1 /* 2 * Copyright (C) 2022 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_TRACE_PROCESSOR_IMPORTERS_PROTO_ACTIVE_CHROME_PROCESSES_TRACKER_H_ 18 #define SRC_TRACE_PROCESSOR_IMPORTERS_PROTO_ACTIVE_CHROME_PROCESSES_TRACKER_H_ 19 20 #include <optional> 21 #include <set> 22 #include <vector> 23 24 #include "perfetto/ext/base/flat_hash_map.h" 25 #include "src/trace_processor/storage/trace_storage.h" 26 #include "src/trace_processor/types/trace_processor_context.h" 27 28 namespace perfetto { 29 namespace trace_processor { 30 31 struct ProcessWithDataLoss { 32 UniquePid upid; 33 // If not std::nullopt, the process data is reliable from this point until 34 // the end of the trace. 35 std::optional<int64_t> reliable_from; 36 }; 37 38 // Tracks ActiveProcesses metadata packets from ChromeTrackEvent, 39 // and process descriptors. 40 // Computes a list of processes with missing data based on this information. 41 class ActiveChromeProcessesTracker { 42 public: ActiveChromeProcessesTracker(TraceProcessorContext * context)43 explicit ActiveChromeProcessesTracker(TraceProcessorContext* context) 44 : context_(context) {} 45 46 void AddActiveProcessMetadata(int64_t timestamp, UniquePid upid); AddProcessDescriptor(int64_t timestamp,UniquePid upid)47 void AddProcessDescriptor(int64_t timestamp, UniquePid upid) { 48 process_data_[upid].descriptor_timestamps.insert(timestamp); 49 } 50 std::vector<ProcessWithDataLoss> GetProcessesWithDataLoss() const; 51 void NotifyEndOfFile(); 52 53 private: 54 struct ProcessData { 55 std::set<int64_t> metadata_timestamps; 56 std::set<int64_t> descriptor_timestamps; 57 }; 58 59 TraceProcessorContext* context_; 60 base::FlatHashMap<UniquePid, ProcessData> process_data_; 61 // Metadata timestamps across all processes. 62 std::set<int64_t> global_metadata_timestamps_; 63 }; 64 65 } // namespace trace_processor 66 } // namespace perfetto 67 68 #endif // SRC_TRACE_PROCESSOR_IMPORTERS_PROTO_ACTIVE_CHROME_PROCESSES_TRACKER_H_ 69