diff options
Diffstat (limited to '3rdparty/SDL2/src/thread/windows/SDL_sysmutex.c')
-rw-r--r-- | 3rdparty/SDL2/src/thread/windows/SDL_sysmutex.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/3rdparty/SDL2/src/thread/windows/SDL_sysmutex.c b/3rdparty/SDL2/src/thread/windows/SDL_sysmutex.c deleted file mode 100644 index 413cb67037f..00000000000 --- a/3rdparty/SDL2/src/thread/windows/SDL_sysmutex.c +++ /dev/null @@ -1,110 +0,0 @@ -/* - Simple DirectMedia Layer - 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, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ -#include "../../SDL_internal.h" - -#if SDL_THREAD_WINDOWS - -/* Mutex functions using the Win32 API */ - -#include "../../core/windows/SDL_windows.h" - -#include "SDL_mutex.h" - - -struct SDL_mutex -{ - CRITICAL_SECTION cs; -}; - -/* Create a mutex */ -SDL_mutex * -SDL_CreateMutex(void) -{ - SDL_mutex *mutex; - - /* Allocate mutex memory */ - mutex = (SDL_mutex *) SDL_malloc(sizeof(*mutex)); - if (mutex) { - /* Initialize */ - /* On SMP systems, a non-zero spin count generally helps performance */ -#if __WINRT__ - InitializeCriticalSectionEx(&mutex->cs, 2000, 0); -#else - InitializeCriticalSectionAndSpinCount(&mutex->cs, 2000); -#endif - } else { - SDL_OutOfMemory(); - } - return (mutex); -} - -/* Free the mutex */ -void -SDL_DestroyMutex(SDL_mutex * mutex) -{ - if (mutex) { - DeleteCriticalSection(&mutex->cs); - SDL_free(mutex); - } -} - -/* Lock the mutex */ -int -SDL_LockMutex(SDL_mutex * mutex) -{ - if (mutex == NULL) { - return SDL_SetError("Passed a NULL mutex"); - } - - EnterCriticalSection(&mutex->cs); - return (0); -} - -/* TryLock the mutex */ -int -SDL_TryLockMutex(SDL_mutex * mutex) -{ - int retval = 0; - if (mutex == NULL) { - return SDL_SetError("Passed a NULL mutex"); - } - - if (TryEnterCriticalSection(&mutex->cs) == 0) { - retval = SDL_MUTEX_TIMEDOUT; - } - return retval; -} - -/* Unlock the mutex */ -int -SDL_UnlockMutex(SDL_mutex * mutex) -{ - if (mutex == NULL) { - return SDL_SetError("Passed a NULL mutex"); - } - - LeaveCriticalSection(&mutex->cs); - return (0); -} - -#endif /* SDL_THREAD_WINDOWS */ - -/* vi: set ts=4 sw=4 expandtab: */ |