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annotate src/timer/SDL_timer.c @ 1117:95b261f445b1

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From: Jim Paris <jim_jtan_com> To: sdl@libsdl.org Date: Sat, 9 Jul 2005 13:59:33 -0400 Subject: [PATCH] fix locking in src/timer/SYS_timer.c SDL_SetTimer has a typo in CVS. This code was added since 1.2.8. The result is that the SDL_timer_mutex is locked twice and never unlocked, breaking systems that use a threaded timer implementation. -jim
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 17 Aug 2005 00:19:45 +0000
parents 5ba65305c954
children 173c063d4f55
rev   line source
1
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 5635-34 Springhouse Dr.
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21 Pleasanton, CA 94588 (USA)
252
e8157fcb3114 Updated the source with the correct e-mail address
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22 slouken@libsdl.org
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23 */
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24
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25 #ifdef SAVE_RCSID
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26 static char rcsid =
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27 "@(#) $Id$";
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28 #endif
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29
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30 #include <stdlib.h>
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31 #include <stdio.h> /* For the definition of NULL */
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32
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33 #include "SDL_error.h"
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34 #include "SDL_timer.h"
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35 #include "SDL_timer_c.h"
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36 #include "SDL_mutex.h"
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37 #include "SDL_systimer.h"
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38
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39 /* #define DEBUG_TIMERS */
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40
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41 int SDL_timer_started = 0;
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42 int SDL_timer_running = 0;
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43
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44 /* Data to handle a single periodic alarm */
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45 Uint32 SDL_alarm_interval = 0;
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46 SDL_TimerCallback SDL_alarm_callback;
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47
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48 /* Data used for a thread-based timer */
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49 static int SDL_timer_threaded = 0;
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50
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51 struct _SDL_TimerID {
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52 Uint32 interval;
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53 SDL_NewTimerCallback cb;
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54 void *param;
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55 Uint32 last_alarm;
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56 struct _SDL_TimerID *next;
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57 };
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58
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59 static SDL_TimerID SDL_timers = NULL;
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60 static SDL_mutex *SDL_timer_mutex;
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61 static volatile SDL_bool list_changed = SDL_FALSE;
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62
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63 /* Set whether or not the timer should use a thread.
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64 This should not be called while the timer subsystem is running.
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65 */
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66 int SDL_SetTimerThreaded(int value)
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67 {
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68 int retval;
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69
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70 if ( SDL_timer_started ) {
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71 SDL_SetError("Timer already initialized");
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72 retval = -1;
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73 } else {
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74 retval = 0;
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75 SDL_timer_threaded = value;
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76 }
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77 return retval;
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78 }
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79
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80 int SDL_TimerInit(void)
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81 {
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82 int retval;
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83
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84 retval = 0;
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85 if ( SDL_timer_started ) {
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86 SDL_TimerQuit();
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87 }
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88 if ( ! SDL_timer_threaded ) {
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89 retval = SDL_SYS_TimerInit();
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90 }
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91 if ( SDL_timer_threaded ) {
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92 SDL_timer_mutex = SDL_CreateMutex();
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93 }
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94 if ( retval == 0 ) {
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95 SDL_timer_started = 1;
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96 }
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97 return(retval);
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98 }
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99
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100 void SDL_TimerQuit(void)
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101 {
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102 SDL_SetTimer(0, NULL);
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103 if ( SDL_timer_threaded < 2 ) {
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104 SDL_SYS_TimerQuit();
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105 }
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106 if ( SDL_timer_threaded ) {
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107 SDL_DestroyMutex(SDL_timer_mutex);
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108 }
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109 SDL_timer_started = 0;
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110 SDL_timer_threaded = 0;
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111 }
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112
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113 void SDL_ThreadedTimerCheck(void)
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114 {
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115 Uint32 now, ms;
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116 SDL_TimerID t, prev, next;
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117 SDL_bool removed;
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118
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119 SDL_mutexP(SDL_timer_mutex);
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120 list_changed = SDL_FALSE;
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121 now = SDL_GetTicks();
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122 for ( prev = NULL, t = SDL_timers; t; t = next ) {
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123 removed = SDL_FALSE;
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124 ms = t->interval - SDL_TIMESLICE;
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125 next = t->next;
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126 if ( (int)(now - t->last_alarm) > (int)ms ) {
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127 struct _SDL_TimerID timer;
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128
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129 if ( (now - t->last_alarm) < t->interval ) {
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130 t->last_alarm += t->interval;
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131 } else {
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132 t->last_alarm = now;
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133 }
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134 #ifdef DEBUG_TIMERS
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135 printf("Executing timer %p (thread = %d)\n",
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136 t, SDL_ThreadID());
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137 #endif
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138 timer = *t;
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139 SDL_mutexV(SDL_timer_mutex);
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140 ms = timer.cb(timer.interval, timer.param);
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
141 SDL_mutexP(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
142 if ( list_changed ) {
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diff changeset
143 /* Abort, list of timers modified */
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diff changeset
144 /* FIXME: what if ms was changed? */
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
145 break;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
146 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
147 if ( ms != t->interval ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
148 if ( ms ) {
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parents:
diff changeset
149 t->interval = ROUND_RESOLUTION(ms);
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diff changeset
150 } else {
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diff changeset
151 /* Remove timer from the list */
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
152 #ifdef DEBUG_TIMERS
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
153 printf("SDL: Removing timer %p\n", t);
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
154 #endif
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
155 if ( prev ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
156 prev->next = next;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
157 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
158 SDL_timers = next;
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
159 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
160 free(t);
1028
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161 --SDL_timer_running;
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diff changeset
162 removed = SDL_TRUE;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
163 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
164 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
165 }
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parents:
diff changeset
166 /* 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
167 if ( ! removed ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
168 prev = t;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
169 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
170 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
171 SDL_mutexV(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
172 }
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diff changeset
173
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174 static SDL_TimerID SDL_AddTimerInternal(Uint32 interval, SDL_NewTimerCallback callback, void *param)
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175 {
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diff changeset
176 SDL_TimerID t;
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diff changeset
177 t = (SDL_TimerID) malloc(sizeof(struct _SDL_TimerID));
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diff changeset
178 if ( t ) {
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diff changeset
179 t->interval = ROUND_RESOLUTION(interval);
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diff changeset
180 t->cb = callback;
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diff changeset
181 t->param = param;
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diff changeset
182 t->last_alarm = SDL_GetTicks();
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diff changeset
183 t->next = SDL_timers;
5ba65305c954 Fix various problems with the timer code.
