1 /*

     2  * Copyright (c) 2007, 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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    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 /* @test

    25  *

    26  * @bug 6480289

    27  * @author Igor Kushnirskiy

    28  * @summary tests if consequent workers are executed on the same thread and that VM can exit.

    29  */

    30 

    31 import java.util.*;

    32 import javax.swing.SwingWorker;

    33 

    34 public class bug6480289 {

    35     private static final int ITERATIONS = 5;

    36     private static final Map<Thread, Integer> threadMap =

    37         Collections.synchronizedMap(new HashMap<Thread, Integer>());

    38     public static void main(String[] args) throws Exception {

    39 

    40         for (int i = 0; i < ITERATIONS; i++) {

    41             if (i != 0) {

    42                 Thread.sleep(1000 * 5);

    43             }

    44             SwingWorker<?,?> worker =

    45                 new SwingWorker<Void, Void>() {

    46                     @Override

    47                     protected Void doInBackground() {

    48                         Integer value = threadMap.get(Thread.currentThread());

    49                         value = Integer.valueOf(

    50                             ((value == null) ? 0 : value.intValue())

    51                             + 1);

    52                         threadMap.put(Thread.currentThread(), value);

    53                         return null;

    54                     }

    55                 };

    56             worker.execute();

    57         }

    58         if (threadMap.keySet().size() != 1) {

    59             throw new RuntimeException("failed. More than one thread.");

    60         }

    61     }

    62 }