Merge from Chromium at DEPS revision r167172
This commit was generated by merge_to_master.py.
Change-Id: Ib8d56fd5ae39a2d7e8c91dcd76cc6d13f25f2aab
diff --git a/base/logging.cc b/base/logging.cc
new file mode 100644
index 0000000..7f9caff
--- /dev/null
+++ b/base/logging.cc
@@ -0,0 +1,861 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/logging.h"
+
+#if defined(OS_WIN)
+#include <io.h>
+#include <windows.h>
+typedef HANDLE FileHandle;
+typedef HANDLE MutexHandle;
+// Windows warns on using write(). It prefers _write().
+#define write(fd, buf, count) _write(fd, buf, static_cast<unsigned int>(count))
+// Windows doesn't define STDERR_FILENO. Define it here.
+#define STDERR_FILENO 2
+#elif defined(OS_MACOSX)
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#include <mach-o/dyld.h>
+#elif defined(OS_POSIX)
+#if defined(OS_NACL)
+#include <sys/time.h> // timespec doesn't seem to be in <time.h>
+#else
+#include <sys/syscall.h>
+#endif
+#include <time.h>
+#endif
+
+#if defined(OS_POSIX)
+#include <errno.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#define MAX_PATH PATH_MAX
+typedef FILE* FileHandle;
+typedef pthread_mutex_t* MutexHandle;
+#endif
+
+#include <algorithm>
+#include <cstring>
+#include <ctime>
+#include <iomanip>
+#include <ostream>
+
+#include "base/base_switches.h"
+#include "base/command_line.h"
+#include "base/debug/alias.h"
+#include "base/debug/debugger.h"
+#include "base/debug/stack_trace.h"
+#include "base/eintr_wrapper.h"
+#include "base/string_piece.h"
+#include "base/synchronization/lock_impl.h"
+#include "base/threading/platform_thread.h"
+#include "base/utf_string_conversions.h"
+#include "base/vlog.h"
+#if defined(OS_POSIX)
+#include "base/safe_strerror_posix.h"
+#endif
+
+#if defined(OS_ANDROID)
+#include <android/log.h>
+#endif
+
+namespace logging {
+
+DcheckState g_dcheck_state = DISABLE_DCHECK_FOR_NON_OFFICIAL_RELEASE_BUILDS;
+
+namespace {
+
+VlogInfo* g_vlog_info = NULL;
+VlogInfo* g_vlog_info_prev = NULL;
+
+const char* const log_severity_names[LOG_NUM_SEVERITIES] = {
+ "INFO", "WARNING", "ERROR", "ERROR_REPORT", "FATAL" };
+
+int min_log_level = 0;
+
+// The default set here for logging_destination will only be used if
+// InitLogging is not called. On Windows, use a file next to the exe;
+// on POSIX platforms, where it may not even be possible to locate the
+// executable on disk, use stderr.
+#if defined(OS_WIN)
+LoggingDestination logging_destination = LOG_ONLY_TO_FILE;
+#elif defined(OS_POSIX)
+LoggingDestination logging_destination = LOG_ONLY_TO_SYSTEM_DEBUG_LOG;
+#endif
+
+// For LOG_ERROR and above, always print to stderr.
+const int kAlwaysPrintErrorLevel = LOG_ERROR;
+
+// Which log file to use? This is initialized by InitLogging or
+// will be lazily initialized to the default value when it is
+// first needed.
+#if defined(OS_WIN)
+typedef std::wstring PathString;
+#else
+typedef std::string PathString;
+#endif
+PathString* log_file_name = NULL;
+
+// this file is lazily opened and the handle may be NULL
+FileHandle log_file = NULL;
+
+// what should be prepended to each message?
+bool log_process_id = false;
+bool log_thread_id = false;
+bool log_timestamp = true;
+bool log_tickcount = false;
+
+// Should we pop up fatal debug messages in a dialog?
+bool show_error_dialogs = false;
+
+// An assert handler override specified by the client to be called instead of
+// the debug message dialog and process termination.
+LogAssertHandlerFunction log_assert_handler = NULL;
+// An report handler override specified by the client to be called instead of
+// the debug message dialog.
+LogReportHandlerFunction log_report_handler = NULL;
+// A log message handler that gets notified of every log message we process.
+LogMessageHandlerFunction log_message_handler = NULL;
+
+// Helper functions to wrap platform differences.
