sleepus.c

来自「unix环境高级编程的源代码」· C语言 代码 · 共 16 行

#include    <sys/types.h>
#include    <poll.h>
#include    <stropts.h>
#include    "ourhdr.h"

void
sleep_us(unsigned int nusecs)
{
    struct pollfd    dummy;
    int                timeout;

    if ( (timeout = nusecs / 1000) <= 0)
        timeout = 1;
    poll(&dummy, 0, timeout);
}