org.eclipse.jetty.io.ManagedSelector Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.io;
import java.io.Closeable;
import java.io.IOException;
import java.net.ConnectException;
import java.net.SocketTimeoutException;
import java.nio.channels.CancelledKeyException;
import java.nio.channels.ClosedChannelException;
import java.nio.channels.ClosedSelectorException;
import java.nio.channels.SelectableChannel;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Deque;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Objects;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import org.eclipse.jetty.util.IO;
import org.eclipse.jetty.util.annotation.ManagedAttribute;
import org.eclipse.jetty.util.annotation.ManagedOperation;
import org.eclipse.jetty.util.component.ContainerLifeCycle;
import org.eclipse.jetty.util.component.Dumpable;
import org.eclipse.jetty.util.component.DumpableCollection;
import org.eclipse.jetty.util.statistic.SampleStatistic;
import org.eclipse.jetty.util.thread.AutoLock;
import org.eclipse.jetty.util.thread.ExecutionStrategy;
import org.eclipse.jetty.util.thread.Scheduler;
import org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* {@link ManagedSelector} wraps a {@link Selector} simplifying non-blocking operations on channels.
* {@link ManagedSelector} runs the select loop, which waits on {@link Selector#select()} until events
* happen for registered channels. When events happen, it notifies the {@link EndPoint} associated
* with the channel.
*/
public class ManagedSelector extends ContainerLifeCycle implements Dumpable
{
private static final Logger LOG = LoggerFactory.getLogger(ManagedSelector.class);
private static final boolean FORCE_SELECT_NOW;
static
{
String property = System.getProperty("org.eclipse.jetty.io.forceSelectNow");
if (property != null)
{
FORCE_SELECT_NOW = Boolean.parseBoolean(property);
}
else
{
property = System.getProperty("os.name");
FORCE_SELECT_NOW = property != null && property.toLowerCase(Locale.ENGLISH).contains("windows");
}
}
private final AutoLock _lock = new AutoLock();
private final AtomicBoolean _started = new AtomicBoolean(false);
private boolean _selecting;
private final SelectorManager _selectorManager;
private final int _id;
private final ExecutionStrategy _strategy;
private Selector _selector;
private Deque _updates = new ArrayDeque<>();
private Deque _updateable = new ArrayDeque<>();
private final SampleStatistic _keyStats = new SampleStatistic();
public ManagedSelector(SelectorManager selectorManager, int id)
{
_selectorManager = selectorManager;
_id = id;
SelectorProducer producer = new SelectorProducer();
Executor executor = selectorManager.getExecutor();
_strategy = new AdaptiveExecutionStrategy(producer, executor);
installBean(_strategy, true);
}
public Selector getSelector()
{
return _selector;
}
@Override
protected void doStart() throws Exception
{
super.doStart();
_selector = _selectorManager.newSelector();
// The producer used by the strategies will never
// be idle (either produces a task or blocks).
// The normal strategy obtains the produced task, schedules
// a new thread to produce more, runs the task and then exits.
