-//
-// Copyright (C) 1999 and onwards Google, Inc.
+// Copyright (c) 1999, 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.
//
// Author: Ray Sidney
//
#include <errno.h>
#include <string.h>
#include <time.h>
+#include <iosfwd>
+#include <ostream>
+#include <sstream>
#include <string>
#if @ac_cv_have_unistd_h@
# include <unistd.h>
#endif
-#ifdef __DEPRECATED
-// Make GCC quiet.
-# undef __DEPRECATED
-# include <strstream>
-# define __DEPRECATED
+#include <vector>
+
+#if defined(_MSC_VER)
+#define GLOG_MSVC_PUSH_DISABLE_WARNING(n) __pragma(warning(push)) \
+ __pragma(warning(disable:n))
+#define GLOG_MSVC_POP_WARNING() __pragma(warning(pop))
#else
-# include <strstream>
+#define GLOG_MSVC_PUSH_DISABLE_WARNING(n)
+#define GLOG_MSVC_POP_WARNING()
#endif
-#include <vector>
// Annoying stuff for windows -- makes sure clients can import these functions
#ifndef GOOGLE_GLOG_DLL_DECL
-# ifdef _WIN32
+# if defined(_WIN32) && !defined(__CYGWIN__)
# define GOOGLE_GLOG_DLL_DECL __declspec(dllimport)
# else
# define GOOGLE_GLOG_DLL_DECL
#endif
#endif
+#ifndef GOOGLE_PREDICT_FALSE
+#if @ac_cv_have___builtin_expect@
+#define GOOGLE_PREDICT_FALSE(x) (__builtin_expect(x, 0))
+#else
+#define GOOGLE_PREDICT_FALSE(x) x
+#endif
+#endif
+
+#ifndef GOOGLE_PREDICT_TRUE
+#if @ac_cv_have___builtin_expect@
+#define GOOGLE_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
+#else
+#define GOOGLE_PREDICT_TRUE(x) x
+#endif
+#endif
+
+
// Make a bunch of macros for logging. The way to log things is to stream
// things to LOG(<a particular severity level>). E.g.,
//
// You can also do occasional logging (log every n'th occurrence of an
// event):
//
-// LOG_EVERY_N(INFO, 10) << "Got the " << COUNTER << "th cookie";
+// LOG_EVERY_N(INFO, 10) << "Got the " << google::COUNTER << "th cookie";
//
// The above will cause log messages to be output on the 1st, 11th, 21st, ...
-// times it is executed. Note that the special COUNTER value is used to
-// identify which repetition is happening.
+// times it is executed. Note that the special google::COUNTER value is used
+// to identify which repetition is happening.
//
// You can also do occasional conditional logging (log every n'th
// occurrence of an event, when condition is satisfied):
//
-// LOG_IF_EVERY_N(INFO, (size > 1024), 10) << "Got the " << COUNTER
+// LOG_IF_EVERY_N(INFO, (size > 1024), 10) << "Got the " << google::COUNTER
// << "th big cookie";
//
// You can log messages the first N times your code executes a line. E.g.
//
-// LOG_FIRST_N(INFO, 20) << "Got the " << COUNTER << "th cookie";
+// LOG_FIRST_N(INFO, 20) << "Got the " << google::COUNTER << "th cookie";
//
// Outputs log messages for the first 20 times it is executed.
//
//
// DLOG_IF(INFO, num_cookies > 10) << "Got lots of cookies";
//
-// DLOG_EVERY_N(INFO, 10) << "Got the " << COUNTER << "th cookie";
+// DLOG_EVERY_N(INFO, 10) << "Got the " << google::COUNTER << "th cookie";
//
// All "debug mode" logging is compiled away to nothing for non-debug mode
// compiles.
// "program with --v=1 or more";
// VLOG_EVERY_N(1, 10)
// << "I'm printed every 10th occurrence, and when you run the program "
-// "with --v=1 or more. Present occurence is " << COUNTER;
+// "with --v=1 or more. Present occurence is " << google::COUNTER;
// VLOG_IF_EVERY_N(1, (size > 1024), 10)
// << "I'm printed on every 10th occurence of case when size is more "
// " than 1024, when you run the program with --v=1 or more. ";
-// "Present occurence is " << COUNTER;
+// "Present occurence is " << google::COUNTER;
//
// The supported severity levels for macros that allow you to specify one
// are (in increasing order of severity) INFO, WARNING, ERROR, and FATAL.
// --v=# set the verbose level
// --logtostderr log all the messages to stderr instead of to logfiles
+// LOG LINE PREFIX FORMAT
+//
+// Log lines have this form:
+//
+// Lmmdd hh:mm:ss.uuuuuu threadid file:line] msg...
+//
+// where the fields are defined as follows:
+//
+// L A single character, representing the log level
+// (eg 'I' for INFO)
+// mm The month (zero padded; ie May is '05')
+// dd The day (zero padded)
+// hh:mm:ss.uuuuuu Time in hours, minutes and fractional seconds
+// threadid The space-padded thread ID as returned by GetTID()
+// (this matches the PID on Linux)
+// file The file name
+// line The line number
+// msg The user-supplied message
+//
+// Example:
+//
+// I1103 11:57:31.739339 24395 google.cc:2341] Command line: ./some_prog
+// I1103 11:57:31.739403 24395 google.cc:2342] Process id 24395
+//
+// NOTE: although the microseconds are useful for comparing events on
+// a single machine, clocks on different machines may not be well
+// synchronized. Hence, use caution when comparing the low bits of
+// timestamps from different machines.
