neural network image compression -

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D

-Danskin, John -- Protocol compression, document compression (9th Feb 1996) -

-Davis, Geoff -- wavelets, image compression, medical -

-Dilger, Andreas -- fractal block coding of video sequences -

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E

-Estes, Robert -

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F

-Fisher, Yuval -- Fractal Image Compression -

-Ford, Adrian -- Subjective and Objective Compression quality (5th Mar 1996) -

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G

-Jean-loup Gailly -- -Mr. gzip, PNG, CCR (1996-06-10) -

- -Gersho, Allen -- Vector Quantisation, Image Compression -

-Goertzel, Ben -

-Gooch, Mark -- High Performance Hardware Compression (7th Feb 1996) -

-Goyal, Vivek -- overcomplete representations, adaptive transform coding, VQ -

-Robert M. Gray -- Signal -compression, VQ, image quality evaluation -

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H

-Hafner, Ullrich -- WFA image compression -

-Hirschberg, Dan -- algorithm theory, compression -

-Holland, Scott -

-Horspool, R. Nigel -- text compression, ECG compression - -

I

-Inglis, Stuart -- image compression, OCR, lossy/lossless document compression -

- -

J

-Jones, Douglas -- splay-tree based compression and encryption -

-Jones, Simon -- Lossless compression, High Performance Hardware (7th Feb 1996) -

-Jordan, Frederic -- Parallel Image Compression (12th April 1996) -

-Jung, Robert K. -- ARJ -

-jutta -

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K

-Kominek, John -- Fractal and spline based compression -

-Kjelso, Morten -- Main memory compression, High performance hardware -

-Kuhn, Markus -- JBIG implementation -

-Kuo, C.-C. Jay -

-Kuru, Esa -

-Kyfonidis, Theodoros -

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L

-Lamparter, Bernd -

-Langdon, Glen -

-Larsson, Jesper -- algorithms and data structures, text compression -

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M

-Manber, Udi -

-Mangen, Jean-Michel -- image compression, wavelets, satellite -

-Moffat, Alistair -- text and index compression, coding methods, information retrieval, document databases -

-Montgomery, Christopher -- OggSquish, audio compression -

-Mueller, Urban Dominik -- XPK system -

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N

-Neal, Radford -

-Nevill-Manning, Craig -

-Nicholls, Jeremy -

-Noah, Matt -- speech, ATC, ACELP and IMBE -

-Nuri, Veyis -- wavelets, data compression, DSP (speech & image) - -

O

-Oleg -- Lots of code -

-Ortega, Antonio -- Video compression, Packet video, Adaptive quantization -

-Owen, Charles -

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P

-Provine, -Joseph -- Model based coding -

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R

-Robinson, John -- Binary Tree Predictive Coding -

-Roelofs, Greg -- Info-ZIP; primary UnZip author; PNG group -

-Rose, Kenneth -

-Russo, Roberto Maria -- Multiplatform Data Compression -

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S

-Schmidt, Bill -

-Shaw, Sandy C. -

-Sharifi, Kamran -- Video over ATM networks -

-Shende, Sunil M. -

-Silverstein, D. Amnon -

-Smoot, Steve -- MPEG -

-Storer, James A. -

-Streit, Jurgen -- Low bitrate coding -

-Strutz, Tilo -- Wavelet image compressor, demonstration execs -

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T

-Tate, Steve -

-Teahan, Bill -- PPM, PPM*, master of the Calgary Corpus -

-Thomson, Duncan -- ECG compression with ANNs -

-Tilton, James C. -

-Tomczyk, Marek -

-Turpin, Andrew -- Prefix Codes -

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V

-Vetterli, Martin -- wavelets, subband coding, video compression, computational complexity -

-Vitter, Jeff -

-Voukelatos, Stathis -

-de Vries, Nico -- AIP-NL, UltraCompressor II development -

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W

- -Wareham, Paul -- Region-oriented video coding -

-Wegener, Al -- DSP, lossless audio compression and AC-2 -

-Wei, Dong -- Wavelet compression -

-Williams, Ross -

-Witten, Ian -- PPM, mg, arithmetic coding -

-Wolff, Gerry -

-Woo, Woon-Tack -- stereo image and video compression (12th Feb 1996) -

-Wu, Xiaolin -- CALIC -

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Z

-Zobel, Justin -- index compression, database compression -

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Conferences

-Data Compression Conference (DCC), Snowbird, Utah, USA.
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Resources

-
-Where to get answers... -
-
International Telecommunication Union (ITU) -- standards documents (CCITT) -
-
comp.compression -- Frequently Asked Questions -- Come here 1st! -
-JPEG - Frequently Asked Questions -
-MPEG - Frequently Asked Questions -
-Standards - Frequenty Asked Questions -
-usenet newsgroup: comp.compression.research -
-
-Archive Compression Test -- Summary of all archivers -
-
-Fractal compression bibliography -- bibtex file -
-
-LZ/Complexity Seminars -- (in German) -
-
-Comparitive Compression Ratios -- Sofar...B&W, Gray Scale, Text Compression -
-
-VCN (Video, Compression, Networking) -Glossary -
-
-Digital Library -- search for compression -
- - -
-
-Reports/Ph.D. Theses -
-Paul Howards Ph.D. thesis
-
The Design and Analysis of Efficient Lossless Data Compression Systems -
- - - - -
-
-Source code -
-Arithmetic coding routines -
        (from Moffat, Neal and Witten, Proc. DCC, April 1995) -
-
-CACM Arithmetic coding package -
        (Witten, Neal and Cleary, CACM 30:520-541, June 1987) -
-
-JBIG Source code Includes a Q-coder -
-
Markus Kuhn's JBIG implementation -
-
-k-arithmetic coder -
-
-Lossless Data Compression toolkit 1.1 -
-
-Splay Trees Code -- by Douglas W. Jones -
-
Block compression code -- Excellent text compressor -
- - - -
-
-Test Files -
-Test Images -- CCITT images (pbm), Lena etc. (Sun raster) -
-
-Stockholm test images -- You have to buy a CDROM, thats all I know! :-( -
         mail me at singlis@cs.waikato.ac.nz if you know anything about them. -
-
-Calgary Text Compression Corpus (Text Compression, Bell, Cleary and Witten, 1990) -
- - -
- - - - -

Research Projects, Standards & Companies

- -

-

-Research/Free software Groups -
Compression and -Classification Group -- ISL,EE,Stanford (22th April 1996) - -
Voice email -- Lossless audio compression (18th Feb 1996) - - -
Electro-Optical Technologies, Inc. -- Consultant (12th April 1996) - -
quicktime.apple.com -- Quicktime site (11th Mar 1996) - -
IMAGE etc. -- Commercial image compression software (Fractals/Wavelets) (29th Feb 1996) - -
NCAR CCM Compression and Visualisation -- (18th Feb 1996) -
-
SPIHT -- Wavelet Natural Image Compressor (12th Feb 1996) -
-
Real-Time Lossless Compression Systems -- Loughborough University -
-
Web site for Multirate Signal Processing -- University of Wisconsin, Madison -
-
Info-ZIP -- free, -portable Zip and UnZip utilities -
-
CEDIS -- NASA, Maryland, Image/data compression -
-
CIC-3 Image Compression -- FBI Fingerprints -
-
Signal Compression Lab at UCSB -
-
University of -Washington compression lab -- VQ, Wavelets, Shlomo -
- - - -

