daemonthreads.java

java程序写系统的服务

package org.tanukisoftware.wrapper.test;

/*
 * Copyright (c) 1999, 2006 Tanuki Software Inc.
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of the Java Service Wrapper and associated
 * documentation files (the "Software"), to deal in the Software
 * without  restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sub-license,
 * and/or sell copies of the Software, and to permit persons to
 * whom the Software is furnished to do so, subject to the
 * following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 * 
 * 
 * Portions of the Software have been derived from source code
 * developed by Silver Egg Technology under the following license:
 * 
 * Copyright (c) 2001 Silver Egg Technology
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without 
 * restriction, including without limitation the rights to use, 
 * copy, modify, merge, publish, distribute, sub-license, and/or 
 * sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following 
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 */

// $Log: DaemonThreads.java,v $
// Revision 1.6  2006/06/28 05:05:18  mortenson
// Removed the custom thread counting used to keep track of when the wrapped
// Java application has completed.
//
// Revision 1.5  2006/02/24 05:45:58  mortenson
// Update the copyright.
//
// Revision 1.4  2005/05/23 02:39:30  mortenson
// Update the copyright information.
//
// Revision 1.3  2004/01/16 04:41:55  mortenson
// The license was revised for this version to include a copyright omission.
// This change is to be retroactively applied to all versions of the Java
// Service Wrapper starting with version 3.0.0.
//
// Revision 1.2  2003/04/03 04:05:22  mortenson
// Fix several typos in the docs.  Thanks to Mike Castle.
//
// Revision 1.1  2003/02/03 06:55:29  mortenson
// License transfer to TanukiSoftware.org
//

/**
 *
 *
 * @author Leif Mortenson <[e-mail]>
 * @version $Revision: 1.6 $
 */
public class DaemonThreads implements Runnable {
    private static boolean m_started = false;
    
    /*---------------------------------------------------------------
     * Runnable Method
     *-------------------------------------------------------------*/
    public void run() {
        m_started = true;
        while(true) {
            System.out.println(Thread.currentThread().getName() + " running...");
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
            }
        }
    }
    
    /*---------------------------------------------------------------
     * Main Method
     *-------------------------------------------------------------*/
    public static void main(String[] args) {
        System.out.println("Daemon Thread Test Running...");
        System.out.println("Launching background daemon threads...");
        
        DaemonThreads app = new DaemonThreads();
        for (int i = 0; i < 2; i++) {
            Thread thread = new Thread(app, "App-Thread-" + i);
            thread.setDaemon(true);
            thread.start();
        }
        
        // Wait for at least one of the daemon threads to start to make sure
        //  this main method does not exit prematurely and trigger a JVM
        //  shutdown.
        while ( !m_started )
        {
            try
            {
                Thread.sleep( 10 );
            }
            catch ( InterruptedException e )
            {
                // Ignore.
            }
        }
        
        System.out.println("The JVM should exit momentarily.");
        
        System.out.println("Daemon Thread Test Main Done...");
    }
}