libretro-common/rthreads/xenon_sdl_threads.c
2017-01-22 13:58:48 +01:00

60 lines
2.1 KiB
C

/* Copyright (C) 2010-2017 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (xenon_sdl_threads.c).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/* libSDLxenon doesn't implement this yet :[. Implement it very stupidly for now. ;) */
#include "SDL_thread.h"
#include "SDL_mutex.h"
#include <stdlib.h>
#include <boolean.h>
SDL_cond *SDL_CreateCond(void)
{
bool *sleeping = calloc(1, sizeof(*sleeping));
return (SDL_cond*)sleeping;
}
void SDL_DestroyCond(SDL_cond *sleeping)
{
free(sleeping);
}
int SDL_CondWait(SDL_cond *cond, SDL_mutex *lock)
{
(void)lock;
volatile bool *sleeping = (volatile bool*)cond;
SDL_mutexV(lock);
*sleeping = true;
while (*sleeping); /* Yeah, we all love busyloops don't we? ._. */
SDL_mutexP(lock);
return 0;
}
int SDL_CondSignal(SDL_cond *cond)
{
*(volatile bool*)cond = false;
return 0;
}