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_PRELUDE_TABLE_FUNCTIONS_EXPERIMENTAL_COUNTER_DUR_H_ 18 #define SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_EXPERIMENTAL_COUNTER_DUR_H_ 19 20 #include "src/trace_processor/prelude/table_functions/table_function.h" 21 #include "src/trace_processor/storage/trace_storage.h" 22 23 namespace perfetto { 24 namespace trace_processor { 25 26 class ExperimentalCounterDur : public TableFunction { 27 public: 28 using CounterTable = tables::CounterTable; 29 30 explicit ExperimentalCounterDur(const CounterTable& table); 31 virtual ~ExperimentalCounterDur() override; 32 33 Table::Schema CreateSchema() override; 34 std::string TableName() override; 35 uint32_t EstimateRowCount() override; 36 base::Status ValidateConstraints(const QueryConstraints&) override; 37 base::Status ComputeTable(const std::vector<Constraint>& cs, 38 const std::vector<Order>& ob, 39 const BitVector& cols_used, 40 std::unique_ptr<Table>& table_return) override; 41 42 // public + static for testing 43 static ColumnStorage<int64_t> ComputeDurColumn(const CounterTable& table); 44 static ColumnStorage<double> ComputeDeltaColumn(const CounterTable& table); 45 46 private: 47 const CounterTable* counter_table_ = nullptr; 48 std::unique_ptr<Table> counter_dur_table_; 49 }; 50 51 } // namespace trace_processor 52 } // namespace perfetto 53 54 #endif // SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_EXPERIMENTAL_COUNTER_DUR_H_ 55