BufferConcurrentLinkedQueue.java

/**
 * Start time:11:42:12 2009-05-17<br>
 * Project: mobicents-media-server-core<br>
 * 
 * @author <a href="mailto:baranowb@gmail.com">baranowb - Bartosz Baranowski
 *         </a>
 * @author <a href="mailto:brainslog@gmail.com"> Alexandre Mendonca </a>
 */
package org.mobicents.media.server.impl.rtp;

import java.util.Collection;
import java.util.concurrent.ConcurrentLinkedQueue;

/**
 * Start time:11:42:12 2009-05-17<br>
 * Project: mobicents-media-server-core<br>
 * 
 * @author <a href="mailto:baranowb@gmail.com">baranowb - Bartosz Baranowski
 *         </a>
 */
public class BufferConcurrentLinkedQueue<T> extends ConcurrentLinkedQueue<T> {

	private T stored = null;

	/**
	 * 	
	 */
	public BufferConcurrentLinkedQueue() {
		// TODO Auto-generated constructor stub
	}

	/**
	 * tttttt
	 * 
	 * @param c
	 */
	public BufferConcurrentLinkedQueue(Collection<T> c) {
		super(c);
		// TODO Auto-generated constructor stub
	}

	@Override
	public T peek() {
		if (this.stored != null) {
			return stored;
		} else {
			return super.peek();
		}
	}

	@Override
	public T poll() {
		if (this.stored != null) {
			try {
				T b= stored;
				return b;
			} finally {
				stored = null;
			}
		} else {
			return super.poll();
		}
	}

	@Override
	public int size() {
		if (this.stored != null) {

			return super.size() + 1;

		} else {
			return super.size();
		}
	}
	
	public boolean storeAtHead(T toStore)
	{
		if(this.stored == null)
		{
			this.stored = toStore;
			return true;
		}else
		{
			return false;
		}
	}

}