gr.uoa.di.madgik.grs.registry

Class LifecycleManager

java.lang.Object

java.lang.Thread

gr.uoa.di.madgik.grs.registry.LifecycleManager

All Implemented Interfaces:

Runnable

public class LifecycleManager
extends Thread

The LifecycleManager is a utility class that monitors the items registered with the GRSRegistry and makes sure that they are properly purged when their lifecycle properties dictates their disposal. The property that is taken into account in this decision is the last activity time of each entry. Whenever its inactivity time has extended over the timeout set for each one, the item is disposed. The timeout that is taken into account for IBuffers, is IBuffer.getInactivityTimeout() and IBuffer.getInactivityTimeUnit(). For IBufferStores, is IBufferStore.getInactivityTimeout() and IBufferStore.getInactivityTimeUnit().
The check is performed with a dynamically defined period. Initially this period is set to DefaultCheckPeriod. During each iteration, the minimum of the non to be disposed remaining lifetime is selected for both IBuffer and IBufferStore entries. At every subsequent iteration, this period is recomputed to avoid unnecessary checks

Author:

gpapanikos

Nested Class Summary

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

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
static long	DefaultCheckPeriod The default check period.

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
LifecycleManager()

Method Summary

Methods

Modifier and Type	Method and Description
void	run()

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

Field Detail

DefaultCheckPeriod

public static final long DefaultCheckPeriod

The default check period. Currently set to 2 minutes

See Also:

Constant Field Values

Constructor Detail

LifecycleManager

public LifecycleManager()

Method Detail

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread