// Copyright 2017 The Dawn Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #ifndef COMMON_REFCOUNTED_H_ #define COMMON_REFCOUNTED_H_ #include "common/RefBase.h" #include #include class RefCounted { public: RefCounted(uint64_t payload = 0); uint64_t GetRefCountForTesting() const; uint64_t GetRefCountPayload() const; void Reference(); void Release(); void APIReference(); void APIRelease(); protected: virtual ~RefCounted() = default; // A Derived class may override this if they require a custom deleter. virtual void DeleteThis(); private: std::atomic mRefCount; }; template struct RefCountedTraits { static constexpr T* kNullValue = nullptr; static void Reference(T* value) { value->Reference(); } static void Release(T* value) { value->Release(); } }; template class Ref : public RefBase> { public: using RefBase>::RefBase; }; template Ref AcquireRef(T* pointee) { Ref ref; ref.Acquire(pointee); return ref; } #endif // COMMON_REFCOUNTED_H_