1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef SRC_THREAD_TABLE_H 17 #define SRC_THREAD_TABLE_H 18 19 #include "table_base.h" 20 #include "trace_data_cache.h" 21 22 namespace SysTuning { 23 namespace TraceStreamer { 24 class ThreadTable : public TableBase { 25 public: 26 explicit ThreadTable(const TraceDataCache* dataCache); 27 ~ThreadTable() override; 28 std::unique_ptr<TableBase::Cursor> CreateCursor() override; 29 30 private: 31 void EstimateFilterCost(FilterConstraints& fc, EstimatedIndexInfo& ei) override; 32 // filter out by operator[=, >, <...] from column(ID) 33 bool CanFilterId(const char op, size_t& rowCount); 34 int Update(int argc, sqlite3_value** argv, sqlite3_int64* pRowid) override; 35 void FilterByConstraint(FilterConstraints& fc, double& filterCost, size_t rowCount); 36 37 class Cursor : public TableBase::Cursor { 38 public: 39 explicit Cursor(const TraceDataCache* dataCache, TableBase* table); 40 ~Cursor() override; 41 void FilterIpid(unsigned char op, uint64_t value); 42 void FilterTid(unsigned char op, uint64_t value); 43 void FilterSwitchCount(unsigned char op, uint64_t value); 44 void FilterIndex(int col, unsigned char op, sqlite3_value* argv); 45 int Filter(const FilterConstraints& fc, sqlite3_value** argv) override; 46 int Column(int col) const override; 47 48 void FilterId(unsigned char op, sqlite3_value* argv) override; 49 private: 50 std::vector<TableRowId> rowIndexBak_; 51 IndexMap* indexMapBack_ = nullptr; 52 }; 53 }; 54 } // namespace TraceStreamer 55 } // namespace SysTuning 56 57 #endif // SRC_THREAD_TABLE_H 58