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comparison src/timer/wince/SDL_systimer.c @ 5131:2c500f37abcf

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merged: might need to check main.c in the iOS template to make sure no changes were abandoned.
author Eric Wing <ewing . public |-at-| gmail . com>
date Tue, 01 Feb 2011 00:37:02 -0800
parents 481dabb098ef
children b530ef003506
comparison
equal deleted inserted replaced
5078:067973aec4d8 5131:2c500f37abcf
21 */ 21 */
22 #include "SDL_config.h" 22 #include "SDL_config.h"
23 23
24 #ifdef SDL_TIMER_WINCE 24 #ifdef SDL_TIMER_WINCE
25 25
26 #define WIN32_LEAN_AND_MEAN 26 #include "../../core/windows/SDL_windows.h"
27 #include <windows.h>
28 #include <mmsystem.h>
29 27
30 #include "SDL_thread.h"
31 #include "SDL_timer.h" 28 #include "SDL_timer.h"
32 #include "../SDL_timer_c.h"
33 29
34 static Uint64 start_date; 30 static Uint64 start_date;
35 static Uint64 start_ticks; 31 static Uint64 start_ticks;
36 32
37 static Uint64 33 static Uint64
68 wce_rel_date(void) 64 wce_rel_date(void)
69 { 65 {
70 return ((Sint32) (wce_date() - start_date)); 66 return ((Sint32) (wce_date() - start_date));
71 } 67 }
72 68
69 /* Recard start-time of application for reference */
70 void
71 SDL_StartTicks(void)
72 {
73 start_date = wce_date();
74 start_ticks = wce_ticks();
75 }
76
73 /* Return time in ms relative to when SDL was started */ 77 /* Return time in ms relative to when SDL was started */
74 Uint32 78 Uint32
75 SDL_GetTicks() 79 SDL_GetTicks()
76 { 80 {
77 Sint32 offset = wce_rel_date() - wce_rel_ticks(); 81 Sint32 offset = wce_rel_date() - wce_rel_ticks();
88 SDL_Delay(Uint32 ms) 92 SDL_Delay(Uint32 ms)
89 { 93 {
90 Sleep(ms); 94 Sleep(ms);
91 } 95 }
92 96
93 /* Recard start-time of application for reference */ 97 #endif /* SDL_TIMER_WINCE */
94 void
95 SDL_StartTicks(void)
96 {
97 start_date = wce_date();
98 start_ticks = wce_ticks();
99 }
100 98
101 static UINT WIN_timer;
102
103 #if ( _WIN32_WCE <= 420 )
104
105 static HANDLE timersThread = 0;
106 static HANDLE timersQuitEvent = 0;
107
108 DWORD
109 TimersThreadProc(void *data)
110 {
111 while (WaitForSingleObject(timersQuitEvent, 10) == WAIT_TIMEOUT) {
112 SDL_ThreadedTimerCheck();
113 }
114 return 0;
115 }
116
117 int
118 SDL_SYS_TimerInit(void)
119 {
120 // create a thread to process a threaded timers
121 // SetTimer does not suit the needs because
122 // TimerCallbackProc will be called only when WM_TIMER occured
123
124 timersQuitEvent = CreateEvent(0, TRUE, FALSE, 0);
125 if (!timersQuitEvent) {
126 SDL_SetError("Cannot create event for timers thread");
127 return -1;
128 }
129 timersThread = CreateThread(NULL, 0, TimersThreadProc, 0, 0, 0);
130 if (!timersThread) {
131 SDL_SetError
132 ("Cannot create timers thread, check amount of RAM available");
133 return -1;
134 }
135 SetThreadPriority(timersThread, THREAD_PRIORITY_HIGHEST);
136
137 return (SDL_SetTimerThreaded(1));
138 }
139
140 void
141 SDL_SYS_TimerQuit(void)
142 {
143 SetEvent(timersQuitEvent);
144 if (WaitForSingleObject(timersThread, 2000) == WAIT_TIMEOUT)
145 TerminateThread(timersThread, 0);
146 CloseHandle(timersThread);
147 CloseHandle(timersQuitEvent);
148 return;
149 }
150
151 #else
152
153 #pragma comment(lib, "mmtimer.lib")
154
155 /* Data to handle a single periodic alarm */
156 static UINT timerID = 0;
157
158 static void CALLBACK
159 HandleAlarm(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
160 {
161 SDL_ThreadedTimerCheck();
162 }
163
164
165 int
166 SDL_SYS_TimerInit(void)
167 {
168 MMRESULT result;
169
170 /* Set timer resolution */
171 result = timeBeginPeriod(TIMER_RESOLUTION);
172 if (result != TIMERR_NOERROR) {
173 SDL_SetError("Warning: Can't set %d ms timer resolution",
174 TIMER_RESOLUTION);
175 }
176 /* Allow 10 ms of drift so we don't chew on CPU */
177 timerID =
178 timeSetEvent(TIMER_RESOLUTION, 1, HandleAlarm, 0, TIME_PERIODIC);
179 if (!timerID) {
180 SDL_SetError("timeSetEvent() failed");
181 return (-1);
182 }
183 return (SDL_SetTimerThreaded(1));
184 }
185
186 void
187 SDL_SYS_TimerQuit(void)
188 {
189 if (timerID) {
190 timeKillEvent(timerID);
191 }
192 timeEndPeriod(TIMER_RESOLUTION);
193 }
194
195 #endif
196
197 int
198 SDL_SYS_StartTimer(void)
199 {
200 SDL_SetError("Internal logic error: WinCE uses threaded timer");
201 return (-1);
202 }
203
204 void
205 SDL_SYS_StopTimer(void)
206 {
207 return;
208 }
209
210 #endif /* SDL_TIMER_WINCE */
211 /* vi: set ts=4 sw=4 expandtab: */ 99 /* vi: set ts=4 sw=4 expandtab: */