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Bug: none
Test: run simpleperf_unit_test
Change-Id: I348028ee5bea90ce908bc240fc5efc22c4cd540f
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Simpleperf makes a wrong assumption that the kernel always load
.text section of a kernel module at the start of its module memory.
This can map an ip addr of a module to a wrong symbol.
To fix it:
1. In KernelModuleDso, calculate min_vaddr and memory_offset, which
are used to do the conversion in IpToVaddrInFile().
2. Change record_file_reader/writer to store min_vaddr and memory_offset
of KernelModuleDso in the recording file.
3. To get module start addresses, Use CheckKernelSymbolAddress() in
GetLoadedModules().
Bug: 174076407
Test: run simpleperf_unit_test.
Test: run simpleperf manually to check symbols of kernel modules.
Change-Id: I2498564f78dcc34761c5fe3ae9ffa6b88a98a048
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1. Refactor KernelDso class to handle kernel address randomization.
2. Add Dso::IpToFileOffset() to convert ip addresses to file offsets,
and use special operation for KernelDso.
3. Search for vmlinux in symbol dirs.
4. Delay creating KernelDso to use the kernel build id in recording
files.
Bug: 172933381
Test: run simpleperf_unit_test
Test: run `simpleperf inject` manually to inject kernel etm data.
Change-Id: Ice7f465a6f1e870740cc8ceaf8da76220026adef
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Bug: 164091700
Test: simpleperf_unit_test
Change-Id: I73c56d87518e22146dd7ec62c52ed80640369b59
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Also print a warning when a debug file in symfs_dir can't be used
because of build_id mismatch.
Bug: 161546498
Test: run simpleperf_unit_test
Change-Id: I8d1d538a4a62339d236e665141b114428776fb54
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Simpleperf can download unstripped libraries on device and use them
for unwinding during recording, through `app_profiler.py -lib` and
`simpleperf record --symfs` options. But it doesn't support libraries
without build ids.
To support them:
1. In app_profiler.py, download libraries without build ids in native
lib dir.
2. In DebugElfFileFinder in dso.cpp, check path with the same basename
in symfs_dir.
Also add document for downloading unstripped libraries on device.
Bug: none
Test: run simpleperf_unit_test.
Test: run test.py.
Change-Id: I5d9015e683f2ecb992d425a42f1f7303307b2cea
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Native libraries in apks may not have build ids. So change to below
rules when looking for a debug elf file:
1) If having a build id, the build ids should match.
2) Otherwise, the debug elf file should exist and not have a build id.
Bug: none
Test: run simpleperf_unit_test.
Test: test.py.
Change-Id: I01332e3010a6df17e70c6c55e15874d43bfaeb86
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The content in build_id_list may not match files exist in symfs dir,
(like due to interrupted tests).
So in simpleperf binary, do build id check for files in build_id_list.
Also check if files exist in NativeLibDownloader.
Bug: 134164477
Test: run simpleperf_unit_test.
Test: run test.py TestNativeLibDownloader*
Change-Id: Ida435d17d4fead2ba3a14c7766ecaf7cf12448b2
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Apps may run with libraries with multiple executable segments.
Symbolization ip addresses in these libraries need to use map.pgoff.
The old formula converting ip to vaddr_in_file:
vaddr_in_file = ip - map.start + min_executable_vaddr
The new formula converting ip to vaddr_in_file:
offset_in_file = ip - map.start + map.pgoff
vaddr_in_file = offset_in_file - file_offset_of_min_executable_vaddr
+ min_executable_vaddr
Bug: 124056476
Test: run simpleperf_unit_test.
Test: use simpleperf to profile facebook app, ip addresses hitting libc.so
Test: and libart.so are symbolized correctly.
Change-Id: I5fd3ed822a916c4d04a9868d6d209c43ee190c5b
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Test: compile
Bug: 119313545
Change-Id: I664fb32522d01909c603d7b903475c4e9aea9223
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Fix test failures caused by path separator and newline character.
Bug: 117568547
Test: run simpleperf_unit_test on windows.
