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/**
 * COOS - Connected Objects Operating System (www.connectedobjects.org).
 *
 * Copyright (C) 2009 Telenor ASA and Tellu AS. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 *
 * You may also contact one of the following for additional information:
 * Telenor ASA, Snaroyveien 30, N-1331 Fornebu, Norway (www.telenor.no)
 * Tellu AS, Hagalokkveien 13, N-1383 Asker, Norway (www.tellu.no)
 */
package org.coos.messaging.util;

/**
 * Thread pool thread to use in environments
 * that do not support java.util.concurrent.
 * 
 * @author Knut Eilif Husa, Tellu AS
 */
public class ThreadPoolThread implements Runnable {
    private Thread thread;
    private ThreadPool tp;
    private boolean active = false, running = true;

    ThreadPoolThread(ThreadPool tp) {
        this.tp = tp;

        thread = new Thread(this, tp.name + "-" + this);
        thread.start();
    }

    public void run() {

        while (running) {

            try {

                // Get the next task from the parent ThreadPool
                Runnable r = tp.getRunnable();

                // Run the task!
                active = true;
                r.run();
                active = false;
            } catch (InterruptedException e) {
                return;
            } catch (Exception e) {
                LogFactory.getLog(this.getClass()).error("Exception in ThreadPoolThread", e);
            }
        }
    }

    public boolean active() {
        return active;
    }

    public void stop() {
        running = false;
        thread.interrupt();
    }
}