-

-Snippets -
Signal Processing -and the International Information Infrastructure -- Web sites (22th April 1996) -
Increasing Web bandwith -- comparing GIF, JPEG, Fractal compression -
-
Fractal Links on Yahoo -
-
Digital Speech Compression GSM 06.10 RPE-LTP -- DDJ -
-
CREW -- Continuous tone loss(y/less) wavelet compression -
-
CALIC -- Context-based adaptive lossless image compressor -
-
Berkeley MPEG -- MPEG tools -
-
MPEG Pointers and Resources -
- - - - - - -

-

-Wavelets -
- - EPIC (Efficient Pyramid Image Coder) -- by Eero Simoncelli -
-
-Tucker, Michael -- FASTWAVE, audio/image compression -
-
-HARC -- Lossy Wavelet Compression technology -
-
-UC Berkeley Wavelet Group -
-
-Khoros Wavetlet and Compression Toolbox -
-
-The Wavelet Digest -
-
-Rice DSP Publications Archive -- Wavelets, Time Frequency/Scale -
- - -

-

-Fractals -
-Fractal Image Compression -- Software, Pointers, Conferences -
-
-Fractal Design Corporation -
-
-New Fractal Image Compression program -
- - -

-

-Companies -
IBM Hardware -- Compression chips (11th Mar 1996) - -
Summus Wavelet Technology -- Wavelet image and video compressors (11th Mar 1996) -
Fractal Image Compression -- Mitsubishi (18th Feb 1996) - -
Terran Interactive -- Video compression for the Mac (1st Feb 1996) -
- -
DV Mpeg -- Windows drivers (18th Feb 1996) -
- -
Crawford Compression Services -- MPEG post-production (18th Feb 1996) -
- -
Intelligent Compression Technologies (18th Feb 1996) -
- -
Pegasus Imaging -- Compression software/dev. kits (12th Feb 1996) -
-
Aladdin Systems -- StuffIt compression products -
-
Stac Electronics -
-
DCP Research -- Hardware solutions -
-
Aware Inc. -- Specialised compression company -
-
IVS - INRIA Videoconferencing System -
-
Telvox Teleinformatica -- Multiplatform Data Compressor -
-
Compression Technologies, -Inc -- Canada -
-
Optivision -- MPEG -
-
PKWARE -- Makers of PKZIP -
-
Multimedia Imaging Services -
- - -

