1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.events;
21  
22  import com.liferay.portal.kernel.events.SessionAction;
23  import com.liferay.portal.kernel.log.Log;
24  import com.liferay.portal.kernel.log.LogFactoryUtil;
25  
26  import java.text.NumberFormat;
27  
28  import javax.servlet.http.HttpSession;
29  
30  /**
31   * <a href="GarbageCollectorAction.java.html"><b><i>View Source</i></b></a>
32   *
33   * @author Brian Wing Shun Chan
34   *
35   */
36  public class GarbageCollectorAction extends SessionAction {
37  
38      public void run(HttpSession session) {
39          Runtime runtime = Runtime.getRuntime();
40  
41          NumberFormat nf = NumberFormat.getInstance();
42  
43          if (_log.isDebugEnabled()) {
44              _log.debug(
45                  "Before:\t\t" +
46                      nf.format(runtime.freeMemory()) + "\t" +
47                          nf.format(runtime.totalMemory()) + "\t" +
48                              nf.format(runtime.maxMemory()));
49          }
50  
51          System.gc();
52  
53          if (_log.isDebugEnabled()) {
54              _log.debug(
55                  "After:\t\t" +
56                      nf.format(runtime.freeMemory()) + "\t" +
57                          nf.format(runtime.totalMemory()) + "\t" +
58                              nf.format(runtime.maxMemory()));
59          }
60      }
61  
62      private static Log _log =
63          LogFactoryUtil.getLog(GarbageCollectorAction.class);
64  
65  }