org.pajes.html
Class PajeMemoryManager

java.lang.Object
  java.lang.Thread
      org.pajes.html.PajeMemoryManager

All Implemented Interfaces:

java.lang.Runnable

public class PajeMemoryManager
extends java.lang.Thread

The PajeMemoryManager is responsible for destroying Paje instances after they have been finished with, and can also intermittently suggest that the garbage collector should run.

PajeMemoryManager can be configured to call System.gc() at a minimum interval by having a <context-param> with a <param-name> of org.pajes.html.PajeMemoryManager.gcInterval. in the web application deployment descriptor. The a <param-value> of this parameter should be a positive integer to set the interval, or a negative integer to turn off forced garbage collection.

Note that the interval is a minimum interval: garbage collection is only suggested when a Paje is being destroyed and the minimum interval has elapsed.

The following example calls System.gc() at a minimum interval of 1 minute:

   <context-param>
       <param-name>org.pajes.html.PajeMemoryManager.gcInterval</param-name>
       <param-value>60000</param-value>
   </context-param>
 

The following example calls System.gc() every time a Paje is destroyed:

   <context-param>
       <param-name>org.pajes.html.PajeMemoryManager.gcInterval</param-name>
       <param-value>0</param-value>
   </context-param>
 

The following example turns off the calls to System.gc():

   <context-param>
       <param-name>org.pajes.html.PajeMemoryManager.gcInterval</param-name>
       <param-value>-1</param-value>
   </context-param>
 

Alternatively, the entire <context-param> could be removed to turn off garbage collection.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Method Summary

void	run() Monitors the queue, waiting for notification that a Paje has been finished with.
void	shutdown() Shuts down this PajeMemoryManager.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Method Detail

run

public void run()

Monitors the queue, waiting for notification that a Paje has been finished with. When notified, all Pajes currently in the queue are processed.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

shutdown

public void shutdown()

Shuts down this PajeMemoryManager.