+
+int32 CurrentProcessId() {
+#if defined(OS_WIN)
+ return GetCurrentProcessId();
+#elif defined(OS_POSIX)
+ return getpid();
+#endif
+}
+
+uint64 TickCount() {
+#if defined(OS_WIN)
+ return GetTickCount();
+#elif defined(OS_MACOSX)
+ return mach_absolute_time();
+#elif defined(OS_NACL)
+ // NaCl sadly does not have _POSIX_TIMERS enabled in sys/features.h
+ // So we have to use clock() for now.
+ return clock();
+#elif defined(OS_POSIX)
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+
+ uint64 absolute_micro =
+ static_cast<int64>(ts.tv_sec) * 1000000 +
+ static_cast<int64>(ts.tv_nsec) / 1000;
+
+ return absolute_micro;
+#endif
+}
+
+void CloseFile(FileHandle log) {
+#if defined(OS_WIN)
+ CloseHandle(log);
+#else
+ fclose(log);
+#endif
+}
+
+void DeleteFilePath(const PathString& log_name) {
+#if defined(OS_WIN)
+ DeleteFile(log_name.c_str());
+#else
+ unlink(log_name.c_str());
+#endif
+}
+
+PathString GetDefaultLogFile() {
+#if defined(OS_WIN)
+ // On Windows we use the same path as the exe.
+ wchar_t module_name[MAX_PATH];
+ GetModuleFileName(NULL, module_name, MAX_PATH);
+
+ PathString log_file = module_name;
+ PathString::size_type last_backslash =
+ log_file.rfind('\\', log_file.size());
+ if (last_backslash != PathString::npos)
+ log_file.erase(last_backslash + 1);
+ log_file += L"debug.log";
+ return log_file;
+#elif defined(OS_POSIX)
+ // On other platforms we just use the current directory.
+ return PathString("debug.log");
+#endif
+}
+
+// This class acts as a wrapper for locking the logging files.
+// LoggingLock::Init() should be called from the main thread before any logging
+// is done. Then whenever logging, be sure to have a local LoggingLock
+// instance on the stack. This will ensure that the lock is unlocked upon
+// exiting the frame.
+// LoggingLocks can not be nested.
+class LoggingLock {
+ public:
+ LoggingLock() {
+ LockLogging();
+ }
+
+ ~LoggingLock() {
+ UnlockLogging();
+ }
+
+ static void Init(LogLockingState lock_log, const PathChar* new_log_file) {
+ if (initialized)
+ return;
+ lock_log_file = lock_log;
+ if (lock_log_file == LOCK_LOG_FILE) {
+#if defined(OS_WIN)
+ if (!log_mutex) {
+ std::wstring safe_name;
+ if (new_log_file)
+ safe_name = new_log_file;
+ else
+ safe_name = GetDefaultLogFile();
+ // \ is not a legal character in mutex names so we replace \ with /
+ std::replace(safe_name.begin(), safe_name.end(), '\\', '/');
+ std::wstring t(L"Global\\");
+ t.append(safe_name);
+ log_mutex = ::CreateMutex(NULL, FALSE, t.c_str());
+
+ if (log_mutex == NULL) {
+#if DEBUG
+ // Keep the error code for debugging
+ int error = GetLastError(); // NOLINT
+ base::debug::BreakDebugger();
+#endif
+ // Return nicely without putting initialized to true.
+ return;
+ }
+ }
+#endif
+ } else {
+ log_lock = new base::internal::LockImpl();
+ }
+ initialized = true;
+ }
+
+ private:
+ static void LockLogging() {
+ if (lock_log_file == LOCK_LOG_FILE) {
+#if defined(OS_WIN)
+ ::WaitForSingleObject(log_mutex, INFINITE);
+ // WaitForSingleObject could have returned WAIT_ABANDONED. We don't
+ // abort the process here. UI tests might be crashy sometimes,
+ // and aborting the test binary only makes the problem worse.
+ // We also don't use LOG macros because that might lead to an infinite
+ // loop. For more info see http://crbug.com/18028.