+
#ifndef DECLARE_VARIABLE
#define MUST_UNDEF_GFLAGS_DECLARE_MACROS
-#define DECLARE_VARIABLE(type, name, tn) \
- namespace FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead { \
- extern GOOGLE_GLOG_DLL_DECL type FLAGS_##name; \
- } \
- using FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead::FLAGS_##name
+#define DECLARE_VARIABLE(type, shorttype, name, tn) \
+ namespace fL##shorttype { \
+ extern GOOGLE_GLOG_DLL_DECL type FLAGS_##name; \
+ } \
+ using fL##shorttype::FLAGS_##name
// bool specialization
#define DECLARE_bool(name) \
- DECLARE_VARIABLE(bool, name, bool)
+ DECLARE_VARIABLE(bool, B, name, bool)
// int32 specialization
#define DECLARE_int32(name) \
- DECLARE_VARIABLE(@ac_google_namespace@::int32, name, int32)
+ DECLARE_VARIABLE(@ac_google_namespace@::int32, I, name, int32)
// Special case for string, because we have to specify the namespace
// std::string, which doesn't play nicely with our FLAG__namespace hackery.
-#define DECLARE_string(name) \
- namespace FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead { \
- extern GOOGLE_GLOG_DLL_DECL std::string FLAGS_##name; \
- } \
- using FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead::FLAGS_##name
+#define DECLARE_string(name) \
+ namespace fLS { \
+ extern GOOGLE_GLOG_DLL_DECL std::string& FLAGS_##name; \
+ } \
+ using fLS::FLAGS_##name
#endif
// Set whether log messages go to stderr instead of logfiles
DECLARE_bool(logtostderr);
-// Set how important a log message should be to avoid buffering
+// Set whether log messages go to stderr in addition to logfiles.
+DECLARE_bool(alsologtostderr);
+
+// Set color messages logged to stderr (if supported by terminal).
+DECLARE_bool(colorlogtostderr);
+
+// Log messages at a level >= this flag are automatically sent to
+// stderr in addition to log files.
+DECLARE_int32(stderrthreshold);
+
+// Set whether the log prefix should be prepended to each line of output.
+DECLARE_bool(log_prefix);
+
+// Log messages at a level <= this flag are buffered.
+// Log messages at a higher level are flushed immediately.
DECLARE_int32(logbuflevel);
+// Sets the maximum number of seconds which logs may be buffered for.
+DECLARE_int32(logbufsecs);
+
// Log suppression level: messages logged at a lower level than this
// are suppressed.
DECLARE_int32(minloglevel);
// default logging directory.
DECLARE_string(log_dir);
+// Set the log file mode.
+DECLARE_int32(logfile_mode);
+
+// Sets the path of the directory into which to put additional links
+// to the log files.
+DECLARE_string(log_link);
+
DECLARE_int32(v); // in vlog_is_on.cc
-DECLARE_int32(stderrthreshold);
-DECLARE_bool(alsologtostderr);
+// Sets the maximum log file size (in MB).
+DECLARE_int32(max_log_size);
+
+// Sets whether to avoid logging to the disk if the disk is full.
+DECLARE_bool(stop_logging_if_full_disk);
#ifdef MUST_UNDEF_GFLAGS_DECLARE_MACROS
#undef MUST_UNDEF_GFLAGS_DECLARE_MACROS
// LOG(INFO) and its ilk are used all over our code, it's
// better to have compact code for these operations.
-#if 0 >= GOOGLE_STRIP_LOG
-#define COMPACT_GOOGLE_LOG_INFO @ac_google_namespace@::LogMessage(__FILE__, __LINE__)
+#if GOOGLE_STRIP_LOG == 0
+#define COMPACT_GOOGLE_LOG_INFO @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__)
+#define LOG_TO_STRING_INFO(message) @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_INFO, message)
#else
#define COMPACT_GOOGLE_LOG_INFO @ac_google_namespace@::NullStream()
+#define LOG_TO_STRING_INFO(message) @ac_google_namespace@::NullStream()
#endif
-#if 1 >= GOOGLE_STRIP_LOG
-#define COMPACT_GOOGLE_LOG_WARNING @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::WARNING)
+#if GOOGLE_STRIP_LOG <= 1
+#define COMPACT_GOOGLE_LOG_WARNING @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_WARNING)
+#define LOG_TO_STRING_WARNING(message) @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_WARNING, message)
#else
#define COMPACT_GOOGLE_LOG_WARNING @ac_google_namespace@::NullStream()
+#define LOG_TO_STRING_WARNING(message) @ac_google_namespace@::NullStream()
#endif
-#if 2 >= GOOGLE_STRIP_LOG
-#define COMPACT_GOOGLE_LOG_ERROR @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::ERROR)
+#if GOOGLE_STRIP_LOG <= 2
+#define COMPACT_GOOGLE_LOG_ERROR @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_ERROR)
+#define LOG_TO_STRING_ERROR(message) @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_ERROR, message)
#else
#define COMPACT_GOOGLE_LOG_ERROR @ac_google_namespace@::NullStream()
+#define LOG_TO_STRING_ERROR(message) @ac_google_namespace@::NullStream()
#endif
-#if 3 >= GOOGLE_STRIP_LOG
-#define COMPACT_GOOGLE_LOG_FATAL @ac_google_namespace@::LogMessageFatal(__FILE__, __LINE__)
+#if GOOGLE_STRIP_LOG <= 3
+#define COMPACT_GOOGLE_LOG_FATAL @ac_google_namespace@::LogMessageFatal( \
+ __FILE__, __LINE__)
+#define LOG_TO_STRING_FATAL(message) @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_FATAL, message)
#else
#define COMPACT_GOOGLE_LOG_FATAL @ac_google_namespace@::NullStreamFatal()
+#define LOG_TO_STRING_FATAL(message) @ac_google_namespace@::NullStreamFatal()
+#endif
+
+#if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
+#define DCHECK_IS_ON() 0
+#else
+#define DCHECK_IS_ON() 1
#endif
// For DFATAL, we want to use LogMessage (as opposed to
// LogMessageFatal), to be consistent with the original behavior.
