Repository: gabime/spdlog
File: example/example.cpp (C++)

Code before:
{
    // Create color multi threaded logger.
    auto console = spdlog::stdout_color_mt("console");
    // or for stderr:
    // auto console = spdlog::stderr_color_mt("error-logger");
}

#include "spdlog/sinks/basic_file_sink.h"
void basic_example()
{
    // Create basic file logger (not rotated).
    auto my_logger = spdlog::basic_logger_mt("file_logger", SPDLOG_FILENAME_T("logs/basic-log.txt"));
}

#include "spdlog/sinks/rotating_file_sink.h"
void rotating_example()
{
    // Create a file rotating logger with 5mb size max and 3 rotated files.
    auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", SPDLOG_FILENAME_T("logs/rotating.txt"), 1048576 * 5, 3);
}

#include "spdlog/sinks/daily_file_sink.h"
void daily_example()
{
    // Create a daily logger - a new file is created every day on 2:30am.
    auto daily_logger = spdlog::daily_logger_mt("daily_logger", SPDLOG_FILENAME_T("logs/daily.txt"), 2, 30);
}

#include "spdlog/cfg/env.h"
void load_levels_example()
{
    // Set the log level to "info" and mylogger to to "trace":
    // SPDLOG_LEVEL=info,mylogger=trace && ./example
    spdlog::cfg::load_env_levels();
    // or from command line:
    // ./example SPDLOG_LEVEL=info,mylogger=trace
    // #include "spdlog/cfg/argv.h" // for loading levels from argv
    // spdlog::cfg::load_argv_levels(args, argv);
}

#include "spdlog/async.h"
void async_example()
{
    // Default thread pool settings can be modified *before* creating the async logger:
    // spdlog::init_thread_pool(32768, 1); // queue with max 32k items 1 backing thread.
    auto async_file = spdlog::basic_logger_mt<spdlog::async_factory>("async_file_logger", SPDLOG_FILENAME_T("logs/async_log.txt"));
    // alternatively:
    // auto async_file = spdlog::create_async<spdlog::sinks::basic_file_sink_mt>("async_file_logger", "logs/async_log.txt");

    for (int i = 1; i < 101; ++i)
    {

Review comment (suggestion):
While correct, I think the example should be without this SPDLOG_FILENAME_T macro. It is only needed in very special cases (windows + wchar support).

Code after:
{
    // Create color multi threaded logger.
    auto console = spdlog::stdout_color_mt("console");
    // or for stderr:
    // auto console = spdlog::stderr_color_mt("error-logger");
}

#include "spdlog/sinks/basic_file_sink.h"
void basic_example()
{
    // Create basic file logger (not rotated).
    auto my_logger = spdlog::basic_logger_mt("file_logger", "logs/basic-log.txt");
}

#include "spdlog/sinks/rotating_file_sink.h"
void rotating_example()
{
    // Create a file rotating logger with 5mb size max and 3 rotated files.
    auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
}

#include "spdlog/sinks/daily_file_sink.h"
void daily_example()
{
    // Create a daily logger - a new file is created every day on 2:30am.
    auto daily_logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
}

#include "spdlog/cfg/env.h"
void load_levels_example()
{
    // Set the log level to "info" and mylogger to to "trace":
    // SPDLOG_LEVEL=info,mylogger=trace && ./example
    spdlog::cfg::load_env_levels();
    // or from command line:
    // ./example SPDLOG_LEVEL=info,mylogger=trace
    // #include "spdlog/cfg/argv.h" // for loading levels from argv
    // spdlog::cfg::load_argv_levels(args, argv);
}

#include "spdlog/async.h"
void async_example()
{
    // Default thread pool settings can be modified *before* creating the async logger:
    // spdlog::init_thread_pool(32768, 1); // queue with max 32k items 1 backing thread.
    auto async_file = spdlog::basic_logger_mt<spdlog::async_factory>("async_file_logger", "logs/async_log.txt");
    // alternatively:
    // auto async_file = spdlog::create_async<spdlog::sinks::basic_file_sink_mt>("async_file_logger", "logs/async_log.txt");

    for (int i = 1; i < 101; ++i)
    {