usr.sbin/rtadvd/timer.h

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