1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #if defined(SDL_TIMER_DUMMY) || defined(SDL_TIMERS_DISABLED)
25
26 #include "SDL_timer.h"
27 #include "../SDL_timer_c.h"
28
SDL_StartTicks(void)29 void SDL_StartTicks(void)
30 {
31 }
32
SDL_GetTicks(void)33 Uint32 SDL_GetTicks (void)
34 {
35 SDL_Unsupported();
36 return 0;
37 }
38
SDL_Delay(Uint32 ms)39 void SDL_Delay (Uint32 ms)
40 {
41 SDL_Unsupported();
42 }
43
44 #include "SDL_thread.h"
45
46 /* Data to handle a single periodic alarm */
47 static int timer_alive = 0;
48 static SDL_Thread *timer = NULL;
49
RunTimer(void * unused)50 static int RunTimer(void *unused)
51 {
52 while ( timer_alive ) {
53 if ( SDL_timer_running ) {
54 SDL_ThreadedTimerCheck();
55 }
56 SDL_Delay(1);
57 }
58 return(0);
59 }
60
61 /* This is only called if the event thread is not running */
SDL_SYS_TimerInit(void)62 int SDL_SYS_TimerInit(void)
63 {
64 timer_alive = 1;
65 timer = SDL_CreateThread(RunTimer, NULL);
66 if ( timer == NULL )
67 return(-1);
68 return(SDL_SetTimerThreaded(1));
69 }
70
SDL_SYS_TimerQuit(void)71 void SDL_SYS_TimerQuit(void)
72 {
73 timer_alive = 0;
74 if ( timer ) {
75 SDL_WaitThread(timer, NULL);
76 timer = NULL;
77 }
78 }
79
SDL_SYS_StartTimer(void)80 int SDL_SYS_StartTimer(void)
81 {
82 SDL_SetError("Internal logic error: threaded timer in use");
83 return(-1);
84 }
85
SDL_SYS_StopTimer(void)86 void SDL_SYS_StopTimer(void)
87 {
88 return;
89 }
90
91 #endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */
92