aBuild/glog/include/glog/log_severity.h
New file @@ -0,0 +1,92 @@ // Copyright (c) 2007, Google Inc. // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following disclaimer // in the documentation and/or other materials provided with the // distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef BASE_LOG_SEVERITY_H__ #define BASE_LOG_SEVERITY_H__ // Annoying stuff for windows -- makes sure clients can import these functions #ifndef GOOGLE_GLOG_DLL_DECL # if defined(_WIN32) && !defined(__CYGWIN__) # define GOOGLE_GLOG_DLL_DECL __declspec(dllimport) # else # define GOOGLE_GLOG_DLL_DECL # endif #endif // Variables of type LogSeverity are widely taken to lie in the range // [0, NUM_SEVERITIES-1]. Be careful to preserve this assumption if // you ever need to change their values or add a new severity. typedef int LogSeverity; const int GLOG_INFO = 0, GLOG_WARNING = 1, GLOG_ERROR = 2, GLOG_FATAL = 3, NUM_SEVERITIES = 4; #ifndef GLOG_NO_ABBREVIATED_SEVERITIES # ifdef ERROR # error ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail. # endif const int INFO = GLOG_INFO, WARNING = GLOG_WARNING, ERROR = GLOG_ERROR, FATAL = GLOG_FATAL; #endif // DFATAL is FATAL in debug mode, ERROR in normal mode #ifdef NDEBUG #define DFATAL_LEVEL ERROR #else #define DFATAL_LEVEL FATAL #endif extern GOOGLE_GLOG_DLL_DECL const char* const LogSeverityNames[NUM_SEVERITIES]; // NDEBUG usage helpers related to (RAW_)DCHECK: // // DEBUG_MODE is for small !NDEBUG uses like // if (DEBUG_MODE) foo.CheckThatFoo(); // instead of substantially more verbose // #ifndef NDEBUG // foo.CheckThatFoo(); // #endif // // IF_DEBUG_MODE is for small !NDEBUG uses like // IF_DEBUG_MODE( string error; ) // DCHECK(Foo(&error)) << error; // instead of substantially more verbose // #ifndef NDEBUG // string error; // DCHECK(Foo(&error)) << error; // #endif // #ifdef NDEBUG enum { DEBUG_MODE = 0 }; #define IF_DEBUG_MODE(x) #else enum { DEBUG_MODE = 1 }; #define IF_DEBUG_MODE(x) x #endif #endif // BASE_LOG_SEVERITY_H__ aBuild/glog/include/glog/logging.h
New file @@ -0,0 +1,1653 @@ // 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 // // This file contains #include information about logging-related stuff. // Pretty much everybody needs to #include this file so that they can // log various happenings. // #ifndef _LOGGING_H_ #define _LOGGING_H_ #include <errno.h> #include <string.h> #include <time.h> #include <iosfwd> #include <ostream> #include <sstream> #include <string> #if 1 # include <unistd.h> #endif #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 #define GLOG_MSVC_PUSH_DISABLE_WARNING(n) #define GLOG_MSVC_POP_WARNING() #endif // Annoying stuff for windows -- makes sure clients can import these functions #ifndef GOOGLE_GLOG_DLL_DECL # if defined(_WIN32) && !defined(__CYGWIN__) # define GOOGLE_GLOG_DLL_DECL __declspec(dllimport) # else # define GOOGLE_GLOG_DLL_DECL # endif #endif // We care a lot about number of bits things take up. Unfortunately, // systems define their bit-specific ints in a lot of different ways. // We use our own way, and have a typedef to get there. // Note: these commands below may look like "#if 1" or "#if 0", but // that's because they were constructed that way at ./configure time. // Look at logging.h.in to see how they're calculated (based on your config). #if 1 #include <stdint.h> // the normal place uint16_t is defined #endif #if 1 #include <sys/types.h> // the normal place u_int16_t is defined #endif #if 1 #include <inttypes.h> // a third place for uint16_t or u_int16_t #endif #if 0 #include <gflags/gflags.h> #endif namespace google { #if 1 // the C99 format typedef int32_t int32; typedef uint32_t uint32; typedef int64_t int64; typedef uint64_t uint64; #elif 1 // the BSD format typedef int32_t int32; typedef u_int32_t uint32; typedef int64_t int64; typedef u_int64_t uint64; #elif 0 // the windows (vc7) format typedef __int32 int32; typedef unsigned __int32 uint32; typedef __int64 int64; typedef unsigned __int64 uint64; #else #error Do not know how to define a 32-bit integer quantity on your system #endif } // The global value of GOOGLE_STRIP_LOG. All the messages logged to // LOG(XXX) with severity less than GOOGLE_STRIP_LOG will not be displayed. // If it can be determined at compile time that the message will not be // printed, the statement will be compiled out. // // Example: to strip out all INFO and WARNING messages, use the value // of 2 below. To make an exception for WARNING messages from a single // file, add "#define GOOGLE_STRIP_LOG 1" to that file _before_ including // base/logging.h #ifndef GOOGLE_STRIP_LOG #define GOOGLE_STRIP_LOG 0 #endif // GCC can be told that a certain branch is not likely to be taken (for // instance, a CHECK failure), and use that information in static analysis. // Giving it this information can help it optimize for the common case in // the absence of better information (ie. -fprofile-arcs). // #ifndef GOOGLE_PREDICT_BRANCH_NOT_TAKEN #if 1 #define GOOGLE_PREDICT_BRANCH_NOT_TAKEN(x) (__builtin_expect(x, 0)) #else #define GOOGLE_PREDICT_BRANCH_NOT_TAKEN(x) x #endif #endif #ifndef GOOGLE_PREDICT_FALSE #if 1 #define GOOGLE_PREDICT_FALSE(x) (__builtin_expect(x, 0)) #else #define GOOGLE_PREDICT_FALSE(x) x #endif #endif #ifndef GOOGLE_PREDICT_TRUE #if 1 #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., // // LOG(INFO) << "Found " << num_cookies << " cookies"; // // You can capture log messages in a string, rather than reporting them // immediately: // // vector<string> errors; // LOG_STRING(ERROR, &errors) << "Couldn't parse cookie #" << cookie_num; // // This pushes back the new error onto 'errors'; if given a NULL pointer, // it reports the error via LOG(ERROR). // // You can also do conditional logging: // // LOG_IF(INFO, num_cookies > 10) << "Got lots of cookies"; // // You can also do occasional logging (log every n'th occurrence of an // event): // // 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 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 " << 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 " << google::COUNTER << "th cookie"; // // Outputs log messages for the first 20 times it is executed. // // Analogous SYSLOG, SYSLOG_IF, and SYSLOG_EVERY_N macros are available. // These log to syslog as well as to the normal logs. If you use these at // all, you need to be aware that syslog can drastically reduce performance, // especially if it is configured for remote logging! Don't use these // unless you fully understand this and have a concrete need to use them. // Even then, try to minimize your use of them. // // There are also "debug mode" logging macros like the ones above: // // DLOG(INFO) << "Found cookies"; // // DLOG_IF(INFO, num_cookies > 10) << "Got lots of cookies"; // // 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. // // We also have // // LOG_ASSERT(assertion); // DLOG_ASSERT(assertion); // // which is syntactic sugar for {,D}LOG_IF(FATAL, assert fails) << assertion; // // There are "verbose level" logging macros. They look like // // VLOG(1) << "I'm printed when you run the program with --v=1 or more"; // VLOG(2) << "I'm printed when you run the program with --v=2 or more"; // // These always log at the INFO log level (when they log at all). // The verbose logging can also be turned on module-by-module. For instance, // --vmodule=mapreduce=2,file=1,gfs*=3 --v=0 // will cause: // a. VLOG(2) and lower messages to be printed from mapreduce.{h,cc} // b. VLOG(1) and lower messages to be printed from file.{h,cc} // c. VLOG(3) and lower messages to be printed from files prefixed with "gfs" // d. VLOG(0) and lower messages to be printed from elsewhere // // The wildcarding functionality shown by (c) supports both '*' (match // 0 or more characters) and '?' (match any single character) wildcards. // // There's also VLOG_IS_ON(n) "verbose level" condition macro. To be used as // // if (VLOG_IS_ON(2)) { // // do some logging preparation and logging // // that can't be accomplished with just VLOG(2) << ...; // } // // There are also VLOG_IF, VLOG_EVERY_N and VLOG_IF_EVERY_N "verbose level" // condition macros for sample cases, when some extra computation and // preparation for logs is not needed. // VLOG_IF(1, (size > 1024)) // << "I'm printed when size is more than 1024 and when you run the " // "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 " << 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 " << 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. // Note that messages of a given severity are logged not only in the // logfile for that severity, but also in all logfiles of lower severity. // E.g., a message of severity FATAL will be logged to the logfiles of // severity FATAL, ERROR, WARNING, and INFO. // // There is also the special severity of DFATAL, which logs FATAL in // debug mode, ERROR in normal mode. // // Very important: logging a message at the FATAL severity level causes // the program to terminate (after the message is logged). // // Unless otherwise specified, logs will be written to the filename // "<program name>.<hostname>.<user name>.log.<severity level>.", followed // by the date, time, and pid (you can't prevent the date, time, and pid // from being in the filename). // // The logging code takes two flags: // --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, 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, B, name, bool) // int32 specialization #define DECLARE_int32(name) \ DECLARE_VARIABLE(google::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 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 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); // If specified, logfiles are written into this directory instead of the // 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 // 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 #undef DECLARE_VARIABLE #undef DECLARE_bool #undef DECLARE_int32 #undef DECLARE_string #endif // Log messages below the GOOGLE_STRIP_LOG level will be compiled away for // security reasons. See LOG(severtiy) below. // A few definitions of macros that don't generate much code. Since // LOG(INFO) and its ilk are used all over our code, it's // better to have compact code for these operations. #if GOOGLE_STRIP_LOG == 0 #define COMPACT_GOOGLE_LOG_INFO google::LogMessage( \ __FILE__, __LINE__) #define LOG_TO_STRING_INFO(message) google::LogMessage( \ __FILE__, __LINE__, google::GLOG_INFO, message) #else #define COMPACT_GOOGLE_LOG_INFO google::NullStream() #define LOG_TO_STRING_INFO(message) google::NullStream() #endif #if GOOGLE_STRIP_LOG <= 1 #define COMPACT_GOOGLE_LOG_WARNING google::LogMessage( \ __FILE__, __LINE__, google::GLOG_WARNING) #define LOG_TO_STRING_WARNING(message) google::LogMessage( \ __FILE__, __LINE__, google::GLOG_WARNING, message) #else #define COMPACT_GOOGLE_LOG_WARNING google::NullStream() #define LOG_TO_STRING_WARNING(message) google::NullStream() #endif #if GOOGLE_STRIP_LOG <= 2 #define COMPACT_GOOGLE_LOG_ERROR google::LogMessage( \ __FILE__, __LINE__, google::GLOG_ERROR) #define LOG_TO_STRING_ERROR(message) google::LogMessage( \ __FILE__, __LINE__, google::GLOG_ERROR, message) #else #define COMPACT_GOOGLE_LOG_ERROR google::NullStream() #define LOG_TO_STRING_ERROR(message) google::NullStream() #endif #if GOOGLE_STRIP_LOG <= 3 #define COMPACT_GOOGLE_LOG_FATAL google::LogMessageFatal( \ __FILE__, __LINE__) #define LOG_TO_STRING_FATAL(message) google::LogMessage( \ __FILE__, __LINE__, google::GLOG_FATAL, message) #else #define COMPACT_GOOGLE_LOG_FATAL google::NullStreamFatal() #define LOG_TO_STRING_FATAL(message) google::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. #if !DCHECK_IS_ON() #define COMPACT_GOOGLE_LOG_DFATAL COMPACT_GOOGLE_LOG_ERROR #elif GOOGLE_STRIP_LOG <= 3 #define COMPACT_GOOGLE_LOG_DFATAL google::LogMessage( \ __FILE__, __LINE__, google::GLOG_FATAL) #else #define COMPACT_GOOGLE_LOG_DFATAL google::NullStreamFatal() #endif #define GOOGLE_LOG_INFO(counter) google::LogMessage(__FILE__, __LINE__, google::GLOG_INFO, counter, &google::LogMessage::SendToLog) #define SYSLOG_INFO(counter) \ google::LogMessage(__FILE__, __LINE__, google::GLOG_INFO, counter, \ &google::LogMessage::SendToSyslogAndLog) #define GOOGLE_LOG_WARNING(counter) \ google::LogMessage(__FILE__, __LINE__, google::GLOG_WARNING, counter, \ &google::LogMessage::SendToLog) #define SYSLOG_WARNING(counter) \ google::LogMessage(__FILE__, __LINE__, google::GLOG_WARNING, counter, \ &google::LogMessage::SendToSyslogAndLog) #define GOOGLE_LOG_ERROR(counter) \ google::LogMessage(__FILE__, __LINE__, google::GLOG_ERROR, counter, \ &google::LogMessage::SendToLog) #define SYSLOG_ERROR(counter) \ google::LogMessage(__FILE__, __LINE__, google::GLOG_ERROR, counter, \ &google::LogMessage::SendToSyslogAndLog) #define GOOGLE_LOG_FATAL(counter) \ google::LogMessage(__FILE__, __LINE__, google::GLOG_FATAL, counter, \ &google::LogMessage::SendToLog) #define SYSLOG_FATAL(counter) \ google::LogMessage(__FILE__, __LINE__, google::GLOG_FATAL, counter, \ &google::LogMessage::SendToSyslogAndLog) #define GOOGLE_LOG_DFATAL(counter) \ google::LogMessage(__FILE__, __LINE__, google::DFATAL_LEVEL, counter, \ &google::LogMessage::SendToLog) #define SYSLOG_DFATAL(counter) \ google::LogMessage(__FILE__, __LINE__, google::DFATAL_LEVEL, counter, \ &google::LogMessage::SendToSyslogAndLog) #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(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) { \ google::LogMessage(__FILE__, __LINE__, google::GLOG_ERROR, 0, \ &google::LogMessage::SendToLog).stream() \ << reinterpret_cast<const char*>(message); \ LocalFree(message); \ } \ } #endif // We use the preprocessor's merging operator, "##", so that, e.g., // LOG(INFO) becomes the token GOOGLE_LOG_INFO. There's some funny // subtle difference between ostream member streaming functions (e.g., // ostream::operator<<(int) and ostream non-member streaming functions // (e.g., ::operator<<(ostream&, string&): it turns out that it's // impossible to stream something like a string directly to an unnamed // ostream. We employ a neat hack by calling the stream() member // function of LogMessage which seems to avoid the problem. #define LOG(severity) COMPACT_GOOGLE_LOG_ ## severity.stream() #define SYSLOG(severity) SYSLOG_ ## severity(0).stream() namespace google { // They need the definitions of integer types. #include "glog/log_severity.h" #include "glog/vlog_is_on.h" // Initialize google's logging library. You will see the program name // 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. // 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: // LogSink* sink; // LogSeverity severity; // The cast is to disambiguate NULL arguments. #define LOG_TO_SINK(sink, severity) \ google::LogMessage( \ __FILE__, __LINE__, \ google::GLOG_ ## severity, \ static_cast<google::LogSink*>(sink), true).stream() #define LOG_TO_SINK_BUT_NOT_TO_LOGFILE(sink, severity) \ google::LogMessage( \ __FILE__, __LINE__, \ google::GLOG_ ## severity, \ static_cast<google::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). // This is handy for capturing messages and perhaps passing them back // to the caller, rather than reporting them immediately. // Argument types: // LogSeverity severity; // vector<string> *outvec; // The cast is to disambiguate NULL arguments. #define LOG_STRING(severity, outvec) \ LOG_TO_STRING_##severity(static_cast<std::vector<std::string>*>(outvec)).stream() #define LOG_IF(severity, condition) \ !(condition) ? (void) 0 : google::LogMessageVoidify() & LOG(severity) #define SYSLOG_IF(severity, condition) \ !(condition) ? (void) 0 : google::LogMessageVoidify() & SYSLOG(severity) #define LOG_ASSERT(condition) \ LOG_IF(FATAL, !(condition)) << "Assert failed: " #condition #define SYSLOG_ASSERT(condition) \ SYSLOG_IF(FATAL, !(condition)) << "Assert failed: " #condition // CHECK dies with a fatal error if condition is not true. It is *not* // 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) \ LOG_IF(FATAL, GOOGLE_PREDICT_BRANCH_NOT_TAKEN(!(condition))) \ << "Check failed: " #condition " " // A container for a string pointer which can be evaluated to a bool - // true iff the pointer is NULL. struct CheckOpString { CheckOpString(std::string* str) : str_(str) { } // No destructor: if str_ is non-NULL, we're about to LOG(FATAL), // so there's no point in cleaning up str_. operator bool() const { return GOOGLE_PREDICT_BRANCH_NOT_TAKEN(str_ != NULL); } std::string* str_; }; // Function is overloaded for integral types to allow static const // integrals declared in classes and not defined to be used as arguments to // CHECK* macros. It's not encouraged though. template <class T> inline const T& GetReferenceableValue(const T& t) { return t; } inline char GetReferenceableValue(char t) { return t; } inline unsigned char GetReferenceableValue(unsigned char t) { return t; } inline signed char GetReferenceableValue(signed char t) { return t; } inline short GetReferenceableValue(short t) { return t; } inline unsigned short GetReferenceableValue(unsigned short t) { return t; } inline int GetReferenceableValue(int t) { return t; } inline unsigned int GetReferenceableValue(unsigned int t) { return t; } inline long GetReferenceableValue(long t) { return t; } inline unsigned long GetReferenceableValue(unsigned long t) { return t; } inline long long GetReferenceableValue(long long t) { return t; } inline unsigned long long GetReferenceableValue(unsigned long long t) { return t; } // This is a dummy class to define the following operator. struct DummyClassToDefineOperator {}; } // Define global operator<< to declare using ::operator<<. // 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&) { return out; } namespace google { // 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) __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. // The (int, int) specialization works around the issue that the compiler // 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 <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* name##Impl(int v1, int v2, const char* exprtext) { \ return name##Impl<int, int>(v1, v2, exprtext); \ } // 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(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. // Don't use this macro directly in your code, use CHECK_EQ et al below. #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 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 // 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 // in the macro. typedef std::string _Check_string; #define CHECK_OP_LOG(name, op, val1, val2, log) \ while (google::_Check_string* _result = \ google::Check##name##Impl( \ google::GetReferenceableValue(val1), \ google::GetReferenceableValue(val2), \ #val1 " " #op " " #val2)) \ log(__FILE__, __LINE__, \ google::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 (google::CheckOpString _result = \ google::Check##name##Impl( \ google::GetReferenceableValue(val1), \ google::GetReferenceableValue(val2), \ #val1 " " #op " " #val2)) \ log(__FILE__, __LINE__, _result).stream() #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, google::LogMessageFatal) #else #define CHECK_OP(name, op, val1, val2) \ CHECK_OP_LOG(name, op, val1, val2, google::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 // must have operator<<(ostream, ...) defined. // // You may append to the error message like so: // CHECK_NE(1, 2) << ": The world must be ending!"; // // We are very careful to ensure that each argument is evaluated exactly // once, and that anything which is legal to pass as a function argument is // legal here. In particular, the arguments may be temporary expressions // which will end up being destroyed at the end of the apparent statement, // for example: // CHECK_EQ(string("abc")[1], 'b'); // // WARNING: These don't compile correctly if one of the arguments is a pointer // and the other is NULL. To work around this, simply static_cast NULL to the // type of the desired pointer. #define CHECK_EQ(val1, val2) CHECK_OP(_EQ, ==, val1, val2) #define CHECK_NE(val1, val2) CHECK_OP(_NE, !=, val1, val2) #define CHECK_LE(val1, val2) CHECK_OP(_LE, <=, val1, val2) #define CHECK_LT(val1, val2) CHECK_OP(_LT, < , val1, val2) #define CHECK_GE(val1, val2) CHECK_OP(_GE, >=, val1, val2) #define CHECK_GT(val1, val2) CHECK_OP(_GT, > , val1, val2) // Check that the input is non NULL. This very useful in constructor // initializer lists. #define CHECK_NOTNULL(val) \ google::CheckNotNull(__FILE__, __LINE__, "'" #val "' Must be non NULL", (val)) // Helper functions for string comparisons. // To avoid bloat, the definitions are in logging.cc. #define DECLARE_CHECK_STROP_IMPL(func, expected) \ GOOGLE_GLOG_DLL_DECL std::string* Check##func##expected##Impl( \ const char* s1, const char* s2, const char* names); DECLARE_CHECK_STROP_IMPL(strcmp, true) DECLARE_CHECK_STROP_IMPL(strcmp, false) DECLARE_CHECK_STROP_IMPL(strcasecmp, true) DECLARE_CHECK_STROP_IMPL(strcasecmp, false) #undef DECLARE_CHECK_STROP_IMPL // Helper macro for string comparisons. // Don't use this macro directly in your code, use CHECK_STREQ et al below. #define CHECK_STROP(func, op, expected, s1, s2) \ while (google::CheckOpString _result = \ google::Check##func##expected##Impl((s1), (s2), \ #s1 " " #op " " #s2)) \ LOG(FATAL) << *_result.str_ // String (char*) equality/inequality checks. // CASE versions are case-insensitive. // // Note that "s1" and "s2" may be temporary strings which are destroyed // by the compiler at the end of the current "full expression" // (e.g. CHECK_STREQ(Foo().c_str(), Bar().c_str())). #define CHECK_STREQ(s1, s2) CHECK_STROP(strcmp, ==, true, s1, s2) #define CHECK_STRNE(s1, s2) CHECK_STROP(strcmp, !=, false, s1, s2) #define CHECK_STRCASEEQ(s1, s2) CHECK_STROP(strcasecmp, ==, true, s1, s2) #define CHECK_STRCASENE(s1, s2) CHECK_STROP(strcasecmp, !=, false, s1, s2) #define CHECK_INDEX(I,A) CHECK(I < (sizeof(A)/sizeof(A[0]))) #define CHECK_BOUND(B,A) CHECK(B <= (sizeof(A)/sizeof(A[0]))) #define CHECK_DOUBLE_EQ(val1, val2) \ do { \ CHECK_LE((val1), (val2)+0.000000000000001L); \ CHECK_GE((val1), (val2)-0.000000000000001L); \ } while (0) #define CHECK_NEAR(val1, val2, margin) \ do { \ CHECK_LE((val1), (val2)+(margin)); \ CHECK_GE((val1), (val2)-(margin)); \ } while (0) // perror()..googly style! // // PLOG() and PLOG_IF() and PCHECK() behave exactly like their LOG* and // CHECK equivalents with the addition that they postpend a description // of the current state of errno to their output lines. #define PLOG(severity) GOOGLE_PLOG(severity, 0).stream() #define GOOGLE_PLOG(severity, counter) \ google::ErrnoLogMessage( \ __FILE__, __LINE__, google::GLOG_ ## severity, counter, \ &google::LogMessage::SendToLog) #define PLOG_IF(severity, condition) \ !(condition) ? (void) 0 : google::LogMessageVoidify() & PLOG(severity) // A CHECK() macro that postpends errno if the condition is false. E.g. // // if (poll(fds, nfds, timeout) == -1) { PCHECK(errno == EINTR); ... } #define PCHECK(condition) \ PLOG_IF(FATAL, GOOGLE_PREDICT_BRANCH_NOT_TAKEN(!(condition))) \ << "Check failed: " #condition " " // A CHECK() macro that lets you assert the success of a function that // returns -1 and sets errno in case of an error. E.g. // // CHECK_ERR(mkdir(path, 0700)); // // or // // int fd = open(filename, flags); CHECK_ERR(fd) << ": open " << filename; #define CHECK_ERR(invocation) \ PLOG_IF(FATAL, GOOGLE_PREDICT_BRANCH_NOT_TAKEN((invocation) == -1)) \ << #invocation // Use macro expansion to create, for each use of LOG_EVERY_N(), static // variables with the __LINE__ expansion as part of the variable name. #define LOG_EVERY_N_VARNAME(base, line) LOG_EVERY_N_VARNAME_CONCAT(base, line) #define LOG_EVERY_N_VARNAME_CONCAT(base, line) base ## line #define LOG_OCCURRENCES LOG_EVERY_N_VARNAME(occurrences_, __LINE__) #define LOG_OCCURRENCES_MOD_N LOG_EVERY_N_VARNAME(occurrences_mod_n_, __LINE__) #define SOME_KIND_OF_LOG_EVERY_N(severity, n, what_to_do) \ static int LOG_OCCURRENCES = 0, LOG_OCCURRENCES_MOD_N = 0; \ ++LOG_OCCURRENCES; \ if (++LOG_OCCURRENCES_MOD_N > n) LOG_OCCURRENCES_MOD_N -= n; \ if (LOG_OCCURRENCES_MOD_N == 1) \ google::LogMessage( \ __FILE__, __LINE__, google::GLOG_ ## severity, LOG_OCCURRENCES, \ &what_to_do).stream() #define SOME_KIND_OF_LOG_IF_EVERY_N(severity, condition, n, what_to_do) \ static int LOG_OCCURRENCES = 0, LOG_OCCURRENCES_MOD_N = 0; \ ++LOG_OCCURRENCES; \ if (condition && \ ((LOG_OCCURRENCES_MOD_N=(LOG_OCCURRENCES_MOD_N + 1) % n) == (1 % n))) \ google::LogMessage( \ __FILE__, __LINE__, google::GLOG_ ## severity, LOG_OCCURRENCES, \ &what_to_do).stream() #define SOME_KIND_OF_PLOG_EVERY_N(severity, n, what_to_do) \ static int LOG_OCCURRENCES = 0, LOG_OCCURRENCES_MOD_N = 0; \ ++LOG_OCCURRENCES; \ if (++LOG_OCCURRENCES_MOD_N > n) LOG_OCCURRENCES_MOD_N -= n; \ if (LOG_OCCURRENCES_MOD_N == 1) \ google::ErrnoLogMessage( \ __FILE__, __LINE__, google::GLOG_ ## severity, LOG_OCCURRENCES, \ &what_to_do).stream() #define SOME_KIND_OF_LOG_FIRST_N(severity, n, what_to_do) \ static int LOG_OCCURRENCES = 0; \ if (LOG_OCCURRENCES <= n) \ ++LOG_OCCURRENCES; \ if (LOG_OCCURRENCES <= n) \ google::LogMessage( \ __FILE__, __LINE__, google::GLOG_ ## severity, LOG_OCCURRENCES, \ &what_to_do).stream() namespace glog_internal_namespace_ { template <bool> struct CompileAssert { }; struct CrashReason; // Returns true if FailureSignalHandler is installed. // Needs to be exported since it's used by the signalhandler_unittest. GOOGLE_GLOG_DLL_DECL bool IsFailureSignalHandlerInstalled(); } // namespace glog_internal_namespace_ #define LOG_EVERY_N(severity, n) \ SOME_KIND_OF_LOG_EVERY_N(severity, (n), google::LogMessage::SendToLog) #define SYSLOG_EVERY_N(severity, n) \ SOME_KIND_OF_LOG_EVERY_N(severity, (n), google::LogMessage::SendToSyslogAndLog) #define PLOG_EVERY_N(severity, n) \ SOME_KIND_OF_PLOG_EVERY_N(severity, (n), google::LogMessage::SendToLog) #define LOG_FIRST_N(severity, n) \ SOME_KIND_OF_LOG_FIRST_N(severity, (n), google::LogMessage::SendToLog) #define LOG_IF_EVERY_N(severity, condition, n) \ SOME_KIND_OF_LOG_IF_EVERY_N(severity, (condition), (n), google::LogMessage::SendToLog) // 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 #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. 