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_TRACE_PROCESSOR_IMPORTERS_PROTO_PROTO_INCREMENTAL_STATE_H_ 18 #define SRC_TRACE_PROCESSOR_IMPORTERS_PROTO_PROTO_INCREMENTAL_STATE_H_ 19 20 #include <stdint.h> 21 22 #include <map> 23 24 #include "src/trace_processor/importers/proto/packet_sequence_state.h" 25 26 namespace perfetto { 27 namespace trace_processor { 28 29 class TraceProcessorContext; 30 31 // Stores per-packet-sequence incremental state during trace parsing, such as 32 // reference timestamps for delta timestamp calculation and interned messages. 33 class ProtoIncrementalState { 34 public: ProtoIncrementalState(TraceProcessorContext * context)35 ProtoIncrementalState(TraceProcessorContext* context) : context_(context) {} 36 37 // Returns the PacketSequenceState for the packet sequence with the given id. 38 // If this is a new sequence which we haven't tracked before, initializes and 39 // inserts a new PacketSequenceState into the state map. GetOrCreateStateForPacketSequence(uint32_t sequence_id)40 PacketSequenceState* GetOrCreateStateForPacketSequence(uint32_t sequence_id) { 41 auto& ptr = packet_sequence_states_[sequence_id]; 42 if (!ptr) 43 ptr.reset(new PacketSequenceState(context_)); 44 return ptr.get(); 45 } 46 47 private: 48 // Stores unique_ptrs to ensure that pointers to a PacketSequenceState remain 49 // valid even if the map rehashes. 50 std::map<uint32_t, std::unique_ptr<PacketSequenceState>> 51 packet_sequence_states_; 52 53 TraceProcessorContext* context_; 54 }; 55 56 } // namespace trace_processor 57 } // namespace perfetto 58 59 #endif // SRC_TRACE_PROCESSOR_IMPORTERS_PROTO_PROTO_INCREMENTAL_STATE_H_ 60