-#ifdef NDEBUG
+#if !DCHECK_IS_ON()
#define COMPACT_GOOGLE_LOG_DFATAL COMPACT_GOOGLE_LOG_ERROR
-#elif 3 >= GOOGLE_STRIP_LOG
-#define COMPACT_GOOGLE_LOG_DFATAL @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::FATAL)
+#elif GOOGLE_STRIP_LOG <= 3
+#define COMPACT_GOOGLE_LOG_DFATAL @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_FATAL)
#else
#define COMPACT_GOOGLE_LOG_DFATAL @ac_google_namespace@::NullStreamFatal()
#endif
-#define GOOGLE_LOG_INFO(counter) @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::INFO, counter, &@ac_google_namespace@::LogMessage::SendToLog)
+#define GOOGLE_LOG_INFO(counter) @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_INFO, counter, &@ac_google_namespace@::LogMessage::SendToLog)
#define SYSLOG_INFO(counter) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::INFO, counter, \
+ @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_INFO, counter, \
&@ac_google_namespace@::LogMessage::SendToSyslogAndLog)
#define GOOGLE_LOG_WARNING(counter) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::WARNING, counter, \
+ @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_WARNING, counter, \
&@ac_google_namespace@::LogMessage::SendToLog)
#define SYSLOG_WARNING(counter) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::WARNING, counter, \
+ @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_WARNING, counter, \
&@ac_google_namespace@::LogMessage::SendToSyslogAndLog)
#define GOOGLE_LOG_ERROR(counter) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::ERROR, counter, \
+ @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_ERROR, counter, \
&@ac_google_namespace@::LogMessage::SendToLog)
#define SYSLOG_ERROR(counter) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::ERROR, counter, \
+ @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_ERROR, counter, \
&@ac_google_namespace@::LogMessage::SendToSyslogAndLog)
#define GOOGLE_LOG_FATAL(counter) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::FATAL, counter, \
+ @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_FATAL, counter, \
&@ac_google_namespace@::LogMessage::SendToLog)
#define SYSLOG_FATAL(counter) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::FATAL, counter, \
+ @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_FATAL, counter, \
&@ac_google_namespace@::LogMessage::SendToSyslogAndLog)
#define GOOGLE_LOG_DFATAL(counter) \
@ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::DFATAL_LEVEL, counter, \
#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) || defined(__CYGWIN32__)
// A very useful logging macro to log windows errors:
#define LOG_SYSRESULT(result) \
- if (FAILED(result)) { \
- LPTSTR message = NULL; \
- LPTSTR msg = reinterpret_cast<LPTSTR>(&message); \
- DWORD message_length = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | \
+ if (FAILED(HRESULT_FROM_WIN32(result))) { \
+ LPSTR message = NULL; \
+ LPSTR msg = reinterpret_cast<LPSTR>(&message); \
+ DWORD message_length = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | \
FORMAT_MESSAGE_FROM_SYSTEM, \
0, result, 0, msg, 100, NULL); \
if (message_length > 0) { \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, ERROR, 0, \
- &@ac_google_namespace@::LogMessage::SendToLog).stream() << message; \
+ @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::GLOG_ERROR, 0, \
+ &@ac_google_namespace@::LogMessage::SendToLog).stream() \
+ << reinterpret_cast<const char*>(message); \
LocalFree(message); \
} \
}
// specified by argv0 in log outputs.
GOOGLE_GLOG_DLL_DECL void InitGoogleLogging(const char* argv0);
+// Shutdown google's logging library.
+GOOGLE_GLOG_DLL_DECL void ShutdownGoogleLogging();
+
// Install a function which will be called after LOG(FATAL).
GOOGLE_GLOG_DLL_DECL void InstallFailureFunction(void (*fail_func)());
class LogSink; // defined below
// If a non-NULL sink pointer is given, we push this message to that sink.
-// We then do normal LOG(severity) logging as well.
+// For LOG_TO_SINK we then do normal LOG(severity) logging as well.
// This is useful for capturing messages and passing/storing them
// somewhere more specific than the global log of the process.
// Argument types:
// LogSeverity severity;
// The cast is to disambiguate NULL arguments.
#define LOG_TO_SINK(sink, severity) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::severity, \
- static_cast<@ac_google_namespace@::LogSink*>(sink)).stream()
+ @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, \
+ @ac_google_namespace@::GLOG_ ## severity, \
+ static_cast<@ac_google_namespace@::LogSink*>(sink), true).stream()
+#define LOG_TO_SINK_BUT_NOT_TO_LOGFILE(sink, severity) \
+ @ac_google_namespace@::LogMessage( \
+ __FILE__, __LINE__, \
+ @ac_google_namespace@::GLOG_ ## severity, \
+ static_cast<@ac_google_namespace@::LogSink*>(sink), false).stream()
+
+// If a non-NULL string pointer is given, we write this message to that string.
+// We then do normal LOG(severity) logging as well.
+// This is useful for capturing messages and storing them somewhere more
+// specific than the global log of the process.
+// Argument types:
+// string* message;
+// LogSeverity severity;
+// The cast is to disambiguate NULL arguments.
+// NOTE: LOG(severity) expands to LogMessage().stream() for the specified
+// severity.
+#define LOG_TO_STRING(severity, message) \
+ LOG_TO_STRING_##severity(static_cast<string*>(message)).stream()
// If a non-NULL pointer is given, we push the message onto the end
// of a vector of strings; otherwise, we report it with LOG(severity).
// vector<string> *outvec;
// The cast is to disambiguate NULL arguments.
#define LOG_STRING(severity, outvec) \
- @ac_google_namespace@::LogMessage(__FILE__, __LINE__, @ac_google_namespace@::severity, \
- static_cast<std::vector<std::string>*>(outvec)).stream()
+ LOG_TO_STRING_##severity(static_cast<std::vector<std::string>*>(outvec)).stream()
#define LOG_IF(severity, condition) \
!(condition) ? (void) 0 : @ac_google_namespace@::LogMessageVoidify() & LOG(severity)
SYSLOG_IF(FATAL, !(condition)) << "Assert failed: " #condition
// CHECK dies with a fatal error if condition is not true. It is *not*
-// controlled by NDEBUG, so the check will be executed regardless of
+// controlled by DCHECK_IS_ON(), so the check will be executed regardless of
// compilation mode. Therefore, it is safe to do things like:
// CHECK(fp->Write(x) == 4)
#define CHECK(condition) \
// This declaration will allow use to use CHECK macros for user
// defined classes which have operator<< (e.g., stl_logging.h).
inline std::ostream& operator<<(
- std::ostream& out, const google::DummyClassToDefineOperator& dummy) {
+ std::ostream& out, const google::DummyClassToDefineOperator&) {
return out;
}
@ac_google_start_namespace@
-// Build the error message string.
