1 /* 2 * Copyright (c) 2021 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 * Description: StreamTransporter class define 16 */ 17 #ifndef RESULT_TRANSPORTER_H 18 #define RESULT_TRANSPORTER_H 19 #include <atomic> 20 #include <chrono> 21 #include <condition_variable> 22 #include <fcntl.h> 23 #include <iostream> 24 #include <memory> 25 #include <mutex> 26 #include <thread> 27 #include <vector> 28 29 #include "ftrace_namespace.h" 30 #include "plugin_module_api.h" 31 #include "trace_plugin_result.pb.h" 32 33 FTRACE_NS_BEGIN 34 using ResultPtr = std::unique_ptr<TracePluginResult>; 35 36 class ResultTransporter { 37 public: 38 using WriterStructPtr = std::unique_ptr<WriterStruct>::pointer; 39 ResultTransporter(const std::string& name, WriterStructPtr writer); 40 ~ResultTransporter(); 41 42 bool Submit(ResultPtr&& result); 43 void SetFlushInterval(int ms); 44 void SetFlushThreshold(uint32_t nbytes); 45 void Flush(); 46 47 protected: 48 long Write(ResultPtr&& packet); 49 50 private: 51 DISALLOW_COPY_AND_MOVE(ResultTransporter); 52 bool IsFlushTime() const; 53 54 std::string name_; 55 std::atomic<uint64_t> bytesCount_ = 0; 56 std::atomic<uint32_t> bytesPending_ = 0; 57 std::atomic<uint64_t> timeCostUs_ = 0; 58 std::atomic<uint32_t> writeCount_ = 0; 59 std::atomic<uint32_t> flushThreshold_ = 0; 60 std::chrono::milliseconds flushInterval_; 61 62 WriterStructPtr writer_ = nullptr; 63 std::vector<char> buffer_; 64 std::mutex mutex_; 65 }; 66 FTRACE_NS_END 67 #endif // RESULT_TRANSPORTER_H 68