-

-Audio compression -
Fraunhofer Institut fr Integrierte Schaltungen -
-
Shorten -
-
digital speech compression -
-
Audio compression references -
-
SpeakFreely - compression -
-
SpeakFreely - Contents -
diff --git a/snappy-1.1.0/testdata/fields.c b/snappy-1.1.0/testdata/fields.c deleted file mode 100644 index 63cdc03..0000000 --- a/snappy-1.1.0/testdata/fields.c +++ /dev/null @@ -1,431 +0,0 @@ -#ifndef lint -static char Rcs_Id[] = - "$Id: fields.c,v 1.7 1994/01/06 05:26:37 geoff Exp $"; -#endif - -/* - * $Log: fields.c,v $ - * Revision 1.7 1994/01/06 05:26:37 geoff - * Get rid of all references to System V string routines, for portability - * (sigh). - * - * Revision 1.6 1994/01/05 20:13:43 geoff - * Add the maxf parameter - * - * Revision 1.5 1994/01/04 02:40:21 geoff - * Make the increments settable (field_line_inc and field_field_inc). - * Add support for the FLD_NOSHRINK flag. - * - * Revision 1.4 1993/09/27 17:48:02 geoff - * Fix some lint complaints and some parenthesization errors. - * - * Revision 1.3 1993/09/09 01:11:11 geoff - * Add a return value to fieldwrite. Add support for backquotes and for - * unstripped backslashes. - * - * Revision 1.2 1993/08/26 00:02:50 geoff - * Fix a stupid null-pointer bug - * - * Revision 1.1 1993/08/25 21:32:05 geoff - * Initial revision - * - */ - -#include -#include "config.h" -#include "fields.h" - -field_t * fieldread P ((FILE * file, char * delims, - int flags, int maxf)); - /* Read a line with fields from a file */ -field_t * fieldmake P ((char * line, int allocated, char * delims, - int flags, int maxf)); - /* Make a field structure from a line */ -static field_t * fieldparse P ((field_t * fieldp, char * line, char * delims, - int flags, int maxf)); - /* Parse the fields in a line */ -static int fieldbackch P ((char * str, char ** out, int strip)); - /* Process backslash sequences */ -int fieldwrite P ((FILE * file, field_t * fieldp, int delim)); - /* Write a line with fields to a file */ -void fieldfree P ((field_t * fieldp)); - /* Free a field returned by fieldread */ - -unsigned int field_field_inc = 20; /* Increment to increase # fields by */ -unsigned int field_line_inc = 512; /* Incr to increase line length by */ - -#ifndef USG -#define strchr index -#endif /* USG */ - -extern void free (); -extern char * malloc (); -extern char * realloc (); -extern char * strchr (); -extern int strlen (); - -/* - * Read one line of the given file into a buffer, break it up into - * fields, and return them to the caller. The field_t structure - * returned must eventually be freed with fieldfree. - */ -field_t * fieldread (file, delims, flags, maxf) - FILE * file; /* File to read lines from */ - char * delims; /* Characters to use for field delimiters */ - int flags; /* Option flags; see fields.h */ - int maxf; /* Maximum number of fields to parse */ - { - register char * linebuf; /* Buffer to hold the line read in */ - int linemax; /* Maximum line buffer size */ - int linesize; /* Current line buffer size */ - - linebuf = (char *) malloc (field_line_inc); - if (linebuf == NULL) - return NULL; - linemax = field_line_inc; - linesize = 0; - /* - * Read in the line. - */ - while (fgets (&linebuf[linesize], linemax - linesize, file) - != NULL) - { - linesize += strlen (&linebuf[linesize]); - if (linebuf[linesize - 1] == '\n') - break; - else - { - linemax += field_line_inc; - linebuf = (char *) realloc (linebuf, linemax); - if (linebuf == NULL) - return NULL; - } - } - if (linesize == 0) - { - free (linebuf); - return NULL; - } - return fieldmake (linebuf, 1, delims, flags, maxf); - } - -field_t * fieldmake (line, allocated, delims, flags, maxf) - char * line; /* Line to make into a field structure */ - int allocated; /* NZ if line allocated with malloc */ - char * delims; /* Characters to use for field delimiters */ - int flags; /* Option flags; see fields.h */ - int maxf; /* Maximum number of fields to parse */ - { - register field_t * fieldp; /* Structure describing the fields */ - int linesize; /* Current line buffer size */ - - fieldp = (field_t *) malloc (sizeof (field_t)); - if (fieldp == NULL) - return NULL; - fieldp->nfields = 0; - fieldp->linebuf = allocated ? line : NULL; - fieldp->fields = NULL; - fieldp->hadnl = 0; - linesize = strlen (line); - if (line[linesize - 1] == '\n') - { - line[--linesize] = '\0'; - fieldp->hadnl = 1; - } - /* - * Shrink the line buffer if necessary. - */ - if (allocated && (flags & FLD_NOSHRINK) == 0) - { - line = fieldp->linebuf = - (char *) realloc (fieldp->linebuf, linesize + 1); - if (fieldp->linebuf == NULL) - { - fieldfree (fieldp); - return NULL; - } - } - return fieldparse (fieldp, line, delims, flags, maxf); - } - -static field_t * fieldparse (fieldp, line, delims, flags, maxf) - register field_t * fieldp; /* Field structure to parse into */ - register char * line; /* Line to be parsed */ - char * delims; /* Characters to use for field delimiters */ - int flags; /* Option flags; see fields.h */ - int maxf; /* Maximum number of fields to parse */ - { - int fieldmax; /* Max size of fields array */ - char * lineout; /* Where to store xlated char in line */ - char quote; /* Quote character in use */ - - fieldp->nfields = 0; - fieldmax = - (maxf != 0 && maxf < field_field_inc) ? maxf + 2 : field_field_inc; - fieldp->fields = (char **) malloc (fieldmax * sizeof (char *)); - if (fieldp->fields == NULL) - { - fieldfree (fieldp); - return NULL; - } - if ((flags - & (FLD_SHQUOTES | FLD_SNGLQUOTES | FLD_BACKQUOTES | FLD_DBLQUOTES)) - == FLD_SHQUOTES) - flags |= FLD_SNGLQUOTES | FLD_BACKQUOTES | FLD_DBLQUOTES; - while (1) - { - if (flags & FLD_RUNS) - { - while (*line != '\0' && strchr (delims, *line) != NULL) - line++; /* Skip runs of delimiters */ - if (*line == '\0') - break; - } - fieldp->fields[fieldp->nfields] = lineout = line; - /* - * Skip to the next delimiter. At the end of skipping, "line" will - * point to either a delimiter or a null byte. - */ - if (flags - & (FLD_SHQUOTES | FLD_SNGLQUOTES | FLD_BACKQUOTES - | FLD_DBLQUOTES | FLD_BACKSLASH)) - { - while (*line != '\0') - { - if (strchr (delims, *line) != NULL) - break; - else if (((flags & FLD_SNGLQUOTES) && *line == '\'') - || ((flags & FLD_BACKQUOTES) && *line == '`') - || ((flags & FLD_DBLQUOTES) && *line == '"')) - { - if ((flags & FLD_SHQUOTES) == 0 - && line != fieldp->fields[fieldp->nfields]) - quote = '\0'; - else - quote = *line; - } - else - quote = '\0'; - if (quote == '\0') - { - if (*line == '\\' && (flags & FLD_BACKSLASH)) - { - line++; - if (*line == '\0') - break; - line += fieldbackch (line, &lineout, - flags & FLD_STRIPQUOTES); - } - else - *lineout++ = *line++; - } - else - { - /* Process quoted string */ - if ((flags & FLD_STRIPQUOTES) == 0) - *lineout++ = quote; - ++line; - while (*line != '\0') - { - if (*line == quote) - { - if ((flags & FLD_STRIPQUOTES) == 0) - *lineout++ = quote; - line++; /* Go on past quote */ - if ((flags & FLD_SHQUOTES) == 0) - { - while (*line != '\0' - && strchr (delims, *line) == NULL) - line++; /* Skip to delimiter */ - } - break; - } - else if (*line == '\\') - { - if (flags & FLD_BACKSLASH) - { - line++; - if (*line == '\0') - break; - else - line += fieldbackch (line, &lineout, - flags & FLD_STRIPQUOTES); - } - else - { - *lineout++ = '\\'; - if (*++line == '\0') - break; - *lineout++ = *line; - } - } - else - *lineout++ = *line++; - } - } - } - } - else - { - while (*line != '\0' && strchr (delims, *line) == NULL) - line++; /* Skip to delimiter */ - lineout = line; - } - fieldp->nfields++; - if (*line++ == '\0') - break; - if (maxf != 0 && fieldp->nfields > maxf) - break; - *lineout = '\0'; - if (fieldp->nfields >= fieldmax) - { - fieldmax += field_field_inc; - fieldp->fields = - (char **) realloc (fieldp->fields, fieldmax * sizeof (char *)); - if (fieldp->fields == NULL) - { - fieldfree (fieldp); - return NULL; - } - } - } - /* - * Shrink the field pointers and return the field structure. - */ - if ((flags & FLD_NOSHRINK) == 0 && fieldp->nfields >= fieldmax) - { - fieldp->fields = (char **) realloc (fieldp->fields, - (fieldp->nfields + 1) * sizeof (char *)); - if (fieldp->fields == NULL) - { - fieldfree (fieldp); - return NULL; - } - } - fieldp->fields[fieldp->nfields] = NULL; - return fieldp; - } - -static int fieldbackch (str, out, strip) - register char * str; /* First char of backslash sequence */ - register char ** out; /* Where to store result */ - int strip; /* NZ to convert the sequence */ - { - register int ch; /* Character being developed */ - char * origstr; /* Original value of str */ - - if (!strip) - { - *(*out)++ = '\\'; - if (*str != 'x' && *str != 'X' && (*str < '0' || *str > '7')) - { - *(*out)++ = *str; - return *str != '\0'; - } - } - switch (*str) - { - case '\0': - *(*out)++ = '\0'; - return 0; - case 'a': - *(*out)++ = '\007'; - return 1; - case 'b': - *(*out)++ = '\b'; - return 1; - case 'f': - *(*out)++ = '\f'; - return 1; - case 'n': - *(*out)++ = '\n'; - return 1; - case 'r': - *(*out)++ = '\r'; - return 1; - case 'v': - *(*out)++ = '\v'; - return 1; - case 'X': - case 'x': - /* Hexadecimal sequence */ - origstr = str++; - ch = 0; - if (*str >= '0' && *str <= '9') - ch = *str++ - '0'; - else if (*str >= 'a' && *str <= 'f') - ch = *str++ - 'a' + 0xa; - else if (*str >= 'A' && *str <= 'F') - ch = *str++ - 'A' + 0xa; - if (*str >= '0' && *str <= '9') - ch = (ch << 4) | (*str++ - '0'); - else if (*str >= 'a' && *str <= 'f') - ch = (ch << 4) | (*str++ - 'a' + 0xa); - else if (*str >= 'A' && *str <= 'F') - ch = (ch << 4) | (*str++ - 'A' + 0xa); - break; - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - /* Octal sequence */ - origstr = str; - ch = *str++ - '0'; - if (*str >= '0' && *str <= '7') - ch = (ch << 3) | (*str++ - '0'); - if (*str >= '0' && *str <= '7') - ch = (ch << 3) | (*str++ - '0'); - break; - default: - *(*out)++ = *str; - return 1; - } - if (strip) - { - *(*out)++ = ch; - return str - origstr; - } - else - { - for (ch = 0; origstr < str; ch++) - *(*out)++ = *origstr++; - return ch; - } - } - -int fieldwrite (file, fieldp, delim) - FILE * file; /* File to write to */ - register field_t * fieldp; /* Field structure to write */ - int delim; /* Delimiter to place between fields */ - { - int error; /* NZ if an error occurs */ - register int fieldno; /* Number of field being written */ - - error = 0; - for (fieldno = 0; fieldno < fieldp->nfields; fieldno++) - { - if (fieldno != 0) - error |= putc (delim, file) == EOF; - error |= fputs (fieldp->fields[fieldno], file) == EOF; - } - if (fieldp->hadnl) - error |= putc ('\n', file) == EOF; - return error; - } - -void fieldfree (fieldp) - register field_t * fieldp; /* Field structure to free */ - { - - if (fieldp == NULL) - return; - if (fieldp->linebuf != NULL) - free ((char *) fieldp->linebuf); - if (fieldp->fields != NULL) - free ((char *) fieldp->fields); - free ((char *) fieldp); - } diff --git a/snappy-1.1.0/testdata/geo.protodata b/snappy-1.1.0/testdata/geo.protodata deleted file mode 100644 index c4e3e0d..0000000 Binary files a/snappy-1.1.0/testdata/geo.protodata and /dev/null differ diff --git a/snappy-1.1.0/testdata/grammar.lsp b/snappy-1.1.0/testdata/grammar.lsp deleted file mode 100644 index c60a993..0000000 --- a/snappy-1.1.0/testdata/grammar.lsp +++ /dev/null @@ -1,94 +0,0 @@ -;;; -*- Mode: Lisp; Syntax: Common-Lisp; -*- - -(define-language - :grammar - '(((S $any) -> (S1 $any)) - ((S (Compound $s1 $s2)) -> (S1 $s1) (Conjunction) (S1 $s2)) - - ((S1 (Statement $v)) -> (NP $subj) (VP $subj $tense $v)) - ((S1 (Acknowledge $a)) -> (Acknowledge $a)) - ((S1 (Command $v)) -> (VP Self present $v)) - ((S1 (Question $v)) -> (Aux $tense) (NP $subj) (VP $subj $tense $v)) - ((S1 (Question $v)) -> (Be $tense) (NP $subj) (Be-Arg $subj $tense $v)) - - ((Be-Arg $subj $tense (Occur $tense (loc $subj $loc))) -> - (Loc-Adjunct $tense (loc $subj $loc))) - - ((VP $subj $tense (Occur $tense $v)) -> (VP1 $subj $tense $v)) - ((VP $subj $tense (Occur $tense $v)) -> (Aux $tense)(VP1 $subj present $v)) - - ((VP1 $subj $tense $v) -> (VP2 $subj $tense $v) (Adjunct? $v)) - - ((VP2 $subj $tense ($rel $subj $loc)) -> - (Verb/in $rel $tense)) - ((VP2 $subj $tense ($rel $subj $loc $obj)) -> - (Verb/tr $rel $tense) (NP $obj)) - ((VP2 $subj $tense ($rel $subj $loc $obj $obj2)) -> - (Verb/di $rel $tense) (NP $obj) (NP $obj2)) - ((VP2 $subj $tense (loc $subj $loc)) -> - (Be $tense) (Loc-Adjunct $tense (loc $subj $loc))) - - ((NP $n) -> (Pronoun $n)) - ((NP $n) -> (Article) (Noun $n)) - ((NP $n) -> (Noun $n)) - ((NP ($x $y)) -> (Number $x) (Number $y)) - - ((PP ($prep $n)) -> (Prep $prep) (NP $n)) - ((Adjunct? $v) ->) - ((Adjunct? $v) -> (Loc-Adjunct $tense $v)) - #+Allegro ((Loc-Adjunct $tense ($rel $subj $loc @rest)) -> (PP $loc)) - #+Allegro ((Loc-Adjunct $tense ($rel $subj $loc @rest)) -> (Adjunct $loc)) - #+Lucid ((Loc-Adjunct $tense ($rel $subj $loc . $rest)) -> (PP $loc)) - #+Lucid ((Loc-Adjunct $tense ($rel $subj $loc . $rest)) -> (Adjunct $loc)) - - ) - :lexicon - '( - ((Acknowledge $a) -> (yes true) (no false) (maybe unknown) (huh unparsed)) - ((Adjunct $loc) -> here there (nearby near) near left right up down) - ((Article) -> a an the) - ((Aux $tense) -> (will future) (did past) (do $finite)) - ((Be $tense) -> (am present) (are present) (is present) (be $finite) - (was past) (were past)) - ((Conjunction) -> and --) - ((Noun $n) -> gold Wumpus pit breeze stench glitter nothing) - ((Number $n) -> 0 1 2 3 4 5 6 7 8 9) - ((Prep $prep) -> in at to near) - ((Pronoun $n) -> (you self) (me master) (I master)) - - ((Verb/in $rel $tense) -> (go move $finite) (went move past) - (move move $finite) (move move past) (shoot shoot $finite)) - ((Verb/tr $rel $tense) -> (move carry $finite) (moved carry past) - (carry carry $finite) (carry carried past) - (grab grab $finite) (grab grabbed past) (get grab $finite) - (got grab past) (release release $finite) (release release past) - (drop release $finite) (dropped release past) (shoot shoot-at $finite) - (shot shoot-at past) (kill shoot-at $finite) (killed shoot-at past) - (smell perceive $finite) (feel perceive $finite) (felt perceive past)) - ((Verb/di $rel $tense) -> (bring bring $finite) (brought bring past) - (get bring $finite) (got bring past)) - )) - -(defparameter *sentences* - '((I will shoot the wumpus at 4 4) - (yes) - (You went right -- I will go left) - (carry the gold) - (yes and no) - (did you bring me the gold) - (a breeze is here -- I am near 5 3) - (a stench is in 3 5) - (a pit is nearby) - (is the wumpus near) - (Did you go to 3 8) - (Yes -- Nothing is there) - (Shoot -- Shoot left) - (Kill the wumpus -- shoot up))) - -(defun ss (&optional (sentences *sentences*)) - "Run some test sentences, and count how many were not parsed." - (count-if-not - #'(lambda (s) - (format t "~2&>>> ~(~{~a ~}~)~%" s) - (write (second (parse s)) :pretty t)) - *sentences*)) diff --git a/snappy-1.1.0/testdata/house.jpg b/snappy-1.1.0/testdata/house.jpg deleted file mode 100644 index 6b3aae8..0000000 Binary files a/snappy-1.1.0/testdata/house.jpg and /dev/null differ diff --git a/snappy-1.1.0/testdata/html b/snappy-1.1.0/testdata/html deleted file mode 100644 index ef768cc..0000000 --- a/snappy-1.1.0/testdata/html +++ /dev/null @@ -1 +0,0 @@ - content: @ 1099872000000000: 'HTTP/1.1 200 OK\r\nX-Google-Crawl-Date: Mon, 08 Nov 2004 17:22:09 GMT\r\nContent-Type: text/html\r\nConnection: close\r\nX-Powered-By: PHP/4.3.8\r\nServer: Apache/1.3.31 (Unix) mod_gzip/1.3.19.1a PHP/4.3.8\r\nDate: Mon, 08 Nov 2004 17:19:07 GMT\r\n\r\n \r\n\r\n\r\n\r\n\r\n\nMicro Achat : Ordinateurs, PDA - Toute l\'informatique avec 01Informatique, L\'Ordinateur Individuel, Micro Hebdo, D\351cision Informatique et 01R\351seaux\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n
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Derni\350re mise \340 jour de cette page : lundi 8 novembre 2004  |  16:45
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Imagerie 
\"\"\n\t\t\t\t\t\t\t\tLG L1720B\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
332.89 €
\n\t\t\t\t\t\t\t\t
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tAcer Veriton 7600G\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
705 €
\n\t\t\t\t\t\t\t\t
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tShuttle SN95G5\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
375 €
\n\t\t\t\t\t\t\t\t
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Composants 
\"\"\n\t\t\t\t\t\t\t\tAsus A7N8X-E Deluxe\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
91.99 €
\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t
Composants 
\"\"\n\t\t\t\t\t\t\t\tThermalright SP-94\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
49 €
\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t
\"\"
1 \">\"PC Look
2 \">\"Atelier Informatique
3 \">\"Zanax Multim\351dia
4 \">\"MISTEROOPS
5 \">\"168 Golden Avenue
6 \">\"microchoix
7 \">\"e-Soph
8 \">\"PC Price Club
9 \">\"PC 77
10 \">\"Web In Informatique
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\r\n \r\n\r\n\r\n\r\n\r\n\r\n
\r\n\t\t\r\n\t\t\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\t\t
\n\n\n\n\n\n\n\n\n\n\n\n\n
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\r\n\r\n\r\n \r\n \r\n\t\r\n\t\t\r\n\t\t\r\n\t\t\r\n\t\r\n
\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t