+#elif defined(OS_POSIX)
+ pthread_mutex_lock(&log_mutex);
+#endif
+ } else {
+ // use the lock
+ log_lock->Lock();
+ }
+ }
+
+ static void UnlockLogging() {
+ if (lock_log_file == LOCK_LOG_FILE) {
+#if defined(OS_WIN)
+ ReleaseMutex(log_mutex);
+#elif defined(OS_POSIX)
+ pthread_mutex_unlock(&log_mutex);
+#endif
+ } else {
+ log_lock->Unlock();
+ }
+ }
+
+ // The lock is used if log file locking is false. It helps us avoid problems
+ // with multiple threads writing to the log file at the same time. Use
+ // LockImpl directly instead of using Lock, because Lock makes logging calls.
+ static base::internal::LockImpl* log_lock;
+
+ // When we don't use a lock, we are using a global mutex. We need to do this
+ // because LockFileEx is not thread safe.
+#if defined(OS_WIN)
+ static MutexHandle log_mutex;
+#elif defined(OS_POSIX)
+ static pthread_mutex_t log_mutex;
+#endif
+
+ static bool initialized;
+ static LogLockingState lock_log_file;
+};
+
+// static
+bool LoggingLock::initialized = false;
+// static
+base::internal::LockImpl* LoggingLock::log_lock = NULL;
+// static
+LogLockingState LoggingLock::lock_log_file = LOCK_LOG_FILE;
+
+#if defined(OS_WIN)
+// static
+MutexHandle LoggingLock::log_mutex = NULL;
+#elif defined(OS_POSIX)
+pthread_mutex_t LoggingLock::log_mutex = PTHREAD_MUTEX_INITIALIZER;
+#endif
+
+// Called by logging functions to ensure that debug_file is initialized
+// and can be used for writing. Returns false if the file could not be
+// initialized. debug_file will be NULL in this case.
+bool InitializeLogFileHandle() {
+ if (log_file)
+ return true;
+
+ if (!log_file_name) {
+ // Nobody has called InitLogging to specify a debug log file, so here we
+ // initialize the log file name to a default.
+ log_file_name = new PathString(GetDefaultLogFile());
+ }
+
+ if (logging_destination == LOG_ONLY_TO_FILE ||
+ logging_destination == LOG_TO_BOTH_FILE_AND_SYSTEM_DEBUG_LOG) {
+#if defined(OS_WIN)
+ log_file = CreateFile(log_file_name->c_str(), GENERIC_WRITE,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+ OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+ if (log_file == INVALID_HANDLE_VALUE || log_file == NULL) {
+ // try the current directory
+ log_file = CreateFile(L".\\debug.log", GENERIC_WRITE,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+ OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+ if (log_file == INVALID_HANDLE_VALUE || log_file == NULL) {
+ log_file = NULL;
+ return false;
+ }
+ }
+ SetFilePointer(log_file, 0, 0, FILE_END);
+#elif defined(OS_POSIX)
+ log_file = fopen(log_file_name->c_str(), "a");
+ if (log_file == NULL)
+ return false;
+#endif
+ }
+
+ return true;
+}
+
+} // namespace
+
+
+bool BaseInitLoggingImpl(const PathChar* new_log_file,
+ LoggingDestination logging_dest,
+ LogLockingState lock_log,
+ OldFileDeletionState delete_old,
+ DcheckState dcheck_state) {
+ g_dcheck_state = dcheck_state;
+// TODO(bbudge) Hook this up to NaCl logging.
+#if !defined(OS_NACL)
+ CommandLine* command_line = CommandLine::ForCurrentProcess();
+ // Don't bother initializing g_vlog_info unless we use one of the
+ // vlog switches.
+ if (command_line->HasSwitch(switches::kV) ||
+ command_line->HasSwitch(switches::kVModule)) {
+ // NOTE: If g_vlog_info has already been initialized, it might be in use
+ // by another thread. Don't delete the old VLogInfo, just create a second
+ // one. We keep track of both to avoid memory leak warnings.
