se.jiderhamn.classloader.leak.prevention.cleanup

Class StopThreadsCleanUp

java.lang.Object

se.jiderhamn.classloader.leak.prevention.cleanup.StopThreadsCleanUp

All Implemented Interfaces:

ClassLoaderPreMortemCleanUp

public class StopThreadsCleanUp
extends Object
implements ClassLoaderPreMortemCleanUp

Check if there are threads running within the protected ClassLoader, or otherwise referencing it, and either warn or stop those threads depending on settings.

Author:

Mattias Jiderhamn

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	StopThreadsCleanUp.JURTKiller Inner class with the sole task of killing JURT finalizer thread after it is done processing jobs.

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	JURT_ASYNCHRONOUS_FINALIZER
protected boolean	stopThreads
protected boolean	stopTimerThreads Should Timer threads tied to the protected ClassLoader classloader be forced to stop at application shutdown?
protected int	threadWaitMs No of milliseconds to wait for threads to finish execution, before stopping them.

Constructor Summary

Constructors

Constructor and Description
StopThreadsCleanUp() Default constructor with stopThreads = true and stopTimerThreads = true
StopThreadsCleanUp(boolean stopThreads, boolean stopTimerThreads)

Method Summary

Modifier and Type	Method and Description
void	cleanUp(ClassLoaderLeakPreventor preventor) Perform cleanup actions needed to make provided ClassLoaderLeakPreventor.classLoader ready for garbage collection.
protected void	forceStartOpenOfficeJurtCleanup(ClassLoaderLeakPreventor preventor) The bug detailed at https://issues.apache.org/ooo/show_bug.cgi?
void	setStopThreads(boolean stopThreads)
void	setStopTimerThreads(boolean stopTimerThreads)
void	setThreadWaitMs(int threadWaitMs)
protected void	stopThreads(ClassLoaderLeakPreventor preventor) Partially inspired by org.apache.catalina.loader.WebappClassLoader.clearReferencesThreads()
protected void	stopTimerThread(ClassLoaderLeakPreventor preventor, Thread thread)

Methods inherited from class java.lang.Object

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

Field Detail

JURT_ASYNCHRONOUS_FINALIZER

protected static final String JURT_ASYNCHRONOUS_FINALIZER

See Also:

Constant Field Values

stopThreads

protected boolean stopThreads

threadWaitMs

protected int threadWaitMs

No of milliseconds to wait for threads to finish execution, before stopping them.

stopTimerThreads

protected boolean stopTimerThreads

Should Timer threads tied to the protected ClassLoader classloader be forced to stop at application shutdown?

Constructor Detail

StopThreadsCleanUp

public StopThreadsCleanUp()

Default constructor with stopThreads = true and stopTimerThreads = true

StopThreadsCleanUp

public StopThreadsCleanUp(boolean stopThreads,
                          boolean stopTimerThreads)

Method Detail

setStopThreads

public void setStopThreads(boolean stopThreads)

setStopTimerThreads

public void setStopTimerThreads(boolean stopTimerThreads)

setThreadWaitMs

public void setThreadWaitMs(int threadWaitMs)

cleanUp

public void cleanUp(ClassLoaderLeakPreventor preventor)

Description copied from interface: ClassLoaderPreMortemCleanUp

Perform cleanup actions needed to make provided ClassLoaderLeakPreventor.classLoader ready for garbage collection.

Specified by:

cleanUp in interface ClassLoaderPreMortemCleanUp

forceStartOpenOfficeJurtCleanup

protected void forceStartOpenOfficeJurtCleanup(ClassLoaderLeakPreventor preventor)

The bug detailed at https://issues.apache.org/ooo/show_bug.cgi?id=122517 is quite tricky. This is a try to avoid the issues by force starting the threads and it's job queue.

stopThreads

protected void stopThreads(ClassLoaderLeakPreventor preventor)

Partially inspired by org.apache.catalina.loader.WebappClassLoader.clearReferencesThreads()

stopTimerThread

protected void stopTimerThread(ClassLoaderLeakPreventor preventor,
                               Thread thread)