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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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54 lines
1.8 KiB
54 lines
1.8 KiB
6 years ago
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/*
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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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