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src/org/cloudbus/cloudsim/power/lists/PowerVmList.java

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+/*
+ * Title:        CloudSim Toolkit
+ * Description:  CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds
+ * Licence:      GPL - http://www.gnu.org/copyleft/gpl.html
+ *
+ * Copyright (c) 2009-2012, The University of Melbourne, Australia
+ */
+
+package org.cloudbus.cloudsim.power.lists;
+
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+import org.cloudbus.cloudsim.Vm;
+import org.cloudbus.cloudsim.core.CloudSim;
+import org.cloudbus.cloudsim.lists.VmList;
+
+/**
+ * PowerVmList is a collection of operations on lists of power-enabled VMs.
+ * 
+ * If you are using any algorithms, policies or workload included in the power package, please cite
+ * the following paper:
+ * 
+ * Anton Beloglazov, and Rajkumar Buyya, "Optimal Online Deterministic Algorithms and Adaptive
+ * Heuristics for Energy and Performance Efficient Dynamic Consolidation of Virtual Machines in
+ * Cloud Data Centers", Concurrency and Computation: Practice and Experience (CCPE), Volume 24,
+ * Issue 13, Pages: 1397-1420, John Wiley & Sons, Ltd, New York, USA, 2012
+ * 
+ * @author Anton Beloglazov
+ * 
+ * @author Anton Beloglazov
+ * @since CloudSim Toolkit 2.0
+ */
+public class PowerVmList extends VmList {
+
+	/**
+	 * Sort by cpu utilization.
+	 * 
+	 * @param vmList the vm list
+	 */
+	public static <T extends Vm> void sortByCpuUtilization(List<T> vmList) {
+		Collections.sort(vmList, new Comparator<T>() {
+
+			@Override
+			public int compare(T a, T b) throws ClassCastException {
+				Double aUtilization = a.getTotalUtilizationOfCpuMips(CloudSim.clock());
+				Double bUtilization = b.getTotalUtilizationOfCpuMips(CloudSim.clock());
+				return bUtilization.compareTo(aUtilization);
+			}
+		});
+	}
+
+}