threadfactory.java

来自「OpenJMS是一个开源的Java Message Service API 1.」· Java 代码 · 共 108 行

/**
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided
 * that the following conditions are met:
 *
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 *    copy of this document.
 *
 * 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 name "Exolab" must not be used to endorse or promote
 *    products derived from this Software without prior written
 *    permission of Exoffice Technologies.  For written permission,
 *    please contact [e-mail].
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 *    nor may "Exolab" appear in their names without prior written
 *    permission of Exoffice Technologies. Exolab is a registered
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 *
 * 5. Due credit should be given to the Exolab Project
 *    (http://www.exolab.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 2004-2006 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: ThreadFactory.java,v 1.1 2006/02/23 11:07:05 tanderson Exp $
 */
package org.exolab.jms.common.threads;


/**
 * Thread factory.
 *
 * @author <a href="mailto:[e-mail]">Tim Anderson</a>
 * @version $Revision: 1.1 $ $Date: 2006/02/23 11:07:05 $
 */
public class ThreadFactory
        implements EDU.oswego.cs.dl.util.concurrent.ThreadFactory {

    /**
     * The thread group which threads will belong to. May be <code>null</code>
     */
    private final ThreadGroup _group;

    /**
     * The name to prefix each thread name with
     */
    private final String _name;

    /**
     * Determines if threads will be daemon threads
     */
    private final boolean _daemon;

    /**
     * Seed value for thread names
     */
    private volatile int _nameSeed = 0;


    /**
     * Construct a new <code>ThreadFactory</code>
     *
     * @param group  the thread group. May be <code>null</code>
     * @param name   the name to prefix each thread name with
     * @param daemon if <code>true</code> all threads will be daemon threads
     */
    public ThreadFactory(ThreadGroup group, String name, boolean daemon) {
        _group = group;
        _name = name;
        _daemon = daemon;
    }

    /**
     * Create a new thread that will run the given command when started
     *
     * @param command the command to run. May be <code>null</code>
     * @return a new thread
     */
    public Thread newThread(Runnable command) {
        String name = null;
        if (_name != null) {
            int suffix = ++_nameSeed;
            name = _name + suffix;
        }
        Thread thread = new Thread(_group, command, name);
        thread.setDaemon(_daemon);
        return thread;
    }
}