1 /*
<lambda>null2 * 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 package android.tools.traces.parsers.perfetto
18
19 fun queryRealToMonotonicTimeOffsetNs(session: TraceProcessorSession, tableName: String): Long {
20 val elapsed = queryLastEntryTimestamp(session, tableName)
21 if (elapsed == null) {
22 return 0L
23 }
24 val monotonic = queryToMonotonic(session, elapsed)
25 val real = queryToRealtime(session, elapsed)
26 return real - monotonic
27 }
28
queryLastEntryTimestampnull29 fun queryLastEntryTimestamp(session: TraceProcessorSession, tableName: String): Long? {
30 val sql =
31 """
32 SELECT
33 ts
34 FROM $tableName
35 WHERE
36 id = ( SELECT MAX(id) FROM $tableName );
37 """
38 .trimIndent()
39 val value =
40 session.query(sql) { rows ->
41 if (rows.size == 1) {
42 rows.get(0).get("ts") as Long
43 } else {
44 null
45 }
46 }
47 return value
48 }
49
queryToMonotonicnull50 fun queryToMonotonic(session: TraceProcessorSession, elapsedTimestamp: Long): Long {
51 val sql = "SELECT TO_MONOTONIC($elapsedTimestamp) as ts;"
52 val value =
53 session.query(sql) { rows ->
54 require(rows.size == 1)
55 rows.get(0).get("ts") as Long
56 }
57 return value
58 }
59
queryToRealtimenull60 fun queryToRealtime(session: TraceProcessorSession, elapsedTimestamp: Long): Long {
61 val sql = "SELECT TO_REALTIME($elapsedTimestamp) as ts;"
62 val value =
63 session.query(sql) { rows ->
64 require(rows.size == 1)
65 rows.get(0).get("ts") as Long
66 }
67 return value
68 }
69