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/*
* Copyright (C) 2014 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.CompactMemInfoItem;
import java.lang.NumberFormatException;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Parser for the compact meminfo output, from the 'dumpsys meminfo -c' command.
* The output is a csv file which contains the information about how processes use memory.
* For now we are only interested in the pss of the processes. So we only parse the lines
* that start with proc and skip everything else.
*
* The format of the line is as follows:
* "proc,[type],[name],[pid],[pss],[activities].
*
* Type is the type of the process for example native, cached, foreground, etc.
* Name is the name of the process.
* Activities indicates if a process has any activities associated with it.
*
*/
public class CompactMemInfoParser implements IParser {
private static final Pattern PROC_PATTERN =
Pattern.compile("proc,(\\w+),([a-zA-Z_0-9\\.]+),(\\d+),(\\d+),((\\S+),)?(.*)");
private static final Pattern LOST_RAM_PATTERN = Pattern.compile("lostram,(\\d+)");
private static final Pattern RAM_PATTERN = Pattern.compile("ram,(\\d+),(\\d+),(\\d+)");
private static final Pattern ZRAM_PATTERN = Pattern.compile("zram,(\\d+),(\\d+),(\\d+)");
private static final Pattern TUNING_PATTERN = Pattern.compile("tuning,(\\d+),(\\d+),(\\d+).*");
/**
* Parse compact meminfo log. Output a CompactMemInfoItem which contains
* the list of processes, their pids and their pss.
*/
@Override
public CompactMemInfoItem parse(List<String> lines) {
CompactMemInfoItem item = new CompactMemInfoItem();
for (String line : lines) {
Matcher m = PROC_PATTERN.matcher(line);
if (m.matches()) {
String type = m.group(1);
String name = m.group(2);
try {
int pid = Integer.parseInt(m.group(3));
long pss = Long.parseLong(m.group(4));
long swap = 0;
if (m.group(6) != null && !"N/A".equals(m.group(6))) {
swap = Long.parseLong(m.group(6));
}
boolean activities = "a".equals(m.group(7));
item.addPid(pid, name, type, pss, swap, activities);
continue;
} catch (NumberFormatException nfe) {
// ignore exception
}
}
m = LOST_RAM_PATTERN.matcher(line);
if (m.matches()) {
try {
long lostRam = Long.parseLong(m.group(1));
item.setLostRam(lostRam);
continue;
} catch (NumberFormatException nfe) {
// ignore exception
}
}
m = RAM_PATTERN.matcher(line);
if (m.matches()) {
try {
item.setFreeRam(Long.parseLong(m.group(2)));
continue;
} catch (NumberFormatException nfe) {
// ignore exception
}
}
m = ZRAM_PATTERN.matcher(line);
if (m.matches()) {
try {
item.setTotalZram(Long.parseLong(m.group(1)));
item.setFreeSwapZram(Long.parseLong(m.group(3)));
continue;
} catch (NumberFormatException nfe) {
// ignore exception
}
}
m = TUNING_PATTERN.matcher(line);
if (m.matches()) {
try {
item.setTuningLevel(Long.parseLong(m.group(3)));
continue;
} catch (NumberFormatException nfe) {
// ignore exception
}
}
}
return item;
}
}
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