113 lines
2.9 KiB
C++
113 lines
2.9 KiB
C++
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2012 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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extern "C" {
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#include "SDL_thread.h"
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#include "SDL_systhread_c.h"
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#include "SDL_log.h"
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}
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#include <exception>
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#include "SDL_sysmutex_c.h"
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#include <Windows.h>
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/* Create a mutex */
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extern "C"
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SDL_mutex *
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SDL_CreateMutex(void)
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{
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/* Allocate and initialize the mutex */
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try {
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SDL_mutex * mutex = new SDL_mutex;
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return mutex;
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} catch (std::exception & ex) {
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SDL_SetError("unable to create C++ mutex: %s", ex.what());
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return NULL;
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} catch (...) {
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SDL_SetError("unable to create C++ mutex due to an unknown exception");
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return NULL;
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}
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}
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/* Free the mutex */
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extern "C"
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void
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SDL_DestroyMutex(SDL_mutex * mutex)
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{
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if (mutex) {
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try {
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delete mutex;
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} catch (...) {
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// catch any and all exceptions, just in case something happens
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}
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}
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}
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/* Lock the semaphore */
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extern "C"
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int
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SDL_mutexP(SDL_mutex * mutex)
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{
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SDL_threadID threadID = SDL_ThreadID();
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DWORD realThreadID = GetCurrentThreadId();
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if (mutex == NULL) {
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SDL_SetError("Passed a NULL mutex");
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return -1;
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}
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try {
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mutex->cpp_mutex.lock();
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return 0;
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} catch (std::exception & ex) {
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SDL_SetError("unable to lock C++ mutex: %s", ex.what());
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return -1;
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} catch (...) {
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SDL_SetError("unable to lock C++ mutex due to an unknown exception");
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return -1;
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}
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}
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/* Unlock the mutex */
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extern "C"
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int
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SDL_mutexV(SDL_mutex * mutex)
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{
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SDL_threadID threadID = SDL_ThreadID();
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DWORD realThreadID = GetCurrentThreadId();
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if (mutex == NULL) {
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SDL_SetError("Passed a NULL mutex");
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return -1;
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}
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try {
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mutex->cpp_mutex.unlock();
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return 0;
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} catch (...) {
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// catch any and all exceptions, just in case something happens.
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SDL_SetError("unable to unlock C++ mutex due to an unknown exception");
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return -1;
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}
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}
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/* vi: set ts=4 sw=4 expandtab: */
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