Repository /Debellor/debellor-1.0.jar:org.debellor.core.util.CellStats

/*
 *  Debellor
 *
 *  Copyright (C) 2008-2009 by Marcin Wojnarski
 *
 *  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 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package org.debellor.core.util;

import org.debellor.core.Cell;


public class CellStats {
	private static final double NANO = 1.0 / 1000000000;
	
	//public final Map<String,Object> map = new HashMap<String,Object>();
	
	private long startNext;
	private long timeNext;
	private long startWait;
	private long timeWait;
	private long timeNextTotal;
	private long timeWaitTotal;

	void preNext()		{ startNext = System.nanoTime(); }
	void postNext()		{ timeNext = System.nanoTime() - startNext;
						  timeNextTotal += timeNext;
						}
	void preWait()		{ startWait = System.nanoTime(); }
	void postWait()		{ timeWait = System.nanoTime() - startWait;
						  timeWaitTotal += timeWait;
						}
	
	/** Total execution time of all calls to {@link Cell#onNext()}, in seconds. */
	public double timeOfAllNext() { return timeNextTotal * NANO; }

	/** In multithreaded execution of {@link Cell#onNext()}, total time of retrieving
	 * of next samples from the working thread, in seconds. */
	public double timeOfAllWait() { return timeWaitTotal * NANO; }
}