100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
/*************************************************************************/
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/* mutex_windows.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "mutex_windows.h"
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#include "os/memory.h"
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#ifdef WINDOWS_ENABLED
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void MutexWindows::lock() {
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#ifdef WINDOWS_USE_MUTEX
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WaitForSingleObject(mutex, INFINITE);
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#else
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EnterCriticalSection(&mutex);
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#endif
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}
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void MutexWindows::unlock() {
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#ifdef WINDOWS_USE_MUTEX
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ReleaseMutex(mutex);
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#else
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LeaveCriticalSection(&mutex);
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#endif
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}
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Error MutexWindows::try_lock() {
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#ifdef WINDOWS_USE_MUTEX
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return (WaitForSingleObject(mutex, 0) == WAIT_TIMEOUT) ? ERR_BUSY : OK;
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#else
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if (TryEnterCriticalSection(&mutex))
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return OK;
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else
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return ERR_BUSY;
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#endif
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}
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Mutex *MutexWindows::create_func_windows(bool p_recursive) {
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return memnew(MutexWindows);
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}
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void MutexWindows::make_default() {
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create_func = create_func_windows;
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}
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MutexWindows::MutexWindows() {
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#ifdef WINDOWS_USE_MUTEX
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mutex = CreateMutex(NULL, FALSE, NULL);
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#else
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#ifdef UWP_ENABLED
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InitializeCriticalSectionEx(&mutex, 0, 0);
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#else
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InitializeCriticalSection(&mutex);
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#endif
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#endif
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}
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MutexWindows::~MutexWindows() {
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#ifdef WINDOWS_USE_MUTEX
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CloseHandle(mutex);
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#else
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DeleteCriticalSection(&mutex);
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#endif
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}
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#endif
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