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 INCLUDE_PERFETTO_EXT_TRACE_PROCESSOR_EXPORT_JSON_H_ 18 #define INCLUDE_PERFETTO_EXT_TRACE_PROCESSOR_EXPORT_JSON_H_ 19 20 #include <stdio.h> 21 22 #include <functional> 23 24 #include "perfetto/base/export.h" 25 #include "perfetto/trace_processor/status.h" 26 27 namespace perfetto { 28 namespace trace_processor { 29 30 class TraceProcessorStorage; 31 32 namespace json { 33 34 using ArgumentNameFilterPredicate = std::function<bool(const char* arg_name)>; 35 using ArgumentFilterPredicate = 36 std::function<bool(const char* category_group_name, 37 const char* event_name, 38 ArgumentNameFilterPredicate*)>; 39 using MetadataFilterPredicate = std::function<bool(const char* metadata_name)>; 40 using LabelFilterPredicate = std::function<bool(const char* label_name)>; 41 42 class PERFETTO_EXPORT OutputWriter { 43 public: 44 OutputWriter(); 45 virtual ~OutputWriter(); 46 47 virtual util::Status AppendString(const std::string&) = 0; 48 }; 49 50 // Public for Chrome. Exports the trace loaded in TraceProcessorStorage to json, 51 // applying argument, metadata and label filtering using the callbacks. 52 util::Status PERFETTO_EXPORT ExportJson(TraceProcessorStorage*, 53 OutputWriter*, 54 ArgumentFilterPredicate = nullptr, 55 MetadataFilterPredicate = nullptr, 56 LabelFilterPredicate = nullptr); 57 58 } // namespace json 59 } // namespace trace_processor 60 } // namespace perfetto 61 62 #endif // INCLUDE_PERFETTO_EXT_TRACE_PROCESSOR_EXPORT_JSON_H_ 63