Change-Id: I0522268368a2288893ecd52f505382c512d1d7c9
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--symdir option is used to provide a directory containing files with
symbols. Mutliple --symdir options can be used to provide more than
one directories. For each symbol directory, simpleperf collects build
id for all elf files under it recursively. Then simpleperf can use
the collected build ids to find files with symbols.
Also fix an error in GetCompleteProcessName().
Bug: 111687223
Test: run simpleperf_unit_test.
Change-Id: Ieac5ebf7451ae85ca15c3eae37bac3c89615580b
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It contains below changes:
1. Support monitoring multiple processes in JITDebugReader.
2. Switch from 100ms period to 100ms interval when scanning JIT debug
info changes.
3. Limit read entry length by seqlock different instead of a fixed
value.
4. Support disable/enable periodic events in IOEventLoop.
5. Remove duplicated dex file offsets in DexFileDso.
6. Enable JITDebugReader for recording on Android P.
7. Remove " (deleted)" suffix in filenames of maps, because some vdex
files in map file have this suffix.
Bug: http://b/79118393
Test: run `simpleperf record -a` manually.
Test: run simpleperf_unit_test.
Change-Id: Ia398ddd7bc74cbc5fdca6caa6f548a62447d9729
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Bug: none.
Test: run simpleperf_unit_test.
Change-Id: I206c9c67cd96025956246c1bd080653f532a9112
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1. Remove GetBuildIdFromApkFile and ParseSymbolsFromApkFile, because
their function can be supported using ApkInspector::FindElfInApkByName
and read_elf.h.
2. Remove ApkInspector::FindOffsetInApkByName, instead the caller can
use ApkInspector::FindElfInApkByName directly.
3. In ApkInspector::embedded_elf_cache_, add map for entry_name. So
the EmbeddedElfs added by cmd_record.cpp can be used by OfflineUnwinder.
Also support reading min executable virtual address from embedded elfs
in ElfDso.
Also avoid segfault reading build id of elf files with broken section
table, and add test.
Bug: none.
Test: run simpleperf_unit_test.
Change-Id: I2e4f51a5e348138cbf7445ec6dd42dbd6ae1b03d
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As suggested in comments of
https://android-review.googlesource.com/c/platform/system/extras/+/667472.
Bug: none
Test: run test.py.
Change-Id: I55882f1cb07d87a5e09b75ab7ef901e478d614de
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Bug: none.
Test: run simpleperf_unit_test.
Test: run test.py.
Change-Id: I9c77ce1704d7d7038c450a5f85c569dc2a728b92
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When simpleperf does unwinding while recording, it processes mmap
records before reading dex file linked list (via JITDebugReader).
To process mmap records, it creates Dso objects of type ELF_FILE.
Then after reading dex file linked list, it realizes some ELF_FILE Dso
should actually be DEX_FILE.
So this patch supports converting Dso objects of type ELF_FILE
into DEX_FILE when they have dex file offsets.
Bug: http://b/73126888
Test: run simpleperf_unit_test.
Test: run `simpleperf record -g --no-post-unwind` on an app.
Change-Id: I580a382724b17c1396a7f52d7b3f5df45bcbcfb7
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Apks are usually built with stripped native libs, so app_profiler.py
supports downloading native libs on device, and pass the native lib
directory to simpleperf via --symfs option. However, it has below
problems:
1. It needs to download native libs each time profiling.
2. It needs to wait until the app starts and read the /proc/pid/maps to
know which native libs are needed.
This patch solves the problems as below:
1. When app_profiler.py downloads native libs, it will write a
build_id_list file in the native lib directory, which is a map from
build_id to debug library path.
2. Simpleperf searchs build_id_list in the native lib directory, and
uses build_id to find the debug files it needs.
3. Before downloading libs, app_profiler.py checks build_id_list to
find libs available on device, thus avoids downloading libs more than
once.
Add tests in simpleperf_unit_test and test.py.
Update demos to Android Studio 3.2.
In profiling.gradle, remove the logic preventing stripping native
libs in apk to test this patch. Another reason to remove it is because
I found it affects release builds.
Bug: http://b/69165587
Test: run simpleperf_unit_test && python test.py.
Change-Id: I8ecf7ba2c0f58c131c261c1b4546f4916aea1f82
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