crypto/dist/ipsec-tools/src/racoon/schedule.h

   1 /*      $NetBSD: schedule.h,v 1.7 2009/01/23 08:25:07 tteras Exp $      */
   2
   3 /* Id: schedule.h,v 1.5 2006/05/03 21:53:42 vanhu Exp */
   4
   5 /*
   6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   7  * Copyright (C) 2008 Timo Teras.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the project nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #ifndef _SCHEDULE_H
  36 #define _SCHEDULE_H
  37
  38 #include <stddef.h>
  39
  40 #include <sys/queue.h>
  41 #if TIME_WITH_SYS_TIME
  42 # include <sys/time.h>
  43 # include <time.h>
  44 #else
  45 # if HAVE_SYS_TIME_H
  46 #  include <sys/time.h>
  47 # else
  48 #  include <time.h>
  49 # endif
  50 #endif
  51 #include "gnuc.h"
  52
  53 #ifndef offsetof
  54 #ifdef __compiler_offsetof
  55 #define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
  56 #else
  57 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
  58 #endif
  59 #endif
  60
  61 #ifndef container_of
  62 #define container_of(ptr, type, member) ({                      \
  63         const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
  64         (type *)( (char *)__mptr - offsetof(type,member) );})
  65 #endif
  66
  67
  68 /* scheduling table */
  69 /* the head is the nearest event. */
  70 struct sched {
  71         void (*func) __P((struct sched *));     /* callback on timeout */
  72         struct timeval xtime;                   /* expiration time */
  73         struct timeval tick;                    /* relative timeout */
  74         TAILQ_ENTRY(sched) chain;
  75         long id;                                /* for debug */
  76 };
  77
  78 #define SCHED_INITIALIZER() { NULL, }
  79
  80 struct scheddump {
  81         time_t xtime;
  82         long id;
  83         time_t created;
  84         time_t tick;
  85 };
  86
  87 time_t sched_monotonic_to_time_t __P((struct timeval *tv,
  88                                       struct timeval *now));
  89 void sched_get_monotonic_time __P((struct timeval *tv));
  90
  91 struct timeval *schedular __P((void));
  92 void sched_schedule __P((struct sched *, time_t,
  93                          void (*func) __P((struct sched *))));
  94 void sched_cancel __P((struct sched *));
  95
  96 int sched_dump __P((caddr_t *, int *));
  97 void sched_init __P((void));
  98
  99 #endif /* _SCHEDULE_H */