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annotate src/timer/SDL_timer.c @ 4057:0fbbaa1f9ed6 SDL-1.2

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author Patrice Mandin <patmandin@gmail.com>
date Thu, 12 Jul 2007 19:00:08 +0000
parents e02263385643
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_timer.h"
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25 #include "SDL_timer_c.h"
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26 #include "SDL_mutex.h"
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27 #include "SDL_systimer.h"
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28
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29 /* #define DEBUG_TIMERS */
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30
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31 int SDL_timer_started = 0;
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32 int SDL_timer_running = 0;
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33
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34 /* Data to handle a single periodic alarm */
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35 Uint32 SDL_alarm_interval = 0;
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36 SDL_TimerCallback SDL_alarm_callback;
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37
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38 /* Data used for a thread-based timer */
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39 static int SDL_timer_threaded = 0;
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40
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41 struct _SDL_TimerID {
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42 Uint32 interval;
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43 SDL_NewTimerCallback cb;
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44 void *param;
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45 Uint32 last_alarm;
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46 struct _SDL_TimerID *next;
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47 };
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48
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49 static SDL_TimerID SDL_timers = NULL;
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50 static SDL_mutex *SDL_timer_mutex;
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51 static volatile SDL_bool list_changed = SDL_FALSE;
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52
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53 /* Set whether or not the timer should use a thread.
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54 This should not be called while the timer subsystem is running.
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55 */
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56 int SDL_SetTimerThreaded(int value)
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57 {
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58 int retval;
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59
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60 if ( SDL_timer_started ) {
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61 SDL_SetError("Timer already initialized");
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62 retval = -1;
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63 } else {
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64 retval = 0;
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65 SDL_timer_threaded = value;
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66 }
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67 return retval;
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68 }
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69
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70 int SDL_TimerInit(void)
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71 {
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72 int retval;
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73
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74 retval = 0;
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75 if ( SDL_timer_started ) {
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76 SDL_TimerQuit();
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77 }
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78 if ( ! SDL_timer_threaded ) {
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79 retval = SDL_SYS_TimerInit();
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80 }
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81 if ( SDL_timer_threaded ) {
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82 SDL_timer_mutex = SDL_CreateMutex();
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83 }
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84 if ( retval == 0 ) {
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85 SDL_timer_started = 1;
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86 }
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87 return(retval);
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88 }
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89
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90 void SDL_TimerQuit(void)
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91 {
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92 SDL_SetTimer(0, NULL);
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93 if ( SDL_timer_threaded < 2 ) {
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94 SDL_SYS_TimerQuit();
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95 }
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96 if ( SDL_timer_threaded ) {
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97 SDL_DestroyMutex(SDL_timer_mutex);
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98 SDL_timer_mutex = NULL;
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99 }
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100 SDL_timer_started = 0;
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101 SDL_timer_threaded = 0;
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102 }
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103
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104 void SDL_ThreadedTimerCheck(void)
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105 {
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106 Uint32 now, ms;
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107 SDL_TimerID t, prev, next;
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108 SDL_bool removed;
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109
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110 SDL_mutexP(SDL_timer_mutex);
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111 list_changed = SDL_FALSE;
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112 now = SDL_GetTicks();
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113 for ( prev = NULL, t = SDL_timers; t; t = next ) {
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114 removed = SDL_FALSE;
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115 ms = t->interval - SDL_TIMESLICE;
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116 next = t->next;
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117 if ( (int)(now - t->last_alarm) > (int)ms ) {
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118 struct _SDL_TimerID timer;
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119
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120 if ( (now - t->last_alarm) < t->interval ) {
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121 t->last_alarm += t->interval;
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122 } else {
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123 t->last_alarm = now;
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124 }
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125 #ifdef DEBUG_TIMERS
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126 printf("Executing timer %p (thread = %d)\n",
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127 t, SDL_ThreadID());
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128 #endif
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129 timer = *t;
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130 SDL_mutexV(SDL_timer_mutex);
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131 ms = timer.cb(timer.interval, timer.param);
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132 SDL_mutexP(SDL_timer_mutex);
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133 if ( list_changed ) {
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134 /* Abort, list of timers modified */
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135 /* FIXME: what if ms was changed? */
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136 break;
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137 }
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138 if ( ms != t->interval ) {
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139 if ( ms ) {
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140 t->interval = ROUND_RESOLUTION(ms);
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5ba65305c954 Fix various problems with the timer code.
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diff changeset
141 } else {
5ba65305c954 Fix various problems with the timer code.
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diff changeset
142 /* Remove timer from the list */
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
143 #ifdef DEBUG_TIMERS
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
144 printf("SDL: Removing timer %p\n", t);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
145 #endif
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
146 if ( prev ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
147 prev->next = next;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
148 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
149 SDL_timers = next;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
150 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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diff changeset
151 SDL_free(t);
1028
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diff changeset
152 --SDL_timer_running;
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diff changeset
153 removed = SDL_TRUE;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
154 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
155 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
156 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
157 /* Don't update prev if the timer has disappeared */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
158 if ( ! removed ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
159 prev = t;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
160 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
161 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
162 SDL_mutexV(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
163 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
164
1028
5ba65305c954 Fix various problems with the timer code.