_selectorManager.execute(_strategy::produce);
// Set started only if we really are started
Start start = new Start();
submit(start);
start._started.await();
}
@Override
protected void doStop() throws Exception
{
// doStop might be called for a failed managedSelector,
// We do not want to wait twice, so we only stop once for each start
if (_started.compareAndSet(true, false) && _selector != null)
{
// Close connections, but only wait a single selector cycle for it to take effect
CloseConnections closeConnections = new CloseConnections();
submit(closeConnections);
closeConnections._complete.await();
// Wait for any remaining endpoints to be closed and the selector to be stopped
StopSelector stopSelector = new StopSelector();
submit(stopSelector);
stopSelector._stopped.await();
}
super.doStop();
}
@ManagedAttribute(value = "Total number of keys", readonly = true)
public int getTotalKeys()
{
Selector selector = _selector;
return selector == null ? 0 : selector.keys().size();
}
@ManagedAttribute(value = "Average number of selected keys", readonly = true)
public double getAverageSelectedKeys()
{
return _keyStats.getMean();
}
@ManagedAttribute(value = "Maximum number of selected keys", readonly = true)
public long getMaxSelectedKeys()
{
return _keyStats.getMax();
}
@ManagedAttribute(value = "Total number of select() calls", readonly = true)
public long getSelectCount()
{
return _keyStats.getCount();
}
@ManagedOperation(value = "Resets the statistics", impact = "ACTION")
public void resetStats()
{
_keyStats.reset();
}
protected int nioSelect(Selector selector, boolean now) throws IOException
{
return now ? selector.selectNow() : selector.select();
}
protected int select(Selector selector) throws IOException
{
try
{
int selected = nioSelect(selector, false);
if (selected == 0)
{
if (LOG.isDebugEnabled())
LOG.debug("Selector {} woken with none selected", selector);
if (Thread.interrupted() && !isRunning())
throw new ClosedSelectorException();
if (FORCE_SELECT_NOW)
selected = nioSelect(selector, true);
}
return selected;
}
catch (ClosedSelectorException x)
{
throw x;
}
catch (Throwable x)
{
handleSelectFailure(selector, x);
return 0;
}
}
protected void handleSelectFailure(Selector selector, Throwable failure) throws IOException
{
LOG.info("Caught select() failure, trying to recover: {}", failure.toString());
if (LOG.isDebugEnabled())
LOG.debug("", failure);
Selector newSelector = _selectorManager.newSelector();
for (SelectionKey oldKey : selector.keys())
{
SelectableChannel channel = oldKey.channel();
int interestOps = safeInterestOps(oldKey);
if (interestOps >= 0)
{
try
{
Object attachment = oldKey.attachment();
SelectionKey newKey = channel.register(newSelector, interestOps, attachment);
if (attachment instanceof Selectable)
((Selectable)attachment).replaceKey(newKey);
oldKey.cancel();
if (LOG.isDebugEnabled())
LOG.debug("Transferred {} iOps={} att={}", channel, interestOps, attachment);
}
catch (Throwable t)
{
if (LOG.isDebugEnabled())
LOG.debug("Could not transfer {}", channel, t);
IO.close(channel);
}
}
else
{
if (LOG.isDebugEnabled())
LOG.debug("Invalid interestOps for {}", channel);
IO.close(channel);
}
}
IO.close(selector);
_selector = newSelector;
}
protected void onSelectFailed(Throwable cause)
{
// override to change behavior
}
public int size()
{
Selector s = _selector;
if (s == null)
return 0;
Set keys = s.keys();
if (keys == null)
return 0;
return keys.size();
}
/**
* Submit an {@link SelectorUpdate} to be acted on between calls to {@link Selector#select()}
*
* @param update The selector update to apply at next wakeup
*/
public void submit(SelectorUpdate update)
{
submit(update, false);
}
private void submit(SelectorUpdate update, boolean lazy)
{
if (LOG.isDebugEnabled())
LOG.debug("Queued change lazy={} {} on {}", lazy, update, this);
Selector selector = null;
try (AutoLock l = _lock.lock())
{
_updates.offer(update);
if (_selecting && !lazy)
{
selector = _selector;
// To avoid the extra select wakeup.
