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2015-05-11 10:44:26 +02:00
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README.md
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# spdlog
Very fast, header only, C++ logging library.
Very fast, header only, C++ logging library. [![Build Status](https://travis-ci.org/gabime/spdlog.svg?branch=master)](https://travis-ci.org/gabime/spdlog)
## Install
Just copy the files to your build tree and use a C++11 compiler
@@ -9,7 +9,7 @@ Just copy the files to your build tree and use a C++11 compiler
* Linux (gcc 4.8.1+, clang 3.5+)
* Windows (visual studio 2013+, mingw with g++ 4.9.1+)
* Mac OSX (clang 3.5+)
##Features
* Very fast - performance is the primary goal (see [benchmarks](#benchmarks) below).
* Headers only.
@@ -31,7 +31,7 @@ Just copy the files to your build tree and use a C++11 compiler
## Benchmarks
Below are some [benchmarks](bench) comparing popular log libraries under Ubuntu 64 bit, Intel i7-4770 CPU @ 3.40GHz
Below are some [benchmarks](bench) comparing popular log libraries under Ubuntu 64 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):
@@ -43,7 +43,7 @@ Time needed to log 1,000,000 lines in synchronous mode (in seconds, the best of
|100| 15.008 |1.139s |4.512s |0.497s|
#### Asynchronous mode
#### 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 <sup>async logger</sup> |spdlog <sup>async mode</sup>|
@@ -70,7 +70,7 @@ int main(int, char* [])
console->info("Welcome to spdlog!") ;
console->info("An info message example {}..", 1);
console->info() << "Streams are supported too " << 1;
//Formatting examples
console->info("Easy padding in numbers like {:08d}", 12);
console->info("Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42);
@@ -80,7 +80,7 @@ int main(int, char* [])
console->info("{:<30}", "left aligned");
console->info("{:>30}", "right aligned");
console->info("{:^30}", "centered");
//
// Runtime log levels
//
@@ -88,7 +88,7 @@ int main(int, char* [])
console->debug("This message shold not be displayed!");
console->set_level(spd::level::debug); // Set specific logger's log level
console->debug("Now it should..");
//
// Create a file rotating logger with 5mb size max and 3 rotated files
//
@@ -100,8 +100,8 @@ int main(int, char* [])
// 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);
//
//
// Customize msg format for all messages
//
spd::set_pattern("*** [%H:%M:%S %z] [thread %t] %v ***");
@@ -115,7 +115,7 @@ int main(int, char* [])
//
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..
@@ -124,14 +124,14 @@ int main(int, char* [])
spdlog::set_async_mode(q_size);
auto async_file= spd::daily_logger_st("async_file_logger", "logs/async_log.txt");
async_file->info() << "This is async log.." << "Should be very fast!";
//
//
// syslog example. linux only..
//
#ifdef __linux__
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. This is Linux only!");
syslog_logger->warn("This is warning that will end up in syslog. This is Linux only!");
#endif
}
catch (const spd::spdlog_ex& ex)
@@ -155,4 +155,3 @@ void custom_class_example()
## Documentation
Documentation can be found in the [wiki](https://github.com/gabime/spdlog/wiki/1.-QuickStart) pages.