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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 #if defined(SDL_TIMER_DUMMY) || defined(SDL_TIMERS_DISABLED) |
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25 |
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26 #include "SDL_timer.h" |
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27 #include "../SDL_timer_c.h" |
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28 |
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29 void SDL_StartTicks(void) |
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30 { |
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31 } |
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32 |
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33 Uint32 SDL_GetTicks (void) |
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34 { |
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35 SDL_Unsupported(); |
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36 return 0; |
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37 } |
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38 |
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39 void SDL_Delay (Uint32 ms) |
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40 { |
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41 SDL_Unsupported(); |
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42 } |
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43 |
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44 #include "SDL_thread.h" |
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45 |
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46 /* Data to handle a single periodic alarm */ |
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47 static int timer_alive = 0; |
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48 static SDL_Thread *timer = NULL; |
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49 |
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50 static int RunTimer(void *unused) |
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51 { |
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52 while ( timer_alive ) { |
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53 if ( SDL_timer_running ) { |
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54 SDL_ThreadedTimerCheck(); |
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55 } |
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56 SDL_Delay(1); |
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57 } |
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58 return(0); |
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59 } |
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60 |
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61 /* This is only called if the event thread is not running */ |
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62 int SDL_SYS_TimerInit(void) |
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63 { |
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64 timer_alive = 1; |
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65 timer = SDL_CreateThread(RunTimer, NULL); |
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66 if ( timer == NULL ) |
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67 return(-1); |
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68 return(SDL_SetTimerThreaded(1)); |
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69 } |
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70 |
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71 void SDL_SYS_TimerQuit(void) |
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72 { |
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73 timer_alive = 0; |
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74 if ( timer ) { |
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75 SDL_WaitThread(timer, NULL); |
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76 timer = NULL; |
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77 } |
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78 } |
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79 |
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80 int SDL_SYS_StartTimer(void) |
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81 { |
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82 SDL_SetError("Internal logic error: threaded timer in use"); |
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83 return(-1); |
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84 } |
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85 |
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86 void SDL_SYS_StopTimer(void) |
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87 { |
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88 return; |
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89 } |
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90 |
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91 #endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */ |