tmleft.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 68 行

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date	97.09.21.19.29.52;	author dls;	state Dist;
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date	94.01.14.03.51.20;	author dls;	state v2e1;
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@/* tmleft.c - tmleft */

#include <conf.h>
#include <kernel.h>
#include <network.h>
#include <tcptimer.h>

/*------------------------------------------------------------------------
 *  tmleft -  how much time left for this timer?
 *------------------------------------------------------------------------
 */
int tmleft(port, msg)
int	port, msg;
{
	struct	tqent	*tq;
	int		timeleft = 0;

	if (tqhead == NULL)
		return 0;
	wait(tqmutex);
	for (tq = tqhead; tq != NULL; tq = tq->tq_next) {
		timeleft += tq->tq_timeleft;
		if (tq->tq_port == port && tq->tq_msg == msg) {
			signal(tqmutex);
			return timeleft;
		}
	}
	signal(tqmutex);
	return 0;
}
@


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