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annotate src/timer/dummy/SDL_systimer.c @ 1361:19418e4422cb

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New configure-based build system. Still work in progress, but much improved
author Sam Lantinga <slouken@libsdl.org>
date Thu, 16 Feb 2006 10:11:48 +0000
parents
children d910939febfa
rev   line source
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
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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
19418e4422cb New configure-based build system. Still work in progress, but much improved
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5 This library is free software; you can redistribute it and/or
19418e4422cb New configure-based build system. Still work in progress, but much improved
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6 modify it under the terms of the GNU Lesser General Public
19418e4422cb New configure-based build system. Still work in progress, but much improved
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7 License as published by the Free Software Foundation; either
19418e4422cb New configure-based build system. Still work in progress, but much improved
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8 version 2.1 of the License, or (at your option) any later version.
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9
19418e4422cb New configure-based build system. Still work in progress, but much improved
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10 This library is distributed in the hope that it will be useful,
19418e4422cb New configure-based build system. Still work in progress, but much improved
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
19418e4422cb New configure-based build system. Still work in progress, but much improved
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19418e4422cb New configure-based build system. Still work in progress, but much improved
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13 Lesser General Public License for more details.
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14
19418e4422cb New configure-based build system. Still work in progress, but much improved
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15 You should have received a copy of the GNU Lesser General Public
19418e4422cb New configure-based build system. Still work in progress, but much improved
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16 License along with this library; if not, write to the Free Software
19418e4422cb New configure-based build system. Still work in progress, but much improved
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
19418e4422cb New configure-based build system. Still work in progress, but much improved
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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
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23 void SDL_StartTicks(void)
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24 {
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25 }
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26
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27 Uint32 SDL_GetTicks (void)
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28 {
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29 SDL_Unsupported();
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30 return 0;
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31 }
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32
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33 void SDL_Delay (Uint32 ms)
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34 {
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35 SDL_Unsupported();
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36 }
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37
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38 #include "SDL_thread.h"
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39
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40 /* Data to handle a single periodic alarm */
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41 static int timer_alive = 0;
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42 static SDL_Thread *timer = NULL;
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43
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44 static int RunTimer(void *unused)
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45 {
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46 while ( timer_alive ) {
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47 if ( SDL_timer_running ) {
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48 SDL_ThreadedTimerCheck();
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49 }
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50 SDL_Delay(1);
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51 }
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52 return(0);
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53 }
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54
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55 /* This is only called if the event thread is not running */
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56 int SDL_SYS_TimerInit(void)
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57 {
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58 timer_alive = 1;
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59 timer = SDL_CreateThread(RunTimer, NULL);
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60 if ( timer == NULL )
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61 return(-1);
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62 return(SDL_SetTimerThreaded(1));
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63 }
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64
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65 void SDL_SYS_TimerQuit(void)
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66 {
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67 timer_alive = 0;
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68 if ( timer ) {
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69 SDL_WaitThread(timer, NULL);
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70 timer = NULL;
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71 }
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72 }
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73
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74 int SDL_SYS_StartTimer(void)
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75 {
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76 SDL_SetError("Internal logic error: threaded timer in use");
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77 return(-1);
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78 }
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79
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80 void SDL_SYS_StopTimer(void)
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81 {
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82 return;
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83 }