| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| /* |
| * Implementation of the user-space ashmem API for devices, which have our |
| * ashmem-enabled kernel. See ashmem-sim.c for the "fake" tmp-based version, |
| * used by the simulator. |
| */ |
| |
| #ifndef IPCCOMMUNICATOR_H |
| #define IPCCOMMUNICATOR_H |
| #include <memory> |
| |
| class IPCResult; |
| class IPCArguments; |
| class IPCBuffer; |
| class IPCFutexPageQueue; |
| class IPCCommunicator { |
| protected: |
| explicit IPCCommunicator(IPCFutexPageQueue* futexPageQueue); |
| virtual ~IPCCommunicator(); |
| |
| std::unique_ptr<IPCResult> assembleResult(); |
| std::unique_ptr<IPCArguments> assembleArguments(); |
| std::unique_ptr<IPCBuffer> generateResultBuffer(IPCResult*); |
| void doSendBufferOnly(IPCBuffer* buffer); |
| uint32_t doReadPackage(); |
| const char* getBlob(); |
| void releaseBlob(); |
| |
| private: |
| void doSendBufferOnly(const void* data, size_t s); |
| size_t doSendBufferPage(const void* data, size_t s, size_t pageSize); |
| void doRecvBufferOnly(void* data, size_t s); |
| std::unique_ptr<char[]> m_package; |
| // weakref to a IPCFutexPageQueue object. |
| IPCFutexPageQueue* m_futexPageQueue; |
| }; |
| #endif /* IPCCOMMUNICATOR_H */ |