_selecting = false;
}
}
if (selector != null)
{
if (LOG.isDebugEnabled())
LOG.debug("Wakeup on submit {}", this);
selector.wakeup();
}
}
private void wakeup()
{
if (LOG.isDebugEnabled())
LOG.debug("Wakeup {}", this);
Selector selector = null;
try (AutoLock l = _lock.lock())
{
if (_selecting)
{
selector = _selector;
_selecting = false;
}
}
if (selector != null)
selector.wakeup();
}
private void execute(Runnable task)
{
try
{
_selectorManager.execute(task);
}
catch (RejectedExecutionException x)
{
if (task instanceof Closeable)
IO.close((Closeable)task);
}
}
private void processConnect(SelectionKey key, Connect connect)
{
SelectableChannel channel = key.channel();
try
{
key.attach(connect.attachment);
boolean connected = _selectorManager.doFinishConnect(channel);
if (LOG.isDebugEnabled())
LOG.debug("Connected {} {}", connected, channel);
if (connected)
{
if (connect.timeout.cancel())
{
key.interestOps(0);
execute(new CreateEndPoint(connect, key));
}
else
{
throw new SocketTimeoutException("Concurrent Connect Timeout");
}
}
else
{
throw new ConnectException();
}
}
catch (Throwable x)
{
connect.failed(x);
}
}
protected void endPointOpened(EndPoint endPoint)
{
_selectorManager.endPointOpened(endPoint);
}
protected void endPointClosed(EndPoint endPoint)
{
_selectorManager.endPointClosed(endPoint);
}
void createEndPoint(SelectableChannel channel, SelectionKey selectionKey) throws IOException
{
EndPoint endPoint = _selectorManager.newEndPoint(channel, this, selectionKey);
Object context = selectionKey.attachment();
Connection connection = _selectorManager.newConnection(channel, endPoint, context);
endPoint.setConnection(connection);
submit(selector ->
{
SelectionKey key = selectionKey;
if (key.selector() != selector)
{
key = channel.keyFor(selector);
if (key != null && endPoint instanceof Selectable)
((Selectable)endPoint).replaceKey(key);
}
if (key != null)
key.attach(endPoint);
}, true);
endPoint.onOpen();
endPointOpened(endPoint);
_selectorManager.connectionOpened(connection, context);
if (LOG.isDebugEnabled())
LOG.debug("Created {}", endPoint);
}
void destroyEndPoint(EndPoint endPoint, Throwable cause)
{
// Waking up the selector is necessary to clean the
// cancelled-key set and tell the TCP stack that the
// socket is closed (so that senders receive RST).
wakeup();
execute(new DestroyEndPoint(endPoint, cause));
}
private int getActionSize()
{
try (AutoLock l = _lock.lock())
{
return _updates.size();
}
}
static int safeReadyOps(SelectionKey selectionKey)
{
try
{
return selectionKey.readyOps();
}
catch (Throwable x)
{
LOG.trace("IGNORED", x);
return -1;
}
}
static int safeInterestOps(SelectionKey selectionKey)
{
try
{
return selectionKey.interestOps();
}
catch (Throwable x)
{
LOG.trace("IGNORED", x);
return -1;
}
}
@Override
public void dump(Appendable out, String indent) throws IOException
{
List keys;
List updates;
Selector selector = _selector;
if (selector != null && selector.isOpen())
{
DumpKeys dump = new DumpKeys();
String updatesAt = DateTimeFormatter.ISO_OFFSET_DATE_TIME.format(ZonedDateTime.now());
try (AutoLock l = _lock.lock())
{
updates = new ArrayList<>(_updates);
_updates.addFirst(dump);
_selecting = false;
}
if (LOG.isDebugEnabled())
LOG.debug("wakeup on dump {}", this);
selector.wakeup();
keys = dump.get(5, TimeUnit.SECONDS);
String keysAt = DateTimeFormatter.ISO_OFFSET_DATE_TIME.format(ZonedDateTime.now());
if (keys == null)
keys = Collections.singletonList("No dump keys retrieved");
dumpObjects(out, indent,
new DumpableCollection("updates @ " + updatesAt, updates),
new DumpableCollection("keys @ " + keysAt, keys));
}
else
{
dumpObjects(out, indent);
}
}
@Override
public String toString()
{
Selector selector = _selector;
return String.format("%s[id=%s keys=%d selected=%d updates=%d selection:tot=%d/avg=%.2f/max=%d]",
super.toString(),
_id,
selector != null && selector.isOpen() ? selector.keys().size() : -1,
selector != null && selector.isOpen() ? selector.selectedKeys().size() : -1,
getActionSize(),
getSelectCount(),
getAverageSelectedKeys(),
getMaxSelectedKeys()
);
}
/**
* A {@link Selectable} is an {@link EndPoint} that wish to be
* notified of non-blocking events by the {@link ManagedSelector}.
*/
public interface Selectable
{
/**
* Callback method invoked when a read or write events has been
* detected by the {@link ManagedSelector} for this endpoint.
*
* @return a job that may block or null
*/
Runnable onSelected();
/**
* Callback method invoked when all the keys selected by the
* {@link ManagedSelector} for this endpoint have been processed.
*/
void updateKey();
/**
* Callback method invoked when the SelectionKey is replaced
* because the channel has been moved to a new selector.
