1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.events;
24  
25  import com.liferay.portal.kernel.events.ActionException;
26  import com.liferay.portal.kernel.events.SessionAction;
27  
28  import java.text.NumberFormat;
29  
30  import javax.servlet.http.HttpSession;
31  
32  import org.apache.commons.logging.Log;
33  import org.apache.commons.logging.LogFactory;
34  
35  /**
36   * <a href="GarbageCollectorAction.java.html"><b><i>View Source</i></b></a>
37   *
38   * @author Brian Wing Shun Chan
39   *
40   */
41  public class GarbageCollectorAction extends SessionAction {
42  
43      public void run(HttpSession ses) throws ActionException {
44          Runtime runtime = Runtime.getRuntime();
45  
46          NumberFormat nf = NumberFormat.getInstance();
47  
48          if (_log.isDebugEnabled()) {
49              _log.debug(
50                  "Before:\t\t" +
51                      nf.format(runtime.freeMemory()) + "\t" +
52                          nf.format(runtime.totalMemory()) + "\t" +
53                              nf.format(runtime.maxMemory()));
54          }
55  
56          System.gc();
57  
58          if (_log.isDebugEnabled()) {
59              _log.debug(
60                  "After:\t\t" +
61                      nf.format(runtime.freeMemory()) + "\t" +
62                          nf.format(runtime.totalMemory()) + "\t" +
63                              nf.format(runtime.maxMemory()));
64          }
65      }
66  
67      private static Log _log = LogFactory.getLog(GarbageCollectorAction.class);
68  
69  }