1 /* 2 * Copyright (C) 2021 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_PRELUDE_TABLE_FUNCTIONS_EXPERIMENTAL_ANNOTATED_STACK_H_ 18 #define SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_EXPERIMENTAL_ANNOTATED_STACK_H_ 19 20 #include "src/trace_processor/prelude/table_functions/table_function.h" 21 22 namespace perfetto { 23 namespace trace_processor { 24 25 class TraceProcessorContext; 26 27 // The "experimental_annotated_callstack" dynamic table. 28 // 29 // Given a leaf callsite id, returns the full callstack (including the leaf), 30 // with optional (currently Android-specific) annotations. A given callsite will 31 // always have the same annotation. 32 class ExperimentalAnnotatedStack : public TableFunction { 33 public: ExperimentalAnnotatedStack(TraceProcessorContext * context)34 explicit ExperimentalAnnotatedStack(TraceProcessorContext* context) 35 : context_(context) {} 36 37 Table::Schema CreateSchema() override; 38 std::string TableName() override; 39 uint32_t EstimateRowCount() override; 40 base::Status ValidateConstraints(const QueryConstraints&) override; 41 base::Status ComputeTable(const std::vector<Constraint>& cs, 42 const std::vector<Order>& ob, 43 const BitVector& cols_used, 44 std::unique_ptr<Table>& table_return) override; 45 46 private: 47 TraceProcessorContext* context_ = nullptr; 48 }; 49 50 } // namespace trace_processor 51 } // namespace perfetto 52 53 #endif // SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_EXPERIMENTAL_ANNOTATED_STACK_H_ 54