antliscence/src/testcases/org/apache/tools/ant/taskdefs/TestProcess.java

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
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 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
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 * 5. Products derived from this software may not be called "Apache"
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.tools.ant.taskdefs;

/**
 * Interactive Testcase for Processdestroyer.
 *
 * @author <a href="mailto:mnewcomb@tacintel.com">Michael Newcomb</a>
 */
public class TestProcess
    implements Runnable
{
    private boolean run = true;
    private boolean done = false;

    public void shutdown()
    {
        if (!done)
        {
            System.out.println("shutting down TestProcess");
            run = false;
            
            synchronized(this)
            {
                while (!done)
                {
                    try { wait(); } catch (InterruptedException ie) {}
                }
            }
            
            System.out.println("TestProcess shut down");
        }
    }

    public void run()
    {
        for (int i = 0; i < 5 && run; i++)
        {
            System.out.println(Thread.currentThread().getName());
            
            try { Thread.sleep(2000); } catch (InterruptedException ie) {}
        }

        synchronized(this)
        {
            done = true;
            notifyAll();
        }
    }

    public Thread getShutdownHook()
    {
        return new TestProcessShutdownHook();
    }

    private class TestProcessShutdownHook
        extends Thread
    {
        public void run()
        {
            shutdown();
        }
    }

    public static void main(String[] args)
    {
        TestProcess tp = new TestProcess();
        new Thread(tp, "TestProcess thread").start();
        Runtime.getRuntime().addShutdownHook(tp.getShutdownHook());
    }
}