| /* |
| * Copyright (c) 2008, 2009, 2011, 2012 Eike Stepper (Berlin, Germany) and others. |
| * 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: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.net4j.util.cache; |
| |
| import org.eclipse.net4j.util.cache.ICacheMonitor.Condition; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public class ThresholdConditionPolicy implements ICacheMonitor.ConditionPolicy |
| { |
| private long thresholdRedYellow; |
| |
| private long thresholdYellowGreen; |
| |
| public ThresholdConditionPolicy(long thresholdRedYellow, long thresholdYellowGreen) |
| { |
| if (thresholdRedYellow > thresholdYellowGreen) |
| { |
| throw new IllegalArgumentException("thresholdRedYellow > thresholdYellowGreen"); //$NON-NLS-1$ |
| } |
| |
| this.thresholdRedYellow = thresholdRedYellow; |
| this.thresholdYellowGreen = thresholdYellowGreen; |
| } |
| |
| public long getThresholdRedYellow() |
| { |
| return thresholdRedYellow; |
| } |
| |
| public long getThresholdYellowGreen() |
| { |
| return thresholdYellowGreen; |
| } |
| |
| public Condition getNewCondition(Condition oldCondition) |
| { |
| return getNewCondition(oldCondition, Runtime.getRuntime().freeMemory()); |
| } |
| |
| protected Condition getNewCondition(Condition oldCondition, long freeMemory) |
| { |
| if (freeMemory > thresholdYellowGreen) |
| { |
| return Condition.GREEN; |
| } |
| |
| if (freeMemory > thresholdRedYellow) |
| { |
| return Condition.YELLOW; |
| } |
| |
| return Condition.RED; |
| } |
| } |