CD et DVD bient\364t insensibles aux rayures
OpenOffice gagne son service
La messagerie en cinq minutes selon Ipswitch
> toutes les news


\r\n\t\t
\r\n \r\n\r\n\r\n\r\n\t\r\n\t\t\r\n\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\t\r\n\t\r\n
\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t

Recevez chaque jour l\'actualit\351 des produits et des promos
\r\n\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t


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\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t \r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t

Entreprise
\r\n\t\t\t\tQuand le billet papier s\'envole vers la d\351mat\351rialisation


Trucs et astuces
\r\n\t\t\t\tD\351pannez Windows XP


Conso
\r\n\t\t\t\tVos photos sur papier imprimante ou labo ?


Produits & Tests
\r\n\t\t\t\t5 programmes d\222encodage vid\351o gratuits


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\r\n\t\t\r\n\t\t\r\n\r\n\r\n\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\t\t\r\n\t\t
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\r\n\r\n\r\n\t\r\n\r\n\r\n\r\n\t\t\t\r\n\r\n\r\n\r\n\t\t\t\t\r\n
\r\n
\r\nPortable
\r\nUn nouvel ultra portable r\351alis\351 par Nec
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nLe Versa S940 a un format r\351duit, mais ses performances sont \340 la hauteur.
\r\n\340 partir de 1663 \200\r\n		\r\n
\r\nPortable
\r\nAsus pr\351sente trois petits nouveaux dans la gamme A3N
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nCes trois portables Centrino int\350grent, entre autres, une webcam et un contr\364leur Wi-Fi.
\r\n\340 partir de 1346 \200\r\n
\r\n		 \r\n\t\r\n\t\r\n\t\r\n \t\r\n\t\r\n\t\r\n \t\r\n\t\r\n\t
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BON PLAN
\r\n
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\r\nLes derni\350res technologies INTEL dans un nouveau design pour ce shuttle haut de gamme, pour un prix abordable.
\r\n

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\r\n\340 partir de
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415 \200
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publicit\351
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\r\n\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n
\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t

\r\n\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\tDesktops
\r\n\t\t\t\tPortables
\r\n\t\t\t\tMini-PC
\r\n\t\t\t\tPda / Tablets-PC
\r\n\t\t\t\tApple
\r\n\t\t\t\tGPS
\r\n\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t


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\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\t\t\r\n\t\r\n\t\r\n\t\t\t\t\r\n\t\r\n\t\r\n\t\t\t\t\r\n\t\r\n\t\r\n\t\t\t\t\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t
\r\n\tPortable Toshiba consacre deux gammes de machines au multim\351dia
\r\n\tEquipement haut de gamme et Windows Media Center sont au menu de ces portables \340 vocation multim\351dia.

\r\n\tOrdinateur Arriv\351e d\'un Power Mac G5 d\'entr\351e de gamme
\r\n\tLa firme \340 la pomme propose une station de travail \351volutive et relativement abordable.

\r\n\tPC Alienware propose deux machines au look \351trange
\r\n\tAurora et Area 51 sont deux gammes d\'ordinateurs enti\350rement configurables.

\r\n\tPortable Trois nouveaux iBook G4 chez Apple
\r\n\tChez Apple, les portables gagnent en vitesse et communiquent sans fil en standard.

\r\n\t\t\t\t> toutes les news\r\n\t\t\t
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\r\n\r\n\t\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \tAsus A3N15-C Pro
\r\n Voici un portable autonome et puissant gr\342ce \340 la technologie Intel Centrino.
\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t
\r\n\t1170 \200
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\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \tSoltek EQ3702A Miroir
\r\n Ce mini PC est une solution int\351ressante pour les utilisateurs poss\351dant d\351j\340 un \351cran.
\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t
\r\n\t559 \200
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\r\n\t\t\t\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \tIBM ThinkPad R51
\r\n Voici un portable complet et pourtant relativement l\351ger.
\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t
\r\n\t1299 \200
\r\n
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\r\n\t\t\t\t> toutes les promos\r\n\t\t
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\r\n\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n