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diff changeset
184 SDL_timers = t;
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diff changeset
185 ++SDL_timer_running;
5ba65305c954 Fix various problems with the timer code.
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diff changeset
186 list_changed = SDL_TRUE;
5ba65305c954 Fix various problems with the timer code.
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diff changeset
187 }
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
188 #ifdef DEBUG_TIMERS
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diff changeset
189 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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diff changeset
190 #endif
5ba65305c954 Fix various problems with the timer code.
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diff changeset
191 return t;
5ba65305c954 Fix various problems with the timer code.
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diff changeset
192 }
5ba65305c954 Fix various problems with the timer code.
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diff changeset
193
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
194 SDL_TimerID SDL_AddTimer(Uint32 interval, SDL_NewTimerCallback callback, void *param)
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
195 {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
196 SDL_TimerID t;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
197 if ( ! SDL_timer_mutex ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
198 if ( SDL_timer_started ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
199 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
200 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
201 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
202 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
203 return NULL;
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 if ( ! SDL_timer_threaded ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
206 SDL_SetError("Multiple timers require threaded events!");
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
207 return NULL;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
208 }
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
209 SDL_mutexP(SDL_timer_mutex);
1028
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diff changeset
210 t = SDL_AddTimerInternal(interval, callback, param);
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
211 SDL_mutexV(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
212 return t;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
213 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
214
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215 SDL_bool SDL_RemoveTimer(SDL_TimerID id)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217 SDL_TimerID t, prev = NULL;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
218 SDL_bool removed;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents:
diff changeset
220 removed = SDL_FALSE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
221 SDL_mutexP(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
222 /* 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
223 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
224 if ( t == id ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225 if(prev) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226 prev->next = t->next;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
227 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228 SDL_timers = t->next;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
229 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
230 free(t);
1028
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parents: 1023
diff changeset
231 --SDL_timer_running;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
232 removed = SDL_TRUE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
233 list_changed = SDL_TRUE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
234 break;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
235 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
236 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237 #ifdef DEBUG_TIMERS
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
238 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
239 #endif
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
240 SDL_mutexV(SDL_timer_mutex);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
241 return removed;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
242 }
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 /* Old style callback functions are wrapped through this */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
245 static Uint32 callback_wrapper(Uint32 ms, void *param)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
246 {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
247 SDL_TimerCallback func = (SDL_TimerCallback) param;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
248 return (*func)(ms);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
249 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
250
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
251 int SDL_SetTimer(Uint32 ms, SDL_TimerCallback callback)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
252 {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
253 int retval;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
255 #ifdef DEBUG_TIMERS
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
256 printf("SDL_SetTimer(%d)\n", ms);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
257 #endif
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
258 retval = 0;
1028
5ba65305c954 Fix various problems with the timer code.
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diff changeset
259
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
260 if ( SDL_timer_threaded ) {
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
261 SDL_mutexP(SDL_timer_mutex);
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
262 }
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 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
264 if ( SDL_timer_threaded ) {
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
265 while ( SDL_timers ) {
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
266 SDL_TimerID freeme = SDL_timers;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
267 SDL_timers = SDL_timers->next;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
268 free(freeme);
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
269 }
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
270 SDL_timer_running = 0;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
271 list_changed = SDL_TRUE;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
272 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
273 SDL_SYS_StopTimer();
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
274 SDL_timer_running = 0;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
275 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 if ( ms ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
278 if ( SDL_timer_threaded ) {
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
279 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
280 retval = -1;
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
diff changeset
281 }
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 SDL_timer_running = 1;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 SDL_alarm_interval = ms;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 SDL_alarm_callback = callback;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
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286 retval = SDL_SYS_StartTimer();
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
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287 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
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288 }
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
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289 if ( SDL_timer_threaded ) {
1117
95b261f445b1 From: Jim Paris <jim_jtan_com>
Ryan C. Gordon <icculus@icculus.org>
parents: 1028
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290 SDL_mutexV(SDL_timer_mutex);
1028
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
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291 }
5ba65305c954 Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents: 1023
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292
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
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293 return retval;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
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294 }