1 /* 2 * Copyright (C) 2024 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_PERF_DSO_TRACKER_H_ 18 #define SRC_TRACE_PROCESSOR_IMPORTERS_PERF_DSO_TRACKER_H_ 19 20 #include <cstdint> 21 #include <string> 22 23 #include "perfetto/base/status.h" 24 #include "perfetto/ext/base/flat_hash_map.h" 25 #include "protos/third_party/simpleperf/record_file.pbzero.h" 26 #include "src/trace_processor/importers/common/address_range.h" 27 #include "src/trace_processor/storage/trace_storage.h" 28 #include "src/trace_processor/tables/profiler_tables_py.h" 29 #include "src/trace_processor/types/destructible.h" 30 #include "src/trace_processor/types/trace_processor_context.h" 31 32 namespace perfetto::trace_processor::perf_importer { 33 34 // Keeps track of DSO symbols to symbolize frames at the end of the trace 35 // parsing. 36 // TODO(b/334978369): We could potentially use this class (or a similar one) to 37 // process the ModuleSymbols proto packets and consolidate all symbolization in 38 // one place. 39 class DsoTracker : public Destructible { 40 public: GetOrCreate(TraceProcessorContext * context)41 static DsoTracker& GetOrCreate(TraceProcessorContext* context) { 42 if (!context->perf_dso_tracker) { 43 context->perf_dso_tracker.reset(new DsoTracker(context)); 44 } 45 return static_cast<DsoTracker&>(*context->perf_dso_tracker); 46 } 47 ~DsoTracker() override; 48 49 // Add symbol data contained in a `FileFeature` proto. 50 void AddSimpleperfFile2( 51 const third_party::simpleperf::proto::pbzero::FileFeature::Decoder& file); 52 53 // Tries to symbolize any `STACK_PROFILE_FRAME` frame missing the `name` 54 // attribute. This should be called at the end of parsing when all packets 55 // have been processed and all tables updated. 56 void SymbolizeFrames(); 57 58 private: 59 struct Dso { 60 uint64_t load_bias; 61 AddressRangeMap<std::string> symbols; 62 }; 63 64 explicit DsoTracker(TraceProcessorContext* context); 65 66 void SymbolizeKernelFrame(tables::StackProfileFrameTable::RowReference frame); 67 // Returns true it the frame was symbolized. 68 bool TrySymbolizeFrame(tables::StackProfileFrameTable::RowReference frame); 69 70 TraceProcessorContext* const context_; 71 const tables::StackProfileMappingTable& mapping_table_; 72 base::FlatHashMap<StringId, Dso> files_; 73 AddressRangeMap<std::string> kernel_symbols_; 74 }; 75 76 } // namespace perfetto::trace_processor::perf_importer 77 78 #endif // SRC_TRACE_PROCESSOR_IMPORTERS_PERF_DSO_TRACKER_H_ 79