| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2021 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" |
| |
| #include "../../core/windows/SDL_windows.h" |
| |
| #include "SDL_mutex.h" |
| |
| typedef SDL_mutex * (*pfnSDL_CreateMutex)(void); |
| typedef int (*pfnSDL_LockMutex)(SDL_mutex *); |
| typedef int (*pfnSDL_TryLockMutex)(SDL_mutex *); |
| typedef int (*pfnSDL_UnlockMutex)(SDL_mutex *); |
| typedef void (*pfnSDL_DestroyMutex)(SDL_mutex *); |
| |
| typedef enum |
| { |
| SDL_MUTEX_INVALID = 0, |
| SDL_MUTEX_SRW, |
| SDL_MUTEX_CS, |
| } SDL_MutexType; |
| |
| typedef struct SDL_mutex_impl_t |
| { |
| pfnSDL_CreateMutex Create; |
| pfnSDL_DestroyMutex Destroy; |
| pfnSDL_LockMutex Lock; |
| pfnSDL_TryLockMutex TryLock; |
| pfnSDL_UnlockMutex Unlock; |
| /* Needed by SDL_cond: */ |
| SDL_MutexType Type; |
| } SDL_mutex_impl_t; |
| |
| extern SDL_mutex_impl_t SDL_mutex_impl_active; |
| |
| |
| #ifndef SRWLOCK_INIT |
| #define SRWLOCK_INIT {0} |
| typedef struct _SRWLOCK { |
| PVOID Ptr; |
| } SRWLOCK, *PSRWLOCK; |
| #endif |
| |
| typedef struct SDL_mutex_srw |
| { |
| SRWLOCK srw; |
| /* SRW Locks are not recursive, that has to be handled by SDL: */ |
| DWORD count; |
| DWORD owner; |
| } SDL_mutex_srw; |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |