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annotate src/timer/dc/SDL_systimer.c @ 2506:ba8e99fe92c1 gsoc2008_force_feedback

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Added SDL_HapticOpened().
author Edgar Simo <bobbens@gmail.com>
date Tue, 08 Jul 2008 19:35:10 +0000
parents c121d94672cb
children 99210400e8b9
rev   line source
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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 #ifdef SDL_TIMER_DC
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25
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26 #include <kos.h>
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27
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28 #include "SDL_thread.h"
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29 #include "SDL_timer.h"
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30 #include "../SDL_timer_c.h"
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31
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32 static unsigned start;
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33
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34 /*
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35 jif = ms * HZ /1000
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36 ms = jif * 1000/HZ
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37 */
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38
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39 void
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40 SDL_StartTicks(void)
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41 {
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42 /* Set first ticks value */
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43 start = jiffies;
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44 }
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45
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46 Uint32
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47 SDL_GetTicks(void)
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48 {
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49 return ((jiffies - start) * 1000 / HZ);
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50 }
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51
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52 void
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53 SDL_Delay(Uint32 ms)
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54 {
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55 thd_sleep(ms);
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56 }
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57
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58 /* Data to handle a single periodic alarm */
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59 static int timer_alive = 0;
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60 static SDL_Thread *timer = NULL;
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61
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62 static int
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63 RunTimer(void *unused)
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64 {
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65 while (timer_alive) {
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66 if (SDL_timer_running) {
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67 SDL_ThreadedTimerCheck();
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68 }
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69 SDL_Delay(10);
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70 }
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71 return (0);
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72 }
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73
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74 /* This is only called if the event thread is not running */
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75 int
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76 SDL_SYS_TimerInit(void)
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77 {
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78 timer_alive = 1;
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79 timer = SDL_CreateThread(RunTimer, NULL);
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80 if (timer == NULL)
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81 return (-1);
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82 return (SDL_SetTimerThreaded(1));
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83 }
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84
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85 void
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86 SDL_SYS_TimerQuit(void)
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87 {
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88 timer_alive = 0;
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89 if (timer) {
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90 SDL_WaitThread(timer, NULL);
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91 timer = NULL;
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92 }
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93 }
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94
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95 int
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96 SDL_SYS_StartTimer(void)
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97 {
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98 SDL_SetError("Internal logic error: DC uses threaded timer");
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99 return (-1);
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100 }
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101
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102 void
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103 SDL_SYS_StopTimer(void)
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104 {
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105 return;
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106 }
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107
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108 #endif /* SDL_TIMER_DC */
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109 /* vi: set ts=4 sw=4 expandtab: */