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_LE(val1, val2) CHECK_LE(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 // !DCHECK_IS_ON() #define DLOG(severity) \ true ? (void) 0 : google::LogMessageVoidify() & LOG(severity) #define DVLOG(verboselevel) \ (true || !VLOG_IS_ON(verboselevel)) ?\ (void) 0 : google::LogMessageVoidify() & LOG(INFO) #define DLOG_IF(severity, condition) \ (true || !(condition)) ? (void) 0 : google::LogMessageVoidify() & LOG(severity) #define DLOG_EVERY_N(severity, n) \ true ? (void) 0 : google::LogMessageVoidify() & LOG(severity) #define DLOG_IF_EVERY_N(severity, condition, n) \ (true || !(condition))? (void) 0 : google::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) \ GLOG_MSVC_POP_WARNING() CHECK(condition) #define DCHECK_EQ(val1, val2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ GLOG_MSVC_POP_WARNING() CHECK_EQ(val1, val2) #define DCHECK_NE(val1, val2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ GLOG_MSVC_POP_WARNING() CHECK_NE(val1, val2) #define DCHECK_LE(val1, val2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ GLOG_MSVC_POP_WARNING() CHECK_LE(val1, val2) #define DCHECK_LT(val1, val2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ GLOG_MSVC_POP_WARNING() CHECK_LT(val1, val2) #define DCHECK_GE(val1, val2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ GLOG_MSVC_POP_WARNING() CHECK_GE(val1, val2) #define DCHECK_GT(val1, val2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ 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) \ GLOG_MSVC_POP_WARNING() CHECK_STREQ(str1, str2) #define DCHECK_STRCASEEQ(str1, str2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ GLOG_MSVC_POP_WARNING() CHECK_STRCASEEQ(str1, str2) #define DCHECK_STRNE(str1, str2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ GLOG_MSVC_POP_WARNING() CHECK_STRNE(str1, str2) #define DCHECK_STRCASENE(str1, str2) \ GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \ while (false) \ GLOG_MSVC_POP_WARNING() CHECK_STRCASENE(str1, str2) #endif // DCHECK_IS_ON() // Log only in verbose mode. #define VLOG(verboselevel) LOG_IF(INFO, VLOG_IS_ON(verboselevel)) #define VLOG_IF(verboselevel, condition) \ LOG_IF(INFO, (condition) && VLOG_IS_ON(verboselevel)) #define VLOG_EVERY_N(verboselevel, n) \ LOG_IF_EVERY_N(INFO, VLOG_IS_ON(verboselevel), n) #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 '\0'. 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. // When you finish streaming to it, ~LogMessage is called and the // full message gets streamed to the appropriate destination. // // You shouldn't actually use LogMessage's constructor to log things, // though. You should use the LOG() macro (and variants thereof) // above. class GOOGLE_GLOG_DLL_DECL LogMessage { public: enum { // Passing kNoLogPrefix for the line number disables the // log-message prefix. Useful for using the LogMessage // infrastructure as a printing utility. See also the --log_prefix // flag for controlling the log-message prefix on an // application-wide basis. kNoLogPrefix = -1 }; // LogStream inherit from non-DLL-exported class (std::ostrstream) // and VC++ produces a warning for this situation. // However, MSDN says "C4275 can be ignored in Microsoft Visual C++ // 2005 if you are deriving from a type in the Standard C++ Library" // http://msdn.microsoft.com/en-us/library/3tdb471s(VS.80).aspx // Let's just ignore the warning. GLOG_MSVC_PUSH_DISABLE_WARNING(4275) class GOOGLE_GLOG_DLL_DECL LogStream : public std::ostream { GLOG_MSVC_POP_WARNING() public: LogStream(char *buf, int len, int ctr) : 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 }; public: // icc 8 requires this typedef to avoid an internal compiler error. typedef void (LogMessage::*SendMethod)(); LogMessage(const char* file, int line, LogSeverity severity, int ctr, SendMethod send_method); // Two special constructors that generate reduced amounts of code at // LOG call sites for common cases. // Used for LOG(INFO): Implied are: // severity = INFO, ctr = 0, send_method = &LogMessage::SendToLog. // // Using this constructor instead of the more complex constructor above // saves 19 bytes per call site. LogMessage(const char* file, int line); // Used for LOG(severity) where severity != INFO. Implied // are: ctr = 0, send_method = &LogMessage::SendToLog // // Using this constructor instead of the more complex constructor above // saves 17 bytes per call site. LogMessage(const char* file, int line, LogSeverity severity); // 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). // Implied are: ctr = 0, send_method = &LogMessage::SaveOrSendToLog. 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); ~LogMessage(); // Flush a buffered message to the sink set in the constructor. Always // called by the destructor, it may also be called from elsewhere if // needed. Only the first call is actioned; any later ones are ignored. void Flush(); // An arbitrary limit on the length of a single log message. This // is so that streaming can be done more efficiently. static const size_t kMaxLogMessageLen; // Theses should not be called directly outside of logging.*, // only passed as SendMethod arguments to other LogMessage methods: void SendToLog(); // Actually dispatch to the logs void SendToSyslogAndLog(); // Actually dispatch to syslog and the logs // Call abort() or similar to perform LOG(FATAL) crash. static void __attribute__ ((noreturn)) Fail(); std::ostream& stream(); int preserved_errno() const; // Must be called without the log_mutex held. (L < log_mutex) static int64 num_messages(int severity); struct LogMessageData; private: // Fully internal SendMethod cases: void SendToSinkAndLog(); // Send to sink if provided and dispatch to the logs void SendToSink(); // Send to sink if provided, do nothing otherwise. // 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)()); // 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. LogMessageData* allocated_; LogMessageData* data_; friend class LogDestination; LogMessage(const LogMessage&); void operator=(const LogMessage&); }; // This class happens to be thread-hostile because all instances share // a single data buffer, but since it can only be created just before // the process dies, we don't worry so much. class GOOGLE_GLOG_DLL_DECL LogMessageFatal : public LogMessage { public: LogMessageFatal(const char* file, int line); LogMessageFatal(const char* file, int line, const CheckOpString& result); __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 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) google::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) { if (t == NULL) { LogMessageFatal(file, line, new std::string(names)); } 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 // LogStream you'll get an assert saying as much at runtime. GOOGLE_GLOG_DLL_DECL std::ostream& operator<<(std::ostream &os, const PRIVATE_Counter&); // Derived class for PLOG*() above. class GOOGLE_GLOG_DLL_DECL ErrnoLogMessage : public LogMessage { public: ErrnoLogMessage(const char* file, int line, LogSeverity severity, int ctr, void (LogMessage::*send_method)()); // Postpends ": strerror(errno) [errno]". ~ErrnoLogMessage(); private: ErrnoLogMessage(const ErrnoLogMessage&); void operator=(const ErrnoLogMessage&); }; // This class is used to explicitly ignore values in the conditional // logging macros. This avoids compiler warnings like "value computed // is not used" and "statement has no effect". class GOOGLE_GLOG_DLL_DECL LogMessageVoidify { public: LogMessageVoidify() { } // This has to be an operator with a precedence lower than << but // higher than ?: void operator&(std::ostream&) { } }; // Flushes all log files that contains messages that are at least of // the specified severity level. Thread-safe. GOOGLE_GLOG_DLL_DECL void FlushLogFiles(LogSeverity min_severity); // Flushes all log files that contains messages that are at least of // the specified severity level. Thread-hostile because it ignores // locking -- used for catastrophic failures. GOOGLE_GLOG_DLL_DECL void FlushLogFilesUnsafe(LogSeverity min_severity); // // Set the destination to which a particular severity level of log // messages is sent. If base_filename is "", it means "don't log this // severity". Thread-safe. // GOOGLE_GLOG_DLL_DECL void SetLogDestination(LogSeverity severity, const char* base_filename); // // Set the basename of the symlink to the latest log file at a given // severity. If symlink_basename is empty, do not make a symlink. If // you don't call this function, the symlink basename is the // invocation name of the program. Thread-safe. // GOOGLE_GLOG_DLL_DECL void SetLogSymlink(LogSeverity severity, const char* symlink_basename); // // Used to send logs to some other kind of destination // Users should subclass LogSink and override send to do whatever they want. // Implementations must be thread-safe because a shared instance will // be called from whichever thread ran the LOG(XXX) line. class GOOGLE_GLOG_DLL_DECL LogSink { public: virtual ~LogSink(); // Sink's logging logic (message_len is such as to exclude '\n' at the end). // This method can't use LOG() or CHECK() as logging system mutex(s) are held // during this call. virtual void send(LogSeverity severity, const char* full_filename, const char* base_filename, int line, const struct ::tm* tm_time, const char* message, size_t message_len) = 0; // Redefine this to implement waiting for // the sink's logging logic to complete. // It will be called after each send() returns, // but before that LogMessage exits or crashes. // By default this function does nothing. // Using this function one can implement complex logic for send() // that itself involves logging; and do all this w/o causing deadlocks and // inconsistent rearrangement of log messages. // E.g. if a LogSink has thread-specific actions, the send() method // can simply add the message to a queue and wake up another thread that // handles real logging while itself making some LOG() calls; // WaitTillSent() can be implemented to wait for that logic to complete. // See our unittest for an example. virtual void WaitTillSent(); // Returns the normal text output of the log message. // Can be useful to implement send(). static std::string ToString(LogSeverity severity, const char* file, int line, const struct ::tm* tm_time, const char* message, size_t message_len); }; // Add or remove a LogSink as a consumer of logging data. Thread-safe. GOOGLE_GLOG_DLL_DECL void AddLogSink(LogSink *destination); GOOGLE_GLOG_DLL_DECL void RemoveLogSink(LogSink *destination); // // Specify an "extension" added to the filename specified via // SetLogDestination. This applies to all severity levels. It's // often used to append the port we're listening on to the logfile // name. Thread-safe. // GOOGLE_GLOG_DLL_DECL void SetLogFilenameExtension( const char* filename_extension); // // Make it so that all log messages of at least a particular severity // are logged to stderr (in addition to logging to the usual log // file(s)). Thread-safe. // GOOGLE_GLOG_DLL_DECL void SetStderrLogging(LogSeverity min_severity); // // Make it so that all log messages go only to stderr. Thread-safe. // GOOGLE_GLOG_DLL_DECL void LogToStderr(); // // Make it so that all log messages of at least a particular severity are // logged via email to a list of addresses (in addition to logging to the // usual log file(s)). The list of addresses is just a string containing // the email addresses to send to (separated by spaces, say). Thread-safe. // GOOGLE_GLOG_DLL_DECL void SetEmailLogging(LogSeverity min_severity, const char* addresses); // A simple function that sends email. dest is a commma-separated // list of addressess. Thread-safe. GOOGLE_GLOG_DLL_DECL bool SendEmail(const char *dest, const char *subject, const char *body); GOOGLE_GLOG_DLL_DECL const std::vector<std::string>& GetLoggingDirectories(); // For