org.jbpm.pvm.internal.jobexecutor
Class DispatcherThread

java.lang.Object
  java.lang.Thread
      org.jbpm.pvm.internal.jobexecutor.DispatcherThread

All Implemented Interfaces:

java.lang.Runnable

public class DispatcherThread
extends java.lang.Thread

this thread is responsible for acquiring jobs in the job that need to be executed and then let the JobExecutor dispatch the acquired ids to one of the JobExecutorThreads in the pool. There is only one dispatcher thread per JobExecutor.

Author:

Tom Baeyens, Guillaume Porcher

Nested Class Summary

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

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

Field Summary

protected boolean	checkForNewJobs
protected int	currentIdleInterval
protected boolean	isActive
protected JobExecutor	jobExecutor
protected java.lang.Object	semaphore

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

protected	DispatcherThread(JobExecutor jobExecutor)
protected	DispatcherThread(JobExecutor jobExecutor, java.lang.String name)

Method Summary

protected java.util.Collection<java.lang.Long>	acquireJobs()
void	deactivate()
void	deactivate(boolean join)
protected java.util.Date	getNextDueDate()
protected long	getWaitPeriod()
boolean	isActive()
void	jobWasAdded()
void	run()
protected void	submitAcquiredJobDbids(java.util.Collection<java.lang.Long> jobDbids)

Methods inherited from class java.lang.Thread

activeCount, checkAccess, 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

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

Field Detail

jobExecutor

protected JobExecutor jobExecutor

isActive

protected volatile boolean isActive

checkForNewJobs

protected boolean checkForNewJobs

currentIdleInterval

protected int currentIdleInterval

semaphore

protected java.lang.Object semaphore

Constructor Detail

DispatcherThread

protected DispatcherThread(JobExecutor jobExecutor)

DispatcherThread

protected DispatcherThread(JobExecutor jobExecutor,
                           java.lang.String name)

Method Detail

run

public void run()

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

submitAcquiredJobDbids

protected void submitAcquiredJobDbids(java.util.Collection<java.lang.Long> jobDbids)

acquireJobs

protected java.util.Collection<java.lang.Long> acquireJobs()

getNextDueDate

protected java.util.Date getNextDueDate()

getWaitPeriod

protected long getWaitPeriod()

deactivate

public void deactivate()

deactivate

public void deactivate(boolean join)

jobWasAdded

public void jobWasAdded()

isActive

public boolean isActive()