1 /* 2 * Copyright (C) 2020 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_DYNAMIC_ANCESTOR_GENERATOR_H_ 18 #define SRC_TRACE_PROCESSOR_DYNAMIC_ANCESTOR_GENERATOR_H_ 19 20 #include "src/trace_processor/sqlite/db_sqlite_table.h" 21 22 #include "perfetto/ext/base/optional.h" 23 #include "src/trace_processor/storage/trace_storage.h" 24 25 namespace perfetto { 26 namespace trace_processor { 27 28 class TraceProcessorContext; 29 30 // Implements the following dynamic tables: 31 // * ancestor_slice 32 // * experimental_ancestor_stack_profile_callsite 33 // * ancestor_slice_by_stack 34 // 35 // See docs/analysis/trace-processor for usage. 36 class AncestorGenerator : public DbSqliteTable::DynamicTableGenerator { 37 public: 38 enum class Ancestor { 39 kSlice = 1, 40 kStackProfileCallsite = 2, 41 kSliceByStack = 3 42 }; 43 44 AncestorGenerator(Ancestor type, TraceProcessorContext* context); 45 46 Table::Schema CreateSchema() override; 47 std::string TableName() override; 48 uint32_t EstimateRowCount() override; 49 base::Status ValidateConstraints(const QueryConstraints&) override; 50 base::Status ComputeTable(const std::vector<Constraint>& cs, 51 const std::vector<Order>& ob, 52 const BitVector& cols_used, 53 std::unique_ptr<Table>& table_return) override; 54 55 // Returns a RowMap of slice IDs which are ancestors of |slice_id|. Returns 56 // NULL if an invalid |slice_id| is given. This is used by 57 // ConnectedFlowGenerator to traverse flow indirectly connected flow events. 58 static base::Optional<RowMap> GetAncestorSlices( 59 const tables::SliceTable& slices, 60 SliceId slice_id); 61 62 private: 63 Ancestor type_; 64 TraceProcessorContext* context_ = nullptr; 65 }; 66 67 } // namespace trace_processor 68 } // namespace perfetto 69 70 #endif // SRC_TRACE_PROCESSOR_DYNAMIC_ANCESTOR_GENERATOR_H_ 71