timer.c
上传用户:tany51
上传日期:2013-06-12
资源大小:1397k
文件大小:4k
- /*
- * Copyright (C) 1999,2000 Ross Combs (rocombs@cs.nmsu.edu)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- #define TIMER_INTERNAL_ACCESS
- #include "common/setup_before.h"
- #ifdef STDC_HEADERS
- # include <stdlib.h>
- #else
- # ifdef HAVE_MALLOC_H
- # include <malloc.h>
- # endif
- #endif
- #include "common/list.h"
- #include "connection.h"
- #include "common/eventlog.h"
- #include "timer.h"
- #include "common/setup_after.h"
- static t_list * timerlist_head=NULL;
- extern int timerlist_add_timer(t_connection * owner, time_t when, t_timer_cb cb, t_timer_data data)
- {
- t_timer * timer;
-
- if (!owner)
- {
- eventlog(eventlog_level_error,"timerlist_add_timer","got NULL owner");
- return -1;
- }
-
- if (!(timer = malloc(sizeof(t_timer))))
- {
- eventlog(eventlog_level_error,"timerlist_add_timer","could not allocate memory for timer");
- return -1;
- }
- timer->owner = owner;
- timer->when = when;
- timer->cb = cb;
- timer->data = data;
-
- if (list_prepend_data(timerlist_head,timer)<0)
- {
- free(timer);
- eventlog(eventlog_level_error,"timerlist_add_timer","could not prepend temp");
- return -1;
- }
-
- return 0;
- }
- extern int timerlist_del_all_timers(t_connection * owner)
- {
- t_elem * curr;
- t_timer * timer;
-
- if (!owner)
- {
- eventlog(eventlog_level_error,"timerlist_del_all_timers","got NULL owner");
- return -1;
- }
-
- LIST_TRAVERSE(timerlist_head,curr)
- {
- timer = elem_get_data(curr);
- if (!timer) /* should not happen */
- {
- eventlog(eventlog_level_error,"timerlist_del_all_timers","timerlist contains NULL item");
- return -1;
- }
- if (timer->owner==owner)
- {
- if (timer->cb)
- timer->cb(timer->owner,(time_t)0,timer->data);
- timer->cb = NULL;
- timer->owner = NULL;
- if (list_remove_elem(timerlist_head,curr)<0)
- {
- eventlog(eventlog_level_error,"timerlist_del_all_timers","could not remove timer");
- continue;
- }
- free(timer);
- }
- }
-
- return 0;
- }
- extern int timerlist_check_timers(time_t when)
- {
- t_elem * curr;
- t_timer * timer;
-
- LIST_TRAVERSE(timerlist_head,curr)
- {
- timer = elem_get_data(curr);
- if (!timer) /* should not happen */
- {
- eventlog(eventlog_level_error,"timerlist_check_timers","timerlist contains NULL item");
- return -1;
- }
- if (timer->owner && timer->when<when)
- {
- if (timer->cb)
- timer->cb(timer->owner,timer->when,timer->data);
- if (list_remove_elem(timerlist_head,curr)<0)
- {
- eventlog(eventlog_level_error,"timerlist_check_timers","could not remove timer");
- continue;
- }
- free(timer);
- }
- }
-
- list_purge(timerlist_head);
-
- return 0;
- }
- extern int timerlist_create(void)
- {
- if (!(timerlist_head = list_create()))
- return -1;
- return 0;
- }
- extern int timerlist_destroy(void)
- {
- t_elem * curr;
- t_timer * timer;
-
- if (timerlist_head)
- {
- LIST_TRAVERSE(timerlist_head,curr)
- {
- timer = elem_get_data(curr);
- if (!timer) /* should not happen */
- {
- eventlog(eventlog_level_error,"timerlist_destroy","timerlist contains NULL item");
- continue;
- }
-
- if (list_remove_elem(timerlist_head,curr)<0)
- {
- eventlog(eventlog_level_error,"timerlist_destroy","could not remove item from list");
- continue;
- }
- free(timer);
- }
-
- if (list_destroy(timerlist_head)<0)
- return -1;
- timerlist_head = NULL;
- }
-
- return 0;
- }