摘要：
linux的man页中对gettimeofday函数的说明中，有这样一个说明：$ man gettimeofdayDESCRIPTION The functions gettimeofday and settimeofday can get and set the time as well as a timezone. The tv argument is a timeval struct, as specified in : struct timeval { time_t tv_sec; /* seconds */ suseconds_t tv_usec;... 阅读全文