tests only: Clear the internal [cached] list of logging directories to // force a refresh the next time GetLoggingDirectories is called. // Thread-hostile. void TestOnly_ClearLoggingDirectoriesList(); // Returns a set of existing temporary directories, which will be a // subset of the directories returned by GetLogginDirectories(). // Thread-safe. GOOGLE_GLOG_DLL_DECL void GetExistingTempDirectories( std::vector<std::string>* list); // Print any fatal message again -- useful to call from signal handler // so that the last thing in the output is the fatal message. // Thread-hostile, but a race is unlikely. GOOGLE_GLOG_DLL_DECL void ReprintFatalMessage(); // Truncate a log file that may be the append-only output of multiple // processes and hence can't simply be renamed/reopened (typically a // stdout/stderr). If the file "path" is > "limit" bytes, copy the // last "keep" bytes to offset 0 and truncate the rest. Since we could // be racing with other writers, this approach has the potential to // lose very small amounts of data. For security, only follow symlinks // if the path is /proc/self/fd/* GOOGLE_GLOG_DLL_DECL void TruncateLogFile(const char *path, int64 limit, int64 keep); // Truncate stdout and stderr if they are over the value specified by // --max_log_size; keep the final 1MB. This function has the same // race condition as TruncateLogFile. GOOGLE_GLOG_DLL_DECL void TruncateStdoutStderr(); // Return the string representation of the provided LogSeverity level. // Thread-safe. GOOGLE_GLOG_DLL_DECL const char* GetLogSeverityName(LogSeverity severity); // --------------------------------------------------------------------- // Implementation details that are not useful to most clients // --------------------------------------------------------------------- // A Logger is the interface used by logging modules to emit entries // to a log. A typical implementation will dump formatted data to a // sequence of files. We also provide interfaces that will forward // the data to another thread so that the invoker never blocks. // Implementations should be thread-safe since the logging system // will write to them from multiple threads. namespace base { class GOOGLE_GLOG_DLL_DECL Logger { public: virtual ~Logger(); // Writes "message[0,message_len-1]" corresponding to an event that // occurred at "timestamp". If "force_flush" is true, the log file // is flushed immediately. // // The input message has already been formatted as deemed // appropriate by the higher level logging facility. For example, // textual log messages already contain timestamps, and the // file:linenumber header. virtual void Write(bool force_flush, time_t timestamp, const char* message, int message_len) = 0; // Flush any buffered messages virtual void Flush() = 0; // Get the current LOG file size. // The returned value is approximate since some // logged data may not have been flushed to disk yet. virtual uint32 LogSize() = 0; }; // Get the logger for the specified severity level. The logger // remains the property of the logging module and should not be // deleted by the caller. Thread-safe. extern GOOGLE_GLOG_DLL_DECL Logger* GetLogger(LogSeverity level); // Set the logger for the specified severity level. The logger // becomes the property of the logging module and should not // be deleted by the caller. Thread-safe. extern GOOGLE_GLOG_DLL_DECL void SetLogger(LogSeverity level, Logger* logger); } // glibc has traditionally implemented two incompatible versions of // strerror_r(). There is a poorly defined convention for picking the // version that we want, but it is not clear whether it even works with // all versions of glibc. // So, instead, we provide this wrapper that automatically detects the // version that is in use, and then implements POSIX semantics. // N.B. In addition to what POSIX says, we also guarantee that "buf" will // 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 { public: // Initialize the LogStream so the messages can be written somewhere // (they'll never be actually displayed). This will be needed if a // 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 // will be needed if NullStream& converted to LogStream& (e.g. as a // result of a conditional expression). char message_buffer_[2]; }; // Do nothing. This operator is inline, allowing the message to be // compiled away. The message will not be compiled away if we do // something like (flag ? LOG(INFO) : LOG(ERROR)) << message; when // SKIP_LOG=WARNING. In those cases, NullStream will be implicitly // converted to LogStream and the message will be computed and then // quietly discarded. template<class T> 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: NullStreamFatal() { } NullStreamFatal(const char* file, int line, const CheckOpString& result) : NullStream(file, line, result) { } __attribute__ ((noreturn)) ~NullStreamFatal() throw () { _exit(1); } }; // Install a signal handler that will dump signal information and a stack // trace when the program crashes on certain signals. We'll install the // signal handler for the following signals. // // SIGSEGV, SIGILL, SIGFPE, SIGABRT, SIGBUS, and SIGTERM. // // By default, the signal handler will write the failure dump to the // standard error. You can customize the destination by installing your // own writer function by InstallFailureWriter() below. // // Note on threading: // // The function should be called before threads are created, if you want // to use the failure signal handler for all threads. The stack trace // will be shown only for the thread that receives the signal. In other // words, stack traces of other threads won't be shown. GOOGLE_GLOG_DLL_DECL void InstallFailureSignalHandler(); // Installs a function that is used for writing the failure dump. "data" // is the pointer to the beginning of a message to be written, and "size" // is the size of the message. You should not expect the data is // terminated with '\0'. GOOGLE_GLOG_DLL_DECL void InstallFailureWriter( void (*writer)(const char* data, int size)); } #endif // _LOGGING_H_ aBuild/glog/include/glog/raw_logging.h
New file @@ -0,0 +1,185 @@ // Copyright (c) 2006, 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: Maxim Lifantsev // // Thread-safe logging routines that do not allocate any memory or // acquire any locks, and can therefore be used by low-level memory // allocation and synchronization code. #ifndef BASE_RAW_LOGGING_H_ #define BASE_RAW_LOGGING_H_ #include <time.h> namespace google { #include "glog/log_severity.h" #include "glog/vlog_is_on.h" // Annoying stuff for windows -- makes sure clients can import these functions #ifndef GOOGLE_GLOG_DLL_DECL # if defined(_WIN32) && !defined(__CYGWIN__) # define GOOGLE_GLOG_DLL_DECL __declspec(dllimport) # else # define GOOGLE_GLOG_DLL_DECL # endif #endif // This is similar to LOG(severity) << format... and VLOG(level) << format.., // but // * it is to be used ONLY by low-level modules that can't use normal LOG() // * it is desiged to be a low-level logger that does not allocate any // memory and does not need any locks, hence: // * it logs straight and ONLY to STDERR w/o buffering // * it uses an explicit format and arguments list // * it will silently chop off really long message strings // Usage example: // RAW_LOG(ERROR, "Failed foo with %i: %s", status, error); // RAW_VLOG(3, "status is %i", status); // These will print an almost standard log lines like this to stderr only: // E0821 211317 file.cc:123] RAW: Failed foo with 22: bad_file // I0821 211317 file.cc:142] RAW: status is 20 #define RAW_LOG(severity, ...) \ do { \ switch (google::GLOG_ ## severity) { \ case 0: \ RAW_LOG_INFO(__VA_ARGS__); \ break; \ case 1: \ RAW_LOG_WARNING(__VA_ARGS__); \ break; \ case 2: \ RAW_LOG_ERROR(__VA_ARGS__); \ break; \ case 3: \ RAW_LOG_FATAL(__VA_ARGS__); \ break; \ default: \ break; \ } \ } while (0) // The following STRIP_LOG testing is performed in the header file so that it's // possible to completely compile out the logging code and the log messages. #if STRIP_LOG == 0 #define RAW_VLOG(verboselevel, ...) \ do { \ if (VLOG_IS_ON(verboselevel)) { \ RAW_LOG_INFO(__VA_ARGS__); \ } \ } while (0) #else #define RAW_VLOG(verboselevel, ...) RawLogStub__(0, __VA_ARGS__) #endif // STRIP_LOG == 0 #if STRIP_LOG == 0 #define RAW_LOG_INFO(...) google::RawLog__(google::GLOG_INFO, \ __FILE__, __LINE__, __VA_ARGS__) #else #define RAW_LOG_INFO(...) google::RawLogStub__(0, __VA_ARGS__) #endif // STRIP_LOG == 0 #if STRIP_LOG <= 1 #define RAW_LOG_WARNING(...) google::RawLog__(google::GLOG_WARNING, \ __FILE__, __LINE__, __VA_ARGS__) #else #define RAW_LOG_WARNING(...) google::RawLogStub__(0, __VA_ARGS__) #endif // STRIP_LOG <= 1 #if STRIP_LOG <= 2 #define RAW_LOG_ERROR(...) google::RawLog__(google::GLOG_ERROR, \ __FILE__, __LINE__, __VA_ARGS__) #else #define RAW_LOG_ERROR(...) google::RawLogStub__(0, __VA_ARGS__) #endif // STRIP_LOG <= 2 #if STRIP_LOG <= 3 #define RAW_LOG_FATAL(...) google::RawLog__(google::GLOG_FATAL, \ __FILE__, __LINE__, __VA_ARGS__) #else #define RAW_LOG_FATAL(...) \ do { \ google::RawLogStub__(0, __VA_ARGS__); \ exit(1); \ } while (0) #endif // STRIP_LOG <= 3 // Similar to CHECK(condition) << message, // but for low-level modules: we use only RAW_LOG that does not allocate memory. // We do not want to provide args list here to encourage this usage: // if (!cond) RAW_LOG(FATAL, "foo ...", hard_to_compute_args); // so that the args are not computed when not needed. #define RAW_CHECK(condition, message) \ do { \ if (!(condition)) { \ RAW_LOG(FATAL, "Check %s failed: %s", #condition, message); \ } \ } while (0) // Debug versions of RAW_LOG and RAW_CHECK #ifndef NDEBUG #define RAW_DLOG(severity, ...) RAW_LOG(severity, __VA_ARGS__) #define RAW_DCHECK(condition, message) RAW_CHECK(condition, message) #else // NDEBUG #define RAW_DLOG(severity, ...) \ while (false) \ RAW_LOG(severity, __VA_ARGS__) #define RAW_DCHECK(condition, message) \ while (false) \ RAW_CHECK(condition, message) #endif // NDEBUG // Stub log function used to work around for unused variable warnings when // building with STRIP_LOG > 0. static inline void RawLogStub__(int /* ignored */, ...) { } // Helper function to implement RAW_LOG and RAW_VLOG // Logs format... at "severity" level, reporting it // as called from file:line. // This does not allocate memory or acquire locks. GOOGLE_GLOG_DLL_DECL void RawLog__(LogSeverity severity, const char* file, int line, const char* format, ...) __attribute__((__format__ (__printf__, 4, 5))); // Hack to propagate time information into this module so that // this module does not have to directly call localtime_r(), // which could allocate memory. GOOGLE_GLOG_DLL_DECL void RawLog__SetLastTime(const struct tm& t, int usecs); } #endif // BASE_RAW_LOGGING_H_ aBuild/glog/include/glog/stl_logging.h
