org.vfny.geoserver.action.FreeMemoryAction Maven / Gradle / Ivy
/*
* Created on Jan 28, 2004
*
* To change the template for this generated file go to
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*/
package org.vfny.geoserver.action;
import org.apache.struts.Globals;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.vfny.geoserver.global.UserContainer;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Free Memory by running the garbage collector.
*
* This represents an action that interacts with the running GeoServer
* application (it is not really a config action, it is just that I want the
* user to be logged in).
*
* @author Jody Garnett, Refractions Research, Inc.
* @author $Author: jive $ (last modification)
* @version $Id: FreeMemoryAction.java 6177 2007-02-19 10:11:27Z aaime $
*/
public class FreeMemoryAction extends ConfigAction {
/* (non-Javadoc)
* @see org.vfny.geoserver.action.ConfigAction#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, org.vfny.geoserver.global.UserContainer, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public ActionForward execute(ActionMapping mapping, ActionForm form, UserContainer user,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
Runtime rt = Runtime.getRuntime();
long before = rt.freeMemory();
System.gc();
System.runFinalization();
long after = rt.freeMemory();
long difference = (before - after) / 1024;
// Provide status message
//
ActionErrors errors = new ActionErrors();
errors.add(ActionErrors.GLOBAL_ERROR,
new ActionError("message.memory", new Long(difference)));
request.setAttribute(Globals.ERROR_KEY, errors);
// return back to the admin screen
//
return mapping.findForward("admin");
}
}