src/timer/dummy/SDL_systimer.c
author Edward Rudd
Sat, 17 Aug 2013 18:07:29 -0400
changeset 7649 4f801cd08f3f
parent 6885 700f1b25f77f
child 8093 b43765095a6f
permissions -rw-r--r--
auto init the ticks if the GetTicks and the like methods are called before SDL_Init().. This prevents annoying game bugs such as caching SDL_GetPerformanceFrequency in a static initializer
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2013 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, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_config.h"
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#if defined(SDL_TIMER_DUMMY) || defined(SDL_TIMERS_DISABLED)
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#include "SDL_timer.h"
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static SDL_bool ticks_started = SDL_FALSE;
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void
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SDL_InitTicks(void)
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{
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    if (ticks_started) {
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        return;
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    }
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    ticks_started = SDL_TRUE;
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}
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Uint32
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SDL_GetTicks(void)
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{
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    if (!ticks_started) {
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        SDL_InitTicks();
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    }
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    SDL_Unsupported();
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    return 0;
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}
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Uint64
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SDL_GetPerformanceCounter(void)
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{
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    return SDL_GetTicks();
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}
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Uint64
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SDL_GetPerformanceFrequency(void)
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{
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    return 1000;
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}
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void
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SDL_Delay(Uint32 ms)
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{
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    SDL_Unsupported();
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}
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#endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */
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