usr.sbin/rtadvd/timer.h

   1 /*      $KAME: timer.h,v 1.3 2000/05/27 11:30:43 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  * $FreeBSD: src/usr.sbin/rtadvd/timer.h,v 1.1.2.3 2002/06/29 18:59:53 ume Exp $
  32  * $DragonFly: src/usr.sbin/rtadvd/timer.h,v 1.3 2003/11/03 19:31:42 eirikn Exp $
  33  */
  34
  35 /* a < b */
  36 #define TIMEVAL_LT(a, b) (((a).tv_sec < (b).tv_sec) ||\
  37                           (((a).tv_sec == (b).tv_sec) && \
  38                             ((a).tv_usec < (b).tv_usec)))
  39
  40 /* a <= b */
  41 #define TIMEVAL_LEQ(a, b) (((a).tv_sec < (b).tv_sec) ||\
  42                            (((a).tv_sec == (b).tv_sec) &&\
  43                             ((a).tv_usec <= (b).tv_usec)))
  44
  45 struct rtadvd_timer {
  46         struct rtadvd_timer *next;
  47         struct rtadvd_timer *prev;
  48         struct rainfo *rai;
  49         struct timeval tm;
  50
  51         struct rtadvd_timer *(*expire)(void *); /* expiration function */
  52         void *expire_data;
  53         void (*update)(void *, struct timeval *);       /* update function */
  54         void *update_data;
  55 };
  56
  57 void rtadvd_timer_init(void);
  58 struct rtadvd_timer *rtadvd_add_timer(struct rtadvd_timer *(*)(void *),
  59                 void (*)(void *, struct timeval *), void *, void *);
  60 void rtadvd_set_timer(struct timeval *, struct rtadvd_timer *);
  61 void rtadvd_remove_timer(struct rtadvd_timer **);
  62 struct timeval * rtadvd_check_timer(void);
  63 struct timeval * rtadvd_timer_rest(struct rtadvd_timer *);
  64 void TIMEVAL_ADD(struct timeval *, struct timeval *,
  65                       struct timeval *);
  66 void TIMEVAL_SUB(struct timeval *, struct timeval *,
  67                       struct timeval *);