71 lines
2.3 KiB
71 lines
2.3 KiB
/****************************************************************************
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Copyright (c) 2020-2023 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 <atomic>
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#include "base/Macros.h"
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#include "base/Ptr.h"
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namespace cc {
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namespace gfx {
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struct DefaultDeleter {
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template <typename T>
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void operator()(T *ptr) const {
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delete ptr;
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}
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};
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template <typename Deleter = DefaultDeleter>
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class GFXDeviceObject {
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public:
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virtual ~GFXDeviceObject() noexcept = default;
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void addRef() const noexcept {
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++_referenceCount;
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}
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void release() const noexcept {
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// atomic::operator _Ty uses load(memory_order_seq_cst), all threads observe all modifications in the same order.
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auto count = static_cast<int32_t>(--_referenceCount);
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CC_ASSERT_GE(count, 0);
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if (count == 0) {
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Deleter()(this);
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}
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}
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uint32_t getRefCount() const noexcept {
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return static_cast<uint32_t>(_referenceCount);
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}
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protected:
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GFXDeviceObject() noexcept = default;
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mutable std::atomic_uint32_t _referenceCount{0};
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};
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template <typename T>
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using ConstPtr = IntrusivePtr<const T>;
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} // namespace gfx
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} // namespace cc
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