Package org.eclipse.jetty.io

Class ManagedSelector

java.lang.Object

org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.ContainerLifeCycle

org.eclipse.jetty.io.ManagedSelector

All Implemented Interfaces:

Container, Destroyable, Dumpable, Dumpable.DumpableContainer, LifeCycle

public class ManagedSelector
extends ContainerLifeCycle
implements Dumpable

ManagedSelector wraps a Selector simplifying non-blocking operations on channels.

ManagedSelector runs the select loop, which waits on Selector.select() until events happen for registered channels. When events happen, it notifies the EndPoint associated with the channel.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ManagedSelector.Selectable	A ManagedSelector.Selectable is an EndPoint that wish to be notified of non-blocking events by the ManagedSelector.
static interface	ManagedSelector.SelectorUpdate	A selector update to be done when the selector has been woken.

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

AbstractLifeCycle.AbstractLifeCycleListener, AbstractLifeCycle.StopException

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

Container.InheritedListener, Container.Listener

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

Dumpable.DumpableContainer

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

LifeCycle.Listener

Field Summary

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

FAILED, STARTED, STARTING, STOPPED, STOPPING

Fields inherited from interface org.eclipse.jetty.util.component.Dumpable

KEY

Constructor Summary

Constructors

Constructor	Description
ManagedSelector(SelectorManager selectorManager, int id)

Method Summary

Modifier and Type	Method	Description
protected void	doStart()	Starts the managed lifecycle beans in the order they were added.
protected void	doStop()	Stops the managed lifecycle beans in the reverse order they were added.
void	dump(Appendable out, String indent)	Dump this object (and children) into an Appendable using the provided indent after any new lines.
protected void	endPointClosed(EndPoint endPoint)
protected void	endPointOpened(EndPoint endPoint)
double	getAverageSelectedKeys()
long	getMaxSelectedKeys()
long	getSelectCount()
Selector	getSelector()
int	getTotalKeys()
protected void	handleSelectFailure(Selector selector, Throwable failure)
protected int	nioSelect(Selector selector, boolean now)
protected void	onSelectFailed(Throwable cause)
void	resetStats()
protected int	select(Selector selector)
int	size()
void	submit(ManagedSelector.SelectorUpdate update)	Submit an ManagedSelector.SelectorUpdate to be acted on between calls to Selector.select()
String	toString()

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

addBean, addBean, addEventListener, addManaged, contains, destroy, dump, dump, dumpObjects, dumpStdErr, getBean, getBeans, getBeans, getContainedBeans, getContainedBeans, installBean, installBean, isAuto, isManaged, isUnmanaged, manage, removeBean, removeBeans, removeEventListener, setBeans, start, stop, unmanage, updateBean, updateBean, updateBeans, updateBeans

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

getEventListeners, getState, getState, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, setEventListeners, start, stop

Methods inherited from class java.lang.Object

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

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

getCachedBeans, getEventListeners

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

dump, dumpSelf

Methods inherited from interface org.eclipse.jetty.util.component.Dumpable.DumpableContainer

isDumpable

Constructor Details

ManagedSelector

public ManagedSelector(SelectorManager selectorManager,
 int id)

Method Details

getSelector

public Selector getSelector()

doStart

protected void doStart()
                throws Exception

Description copied from class: ContainerLifeCycle

Starts the managed lifecycle beans in the order they were added.

Overrides:

doStart in class ContainerLifeCycle

Throws:

AbstractLifeCycle.StopException - If thrown, the lifecycle will immediately be stopped.

Exception - If there was a problem starting. Will cause a transition to FAILED state

doStop

protected void doStop()
               throws Exception

Description copied from class: ContainerLifeCycle

Stops the managed lifecycle beans in the reverse order they were added.

Overrides:

doStop in class ContainerLifeCycle

Throws:

Exception - If there was a problem stopping. Will cause a transition to FAILED state

getTotalKeys

@ManagedAttribute(value="Total number of keys",
                  readonly=true)
public int getTotalKeys()

getAverageSelectedKeys

@ManagedAttribute(value="Average number of selected keys",
                  readonly=true)
public double getAverageSelectedKeys()

getMaxSelectedKeys

@ManagedAttribute(value="Maximum number of selected keys",
                  readonly=true)
public long getMaxSelectedKeys()

getSelectCount

@ManagedAttribute(value="Total number of select() calls",
                  readonly=true)
public long getSelectCount()

resetStats

@ManagedOperation(value="Resets the statistics",
                  impact="ACTION")
public void resetStats()

nioSelect

protected int nioSelect(Selector selector,
 boolean now)
                 throws IOException

Throws:

IOException

select

protected int select(Selector selector)
              throws IOException

Throws:

IOException

handleSelectFailure

protected void handleSelectFailure(Selector selector,
 Throwable failure)
                            throws IOException

Throws:

IOException

onSelectFailed

protected void onSelectFailed(Throwable cause)

size

public int size()

submit

public void submit(ManagedSelector.SelectorUpdate update)

Submit an ManagedSelector.SelectorUpdate to be acted on between calls to Selector.select()

Parameters:

update - The selector update to apply at next wakeup

endPointOpened

protected void endPointOpened(EndPoint endPoint)

endPointClosed

protected void endPointClosed(EndPoint endPoint)

dump

public void dump(Appendable out,
 String indent)
          throws IOException

Description copied from interface: Dumpable

Dump this object (and children) into an Appendable using the provided indent after any new lines. The indent should not be applied to the first object dumped.

Specified by:

dump in interface Dumpable

Overrides:

dump in class ContainerLifeCycle

Parameters:

out - The appendable to dump to

indent - The indent to apply after any new lines.

Throws:

IOException - if unable to write to Appendable

toString

public String toString()

Overrides:

toString in class AbstractLifeCycle