1 #include 
     
       2 void current_time() 3 { 4     // 当前时间点 5     std::chrono::system_clock::time_point t_now = 6         std::chrono::high_resolution_clock::now(); 7     // 转换精度到微秒级别 8     std::chrono::time_point
      
        t_n =  9         std::chrono::time_point_cast
       
        (t_now);10 11     time_t nt = std::chrono::system_clock::to_time_t(t_now);12     struct tm btm;13 #ifdef _WIN3214     localtime_s(&btm, &nt);15 #else16     localtime_r(&nt, &btm);17 #endif18 19     char mbstr[256] = { 0 };20     strftime(mbstr, sizeof(mbstr), "%Y-%m-%d %H:%M:%S", &btm);21     printf("%s.%06" PRIu64 "\n", mbstr, t_n.time_since_epoch() % 1000000);22 }