New file @@ -0,0 +1,220 @@ // Copyright (c) 2003, 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. // // Stream output operators for STL containers; to be used for logging *only*. // Inclusion of this file lets you do: // // list<string> x; // LOG(INFO) << "data: " << x; // vector<int> v1, v2; // CHECK_EQ(v1, v2); // // If you want to use this header file with hash maps or slist, you // need to define macros before including this file: // // - GLOG_STL_LOGGING_FOR_UNORDERED - <unordered_map> and <unordered_set> // - GLOG_STL_LOGGING_FOR_TR1_UNORDERED - <tr1/unordered_(map|set)> // - GLOG_STL_LOGGING_FOR_EXT_HASH - <ext/hash_(map|set)> // - GLOG_STL_LOGGING_FOR_EXT_SLIST - <ext/slist> // #ifndef UTIL_GTL_STL_LOGGING_INL_H_ #define UTIL_GTL_STL_LOGGING_INL_H_ #if !1 # error We do not support stl_logging for this compiler #endif #include <deque> #include <list> #include <map> #include <ostream> #include <set> #include <utility> #include <vector> #ifdef GLOG_STL_LOGGING_FOR_UNORDERED # include <unordered_map> # include <unordered_set> #endif #ifdef GLOG_STL_LOGGING_FOR_TR1_UNORDERED # include <tr1/unordered_map> # include <tr1/unordered_set> #endif #ifdef GLOG_STL_LOGGING_FOR_EXT_HASH # include <ext/hash_set> # include <ext/hash_map> #endif #ifdef GLOG_STL_LOGGING_FOR_EXT_SLIST # include <ext/slist> #endif // Forward declare these two, and define them after all the container streams // operators so that we can recurse from pair -> container -> container -> pair // properly. template<class First, class Second> std::ostream& operator<<(std::ostream& out, const std::pair<First, Second>& p); namespace google { template<class Iter> void PrintSequence(std::ostream& out, Iter begin, Iter end); } #define OUTPUT_TWO_ARG_CONTAINER(Sequence) \ template<class T1, class T2> \ inline std::ostream& operator<<(std::ostream& out, \ const Sequence<T1, T2>& seq) { \ google::PrintSequence(out, seq.begin(), seq.end()); \ return out; \ } OUTPUT_TWO_ARG_CONTAINER(std::vector) OUTPUT_TWO_ARG_CONTAINER(std::deque) OUTPUT_TWO_ARG_CONTAINER(std::list) #ifdef GLOG_STL_LOGGING_FOR_EXT_SLIST OUTPUT_TWO_ARG_CONTAINER(__gnu_cxx::slist) #endif #undef OUTPUT_TWO_ARG_CONTAINER #define OUTPUT_THREE_ARG_CONTAINER(Sequence) \ template<class T1, class T2, class T3> \ inline std::ostream& operator<<(std::ostream& out, \ const Sequence<T1, T2, T3>& seq) { \ google::PrintSequence(out, seq.begin(), seq.end()); \ return out; \ } OUTPUT_THREE_ARG_CONTAINER(std::set) OUTPUT_THREE_ARG_CONTAINER(std::multiset) #undef OUTPUT_THREE_ARG_CONTAINER #define OUTPUT_FOUR_ARG_CONTAINER(Sequence) \ template<class T1, class T2, class T3, class T4> \ inline std::ostream& operator<<(std::ostream& out, \ const Sequence<T1, T2, T3, T4>& seq) { \ google::PrintSequence(out, seq.begin(), seq.end()); \ return out; \ } OUTPUT_FOUR_ARG_CONTAINER(std::map) OUTPUT_FOUR_ARG_CONTAINER(std::multimap) #ifdef GLOG_STL_LOGGING_FOR_UNORDERED OUTPUT_FOUR_ARG_CONTAINER(std::unordered_set) OUTPUT_FOUR_ARG_CONTAINER(std::unordered_multiset) #endif #ifdef GLOG_STL_LOGGING_FOR_TR1_UNORDERED OUTPUT_FOUR_ARG_CONTAINER(std::tr1::unordered_set) OUTPUT_FOUR_ARG_CONTAINER(std::tr1::unordered_multiset) #endif #ifdef GLOG_STL_LOGGING_FOR_EXT_HASH OUTPUT_FOUR_ARG_CONTAINER(__gnu_cxx::hash_set) OUTPUT_FOUR_ARG_CONTAINER(__gnu_cxx::hash_multiset) #endif #undef OUTPUT_FOUR_ARG_CONTAINER #define OUTPUT_FIVE_ARG_CONTAINER(Sequence) \ template<class T1, class T2, class T3, class T4, class T5> \ inline std::ostream& operator<<(std::ostream& out, \ const Sequence<T1, T2, T3, T4, T5>& seq) { \ google::PrintSequence(out, seq.begin(), seq.end()); \ return out; \ } #ifdef GLOG_STL_LOGGING_FOR_UNORDERED OUTPUT_FIVE_ARG_CONTAINER(std::unordered_map) OUTPUT_FIVE_ARG_CONTAINER(std::unordered_multimap) #endif #ifdef GLOG_STL_LOGGING_FOR_TR1_UNORDERED OUTPUT_FIVE_ARG_CONTAINER(std::tr1::unordered_map) OUTPUT_FIVE_ARG_CONTAINER(std::tr1::unordered_multimap) #endif #ifdef GLOG_STL_LOGGING_FOR_EXT_HASH OUTPUT_FIVE_ARG_CONTAINER(__gnu_cxx::hash_map) OUTPUT_FIVE_ARG_CONTAINER(__gnu_cxx::hash_multimap) #endif #undef OUTPUT_FIVE_ARG_CONTAINER template<class First, class Second> inline std::ostream& operator<<(std::ostream& out, const std::pair<First, Second>& p) { out << '(' << p.first << ", " << p.second << ')'; return out; } namespace google { template<class Iter> inline void PrintSequence(std::ostream& out, Iter begin, Iter end) { // Output at most 100 elements -- appropriate if used for logging. for (int i = 0; begin != end && i < 100; ++i, ++begin) { if (i > 0) out << ' '; out << *begin; } if (begin != end) { out << " ..."; } } } // Note that this is technically undefined behavior! We are adding things into // the std namespace for a reason though -- we are providing new operations on // types which are themselves defined with this namespace. Without this, these // operator overloads cannot be found via ADL. If these definitions are not // found via ADL, they must be #included before they're used, which requires // this header to be included before apparently independent other headers. // // For example, base/logging.h defines various template functions to implement // CHECK_EQ(x, y) and stream x and y into the log in the event the check fails. // It does so via the function template MakeCheckOpValueString: // template<class T> // void MakeCheckOpValueString(strstream* ss, const T& v) { // (*ss) << v; // } // Because 'glog/logging.h' is included before 'glog/stl_logging.h', // subsequent CHECK_EQ(v1, v2) for vector<...> typed variable v1 and v2 can only // find these operator definitions via ADL. // // Even this solution has problems -- it may pull unintended operators into the // namespace as well, allowing them to also be found via ADL, and creating code // that only works with a particular order of includes. Long term, we need to // move all of the *definitions* into namespace std, bet we need to ensure no // one references them first. This lets us take that step. We cannot define them // in both because that would create ambiguous overloads when both are found. namespace std { using ::operator<<; } #endif // UTIL_GTL_STL_LOGGING_INL_H_ aBuild/glog/include/glog/vlog_is_on.h
New file @@ -0,0 +1,129 @@ // Copyright (c) 1999, 2007, 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 and many others // // Defines the VLOG_IS_ON macro that controls the variable-verbosity // conditional logging. // // It's used by VLOG and VLOG_IF in logging.h // and by RAW_VLOG in raw_logging.h to trigger the logging. // // It can also be used directly e.g. like this: // if (VLOG_IS_ON(2)) { // // do some logging preparation and logging // // that can't be accomplished e.g. via just VLOG(2) << ...; // } // // The truth value that VLOG_IS_ON(level) returns is determined by // the three verbosity level flags: // --v=<n> Gives the default maximal active V-logging level; // 0 is the default. // Normally positive values are used for V-logging levels. // --vmodule=<str> Gives the per-module maximal V-logging levels to override // the value given by --v. // E.g. "my_module=2,foo*=3" would change the logging level // for all code in source files "my_module.*" and "foo*.*" // ("-inl" suffixes are also disregarded for this matching). // // SetVLOGLevel helper function is provided to do limited dynamic control over // V-logging by overriding the per-module settings given via --vmodule flag. // // CAVEAT: --vmodule functionality is not available in non gcc compilers. // #ifndef BASE_VLOG_IS_ON_H_ #define BASE_VLOG_IS_ON_H_ #include "glog/log_severity.h" // Annoying stuff for windows -- makes sure clients can import these functions #ifndef GOOGLE_GLOG_DLL_DECL # if defined(_WIN32) && !defined(__CYGWIN__) # define GOOGLE_GLOG_DLL_DECL __declspec(dllimport) # else # define GOOGLE_GLOG_DLL_DECL # endif #endif #if defined(__GNUC__) // We emit an anonymous static int* variable at every VLOG_IS_ON(n) site. // (Normally) the first time every VLOG_IS_ON(n) site is hit, // we determine what variable will dynamically control logging at this site: // it's either FLAGS_v or an appropriate internal variable // matching the current source file that represents results of // parsing of --vmodule flag and/or SetVLOGLevel calls. #define VLOG_IS_ON(verboselevel) \ __extension__ \ ({ static google::int32* vlocal__ = &google::kLogSiteUninitialized; \ google::int32 verbose_level__ = (verboselevel); \ (*vlocal__ >= verbose_level__) && \ ((vlocal__ != &google::kLogSiteUninitialized) || \ (google::InitVLOG3__(&vlocal__, &FLAGS_v, \ __FILE__, verbose_level__))); }) #else // GNU extensions not available, so we do not support --vmodule. // Dynamic value of FLAGS_v always controls the logging level. #define VLOG_IS_ON(verboselevel) (FLAGS_v >= (verboselevel)) #endif // Set VLOG(_IS_ON) level for module_pattern to log_level. // This lets us dynamically control what is normally set by the --vmodule flag. // Returns the level that previously applied to module_pattern. // NOTE: To change the log level for VLOG(_IS_ON) sites // that have already executed after/during InitGoogleLogging, // one needs to supply the exact --vmodule pattern that applied to them. // (If no --vmodule pattern applied to them // the value of FLAGS_v will continue to control them.) extern GOOGLE_GLOG_DLL_DECL int SetVLOGLevel(const char* module_pattern, int log_level); // Various declarations needed for VLOG_IS_ON above: ========================= // Special value used to indicate that a VLOG_IS_ON site has not been // initialized. We make this a large value, so the common-case check // of "*vlocal__ >= verbose_level__" in VLOG_IS_ON definition // passes in such cases and InitVLOG3__ is then triggered. extern google::int32 kLogSiteUninitialized; // Helper routine which determines the logging info for a particalur VLOG site. // site_flag is the address of the site-local pointer to the controlling // verbosity level // site_default is the default to use for *site_flag // fname is the current source file name // verbose_level is the argument to VLOG_IS_ON // We will return the return value for VLOG_IS_ON // and if possible set *site_flag appropriately. extern GOOGLE_GLOG_DLL_DECL bool InitVLOG3__( google::int32** site_flag, google::int32* site_default, const char* fname, google::int32 verbose_level); #endif // BASE_VLOG_IS_ON_H_ aBuild/glog/lib/libglog.aBinary files differ
aBuild/glog/lib/libglog.so.0.0.0Binary files differ
aBuild/glog/lib/pkgconfig/libglog.pc
New file @@ -0,0 +1,10 @@ prefix=/home/bsk/work/work_git/GitFork/glog/../aBuild/glog exec_prefix=${prefix} libdir=${exec_prefix}/lib includedir=${prefix}/include Name: libglog Description: Google Log (glog) C++ logging framework Version: 0.3.5 Libs: -L${libdir} -lglog Cflags: -I${includedir} aBuild/glog/share/doc/glog-0.3.5/AUTHORS
New file @@ -0,0 +1,24 @@ # This is the official list of glog authors for copyright purposes. # This file is distinct from the CONTRIBUTORS files. # See the latter for an explanation. # # Names should be added to this file as: # Name or Organization <email address> # The email address is not required for organizations. # # Please keep the list sorted. Abhishek Dasgupta <abhi2743@gmail.com> Abhishek Parmar <abhishek@orng.net> Andrew Schwartzmeyer <andrew@schwartzmeyer.com> Andy Ying <andy@trailofbits.com> Brian Silverman <bsilver16384@gmail.com> Google Inc. Guillaume Dumont <dumont.guillaume@gmail.com> Michael Tanner <michael@tannertaxpro.com> MiniLight <MiniLightAR@Gmail.com> romange <romange@users.noreply.github.com> Sergiu Deitsch <sergiu.deitsch@gmail.com> tbennun <tbennun@gmail.com> Teddy Reed <teddy@prosauce.org> Zhongming Qu <qzmfranklin@gmail.com> aBuild/glog/share/doc/glog-0.3.5/COPYING
New file @@ -0,0 +1,65 @@ Copyright (c) 2008, Google Inc. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Google Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. A function gettimeofday in utilities.cc is based on http://www.google.com/codesearch/p?hl=en#dR3YEbitojA/COPYING&q=GetSystemTimeAsFileTime%20license:bsd The license of this code is: Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> and contributors All Rights Reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. 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. 3. Neither the name(s) of the above-listed copyright holder(s) 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. aBuild/glog/share/doc/glog-0.3.5/ChangeLog
New file @@ -0,0 +1,84 @@ 2013-02-01 Google Inc. <opensource@google.com> * google-glog: version 0.3.3 * Add --disable-rtti option for configure. * Visual Studio build and test fix. * QNX build fix (thanks vanuan). * Reduce warnings. * Fixed LOG_SYSRESULT (thanks ukai). * FreeBSD build fix (thanks yyanagisawa). * Clang build fix. * Now users can re-initialize glog after ShutdownGoogleLogging. * Color output support by GLOG_colorlogtostderr (thanks alexs). * Now glog's ABI around flags are compatible with gflags. * Document mentions how to modify flags from user programs. 2012-01-12 Google Inc. <opensource@google.com> * google-glog: version 0.3.2 * Clang support. * Demangler and stacktrace improvement for newer GCCs. * Now fork(2) doesn't mess up log files. * Make valgrind happier. * Reduce warnings for more -W options. * Provide a workaround for ERROR defined by windows.h. 2010-06-15 Google Inc. <opensource@google.com> * google-glog: version 0.3.1 * GLOG_* environment variables now work even when gflags is installed. * Snow leopard support. * Now we can build and test from out side tree. * Add DCHECK_NOTNULL. * Add ShutdownGoogleLogging to close syslog (thanks DGunchev) * Fix --enable-frame-pointers option (thanks kazuki.ohta) * Fix libunwind detection (thanks giantchen) 2009-07-30 Google Inc. <opensource@google.com> * google-glog: version 0.3.0 * Fix a deadlock happened when user uses glog with recent gflags. * Suppress several unnecessary warnings (thanks keir). * NetBSD and OpenBSD support. * Use Win32API GetComputeNameA properly (thanks magila). * Fix user name detection for Windows (thanks ademin). * Fix several minor bugs. 2009-04-10 Google Inc. <opensource@google.com> * google-glog: version 0.2.1 * Fix timestamps of VC++ version. * Add pkg-config support (thanks Tomasz) * Fix build problem when building with gtest (thanks Michael) * Add --with-gflags option for configure (thanks Michael) * Fixes for GCC 4.4 (thanks John) 2009-01-23 Google Inc. <opensource@google.com> * google-glog: version 0.2 * Add initial Windows VC++ support. * Google testing/mocking frameworks integration. * Link pthread library automatically. * Flush logs in signal handlers. * Add macros LOG_TO_STRING, LOG_AT_LEVEL, DVLOG, and LOG_TO_SINK_ONLY. * Log microseconds. * Add --log_backtrace_at option. * Fix some minor bugs. 2008-11-18 Google Inc. <opensource@google.com> * google-glog: version 0.1.2 * Add InstallFailureSignalHandler(). (satorux) * Re-organize the way to produce stacktraces. * Don't define unnecessary macro DISALLOW_EVIL_CONSTRUCTORS. 2008-10-15 Google Inc. <opensource@google.com> * google-glog: version 0.1.1 * Support symbolize for MacOSX 10.5. * BUG FIX: --vmodule didn't work with gflags. * BUG FIX: symbolize_unittest failed with GCC 4.3. * Several fixes on the document. 2008-10-07 Google Inc. <opensource@google.com> * google-glog: initial release: The glog package contains a library that implements application-level logging. This library provides logging APIs based on C++-style streams and various helper macros. aBuild/glog/share/doc/glog-0.3.5/INSTALL
