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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.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_PREFIX = Pattern.compile(
"proc,(.+),(.+),(\\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_PREFIX.matcher(line);
if (!m.matches()) continue;
if (m.groupCount() != 5) continue;
String type = m.group(1);
String name = m.group(2);
int pid = Integer.parseInt(m.group(3));
long pss = Long.parseLong(m.group(4));
boolean activities = "a".equals(m.group(5));
item.addPid(pid, name, type, pss, activities);
}
return item;
}
}
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