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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.util;

/**
 * Runs a given function in a loop (in a separate thread) until it is stopped
 * @author Bela Ban
 * @since  4.0
 */
public class Runner implements Runnable {
    protected final ThreadFactory factory;
    protected final String        thread_name;
    protected final Runnable      function;
    protected final Runnable      stop_function;
    protected volatile boolean    running;
    protected Thread              thread;


    public Runner(ThreadFactory factory, String thread_name, Runnable function, Runnable stop_function) {
        this.factory=factory;
        this.thread_name=thread_name;
        this.function=function;
        this.stop_function=stop_function;
    }

    public Thread  getThread()  {return thread;}
    public boolean isRunning()  {return running;}


    public synchronized void start() {
        if(running)
            return;
        if(thread == null || !thread.isAlive()) {
            String name=thread_name != null? thread_name : "runner";
            thread=factory != null? factory.newThread(this, name) : new Thread(this, name);
            running=true;
            thread.start();
        }
    }

    public synchronized void stop() {
        running=false;
        Thread tmp=thread;
        thread=null;
        if(tmp != null) {
            tmp.interrupt();
            if(tmp.isAlive()) {
                try {tmp.join(500);} catch(InterruptedException e) {}
            }
        }
        if(stop_function != null)
            stop_function.run();
    }


    public void run() {
        while(running) {
            try {
                function.run();
            }
            catch(Throwable t) {
            }
        }
    }


}