-template<class t1, class t2>
-std::string* MakeCheckOpString(const t1& v1, const t2& v2, const char* names) {
- // It means that we cannot use stl_logging if compiler doesn't
- // support using expression for operator.
- // TODO(hamaji): Figure out a way to fix.
-#if @ac_cv_cxx_using_operator@
- using ::operator<<;
-#endif
- std::strstream ss;
- ss << names << " (" << v1 << " vs. " << v2 << ")";
- return new std::string(ss.str(), ss.pcount());
+// This formats a value for a failing CHECK_XX statement. Ordinarily,
+// it uses the definition for operator<<, with a few special cases below.
+template <typename T>
+inline void MakeCheckOpValueString(std::ostream* os, const T& v) {
+ (*os) << v;
+}
+
+// Overrides for char types provide readable values for unprintable
+// characters.
+template <> GOOGLE_GLOG_DLL_DECL
+void MakeCheckOpValueString(std::ostream* os, const char& v);
+template <> GOOGLE_GLOG_DLL_DECL
+void MakeCheckOpValueString(std::ostream* os, const signed char& v);
+template <> GOOGLE_GLOG_DLL_DECL
+void MakeCheckOpValueString(std::ostream* os, const unsigned char& v);
+
+// Build the error message string. Specify no inlining for code size.
+template <typename T1, typename T2>
+std::string* MakeCheckOpString(const T1& v1, const T2& v2, const char* exprtext)
+ @ac_cv___attribute___noinline@;
+
+namespace base {
+namespace internal {
+
+// If "s" is less than base_logging::INFO, returns base_logging::INFO.
+// If "s" is greater than base_logging::FATAL, returns
+// base_logging::ERROR. Otherwise, returns "s".
+LogSeverity NormalizeSeverity(LogSeverity s);
+
+} // namespace internal
+
+// A helper class for formatting "expr (V1 vs. V2)" in a CHECK_XX
+// statement. See MakeCheckOpString for sample usage. Other
+// approaches were considered: use of a template method (e.g.,
+// base::BuildCheckOpString(exprtext, base::Print<T1>, &v1,
+// base::Print<T2>, &v2), however this approach has complications
+// related to volatile arguments and function-pointer arguments).
+class GOOGLE_GLOG_DLL_DECL CheckOpMessageBuilder {
+ public:
+ // Inserts "exprtext" and " (" to the stream.
+ explicit CheckOpMessageBuilder(const char *exprtext);
+ // Deletes "stream_".
+ ~CheckOpMessageBuilder();
+ // For inserting the first variable.
+ std::ostream* ForVar1() { return stream_; }
+ // For inserting the second variable (adds an intermediate " vs. ").
+ std::ostream* ForVar2();
+ // Get the result (inserts the closing ")").
+ std::string* NewString();
+
+ private:
+ std::ostringstream *stream_;
+};
+
+} // namespace base
+
+template <typename T1, typename T2>
+std::string* MakeCheckOpString(const T1& v1, const T2& v2, const char* exprtext) {
+ base::CheckOpMessageBuilder comb(exprtext);
+ MakeCheckOpValueString(comb.ForVar1(), v1);
+ MakeCheckOpValueString(comb.ForVar2(), v2);
+ return comb.NewString();
}
// Helper functions for CHECK_OP macro.
// will not instantiate the template version of the function on values of
// unnamed enum type - see comment below.
#define DEFINE_CHECK_OP_IMPL(name, op) \
- template <class t1, class t2> \
- inline std::string* Check##name##Impl(const t1& v1, const t2& v2, \
- const char* names) { \
- if (v1 op v2) return NULL; \
- else return MakeCheckOpString(v1, v2, names); \
+ template <typename T1, typename T2> \
+ inline std::string* name##Impl(const T1& v1, const T2& v2, \
+ const char* exprtext) { \
+ if (GOOGLE_PREDICT_TRUE(v1 op v2)) return NULL; \
+ else return MakeCheckOpString(v1, v2, exprtext); \
} \
- inline std::string* Check##name##Impl(int v1, int v2, const char* names) { \
- return Check##name##Impl<int, int>(v1, v2, names); \
+ inline std::string* name##Impl(int v1, int v2, const char* exprtext) { \
+ return name##Impl<int, int>(v1, v2, exprtext); \
}
-// Use _EQ, _NE, _LE, etc. in case the file including base/logging.h
-// provides its own #defines for the simpler names EQ, NE, LE, etc.
+// We use the full name Check_EQ, Check_NE, etc. in case the file including
+// base/logging.h provides its own #defines for the simpler names EQ, NE, etc.
// This happens if, for example, those are used as token names in a
// yacc grammar.
-DEFINE_CHECK_OP_IMPL(_EQ, ==)
-DEFINE_CHECK_OP_IMPL(_NE, !=)
-DEFINE_CHECK_OP_IMPL(_LE, <=)
-DEFINE_CHECK_OP_IMPL(_LT, < )
-DEFINE_CHECK_OP_IMPL(_GE, >=)
-DEFINE_CHECK_OP_IMPL(_GT, > )
+DEFINE_CHECK_OP_IMPL(Check_EQ, ==) // Compilation error with CHECK_EQ(NULL, x)?
+DEFINE_CHECK_OP_IMPL(Check_NE, !=) // Use CHECK(x == NULL) instead.
+DEFINE_CHECK_OP_IMPL(Check_LE, <=)
+DEFINE_CHECK_OP_IMPL(Check_LT, < )
+DEFINE_CHECK_OP_IMPL(Check_GE, >=)
+DEFINE_CHECK_OP_IMPL(Check_GT, > )
#undef DEFINE_CHECK_OP_IMPL
// Helper macro for binary operators.
