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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.loganalysis.parser;
import com.android.loganalysis.item.WakelockItem;
import com.android.loganalysis.item.WakelockItem.WakeLockCategory;
import com.android.loganalysis.util.NumberFormattingUtil;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* A {@link IParser} to handle the parsing of wakelock information
*/
public class WakelockParser implements IParser {
private static final String WAKE_LOCK_PAT_SUFFIX =
"(?:(\\d+)d)?\\s?(?:(\\d+)h)?\\s?(?:(\\d+)m)?\\s?(?:(\\d+)s)?\\s?(?:(\\d+)ms)?"
+ "\\s?\\((\\d+) times\\)(?: max=\\d+)? realtime";
/**
* Match a valid line such as:
* " Kernel Wake lock PowerManagerService.WakeLocks: 1h 13m 50s 950ms (2858 times) realtime"
*/
private static final Pattern KERNEL_WAKE_LOCK_PAT = Pattern.compile(
"^\\s*Kernel Wake lock (.+): " + WAKE_LOCK_PAT_SUFFIX);
/**
* Match a valid line such as:
* " Wake lock u0a7 NlpWakeLock: 8m 13s 203ms (1479 times) realtime";
*/
private static final Pattern PARTIAL_WAKE_LOCK_PAT = Pattern.compile(
"^\\s*Wake lock (.*)\\s(.+): " + WAKE_LOCK_PAT_SUFFIX);
private WakelockItem mItem = new WakelockItem();
public static final int TOP_WAKELOCK_COUNT = 5;
/**
* {@inheritDoc}
*/
@Override
public WakelockItem parse(List<String> lines) {
Matcher m = null;
int wakelockCounter = 0;
for (String line : lines) {
if (wakelockCounter >= TOP_WAKELOCK_COUNT || "".equals(line.trim())) {
// Done with wakelock parsing
break;
}
m = KERNEL_WAKE_LOCK_PAT.matcher(line);
if (m.matches() && !line.contains("PowerManagerService.WakeLocks")) {
parseKernelWakeLock(line, WakeLockCategory.KERNEL_WAKELOCK);
wakelockCounter++;
continue;
}
m = PARTIAL_WAKE_LOCK_PAT.matcher(line);
if (m.matches()) {
parsePartialWakeLock(line, WakeLockCategory.PARTIAL_WAKELOCK);
wakelockCounter++;
}
}
return mItem;
}
/**
* Parse a line of output and add it to wakelock section
* <p>
* Exposed for unit testing.
* </p>
*/
void parseKernelWakeLock(String line, WakeLockCategory category) {
Matcher m = KERNEL_WAKE_LOCK_PAT.matcher(line);
if (!m.matches()) {
return;
}
final String name = m.group(1);
final long wakelockTime = NumberFormattingUtil.getMs(
NumberFormattingUtil.parseIntOrZero(m.group(2)),
NumberFormattingUtil.parseIntOrZero(m.group(3)),
NumberFormattingUtil.parseIntOrZero(m.group(4)),
NumberFormattingUtil.parseIntOrZero(m.group(5)),
NumberFormattingUtil.parseIntOrZero(m.group(6)));
final int timesCalled = Integer.parseInt(m.group(7));
mItem.addWakeLock(name, wakelockTime, timesCalled, category);
}
/**
* Parse a line of output and add it to wake lock section.
* <p>
* Exposed for unit testing.
* </p>
*/
void parsePartialWakeLock(String line, WakeLockCategory category) {
Matcher m = PARTIAL_WAKE_LOCK_PAT.matcher(line);
if (!m.matches()) {
return;
}
final String processUID = m.group(1);
final String name = m.group(2);
final long wakelockTime = NumberFormattingUtil.getMs(
NumberFormattingUtil.parseIntOrZero(m.group(3)),
NumberFormattingUtil.parseIntOrZero(m.group(4)),
NumberFormattingUtil.parseIntOrZero(m.group(5)),
NumberFormattingUtil.parseIntOrZero(m.group(6)),
NumberFormattingUtil.parseIntOrZero(m.group(7)));
final int timesCalled = Integer.parseInt(m.group(8));
mItem.addWakeLock(name, processUID, wakelockTime, timesCalled, category);
}
/**
* Get the {@link WakelockItem}.
* <p>
* Exposed for unit testing.
* </p>
*/
WakelockItem getItem() {
return mItem;
}
}
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