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Java example source code file (Stop.java)
The Stop.java Java example source code/* * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /** * @test * @bug 4176355 * @summary Stopping a ThreadGroup that contains the current thread has * unpredictable results. */ public class Stop implements Runnable { private static boolean groupStopped = false ; private static final Object lock = new Object(); private static final ThreadGroup group = new ThreadGroup(""); private static final Thread first = new Thread(group, new Stop()); private static final Thread second = new Thread(group, new Stop()); public void run() { while (true) { // Give the other thread a chance to start try { Thread.sleep(1000); } catch (InterruptedException e) { } // When the first thread runs, it will stop the group. if (Thread.currentThread() == first) { synchronized (lock) { try { group.stop(); } finally { // Signal the main thread it is time to check // that the stopped thread group was successful groupStopped = true; lock.notifyAll(); } } } } } public static void main(String[] args) throws Exception { // Launch two threads as part of the same thread group first.start(); second.start(); // Wait for the thread group stop to be issued synchronized(lock){ while (!groupStopped) { lock.wait(); // Give the other thread a chance to stop Thread.sleep(1000); } } // Check that the second thread is terminated when the // first thread terminates the thread group. boolean failed = second.isAlive(); // Clean up any threads that may have not been terminated first.stop(); second.stop(); if (failed) throw new RuntimeException("Failure."); } } Other Java examples (source code examples)Here is a short list of links related to this Java Stop.java source code file: |
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