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/*************************************************************************/
/* mutex_windows.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "mutex_windows.h"
#include "core/os/memory.h"
#ifdef WINDOWS_ENABLED
void MutexWindows::lock() {
#ifdef WINDOWS_USE_MUTEX
WaitForSingleObject(mutex, INFINITE);
#else
EnterCriticalSection(&mutex);
#endif
}
void MutexWindows::unlock() {
#ifdef WINDOWS_USE_MUTEX
ReleaseMutex(mutex);
#else
LeaveCriticalSection(&mutex);
#endif
}
Error MutexWindows::try_lock() {
#ifdef WINDOWS_USE_MUTEX
return (WaitForSingleObject(mutex, 0) == WAIT_TIMEOUT) ? ERR_BUSY : OK;
#else
if (TryEnterCriticalSection(&mutex))
return OK;
else
return ERR_BUSY;
#endif
}
Mutex *MutexWindows::create_func_windows(bool p_recursive) {
return memnew(MutexWindows);
}
void MutexWindows::make_default() {
create_func = create_func_windows;
}
MutexWindows::MutexWindows() {
#ifdef WINDOWS_USE_MUTEX
mutex = CreateMutex(NULL, FALSE, NULL);
#else
#ifdef UWP_ENABLED
InitializeCriticalSectionEx(&mutex, 0, 0);
#else
InitializeCriticalSection(&mutex);
#endif
#endif
}
MutexWindows::~MutexWindows() {
#ifdef WINDOWS_USE_MUTEX
CloseHandle(mutex);
#else
DeleteCriticalSection(&mutex);
#endif
}
#endif
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