/* $Id: timer.c,v 1.2 2004/01/18 09:01:45 reinelt Exp $ * * generic timer handling * * Copyright 2003,2004 Michael Reinelt * Copyright 2004 The LCD4Linux Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: timer.c,v $ * Revision 1.2 2004/01/18 09:01:45 reinelt * /proc/stat parsing finished * * Revision 1.1 2004/01/13 08:18:20 reinelt * timer queues added * liblcd4linux deactivated turing transformation to new layout * */ /* * exported functions: * * int timer_junk(void) * Fixme: document me :-( * */ #include #include #include #include #include #include "debug.h" #include "cfg.h" #include "timer.h" typedef struct TIMER { void (*callback)(void *data); void *data; struct timeval when; int interval; int one_shot; int active; } TIMER; TIMER *Timers=NULL; int nTimers=0; static void timer_inc (struct timeval *tv, int msec) { tv->tv_sec += msec / 1000; tv->tv_usec += (msec - 1000*(msec/1000)) * 1000; if (tv->tv_usec >= 1000000) { tv->tv_usec -= 1000000; tv->tv_sec++; } } int timer_add (void (*callback)(void *data), void *data, int interval, int one_shot) { int i; struct timeval now; gettimeofday(&now, NULL); // find a free slot for (i=0; i=nTimers) { nTimers++; Timers=realloc(Timers, nTimers*sizeof(*Timers)); } // fill slot Timers[i].callback = callback; Timers[i].data = data; Timers[i].when = now; Timers[i].interval = interval; Timers[i].one_shot = one_shot; Timers[i].active = 1; // if one-shot timer, don't fire now if (one_shot) { timer_inc (&Timers[i].when, interval); } return 0; } int timer_process (struct timespec *delay) { int i, flag, min; struct timeval now; // the current moment gettimeofday(&now, NULL); // sanity check if (nTimers==0) { error ("huh? not one single timer to process? dazed and confused..."); return -1; } // process expired timers flag=0; for (i=0; itv_sec = Timers[min].when.tv_sec - now.tv_sec; delay->tv_nsec = Timers[min].when.tv_usec - now.tv_usec; if (delay->tv_nsec<0) { delay->tv_sec--; delay->tv_nsec += 1000000; } // nanoseconds!! delay->tv_nsec *= 1000; return 0; } n38'>38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179