文件列表:

.travis.yml (3518, 2016-09-25)
CMakeLists.txt (2114, 2016-09-25)
INSTALL (323, 2016-09-25)
LICENSE (1142, 2016-09-25)
astyle.sh (129, 2016-09-25)
bench (0, 2016-09-25)
bench\Makefile (2164, 2016-09-25)
bench\Makefile.mingw (2106, 2016-09-25)
bench\boost-bench-mt.cpp (1880, 2016-09-25)
bench\boost-bench.cpp (1342, 2016-09-25)
bench\easyl.conf (389, 2016-09-25)
bench\easylogging-bench-mt.cpp (1065, 2016-09-25)
bench\easylogging-bench.cpp (503, 2016-09-25)
bench\g2log-async.cpp (1488, 2016-09-25)
bench\glog-bench-mt.cpp (972, 2016-09-25)
bench\glog-bench.cpp (441, 2016-09-25)
bench\logs (0, 2016-09-25)
bench\spdlog-async.cpp (1583, 2016-09-25)
bench\spdlog-bench-mt.cpp (1099, 2016-09-25)
bench\spdlog-bench.cpp (604, 2016-09-25)
bench\spdlog-null-async.cpp (2866, 2016-09-25)
bench\utils.h (607, 2016-09-25)
cmake (0, 2016-09-25)
cmake\Config.cmake.in (1784, 2016-09-25)
cmake\spdlog.pc.in (160, 2016-09-25)
example (0, 2016-09-25)
example\CMakeLists.txt (2491, 2016-09-25)
example\Makefile (760, 2016-09-25)
example\Makefile.clang (760, 2016-09-25)
example\Makefile.mingw (752, 2016-09-25)
example\bench.cpp (4390, 2016-09-25)
example\example.cpp (5355, 2016-09-25)
example\example.sln (1167, 2016-09-25)
example\example.vcxproj (6619, 2016-09-25)
example\jni (0, 2016-09-25)
example\jni\Android.mk (410, 2016-09-25)
... ...

