| /* |
| * 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_PREFIX = Pattern.compile( |
| "proc,(\\w+),([a-zA-Z_0-9\\.]+),(\\d+),(\\d+),((\\S+),)?(.*)"); |
| private static final Pattern LOST_RAM_PREFIX = Pattern.compile( |
| "lostram,(.+)"); |
| |
| /** |
| * 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()) { |
| 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_PREFIX.matcher(line); |
| if (m.matches()) { |
| String name = "Lost RAM"; |
| try { |
| long lostRam = Long.parseLong(m.group(1)); |
| item.setLostRam(lostRam); |
| continue; |
| } catch (NumberFormatException nfe) { |
| // ignore exception |
| } |
| } |
| } |
| return item; |
| } |
| } |