1 | /* $NetBSD: schedule.h,v 1.8 2009/08/17 12:00:53 vanhu Exp $ */ |
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2 | |
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3 | /* Id: schedule.h,v 1.5 2006/05/03 21:53:42 vanhu Exp */ |
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4 | |
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5 | /* |
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6 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
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7 | * Copyright (C) 2008 Timo Teras. |
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8 | * All rights reserved. |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * 3. Neither the name of the project nor the names of its contributors |
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19 | * may be used to endorse or promote products derived from this software |
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20 | * without specific prior written permission. |
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21 | * |
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22 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
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23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
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26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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32 | * SUCH DAMAGE. |
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33 | */ |
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34 | |
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35 | #ifndef _SCHEDULE_H |
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36 | #define _SCHEDULE_H |
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37 | |
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38 | #include <stddef.h> |
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39 | |
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40 | #include <sys/queue.h> |
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41 | #if TIME_WITH_SYS_TIME |
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42 | # include <sys/time.h> |
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43 | # include <time.h> |
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44 | #else |
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45 | # if HAVE_SYS_TIME_H |
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46 | # include <sys/time.h> |
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47 | # else |
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48 | # include <time.h> |
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49 | # endif |
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50 | #endif |
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51 | #include "gnuc.h" |
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52 | |
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53 | #ifndef offsetof |
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54 | #ifdef __compiler_offsetof |
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55 | #define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER) |
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56 | #else |
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57 | #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) |
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58 | #endif |
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59 | #endif |
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60 | |
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61 | #ifndef container_of |
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62 | #define container_of(ptr, type, member) ({ \ |
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63 | const typeof( ((type *)0)->member ) *__mptr = (ptr); \ |
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64 | (type *)( (char *)__mptr - offsetof(type,member) );}) |
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65 | #endif |
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66 | |
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67 | |
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68 | /* scheduling table */ |
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69 | /* the head is the nearest event. */ |
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70 | struct sched { |
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71 | void (*func) __P((struct sched *)); /* callback on timeout */ |
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72 | struct timeval xtime; /* expiration time */ |
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73 | struct timeval tick; /* relative timeout */ |
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74 | TAILQ_ENTRY(sched) chain; |
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75 | long id; /* for debug */ |
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76 | }; |
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77 | |
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78 | #define SCHED_INITIALIZER() { NULL, } |
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79 | |
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80 | struct scheddump { |
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81 | time_t xtime; |
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82 | long id; |
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83 | time_t created; |
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84 | time_t tick; |
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85 | }; |
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86 | |
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87 | time_t sched_monotonic_to_time_t __P((struct timeval *tv, |
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88 | struct timeval *now)); |
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89 | void sched_get_monotonic_time __P((struct timeval *tv)); |
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90 | |
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91 | struct timeval *schedular __P((void)); |
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92 | void sched_schedule __P((struct sched *, time_t, |
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93 | void (*func) __P((struct sched *)))); |
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94 | void sched_cancel __P((struct sched *)); |
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95 | |
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96 | int sched_dump __P((caddr_t *, int *)); |
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97 | void sched_init __P((void)); |
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98 | |
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99 | #endif /* _SCHEDULE_H */ |
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