1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef FRAMEWORKS_NATIVE_CMDS_LSHAL_PIPE_RELAY_H_ 18 19 #define FRAMEWORKS_NATIVE_CMDS_LSHAL_PIPE_RELAY_H_ 20 21 #include <android-base/macros.h> 22 #include <ostream> 23 #include <utils/Errors.h> 24 #include <utils/RefBase.h> 25 26 namespace android { 27 namespace lshal { 28 29 /* Creates an AF_UNIX socketpair and spawns a thread that relays any data 30 * written to the "write"-end of the pair to the specified output stream "os". 31 */ 32 struct PipeRelay { 33 explicit PipeRelay(std::ostream &os); 34 ~PipeRelay(); 35 36 status_t initCheck() const; 37 38 // Returns the file descriptor corresponding to the "write"-end of the 39 // connection. 40 int fd() const; 41 42 private: 43 struct RelayThread; 44 45 status_t mInitCheck; 46 int mFds[2]; 47 sp<RelayThread> mThread; 48 49 static void CloseFd(int *fd); 50 51 DISALLOW_COPY_AND_ASSIGN(PipeRelay); 52 }; 53 54 } // namespace lshal 55 } // namespace android 56 57 #endif // FRAMEWORKS_NATIVE_CMDS_LSHAL_PIPE_RELAY_H_ 58 59
