| /******************************************************************************* |
| * Copyright (c) 2008-2011 Chair for Applied Software Engineering, |
| * Technische Universitaet Muenchen. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| ******************************************************************************/ |
| package org.eclipse.emf.emfstore.server.taskmanager.tasks; |
| |
| import java.util.Date; |
| |
| import org.eclipse.emf.emfstore.common.model.util.ModelUtil; |
| import org.eclipse.emf.emfstore.server.taskmanager.Task; |
| |
| /** |
| * Dev task which plotts available memory. |
| * |
| * @author wesendon |
| */ |
| public class MemoryPlotter extends Task { |
| |
| /** |
| * Default constructor. |
| * |
| * @param executionTime first |
| * @param period repeat |
| */ |
| public MemoryPlotter(Date executionTime, long period) { |
| super(executionTime, period); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @see org.eclipse.emf.emfstore.server.taskmanager.Task#executeTask() |
| */ |
| @Override |
| public void executeTask() { |
| long freeMemory = Runtime.getRuntime().freeMemory(); |
| long totalMemory = Runtime.getRuntime().totalMemory(); |
| long usedMemory = totalMemory - freeMemory; |
| |
| ModelUtil.logInfo("Total Memory " + calcByte(totalMemory)); |
| ModelUtil.logInfo("Used Memory " + calcByte(usedMemory)); |
| ModelUtil.logInfo("Free Memory " + calcByte(freeMemory) + "\n"); |
| |
| } |
| |
| private static String[] labels = { "B", "KB", "MB", "GB", "TB" }; |
| private static String seperator = " "; |
| private static long boundaryValue = 1024L; |
| |
| private String calcByte(long size) { |
| if (size <= 0) { |
| return null; |
| } |
| |
| if (size < boundaryValue) { |
| return size + seperator + labels[0]; |
| } |
| |
| int power = 1; |
| double tmp = size / boundaryValue; |
| while (tmp > (boundaryValue - 1)) { |
| tmp = tmp / boundaryValue; |
| power++; |
| } |
| |
| if (power < labels.length) { |
| return tmp + seperator + labels[power]; |
| } |
| |
| return "" + size; |
| } |
| } |