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_PERFETTO_SQL_INTRINSICS_TABLE_FUNCTIONS_EXPERIMENTAL_COUNTER_DUR_H_
18 #define SRC_TRACE_PROCESSOR_PERFETTO_SQL_INTRINSICS_TABLE_FUNCTIONS_EXPERIMENTAL_COUNTER_DUR_H_
19 
20 #include <cstdint>
21 #include <memory>
22 #include <string>
23 #include <vector>
24 
25 #include "perfetto/ext/base/status_or.h"
26 #include "perfetto/trace_processor/basic_types.h"
27 #include "src/trace_processor/db/column_storage.h"
28 #include "src/trace_processor/db/table.h"
29 #include "src/trace_processor/perfetto_sql/intrinsics/table_functions/static_table_function.h"
30 #include "src/trace_processor/tables/counter_tables_py.h"
31 
32 namespace perfetto::trace_processor {
33 
34 class ExperimentalCounterDur : public StaticTableFunction {
35  public:
36   using CounterTable = tables::CounterTable;
37 
38   explicit ExperimentalCounterDur(const CounterTable& table);
39   virtual ~ExperimentalCounterDur() override;
40 
41   Table::Schema CreateSchema() override;
42   std::string TableName() override;
43   uint32_t EstimateRowCount() override;
44   base::StatusOr<std::unique_ptr<Table>> ComputeTable(
45       const std::vector<SqlValue>& arguments) override;
46 
47   // public + static for testing
48   static ColumnStorage<int64_t> ComputeDurColumn(const CounterTable& table);
49   static ColumnStorage<double> ComputeDeltaColumn(const CounterTable& table);
50 
51  private:
52   const CounterTable* counter_table_ = nullptr;
53   std::unique_ptr<Table> counter_dur_table_;
54 };
55 
56 }  // namespace perfetto::trace_processor
57 
58 #endif  // SRC_TRACE_PROCESSOR_PERFETTO_SQL_INTRINSICS_TABLE_FUNCTIONS_EXPERIMENTAL_COUNTER_DUR_H_
59