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diff changeset
165 static SDL_TimerID SDL_AddTimerInternal(Uint32 interval, SDL_NewTimerCallback callback, void *param)
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
166 {
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Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
167 SDL_TimerID t;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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parents: 1330
diff changeset
168 t = (SDL_TimerID) SDL_malloc(sizeof(struct _SDL_TimerID));
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
169 if ( t ) {
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Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
170 t->interval = ROUND_RESOLUTION(interval);
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
171 t->cb = callback;
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Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
172 t->param = param;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
173 t->last_alarm = SDL_GetTicks();
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
174 t->next = SDL_timers;
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Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
175 SDL_timers = t;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
176 ++SDL_timer_running;
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Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
177 list_changed = SDL_TRUE;
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Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
178 }
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
179 #ifdef DEBUG_TIMERS
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diff changeset
180 printf("SDL_AddTimer(%d) = %08x num_timers = %d\n", interval, (Uint32)t, SDL_timer_running);
5ba65305c954 Fix various problems with the timer code.
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parents: 1023
diff changeset
181 #endif
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
182 return t;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
183 }
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
184
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
185 SDL_TimerID SDL_AddTimer(Uint32 interval, SDL_NewTimerCallback callback, void *param)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
186 {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
187 SDL_TimerID t;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
188 if ( ! SDL_timer_mutex ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
189 if ( SDL_timer_started ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
190 SDL_SetError("This platform doesn't support multiple timers");
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
191 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
192 SDL_SetError("You must call SDL_Init(SDL_INIT_TIMER) first");
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
193 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
194 return NULL;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
195 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
196 if ( ! SDL_timer_threaded ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
197 SDL_SetError("Multiple timers require threaded events!");
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
198 return NULL;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
199 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
200 SDL_mutexP(SDL_timer_mutex);
1028
5ba65305c954 Fix various problems with the timer code.
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diff changeset
201 t = SDL_AddTimerInternal(interval, callback, param);
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
202 SDL_mutexV(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
203 return t;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
204 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
205
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
206 SDL_bool SDL_RemoveTimer(SDL_TimerID id)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
207 {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
208 SDL_TimerID t, prev = NULL;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
209 SDL_bool removed;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
210
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
211 removed = SDL_FALSE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
212 SDL_mutexP(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
213 /* Look for id in the linked list of timers */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
214 for (t = SDL_timers; t; prev=t, t = t->next ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215 if ( t == id ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 if(prev) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217 prev->next = t->next;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
218 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219 SDL_timers = t->next;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
220 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
221 SDL_free(t);
1028
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
222 --SDL_timer_running;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
223 removed = SDL_TRUE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224 list_changed = SDL_TRUE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225 break;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
227 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228 #ifdef DEBUG_TIMERS
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
229 printf("SDL_RemoveTimer(%08x) = %d num_timers = %d thread = %d\n", (Uint32)id, removed, SDL_timer_running, SDL_ThreadID());
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
230 #endif
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
231 SDL_mutexV(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
232 return removed;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
233 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
234
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
235 /* Old style callback functions are wrapped through this */
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 1117
diff changeset
236 static Uint32 SDLCALL callback_wrapper(Uint32 ms, void *param)
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237 {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
238 SDL_TimerCallback func = (SDL_TimerCallback) param;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
239 return (*func)(ms);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
240 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
241
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
242 int SDL_SetTimer(Uint32 ms, SDL_TimerCallback callback)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
243 {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
244 int retval;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
245
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
246 #ifdef DEBUG_TIMERS
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
247 printf("SDL_SetTimer(%d)\n", ms);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
248 #endif
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
249 retval = 0;
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
250
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
251 if ( SDL_timer_threaded ) {
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
252 SDL_mutexP(SDL_timer_mutex);
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
253 }
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254 if ( SDL_timer_running ) { /* Stop any currently running timer */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
255 if ( SDL_timer_threaded ) {
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
256 while ( SDL_timers ) {
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
257 SDL_TimerID freeme = SDL_timers;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
258 SDL_timers = SDL_timers->next;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
259 SDL_free(freeme);
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
260 }
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
261 SDL_timer_running = 0;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
262 list_changed = SDL_TRUE;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
264 SDL_SYS_StopTimer();
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
265 SDL_timer_running = 0;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
266 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
267 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
268 if ( ms ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
269 if ( SDL_timer_threaded ) {
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
270 if ( SDL_AddTimerInternal(ms, callback_wrapper, (void *)callback) == NULL ) {
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
271 retval = -1;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
272 }
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
273 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
274 SDL_timer_running = 1;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
275 SDL_alarm_interval = ms;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276 SDL_alarm_callback = callback;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 retval = SDL_SYS_StartTimer();
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
278 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279 }
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
280 if ( SDL_timer_threaded ) {
1117
95b261f445b1 From: Jim Paris <jim_jtan_com>
Ryan C. Gordon <icculus@icculus.org>
parents: 1028
diff changeset
281 SDL_mutexV(SDL_timer_mutex);
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
282 }
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
283
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 return retval;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 }