e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 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 | |
29 | void SDL_StartTicks(void) |
30 | { |
31 | } |
32 | |
33 | Uint32 SDL_GetTicks (void) |
34 | { |
35 | SDL_Unsupported(); |
36 | return 0; |
37 | } |
38 | |
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 | |
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 */ |
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 | |
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 | |
80 | int SDL_SYS_StartTimer(void) |
81 | { |
82 | SDL_SetError("Internal logic error: threaded timer in use"); |
83 | return(-1); |
84 | } |
85 | |
86 | void SDL_SYS_StopTimer(void) |
87 | { |
88 | return; |
89 | } |
90 | |
91 | #endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */ |