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2 /* Test program to check the resolution of the SDL timer on the current
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3 platform
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4 */
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5
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6 #include <stdlib.h>
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7 #include <stdio.h>
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8
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9 #include "SDL.h"
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10
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11 #define DEFAULT_RESOLUTION 1
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12
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13 static int ticks = 0;
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14
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15 static Uint32 ticktock(Uint32 interval)
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16 {
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17 ++ticks;
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18 return(interval);
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19 }
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20
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21 static Uint32 callback(Uint32 interval, void *param)
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22 {
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23 printf("Timer %d : param = %d\n", interval, (int) param);
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24 return interval;
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25 }
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26
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27 int main(int argc, char *argv[])
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28 {
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29 int desired;
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30 SDL_TimerID t1, t2, t3;
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31
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32 if ( SDL_Init(SDL_INIT_TIMER) < 0 ) {
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33 fprintf(stderr, "Couldn't load SDL: %s\n", SDL_GetError());
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34 exit(1);
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35 }
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36 atexit(SDL_Quit);
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37
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38 /* Start the timer */
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39 desired = 0;
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40 if ( argv[1] ) {
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41 desired = atoi(argv[1]);
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42 }
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43 if ( desired == 0 ) {
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44 desired = DEFAULT_RESOLUTION;
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45 }
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46 SDL_SetTimer(desired, ticktock);
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47
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48 /* Wait 10 seconds */
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49 printf("Waiting 10 seconds\n");
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50 SDL_Delay(10*1000);
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51
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52 /* Stop the timer */
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53 SDL_SetTimer(0, NULL);
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54
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55 /* Print the results */
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56 if ( ticks ) {
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57 fprintf(stderr,
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58 "Timer resolution: desired = %d ms, actual = %f ms\n",
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59 desired, (double)(10*1000)/ticks);
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60 }
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61
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62 /* Test multiple timers */
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63 printf("Testing multiple timers...\n");
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64 t1 = SDL_AddTimer(100, callback, (void*)1);
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65 if(!t1)
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66 fprintf(stderr,"Could not create timer 1\n");
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67 t2 = SDL_AddTimer(50, callback, (void*)2);
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68 if(!t2)
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69 fprintf(stderr,"Could not create timer 2\n");
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70 t3 = SDL_AddTimer(233, callback, (void*)3);
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71 if(!t3)
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72 fprintf(stderr,"Could not create timer 3\n");
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73
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74 /* Wait 10 seconds */
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75 printf("Waiting 10 seconds\n");
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76 SDL_Delay(10*1000);
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77
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78 printf("Removing timer 1 and waiting 5 more seconds\n");
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79 SDL_RemoveTimer(t1);
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80
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81 SDL_Delay(5*1000);
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82
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83 SDL_RemoveTimer(t2);
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84 SDL_RemoveTimer(t3);
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85
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86 return(0);
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87 }
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