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jsprit-analysis/src/main/java/analysis/StopWatch.java

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+/*******************************************************************************
+ * Copyright (C) 2013  Stefan Schroeder
+ * 
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ * Contributors:
+ *     Stefan Schroeder - initial API and implementation
+ ******************************************************************************/
+package analysis;
+
+import java.util.Collection;
+
+import org.apache.log4j.Logger;
+
+import basics.VehicleRoutingAlgorithm;
+import basics.VehicleRoutingProblem;
+import basics.VehicleRoutingProblemSolution;
+import basics.algo.AlgorithmEndsListener;
+import basics.algo.AlgorithmStartsListener;
+
+public class StopWatch implements AlgorithmStartsListener, AlgorithmEndsListener{
+	
+	private static Logger log = Logger.getLogger(StopWatch.class);
+	
+	private double ran;
+	
+	private double startTime;
+	
+	
+	@Override
+	public void informAlgorithmStarts(VehicleRoutingProblem problem, VehicleRoutingAlgorithm algorithm, Collection<VehicleRoutingProblemSolution> solutions) {
+		reset();
+		start();
+	}
+	
+	public double getCompTimeInSeconds(){
+		return (ran)/1000.0;
+	}
+
+	@Override
+	public void informAlgorithmEnds(VehicleRoutingProblem problem, Collection<VehicleRoutingProblemSolution> solutions) {
+		stop();
+		log.info("computation time [in sec]: " + getCompTimeInSeconds());
+	}
+	
+	public void stop(){
+		ran += System.currentTimeMillis() - startTime;
+	}
+	
+	public void start(){
+		startTime = System.currentTimeMillis();
+	}
+	
+	public void reset(){
+		startTime = 0;
+		ran = 0;
+	}
+	
+	@Override
+	public String toString() {
+		return "stopWatch: " + getCompTimeInSeconds() + " sec";
+	}
+
+	public double getCurrTimeInSeconds() {
+		return (System.currentTimeMillis()-startTime)/1000.0;
+	}
+	
+}