J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999 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 4176355 |
| 27 | * @summary Stopping a ThreadGroup that contains the current thread has |
| 28 | * unpredictable results. |
| 29 | */ |
| 30 | |
| 31 | public class Stop implements Runnable { |
| 32 | private static Thread first=null; |
| 33 | private static Thread second=null; |
| 34 | private static ThreadGroup group = new ThreadGroup(""); |
| 35 | |
| 36 | Stop() { |
| 37 | Thread thread = new Thread(group, this); |
| 38 | if (first == null) |
| 39 | first = thread; |
| 40 | else |
| 41 | second = thread; |
| 42 | |
| 43 | thread.start(); |
| 44 | } |
| 45 | |
| 46 | public void run() { |
| 47 | while (true) { |
| 48 | try { |
| 49 | Thread.sleep(1000); // Give other thread a chance to start |
| 50 | if (Thread.currentThread() == first) |
| 51 | group.stop(); |
| 52 | } catch(InterruptedException e){ |
| 53 | } |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | public static void main(String[] args) throws Exception { |
| 58 | for (int i=0; i<2; i++) |
| 59 | new Stop(); |
| 60 | Thread.sleep(3000); |
| 61 | boolean failed = second.isAlive(); |
| 62 | first.stop(); second.stop(); |
| 63 | if (failed) |
| 64 | throw new RuntimeException("Failure."); |
| 65 | } |
| 66 | } |