1 // 2 // ======================================================================== 3 // Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd. 4 // ------------------------------------------------------------------------ 5 // All rights reserved. This program and the accompanying materials 6 // are made available under the terms of the Eclipse Public License v1.0 7 // and Apache License v2.0 which accompanies this distribution. 8 // 9 // The Eclipse Public License is available at 10 // http://www.eclipse.org/legal/epl-v10.html 11 // 12 // The Apache License v2.0 is available at 13 // http://www.opensource.org/licenses/apache2.0.php 14 // 15 // You may elect to redistribute this code under either of these licenses. 16 // ======================================================================== 17 // 18 19 package org.eclipse.jetty.util.preventers; 20 21 import javax.xml.parsers.DocumentBuilderFactory; 22 23 /** 24 * DOMLeakPreventer 25 * 26 * See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6916498 27 * 28 * Prevent the RuntimeException that is a static member of AbstractDOMParser 29 * from pinning a webapp classloader by causing it to be set here by a non-webapp classloader. 30 * 31 * Note that according to the bug report, a heap dump may not identify the GCRoot, making 32 * it difficult to identify the cause of the leak. 33 * 34 */ 35 public class DOMLeakPreventer extends AbstractLeakPreventer 36 { 37 /* ------------------------------------------------------------ */ 38 /** 39 * @see org.eclipse.jetty.util.preventers.AbstractLeakPreventer#prevent(java.lang.ClassLoader) 40 */ 41 @Override 42 public void prevent(ClassLoader loader) 43 { 44 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 45 try 46 { 47 factory.newDocumentBuilder(); 48 } 49 catch (Exception e) 50 { 51 LOG.warn(e); 52 } 53 54 } 55 56 }