| // Copyright 2019 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 SRC_DAWN_WIRE_CLIENT_OBJECTBASE_H_ |
| #define SRC_DAWN_WIRE_CLIENT_OBJECTBASE_H_ |
| |
| #include "dawn/webgpu.h" |
| |
| #include "dawn/common/LinkedList.h" |
| #include "dawn/wire/ObjectHandle.h" |
| |
| namespace dawn::wire::client { |
| |
| class Client; |
| |
| struct ObjectBaseParams { |
| Client* client; |
| ObjectHandle handle; |
| }; |
| |
| // All objects on the client side have: |
| // - A pointer to the Client to get where to serialize commands |
| // - The external reference count, starting at 1. |
| // - An ID that is used to refer to this object when talking with the server side |
| // - A next/prev pointer. They are part of a linked list of objects of the same type. |
| class ObjectBase : public LinkNode<ObjectBase> { |
| public: |
| explicit ObjectBase(const ObjectBaseParams& params); |
| virtual ~ObjectBase(); |
| |
| virtual void CancelCallbacksForDisconnect() {} |
| |
| const ObjectHandle& GetWireHandle() const; |
| ObjectId GetWireId() const; |
| ObjectGeneration GetWireGeneration() const; |
| Client* GetClient() const; |
| |
| void Reference(); |
| // Returns true if it was the last reference, indicating that the caller must destroy the |
| // object. |
| [[nodiscard]] bool Release(); |
| |
| protected: |
| uint32_t GetRefcount() const { return mRefcount; } |
| |
| private: |
| Client* const mClient; |
| const ObjectHandle mHandle; |
| uint32_t mRefcount; |
| }; |
| |
| } // namespace dawn::wire::client |
| |
| #endif // SRC_DAWN_WIRE_CLIENT_OBJECTBASE_H_ |