poolskimmerthread.java

Java Database connection pool

/*
 *  PoolMan Java Object Pooling and Caching Library
 *  Copyright (C) 1999-2001 The Code Studio
 *
 *  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 2 of the License, or (at your option) any later version.
 *
 *  This library 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.
 *
 *  The full license is located at the root of this distribution
 *  in the LICENSE file.
 */
package com.codestudio.util;


/**
 * PoolSkimmer manages the clean up of dead and expired objects
 * floating around the pool.
 *<p>
 * Another Thread, LifeGuardThread, also monitors ObjectPool
 * instances. LifeGuardThread is more humane; it attempts to
 * send troubled objects back to their pools. PoolSkimmerThread
 * simply disposes of already dead or useless objects.
 *<br>
 * @see LifeGuardThread
 */
public class PoolSkimmerThread implements Runnable {

    private long timeout;
    private ObjectPool pool;


    public PoolSkimmerThread(int skimmerSecs, ObjectPool pool) {
        this.timeout = (skimmerSecs * 1000);
        this.pool = pool;
    }

    public void run() {

        for (; ;) {
            try {
                Thread.sleep(this.timeout);
            } catch (InterruptedException e) {
            }
            this.pool.cleanUp();
        }
    }

}