\r\n		 \r\n\r\n\t\r\n\t\t\r\n\t\r\n

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\r\n\t\t\t\r\n\t\t\t\t\r\n\r\n\r\n\r\n \r\n\r\n\r\n \r\n\r\n\r\n\r\n\r\n\t\t\r\n\t\t
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\r\n\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\r\n
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\r\n\t\r\n\r\n
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\n
\r\n
\r\nLes graveurs de DVD
\r\nQuel graveur choisir ? Quel type de format ? Quelle vitesse ? Double couche ou simple couche ? Voici tout ce qu\'il faut savoir pour faire le bon choix.
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\r\n		 \r\n\r\n\r\n\t\r\n\t\t\r\n\r\n\r\n \t\r\n
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\r\n\t\t\t\t

\r\n\t\t\t\tChoisir une r\351gion
\r\n\r\n
Un d\351partement
\r\n\r\n
\r\n
Un arrondissement
\r\n\r\n
\r\n
\r\n\t\t\t\tRecherche directe
\r\n\t\t\t\trechercher une ville
et/ou une boutique
\r\n\t\t\t\t

\r\n\t\t\t\t \r\n\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t
Recherche avanc\351e
\r\n\t\t\t\t
\r\n\t\t\t\t
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\r\n\t\t		\r\n
\r\n\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\r\n
\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t
Bureautique
\r\n\t\t\t\tTraducteur, organiseur...

\r\n\t\t\t\t

Multim\351dia
\r\n\t\t\t\tPhoto, audio, vid\351o...

\r\n\t\t\t\t

Utilitaires
\r\n\t\t\t\tAntivirus, pilotes, gravure...

\r\n\t\t\t\t

Personnaliser son PC
\r\n\t\t\t\tEcrans de veille, th\350mes...

\r\n\t\t\t\t

D\351veloppement
\r\n\t\t\t\tCr\351ation de logiciels, BDD...

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Jeux
\r\n\t\t\t\tAction, simulation...

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Internet
\r\n\t\t\t\tUtilitaires, email, FTP...

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Loisirs
\r\n\t\t\t\tHumour, culture...

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\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\nMicro Achat : Ordinateurs, PDA - Toute l\'informatique avec 01Informatique, L\'Ordinateur Individuel, Micro Hebdo, D\351cision Informatique et 01R\351seaux\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n
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Derni\350re mise \340 jour de cette page : lundi 8 novembre 2004  |  16:45
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\"\"
Imagerie 
\"\"\n\t\t\t\t\t\t\t\tLG L1720B\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
332.89 €
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tAcer Veriton 7600G\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
705 €
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tShuttle SN95G5\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
375 €
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Composants 
\"\"\n\t\t\t\t\t\t\t\tAsus A7N8X-E Deluxe\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
91.99 €
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Composants 
\"\"\n\t\t\t\t\t\t\t\tThermalright SP-94\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
49 €
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\"\"
1 \">\"PC Look
2 \">\"Atelier Informatique
3 \">\"Zanax Multim\351dia
4 \">\"MISTEROOPS
5 \">\"168 Golden Avenue
6 \">\"microchoix
7 \">\"e-Soph
8 \">\"PC Price Club
9 \">\"PC 77
10 \">\"Web In Informatique
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CD et DVD bient\364t insensibles aux rayures
OpenOffice gagne son service
La messagerie en cinq minutes selon Ipswitch
> toutes les news


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Recevez chaque jour l\'actualit\351 des produits et des promos
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Entreprise
\r\n\t\t\t\tQuand le billet papier s\'envole vers la d\351mat\351rialisation


Trucs et astuces
\r\n\t\t\t\tD\351pannez Windows XP


Conso
\r\n\t\t\t\tVos photos sur papier imprimante ou labo ?


Produits & Tests
\r\n\t\t\t\t5 programmes d\222encodage vid\351o gratuits


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\r\nPortable
\r\nUn nouvel ultra portable r\351alis\351 par Nec
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nLe Versa S940 a un format r\351duit, mais ses performances sont \340 la hauteur.
\r\n\340 partir de 1663 \200\r\n		\r\n
\r\nPortable
\r\nAsus pr\351sente trois petits nouveaux dans la gamme A3N
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nCes trois portables Centrino int\350grent, entre autres, une webcam et un contr\364leur Wi-Fi.
\r\n\340 partir de 1346 \200\r\n
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BON PLAN
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\r\nLes derni\350res technologies INTEL dans un nouveau design pour ce shuttle haut de gamme, pour un prix abordable.
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publicit\351
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\r\n\t\t\t\tMini-PC
\r\n\t\t\t\tPda / Tablets-PC
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\r\n\tPortable Toshiba consacre deux gammes de machines au multim\351dia
\r\n\tEquipement haut de gamme et Windows Media Center sont au menu de ces portables \340 vocation multim\351dia.

\r\n\tOrdinateur Arriv\351e d\'un Power Mac G5 d\'entr\351e de gamme
\r\n\tLa firme \340 la pomme propose une station de travail \351volutive et relativement abordable.

\r\n\tPC Alienware propose deux machines au look \351trange
\r\n\tAurora et Area 51 sont deux gammes d\'ordinateurs enti\350rement configurables.

\r\n\tPortable Trois nouveaux iBook G4 chez Apple
\r\n\tChez Apple, les portables gagnent en vitesse et communiquent sans fil en standard.

\r\n\t\t\t\t> toutes les news\r\n\t\t\t
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\r\n Voici un portable autonome et puissant gr\342ce \340 la technologie Intel Centrino.
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\r\n Ce mini PC est une solution int\351ressante pour les utilisateurs poss\351dant d\351j\340 un \351cran.
\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t
\r\n\t559 \200
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\r\n Voici un portable complet et pourtant relativement l\351ger.
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\r\n\t1299 \200
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\r\nLes graveurs de DVD
\r\nQuel graveur choisir ? Quel type de format ? Quelle vitesse ? Double couche ou simple couche ? Voici tout ce qu\'il faut savoir pour faire le bon choix.
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\r\n\t\t\t\tChoisir une r\351gion
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Un arrondissement
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\r\n\t\t\t\tRecherche directe
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et/ou une boutique
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Recherche avanc\351e
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Bureautique
\r\n\t\t\t\tTraducteur, organiseur...

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Multim\351dia
\r\n\t\t\t\tPhoto, audio, vid\351o...

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Utilitaires
\r\n\t\t\t\tAntivirus, pilotes, gravure...

