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+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// 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.
+
+// Author: kenton@google.com (Kenton Varda)
+
+#include <google/protobuf/stubs/common.h>
+#include <google/protobuf/stubs/once.h>
+#include <google/protobuf/stubs/status.h>
+#include <google/protobuf/stubs/stringpiece.h>
+#include <google/protobuf/stubs/strutil.h>
+#include <google/protobuf/stubs/int128.h>
+#include <errno.h>
+#include <sstream>
+#include <stdio.h>
+#include <vector>
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN // We only need minimal includes
+#include <windows.h>
+#define snprintf _snprintf // see comment in strutil.cc
+#elif defined(HAVE_PTHREAD)
+#include <pthread.h>
+#else
+#error "No suitable threading library available."
+#endif
+#if defined(__ANDROID__)
+#include <android/log.h>
+#endif
+
+namespace google {
+namespace protobuf {
+
+namespace internal {
+
+void VerifyVersion(int headerVersion,
+ int minLibraryVersion,
+ const char* filename) {
+ if (GOOGLE_PROTOBUF_VERSION < minLibraryVersion) {
+ // Library is too old for headers.
+ GOOGLE_LOG(FATAL)
+ << "This program requires version " << VersionString(minLibraryVersion)
+ << " of the Protocol Buffer runtime library, but the installed version "
+ "is " << VersionString(GOOGLE_PROTOBUF_VERSION) << ". Please update "
+ "your library. If you compiled the program yourself, make sure that "
+ "your headers are from the same version of Protocol Buffers as your "
+ "link-time library. (Version verification failed in \""
+ << filename << "\".)";
+ }
+ if (headerVersion < kMinHeaderVersionForLibrary) {
+ // Headers are too old for library.
+ GOOGLE_LOG(FATAL)
+ << "This program was compiled against version "
+ << VersionString(headerVersion) << " of the Protocol Buffer runtime "
+ "library, which is not compatible with the installed version ("
+ << VersionString(GOOGLE_PROTOBUF_VERSION) << "). Contact the program "
+ "author for an update. If you compiled the program yourself, make "
+ "sure that your headers are from the same version of Protocol Buffers "
+ "as your link-time library. (Version verification failed in \""
+ << filename << "\".)";
+ }
+}
+
+string VersionString(int version) {
+ int major = version / 1000000;
+ int minor = (version / 1000) % 1000;
+ int micro = version % 1000;
+
+ // 128 bytes should always be enough, but we use snprintf() anyway to be
+ // safe.
+ char buffer[128];
+ snprintf(buffer, sizeof(buffer), "%d.%d.%d", major, minor, micro);
+
+ // Guard against broken MSVC snprintf().
+ buffer[sizeof(buffer)-1] = '\0';
+
+ return buffer;
+}
+
+} // namespace internal
+
+// ===================================================================
+// emulates google3/base/logging.cc
+
+namespace internal {
+#if defined(__ANDROID__)
+inline void DefaultLogHandler(LogLevel level, const char* filename, int line,
+ const string& message) {
+#ifdef GOOGLE_PROTOBUF_MIN_LOG_LEVEL
+ if (level < GOOGLE_PROTOBUF_MIN_LOG_LEVEL) {
+ return;
+ }
+ static const char* level_names[] = {"INFO", "WARNING", "ERROR", "FATAL"};
+
+ static const int android_log_levels[] = {
+ ANDROID_LOG_INFO, // LOG(INFO),
+ ANDROID_LOG_WARN, // LOG(WARNING)
+ ANDROID_LOG_ERROR, // LOG(ERROR)
+ ANDROID_LOG_FATAL, // LOG(FATAL)
+ };
+
+ // Bound the logging level.
+ const int android_log_level = android_log_levels[level];
+ ::std::ostringstream ostr;
+ ostr << "[libprotobuf " << level_names[level] << " " << filename << ":"
+ << line << "] " << message.c_str();
+
+ // Output the log string the Android log at the appropriate level.
+ __android_log_write(android_log_level, "libprotobuf-native",
+ ostr.str().c_str());
+ // Also output to std::cerr.
+ fprintf(stderr, "%s", ostr.str().c_str());
+ fflush(stderr);
+
+ // Indicate termination if needed.
+ if (android_log_level == ANDROID_LOG_FATAL) {
+ __android_log_write(ANDROID_LOG_FATAL, "libprotobuf-native",
+ "terminating.\n");
+ }
+#endif
+}
+#else
+void DefaultLogHandler(LogLevel level, const char* filename, int line,
+ const string& message) {
+ static const char* level_names[] = { "INFO", "WARNING", "ERROR", "FATAL" };
+
+ // We use fprintf() instead of cerr because we want this to work at static
+ // initialization time.
+ fprintf(stderr, "[libprotobuf %s %s:%d] %s\n",
+ level_names[level], filename, line, message.c_str());
+ fflush(stderr); // Needed on MSVC.
+}
+#endif
+
+void NullLogHandler(LogLevel /* level */, const char* /* filename */,
+ int /* line */, const string& /* message */) {
+ // Nothing.