#if defined(STATIC_ANALYSIS)
// Only for static analysis tool to know that it is equivalent to assert
#define CHECK_OP_LOG(name, op, val1, val2, log) CHECK((val1) op (val2))
-#elif !defined(NDEBUG)
+#elif DCHECK_IS_ON()
// In debug mode, avoid constructing CheckOpStrings if possible,
// to reduce the overhead of CHECK statments by 2x.
// Real DCHECK-heavy tests have seen 1.5x speedups.
-// The meaning of "string" might be different between now and
+// The meaning of "string" might be different between now and
// when this macro gets invoked (e.g., if someone is experimenting
// with other string implementations that get defined after this
-// file is included). Save the current meaning now and use it
+// file is included). Save the current meaning now and use it
// in the macro.
typedef std::string _Check_string;
-#define CHECK_OP_LOG(name, op, val1, val2, log) \
- while (@ac_google_namespace@::_Check_string* _result = \
- @ac_google_namespace@::Check##name##Impl((val1), (val2), #val1 " " #op " " #val2)) \
- log(__FILE__, __LINE__, @ac_google_namespace@::CheckOpString(_result)).stream()
+#define CHECK_OP_LOG(name, op, val1, val2, log) \
+ while (@ac_google_namespace@::_Check_string* _result = \
+ @ac_google_namespace@::Check##name##Impl( \
+ @ac_google_namespace@::GetReferenceableValue(val1), \
+ @ac_google_namespace@::GetReferenceableValue(val2), \
+ #val1 " " #op " " #val2)) \
+ log(__FILE__, __LINE__, \
+ @ac_google_namespace@::CheckOpString(_result)).stream()
#else
// In optimized mode, use CheckOpString to hint to compiler that
// the while condition is unlikely.
-#define CHECK_OP_LOG(name, op, val1, val2, log) \
- while (@ac_google_namespace@::CheckOpString _result = \
- @ac_google_namespace@::Check##name##Impl(GetReferenceableValue(val1), \
- GetReferenceableValue(val2), \
- #val1 " " #op " " #val2)) \
+#define CHECK_OP_LOG(name, op, val1, val2, log) \
+ while (@ac_google_namespace@::CheckOpString _result = \
+ @ac_google_namespace@::Check##name##Impl( \
+ @ac_google_namespace@::GetReferenceableValue(val1), \
+ @ac_google_namespace@::GetReferenceableValue(val2), \
+ #val1 " " #op " " #val2)) \
log(__FILE__, __LINE__, _result).stream()
-#endif // STATIC_ANALYSIS, !NDEBUG
+#endif // STATIC_ANALYSIS, DCHECK_IS_ON()
+#if GOOGLE_STRIP_LOG <= 3
#define CHECK_OP(name, op, val1, val2) \
CHECK_OP_LOG(name, op, val1, val2, @ac_google_namespace@::LogMessageFatal)
+#else
+#define CHECK_OP(name, op, val1, val2) \
+ CHECK_OP_LOG(name, op, val1, val2, @ac_google_namespace@::NullStreamFatal)
+#endif // STRIP_LOG <= 3
// Equality/Inequality checks - compare two values, and log a FATAL message
// including the two values when the result is not as expected. The values
#define GOOGLE_PLOG(severity, counter) \
@ac_google_namespace@::ErrnoLogMessage( \
- __FILE__, __LINE__, @ac_google_namespace@::severity, counter, \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_ ## severity, counter, \
&@ac_google_namespace@::LogMessage::SendToLog)
#define PLOG_IF(severity, condition) \
if (++LOG_OCCURRENCES_MOD_N > n) LOG_OCCURRENCES_MOD_N -= n; \
if (LOG_OCCURRENCES_MOD_N == 1) \
@ac_google_namespace@::LogMessage( \
- __FILE__, __LINE__, @ac_google_namespace@::severity, LOG_OCCURRENCES, \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_ ## severity, LOG_OCCURRENCES, \
&what_to_do).stream()
#define SOME_KIND_OF_LOG_IF_EVERY_N(severity, condition, n, what_to_do) \
if (condition && \
((LOG_OCCURRENCES_MOD_N=(LOG_OCCURRENCES_MOD_N + 1) % n) == (1 % n))) \
@ac_google_namespace@::LogMessage( \
- __FILE__, __LINE__, @ac_google_namespace@::severity, LOG_OCCURRENCES, \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_ ## severity, LOG_OCCURRENCES, \
&what_to_do).stream()
#define SOME_KIND_OF_PLOG_EVERY_N(severity, n, what_to_do) \
if (++LOG_OCCURRENCES_MOD_N > n) LOG_OCCURRENCES_MOD_N -= n; \
if (LOG_OCCURRENCES_MOD_N == 1) \
@ac_google_namespace@::ErrnoLogMessage( \
- __FILE__, __LINE__, @ac_google_namespace@::severity, LOG_OCCURRENCES, \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_ ## severity, LOG_OCCURRENCES, \
&what_to_do).stream()
#define SOME_KIND_OF_LOG_FIRST_N(severity, n, what_to_do) \
++LOG_OCCURRENCES; \
if (LOG_OCCURRENCES <= n) \
@ac_google_namespace@::LogMessage( \
- __FILE__, __LINE__, @ac_google_namespace@::severity, LOG_OCCURRENCES, \
+ __FILE__, __LINE__, @ac_google_namespace@::GLOG_ ## severity, LOG_OCCURRENCES, \
&what_to_do).stream()
-#define LOG_EVERY_N(severity, n) \
+namespace glog_internal_namespace_ {
+template <bool>
+struct CompileAssert {
+};
+struct CrashReason;
+
+// Returns true if FailureSignalHandler is installed.
