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 17 #ifndef SRC_TRACE_PROCESSOR_DB_COLUMN_SELECTOR_OVERLAY_H_ 18 #define SRC_TRACE_PROCESSOR_DB_COLUMN_SELECTOR_OVERLAY_H_ 19 20 #include <cstdint> 21 #include <memory> 22 #include <optional> 23 #include <string> 24 25 #include "perfetto/trace_processor/basic_types.h" 26 #include "src/trace_processor/containers/bit_vector.h" 27 #include "src/trace_processor/db/column/data_layer.h" 28 #include "src/trace_processor/db/column/types.h" 29 30 namespace perfetto::trace_processor::column { 31 32 // Storage which "selects" specific rows from an underlying storage using a 33 // BitVector. See ArrangementOverlay for a more generic class which allows 34 // duplication and rearragement but is less performant. 35 class SelectorOverlay final : public DataLayer { 36 public: 37 explicit SelectorOverlay(const BitVector*); 38 ~SelectorOverlay() override; 39 40 std::unique_ptr<DataLayerChain> MakeChain( 41 std::unique_ptr<DataLayerChain>, 42 ChainCreationArgs = ChainCreationArgs()); 43 44 private: 45 class ChainImpl : public DataLayerChain { 46 public: 47 ChainImpl(std::unique_ptr<DataLayerChain>, const BitVector*); 48 49 SingleSearchResult SingleSearch(FilterOp, 50 SqlValue, 51 uint32_t) const override; 52 53 SearchValidationResult ValidateSearchConstraints(FilterOp, 54 SqlValue) const override; 55 56 RangeOrBitVector SearchValidated(FilterOp, SqlValue, Range) const override; 57 58 void IndexSearchValidated(FilterOp p, SqlValue, Indices&) const override; 59 60 void StableSort(SortToken* start, 61 SortToken* end, 62 SortDirection) const override; 63 64 void Distinct(Indices&) const override; 65 66 std::optional<Token> MaxElement(Indices&) const override; 67 68 std::optional<Token> MinElement(Indices&) const override; 69 70 SqlValue Get_AvoidUsingBecauseSlow(uint32_t index) const override; 71 72 void Serialize(StorageProto*) const override; 73 size()74 uint32_t size() const override { return selector_->size(); } 75 DebugString()76 std::string DebugString() const override { return "SelectorOverlay"; } 77 78 private: 79 void TranslateToInnerIndices(Indices& indices) const; 80 std::unique_ptr<DataLayerChain> inner_ = nullptr; 81 const BitVector* selector_ = nullptr; 82 }; 83 84 const BitVector* selector_ = nullptr; 85 }; 86 87 } // namespace perfetto::trace_processor::column 88 89 #endif // SRC_TRACE_PROCESSOR_DB_COLUMN_SELECTOR_OVERLAY_H_ 90