1 /*
2 * Copyright (C) 2019 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/android_logs_table.h"
18
19 namespace perfetto {
20 namespace trace_processor {
21
AndroidLogsTable(sqlite3 *,const TraceStorage * storage)22 AndroidLogsTable::AndroidLogsTable(sqlite3*, const TraceStorage* storage)
23 : storage_(storage) {}
24
RegisterTable(sqlite3 * db,const TraceStorage * storage)25 void AndroidLogsTable::RegisterTable(sqlite3* db, const TraceStorage* storage) {
26 Table::Register<AndroidLogsTable>(db, storage, "android_logs");
27 }
28
CreateStorageSchema()29 StorageSchema AndroidLogsTable::CreateStorageSchema() {
30 const auto& alog = storage_->android_logs();
31 // Note: the logs in the storage are NOT sorted by timestamp. We delegate
32 // that to the on-demand sorter by calling AddNumericColumn (instead of
33 // AddSortedNumericColumn).
34 return StorageSchema::Builder()
35 .AddNumericColumn("ts", &alog.timestamps())
36 .AddNumericColumn("utid", &alog.utids())
37 .AddNumericColumn("prio", &alog.prios())
38 .AddStringColumn("tag", &alog.tag_ids(), &storage_->string_pool())
39 .AddStringColumn("msg", &alog.msg_ids(), &storage_->string_pool())
40 .Build({"ts", "utid", "msg"});
41 }
42
RowCount()43 uint32_t AndroidLogsTable::RowCount() {
44 return static_cast<uint32_t>(storage_->android_logs().size());
45 }
46
BestIndex(const QueryConstraints & qc,BestIndexInfo * info)47 int AndroidLogsTable::BestIndex(const QueryConstraints& qc,
48 BestIndexInfo* info) {
49 info->estimated_cost = static_cast<uint32_t>(storage_->android_logs().size());
50
51 info->order_by_consumed = true;
52
53 // Only the string columns are handled by SQLite.
54 size_t tag_index = schema().ColumnIndexFromName("tag");
55 size_t msg_index = schema().ColumnIndexFromName("msg");
56 for (size_t i = 0; i < qc.constraints().size(); i++) {
57 info->omit[i] =
58 qc.constraints()[i].iColumn != static_cast<int>(tag_index) &&
59 qc.constraints()[i].iColumn != static_cast<int>(msg_index);
60 }
61
62 return SQLITE_OK;
63 }
64 } // namespace trace_processor
65 } // namespace perfetto
66