tmclear.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 76 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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@pre-3e code
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@/* tmclear.c - tmclear */

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

/*------------------------------------------------------------------------
 *  tmclear -  clear the indicated timer
 *------------------------------------------------------------------------
 */
int tmclear(port, msg)
int	port, msg;
{
	struct	tqent	*prev, *ptq;
	int		timespent;

	wait(tqmutex);
	prev = 0;
	for (ptq = tqhead; ptq != NULL; ptq = ptq->tq_next) {
		if (ptq->tq_port == port && ptq->tq_msg == msg) {
			timespent = ctr100 - ptq->tq_time;
			if (prev)
				prev->tq_next = ptq->tq_next;
			else
				tqhead = ptq->tq_next;
			if (ptq->tq_next)
				ptq->tq_next->tq_timeleft +=
						ptq->tq_timeleft;
			signal(tqmutex);
			freemem(ptq, sizeof(struct tqent));
			return timespent;
		}
		prev = ptq;
	}
	signal(tqmutex);
	return SYSERR;
}
@


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@Initial revision
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