001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.events;
016    
017    import com.liferay.portal.kernel.events.SessionAction;
018    import com.liferay.portal.kernel.log.Log;
019    import com.liferay.portal.kernel.log.LogFactoryUtil;
020    
021    import java.text.NumberFormat;
022    
023    import javax.servlet.http.HttpSession;
024    
025    /**
026     * @author Brian Wing Shun Chan
027     */
028    public class GarbageCollectorAction extends SessionAction {
029    
030            public void run(HttpSession session) {
031                    Runtime runtime = Runtime.getRuntime();
032    
033                    NumberFormat nf = NumberFormat.getInstance();
034    
035                    if (_log.isDebugEnabled()) {
036                            _log.debug(
037                                    "Before:\t\t" +
038                                            nf.format(runtime.freeMemory()) + "\t" +
039                                                    nf.format(runtime.totalMemory()) + "\t" +
040                                                            nf.format(runtime.maxMemory()));
041                    }
042    
043                    System.gc();
044    
045                    if (_log.isDebugEnabled()) {
046                            _log.debug(
047                                    "After:\t\t" +
048                                            nf.format(runtime.freeMemory()) + "\t" +
049                                                    nf.format(runtime.totalMemory()) + "\t" +
050                                                            nf.format(runtime.maxMemory()));
051                    }
052            }
053    
054            private static Log _log = LogFactoryUtil.getLog(
055                    GarbageCollectorAction.class);
056    
057    }