*
* @param newKey the new SelectionKey
*/
void replaceKey(SelectionKey newKey);
}
private class SelectorProducer implements ExecutionStrategy.Producer
{
private Set _keys = Collections.emptySet();
private Iterator _cursor = Collections.emptyIterator();
@Override
public Runnable produce()
{
while (true)
{
Runnable task = processSelected();
if (task != null)
return task;
processUpdates();
updateKeys();
if (!select())
return null;
}
}
private void processUpdates()
{
try (AutoLock l = _lock.lock())
{
Deque updates = _updates;
_updates = _updateable;
_updateable = updates;
}
if (LOG.isDebugEnabled())
LOG.debug("updateable {}", _updateable.size());
Selector selector = _selector;
while (true)
{
SelectorUpdate update = _updateable.pollFirst();
if (update == null)
break;
if (selector == null)
break;
try
{
if (LOG.isDebugEnabled())
LOG.debug("update {}", update);
update.update(selector);
}
catch (Throwable x)
{
LOG.warn("Cannot update selector {}", ManagedSelector.this, x);
}
}
int updates;
try (AutoLock l = _lock.lock())
{
updates = _updates.size();
_selecting = updates == 0;
if (_selecting)
selector = null;
}
if (LOG.isDebugEnabled())
LOG.debug("updates {}", updates);
if (selector != null)
{
if (LOG.isDebugEnabled())
LOG.debug("wakeup on updates {}", this);
selector.wakeup();
}
}
private boolean select()
{
try
{
Selector selector = _selector;
if (selector != null)
{
if (LOG.isDebugEnabled())
LOG.debug("Selector {} waiting with {} keys", selector, selector.keys().size());
int selected = ManagedSelector.this.select(selector);
// The selector may have been recreated.
selector = _selector;
if (selector != null)
{
if (LOG.isDebugEnabled())
LOG.debug("Selector {} woken up from select, {}/{}/{} selected", selector, selected, selector.selectedKeys().size(), selector.keys().size());
int updates;
try (AutoLock l = _lock.lock())
{
// finished selecting
_selecting = false;
updates = _updates.size();
}
_keys = selector.selectedKeys();
int selectedKeys = _keys.size();
if (selectedKeys > 0)
_keyStats.record(selectedKeys);
_cursor = selectedKeys > 0 ? _keys.iterator() : Collections.emptyIterator();
if (LOG.isDebugEnabled())
LOG.debug("Selector {} processing {} keys, {} updates", selector, selectedKeys, updates);
return true;
}
}
}
catch (Throwable x)
{
IO.close(_selector);
_selector = null;
if (isRunning())
{
LOG.warn("Fatal select() failure", x);
onSelectFailed(x);
}
else
{
if (LOG.isDebugEnabled())
LOG.warn("select() failure", x);
else
LOG.warn("select() failure {}", x.toString());
}
}
return false;
}
private Runnable processSelected()
{
while (_cursor.hasNext())
{
SelectionKey key = _cursor.next();
Object attachment = key.attachment();
SelectableChannel channel = key.channel();
if (key.isValid())
{
if (LOG.isDebugEnabled())
LOG.debug("selected {} {} {} ", safeReadyOps(key), key, attachment);
try
{
if (attachment instanceof Selectable)
{
// Try to produce a task
Runnable task = ((Selectable)attachment).onSelected();
if (task != null)
return task;
}
else if (key.isConnectable())
{
processConnect(key, (Connect)attachment);
}
else
{
throw new IllegalStateException("key=" + key + ", att=" + attachment + ", iOps=" + safeInterestOps(key) + ", rOps=" + safeReadyOps(key));
}
}
catch (CancelledKeyException x)
{
if (LOG.isDebugEnabled())
LOG.debug("Ignoring cancelled key for channel {}", channel);
IO.close(attachment instanceof EndPoint ? (EndPoint)attachment : channel);
}
catch (Throwable x)
{
LOG.warn("Could not process key for channel {}", channel, x);
IO.close(attachment instanceof EndPoint ? (EndPoint)attachment : channel);
}
}
else
{
if (LOG.isDebugEnabled())
LOG.debug("Selector loop ignoring invalid key for channel {}", channel);
IO.close(attachment instanceof EndPoint ? (EndPoint)attachment : channel);
}
}
return null;
}
private void updateKeys()
{
// Do update keys for only previously selected keys.
