release/src/router/dhcpv6/timer.h

   1 /*      $KAME: timer.h,v 1.1 2002/05/16 06:04:08 jinmei Exp $   */
   2
   3 /*
   4  * Copyright (C) 2002 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 /* a <= b */
  37 #define TIMEVAL_LEQ(a, b) (((a).tv_sec < (b).tv_sec) ||\
  38                            (((a).tv_sec == (b).tv_sec) &&\
  39                             ((a).tv_usec <= (b).tv_usec)))
  40 /* a == b */
  41 #define TIMEVAL_EQUAL(a, b) ((a).tv_sec == (b).tv_sec &&\
  42                              (a).tv_usec == (b).tv_usec)
  43
  44 struct dhcp6_timer {
  45         LIST_ENTRY(dhcp6_timer) link;
  46
  47         struct timeval tm;
  48
  49         struct dhcp6_timer *(*expire) __P((void *));
  50         void *expire_data;
  51 };
  52
  53 void dhcp6_timer_init __P((void));
  54 struct dhcp6_timer *dhcp6_add_timer __P((struct dhcp6_timer *(*) __P((void *)),
  55                                          void *));
  56 void dhcp6_set_timer __P((struct timeval *, struct dhcp6_timer *));
  57 void dhcp6_remove_timer __P((struct dhcp6_timer **));
  58 struct timeval * dhcp6_check_timer __P((void));
  59 struct timeval * dhcp6_timer_rest __P((struct dhcp6_timer *));
  60
  61 void timeval_sub __P((struct timeval *, struct timeval *,
  62                              struct timeval *));