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/* $OpenBSD: timer.c,v 1.7 2008/05/08 07:43:03 henning Exp $ */
/*
* Copyright (c) 2003-2007 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <stdlib.h>
#include "bgpd.h"
#include "session.h"
struct peer_timer *
timer_get(struct peer *p, enum Timer timer)
{
struct peer_timer *pt;
TAILQ_FOREACH(pt, &p->timers, entry)
if (pt->type == timer)
break;
return (pt);
}
int
timer_due(struct peer *p, enum Timer timer)
{
struct peer_timer *pt = timer_get(p, timer);
if (pt != NULL && pt->val > 0 && pt->val <= time(NULL))
return (1);
return (0);
}
struct peer_timer *
timer_nextisdue(struct peer *p)
{
struct peer_timer *pt;
pt = TAILQ_FIRST(&p->timers);
if (pt != NULL && pt->val > 0 && pt->val <= time(NULL))
return (pt);
return (NULL);
}
time_t
timer_nextduein(struct peer *p)
{
u_int i;
time_t d, r = -1;
for (i = 1; i < Timer_Max; i++)
if (timer_running(p, i, &d))
if (r == -1 || d < r)
r = d;
return (r);
}
int
timer_running(struct peer *p, enum Timer timer, time_t *left)
{
struct peer_timer *pt = timer_get(p, timer);
if (pt != NULL && pt->val > 0) {
if (left != NULL)
*left = pt->val - time(NULL);
return (1);
}
return (0);
}
void
timer_set(struct peer *p, enum Timer timer, u_int offset)
{
struct peer_timer *t, *pt = timer_get(p, timer);
if (pt == NULL) { /* have to create */
if ((pt = malloc(sizeof(*pt))) == NULL)
fatal("timer_set");
pt->type = timer;
} else {
TAILQ_REMOVE(&p->timers, pt, entry);
}
pt->val = time(NULL) + offset;
TAILQ_FOREACH(t, &p->timers, entry)
if (t->val == 0 || t->val > pt->val)
break;
if (t != NULL)
TAILQ_INSERT_BEFORE(t, pt, entry);
else
TAILQ_INSERT_TAIL(&p->timers, pt, entry);
}
void
timer_stop(struct peer *p, enum Timer timer)
{
struct peer_timer *pt = timer_get(p, timer);
if (pt != NULL) {
pt->val = 0;
TAILQ_REMOVE(&p->timers, pt, entry);
TAILQ_INSERT_TAIL(&p->timers, pt, entry);
}
}
void
timer_remove(struct peer *p, enum Timer timer)
{
struct peer_timer *pt = timer_get(p, timer);
if (pt != NULL) {
TAILQ_REMOVE(&p->timers, pt, entry);
free (pt);
}
}
void
timer_remove_all(struct peer *p)
{
struct peer_timer *pt;
while ((pt = TAILQ_FIRST(&p->timers)) != NULL) {
TAILQ_REMOVE(&p->timers, pt, entry);
free(pt);
}
}
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