mirror of
https://github.com/Relintai/sdl2_frt.git
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0e45984fa0
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
123 lines
3.4 KiB
C
123 lines
3.4 KiB
C
/*
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Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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/* Test program to check the resolution of the SDL timer on the current
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platform
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include "SDL.h"
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#define DEFAULT_RESOLUTION 1
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static int ticks = 0;
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static Uint32 SDLCALL
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ticktock(Uint32 interval, void *param)
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{
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++ticks;
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return (interval);
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}
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static Uint32 SDLCALL
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callback(Uint32 interval, void *param)
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{
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SDL_Log("Timer %d : param = %d\n", interval, (int) (uintptr_t) param);
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return interval;
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}
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int
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main(int argc, char *argv[])
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{
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int i, desired;
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SDL_TimerID t1, t2, t3;
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Uint32 start32, now32;
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Uint64 start, now;
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/* Enable standard application logging */
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SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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if (SDL_Init(SDL_INIT_TIMER) < 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
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return (1);
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}
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/* Start the timer */
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desired = 0;
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if (argv[1]) {
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desired = atoi(argv[1]);
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}
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if (desired == 0) {
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desired = DEFAULT_RESOLUTION;
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}
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t1 = SDL_AddTimer(desired, ticktock, NULL);
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/* Wait 10 seconds */
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SDL_Log("Waiting 10 seconds\n");
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SDL_Delay(10 * 1000);
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/* Stop the timer */
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SDL_RemoveTimer(t1);
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/* Print the results */
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if (ticks) {
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SDL_Log("Timer resolution: desired = %d ms, actual = %f ms\n",
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desired, (double) (10 * 1000) / ticks);
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}
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/* Test multiple timers */
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SDL_Log("Testing multiple timers...\n");
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t1 = SDL_AddTimer(100, callback, (void *) 1);
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if (!t1)
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,"Could not create timer 1: %s\n", SDL_GetError());
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t2 = SDL_AddTimer(50, callback, (void *) 2);
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if (!t2)
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,"Could not create timer 2: %s\n", SDL_GetError());
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t3 = SDL_AddTimer(233, callback, (void *) 3);
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if (!t3)
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,"Could not create timer 3: %s\n", SDL_GetError());
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/* Wait 10 seconds */
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SDL_Log("Waiting 10 seconds\n");
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SDL_Delay(10 * 1000);
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SDL_Log("Removing timer 1 and waiting 5 more seconds\n");
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SDL_RemoveTimer(t1);
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SDL_Delay(5 * 1000);
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SDL_RemoveTimer(t2);
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SDL_RemoveTimer(t3);
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start = SDL_GetPerformanceCounter();
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for (i = 0; i < 1000000; ++i) {
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ticktock(0, NULL);
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}
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now = SDL_GetPerformanceCounter();
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SDL_Log("1 million iterations of ticktock took %f ms\n", (double)((now - start)*1000) / SDL_GetPerformanceFrequency());
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SDL_Log("Performance counter frequency: %"PRIu64"\n", (unsigned long long) SDL_GetPerformanceFrequency());
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start32 = SDL_GetTicks();
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start = SDL_GetPerformanceCounter();
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SDL_Delay(1000);
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now = SDL_GetPerformanceCounter();
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now32 = SDL_GetTicks();
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SDL_Log("Delay 1 second = %d ms in ticks, %f ms according to performance counter\n", (now32-start32), (double)((now - start)*1000) / SDL_GetPerformanceFrequency());
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SDL_Quit();
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return (0);
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}
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/* vi: set ts=4 sw=4 expandtab: */
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