sleepus.c

apue第二版每一章节的c语言源码

#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);
}