+}
+
+static LogHandler* log_handler_ = &DefaultLogHandler;
+static int log_silencer_count_ = 0;
+
+static Mutex* log_silencer_count_mutex_ = NULL;
+GOOGLE_PROTOBUF_DECLARE_ONCE(log_silencer_count_init_);
+
+void DeleteLogSilencerCount() {
+ delete log_silencer_count_mutex_;
+ log_silencer_count_mutex_ = NULL;
+}
+void InitLogSilencerCount() {
+ log_silencer_count_mutex_ = new Mutex;
+ OnShutdown(&DeleteLogSilencerCount);
+}
+void InitLogSilencerCountOnce() {
+ GoogleOnceInit(&log_silencer_count_init_, &InitLogSilencerCount);
+}
+
+LogMessage& LogMessage::operator<<(const string& value) {
+ message_ += value;
+ return *this;
+}
+
+LogMessage& LogMessage::operator<<(const char* value) {
+ message_ += value;
+ return *this;
+}
+
+LogMessage& LogMessage::operator<<(const StringPiece& value) {
+ message_ += value.ToString();
+ return *this;
+}
+
+LogMessage& LogMessage::operator<<(
+ const ::google::protobuf::util::Status& status) {
+ message_ += status.ToString();
+ return *this;
+}
+
+LogMessage& LogMessage::operator<<(const uint128& value) {
+ std::ostringstream str;
+ str << value;
+ message_ += str.str();
+ return *this;
+}
+
+// Since this is just for logging, we don't care if the current locale changes
+// the results -- in fact, we probably prefer that. So we use snprintf()
+// instead of Simple*toa().
+#undef DECLARE_STREAM_OPERATOR
+#define DECLARE_STREAM_OPERATOR(TYPE, FORMAT) \
+ LogMessage& LogMessage::operator<<(TYPE value) { \
+ /* 128 bytes should be big enough for any of the primitive */ \
+ /* values which we print with this, but well use snprintf() */ \
+ /* anyway to be extra safe. */ \
+ char buffer[128]; \
+ snprintf(buffer, sizeof(buffer), FORMAT, value); \
+ /* Guard against broken MSVC snprintf(). */ \
+ buffer[sizeof(buffer)-1] = '\0'; \
+ message_ += buffer; \
+ return *this; \
+ }
+
+DECLARE_STREAM_OPERATOR(char , "%c" )
+DECLARE_STREAM_OPERATOR(int , "%d" )
+DECLARE_STREAM_OPERATOR(unsigned int , "%u" )
+DECLARE_STREAM_OPERATOR(long , "%ld")
+DECLARE_STREAM_OPERATOR(unsigned long, "%lu")
+DECLARE_STREAM_OPERATOR(double , "%g" )
+DECLARE_STREAM_OPERATOR(void* , "%p" )
+DECLARE_STREAM_OPERATOR(long long , "%" GOOGLE_LL_FORMAT "d")
+DECLARE_STREAM_OPERATOR(unsigned long long, "%" GOOGLE_LL_FORMAT "u")
+#undef DECLARE_STREAM_OPERATOR
+
+LogMessage::LogMessage(LogLevel level, const char* filename, int line)
+ : level_(level), filename_(filename), line_(line) {}
+LogMessage::~LogMessage() {}
+
+void LogMessage::Finish() {
+ bool suppress = false;
+
+ if (level_ != LOGLEVEL_FATAL) {
+ InitLogSilencerCountOnce();
+ MutexLock lock(log_silencer_count_mutex_);
+ suppress = log_silencer_count_ > 0;
+ }
+
+ if (!suppress) {
+ log_handler_(level_, filename_, line_, message_);
+ }
+
+ if (level_ == LOGLEVEL_FATAL) {
+#if PROTOBUF_USE_EXCEPTIONS
+ throw FatalException(filename_, line_, message_);
+#else
+ abort();
+#endif
+ }
+}
+
+void LogFinisher::operator=(LogMessage& other) {
+ other.Finish();
+}
+
+} // namespace internal
+
+LogHandler* SetLogHandler(LogHandler* new_func) {
+ LogHandler* old = internal::log_handler_;
+ if (old == &internal::NullLogHandler) {
+ old = NULL;
+ }
+ if (new_func == NULL) {
+ internal::log_handler_ = &internal::NullLogHandler;
+ } else {
+ internal::log_handler_ = new_func;
+ }
+ return old;
+}
+
+LogSilencer::LogSilencer() {
+ internal::InitLogSilencerCountOnce();
+ MutexLock lock(internal::log_silencer_count_mutex_);
+ ++internal::log_silencer_count_;
+};
+
+LogSilencer::~LogSilencer() {
+ internal::InitLogSilencerCountOnce();
+ MutexLock lock(internal::log_silencer_count_mutex_);
+ --internal::log_silencer_count_;
+};
+
+// ===================================================================
+// emulates google3/base/callback.cc
+
+Closure::~Closure() {}
+
+namespace internal { FunctionClosure0::~FunctionClosure0() {} }
+
+void DoNothing() {}
+
+// ===================================================================
+// emulates google3/base/mutex.cc
+
+#ifdef _WIN32
+
+struct Mutex::Internal {
+ CRITICAL_SECTION mutex;
+#ifndef NDEBUG
+ // Used only to implement AssertHeld().
