org.eclipse.jetty.util.thread

Class ScheduledExecutorScheduler

java.lang.Object

org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.thread.ScheduledExecutorScheduler

All Implemented Interfaces:

Dumpable, LifeCycle, Scheduler

Direct Known Subclasses:

LowResourceMonitor.LRMScheduler

public class ScheduledExecutorScheduler
extends AbstractLifeCycle
implements Scheduler, Dumpable

Implementation of Scheduler based on JDK's ScheduledThreadPoolExecutor.

While use of ScheduledThreadPoolExecutor creates futures that will not be used, it has the advantage of allowing to set a property to remove cancelled tasks from its queue even if the task did not fire, which provides a huge benefit in the performance of garbage collection in young generation.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	ScheduledExecutorScheduler.ScheduledFutureTask

Nested classes/interfaces inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

AbstractLifeCycle.AbstractLifeCycleListener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.thread.Scheduler

Scheduler.Task

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.LifeCycle

LifeCycle.Listener

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.ClassLoader	classloader
private boolean	daemon
private java.lang.String	name
private java.util.concurrent.ScheduledThreadPoolExecutor	scheduler
private java.lang.Thread	thread
private java.lang.ThreadGroup	threadGroup

Fields inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

FAILED, RUNNING, STARTED, STARTING, STOP_ON_FAILURE, STOPPED, STOPPING

Constructor Summary

Constructors

Constructor and Description
ScheduledExecutorScheduler()
ScheduledExecutorScheduler(java.lang.String name, boolean daemon)
ScheduledExecutorScheduler(java.lang.String name, boolean daemon, java.lang.ClassLoader threadFactoryClassLoader)
ScheduledExecutorScheduler(java.lang.String name, boolean daemon, java.lang.ClassLoader threadFactoryClassLoader, java.lang.ThreadGroup threadGroup)

Method Summary

Modifier and Type	Method and Description
protected void	doStart()
protected void	doStop()
java.lang.String	dump()
void	dump(java.lang.Appendable out, java.lang.String indent)
Scheduler.Task	schedule(java.lang.Runnable task, long delay, java.util.concurrent.TimeUnit unit)

Methods inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

addLifeCycleListener, getState, getState, getStopTimeout, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, setStopTimeout, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.jetty.util.component.LifeCycle

addLifeCycleListener, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, start, stop, stop

Field Detail

name

private final java.lang.String name

daemon

private final boolean daemon

classloader

private final java.lang.ClassLoader classloader

threadGroup

private final java.lang.ThreadGroup threadGroup

scheduler

private volatile java.util.concurrent.ScheduledThreadPoolExecutor scheduler

thread

private volatile java.lang.Thread thread

Constructor Detail

ScheduledExecutorScheduler

public ScheduledExecutorScheduler()

ScheduledExecutorScheduler

public ScheduledExecutorScheduler(java.lang.String name,
                                  boolean daemon)

ScheduledExecutorScheduler

public ScheduledExecutorScheduler(java.lang.String name,
                                  boolean daemon,
                                  java.lang.ClassLoader threadFactoryClassLoader)

ScheduledExecutorScheduler

public ScheduledExecutorScheduler(java.lang.String name,
                                  boolean daemon,
                                  java.lang.ClassLoader threadFactoryClassLoader,
                                  java.lang.ThreadGroup threadGroup)

Method Detail

doStart

protected void doStart()
                throws java.lang.Exception

Overrides:

doStart in class AbstractLifeCycle

Throws:

java.lang.Exception

doStop

protected void doStop()
               throws java.lang.Exception

Overrides:

doStop in class AbstractLifeCycle

Throws:

java.lang.Exception

schedule

public Scheduler.Task schedule(java.lang.Runnable task,
                               long delay,
                               java.util.concurrent.TimeUnit unit)

Specified by:

schedule in interface Scheduler

dump

public java.lang.String dump()

Specified by:

dump in interface Dumpable

dump

public void dump(java.lang.Appendable out,
                 java.lang.String indent)
          throws java.io.IOException

Specified by:

dump in interface Dumpable

Throws:

java.io.IOException