Windows 和 Linux时间函数

来源：互联网发布：长海医院人工智能编辑：程序博客网时间：2024/06/02 07:02

做个小记号，前天昨天都在尝试编译MPlayer，很遗憾还没成功，我想让我小板子跑起视频的愿望还没实现，今天用到的时间函数先做个记录吧

Windows版本，获取当前毫秒数，以及如何得到当前年月日时间等，主要用到_ftime, localtime函数，还有一个time()函数则只能得到秒数，没有毫秒

time_t now;
    struct tm mylocaltime;
    struct _timeb timebuffer;
    struct tm * newtime;
    unsigned short millitm1;

    _ftime( &timebuffer);
    now = timebuffer.time;
    millitm1 = timebuffer.millitm;
    newtime = localtime(&now);
    mylocaltime = *newtime;
    fprintf(log_file(), "[%d-%d-%d %02d:%02d:%02d:%ld",
        mylocaltime.tm_year + 1900, mylocaltime.tm_mon + 1, mylocaltime.tm_mday,
        mylocaltime.tm_hour, mylocaltime.tm_min, mylocaltime.tm_sec, millitm1);

linux则用下面这两个函数

   gettimeofday(&now, NULL);
    localtime_r(&now.tv_sec, &mylocaltime);

    fprintf( "[%d-%d-%d %02d:%02d:%02d:%ld",
           mylocaltime.tm_year + 1900, mylocaltime.tm_mon + 1, mylocaltime.tm_mday,
        mylocaltime.tm_hour, mylocaltime.tm_min, mylocaltime.tm_sec, now.tv_usec / 1000);