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  #include <iostream>
24  
25  namespace OHOS {
26  namespace HiviewDFX {
27  class FaultLoggerPipe {
28  public:
29      FaultLoggerPipe();
30      ~FaultLoggerPipe();
31  
32      int GetReadFd(void);
33      int GetWriteFd(void);
34  
35      void Close(int fd) const;
36  private:
37      bool Init(void);
38      bool SetSize(long sz);
39      void Destroy(void);
40  
41      int fds_[2] = {-1, -1};
42      bool init_;
43      bool write_;
44  };
45  
46  class FaultLoggerPipe2 {
47  public:
48      explicit FaultLoggerPipe2(uint64_t time, bool isJson = false);
49      ~FaultLoggerPipe2();
50      std::unique_ptr<FaultLoggerPipe> faultLoggerPipeBuf_;
51      std::unique_ptr<FaultLoggerPipe> faultLoggerPipeRes_;
52      std::unique_ptr<FaultLoggerPipe> faultLoggerJsonPipeBuf_;
53      std::unique_ptr<FaultLoggerPipe> faultLoggerJsonPipeRes_;
54      uint64_t time_;
55  };
56  
57  class FaultLoggerPipeMap {
58  public:
59      FaultLoggerPipeMap();
60      ~FaultLoggerPipeMap();
61  
62      bool Check(int pid, uint64_t time);
63      void Set(int pid, uint64_t time, bool isJson = false);
64      FaultLoggerPipe2* Get(int pid);
65      void Del(int pid);
66  
67  private:
68      bool Find(int pid) const;
69  
70  private:
71      std::map<int, std::unique_ptr<FaultLoggerPipe2> > faultLoggerPipes_;
72      std::mutex pipeMapsMutex_;
73  };
74  } // namespace HiviewDFX
75  } // namespace OHOS
76  #endif
77