1 /*

     2  * Copyright 2003 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /**

    25  *  @test

    26  *  @bug 4893530

    27  *  @summary If JDI is initially started from a thread group that is subsequently

    28  *           destroyed this should not impact subsequent thread creation by

    29  *           the virtual machine manager.

    30  *

    31  *  @run build TestScaffold VMConnection TargetListener TargetAdapter

    32  *  @run compile ThreadGroupTest.java

    33  *  @run main ThreadGroupTest

    34  */

    35 import com.sun.jdi.*;

    36 import com.sun.jdi.connect.*;

    37 import com.sun.jdi.event.*;

    38 import com.sun.jdi.request.*;

    39 

    40 import java.util.*;

    41 

    42     /********** target program **********/

    43 

    44 class ThreadGroupTarg {

    45     public static void main(String[] args){

    46         System.out.println("Howdy!");

    47         System.out.println("Goodbye from ThreadGroupTarg!");

    48     }

    49 }

    50 

    51     /********** test program **********/

    52 

    53 public class ThreadGroupTest extends TestScaffold {

    54     ReferenceType targetClass;

    55     ThreadReference mainThread;

    56 

    57     // Helper thread to fetch VirtualMachineManager

    58     static class Fetcher implements Runnable {

    59         public void run() {

    60             Bootstrap.virtualMachineManager();

    61         }

    62     }

    63 

    64     ThreadGroupTest (String args[]) {

    65         super(args);

    66     }

    67 

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

    69         // create a random thread group, and run a thread in that group to

    70         // fetch the VirtualMachineManager

    71         ThreadGroup tg = new ThreadGroup("Gus");

    72         Fetcher fetcher = new Fetcher();

    73         Thread thr = new Thread(tg, fetcher);

    74         thr.start();

    75         try {

    76             thr.join();

    77         } catch (InterruptedException x) { }

    78         // now destroy the thread group

    79         tg.destroy();

    80 

    81         // run the test

    82         new ThreadGroupTest(args).startTests();

    83     }

    84 

    85     /********** test core **********/

    86 

    87     protected void runTests() throws Exception {

    88 

    89         // run the target until it completes

    90         startToMain("ThreadGroupTarg");

    91         listenUntilVMDisconnect();

    92 

    93         /*

    94          * deal with results of test

    95          * if anything has called failure("foo") testFailed will be true

    96          */

    97         if (!testFailed) {

    98             println("ThreadGroupTest: passed");

    99         } else {

   100             throw new Exception("ThreadGroupTest: failed");

   101         }

   102     }

   103 }