diff --git a/README.md b/README.md index f94bb163..be769ecf 100644 --- a/README.md +++ b/README.md @@ -67,15 +67,13 @@ int main(int, char* []) namespace spd = spdlog; try { - // Set log level to all loggers to debug and above - spd::set_level(spd::level::debug); - //Create console, multithreaded logger auto console = spd::stdout_logger_mt("console"); 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); console->info("Support for floats {:03.2f}", 1.23456); @@ -84,30 +82,49 @@ int main(int, char* []) console->info("{:<30}", "left aligned"); console->info("{:>30}", "right aligned"); console->info("{:^30}", "centered"); - + + // + // 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::info); // Set specific logger's log level + console->info("Now it should.."); + + // // Create a file rotating logger with 5mb size max and 3 rotated files + // auto file_logger = spd::rotating_logger_mt("file_logger", "logs/mylogfile", 1048576 * 5, 3); - file_logger->set_level(spd::level::info); for(int i = 0; i < 10; ++i) file_logger->info("{} * {} equals {:>10}", i, i, i*i); + // // Customize msg format for all messages + // spd::set_pattern("*** [%H:%M:%S %z] [thread %t] %v ***"); file_logger->info("This is another message with custom format"); spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function"); + // + // 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.. + // size_t q_size = 1048576; //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"); 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);