1 /* $NetBSD: schedule.h,v 1.8 2009/08/17 12:00:53 vanhu 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 */ 100