diff options
author | 2016-02-27 16:28:05 +0100 | |
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committer | 2016-02-27 16:53:49 +0100 | |
commit | cf6dc7d370407914020f3e623719f09c8668c692 (patch) | |
tree | 46b3416d091b4c09b50fba7ffcbd310aed032cc8 /3rdparty/SDL2/test/testtimer.c | |
parent | 64135e73f973d9b95beb0c60b65feb34fbfec64a (diff) |
Placed SDL2 source since we need it on some platforms (nw)
Diffstat (limited to '3rdparty/SDL2/test/testtimer.c')
-rw-r--r-- | 3rdparty/SDL2/test/testtimer.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/3rdparty/SDL2/test/testtimer.c b/3rdparty/SDL2/test/testtimer.c new file mode 100644 index 00000000000..32b74909826 --- /dev/null +++ b/3rdparty/SDL2/test/testtimer.c @@ -0,0 +1,122 @@ +/* + Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely. +*/ + +/* 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, void *param) +{ + ++ticks; + return (interval); +} + +static Uint32 SDLCALL +callback(Uint32 interval, void *param) +{ + SDL_Log("Timer %d : param = %d\n", interval, (int) (uintptr_t) param); + return interval; +} + +int +main(int argc, char *argv[]) +{ + int i, desired; + SDL_TimerID t1, t2, t3; + Uint32 start32, now32; + Uint64 start, now; + + /* Enable standard application logging */ + SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO); + + if (SDL_Init(SDL_INIT_TIMER) < 0) { + SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "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; + } + t1 = SDL_AddTimer(desired, ticktock, NULL); + + /* Wait 10 seconds */ + SDL_Log("Waiting 10 seconds\n"); + SDL_Delay(10 * 1000); + + /* Stop the timer */ + SDL_RemoveTimer(t1); + + /* Print the results */ + if (ticks) { + SDL_Log("Timer resolution: desired = %d ms, actual = %f ms\n", + desired, (double) (10 * 1000) / ticks); + } + + /* Test multiple timers */ + SDL_Log("Testing multiple timers...\n"); + t1 = SDL_AddTimer(100, callback, (void *) 1); + if (!t1) + SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,"Could not create timer 1: %s\n", SDL_GetError()); + t2 = SDL_AddTimer(50, callback, (void *) 2); + if (!t2) + SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,"Could not create timer 2: %s\n", SDL_GetError()); + t3 = SDL_AddTimer(233, callback, (void *) 3); + if (!t3) + SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,"Could not create timer 3: %s\n", SDL_GetError()); + + /* Wait 10 seconds */ + SDL_Log("Waiting 10 seconds\n"); + SDL_Delay(10 * 1000); + + SDL_Log("Removing timer 1 and waiting 5 more seconds\n"); + SDL_RemoveTimer(t1); + + SDL_Delay(5 * 1000); + + SDL_RemoveTimer(t2); + SDL_RemoveTimer(t3); + + start = SDL_GetPerformanceCounter(); + for (i = 0; i < 1000000; ++i) { + ticktock(0, NULL); + } + now = SDL_GetPerformanceCounter(); + SDL_Log("1 million iterations of ticktock took %f ms\n", (double)((now - start)*1000) / SDL_GetPerformanceFrequency()); + + SDL_Log("Performance counter frequency: %"SDL_PRIu64"\n", (unsigned long long) SDL_GetPerformanceFrequency()); + start32 = SDL_GetTicks(); + start = SDL_GetPerformanceCounter(); + SDL_Delay(1000); + now = SDL_GetPerformanceCounter(); + now32 = SDL_GetTicks(); + SDL_Log("Delay 1 second = %d ms in ticks, %f ms according to performance counter\n", (now32-start32), (double)((now - start)*1000) / SDL_GetPerformanceFrequency()); + + SDL_Quit(); + return (0); +} + +/* vi: set ts=4 sw=4 expandtab: */ |