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49 lines
2.1 KiB
C++
49 lines
2.1 KiB
C++
/****************************************************************************
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Copyright (c) 2020-2022 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 engine source code (the "Software"), a limited,
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worldwide, royalty-free, non-assignable, revocable and non-exclusive license
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to use Cocos Creator solely to develop games on your target platforms. You shall
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not use Cocos Creator software for developing other software or tools that's
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used for developing games. You are not granted to publish, distribute,
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sublicense, and/or sell copies of Cocos Creator.
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The software or tools in this License Agreement are licensed, not sold.
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Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.
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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 <atomic>
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#include <cstdint>
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namespace cc {
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template <typename T, typename = typename std::enable_if_t<std::is_integral<T>::value>>
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class ThreadSafeCounter final {
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public:
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inline T increment() noexcept { return add(1); }
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inline T add(T const v) noexcept { return _counter.fetch_add(v, std::memory_order_relaxed); }
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inline T decrement() noexcept { return subtract(1); }
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inline T subtract(T const v) noexcept { return _counter.fetch_sub(v, std::memory_order_relaxed); }
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inline void set(T const v) noexcept { _counter.store(v, std::memory_order_relaxed); }
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inline T get() const noexcept { return _counter.load(std::memory_order_relaxed); }
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inline void reset() noexcept { set(0); }
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private:
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std::atomic<T> _counter{0};
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};
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} // namespace cc
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