1 /* 2 * Copyright (c) 2021-2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef FAULT_LOGGER_PIPE_H 17 #define FAULT_LOGGER_PIPE_H 18 19 #include <map> 20 #include <memory> 21 #include <mutex> 22 #include <string> 23 24 namespace OHOS { 25 namespace HiviewDFX { 26 class FaultLoggerPipe { 27 public: 28 FaultLoggerPipe(); 29 ~FaultLoggerPipe(); 30 31 int GetReadFd(void); 32 int GetWriteFd(void); 33 34 void Close(int fd) const; 35 private: 36 bool Init(void); 37 void Destroy(void); 38 39 int fds_[2] = {-1, -1}; 40 bool init_; 41 bool write_; 42 }; 43 44 class FaultLoggerPipe2 { 45 public: 46 explicit FaultLoggerPipe2(uint64_t time); 47 ~FaultLoggerPipe2(); 48 49 std::unique_ptr<FaultLoggerPipe> faultLoggerPipeBuf_; 50 std::unique_ptr<FaultLoggerPipe> faultLoggerPipeRes_; 51 uint64_t time_; 52 }; 53 54 class FaultLoggerPipeMap { 55 public: 56 FaultLoggerPipeMap(); 57 ~FaultLoggerPipeMap(); 58 59 bool Check(int pid, uint64_t time); 60 void Set(int pid, uint64_t time); 61 FaultLoggerPipe2* Get(int pid); 62 void Del(int pid); 63 64 private: 65 bool Find(int pid) const; 66 67 private: 68 std::map<int, std::unique_ptr<FaultLoggerPipe2> > faultLoggerPipes_; 69 std::mutex pipeMapsMutex_; 70 }; 71 } // namespace HiviewDFX 72 } // namespace OHOS 73 #endif 74