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_DESCENDANT_SLICE_GENERATOR_H_ 18 #define SRC_TRACE_PROCESSOR_DYNAMIC_DESCENDANT_SLICE_GENERATOR_H_ 19 20 #include "src/trace_processor/sqlite/db_sqlite_table.h" 21 22 #include "src/trace_processor/storage/trace_storage.h" 23 24 namespace perfetto { 25 namespace trace_processor { 26 27 class TraceProcessorContext; 28 29 // Dynamic table for implementing the table. 30 // See /docs/analysis.md for details about the functionality and usage of this 31 // table. 32 class DescendantSliceGenerator : public DbSqliteTable::DynamicTableGenerator { 33 public: 34 explicit DescendantSliceGenerator(TraceProcessorContext* context); 35 ~DescendantSliceGenerator() override; 36 37 Table::Schema CreateSchema() override; 38 std::string TableName() override; 39 uint32_t EstimateRowCount() override; 40 util::Status ValidateConstraints(const QueryConstraints&) override; 41 std::unique_ptr<Table> ComputeTable(const std::vector<Constraint>& cs, 42 const std::vector<Order>& ob) override; 43 44 private: 45 TraceProcessorContext* context_ = nullptr; 46 }; 47 48 } // namespace trace_processor 49 } // namespace perfetto 50 51 #endif // SRC_TRACE_PROCESSOR_DYNAMIC_DESCENDANT_SLICE_GENERATOR_H_ 52