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_COMMON_CHUNKED_TRACE_READER_H_ 18 #define SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_CHUNKED_TRACE_READER_H_ 19 20 #include <stddef.h> 21 #include <stdint.h> 22 23 #include <memory> 24 25 #include "perfetto/trace_processor/basic_types.h" 26 #include "perfetto/trace_processor/status.h" 27 28 namespace perfetto { 29 namespace trace_processor { 30 31 class TraceBlobView; 32 33 // Base interface for first stage of parsing pipeline 34 // (JsonTraceParser, ProtoTraceReader). 35 class ChunkedTraceReader { 36 public: 37 virtual ~ChunkedTraceReader(); 38 39 // Pushes more data into the trace parser. There is no requirement for the 40 // caller to match line/protos boundaries. The parser class has to deal with 41 // intermediate buffering lines/protos that span across different chunks. 42 // The buffer size is guaranteed to be > 0. 43 virtual util::Status Parse(TraceBlobView) = 0; 44 45 // Called after the last Parse() call. 46 virtual void NotifyEndOfFile() = 0; 47 }; 48 49 } // namespace trace_processor 50 } // namespace perfetto 51 52 #endif // SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_CHUNKED_TRACE_READER_H_ 53