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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  
20  package org.eclipse.jetty.util.preventers;
21  
22  import java.sql.DriverManager;
23  
24  
25  /**
26   * DriverManagerLeakPreventer
27   *
28   * Cause DriverManager.getCallerClassLoader() to be called, which will pin the classloader.
29   * 
30   * Inspired by Tomcat JreMemoryLeakPrevention.
31   */
32  public class DriverManagerLeakPreventer extends AbstractLeakPreventer
33  {
34      /* ------------------------------------------------------------ */
35      @Override
36      public void prevent(ClassLoader loader)
37      {
38          if (LOG.isDebugEnabled())
39              LOG.debug("Pinning DriverManager classloader with "+loader);
40          DriverManager.getDrivers();
41      }
42  
43  }