Linux sleep的三种实现_linux select实现sleep

1、采用select

timeval timeOut;
timeOut.tv_sec = useconds/1000000;
timeOut.tv_usec = useconds%1000000;
TLOG_INFO("tv_sec=%lld, tv_usec=%lld.", timeOut.tv_sec, timeOut.tv_usec);
if (0 != select(0, NULL, NULL, NULL, &timeOut)){
	TLOG_INFO("select error");
	return false;
}

2、nanosleep

struct timespec req;
req.tv_sec = useconds/1000000;
req.tv_nsec = (useconds%1000000) * 1000;
int ret = nanosleep(&req, NULL);
if (-1 == ret){
    TLOG_ERROR ("nanousleep   %8u   not support.", useconds);
}

3、usleep

usleep(useconds)