Mercurial > sdl-ios-xcode
view test/testtimer.c @ 4539:d2517c0de52b SDL-1.2
Debian patch: 012_nasm_include.diff
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 18 Jul 2010 07:55:34 -0700 |
parents | 290b5baf2fca |
children | 782fd950bd46 c121d94672cb |
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/* 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 SDLCALL ticktock(Uint32 interval) { ++ticks; return(interval); } static Uint32 SDLCALL callback(Uint32 interval, void *param) { printf("Timer %d : param = %d\n", interval, (int)(uintptr_t)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 initialize SDL: %s\n", SDL_GetError()); return(1); } /* 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: %s\n", SDL_GetError()); t2 = SDL_AddTimer(50, callback, (void*)2); if(!t2) fprintf(stderr,"Could not create timer 2: %s\n", SDL_GetError()); t3 = SDL_AddTimer(233, callback, (void*)3); if(!t3) fprintf(stderr,"Could not create timer 3: %s\n", SDL_GetError()); /* 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); SDL_Quit(); return(0); }