+ CHECK(!g_vlog_info_prev);
+ g_vlog_info_prev = g_vlog_info;
+
+ g_vlog_info =
+ new VlogInfo(command_line->GetSwitchValueASCII(switches::kV),
+ command_line->GetSwitchValueASCII(switches::kVModule),
+ &min_log_level);
+ }
+
+ LoggingLock::Init(lock_log, new_log_file);
+
+ LoggingLock logging_lock;
+
+ if (log_file) {
+ // calling InitLogging twice or after some log call has already opened the
+ // default log file will re-initialize to the new options
+ CloseFile(log_file);
+ log_file = NULL;
+ }
+
+ logging_destination = logging_dest;
+
+ // ignore file options if logging is disabled or only to system
+ if (logging_destination == LOG_NONE ||
+ logging_destination == LOG_ONLY_TO_SYSTEM_DEBUG_LOG)
+ return true;
+
+ if (!log_file_name)
+ log_file_name = new PathString();
+ *log_file_name = new_log_file;
+ if (delete_old == DELETE_OLD_LOG_FILE)
+ DeleteFilePath(*log_file_name);
+
+ return InitializeLogFileHandle();
+#else
+ (void) g_vlog_info_prev;
+ return true;
+#endif // !defined(OS_NACL)
+}
+
+void SetMinLogLevel(int level) {
+ min_log_level = std::min(LOG_ERROR_REPORT, level);
+}
+
+int GetMinLogLevel() {
+ return min_log_level;
+}
+
+int GetVlogVerbosity() {
+ return std::max(-1, LOG_INFO - GetMinLogLevel());
+}
+
+int GetVlogLevelHelper(const char* file, size_t N) {
+ DCHECK_GT(N, 0U);
+ // Note: g_vlog_info may change on a different thread during startup
+ // (but will always be valid or NULL).
+ VlogInfo* vlog_info = g_vlog_info;
+ return vlog_info ?
+ vlog_info->GetVlogLevel(base::StringPiece(file, N - 1)) :
+ GetVlogVerbosity();
+}
+
+void SetLogItems(bool enable_process_id, bool enable_thread_id,
+ bool enable_timestamp, bool enable_tickcount) {
+ log_process_id = enable_process_id;
+ log_thread_id = enable_thread_id;
+ log_timestamp = enable_timestamp;
+ log_tickcount = enable_tickcount;
+}
+
+void SetShowErrorDialogs(bool enable_dialogs) {
+ show_error_dialogs = enable_dialogs;
+}
+
+void SetLogAssertHandler(LogAssertHandlerFunction handler) {
+ log_assert_handler = handler;
+}
+
+void SetLogReportHandler(LogReportHandlerFunction handler) {
+ log_report_handler = handler;
+}
+
+void SetLogMessageHandler(LogMessageHandlerFunction handler) {
+ log_message_handler = handler;
+}
+
+LogMessageHandlerFunction GetLogMessageHandler() {
+ return log_message_handler;
+}
+
+// MSVC doesn't like complex extern templates and DLLs.
+#if !defined(COMPILER_MSVC)
+// Explicit instantiations for commonly used comparisons.
+template std::string* MakeCheckOpString<int, int>(
+ const int&, const int&, const char* names);
+template std::string* MakeCheckOpString<unsigned long, unsigned long>(
+ const unsigned long&, const unsigned long&, const char* names);
+template std::string* MakeCheckOpString<unsigned long, unsigned int>(
+ const unsigned long&, const unsigned int&, const char* names);
+template std::string* MakeCheckOpString<unsigned int, unsigned long>(
+ const unsigned int&, const unsigned long&, const char* names);
+template std::string* MakeCheckOpString<std::string, std::string>(
+ const std::string&, const std::string&, const char* name);
+#endif
+
+// Displays a message box to the user with the error message in it.
+// Used for fatal messages, where we close the app simultaneously.
+// This is for developers only; we don't use this in circumstances
+// (like release builds) where users could see it, since users don't
+// understand these messages anyway.
+void DisplayDebugMessageInDialog(const std::string& str) {
+ if (str.empty())
+ return;
+
+ if (!show_error_dialogs)
+ return;
+
+#if defined(OS_WIN)
+ // For Windows programs, it's possible that the message loop is
+ // messed up on a fatal error, and creating a MessageBox will cause
+ // that message loop to be run. Instead, we try to spawn another
+ // process that displays its command line. We look for "Debug
+ // Message.exe" in the same directory as the application. If it
+ // exists, we use it, otherwise, we use a regular message box.