New file @@ -0,0 +1,297 @@ Installation Instructions ************************* Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. This file is free documentation; the Free Software Foundation gives unlimited permission to copy, distribute and modify it. Glog-Specific Install Notes ================================ *** NOTE FOR 64-BIT LINUX SYSTEMS The glibc built-in stack-unwinder on 64-bit systems has some problems with the glog libraries. (In particular, if you are using InstallFailureSignalHandler(), the signal may be raised in the middle of malloc, holding some malloc-related locks when they invoke the stack unwinder. The built-in stack unwinder may call malloc recursively, which may require the thread to acquire a lock it already holds: deadlock.) For that reason, if you use a 64-bit system and you need InstallFailureSignalHandler(), we strongly recommend you install libunwind before trying to configure or install google glog. libunwind can be found at http://download.savannah.nongnu.org/releases/libunwind/libunwind-snap-070410.tar.gz Even if you already have libunwind installed, you will probably still need to install from the snapshot to get the latest version. CAUTION: if you install libunwind from the URL above, be aware that you may have trouble if you try to statically link your binary with glog: that is, if you link with 'gcc -static -lgcc_eh ...'. This is because both libunwind and libgcc implement the same C++ exception handling APIs, but they implement them differently on some platforms. This is not likely to be a problem on ia64, but may be on x86-64. Also, if you link binaries statically, make sure that you add -Wl,--eh-frame-hdr to your linker options. This is required so that libunwind can find the information generated by the compiler required for stack unwinding. Using -static is rare, though, so unless you know this will affect you it probably won't. If you cannot or do not wish to install libunwind, you can still try to use two kinds of stack-unwinder: 1. glibc built-in stack-unwinder and 2. frame pointer based stack-unwinder. 1. As we already mentioned, glibc's unwinder has a deadlock issue. However, if you don't use InstallFailureSignalHandler() or you don't worry about the rare possibilities of deadlocks, you can use this stack-unwinder. If you specify no options and libunwind isn't detected on your system, the configure script chooses this unwinder by default. 2. The frame pointer based stack unwinder requires that your application, the glog library, and system libraries like libc, all be compiled with a frame pointer. This is *not* the default for x86-64. If you are on x86-64 system, know that you have a set of system libraries with frame-pointers enabled, and compile all your applications with -fno-omit-frame-pointer, then you can enable the frame pointer based stack unwinder by passing the --enable-frame-pointers flag to configure. Basic Installation ================== Briefly, the shell commands `./configure; make; make install' should configure, build, and install this package. The following more-detailed instructions are generic; see the `README.md' file for instructions specific to this package. The `configure' shell script attempts to guess correct values for various system-dependent variables used during compilation. It uses those values to create a `Makefile' in each directory of the package. It may also create one or more `.h' files containing system-dependent definitions. Finally, it creates a shell script `config.status' that you can run in the future to recreate the current configuration, and a file `config.log' containing compiler output (useful mainly for debugging `configure'). It can also use an optional file (typically called `config.cache' and enabled with `--cache-file=config.cache' or simply `-C') that saves the results of its tests to speed up reconfiguring. Caching is disabled by default to prevent problems with accidental use of stale cache files. If you need to do unusual things to compile the package, please try to figure out how `configure' could check whether to do them, and mail diffs or instructions to the address given in the `README.md' so they can be considered for the next release. If you are using the cache, and at some point `config.cache' contains results you don't want to keep, you may remove or edit it. The file `configure.ac' (or `configure.in') is used to create `configure' by a program called `autoconf'. You need `configure.ac' if you want to change it or regenerate `configure' using a newer version of `autoconf'. The simplest way to compile this package is: 1. `cd' to the directory containing the package's source code and type `./configure' to configure the package for your system. Running `configure' might take a while. While running, it prints some messages telling which features it is checking for. 2. Type `make' to compile the package. 3. Optionally, type `make check' to run any self-tests that come with the package. 4. Type `make install' to install the programs and any data files and documentation. 5. You can remove the program binaries and object files from the source code directory by typing `make clean'. To also remove the files that `configure' created (so you can compile the package for a different kind of computer), type `make distclean'. There is also a `make maintainer-clean' target, but that is intended mainly for the package's developers. If you use it, you may have to get all sorts of other programs in order to regenerate files that came with the distribution. 6. Often, you can also type `make uninstall' to remove the installed files again. Compilers and Options ===================== Some systems require unusual options for compilation or linking that the `configure' script does not know about. Run `./configure --help' for details on some of the pertinent environment variables. You can give `configure' initial values for configuration parameters by setting variables in the command line or in the environment. Here is an example: ./configure CC=c99 CFLAGS=-g LIBS=-lposix *Note Defining Variables::, for more details. Compiling For Multiple Architectures ==================================== You can compile the package for more than one kind of computer at the same time, by placing the object files for each architecture in their own directory. To do this, you can use GNU `make'. `cd' to the directory where you want the object files and executables to go and run the `configure' script. `configure' automatically checks for the source code in the directory that `configure' is in and in `..'. With a non-GNU `make', it is safer to compile the package for one architecture at a time in the source code directory. After you have installed the package for one architecture, use `make distclean' before reconfiguring for another architecture. Installation Names ================== By default, `make install' installs the package's commands under `/usr/local/bin', include files under `/usr/local/include', etc. You can specify an installation prefix other than `/usr/local' by giving `configure' the option `--prefix=PREFIX'. You can specify separate installation prefixes for architecture-specific files and architecture-independent files. If you pass the option `--exec-prefix=PREFIX' to `configure', the package uses PREFIX as the prefix for installing programs and libraries. Documentation and other data files still use the regular prefix. In addition, if you use an unusual directory layout you can give options like `--bindir=DIR' to specify different values for particular kinds of files. Run `configure --help' for a list of the directories you can set and what kinds of files go in them. If the package supports it, you can cause programs to be installed with an extra prefix or suffix on their names by giving `configure' the option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. Optional Features ================= Some packages pay attention to `--enable-FEATURE' options to `configure', where FEATURE indicates an optional part of the package. They may also pay attention to `--with-PACKAGE' options, where PACKAGE is something like `gnu-as' or `x' (for the X Window System). The `README.md' should mention any `--enable-' and `--with-' options that the package recognizes. For packages that use the X Window System, `configure' can usually find the X include and library files automatically, but if it doesn't, you can use the `configure' options `--x-includes=DIR' and `--x-libraries=DIR' to specify their locations. Specifying the System Type ========================== There may be some features `configure' cannot figure out automatically, but needs to determine by the type of machine the package will run on. Usually, assuming the package is built to be run on the _same_ architectures, `configure' can figure that out, but if it prints a message saying it cannot guess the machine type, give it the `--build=TYPE' option. TYPE can either be a short name for the system type, such as `sun4', or a canonical name which has the form: CPU-COMPANY-SYSTEM where SYSTEM can have one of these forms: OS KERNEL-OS See the file `config.sub' for the possible values of each field. If `config.sub' isn't included in this package, then this package doesn't need to know the machine type. If you are _building_ compiler tools for cross-compiling, you should use the option `--target=TYPE' to select the type of system they will produce code for. If you want to _use_ a cross compiler, that generates code for a platform different from the build platform, you should specify the "host" platform (i.e., that on which the generated programs will eventually be run) with `--host=TYPE'. Sharing Defaults ================ If you want to set default values for `configure' scripts to share, you can create a site shell script called `config.site' that gives default values for variables like `CC', `cache_file', and `prefix'. `configure' looks for `PREFIX/share/config.site' if it exists, then `PREFIX/etc/config.site' if it exists. Or, you can set the `CONFIG_SITE' environment variable to the location of the site script. A warning: not all `configure' scripts look for a site script. Defining Variables ================== Variables not defined in a site shell script can be set in the environment passed to `configure'. However, some packages may run configure again during the build, and the customized values of these variables may be lost. In order to avoid this problem, you should set them in the `configure' command line, using `VAR=value'. For example: ./configure CC=/usr/local2/bin/gcc causes the specified `gcc' to be used as the C compiler (unless it is overridden in the site shell script). Unfortunately, this technique does not work for `CONFIG_SHELL' due to an Autoconf bug. Until the bug is fixed you can use this workaround: CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash `configure' Invocation ====================== `configure' recognizes the following options to control how it operates. `--help' `-h' Print a summary of the options to `configure', and exit. `--version' `-V' Print the version of Autoconf used to generate the `configure' script, and exit. `--cache-file=FILE' Enable the cache: use and save the results of the tests in FILE, traditionally `config.cache'. FILE defaults to `/dev/null' to disable caching. `--config-cache' `-C' Alias for `--cache-file=config.cache'. `--quiet' `--silent' `-q' Do not print messages saying which checks are being made. To suppress all normal output, redirect it to `/dev/null' (any error messages will still be shown). `--srcdir=DIR' Look for the package's source code in directory DIR. Usually `configure' can determine that directory automatically. `configure' also accepts some other, not widely useful, options. Run `configure --help' for more details.
