| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.jackrabbit.oak.threadDump; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.io.LineNumberReader; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.regex.Pattern; |
| |
| /** |
| * A tool that removes uninteresting lines from stack traces. |
| */ |
| public class ThreadDumpCleaner { |
| |
| private static final String[] PATTERN_ARRAY = { |
| "\"Concurrent Mark-Sweep GC Thread\".*\n", |
| |
| "\"Exception Catcher Thread\".*\n", |
| |
| "JNI global references:.*\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\n", |
| |
| "\".*?\".*\n\n", |
| |
| "\\$\\$YJP\\$\\$", |
| |
| "\"(Attach|Service|VM|GC|DestroyJavaVM|Signal|AWT|AppKit|C2 |Low Mem|" + |
| "process reaper|YJPAgent-).*?\"(?s).*?\n\n", |
| |
| " Locked ownable synchronizers:(?s).*?\n\n", |
| |
| " Locked synchronizers:(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State: (TIMED_)?WAITING(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at sun.nio.ch.KQueueArrayWrapper.kevent0(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at java.io.FileInputStream.readBytes(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at sun.nio.ch.ServerSocketChannelImpl.accept(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at java.net.DualStackPlainSocketImpl.accept0(?s).*\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at sun.nio.ch.EPollArrayWrapper.epollWait(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at java.lang.Object.wait(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at java.net.PlainSocketImpl.socketAccept(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at java.net.SocketInputStream.socketRead0(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at sun.nio.ch.WindowsSelectorImpl\\$SubSelector.poll0(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at sun.management.ThreadImpl.dumpThreads0(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at sun.misc.Unsafe.park(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at java.net.PlainSocketImpl.socketClose0(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at java.net.PlainSocketImpl.socketAvailable(?s).*?\n\n", |
| |
| "\".*?\".*?\n java.lang.Thread.State:.*\n\t" + |
| "at java.net.PlainSocketImpl.socketConnect(?s).*?\n\n", |
| |
| "<EndOfDump>\n\n", |
| |
| }; |
| |
| private static ArrayList<Pattern> PATTERNS = new ArrayList<Pattern>(); |
| |
| static { |
| for (String s : PATTERN_ARRAY) { |
| PATTERNS.add(Pattern.compile(s)); |
| } |
| } |
| |
| public static File process(File file) throws IOException { |
| String fileName = file.getName(); |
| if (fileName.endsWith(".txt")) { |
| fileName = fileName.substring(0, fileName.length() - ".txt".length()); |
| } |
| File target = new File(file.getParentFile(), fileName + ".filtered.txt"); |
| PrintWriter writer = new PrintWriter(new BufferedWriter( |
| new FileWriter(target))); |
| try { |
| processFile(file, writer); |
| } finally { |
| writer.close(); |
| } |
| return target; |
| } |
| |
| private static void processFile(File file, PrintWriter writer) throws IOException { |
| LineNumberReader r = new LineNumberReader(new BufferedReader( |
| new FileReader(file))); |
| try { |
| process(r, writer); |
| } finally { |
| r.close(); |
| } |
| } |
| |
| private static void process(LineNumberReader reader, PrintWriter writer) throws IOException { |
| StringBuilder buff = new StringBuilder(); |
| int activeThreadCount = 0; |
| while (true) { |
| String line = reader.readLine(); |
| if (line == null) { |
| break; |
| } |
| if (line.startsWith("Full thread dump") || line.startsWith("Full Java thread dump")) { |
| if (activeThreadCount > 0) { |
| // System.out.println("Active threads: " + activeThreadCount); |
| } |
| activeThreadCount = 0; |
| } |
| buff.append(line).append('\n'); |
| if (line.trim().length() == 0) { |
| String filtered = filter(buff.toString()); |
| if (filtered.trim().length() > 10) { |
| activeThreadCount++; |
| } |
| writer.print(filtered); |
| buff = new StringBuilder(); |
| } |
| } |
| writer.println(filter(buff.toString())); |
| } |
| |
| private static String filter(String s) { |
| for (Pattern p : PATTERNS) { |
| s = p.matcher(s).replaceAll(""); |
| } |
| return s; |
| } |
| |
| } |