+ wchar_t prog_name[MAX_PATH];
+ GetModuleFileNameW(NULL, prog_name, MAX_PATH);
+ wchar_t* backslash = wcsrchr(prog_name, '\\');
+ if (backslash)
+ backslash[1] = 0;
+ wcscat_s(prog_name, MAX_PATH, L"debug_message.exe");
+
+ std::wstring cmdline = UTF8ToWide(str);
+ if (cmdline.empty())
+ return;
+
+ STARTUPINFO startup_info;
+ memset(&startup_info, 0, sizeof(startup_info));
+ startup_info.cb = sizeof(startup_info);
+
+ PROCESS_INFORMATION process_info;
+ if (CreateProcessW(prog_name, &cmdline[0], NULL, NULL, false, 0, NULL,
+ NULL, &startup_info, &process_info)) {
+ WaitForSingleObject(process_info.hProcess, INFINITE);
+ CloseHandle(process_info.hThread);
+ CloseHandle(process_info.hProcess);
+ } else {
+ // debug process broken, let's just do a message box
+ MessageBoxW(NULL, &cmdline[0], L"Fatal error",
+ MB_OK | MB_ICONHAND | MB_TOPMOST);
+ }
+#else
+ // We intentionally don't implement a dialog on other platforms.
+ // You can just look at stderr.
+#endif
+}
+
+#if defined(OS_WIN)
+LogMessage::SaveLastError::SaveLastError() : last_error_(::GetLastError()) {
+}
+
+LogMessage::SaveLastError::~SaveLastError() {
+ ::SetLastError(last_error_);
+}
+#endif // defined(OS_WIN)
+
+LogMessage::LogMessage(const char* file, int line, LogSeverity severity,
+ int ctr)
+ : severity_(severity), file_(file), line_(line) {
+ Init(file, line);
+}
+
+LogMessage::LogMessage(const char* file, int line)
+ : severity_(LOG_INFO), file_(file), line_(line) {
+ Init(file, line);
+}
+
+LogMessage::LogMessage(const char* file, int line, LogSeverity severity)
+ : severity_(severity), file_(file), line_(line) {
+ Init(file, line);
+}
+
+LogMessage::LogMessage(const char* file, int line, std::string* result)
+ : severity_(LOG_FATAL), file_(file), line_(line) {
+ Init(file, line);
+ stream_ << "Check failed: " << *result;
+ delete result;
+}
+
+LogMessage::LogMessage(const char* file, int line, LogSeverity severity,
+ std::string* result)
+ : severity_(severity), file_(file), line_(line) {
+ Init(file, line);
+ stream_ << "Check failed: " << *result;
+ delete result;
+}
+
+LogMessage::~LogMessage() {
+ // TODO(port): enable stacktrace generation on LOG_FATAL once backtrace are
+ // working in Android.
+#if !defined(NDEBUG) && !defined(OS_ANDROID) && !defined(OS_NACL)
+ if (severity_ == LOG_FATAL) {
+ // Include a stack trace on a fatal.
+ base::debug::StackTrace trace;
+ stream_ << std::endl; // Newline to separate from log message.
+ trace.OutputToStream(&stream_);
+ }
+#endif
+ stream_ << std::endl;
+ std::string str_newline(stream_.str());
+
+ // Give any log message handler first dibs on the message.
+ if (log_message_handler && log_message_handler(severity_, file_, line_,
+ message_start_, str_newline)) {
+ // The handler took care of it, no further processing.
+ return;
+ }
+
+ if (logging_destination == LOG_ONLY_TO_SYSTEM_DEBUG_LOG ||
+ logging_destination == LOG_TO_BOTH_FILE_AND_SYSTEM_DEBUG_LOG) {
+#if defined(OS_WIN)
+ OutputDebugStringA(str_newline.c_str());
+#elif defined(OS_ANDROID)
+ android_LogPriority priority = ANDROID_LOG_UNKNOWN;
+ switch (severity_) {
+ case LOG_INFO:
+ priority = ANDROID_LOG_INFO;
+ break;
+ case LOG_WARNING:
+ priority = ANDROID_LOG_WARN;
+ break;
+ case LOG_ERROR:
+ case LOG_ERROR_REPORT:
+ priority = ANDROID_LOG_ERROR;
+ break;
+ case LOG_FATAL:
+ priority = ANDROID_LOG_FATAL;
+ break;
+ }
+ __android_log_write(priority, "chromium", str_newline.c_str());
+#endif
+ fprintf(stderr, "%s", str_newline.c_str());
+ fflush(stderr);
+ } else if (severity_ >= kAlwaysPrintErrorLevel) {
+ // When we're only outputting to a log file, above a certain log level, we
+ // should still output to stderr so that we can better detect and diagnose
+ // problems with unit tests, especially on the buildbots.
