Class Shutdowner

java.lang.Object

java.lang.Thread

clazzfish.monitor.util.Shutdowner

All Implemented Interfaces:

Shutdownable, Runnable

Direct Known Subclasses:

AbstractMonitor, ClazzStatistic

public abstract class Shutdowner
extends Thread
implements Shutdownable

The class Shutdowner has the necessary methods for registration a class as shutdown hook. For this you must overwrite the Thread.run() method which is called during shutdown.

Since:

2.3 (29.11.24)

Author:

oboehm

Nested Class Summary

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

Thread.Builder, Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor	Description
Shutdowner()

Method Summary

Modifier and Type	Method	Description
void	addMeAsShutdownHook()	To be able to register the class as shutdown hook via JMX we can't use a static method - this is the reason why this additional method was added.
boolean	isShutdownHook()	Here you can ask if the class was already registered as shutdown hook.
void	removeMeAsShutdownHook()	If you want to unregister the instance as shutdown hook you can use this (not static) method.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, isVirtual, join, join, join, join, ofPlatform, ofVirtual, onSpinWait, run, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, sleep, start, startVirtualThread, stop, threadId, toString, yield

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Runnable

run

Constructor Details

Shutdowner

public Shutdowner()

Method Details

isShutdownHook

public boolean isShutdownHook()

Here you can ask if the class was already registered as shutdown hook.

Specified by:

isShutdownHook in interface Shutdownable

Returns:

true if it is registered as shutdown hook.

addMeAsShutdownHook

public void addMeAsShutdownHook()

To be able to register the class as shutdown hook via JMX we can't use a static method - this is the reason why this additional method was added.

If this class is registered as shutdown hook from a web application a dump to a directory may not be possible because the application server (e.g. Tomcat) has been stopped already the web application instance. This was the problem as described in bugs/37.

In this situation it is not possible to add the class as shutdown hook.

Specified by:

addMeAsShutdownHook in interface Shutdownable

removeMeAsShutdownHook

public void removeMeAsShutdownHook()

If you want to unregister the instance as shutdown hook you can use this (not static) method.

Specified by:

removeMeAsShutdownHook in interface Shutdownable