1/*	$KAME: timer.h,v 1.5 2002/05/31 13:30:38 jinmei Exp $	*/
2
3/*
4 * Copyright (C) 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32/* a < b */
33#define TIMEVAL_LT(a, b) (((a).tv_sec < (b).tv_sec) ||\
34			  (((a).tv_sec == (b).tv_sec) && \
35			    ((a).tv_usec < (b).tv_usec)))
36
37/* a <= b */
38#define TIMEVAL_LEQ(a, b) (((a).tv_sec < (b).tv_sec) ||\
39			   (((a).tv_sec == (b).tv_sec) &&\
40 			    ((a).tv_usec <= (b).tv_usec)))
41
42struct rtadvd_timer {
43	struct rtadvd_timer *next;
44	struct rtadvd_timer *prev;
45	struct rainfo *rai;
46	struct timeval tm;
47
48	struct rtadvd_timer *(*expire)(void *);	/* expiration function */
49	void *expire_data;
50	void (*update)(void *, struct timeval *);	/* update function */
51	void *update_data;
52};
53
54void rtadvd_timer_init(void);
55struct rtadvd_timer *rtadvd_add_timer(struct rtadvd_timer *(*)(void *),
56		void (*)(void *, struct timeval *), void *, void *);
57void rtadvd_set_timer(struct timeval *, struct rtadvd_timer *);
58void rtadvd_remove_timer(struct rtadvd_timer **);
59struct timeval * rtadvd_check_timer(void);
60struct timeval * rtadvd_timer_rest(struct rtadvd_timer *);
61void TIMEVAL_ADD(struct timeval *, struct timeval *,
62		      struct timeval *);
63void TIMEVAL_SUB(struct timeval *, struct timeval *,
64		      struct timeval *);
65