Package com.netscape.cms.servlet.base

Class 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

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method 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)