+bool IsFailureSignalHandlerInstalled();
+} // namespace glog_internal_namespace_
+
+#define GOOGLE_GLOG_COMPILE_ASSERT(expr, msg) \
+ typedef @ac_google_namespace@::glog_internal_namespace_::CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1]
+
+#define LOG_EVERY_N(severity, n) \
+ GOOGLE_GLOG_COMPILE_ASSERT(@ac_google_namespace@::GLOG_ ## severity < \
+ @ac_google_namespace@::NUM_SEVERITIES, \
+ INVALID_REQUESTED_LOG_SEVERITY); \
SOME_KIND_OF_LOG_EVERY_N(severity, (n), @ac_google_namespace@::LogMessage::SendToLog)
#define SYSLOG_EVERY_N(severity, n) \
// We want the special COUNTER value available for LOG_EVERY_X()'ed messages
enum PRIVATE_Counter {COUNTER};
+#ifdef GLOG_NO_ABBREVIATED_SEVERITIES
+// wingdi.h defines ERROR to be 0. When we call LOG(ERROR), it gets
+// substituted with 0, and it expands to COMPACT_GOOGLE_LOG_0. To allow us
+// to keep using this syntax, we define this macro to do the same thing
+// as COMPACT_GOOGLE_LOG_ERROR.
+#define COMPACT_GOOGLE_LOG_0 COMPACT_GOOGLE_LOG_ERROR
+#define SYSLOG_0 SYSLOG_ERROR
+#define LOG_TO_STRING_0 LOG_TO_STRING_ERROR
+// Needed for LOG_IS_ON(ERROR).
+const LogSeverity GLOG_0 = GLOG_ERROR;
+#else
+// Users may include windows.h after logging.h without
+// GLOG_NO_ABBREVIATED_SEVERITIES nor WIN32_LEAN_AND_MEAN.
+// For this case, we cannot detect if ERROR is defined before users
+// actually use ERROR. Let's make an undefined symbol to warn users.
+# define GLOG_ERROR_MSG ERROR_macro_is_defined_Define_GLOG_NO_ABBREVIATED_SEVERITIES_before_including_logging_h_See_the_document_for_detail
+# define COMPACT_GOOGLE_LOG_0 GLOG_ERROR_MSG
+# define SYSLOG_0 GLOG_ERROR_MSG
+# define LOG_TO_STRING_0 GLOG_ERROR_MSG
+# define GLOG_0 GLOG_ERROR_MSG
+#endif
// Plus some debug-logging macros that get compiled to nothing for production
-#ifndef NDEBUG
+#if DCHECK_IS_ON()
#define DLOG(severity) LOG(severity)
+#define DVLOG(verboselevel) VLOG(verboselevel)
#define DLOG_IF(severity, condition) LOG_IF(severity, condition)
#define DLOG_EVERY_N(severity, n) LOG_EVERY_N(severity, n)
#define DLOG_IF_EVERY_N(severity, condition, n) \
LOG_IF_EVERY_N(severity, condition, n)
#define DLOG_ASSERT(condition) LOG_ASSERT(condition)
-// debug-only checking. not executed in NDEBUG mode.
+// debug-only checking. executed if DCHECK_IS_ON().
#define DCHECK(condition) CHECK(condition)
#define DCHECK_EQ(val1, val2) CHECK_EQ(val1, val2)
#define DCHECK_NE(val1, val2) CHECK_NE(val1, val2)
#define DCHECK_LT(val1, val2) CHECK_LT(val1, val2)
#define DCHECK_GE(val1, val2) CHECK_GE(val1, val2)
#define DCHECK_GT(val1, val2) CHECK_GT(val1, val2)
+#define DCHECK_NOTNULL(val) CHECK_NOTNULL(val)
#define DCHECK_STREQ(str1, str2) CHECK_STREQ(str1, str2)
#define DCHECK_STRCASEEQ(str1, str2) CHECK_STRCASEEQ(str1, str2)
#define DCHECK_STRNE(str1, str2) CHECK_STRNE(str1, str2)
#define DCHECK_STRCASENE(str1, str2) CHECK_STRCASENE(str1, str2)
-#else // NDEBUG
+#else // !DCHECK_IS_ON()
#define DLOG(severity) \
true ? (void) 0 : @ac_google_namespace@::LogMessageVoidify() & LOG(severity)
+#define DVLOG(verboselevel) \
+ (true || !VLOG_IS_ON(verboselevel)) ?\
+ (void) 0 : @ac_google_namespace@::LogMessageVoidify() & LOG(INFO)
+
#define DLOG_IF(severity, condition) \
(true || !(condition)) ? (void) 0 : @ac_google_namespace@::LogMessageVoidify() & LOG(severity)
#define DLOG_ASSERT(condition) \
true ? (void) 0 : LOG_ASSERT(condition)
+// MSVC warning C4127: conditional expression is constant
#define DCHECK(condition) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK(condition)
+ GLOG_MSVC_POP_WARNING() CHECK(condition)
#define DCHECK_EQ(val1, val2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_EQ(val1, val2)
+ GLOG_MSVC_POP_WARNING() CHECK_EQ(val1, val2)
#define DCHECK_NE(val1, val2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_NE(val1, val2)
+ GLOG_MSVC_POP_WARNING() CHECK_NE(val1, val2)
#define DCHECK_LE(val1, val2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_LE(val1, val2)
+ GLOG_MSVC_POP_WARNING() CHECK_LE(val1, val2)
#define DCHECK_LT(val1, val2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_LT(val1, val2)
+ GLOG_MSVC_POP_WARNING() CHECK_LT(val1, val2)
#define DCHECK_GE(val1, val2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_GE(val1, val2)
+ GLOG_MSVC_POP_WARNING() CHECK_GE(val1, val2)
#define DCHECK_GT(val1, val2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_GT(val1, val2)
+ GLOG_MSVC_POP_WARNING() CHECK_GT(val1, val2)
+
+// You may see warnings in release mode if you don't use the return
+// value of DCHECK_NOTNULL. Please just use DCHECK for such cases.
