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91 lines
2.5 KiB
91 lines
2.5 KiB
/****************************************************************************
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Copyright (c) 2021-2023 Xiamen Yaji Software Co., Ltd.
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http://www.cocos.com
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#pragma once
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#include <memory>
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namespace cc {
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template <class T, class LK>
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class UniqueLockedRef {
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public:
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UniqueLockedRef(T *t, LK *mtx) : _data(t), _mtx(mtx) {
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_mtx->lock();
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}
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UniqueLockedRef(UniqueLockedRef &&t) noexcept {
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_data = t._data;
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_mtx = t._mtx;
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t._data = nullptr;
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t._mtx = nullptr;
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}
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UniqueLockedRef &operator=(UniqueLockedRef &&t) noexcept {
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_data = t._data;
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_mtx = t._mtx;
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t._data = nullptr;
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t._mtx = nullptr;
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return *this;
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}
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UniqueLockedRef(const T &t) = delete;
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UniqueLockedRef &operator=(const UniqueLockedRef &) = delete;
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~UniqueLockedRef() {
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if (_mtx) {
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_mtx->unlock();
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}
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}
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T *operator->() {
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return _data;
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}
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T &operator*() {
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return *_data;
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}
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private:
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T *_data{};
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LK *_mtx{};
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};
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template <class T, class LK>
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class Locked {
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public:
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Locked() = default;
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Locked(const Locked &) = delete;
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Locked(Locked &&) = delete;
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Locked &operator=(const Locked &) = delete;
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Locked &operator=(Locked &&) = delete;
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UniqueLockedRef<T, LK> lock() {
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UniqueLockedRef<T, LK> ref(&_data, &_mutex);
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return std::move(ref);
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}
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private:
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LK _mutex{};
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T _data{};
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};
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} // namespace cc
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