1 /* 2 * Copyright (C) 2019 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 SRC_TRACED_PROBES_METATRACE_METATRACE_DATA_SOURCE_H_ 18 #define SRC_TRACED_PROBES_METATRACE_METATRACE_DATA_SOURCE_H_ 19 20 #include <memory> 21 22 #include "src/traced/probes/probes_data_source.h" 23 24 namespace perfetto { 25 26 class MetatraceWriter; 27 class TraceWriter; 28 29 namespace base { 30 class TaskRunner; 31 } 32 33 class MetatraceDataSource : public ProbesDataSource { 34 public: 35 static const ProbesDataSource::Descriptor descriptor; 36 37 MetatraceDataSource(base::TaskRunner*, 38 TracingSessionID, 39 std::unique_ptr<TraceWriter> writer); 40 41 ~MetatraceDataSource() override; 42 43 // ProbesDataSource implementation. 44 void Start() override; 45 void Flush(FlushRequestID, std::function<void()> callback) override; 46 47 private: 48 base::TaskRunner* const task_runner_; 49 std::unique_ptr<TraceWriter> trace_writer_; 50 std::unique_ptr<MetatraceWriter> metatrace_writer_; 51 }; 52 53 } // namespace perfetto 54 55 #endif // SRC_TRACED_PROBES_METATRACE_METATRACE_DATA_SOURCE_H_ 56