diff options
Diffstat (limited to '3rdparty/SDL2/src/thread/stdcpp/SDL_sysmutex.cpp')
-rw-r--r-- | 3rdparty/SDL2/src/thread/stdcpp/SDL_sysmutex.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/3rdparty/SDL2/src/thread/stdcpp/SDL_sysmutex.cpp b/3rdparty/SDL2/src/thread/stdcpp/SDL_sysmutex.cpp new file mode 100644 index 00000000000..04028627d07 --- /dev/null +++ b/3rdparty/SDL2/src/thread/stdcpp/SDL_sysmutex.cpp @@ -0,0 +1,111 @@ +/* + 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" + +extern "C" { +#include "SDL_thread.h" +#include "SDL_systhread_c.h" +#include "SDL_log.h" +} + +#include <system_error> + +#include "SDL_sysmutex_c.h" +#include <Windows.h> + + +/* Create a mutex */ +extern "C" +SDL_mutex * +SDL_CreateMutex(void) +{ + /* Allocate and initialize the mutex */ + try { + SDL_mutex * mutex = new SDL_mutex; + return mutex; + } catch (std::system_error & ex) { + SDL_SetError("unable to create a C++ mutex: code=%d; %s", ex.code(), ex.what()); + return NULL; + } catch (std::bad_alloc &) { + SDL_OutOfMemory(); + return NULL; + } +} + +/* Free the mutex */ +extern "C" +void +SDL_DestroyMutex(SDL_mutex * mutex) +{ + if (mutex) { + delete mutex; + } +} + +/* Lock the semaphore */ +extern "C" +int +SDL_mutexP(SDL_mutex * mutex) +{ + if (mutex == NULL) { + SDL_SetError("Passed a NULL mutex"); + return -1; + } + + try { + mutex->cpp_mutex.lock(); + return 0; + } catch (std::system_error & ex) { + SDL_SetError("unable to lock a C++ mutex: code=%d; %s", ex.code(), ex.what()); + return -1; + } +} + +/* TryLock the mutex */ +int +SDL_TryLockMutex(SDL_mutex * mutex) +{ + int retval = 0; + if (mutex == NULL) { + return SDL_SetError("Passed a NULL mutex"); + } + + if (mutex->cpp_mutex.try_lock() == false) { + retval = SDL_MUTEX_TIMEDOUT; + } + return retval; +} + +/* Unlock the mutex */ +extern "C" +int +SDL_mutexV(SDL_mutex * mutex) +{ + if (mutex == NULL) { + SDL_SetError("Passed a NULL mutex"); + return -1; + } + + mutex->cpp_mutex.unlock(); + return 0; +} + +/* vi: set ts=4 sw=4 expandtab: */ |