+#define DCHECK_NOTNULL(val) (val)
#define DCHECK_STREQ(str1, str2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_STREQ(str1, str2)
+ GLOG_MSVC_POP_WARNING() CHECK_STREQ(str1, str2)
#define DCHECK_STRCASEEQ(str1, str2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_STRCASEEQ(str1, str2)
+ GLOG_MSVC_POP_WARNING() CHECK_STRCASEEQ(str1, str2)
#define DCHECK_STRNE(str1, str2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_STRNE(str1, str2)
+ GLOG_MSVC_POP_WARNING() CHECK_STRNE(str1, str2)
#define DCHECK_STRCASENE(str1, str2) \
+ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \
while (false) \
- CHECK_STRCASENE(str1, str2)
-
+ GLOG_MSVC_POP_WARNING() CHECK_STRCASENE(str1, str2)
-#endif // NDEBUG
+#endif // DCHECK_IS_ON()
// Log only in verbose mode.
#define VLOG_IF_EVERY_N(verboselevel, condition, n) \
LOG_IF_EVERY_N(INFO, (condition) && VLOG_IS_ON(verboselevel), n)
+namespace base_logging {
+
+// LogMessage::LogStream is a std::ostream backed by this streambuf.
+// This class ignores overflow and leaves two bytes at the end of the
+// buffer to allow for a '\n' and '\0'.
+class GOOGLE_GLOG_DLL_DECL LogStreamBuf : public std::streambuf {
+ public:
+ // REQUIREMENTS: "len" must be >= 2 to account for the '\n' and '\n'.
+ LogStreamBuf(char *buf, int len) {
+ setp(buf, buf + len - 2);
+ }
+
+ // This effectively ignores overflow.
+ virtual int_type overflow(int_type ch) {
+ return ch;
+ }
+
+ // Legacy public ostrstream method.
+ size_t pcount() const { return pptr() - pbase(); }
+ char* pbase() const { return std::streambuf::pbase(); }
+};
+
+} // namespace base_logging
+
//
// This class more or less represents a particular log message. You
// create an instance of LogMessage and then stream stuff to it.
#ifdef _MSC_VER
# pragma warning(disable: 4275)
#endif
- class GOOGLE_GLOG_DLL_DECL LogStream : public std::ostrstream {
+ class GOOGLE_GLOG_DLL_DECL LogStream : public std::ostream {
#ifdef _MSC_VER
# pragma warning(default: 4275)
#endif
public:
LogStream(char *buf, int len, int ctr)
- : ostrstream(buf, len),
- ctr_(ctr) {
- self_ = this;
+ : std::ostream(NULL),
+ streambuf_(buf, len),
+ ctr_(ctr),
+ self_(this) {
+ rdbuf(&streambuf_);
}
int ctr() const { return ctr_; }
void set_ctr(int ctr) { ctr_ = ctr; }
LogStream* self() const { return self_; }
+ // Legacy std::streambuf methods.
+ size_t pcount() const { return streambuf_.pcount(); }
+ char* pbase() const { return streambuf_.pbase(); }
+ char* str() const { return pbase(); }
+
private:
+ LogStream(const LogStream&);
+ LogStream& operator=(const LogStream&);
+ base_logging::LogStreamBuf streambuf_;
int ctr_; // Counter hack (for the LOG_EVERY_X() macro)
LogStream *self_; // Consistency check hack
};
// saves 17 bytes per call site.
LogMessage(const char* file, int line, LogSeverity severity);
- // Constructor to also log this message to a specified sink (if not NULL).
- // Implied are: ctr = 0, send_method = &LogMessage::SendToSinkAndLog.
- LogMessage(const char* file, int line, LogSeverity severity, LogSink* sink);
+ // Constructor to log this message to a specified sink (if not NULL).
+ // Implied are: ctr = 0, send_method = &LogMessage::SendToSinkAndLog if
+ // also_send_to_log is true, send_method = &LogMessage::SendToSink otherwise.
+ LogMessage(const char* file, int line, LogSeverity severity, LogSink* sink,
+ bool also_send_to_log);
// Constructor where we also give a vector<string> pointer
// for storing the messages (if the pointer is not NULL).
LogMessage(const char* file, int line, LogSeverity severity,
std::vector<std::string>* outvec);
+ // Constructor where we also give a string pointer for storing the
+ // message (if the pointer is not NULL). Implied are: ctr = 0,
+ // send_method = &LogMessage::WriteToStringAndLog.
+ LogMessage(const char* file, int line, LogSeverity severity,
+ std::string* message);
+
// A special constructor used for check failures
LogMessage(const char* file, int line, const CheckOpString& result);
void SendToSyslogAndLog(); // Actually dispatch to syslog and the logs
// Call abort() or similar to perform LOG(FATAL) crash.
- static void Fail() @ac_cv___attribute___noreturn@;
+ static void @ac_cv___attribute___noreturn@ Fail();
- std::ostream& stream() { return data_->stream_; }
+ std::ostream& stream();
- int preserved_errno() const { return data_->preserved_errno_; }
+ int preserved_errno() const;
// Must be called without the log_mutex held. (L < log_mutex)
static int64 num_messages(int severity);
-private:
+ struct LogMessageData;
+private:
// Fully internal SendMethod cases:
void SendToSinkAndLog(); // Send to sink if provided and dispatch to the logs
- void SaveOrSendToLog(); // Save to stringvec if provided, else to logs
+ void SendToSink(); // Send to sink if provided, do nothing otherwise.
- struct LogMessageData;
+ // Write to string if provided and dispatch to the logs.
+ void WriteToStringAndLog();
+
+ void SaveOrSendToLog(); // Save to stringvec if provided, else to logs
void Init(const char* file, int line, LogSeverity severity,
void (LogMessage::*send_method)());
- LogMessageData* GetMessageData(int preserved_errno, LogSeverity, int ctr);
+ // Used to fill in crash information during LOG(FATAL) failures.
+ void RecordCrashReason(glog_internal_namespace_::CrashReason* reason);
// Counts of messages sent at each priority:
static int64 num_messages_[NUM_SEVERITIES]; // under log_mutex
// We keep the data in a separate struct so that each instance of
// LogMessage uses less stack space.
