org.apache.jk.common
Class Shm

java.lang.Object
  org.apache.jk.core.JkHandler
      org.apache.jk.common.JniHandler
          org.apache.jk.common.Shm

All Implemented Interfaces:

java.util.EventListener, javax.management.MBeanRegistration, javax.management.NotificationListener

Direct Known Subclasses:

Shm14

public class Shm

extends JniHandler

Handle the shared memory objects.

Author:

Costin Manolache

Field Summary

Fields inherited from class org.apache.jk.common.JniHandler

apr, C2B_NOTE, JK_HANDLE_JNI_DISPATCH, JK_HANDLE_SHM_DISPATCH, jkHome, MB_NOTE, MSG_NOTE, nativeJkHandlerP

Fields inherited from class org.apache.jk.core.JkHandler

domain, ERROR, HANDLE_FLUSH, HANDLE_RECEIVE_PACKET, HANDLE_SEND_PACKET, HANDLE_THREAD_END, id, LAST, mserver, name, next, nextName, OK, oname, properties, wEnv

Constructor Summary

Shm()

Method Summary

void	destroy() Clean up and stop the handler
void	dumpScoreboard(java.lang.String fname)
void	execute()
void	init() You must call initNative() inside the component init()
void	initCli() Local initialization - for standalone use
int	invoke(Msg msg, MsgContext ep) Base implementation for invoke.
static void	main(java.lang.String[] args)
void	registerTomcat(java.lang.String host, int port, java.lang.String unixDomain) Register a tomcat instance XXX make it more flexible
void	resetScoreboard()
void	setDump(java.lang.String dumpFile) Copy the scoreboard in a file for debugging Will also log a lot of information about what's in the scoreboard.
void	setFile(java.lang.String f) Scoreboard location
void	setGroup(java.lang.String grp) Mark this instance as belonging to a group
void	setHelp(boolean b)
void	setHost(java.lang.String host) Ajp13 host
void	setPort(int port) Ajp13 port
void	setReset(boolean b) Set this to get the scoreboard reset.
void	setSize(int size) Size.
void	setUnixSocket(java.lang.String unixSocket) Unix socket where tomcat is listening.
void	setUnregister(boolean unregister) Set this option to mark the tomcat instance as 'down', so apache will no longer forward messages to it.
void	unRegisterTomcat(java.lang.String host, int port)

Methods inherited from class org.apache.jk.common.JniHandler

appendString, createMsgContext, destroyJkComponent, getJkHome, initJkComponent, initNative, nativeDispatch, pause, recycleNative, resume, setJkHome, setNativeAttribute, setNativeEndpoint

Methods inherited from class org.apache.jk.core.JkHandler

addHandlerCallback, getDomain, getId, getName, getNext, getObjectName, getProperty, handleNotification, postDeregister, postRegister, preDeregister, preRegister, setId, setName, setNext, setNext, setProperty, setWorkerEnv

Methods inherited from class java.lang.Object

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

Constructor Detail

Shm

public Shm()

Method Detail

setFile

public void setFile(java.lang.String f)

Scoreboard location

setDump

public void setDump(java.lang.String dumpFile)

Copy the scoreboard in a file for debugging Will also log a lot of information about what's in the scoreboard.

setSize

public void setSize(int size)

Size. Used only if the scoreboard is to be created.

setReset

public void setReset(boolean b)

Set this to get the scoreboard reset. The shm segment will be destroyed and a new one created, with the provided size. Requires "file" and "size".

setHost

public void setHost(java.lang.String host)

Ajp13 host

setGroup

public void setGroup(java.lang.String grp)

Mark this instance as belonging to a group

setPort

public void setPort(int port)

Ajp13 port

setUnixSocket

public void setUnixSocket(java.lang.String unixSocket)

Unix socket where tomcat is listening. Use it only if tomcat is on the same host, of course

setUnregister

public void setUnregister(boolean unregister)

Set this option to mark the tomcat instance as 'down', so apache will no longer forward messages to it. Note that requests with a session will still try this host first. This can be used to implement gracefull shutdown. Host and port are still required, since they are used to identify tomcat.

init

public void init()
          throws java.io.IOException

Description copied from class: JniHandler

You must call initNative() inside the component init()

Overrides:

init in class JniHandler

Throws:

java.io.IOException

resetScoreboard

public void resetScoreboard()
                     throws java.io.IOException

Throws:

java.io.IOException

dumpScoreboard

public void dumpScoreboard(java.lang.String fname)
                    throws java.io.IOException

Throws:

java.io.IOException

registerTomcat

public void registerTomcat(java.lang.String host,
                           int port,
                           java.lang.String unixDomain)
                    throws java.io.IOException

Register a tomcat instance XXX make it more flexible

Throws:

java.io.IOException

unRegisterTomcat

public void unRegisterTomcat(java.lang.String host,
                             int port)
                      throws java.io.IOException

Throws:

java.io.IOException

destroy

public void destroy()
             throws java.io.IOException

Description copied from class: JkHandler

Clean up and stop the handler

Overrides:

destroy in class JkHandler

Throws:

java.io.IOException

invoke

public int invoke(Msg msg,
                  MsgContext ep)
           throws java.io.IOException

Description copied from class: JniHandler

Base implementation for invoke. Dispatch the action to the native code, where invoke() is called on the wrapped jk_bean.

Overrides:

invoke in class JniHandler

Throws:

java.io.IOException

initCli

public void initCli()
             throws java.io.IOException

Local initialization - for standalone use

Throws:

java.io.IOException

execute

public void execute()

setHelp

public void setHelp(boolean b)

main

public static void main(java.lang.String[] args)