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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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53 lines
1.8 KiB
53 lines
1.8 KiB
/* |
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* |
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* Copyright 2019 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#ifndef GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H_ |
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#define GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H_ |
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namespace grpc { |
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// This is per rpc struct for the allocator. We can potentially put the grpc |
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// call arena in here in the future. |
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template <typename RequestT, typename ResponseT> |
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struct RpcAllocatorInfo { |
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RequestT* request = nullptr; |
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ResponseT* response = nullptr; |
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// per rpc allocator internal state. MessageAllocator can set it when |
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// AllocateMessages is called and use it later. |
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void* allocator_state = nullptr; |
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}; |
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// Implementations need to be thread-safe |
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template <typename RequestT, typename ResponseT> |
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class MessageAllocator { |
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public: |
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virtual ~MessageAllocator() = default; |
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// Allocate both request and response |
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virtual void AllocateMessages( |
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RpcAllocatorInfo<RequestT, ResponseT>* info) = 0; |
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// Optional: deallocate request early, called by |
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// ServerCallbackRpcController::ReleaseRequest |
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virtual void DeallocateRequest(RpcAllocatorInfo<RequestT, ResponseT>* info) {} |
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// Deallocate response and request (if applicable) |
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virtual void DeallocateMessages( |
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RpcAllocatorInfo<RequestT, ResponseT>* info) = 0; |
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}; |
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} // namespace grpc |
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#endif // GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H_
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