# spdlog Very fast, header only, C++ logging library. [](https://travis-ci.org/gabime/spdlog)  [](https://ci.appveyor.com/project/gabime/spdlog) ## Install Just copy the source [folder](https://github.com/gabime/spdlog/tree/master/include/spdlog) to your build tree and use a C++11 compiler ## Platforms * Linux (gcc 4.8.1+, clang 3.5+) * Windows (visual studio 2013+, cygwin/mingw with g++ 4.9.1+) * Mac OSX (clang 3.5+) * Solaris (gcc 5.2.0+) * Android ##Features * Very fast - performance is the primary goal (see [benchmarks](#benchmarks) below). * Headers only, just copy and use. * Feature rich [call style](#usage-example) using the excellent [fmt](https://github.com/fmtlib/fmt) library. * Extremely fast asynchronous mode (optional) - using lockfree queues and other tricks to reach millions of calls/sec. * [Custom](https://github.com/gabime/spdlog/wiki/3.-Custom-formatting) formatting. * Multi/Single threaded loggers. * Various log targets: * Rotating log files. * Daily log files. * Console logging (colors supported). * syslog. * Easily extendable with custom log targets (just implement a single function in the [sink](include/spdlog/sinks/sink.h) interface). * Severity based filtering - threshold levels can be modified in runtime as well as in compile time. ## Benchmarks Below are some [benchmarks](bench) comparing popular log libraries under Ubuntu *** bit, Intel i7-4770 CPU @ 3.40GHz #### Synchronous mode Time needed to log 1,000,000 lines in synchronous mode (in seconds, the best of 3 runs): |threads|boost log 1.54|glog |easylogging |spdlog| |-------|:-------:|:-----:|----------:|------:| |1| 4.169s |1.066s |0.975s |0.302s| |10| 6.180s |3.032s |2.857s |0.968s| |100| 5.***1s |1.139s |4.512s |0.497s| #### Asynchronous mode Time needed to log 1,000,000 lines in asynchronous mode, i.e. the time it takes to put them in the async queue (in seconds, the best of 3 runs): |threads|g2log ^{async logger} |spdlog ^{async mode}| |:-------|:-----:|-------------------------:| |1| 1.850s |0.216s | |10| 0.943s |0.173s| |100| 0.959s |0.202s| ## Usage Example ```c++ #include "spdlog/spdlog.h" #include #include void async_example(); void syslog_example(); void user_defined_example(); void err_handler_example(); namespace spd = spdlog; int main(int, char*[]) { try { // Multithreaded color console auto console = spd::stdout_logger_mt("console", true); console->info("Welcome to spdlog!"); console->info("An info message example {}..", 1); // Formatting examples console->warn("Easy padding in numbers like {:08d}", 12); console->critical("Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42); console->info("Support for floats {:03.2f}", 1.23456); console->info("Positional args are {1} {0}..", "too", "supported"); console->info("{:<30}", "left aligned"); console->info("{:>30}", "right aligned"); console->info("{:^30}", "centered"); spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function"); // Runtime log levels spd::set_level(spd::level::info); //Set global log level to info console->debug("This message shold not be displayed!"); console->set_level(spd::level::debug); // Set specific logger's log level console->debug("This message shold be displayed.."); // Create basic file logger (not rotated) auto my_logger = spd::basic_logger_mt("basic_logger", "logs/basic.txt"); my_logger->info("Some log message"); // Create a file rotating logger with 5mb size max and 3 rotated files auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/mylogfile", 1048576 * 5, 3); for (int i = 0; i < 10; ++i) rotating_logger->info("{} * {} equals {:>10}", i, i, i*i); // Create a daily logger - a new file is created every day on 2:30am auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily", 2, 30); daily_logger->info(123.44); // Customize msg format for all messages spd::set_pattern("*** [%H:%M:%S %z] [thread %t] %v ***"); rotating_logger->info("This is another message with custom format"); // Compile time debug or trace macros. // Enabled #ifdef SPDLOG_DEBUG_ON or #ifdef SPDLOG_TRACE_ON SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23); SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23); // Asynchronous logging is very fast.. // Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous.. async_example(); // syslog example. linux/osx only.. syslog_example(); // Log user-defined types example.. user_defined_example(); // Change default log error handler err_handler_example(); // Apply a function on all registered loggers spd::apply_all([&](std::shared_ptr l) {l->info("End of example."); }); // Release and close all loggers spdlog::drop_all(); } // Exceptions will only be thrown upon failed logger or sink construction (not during logging) catch (const spd::spdlog_ex& ex) { std::cout << "Log init failed: " << ex.what() << std::endl; return 1; } } void async_example() { size_t q_size = 4096; //queue size must be power of 2 spdlog::set_async_mode(q_size); auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log.txt"); for (int i = 0; i < 100; ++i) async_file->info("Async message #{}", i); } //syslog example void syslog_example() { #ifdef SPDLOG_ENABLE_SYSLOG std::string ident = "spdlog-example"; auto syslog_logger = spd::syslog_logger("syslog", ident, LOG_PID); syslog_logger->warn("This is warning that will end up in syslog.."); #endif } // user defined types logging by implementing operator<< struct my_type { int i; template friend OStream& operator<<(OStream& os, const my_type &c) { return os << "[my_type i="< // must be included void user_defined_example() { spd::get("console")->info("user defined type: {}", my_type { 14 }); } // //custom error handler // void err_handler_example() { spdlog::set_error_handler([](const std::string& msg) { std::cerr << "my err handler: " << msg << std::endl; }); // (or logger->set_error_handler(..) to set for specific logger) } ``` ## Documentation Documentation can be found in the [wiki](https://github.com/gabime/spdlog/wiki/1.-QuickStart) pages.

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