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 #include "src/trace_processor/instants_table.h" 18 19 #include <string> 20 21 #include "src/trace_processor/storage_columns.h" 22 23 namespace perfetto { 24 namespace trace_processor { 25 26 InstantsTable::InstantsTable(sqlite3*, const TraceStorage* storage) 27 : storage_(storage) {} 28 29 void InstantsTable::RegisterTable(sqlite3* db, const TraceStorage* storage) { 30 Table::Register<InstantsTable>(db, storage, "instants"); 31 } 32 33 StorageSchema InstantsTable::CreateStorageSchema() { 34 const auto& instants = storage_->instants(); 35 return StorageSchema::Builder() 36 .AddGenericNumericColumn("id", RowIdAccessor(TableId::kInstants)) 37 .AddOrderedNumericColumn("ts", &instants.timestamps()) 38 .AddStringColumn("name", &instants.name_ids(), &storage_->string_pool()) 39 .AddNumericColumn("value", &instants.values()) 40 .AddNumericColumn("ref", &instants.refs()) 41 .AddStringColumn("ref_type", &instants.types(), &GetRefTypeStringMap()) 42 .AddNumericColumn("arg_set_id", &instants.arg_set_ids()) 43 .Build({"name", "ts", "ref"}); 44 } 45 46 uint32_t InstantsTable::RowCount() { 47 return static_cast<uint32_t>(storage_->instants().instant_count()); 48 } 49 50 int InstantsTable::BestIndex(const QueryConstraints& qc, BestIndexInfo* info) { 51 info->estimated_cost = 52 static_cast<uint32_t>(storage_->instants().instant_count()); 53 54 // Only the string columns are handled by SQLite 55 info->order_by_consumed = true; 56 size_t name_index = schema().ColumnIndexFromName("name"); 57 size_t ref_type_index = schema().ColumnIndexFromName("ref_type"); 58 for (size_t i = 0; i < qc.constraints().size(); i++) { 59 info->omit[i] = 60 qc.constraints()[i].iColumn != static_cast<int>(name_index) && 61 qc.constraints()[i].iColumn != static_cast<int>(ref_type_index); 62 } 63 64 return SQLITE_OK; 65 } 66 } // namespace trace_processor 67 } // namespace perfetto 68
