62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
// Copyright (c) 2016-2018 Easy2D - Nomango
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//
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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
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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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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//
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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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#pragma once
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#include "macros.h"
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namespace easy2d
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{
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class RefCounter
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{
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E2D_DISABLE_COPY(RefCounter);
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public:
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RefCounter() : ref_count_(0) {}
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virtual ~RefCounter() {}
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// 增加引用计数
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inline void Retain() { ::InterlockedIncrement(&ref_count_); }
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// 减少引用计数
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inline void Release()
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{
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if (::InterlockedDecrement(&ref_count_) <= 0)
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delete this;
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}
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// 获取引用计数
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inline long GetRefCount() const { return ref_count_; }
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private:
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long ref_count_;
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};
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inline void IntrusivePtrAddRef(RefCounter* ptr)
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{
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if (ptr) ptr->Retain();
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}
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inline void IntrusivePtrRelease(RefCounter* ptr)
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{
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if (ptr) ptr->Release();
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}
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}
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