sleepus.c

来自「unix环境高级编程一书源代码 本书全面介绍了UNIX系统的程序设计界面—系统」· 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);
}