Linux_信号实现微秒级定时

int setTicker(int ms)
{
    struct itimerval timeset;    
    long s, us;
    s = ms / 1000;    
    us = (ms % 1000) * 1000L;
    timeset.it_interval.tv_sec = s;
    timeset.it_interval.tv_usec = us;    
    timeset.it_value.tv_sec = s;    
    timeset.it_value.tv_usec = us;
    return setitimer(ITIMER_REAL, &timeset, NULL);
  
}

参数详解
信号介绍