/*
 * Created on 27-Apr-2006
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package com.aelitis.azureus.core.networkmanager;

import org.gudy.azureus2.core3.util.Debug;

public class
EventWaiter 
{
	private boolean	sleeping;
	private boolean	wakeup_outstanding;
	
	public
	EventWaiter()
	{
	}
	
	public boolean
	waitForEvent(
		long	timeout )
	{
		synchronized( this ){
					
			if ( wakeup_outstanding ){
								
				wakeup_outstanding	= false;
				
				return( false );
			}
			
			try{
				sleeping	= true;

				this.wait( timeout );
				
			}catch( Throwable e ){
				
				Debug.printStackTrace( e );
				
			}finally{
				
				sleeping	= false;
			}
			
			return( true );
		}
	}
	
	public void
	eventOccurred()
	{
		synchronized( this ){

			if ( !sleeping ){
				
				wakeup_outstanding	= true;
				
			}else{
				
				this.notify();
			}
		}
	}
}