- struct GOOGLE_GLOG_DLL_DECL LogMessageData {
- // ORDER DEPENDENCY: preserved_errno_ comes before buf_ comes before
- // message_text_ comes before stream_
- int preserved_errno_; // preserved errno
- char* buf_;
- char* message_text_; // Complete message text (points to selected buffer)
- LogStream stream_;
- const char severity_; // What level is this LogMessage logged at?
- int line_; // line number where logging call is.
- void (LogMessage::*send_method_)(); // Call this in destructor to send
- union { // At most one of these is used: union to keep the size low.
- LogSink* sink_; // NULL or sink to send message to
- std::vector<std::string>* outvec_; // NULL or vector to push message onto
- };
- time_t timestamp_; // Time of creation of LogMessage
- struct ::tm tm_time_; // Time of creation of LogMessage
- size_t num_prefix_chars_; // How many chars of "prefix" for this message?
- size_t num_chars_to_log_; // How many chars of msg to send to log?
- size_t num_chars_to_syslog_; // How many chars of msg to send to syslog?
-
- const char* basename_; // basename of the file which called LOG.
- const char* fullname_; // full name (including directory)
- // of the file which called LOG.
-
- bool has_been_flushed_; // False if data has not yet been flushed.
-
- LogMessageData(int preserved_errno, LogSeverity severity, int ctr);
- ~LogMessageData();
-
- private:
- LogMessageData(const LogMessageData&);
- void operator=(const LogMessageData&);
- };
-
- static LogMessageData fatal_message_data_;
-
LogMessageData* allocated_;
LogMessageData* data_;
public:
LogMessageFatal(const char* file, int line);
LogMessageFatal(const char* file, int line, const CheckOpString& result);
- ~LogMessageFatal() @ac_cv___attribute___noreturn@;
+ @ac_cv___attribute___noreturn@ ~LogMessageFatal();
};
// A non-macro interface to the log facility; (useful
// when the logging level is not a compile-time constant).
-inline void LogAtLevel(int const log_level, std::string const &msg) {
- LogMessage(__FILE__, __LINE__, log_level).stream() << msg;
+inline void LogAtLevel(int const severity, std::string const &msg) {
+ LogMessage(__FILE__, __LINE__, severity).stream() << msg;
}
+// A macro alternative of LogAtLevel. New code may want to use this
+// version since there are two advantages: 1. this version outputs the
+// file name and the line number where this macro is put like other
+// LOG macros, 2. this macro can be used as C++ stream.
+#define LOG_AT_LEVEL(severity) @ac_google_namespace@::LogMessage(__FILE__, __LINE__, severity).stream()
+
+// Check if it's compiled in C++11 mode.
+//
+// GXX_EXPERIMENTAL_CXX0X is defined by gcc and clang up to at least
+// gcc-4.7 and clang-3.1 (2011-12-13). __cplusplus was defined to 1
+// in gcc before 4.7 (Crosstool 16) and clang before 3.1, but is
+// defined according to the language version in effect thereafter.
+// Microsoft Visual Studio 14 (2015) sets __cplusplus==199711 despite
+// reasonably good C++11 support, so we set LANG_CXX for it and
+// newer versions (_MSC_VER >= 1900).
+#if (defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L || \
+ (defined(_MSC_VER) && _MSC_VER >= 1900))
+// Helper for CHECK_NOTNULL().
+//
+// In C++11, all cases can be handled by a single function. Since the value
+// category of the argument is preserved (also for rvalue references),
+// member initializer lists like the one below will compile correctly:
+//
+// Foo()
+// : x_(CHECK_NOTNULL(MethodReturningUniquePtr())) {}
+template <typename T>
+T CheckNotNull(const char* file, int line, const char* names, T&& t) {
+ if (t == nullptr) {
+ LogMessageFatal(file, line, new std::string(names));
+ }
+ return std::forward<T>(t);
+}
+
+#else
+
// A small helper for CHECK_NOTNULL().
template <typename T>
T* CheckNotNull(const char *file, int line, const char *names, T* t) {
}
return t;
}
+#endif
// Allow folks to put a counter in the LOG_EVERY_X()'ed messages. This
// only works if ostream is a LogStream. If the ostream is not a
// be set to an empty string, if this function failed. This means, in most
// cases, you do not need to check the error code and you can directly
// use the value of "buf". It will never have an undefined value.
+// DEPRECATED: Use StrError(int) instead.
GOOGLE_GLOG_DLL_DECL int posix_strerror_r(int err, char *buf, size_t len);
+// A thread-safe replacement for strerror(). Returns a string describing the
+// given POSIX error code.
+GOOGLE_GLOG_DLL_DECL std::string StrError(int err);
// A class for which we define operator<<, which does nothing.
class GOOGLE_GLOG_DLL_DECL NullStream : public LogMessage::LogStream {
// NullStream& is implicitly converted to LogStream&, in which case
// the overloaded NullStream::operator<< will not be invoked.
NullStream() : LogMessage::LogStream(message_buffer_, 1, 0) { }
+ NullStream(const char* /*file*/, int /*line*/,
+ const CheckOpString& /*result*/) :
+ LogMessage::LogStream(message_buffer_, 1, 0) { }
NullStream &stream() { return *this; }
private:
// A very short buffer for messages (which we discard anyway). This
// converted to LogStream and the message will be computed and then
// quietly discarded.
template<class T>
-inline NullStream& operator<<(NullStream &str, const T &value) { return str; }
+inline NullStream& operator<<(NullStream &str, const T &) { return str; }
// Similar to NullStream, but aborts the program (without stack
// trace), like LogMessageFatal.
class GOOGLE_GLOG_DLL_DECL NullStreamFatal : public NullStream {
public:
- @ac_cv___attribute___noreturn@ ~NullStreamFatal() { _exit(1); }
+ NullStreamFatal() { }
+ NullStreamFatal(const char* file, int line, const CheckOpString& result) :
+ NullStream(file, line, result) { }
+ @ac_cv___attribute___noreturn@ ~NullStreamFatal() throw () { _exit(1); }
};
// Install a signal handler that will dump signal information and a stack
projects / platform / upstream / glog.git / blobdiff