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_TRACE_PROCESSOR_IMPORTERS_PROTO_PROTO_TRACE_READER_H_ 18 #define SRC_TRACE_PROCESSOR_IMPORTERS_PROTO_PROTO_TRACE_READER_H_ 19 20 #include <stdint.h> 21 22 #include <memory> 23 24 #include "src/trace_processor/importers/common/chunked_trace_reader.h" 25 #include "src/trace_processor/importers/common/trace_blob_view.h" 26 #include "src/trace_processor/importers/proto/proto_incremental_state.h" 27 #include "src/trace_processor/importers/proto/proto_trace_tokenizer.h" 28 29 namespace protozero { 30 struct ConstBytes; 31 } 32 33 namespace perfetto { 34 35 namespace protos { 36 namespace pbzero { 37 class TracePacket_Decoder; 38 class TraceConfig_Decoder; 39 } // namespace pbzero 40 } // namespace protos 41 42 namespace trace_processor { 43 44 class PacketSequenceState; 45 class TraceProcessorContext; 46 class TraceSorter; 47 class TraceStorage; 48 49 // Implementation of ChunkedTraceReader for proto traces. Tokenizes a proto 50 // trace into packets, handles parsing of any packets which need to be 51 // handled in trace-order and passes the remainder to TraceSorter to sort 52 // into timestamp order. 53 class ProtoTraceReader : public ChunkedTraceReader { 54 public: 55 // |reader| is the abstract method of getting chunks of size |chunk_size_b| 56 // from a trace file with these chunks parsed into |trace|. 57 explicit ProtoTraceReader(TraceProcessorContext*); 58 ~ProtoTraceReader() override; 59 60 // ChunkedTraceReader implementation. 61 util::Status Parse(std::unique_ptr<uint8_t[]>, size_t size) override; 62 void NotifyEndOfFile() override; 63 64 private: 65 using ConstBytes = protozero::ConstBytes; 66 util::Status ParsePacket(TraceBlobView); 67 util::Status ParseServiceEvent(int64_t ts, ConstBytes); 68 util::Status ParseClockSnapshot(ConstBytes blob, uint32_t seq_id); 69 void HandleIncrementalStateCleared( 70 const protos::pbzero::TracePacket_Decoder&); 71 void HandlePreviousPacketDropped(const protos::pbzero::TracePacket_Decoder&); 72 void ParseTracePacketDefaults(const protos::pbzero::TracePacket_Decoder&, 73 TraceBlobView trace_packet_defaults); 74 void ParseInternedData(const protos::pbzero::TracePacket_Decoder&, 75 TraceBlobView interned_data); 76 void ParseTraceConfig(ConstBytes); 77 78 base::Optional<StringId> GetBuiltinClockNameOrNull(uint64_t clock_id); 79 GetIncrementalStateForPacketSequence(uint32_t sequence_id)80 PacketSequenceState* GetIncrementalStateForPacketSequence( 81 uint32_t sequence_id) { 82 if (!incremental_state) 83 incremental_state.reset(new ProtoIncrementalState(context_)); 84 return incremental_state->GetOrCreateStateForPacketSequence(sequence_id); 85 } 86 util::Status ParseExtensionDescriptor(ConstBytes descriptor); 87 88 TraceProcessorContext* context_; 89 90 ProtoTraceTokenizer tokenizer_; 91 92 // Temporary. Currently trace packets do not have a timestamp, so the 93 // timestamp given is latest_timestamp_. 94 int64_t latest_timestamp_ = 0; 95 96 // Stores incremental state and references to interned data, e.g. for track 97 // event protos. 98 std::unique_ptr<ProtoIncrementalState> incremental_state; 99 }; 100 101 } // namespace trace_processor 102 } // namespace perfetto 103 104 #endif // SRC_TRACE_PROCESSOR_IMPORTERS_PROTO_PROTO_TRACE_READER_H_ 105