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Personnaliser son PC
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D\351veloppement
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\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\nMicro Achat : Ordinateurs, PDA - Toute l\'informatique avec 01Informatique, L\'Ordinateur Individuel, Micro Hebdo, D\351cision Informatique et 01R\351seaux\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n
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Derni\350re mise \340 jour de cette page : lundi 8 novembre 2004  |  16:45
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\"\"
Imagerie 
\"\"\n\t\t\t\t\t\t\t\tLG L1720B\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
332.89 €
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tAcer Veriton 7600G\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
705 €
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tShuttle SN95G5\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
375 €
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Composants 
\"\"\n\t\t\t\t\t\t\t\tAsus A7N8X-E Deluxe\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
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Composants 
\"\"\n\t\t\t\t\t\t\t\tThermalright SP-94\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
49 €
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\"\"
1 \">\"PC Look
2 \">\"Atelier Informatique
3 \">\"Zanax Multim\351dia
4 \">\"MISTEROOPS
5 \">\"168 Golden Avenue
6 \">\"microchoix
7 \">\"e-Soph
8 \">\"PC Price Club
9 \">\"PC 77
10 \">\"Web In Informatique
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CD et DVD bient\364t insensibles aux rayures
OpenOffice gagne son service
La messagerie en cinq minutes selon Ipswitch
> toutes les news


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Recevez chaque jour l\'actualit\351 des produits et des promos
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Entreprise
\r\n\t\t\t\tQuand le billet papier s\'envole vers la d\351mat\351rialisation


Trucs et astuces
\r\n\t\t\t\tD\351pannez Windows XP


Conso
\r\n\t\t\t\tVos photos sur papier imprimante ou labo ?


Produits & Tests
\r\n\t\t\t\t5 programmes d\222encodage vid\351o gratuits


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\r\nPortable
\r\nUn nouvel ultra portable r\351alis\351 par Nec
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nLe Versa S940 a un format r\351duit, mais ses performances sont \340 la hauteur.
\r\n\340 partir de 1663 \200\r\n		\r\n
\r\nPortable
\r\nAsus pr\351sente trois petits nouveaux dans la gamme A3N
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nCes trois portables Centrino int\350grent, entre autres, une webcam et un contr\364leur Wi-Fi.
\r\n\340 partir de 1346 \200\r\n
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BON PLAN
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\r\nLes derni\350res technologies INTEL dans un nouveau design pour ce shuttle haut de gamme, pour un prix abordable.
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publicit\351
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\r\n\tPortable Toshiba consacre deux gammes de machines au multim\351dia
\r\n\tEquipement haut de gamme et Windows Media Center sont au menu de ces portables \340 vocation multim\351dia.

\r\n\tOrdinateur Arriv\351e d\'un Power Mac G5 d\'entr\351e de gamme
\r\n\tLa firme \340 la pomme propose une station de travail \351volutive et relativement abordable.

\r\n\tPC Alienware propose deux machines au look \351trange
\r\n\tAurora et Area 51 sont deux gammes d\'ordinateurs enti\350rement configurables.

\r\n\tPortable Trois nouveaux iBook G4 chez Apple
\r\n\tChez Apple, les portables gagnent en vitesse et communiquent sans fil en standard.

\r\n\t\t\t\t> toutes les news\r\n\t\t\t
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\r\n Voici un portable autonome et puissant gr\342ce \340 la technologie Intel Centrino.
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\r\n Ce mini PC est une solution int\351ressante pour les utilisateurs poss\351dant d\351j\340 un \351cran.
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\r\n Voici un portable complet et pourtant relativement l\351ger.
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\r\n
\r\nLes graveurs de DVD
\r\nQuel graveur choisir ? Quel type de format ? Quelle vitesse ? Double couche ou simple couche ? Voici tout ce qu\'il faut savoir pour faire le bon choix.
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\r\n\t\t\t\tChoisir une r\351gion
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Un d\351partement
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Un arrondissement
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\r\n\t\t\t\tRecherche directe
\r\n\t\t\t\trechercher une ville
et/ou une boutique
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\r\n\t\t\t\t \r\n\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t
Recherche avanc\351e
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Bureautique
\r\n\t\t\t\tTraducteur, organiseur...

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Multim\351dia
\r\n\t\t\t\tPhoto, audio, vid\351o...

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Utilitaires
\r\n\t\t\t\tAntivirus, pilotes, gravure...

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Personnaliser son PC
\r\n\t\t\t\tEcrans de veille, th\350mes...

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D\351veloppement
\r\n\t\t\t\tCr\351ation de logiciels, BDD...

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Jeux
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Internet
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\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\nMicro Achat : Ordinateurs, PDA - Toute l\'informatique avec 01Informatique, L\'Ordinateur Individuel, Micro Hebdo, D\351cision Informatique et 01R\351seaux\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n
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Derni\350re mise \340 jour de cette page : lundi 8 novembre 2004  |  16:45
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\"\"
Imagerie 
\"\"\n\t\t\t\t\t\t\t\tLG L1720B\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
332.89 €
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tAcer Veriton 7600G\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
705 €
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tShuttle SN95G5\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
375 €
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Composants 
\"\"\n\t\t\t\t\t\t\t\tAsus A7N8X-E Deluxe\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
91.99 €
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Composants 
\"\"\n\t\t\t\t\t\t\t\tThermalright SP-94\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
49 €
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\"\"
1 \">\"PC Look
2 \">\"Atelier Informatique
3 \">\"Zanax Multim\351dia
4 \">\"MISTEROOPS
5 \">\"168 Golden Avenue
6 \">\"microchoix
7 \">\"e-Soph
8 \">\"PC Price Club
9 \">\"PC 77
10 \">\"Web In Informatique
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CD et DVD bient\364t insensibles aux rayures
OpenOffice gagne son service
La messagerie en cinq minutes selon Ipswitch
> toutes les news


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Recevez chaque jour l\'actualit\351 des produits et des promos
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Entreprise
\r\n\t\t\t\tQuand le billet papier s\'envole vers la d\351mat\351rialisation


Trucs et astuces
\r\n\t\t\t\tD\351pannez Windows XP


Conso
\r\n\t\t\t\tVos photos sur papier imprimante ou labo ?


Produits & Tests
\r\n\t\t\t\t5 programmes d\222encodage vid\351o gratuits


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\r\nPortable
\r\nUn nouvel ultra portable r\351alis\351 par Nec
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nLe Versa S940 a un format r\351duit, mais ses performances sont \340 la hauteur.
\r\n\340 partir de 1663 \200\r\n		\r\n
\r\nPortable
\r\nAsus pr\351sente trois petits nouveaux dans la gamme A3N
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nCes trois portables Centrino int\350grent, entre autres, une webcam et un contr\364leur Wi-Fi.
\r\n\340 partir de 1346 \200\r\n
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BON PLAN
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\r\nLes derni\350res technologies INTEL dans un nouveau design pour ce shuttle haut de gamme, pour un prix abordable.
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415 \200
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publicit\351
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\r\n
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\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\t\t\r\n\t\r\n\t\r\n\t\t\t\t\r\n\t\r\n\t\r\n\t\t\t\t\r\n\t\r\n\t\r\n\t\t\t\t\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t
\r\n\tPortable Toshiba consacre deux gammes de machines au multim\351dia
\r\n\tEquipement haut de gamme et Windows Media Center sont au menu de ces portables \340 vocation multim\351dia.

\r\n\tOrdinateur Arriv\351e d\'un Power Mac G5 d\'entr\351e de gamme
\r\n\tLa firme \340 la pomme propose une station de travail \351volutive et relativement abordable.

\r\n\tPC Alienware propose deux machines au look \351trange
\r\n\tAurora et Area 51 sont deux gammes d\'ordinateurs enti\350rement configurables.

