spdlog/bench-comparison/spdlog-bench-mt.cpp

#include <thread>
#include <vector>
#include <atomic>

#include "spdlog/spdlog.h"

#include <iostream>
using namespace std;
	
int main(int argc, char* argv[])
{

	int thread_count = 10;
	if(argc > 1)
		thread_count = atoi(argv[1]);
		
	int howmany = 1000000;

	namespace spd = spdlog;
	///Create a file rotating logger with 5mb size max and 3 rotated files
    auto logger = spd::rotating_logger_mt("file_logger", "logs/spd-sample", 10 *1024 * 1024 , 5);

	logger->set_pattern("[%Y-%b-%d %T.%e]: %v");
		
	std::atomic<int > msg_counter {0};
    vector<thread> threads;
    	
	for (int t = 0; t < thread_count; ++t)
    {
        threads.push_back(std::thread([&]()
        {
            while (true)
            {
                int counter = ++msg_counter;
                if (counter > howmany) break;
              logger->info() << "spdlog logger message #" << counter;
            }
        }));
    }


    for(auto &t:threads)
    {
        t.join();
    };
    
    

    return 0;
}