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115 lines
4.0 KiB
C++
115 lines
4.0 KiB
C++
/**************************************************************************/
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/* mutex.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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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#ifndef MUTEX_H
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#define MUTEX_H
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#include "core/error/error_macros.h"
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#include "core/typedefs.h"
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#ifdef MINGW_ENABLED
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#define MINGW_STDTHREAD_REDUNDANCY_WARNING
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#include "thirdparty/mingw-std-threads/mingw.mutex.h"
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#define THREADING_NAMESPACE mingw_stdthread
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#else
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#include <mutex>
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#define THREADING_NAMESPACE std
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#endif
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#ifdef THREADS_ENABLED
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template <typename MutexT>
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class MutexLock;
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template <typename StdMutexT>
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class MutexImpl {
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friend class MutexLock<MutexImpl<StdMutexT>>;
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using StdMutexType = StdMutexT;
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mutable StdMutexT mutex;
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public:
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_ALWAYS_INLINE_ void lock() const {
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mutex.lock();
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}
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_ALWAYS_INLINE_ void unlock() const {
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mutex.unlock();
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}
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_ALWAYS_INLINE_ bool try_lock() const {
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return mutex.try_lock();
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}
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};
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template <typename MutexT>
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class MutexLock {
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friend class ConditionVariable;
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THREADING_NAMESPACE::unique_lock<typename MutexT::StdMutexType> lock;
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public:
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explicit MutexLock(const MutexT &p_mutex) :
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lock(p_mutex.mutex) {}
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};
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using Mutex = MutexImpl<THREADING_NAMESPACE::recursive_mutex>; // Recursive, for general use
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using BinaryMutex = MutexImpl<THREADING_NAMESPACE::mutex>; // Non-recursive, handle with care
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extern template class MutexImpl<THREADING_NAMESPACE::recursive_mutex>;
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extern template class MutexImpl<THREADING_NAMESPACE::mutex>;
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extern template class MutexLock<MutexImpl<THREADING_NAMESPACE::recursive_mutex>>;
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extern template class MutexLock<MutexImpl<THREADING_NAMESPACE::mutex>>;
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#else // No threads.
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class MutexImpl {
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mutable THREADING_NAMESPACE::mutex mutex;
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public:
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void lock() const {}
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void unlock() const {}
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bool try_lock() const { return true; }
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};
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template <typename MutexT>
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class MutexLock {
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public:
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MutexLock(const MutexT &p_mutex) {}
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};
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using Mutex = MutexImpl;
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using BinaryMutex = MutexImpl;
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#endif // THREADS_ENABLED
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#endif // MUTEX_H
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