\r\n\tPortable Trois nouveaux iBook G4 chez Apple
\r\n\tChez Apple, les portables gagnent en vitesse et communiquent sans fil en standard.

\r\n\t\t\t\t> toutes les news\r\n\t\t\t
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\r\n\r\n\t\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \tAsus A3N15-C Pro
\r\n Voici un portable autonome et puissant gr\342ce \340 la technologie Intel Centrino.
\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t
\r\n\t1170 \200
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\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \tSoltek EQ3702A Miroir
\r\n Ce mini PC est une solution int\351ressante pour les utilisateurs poss\351dant d\351j\340 un \351cran.
\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t\r\n\t
\r\n\t559 \200
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\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \tIBM ThinkPad R51
\r\n Voici un portable complet et pourtant relativement l\351ger.
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\r\nLes graveurs de DVD
\r\nQuel graveur choisir ? Quel type de format ? Quelle vitesse ? Double couche ou simple couche ? Voici tout ce qu\'il faut savoir pour faire le bon choix.
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\r\n\t\t\t\tChoisir une r\351gion
\r\n\r\n
Un d\351partement
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Un arrondissement
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\r\n\t\t\t\tRecherche directe
\r\n\t\t\t\trechercher une ville
et/ou une boutique
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\r\n\t\t\t\t \r\n\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t
Recherche avanc\351e
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Bureautique
\r\n\t\t\t\tTraducteur, organiseur...

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Multim\351dia
\r\n\t\t\t\tPhoto, audio, vid\351o...

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Utilitaires
\r\n\t\t\t\tAntivirus, pilotes, gravure...

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Personnaliser son PC
\r\n\t\t\t\tEcrans de veille, th\350mes...

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D\351veloppement
\r\n\t\t\t\tCr\351ation de logiciels, BDD...

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Jeux
\r\n\t\t\t\tAction, simulation...

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Internet
\r\n\t\t\t\tUtilitaires, email, FTP...

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Loisirs
\r\n\t\t\t\tHumour, culture...

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\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\nMicro Achat : Ordinateurs, PDA - Toute l\'informatique avec 01Informatique, L\'Ordinateur Individuel, Micro Hebdo, D\351cision Informatique et 01R\351seaux\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\r\n\t\r\n
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Derni\350re mise \340 jour de cette page : lundi 8 novembre 2004  |  16:45
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\"\"
Imagerie 
\"\"\n\t\t\t\t\t\t\t\tLG L1720B\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
332.89 €
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tAcer Veriton 7600G\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
705 €
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Ordinateurs 
\"\"\n\t\t\t\t\t\t\t\tShuttle SN95G5\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
375 €
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Composants 
\"\"\n\t\t\t\t\t\t\t\tAsus A7N8X-E Deluxe\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
91.99 €
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Composants 
\"\"\n\t\t\t\t\t\t\t\tThermalright SP-94\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\340 partir de\n\t\t\t\t\t\t\t\t\t
49 €
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\"\"
1 \">\"PC Look
2 \">\"Atelier Informatique
3 \">\"Zanax Multim\351dia
4 \">\"MISTEROOPS
5 \">\"168 Golden Avenue
6 \">\"microchoix
7 \">\"e-Soph
8 \">\"PC Price Club
9 \">\"PC 77
10 \">\"Web In Informatique
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CD et DVD bient\364t insensibles aux rayures
OpenOffice gagne son service
La messagerie en cinq minutes selon Ipswitch
> toutes les news


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Recevez chaque jour l\'actualit\351 des produits et des promos
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Entreprise
\r\n\t\t\t\tQuand le billet papier s\'envole vers la d\351mat\351rialisation


Trucs et astuces
\r\n\t\t\t\tD\351pannez Windows XP


Conso
\r\n\t\t\t\tVos photos sur papier imprimante ou labo ?


Produits & Tests
\r\n\t\t\t\t5 programmes d\222encodage vid\351o gratuits


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\r\nPortable
\r\nUn nouvel ultra portable r\351alis\351 par Nec
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nLe Versa S940 a un format r\351duit, mais ses performances sont \340 la hauteur.
\r\n\340 partir de 1663 \200\r\n		\r\n
\r\nPortable
\r\nAsus pr\351sente trois petits nouveaux dans la gamme A3N
\r\n\r\n\t\t\t\t\t \t \t\t\t\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t \t\r\nCes trois portables Centrino int\350grent, entre autres, une webcam et un contr\364leur Wi-Fi.
\r\n\340 partir de 1346 \200\r\n
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BON PLAN
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\r\nLes derni\350res technologies INTEL dans un nouveau design pour ce shuttle haut de gamme, pour un prix abordable.
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publicit\351
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\r\n\t\t\t\tMini-PC
\r\n\t\t\t\tPda / Tablets-PC
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\r\n\tPortable Toshiba consacre deux gammes de machines au multim\351dia
\r\n\tEquipement haut de gamme et Windows Media Center sont au menu de ces portables \340 vocation multim\351dia.

\r\n\tOrdinateur Arriv\351e d\'un Power Mac G5 d\'entr\351e de gamme
\r\n\tLa firme \340 la pomme propose une station de travail \351volutive et relativement abordable.

\r\n\tPC Alienware propose deux machines au look \351trange
\r\n\tAurora et Area 51 sont deux gammes d\'ordinateurs enti\350rement configurables.

\r\n\tPortable Trois nouveaux iBook G4 chez Apple
\r\n\tChez Apple, les portables gagnent en vitesse et communiquent sans fil en standard.

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\r\n Voici un portable autonome et puissant gr\342ce \340 la technologie Intel Centrino.
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\r\n Ce mini PC est une solution int\351ressante pour les utilisateurs poss\351dant d\351j\340 un \351cran.
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\r\n Voici un portable complet et pourtant relativement l\351ger.
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\r\nLes graveurs de DVD
\r\nQuel graveur choisir ? Quel type de format ? Quelle vitesse ? Double couche ou simple couche ? Voici tout ce qu\'il faut savoir pour faire le bon choix.
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\r\n\t\t\t\tChoisir une r\351gion
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Un d\351partement
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Un arrondissement
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\r\n\t\t\t\tRecherche directe
\r\n\t\t\t\trechercher une ville
et/ou une boutique
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Recherche avanc\351e
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Bureautique
\r\n\t\t\t\tTraducteur, organiseur...

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Multim\351dia
\r\n\t\t\t\tPhoto, audio, vid\351o...

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Utilitaires
\r\n\t\t\t\tAntivirus, pilotes, gravure...

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Personnaliser son PC
\r\n\t\t\t\tEcrans de veille, th\350mes...

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D\351veloppement
\r\n\t\t\t\tCr\351ation de logiciels, BDD...

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Jeux
\r\n\t\t\t\tAction, simulation...

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Internet
\r\n\t\t\t\tUtilitaires, email, FTP...

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Loisirs
\r\n\t\t\t\tHumour, culture...

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