+ fprintf(stderr, "%s", str_newline.c_str());
+ fflush(stderr);
+ }
+
+ // We can have multiple threads and/or processes, so try to prevent them
+ // from clobbering each other's writes.
+ // If the client app did not call InitLogging, and the lock has not
+ // been created do it now. We do this on demand, but if two threads try
+ // to do this at the same time, there will be a race condition to create
+ // the lock. This is why InitLogging should be called from the main
+ // thread at the beginning of execution.
+ LoggingLock::Init(LOCK_LOG_FILE, NULL);
+ // write to log file
+ if (logging_destination != LOG_NONE &&
+ logging_destination != LOG_ONLY_TO_SYSTEM_DEBUG_LOG) {
+ LoggingLock logging_lock;
+ if (InitializeLogFileHandle()) {
+#if defined(OS_WIN)
+ SetFilePointer(log_file, 0, 0, SEEK_END);
+ DWORD num_written;
+ WriteFile(log_file,
+ static_cast<const void*>(str_newline.c_str()),
+ static_cast<DWORD>(str_newline.length()),
+ &num_written,
+ NULL);
+#else
+ fprintf(log_file, "%s", str_newline.c_str());
+ fflush(log_file);
+#endif
+ }
+ }
+
+ if (severity_ == LOG_FATAL) {
+ // Ensure the first characters of the string are on the stack so they
+ // are contained in minidumps for diagnostic purposes.
+ char str_stack[1024];
+ str_newline.copy(str_stack, arraysize(str_stack));
+ base::debug::Alias(str_stack);
+
+ // display a message or break into the debugger on a fatal error
+ if (base::debug::BeingDebugged()) {
+ base::debug::BreakDebugger();
+ } else {
+ if (log_assert_handler) {
+ // make a copy of the string for the handler out of paranoia
+ log_assert_handler(std::string(stream_.str()));
+ } else {
+ // Don't use the string with the newline, get a fresh version to send to
+ // the debug message process. We also don't display assertions to the
+ // user in release mode. The enduser can't do anything with this
+ // information, and displaying message boxes when the application is
+ // hosed can cause additional problems.
+#ifndef NDEBUG
+ DisplayDebugMessageInDialog(stream_.str());
+#endif
+ // Crash the process to generate a dump.
+ base::debug::BreakDebugger();
+ }
+ }
+ } else if (severity_ == LOG_ERROR_REPORT) {
+ // We are here only if the user runs with --enable-dcheck in release mode.
+ if (log_report_handler) {
+ log_report_handler(std::string(stream_.str()));
+ } else {
+ DisplayDebugMessageInDialog(stream_.str());
+ }
+ }
+}
+
+// writes the common header info to the stream
+void LogMessage::Init(const char* file, int line) {
+ base::StringPiece filename(file);
+ size_t last_slash_pos = filename.find_last_of("\\/");
+ if (last_slash_pos != base::StringPiece::npos)
+ filename.remove_prefix(last_slash_pos + 1);
+
+ // TODO(darin): It might be nice if the columns were fixed width.
+
+ stream_ << '[';
+ if (log_process_id)
+ stream_ << CurrentProcessId() << ':';
+ if (log_thread_id)
+ stream_ << base::PlatformThread::CurrentId() << ':';
+ if (log_timestamp) {
+ time_t t = time(NULL);
+ struct tm local_time = {0};
+#if _MSC_VER >= 1400
+ localtime_s(&local_time, &t);
+#else
+ localtime_r(&t, &local_time);
+#endif
+ struct tm* tm_time = &local_time;
+ stream_ << std::setfill('0')
+ << std::setw(2) << 1 + tm_time->tm_mon
+ << std::setw(2) << tm_time->tm_mday
+ << '/'
+ << std::setw(2) << tm_time->tm_hour
+ << std::setw(2) << tm_time->tm_min
+ << std::setw(2) << tm_time->tm_sec
+ << ':';
+ }
+ if (log_tickcount)
+ stream_ << TickCount() << ':';
+ if (severity_ >= 0)
+ stream_ << log_severity_names[severity_];
+ else
+ stream_ << "VERBOSE" << -severity_;
+
+ stream_ << ":" << filename << "(" << line << ")] ";
+
+ message_start_ = stream_.tellp();
+}
+
+#if defined(OS_WIN)
+// This has already been defined in the header, but defining it again as DWORD
+// ensures that the type used in the header is equivalent to DWORD. If not,
+// the redefinition is a compile error.