New file @@ -0,0 +1,10 @@ [](https://travis-ci.org/google/glog/builds) [](https://ci.appveyor.com/project/google-admin/glog/history) This repository contains a C++ implementation of the Google logging module. Documentation for the implementation is in doc/. See INSTALL for (generic) installation instructions for C++: basically ```sh ./autogen.sh && ./configure && make && make install ``` aBuild/glog/share/doc/glog-0.3.5/README.windows
New file @@ -0,0 +1,17 @@ This project has been ported to Windows, including stack tracing, signal handling, and unit tests. A Visual Studio solution file is explicitly not provided because it is not maintainable. Instead, a CMake build system exists to generate the correct solution for your version of Visual Studio. In short, (1) Install CMake from: https://cmake.org/download/ (2) With CMake on your PATH, run `cmake .` to generate the build files (3) Either use `cmake --build`, or open the generated solution CMake provides different generators, and by default will pick the most relevant one to your environment. If you need a specific version of Visual Studio, use `cmake . -G <generator-name>`, and see `cmake --help` for the available generators. Also see `-T <toolset-name>`, which can used to request the native x64 toolchain with `-T host=x64`. aBuild/glog/share/doc/glog-0.3.5/designstyle.css
New file @@ -0,0 +1,115 @@ body { background-color: #ffffff; color: black; margin-right: 1in; margin-left: 1in; } h1, h2, h3, h4, h5, h6 { color: #3366ff; font-family: sans-serif; } @media print { /* Darker version for printing */ h1, h2, h3, h4, h5, h6 { color: #000080; font-family: helvetica, sans-serif; } } h1 { text-align: center; font-size: 18pt; } h2 { margin-left: -0.5in; } h3 { margin-left: -0.25in; } h4 { margin-left: -0.125in; } hr { margin-left: -1in; } /* Definition lists: definition term bold */ dt { font-weight: bold; } address { text-align: right; } /* Use the <code> tag for bits of code and <var> for variables and objects. */ code,pre,samp,var { color: #006000; } /* Use the <file> tag for file and directory paths and names. */ file { color: #905050; font-family: monospace; } /* Use the <kbd> tag for stuff the user should type. */ kbd { color: #600000; } div.note p { float: right; width: 3in; margin-right: 0%; padding: 1px; border: 2px solid #6060a0; background-color: #fffff0; } UL.nobullets { list-style-type: none; list-style-image: none; margin-left: -1em; } /* body:after { content: "Google Confidential"; } */ /* pretty printing styles. See prettify.js */ .str { color: #080; } .kwd { color: #008; } .com { color: #800; } .typ { color: #606; } .lit { color: #066; } .pun { color: #660; } .pln { color: #000; } .tag { color: #008; } .atn { color: #606; } .atv { color: #080; } pre.prettyprint { padding: 2px; border: 1px solid #888; } .embsrc { background: #eee; } @media print { .str { color: #060; } .kwd { color: #006; font-weight: bold; } .com { color: #600; font-style: italic; } .typ { color: #404; font-weight: bold; } .lit { color: #044; } .pun { color: #440; } .pln { color: #000; } .tag { color: #006; font-weight: bold; } .atn { color: #404; } .atv { color: #060; } } /* Table Column Headers */ .hdr { color: #006; font-weight: bold; background-color: #dddddd; } .hdr2 { color: #006; background-color: #eeeeee; } aBuild/glog/share/doc/glog-0.3.5/glog.html
New file @@ -0,0 +1,613 @@ <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <title>How To Use Google Logging Library (glog)</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link href="http://www.google.com/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="designstyle.css" type="text/css" rel="stylesheet"> <style type="text/css"> <!-- ol.bluelist li { color: #3366ff; font-family: sans-serif; } ol.bluelist li p { color: #000; font-family: "Times Roman", times, serif; } ul.blacklist li { color: #000; font-family: "Times Roman", times, serif; } //--> </style> </head> <body> <h1>How To Use Google Logging Library (glog)</h1> <small>(as of <script type=text/javascript> var lm = new Date(document.lastModified); document.write(lm.toDateString()); </script>) </small> <br> <h2> <A NAME=intro>Introduction</A> </h2> <p><b>Google glog</b> is a library that implements application-level logging. This library provides logging APIs based on C++-style streams and various helper macros. You can log a message by simply streaming things to LOG(<a particular <a href="#severity">severity level</a>>), e.g. <pre> #include <glog/logging.h> int main(int argc, char* argv[]) { // Initialize Google's logging library. google::InitGoogleLogging(argv[0]); // ... LOG(INFO) << "Found " << num_cookies << " cookies"; } </pre> <p>Google glog defines a series of macros that simplify many common logging tasks. You can log messages by severity level, control logging behavior from the command line, log based on conditionals, abort the program when expected conditions are not met, introduce your own verbose logging levels, and more. This document describes the functionality supported by glog. Please note that this document doesn't describe all features in this library, but the most useful ones. If you want to find less common features, please check header files under <code>src/glog</code> directory. <h2> <A NAME=severity>Severity Level</A> </h2> <p> You can specify one of the following severity levels (in increasing order of severity): <code>INFO</code>, <code>WARNING</code>, <code>ERROR</code>, and <code>FATAL</code>. Logging a <code>FATAL</code> message terminates the program (after the message is logged). Note that messages of a given severity are logged not only in the logfile for that severity, but also in all logfiles of lower severity. E.g., a message of severity <code>FATAL</code> will be logged to the logfiles of severity <code>FATAL</code>, <code>ERROR</code>, <code>WARNING</code>, and <code>INFO</code>. <p> The <code>DFATAL</code> severity logs a <code>FATAL</code> error in debug mode (i.e., there is no <code>NDEBUG</code> macro defined), but avoids halting the program in production by automatically reducing the severity to <code>ERROR</code>. <p>Unless otherwise specified, glog writes to the filename "/tmp/<program name>.<hostname>.<user name>.log.<severity level>.<date>.<time>.<pid>" (e.g., "/tmp/hello_world.example.com.hamaji.log.INFO.20080709-222411.10474"). By default, glog copies the log messages of severity level <code>ERROR</code> or <code>FATAL</code> to standard error (stderr) in addition to log files. <h2><A NAME=flags>Setting Flags</A></h2> <p>Several flags influence glog's output behavior. If the <a href="https://github.com/gflags/gflags">Google gflags library</a> is installed on your machine, the <code>configure</code> script (see the INSTALL file in the package for detail of this script) will automatically detect and use it, allowing you to pass flags on the command line. For example, if you want to turn the flag <code>--logtostderr</code> on, you can start your application with the following command line: <pre> ./your_application --logtostderr=1 </pre> If the Google gflags library isn't installed, you set flags via environment variables, prefixing the flag name with "GLOG_", e.g. <pre> GLOG_logtostderr=1 ./your_application </pre> <!-- TODO(hamaji): Fill the version number <p>By glog version 0.x.x, you can use GLOG_* environment variables even if you have gflags. If both an environment variable and a flag are specified, the value specified by a flag wins. E.g., if GLOG_v=0 and --v=1, the verbosity will be 1, not 0. --> <p>The following flags are most commonly used: <dl> <dt><code>logtostderr</code> (<code>bool</code>, default=<code>false</code>) <dd>Log messages to stderr instead of logfiles.<br> Note: you can set binary flags to <code>true</code> by specifying <code>1</code>, <code>true</code>, or <code>yes</code> (case insensitive). Also, you can set binary flags to <code>false</code> by specifying <code>0</code>, <code>false</code>, or <code>no</code> (again, case insensitive). <dt><code>stderrthreshold</code> (<code>int</code>, default=2, which is <code>ERROR</code>) <dd>Copy log messages at or above this level to stderr in addition to logfiles. The numbers of severity levels <code>INFO</code>, <code>WARNING</code>, <code>ERROR</code>, and <code>FATAL</code> are 0, 1, 2, and 3, respectively. <dt><code>minloglevel</code> (<code>int</code>, default=0, which is <code>INFO</code>) <dd>Log messages at or above this level. Again, the numbers of severity levels <code>INFO</code>, <code>WARNING</code>, <code>ERROR</code>, and <code>FATAL</code> are 0, 1, 2, and 3, respectively. <dt><code>log_dir</code> (<code>string</code>, default="") <dd>If specified, logfiles are written into this directory instead of the default logging directory. <dt><code>v</code> (<code>int</code>, default=0) <dd>Show all <code>VLOG(m)</code> messages for <code>m</code> less or equal the value of this flag. Overridable by --vmodule. See <a href="#verbose">the section about verbose logging</a> for more detail. <dt><code>vmodule</code> (<code>string</code>, default="") <dd>Per-module verbose level. The argument has to contain a comma-separated list of <module name>=<log level>. <module name> is a glob pattern (e.g., <code>gfs*</code> for all modules whose name starts with "gfs"), matched against the filename base (that is, name ignoring .cc/.h./-inl.h). <log level> overrides any value given by --v. See also <a href="#verbose">the section about verbose logging</a>. </dl> <p>There are some other flags defined in logging.cc. Please grep the source code for "DEFINE_" to see a complete list of all flags. <p>You can also modify flag values in your program by modifying global variables <code>FLAGS_*</code> . Most settings start working immediately after you update <code>FLAGS_*</code> . The exceptions are the flags related to destination files. For example, you might want to set <code>FLAGS_log_dir</code> before calling <code>google::InitGoogleLogging</code> . Here is an example: <pre> LOG(INFO) << "file"; // Most flags work immediately after updating values. FLAGS_logtostderr = 1; LOG(INFO) << "stderr"; FLAGS_logtostderr = 0; // This won't change the log destination. If you want to set this // value, you should do this before google::InitGoogleLogging . FLAGS_log_dir = "/some/log/directory"; LOG(INFO) << "the same file"; </pre> <h2><A NAME=conditional>Conditional / Occasional Logging</A></h2> <p>Sometimes, you may only want to log a message under certain conditions. You can use the following macros to perform conditional logging: <pre> LOG_IF(INFO, num_cookies > 10) << "Got lots of cookies"; </pre> The "Got lots of cookies" message is logged only when the variable <code>num_cookies</code> exceeds 10. If a line of code is executed many times, it may be useful to only log a message at certain intervals. This kind of logging is most useful for informational messages. <pre> LOG_EVERY_N(INFO, 10) << "Got the " << google::COUNTER << "th cookie"; </pre> <p>The above line outputs a log messages on the 1st, 11th, 21st, ... times it is executed. Note that the special <code>google::COUNTER</code> value is used to identify which repetition is happening. <p>You can combine conditional and occasional logging with the following macro. <pre> LOG_IF_EVERY_N(INFO, (size > 1024), 10) << "Got the " << google::COUNTER << "th big cookie"; </pre> <p>Instead of outputting a message every nth time, you can also limit the output to the first n occurrences: <pre> LOG_FIRST_N(INFO, 20) << "Got the " << google::COUNTER << "th cookie"; </pre> <p>Outputs log messages for the first 20 times it is executed. Again, the <code>google::COUNTER</code> identifier indicates which repetition is happening. <h2><A NAME=debug>Debug Mode Support</A></h2> <p>Special "debug mode" logging macros only have an effect in debug mode and are compiled away to nothing for non-debug mode compiles. Use these macros to avoid slowing down your production application due to excessive logging. <pre> DLOG(INFO) << "Found cookies"; DLOG_IF(INFO, num_cookies > 10) << "Got lots of cookies"; DLOG_EVERY_N(INFO, 10) << "Got the " << google::COUNTER << "th cookie"; </pre> <h2><A NAME=check>CHECK Macros</A></h2> <p>It is a good practice to check expected conditions in your program frequently to detect errors as early as possible. The <code>CHECK</code> macro provides the ability to abort the application when a condition is not met, similar to the <code>assert</code> macro defined in the standard C library. <p><code>CHECK</code> aborts the application if a condition is not true. Unlike <code>assert</code>, it is *not* controlled by <code>NDEBUG</code>, so the check will be executed regardless of compilation mode. Therefore, <code>fp->Write(x)</code> in the following example is always executed: <pre> CHECK(fp->Write(x) == 4) << "Write failed!"; </pre> <p>There are various helper macros for equality/inequality checks - <code>CHECK_EQ</code>, <code>CHECK_NE</code>, <code>CHECK_LE</code>, <code>CHECK_LT</code>, <code>CHECK_GE</code>, and <code>CHECK_GT</code>. They compare two values, and log a <code>FATAL</code> message including the two values when the result is not as expected. The values must have <code>operator<<(ostream, ...)