jasima.shopSim.prioRules.basic.SRPTPerSLK Maven / Gradle / Ivy

/*******************************************************************************
 * This file is part of jasima, v1.3, the Java simulator for manufacturing and 
 * logistics.
 *  
 * Copyright (c) 2015 		jasima solutions UG
 * Copyright (c) 2010-2015 Torsten Hildebrandt and jasima contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 *******************************************************************************/
package jasima.shopSim.prioRules.basic;

import jasima.shopSim.core.PR;
import jasima.shopSim.core.PrioRuleTarget;

/**
 * This rule implements the "remaining processing time per slack" rule. This is
 * rule 17 (S/WKR, the smallest ratio of slack per work remaining) in Haupt
 * (1989): "A Survey of Priority Rule-Based Scheduling".
 * 
 * @author Torsten Hildebrandt, 2013-08-10
 * @version 
 *          "$Id: SRPTPerSLK.java 753 2015-07-27 15:29:49Z [email protected] $"
 */
public class SRPTPerSLK extends PR {

	private static final long serialVersionUID = 8510560816491893668L;

	public SRPTPerSLK() {
		super();
	}

	@Override
	public double calcPrio(PrioRuleTarget job) {
		return job.remainingProcTime() / SLK.slack(job);
	}

}