+typedef DWORD SystemErrorCode;
+#endif
+
+SystemErrorCode GetLastSystemErrorCode() {
+#if defined(OS_WIN)
+ return ::GetLastError();
+#elif defined(OS_POSIX)
+ return errno;
+#else
+#error Not implemented
+#endif
+}
+
+#if defined(OS_WIN)
+Win32ErrorLogMessage::Win32ErrorLogMessage(const char* file,
+ int line,
+ LogSeverity severity,
+ SystemErrorCode err,
+ const char* module)
+ : err_(err),
+ module_(module),
+ log_message_(file, line, severity) {
+}
+
+Win32ErrorLogMessage::Win32ErrorLogMessage(const char* file,
+ int line,
+ LogSeverity severity,
+ SystemErrorCode err)
+ : err_(err),
+ module_(NULL),
+ log_message_(file, line, severity) {
+}
+
+Win32ErrorLogMessage::~Win32ErrorLogMessage() {
+ const int error_message_buffer_size = 256;
+ char msgbuf[error_message_buffer_size];
+ DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
+ HMODULE hmod;
+ if (module_) {
+ hmod = GetModuleHandleA(module_);
+ if (hmod) {
+ flags |= FORMAT_MESSAGE_FROM_HMODULE;
+ } else {
+ // This makes a nested Win32ErrorLogMessage. It will have module_ of NULL
+ // so it will not call GetModuleHandle, so recursive errors are
+ // impossible.
+ DPLOG(WARNING) << "Couldn't open module " << module_
+ << " for error message query";
+ }
+ } else {
+ hmod = NULL;
+ }
+ DWORD len = FormatMessageA(flags,
+ hmod,
+ err_,
+ 0,
+ msgbuf,
+ sizeof(msgbuf) / sizeof(msgbuf[0]),
+ NULL);
+ if (len) {
+ while ((len > 0) &&
+ isspace(static_cast<unsigned char>(msgbuf[len - 1]))) {
+ msgbuf[--len] = 0;
+ }
+ stream() << ": " << msgbuf;
+ } else {
+ stream() << ": Error " << GetLastError() << " while retrieving error "
+ << err_;
+ }
+ // We're about to crash (CHECK). Put |err_| on the stack (by placing it in a
+ // field) and use Alias in hopes that it makes it into crash dumps.
+ DWORD last_error = err_;
+ base::debug::Alias(&last_error);
+}
+#elif defined(OS_POSIX)
+ErrnoLogMessage::ErrnoLogMessage(const char* file,
+ int line,
+ LogSeverity severity,
+ SystemErrorCode err)
+ : err_(err),
+ log_message_(file, line, severity) {
+}
+
+ErrnoLogMessage::~ErrnoLogMessage() {
+ stream() << ": " << safe_strerror(err_);
+}
+#endif // OS_WIN
+
+void CloseLogFile() {
+ LoggingLock logging_lock;
+
+ if (!log_file)
+ return;
+
+ CloseFile(log_file);
+ log_file = NULL;
+}
+
+void RawLog(int level, const char* message) {
+ if (level >= min_log_level) {
+ size_t bytes_written = 0;
+ const size_t message_len = strlen(message);
+ int rv;
+ while (bytes_written < message_len) {
+ rv = HANDLE_EINTR(
+ write(STDERR_FILENO, message + bytes_written,
+ message_len - bytes_written));
+ if (rv < 0) {
+ // Give up, nothing we can do now.
+ break;
+ }
+ bytes_written += rv;
+ }
+
+ if (message_len > 0 && message[message_len - 1] != '\n') {
+ do {
+ rv = HANDLE_EINTR(write(STDERR_FILENO, "\n", 1));
+ if (rv < 0) {
+ // Give up, nothing we can do now.
+ break;
+ }
+ } while (rv != 1);
+ }
+ }
+
+ if (level == LOG_FATAL)
+ base::debug::BreakDebugger();
+}
+
+// This was defined at the beginning of this file.
+#undef write
+
+} // namespace logging
+
+std::ostream& operator<<(std::ostream& out, const wchar_t* wstr) {
+ return out << WideToUTF8(std::wstring(wstr));
+}