</code> defined. <p>You may append to the error message like so: <pre> CHECK_NE(1, 2) << ": The world must be ending!"; </pre> <p>We are very careful to ensure that each argument is evaluated exactly once, and that anything which is legal to pass as a function argument is legal here. In particular, the arguments may be temporary expressions which will end up being destroyed at the end of the apparent statement, for example: <pre> CHECK_EQ(string("abc")[1], 'b'); </pre> <p>The compiler reports an error if one of the arguments is a pointer and the other is NULL. To work around this, simply static_cast NULL to the type of the desired pointer. <pre> CHECK_EQ(some_ptr, static_cast<SomeType*>(NULL)); </pre> <p>Better yet, use the CHECK_NOTNULL macro: <pre> CHECK_NOTNULL(some_ptr); some_ptr->DoSomething(); </pre> <p>Since this macro returns the given pointer, this is very useful in constructor initializer lists. <pre> struct S { S(Something* ptr) : ptr_(CHECK_NOTNULL(ptr)) {} Something* ptr_; }; </pre> <p>Note that you cannot use this macro as a C++ stream due to this feature. Please use <code>CHECK_EQ</code> described above to log a custom message before aborting the application. <p>If you are comparing C strings (char *), a handy set of macros performs case sensitive as well as case insensitive comparisons - <code>CHECK_STREQ</code>, <code>CHECK_STRNE</code>, <code>CHECK_STRCASEEQ</code>, and <code>CHECK_STRCASENE</code>. The CASE versions are case-insensitive. You can safely pass <code>NULL</code> pointers for this macro. They treat <code>NULL</code> and any non-<code>NULL</code> string as not equal. Two <code>NULL</code>s are equal. <p>Note that both arguments may be temporary strings which are destructed at the end of the current "full expression" (e.g., <code>CHECK_STREQ(Foo().c_str(), Bar().c_str())</code> where <code>Foo</code> and <code>Bar</code> return C++'s <code>std::string</code>). <p>The <code>CHECK_DOUBLE_EQ</code> macro checks the equality of two floating point values, accepting a small error margin. <code>CHECK_NEAR</code> accepts a third floating point argument, which specifies the acceptable error margin. <h2><A NAME=verbose>Verbose Logging</A></h2> <p>When you are chasing difficult bugs, thorough log messages are very useful. However, you may want to ignore too verbose messages in usual development. For such verbose logging, glog provides the <code>VLOG</code> macro, which allows you to define your own numeric logging levels. The <code>--v</code> command line option controls which verbose messages are logged: <pre> VLOG(1) << "I'm printed when you run the program with --v=1 or higher"; VLOG(2) << "I'm printed when you run the program with --v=2 or higher"; </pre> <p>With <code>VLOG</code>, the lower the verbose level, the more likely messages are to be logged. For example, if <code>--v==1</code>, <code>VLOG(1)</code> will log, but <code>VLOG(2)</code> will not log. This is opposite of the severity level, where <code>INFO</code> is 0, and <code>ERROR</code> is 2. <code>--minloglevel</code> of 1 will log <code>WARNING</code> and above. Though you can specify any integers for both <code>VLOG</code> macro and <code>--v</code> flag, the common values for them are small positive integers. For example, if you write <code>VLOG(0)</code>, you should specify <code>--v=-1</code> or lower to silence it. This is less useful since we may not want verbose logs by default in most cases. The <code>VLOG</code> macros always log at the <code>INFO</code> log level (when they log at all). <p>Verbose logging can be controlled from the command line on a per-module basis: <pre> --vmodule=mapreduce=2,file=1,gfs*=3 --v=0 </pre> <p>will: <ul> <li>a. Print VLOG(2) and lower messages from mapreduce.{h,cc} <li>b. Print VLOG(1) and lower messages from file.{h,cc} <li>c. Print VLOG(3) and lower messages from files prefixed with "gfs" <li>d. Print VLOG(0) and lower messages from elsewhere </ul> <p>The wildcarding functionality shown by (c) supports both '*' (matches 0 or more characters) and '?' (matches any single character) wildcards. Please also check the section about <a href="#flags">command line flags</a>. <p>There's also <code>VLOG_IS_ON(n)</code> "verbose level" condition macro. This macro returns true when the <code>--v</code> is equal or greater than <code>n</code>. To be used as <pre> if (VLOG_IS_ON(2)) { // do some logging preparation and logging // that can't be accomplished with just VLOG(2) << ...; } </pre> <p>Verbose level condition macros <code>VLOG_IF</code>, <code>VLOG_EVERY_N</code> and <code>VLOG_IF_EVERY_N</code> behave analogous to <code>LOG_IF</code>, <code>LOG_EVERY_N</code>, <code>LOF_IF_EVERY</code>, but accept a numeric verbosity level as opposed to a severity level. <pre> VLOG_IF(1, (size > 1024)) << "I'm printed when size is more than 1024 and when you run the " "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 " << 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 " << google::COUNTER; </pre> <h2> <A name="signal">Failure Signal Handler</A> </h2> <p> The library provides a convenient signal handler that will dump useful information when the program crashes on certain signals such as SIGSEGV. The signal handler can be installed by google::InstallFailureSignalHandler(). The following is an example of output from the signal handler. <pre> *** Aborted at 1225095260 (unix time) try "date -d @1225095260" if you are using GNU date *** *** SIGSEGV (@0x0) received by PID 17711 (TID 0x7f893090a6f0) from PID 0; stack trace: *** PC: @ 0x412eb1 TestWaitingLogSink::send() @ 0x7f892fb417d0 (unknown) @ 0x412eb1 TestWaitingLogSink::send() @ 0x7f89304f7f06 google::LogMessage::SendToLog() @ 0x7f89304f35af google::LogMessage::Flush() @ 0x7f89304f3739 google::LogMessage::~LogMessage() @ 0x408cf4 TestLogSinkWaitTillSent() @ 0x4115de main @ 0x7f892f7ef1c4 (unknown) @ 0x4046f9 (unknown) </pre> <p> By default, the signal handler writes the failure dump to the standard error. You can customize the destination by InstallFailureWriter(). <h2> <A name="misc">Miscellaneous Notes</A> </h2> <h3><A NAME=message>Performance of Messages</A></h3> <p>The conditional logging macros provided by glog (e.g., <code>CHECK</code>, <code>LOG_IF</code>, <code>VLOG</code>, ...) are carefully implemented and don't execute the right hand side expressions when the conditions are false. So, the following check may not sacrifice the performance of your application. <pre> CHECK(obj.ok) << obj.CreatePrettyFormattedStringButVerySlow(); </pre> <h3><A NAME=failure>User-defined Failure Function</A></h3> <p><code>FATAL</code> severity level messages or unsatisfied <code>CHECK</code> condition terminate your program. You can change the behavior of the termination by <code>InstallFailureFunction</code>. <pre> void YourFailureFunction() { // Reports something... exit(1); } int main(int argc, char* argv[]) { google::InstallFailureFunction(&YourFailureFunction); } </pre> <p>By default, glog tries to dump stacktrace and makes the program exit with status 1. The stacktrace is produced only when you run the program on an architecture for which glog supports stack tracing (as of September 2008, glog supports stack tracing for x86 and x86_64). <h3><A NAME=raw>Raw Logging</A></h3> <p>The header file <code><glog/raw_logging.h></code> can be used for thread-safe logging, which does not allocate any memory or acquire any locks. Therefore, the macros defined in this header file can be used by low-level memory allocation and synchronization code. Please check <code>src/glog/raw_logging.h.in</code> for detail. </p> <h3><A NAME=plog>Google Style perror()</A></h3> <p><code>PLOG()</code> and <code>PLOG_IF()</code> and <code>PCHECK()</code> behave exactly like their <code>LOG*</code> and <code>CHECK</code> equivalents with the addition that they append a description of the current state of errno to their output lines. E.g. <pre> PCHECK(write(1, NULL, 2) >= 0) << "Write NULL failed"; </pre> <p>This check fails with the following error message. <pre> F0825 185142 test.cc:22] Check failed: write(1, NULL, 2) >= 0 Write NULL failed: Bad address [14] </pre> <h3><A NAME=syslog>Syslog</A></h3> <p><code>SYSLOG</code>, <code>SYSLOG_IF</code>, and <code>SYSLOG_EVERY_N</code> macros are available. These log to syslog in addition to the normal logs. Be aware that logging to syslog can drastically impact performance, especially if syslog is configured for remote logging! Make sure you understand the implications of outputting to syslog before you use these macros. In general, it's wise to use these macros sparingly. <h3><A NAME=strip>Strip Logging Messages</A></h3> <p>Strings used in log messages can increase the size of your binary and present a privacy concern. You can therefore instruct glog to remove all strings which fall below a certain severity level by using the GOOGLE_STRIP_LOG macro: <p>If your application has code like this: <pre> #define GOOGLE_STRIP_LOG 1 // this must go before the #include! #include <glog/logging.h> </pre> <p>The compiler will remove the log messages whose severities are less than the specified integer value. Since <code>VLOG</code> logs at the severity level <code>INFO</code> (numeric value <code>0</code>), setting <code>GOOGLE_STRIP_LOG</code> to 1 or greater removes all log messages associated with <code>VLOG</code>s as well as <code>INFO</code> log statements. <h3><A NAME=windows>Notes for Windows users</A></h3> <p>Google glog defines a severity level <code>ERROR</code>, which is also defined in <code>windows.h</code> . You can make glog not define <code>INFO</code>, <code>WARNING</code>, <code>ERROR</code>, and <code>FATAL</code> by defining <code>GLOG_NO_ABBREVIATED_SEVERITIES</code> before including <code>glog/logging.h</code> . Even with this macro, you can still use the iostream like logging facilities: <pre> #define GLOG_NO_ABBREVIATED_SEVERITIES #include <windows.h> #include <glog/logging.h> // ... LOG(ERROR) << "This should work"; LOG_IF(ERROR, x > y) << "This should be also OK"; </pre> <p> However, you cannot use <code>INFO</code>, <code>WARNING</code>, <code>ERROR</code>, and <code>FATAL</code> anymore for functions defined in <code>glog/logging.h</code> . <pre> #define GLOG_NO_ABBREVIATED_SEVERITIES #include <windows.h> #include <glog/logging.h> // ... // This won't work. // google::FlushLogFiles(google::ERROR); // Use this instead. google::FlushLogFiles(google::GLOG_ERROR); </pre> <p> If you don't need <code>ERROR</code> defined by <code>windows.h</code>, there are a couple of more workarounds which sometimes don't work: <ul> <li>#define <code>WIN32_LEAN_AND_MEAN</code> or <code>NOGDI</code> <strong>before</strong> you #include <code>windows.h</code> . <li>#undef <code>ERROR</code> <strong>after</strong> you #include <code>windows.h</code> . </ul> <p>See <a href="http://code.google.com/p/google-glog/issues/detail?id=33"> this issue</a> for more detail. <hr> <address> Shinichiro Hamaji<br> Gregor Hohpe<br> <script type=text/javascript> var lm = new Date(document.lastModified); document.write(lm.toDateString()); </script> </address> </body> </html> buildGLOG.sh
New file @@ -0,0 +1,2 @@ #!/usr/bin/env bash ./autogen.sh && ./configure --prefix=`pwd`/../aBuild/glog && make && make install buildNNG.sh
New file @@ -0,0 +1,7 @@ #!/usr/bin/env bash cd nng mkdir build cd build cmake ../ -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=`pwd`/../../aBuild/nng make -j && make install
New file @@ -1 +1 @@ Subproject commit 0000000000000000000000000000000000000000 Subproject commit 7ffca211fe8bf30453da9e27b66000d3735f96b9
