1 /* 2 * Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved. 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 HIDUMP_PLUGIN_H 17 #define HIDUMP_PLUGIN_H 18 19 #include "logging.h" 20 #include "plugin_module_api.h" 21 #include "hidump_plugin_config.pb.h" 22 #include "hidump_plugin_result.pb.h" 23 24 #include <atomic> 25 #include <mutex> 26 #include <thread> 27 #include <vector> 28 29 #include <unistd.h> 30 #include <sys/wait.h> 31 #include <csignal> 32 33 class HidumpPlugin { 34 public: 35 HidumpPlugin(); 36 ~HidumpPlugin(); 37 int Start(const uint8_t* configData, uint32_t configSize); 38 int Stop(); 39 40 int SetWriter(WriterStruct* writer); 41 void Loop(void); IsDataReady()42 bool IsDataReady() 43 { 44 return dataReady_.load(); 45 } 46 47 private: 48 // for ut 49 void SetConfig(HidumpConfig& config); 50 int SetTestCmd(const char *test_cmd); 51 std::string GetCmdArgs(const HidumpConfig& protoConfig); 52 const char *GetTestCmd(); 53 char *testCmd_ = nullptr; 54 private: 55 template <typename T> 56 bool ParseHidumpInfo(T& hidumpInfoProto, char *buf, size_t len); 57 58 HidumpConfig protoConfig_; 59 std::vector<char> buffer_; 60 WriterStruct* resultWriter_ = nullptr; 61 std::mutex mutex_; 62 std::thread writeThread_; 63 std::atomic<bool> running_ = true; 64 std::atomic<bool> dataReady_ = false; 65 std::unique_ptr<FILE, std::function<int (FILE*)>> fp_; 66 volatile pid_t childPid_ = -1; 67 int pipeFds_[2] = {-1, -1}; // 2: pipe fds 68 }; 69 70 #endif // HIDUMP_PLUGIN_H