Mercurial > sdl-ios-xcode
diff test/testtimer.c @ 0:74212992fb08
Initial revision
author | Sam Lantinga <slouken@lokigames.com> |
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date | Thu, 26 Apr 2001 16:45:43 +0000 |
parents | |
children | ed57c876700d |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/testtimer.c Thu Apr 26 16:45:43 2001 +0000 @@ -0,0 +1,87 @@ + +/* Test program to check the resolution of the SDL timer on the current + platform +*/ + +#include <stdlib.h> +#include <stdio.h> + +#include "SDL.h" + +#define DEFAULT_RESOLUTION 1 + +static int ticks = 0; + +static Uint32 ticktock(Uint32 interval) +{ + ++ticks; + return(interval); +} + +static Uint32 callback(Uint32 interval, void *param) +{ + printf("Timer %d : param = %d\n", interval, (int) param); + return interval; +} + +int main(int argc, char *argv[]) +{ + int desired; + SDL_TimerID t1, t2, t3; + + if ( SDL_Init(SDL_INIT_TIMER) < 0 ) { + fprintf(stderr, "Couldn't load SDL: %s\n", SDL_GetError()); + exit(1); + } + atexit(SDL_Quit); + + /* Start the timer */ + desired = 0; + if ( argv[1] ) { + desired = atoi(argv[1]); + } + if ( desired == 0 ) { + desired = DEFAULT_RESOLUTION; + } + SDL_SetTimer(desired, ticktock); + + /* Wait 10 seconds */ + printf("Waiting 10 seconds\n"); + SDL_Delay(10*1000); + + /* Stop the timer */ + SDL_SetTimer(0, NULL); + + /* Print the results */ + if ( ticks ) { + fprintf(stderr, + "Timer resolution: desired = %d ms, actual = %f ms\n", + desired, (double)(10*1000)/ticks); + } + + /* Test multiple timers */ + printf("Testing multiple timers...\n"); + t1 = SDL_AddTimer(100, callback, (void*)1); + if(!t1) + fprintf(stderr,"Could not create timer 1\n"); + t2 = SDL_AddTimer(50, callback, (void*)2); + if(!t2) + fprintf(stderr,"Could not create timer 2\n"); + t3 = SDL_AddTimer(233, callback, (void*)3); + if(!t3) + fprintf(stderr,"Could not create timer 3\n"); + + /* Wait 10 seconds */ + printf("Waiting 10 seconds\n"); + SDL_Delay(10*1000); + + printf("Removing timer 1 and waiting 5 more seconds\n"); + SDL_RemoveTimer(t1); + + SDL_Delay(5*1000); + + SDL_RemoveTimer(t2); + SDL_RemoveTimer(t3); + + return(0); +}