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_SLICE_LAYOUT_GENERATOR_H_ 18 #define SRC_TRACE_PROCESSOR_DYNAMIC_EXPERIMENTAL_SLICE_LAYOUT_GENERATOR_H_ 19 20 #include <set> 21 22 #include "src/trace_processor/sqlite/db_sqlite_table.h" 23 #include "src/trace_processor/storage/trace_storage.h" 24 25 namespace perfetto { 26 namespace trace_processor { 27 28 class ExperimentalSliceLayoutGenerator 29 : public DbSqliteTable::DynamicTableGenerator { 30 public: 31 static constexpr uint32_t kFilterTrackIdsColumnIndex = 32 static_cast<uint32_t>(tables::SliceTable::ColumnIndex::arg_set_id) + 2; 33 34 ExperimentalSliceLayoutGenerator(StringPool* string_pool, 35 const tables::SliceTable* table); 36 virtual ~ExperimentalSliceLayoutGenerator() override; 37 38 Table::Schema CreateSchema() override; 39 std::string TableName() override; 40 uint32_t EstimateRowCount() override; 41 base::Status ValidateConstraints(const QueryConstraints&) override; 42 base::Status ComputeTable(const std::vector<Constraint>& cs, 43 const std::vector<Order>& ob, 44 const BitVector& cols_used, 45 std::unique_ptr<Table>& table_return) override; 46 47 private: 48 Table ComputeLayoutTable(const Table& table, StringPool::Id filter_id); 49 tables::SliceTable::Id InsertSlice( 50 std::map<tables::SliceTable::Id, tables::SliceTable::Id>& id_map, 51 tables::SliceTable::Id id, 52 base::Optional<tables::SliceTable::Id> parent_id); 53 54 // TODO(lalitm): remove this cache and move to having explicitly scoped 55 // lifetimes of dynamic tables. 56 std::unordered_map<StringId, Table> layout_table_cache_; 57 58 StringPool* string_pool_; 59 const tables::SliceTable* slice_table_; 60 const StringPool::Id empty_string_id_; 61 }; 62 63 } // namespace trace_processor 64 } // namespace perfetto 65 66 #endif // SRC_TRACE_PROCESSOR_DYNAMIC_EXPERIMENTAL_SLICE_LAYOUT_GENERATOR_H_ 67