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_EXPERIMENTAL_COUNTER_DUR_GENERATOR_H_
18 #define SRC_TRACE_PROCESSOR_DYNAMIC_EXPERIMENTAL_COUNTER_DUR_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 ExperimentalCounterDurGenerator
28     : public DbSqliteTable::DynamicTableGenerator {
29  public:
30   explicit ExperimentalCounterDurGenerator(const tables::CounterTable& table);
31   virtual ~ExperimentalCounterDurGenerator() override;
32 
33   Table::Schema CreateSchema() override;
34   std::string TableName() override;
35   uint32_t EstimateRowCount() override;
36   util::Status ValidateConstraints(const QueryConstraints&) override;
37   std::unique_ptr<Table> ComputeTable(const std::vector<Constraint>&,
38                                       const std::vector<Order>&) override;
39 
40   // public + static for testing
41   static NullableVector<int64_t> ComputeDurColumn(const Table& table);
42   static NullableVector<double> ComputeDeltaColumn(const Table& table);
43 
44  private:
45   const tables::CounterTable* counter_table_ = nullptr;
46   std::unique_ptr<NullableVector<int64_t>> dur_column_;
47   std::unique_ptr<NullableVector<double>> delta_column_;
48 };
49 
50 }  // namespace trace_processor
51 }  // namespace perfetto
52 
53 #endif  // SRC_TRACE_PROCESSOR_DYNAMIC_EXPERIMENTAL_COUNTER_DUR_GENERATOR_H_
54