Eric Seckler | 771960c | 2019-10-22 15:37:12 +0100 | [diff] [blame] | 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: |
| 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. |
| 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_ |