1 /*
   2  * Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6963811
  27  * @summary Tests deadlock in PropertyEditorManager
  28  * @author Sergey Malenkov
  29  * @modules java.desktop/com.sun.beans.editors
  30  * @compile -XDignore.symbol.file Test6963811.java
  31  * @run main Test6963811
  32  */
  33 
  34 import java.beans.PropertyEditorManager;
  35 import com.sun.beans.editors.StringEditor;
  36 
  37 public class Test6963811 implements Runnable {
  38     private final long time;
  39     private final boolean sync;
  40 
  41     public Test6963811(long time, boolean sync) {
  42         this.time = time;
  43         this.sync = sync;
  44     }
  45 
  46     public void run() {
  47         try {
  48             Thread.sleep(this.time); // increase the chance of the deadlock
  49             if (this.sync) {
  50                 synchronized (Test6963811.class) {
  51                     PropertyEditorManager.findEditor(Super.class);
  52                 }
  53             }
  54             else {
  55                 PropertyEditorManager.findEditor(Sub.class);
  56             }
  57         }
  58         catch (Exception exception) {
  59             exception.printStackTrace();
  60         }
  61     }
  62 
  63     public static void main(String[] args) throws Exception {
  64         Thread[] threads = new Thread[2];
  65         for (int i = 0; i < threads.length; i++) {
  66             threads[i] = new Thread(new Test6963811(0L, i > 0));
  67             threads[i].start();
  68             Thread.sleep(500L); // increase the chance of the deadlock
  69         }
  70         for (Thread thread : threads) {
  71             thread.join();
  72         }
  73     }
  74 
  75     public static class Super {
  76     }
  77 
  78     public static class Sub extends Super {
  79     }
  80 
  81     public static class SubEditor extends StringEditor {
  82         public SubEditor() {
  83             new Test6963811(1000L, true).run();
  84         }
  85     }
  86 }