mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2025-02-08 22:20:05 +01:00
111 lines
2.5 KiB
C++
111 lines
2.5 KiB
C++
/*
|
|
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"
|
|
|
|
extern "C" {
|
|
#include "SDL_thread.h"
|
|
#include "SDL_systhread_c.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: */
|