1 /* 2 * Copyright (C) 2023 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 #ifndef SRC_TRACE_PROCESSOR_DB_STORAGE_H_ 17 #define SRC_TRACE_PROCESSOR_DB_STORAGE_H_ 18 19 #include <variant> 20 #include "perfetto/ext/base/status_or.h" 21 #include "src/trace_processor/db/column.h" 22 23 namespace perfetto { 24 namespace trace_processor { 25 namespace column { 26 27 // Most base column interpreting layer - responsible for implementing operations 28 // that require looking at the data, such as comparison or sorting. 29 class Storage { 30 public: 31 virtual ~Storage(); 32 33 // Changes the vector of indices to represent the sorted state of the column. 34 virtual void StableSort(uint32_t* rows, uint32_t rows_size) const = 0; 35 36 // Efficiently compares series of |num_elements| of data from |data_start| to 37 // comparator value and appends results to BitVector::Builder. Should be used 38 // on as much data as possible. 39 virtual void CompareFast(FilterOp op, 40 SqlValue value, 41 uint32_t offset, 42 uint32_t compare_elements_count, 43 BitVector::Builder&) const = 0; 44 45 // Inefficiently compares series of |num_elements| of data from |data_start| 46 // to comparator value and appends results to BitVector::Builder. Should be 47 // avoided if possible, with `FastSeriesComparison` used instead. 48 virtual void CompareSlow(FilterOp op, 49 SqlValue value, 50 uint32_t offset, 51 uint32_t compare_elements_count, 52 BitVector::Builder&) const = 0; 53 54 // Compares sorted (asc) series data with comparator value. Should be used 55 // where possible. 56 virtual void CompareSorted(FilterOp op, SqlValue value, RowMap&) const = 0; 57 58 // Compares sorted (asc) with `order` vector series with comparator value. 59 // Should be used where possible. 60 virtual void CompareSortedIndexes(FilterOp op, 61 SqlValue value, 62 uint32_t* order, 63 RowMap&) const = 0; 64 65 // Number of elements in stored data. 66 virtual uint32_t size() const = 0; 67 }; 68 69 } // namespace column 70 } // namespace trace_processor 71 } // namespace perfetto 72 #endif // SRC_TRACE_PROCESSOR_DB_STORAGE_H_ 73