1 /* 2 * Copyright (C) 2018 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_POWER_ANDROID_POWER_DATA_SOURCE_H_ 18 #define SRC_TRACED_PROBES_POWER_ANDROID_POWER_DATA_SOURCE_H_ 19 20 #include <bitset> 21 #include <memory> 22 23 #include "perfetto/ext/base/scoped_file.h" 24 #include "perfetto/ext/base/weak_ptr.h" 25 #include "perfetto/tracing/core/data_source_config.h" 26 #include "src/traced/probes/probes_data_source.h" 27 28 namespace perfetto { 29 30 class TraceWriter; 31 namespace base { 32 class TaskRunner; 33 } 34 35 class AndroidPowerDataSource : public ProbesDataSource { 36 public: 37 static const ProbesDataSource::Descriptor descriptor; 38 39 AndroidPowerDataSource(DataSourceConfig, 40 base::TaskRunner*, 41 TracingSessionID, 42 std::unique_ptr<TraceWriter> writer); 43 44 ~AndroidPowerDataSource() override; 45 46 base::WeakPtr<AndroidPowerDataSource> GetWeakPtr() const; 47 48 // ProbesDataSource implementation. 49 void Start() override; 50 void Flush(FlushRequestID, std::function<void()> callback) override; 51 void ClearIncrementalState() override; 52 53 private: 54 struct DynamicLibLoader; 55 56 void Tick(); 57 void WriteBatteryCounters(); 58 void WritePowerRailsData(); 59 void WriteEnergyEstimationBreakdown(); 60 void WriteEntityStateResidency(); 61 62 // Battery counters. 63 std::bitset<8> counters_enabled_; 64 65 // Power rails. 66 bool rails_collection_enabled_ = false; 67 68 // Energy estimation. 69 bool energy_breakdown_collection_enabled_ = false; 70 71 // Entity state residency 72 bool entity_state_residency_collection_enabled_ = false; 73 74 uint32_t poll_interval_ms_ = 0; 75 bool should_emit_descriptors_ = true; 76 77 base::TaskRunner* const task_runner_; 78 std::unique_ptr<TraceWriter> writer_; 79 std::unique_ptr<DynamicLibLoader> lib_; 80 base::WeakPtrFactory<AndroidPowerDataSource> weak_factory_; // Keep last. 81 }; 82 83 } // namespace perfetto 84 85 #endif // SRC_TRACED_PROBES_POWER_ANDROID_POWER_DATA_SOURCE_H_ 86