+ DWORD thread_id;
+#endif
+};
+
+Mutex::Mutex()
+ : mInternal(new Internal) {
+ InitializeCriticalSection(&mInternal->mutex);
+}
+
+Mutex::~Mutex() {
+ DeleteCriticalSection(&mInternal->mutex);
+ delete mInternal;
+}
+
+void Mutex::Lock() {
+ EnterCriticalSection(&mInternal->mutex);
+#ifndef NDEBUG
+ mInternal->thread_id = GetCurrentThreadId();
+#endif
+}
+
+void Mutex::Unlock() {
+#ifndef NDEBUG
+ mInternal->thread_id = 0;
+#endif
+ LeaveCriticalSection(&mInternal->mutex);
+}
+
+void Mutex::AssertHeld() {
+#ifndef NDEBUG
+ GOOGLE_DCHECK_EQ(mInternal->thread_id, GetCurrentThreadId());
+#endif
+}
+
+#elif defined(HAVE_PTHREAD)
+
+struct Mutex::Internal {
+ pthread_mutex_t mutex;
+};
+
+Mutex::Mutex()
+ : mInternal(new Internal) {
+ pthread_mutex_init(&mInternal->mutex, NULL);
+}
+
+Mutex::~Mutex() {
+ pthread_mutex_destroy(&mInternal->mutex);
+ delete mInternal;
+}
+
+void Mutex::Lock() {
+ int result = pthread_mutex_lock(&mInternal->mutex);
+ if (result != 0) {
+ GOOGLE_LOG(FATAL) << "pthread_mutex_lock: " << strerror(result);
+ }
+}
+
+void Mutex::Unlock() {
+ int result = pthread_mutex_unlock(&mInternal->mutex);
+ if (result != 0) {
+ GOOGLE_LOG(FATAL) << "pthread_mutex_unlock: " << strerror(result);
+ }
+}
+
+void Mutex::AssertHeld() {
+ // pthreads dosn't provide a way to check which thread holds the mutex.
+ // TODO(kenton): Maybe keep track of locking thread ID like with WIN32?
+}
+
+#endif
+
+// ===================================================================
+// emulates google3/util/endian/endian.h
+//
+// TODO(xiaofeng): PROTOBUF_LITTLE_ENDIAN is unfortunately defined in
+// google/protobuf/io/coded_stream.h and therefore can not be used here.
+// Maybe move that macro definition here in the furture.
+uint32 ghtonl(uint32 x) {
+ union {
+ uint32 result;
+ uint8 result_array[4];
+ };
+ result_array[0] = static_cast<uint8>(x >> 24);
+ result_array[1] = static_cast<uint8>((x >> 16) & 0xFF);
+ result_array[2] = static_cast<uint8>((x >> 8) & 0xFF);
+ result_array[3] = static_cast<uint8>(x & 0xFF);
+ return result;
+}
+
+// ===================================================================
+// Shutdown support.
+
+namespace internal {
+
+typedef void OnShutdownFunc();
+vector<void (*)()>* shutdown_functions = NULL;
+Mutex* shutdown_functions_mutex = NULL;
+GOOGLE_PROTOBUF_DECLARE_ONCE(shutdown_functions_init);
+
+void InitShutdownFunctions() {
+ shutdown_functions = new vector<void (*)()>;
+ shutdown_functions_mutex = new Mutex;
+}
+
+inline void InitShutdownFunctionsOnce() {
+ GoogleOnceInit(&shutdown_functions_init, &InitShutdownFunctions);
+}
+
+void OnShutdown(void (*func)()) {
+ InitShutdownFunctionsOnce();
+ MutexLock lock(shutdown_functions_mutex);
+ shutdown_functions->push_back(func);
+}
+
+} // namespace internal
+
+void ShutdownProtobufLibrary() {
+ internal::InitShutdownFunctionsOnce();
+
+ // We don't need to lock shutdown_functions_mutex because it's up to the
+ // caller to make sure that no one is using the library before this is
+ // called.
+
+ // Make it safe to call this multiple times.
+ if (internal::shutdown_functions == NULL) return;
+
+ for (int i = 0; i < internal::shutdown_functions->size(); i++) {
+ internal::shutdown_functions->at(i)();
+ }
+ delete internal::shutdown_functions;
+ internal::shutdown_functions = NULL;
+ delete internal::shutdown_functions_mutex;
+ internal::shutdown_functions_mutex = NULL;
+}
+
+#if PROTOBUF_USE_EXCEPTIONS
+FatalException::~FatalException() throw() {}
+
+const char* FatalException::what() const throw() {
+ return message_.c_str();
+}
+#endif
+
+} // namespace protobuf
+} // namespace google
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