com.netscape.cms.servlet.base

Class SystemInfoServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.netscape.cms.servlet.base.SystemInfoServlet

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class SystemInfoServlet
extends javax.servlet.http.HttpServlet

Displays detailed information about java VM internals, including current JVM memory usage, and detailed information about each thread.

Also allows user to trigger a new garbage collection

Version:

$Revision$, $Date$

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SystemInfoServlet()

Method Summary

Modifier and Type	Method and Description
void	init(javax.servlet.ServletConfig sc)
void	service(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) service the request, returning HTML to the client.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SystemInfoServlet

public SystemInfoServlet()

Method Detail

init

public void init(javax.servlet.ServletConfig sc)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Servlet

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

service

public void service(javax.servlet.http.HttpServletRequest request,
                    javax.servlet.http.HttpServletResponse response)
             throws javax.servlet.ServletException,
                    java.io.IOException

service the request, returning HTML to the client. This method has different behaviour depending on the value of the 'op' HTTP parameter.

• op = undefined - display a menu with links to the other functionality of this servlet
• op = gc - tell the JVM that we want to do a garbage collection and to run finalizers (@see java.lang.Runtime.getRuntime#gc() )
• op = general - display information about memory, and other JVM informatino
• op = thread - display details about each thread.

Overrides:

service in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

java.io.IOException

See Also:

HttpServlet.service(HttpServletRequest, HttpServletResponse)