1 /* 2 * Copyright (C) 2018 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_THREAD_TABLE_H_ 18 #define SRC_TRACE_PROCESSOR_THREAD_TABLE_H_ 19 20 #include <limits> 21 #include <memory> 22 23 #include "src/trace_processor/table.h" 24 #include "src/trace_processor/trace_storage.h" 25 26 namespace perfetto { 27 namespace trace_processor { 28 29 // The implementation of the SQLite table containing each unique process with 30 // the metadata for those processes. 31 class ThreadTable : public Table { 32 public: 33 enum Column { kUtid = 0, kUpid = 1, kName = 2, kTid = 3, kStartTs = 4 }; 34 class Cursor : public Table::Cursor { 35 public: 36 Cursor(ThreadTable* table); 37 38 // Implementation of Table::Cursor. 39 int Filter(const QueryConstraints&, sqlite3_value**) override; 40 int Next() override; 41 int Eof() override; 42 int Column(sqlite3_context*, int N) override; 43 44 private: 45 Cursor(Cursor&) = delete; 46 Cursor& operator=(const Cursor&) = delete; 47 48 Cursor(Cursor&&) noexcept = default; 49 Cursor& operator=(Cursor&&) = default; 50 51 UniqueTid min; 52 UniqueTid max; 53 UniqueTid current; 54 bool desc; 55 56 const TraceStorage* storage_ = nullptr; 57 ThreadTable* table_ = nullptr; 58 }; 59 60 static void RegisterTable(sqlite3* db, const TraceStorage* storage); 61 62 ThreadTable(sqlite3*, const TraceStorage*); 63 64 // Table implementation. 65 base::Optional<Table::Schema> Init(int, const char* const*) override; 66 std::unique_ptr<Table::Cursor> CreateCursor() override; 67 int BestIndex(const QueryConstraints&, BestIndexInfo*) override; 68 69 private: 70 const TraceStorage* const storage_; 71 }; 72 } // namespace trace_processor 73 } // namespace perfetto 74 75 #endif // SRC_TRACE_PROCESSOR_THREAD_TABLE_H_ 76