// This will update only those keys whose selection did not cause an
// updateKeys update to be submitted.
for (SelectionKey key : _keys)
{
Object attachment = key.attachment();
if (attachment instanceof Selectable)
((Selectable)attachment).updateKey();
}
_keys.clear();
}
@Override
public String toString()
{
return String.format("%s@%x", getClass().getSimpleName(), hashCode());
}
}
/**
* A selector update to be done when the selector has been woken.
*/
public interface SelectorUpdate
{
void update(Selector selector);
}
private class Start implements SelectorUpdate
{
private final CountDownLatch _started = new CountDownLatch(1);
@Override
public void update(Selector selector)
{
ManagedSelector.this._started.set(true);
_started.countDown();
}
}
private static class DumpKeys implements SelectorUpdate
{
private final CountDownLatch latch = new CountDownLatch(1);
private List keys;
@Override
public void update(Selector selector)
{
Set selectorKeys = selector.keys();
List list = new ArrayList<>(selectorKeys.size());
for (SelectionKey key : selectorKeys)
{
if (key != null)
list.add(String.format("SelectionKey@%x{i=%d}->%s", key.hashCode(), safeInterestOps(key), key.attachment()));
}
keys = list;
latch.countDown();
}
public List get(long timeout, TimeUnit unit)
{
try
{
latch.await(timeout, unit);
}
catch (InterruptedException x)
{
LOG.trace("IGNORED", x);
}
return keys;
}
}
class Acceptor implements SelectorUpdate, Selectable, Closeable
{
private final SelectableChannel _channel;
private SelectionKey _key;
Acceptor(SelectableChannel channel)
{
_channel = channel;
}
@Override
public void update(Selector selector)
{
try
{
_key = _channel.register(selector, SelectionKey.OP_ACCEPT, this);
if (LOG.isDebugEnabled())
LOG.debug("{} acceptor={}", this, _channel);
}
catch (Throwable x)
{
IO.close(_channel);
LOG.warn("Unable to register OP_ACCEPT on selector for {}", _channel, x);
}
}
@Override
public Runnable onSelected()
{
SelectableChannel channel = null;
try
{
while (true)
{
channel = _selectorManager.doAccept(_channel);
if (channel == null)
break;
_selectorManager.accepted(channel);
}
}
catch (Throwable x)
{
LOG.warn("Accept failed for channel {}", channel, x);
IO.close(channel);
}
return null;
}
@Override
public void updateKey()
{
}
@Override
public void replaceKey(SelectionKey newKey)
{
_key = newKey;
}
@Override
public void close() throws IOException
{
// May be called from any thread.
// Implements AbstractConnector.setAccepting(boolean).
submit(selector -> _key.cancel());
}
}
class Accept implements SelectorUpdate, Runnable, Closeable
{
private final SelectableChannel channel;
private final Object attachment;
private SelectionKey key;
Accept(SelectableChannel channel, Object attachment)
{
this.channel = channel;
this.attachment = attachment;
_selectorManager.onAccepting(channel);
}
@Override
public void update(Selector selector)
{
try
{
key = channel.register(selector, 0, attachment);
execute(this);
}
catch (Throwable x)
{
if (LOG.isDebugEnabled())
LOG.debug("Could not register channel after accept {}", channel, x);
failed(x);
}
}
@Override
public void run()
{
try
{
_selectorManager.onAccepted(channel);
createEndPoint(channel, key);
}
catch (Throwable x)
{
if (LOG.isDebugEnabled())
LOG.debug("Could not process accepted channel {}", channel, x);
failed(x);
}
}
@Override
public void close()
{
if (LOG.isDebugEnabled())
LOG.debug("Closed accept of {}", channel);
failed(new ClosedChannelException());
}
private void failed(Throwable failure)
{
IO.close(channel);
_selectorManager.onAcceptFailed(channel, failure);
}
@Override
public String toString()
{
return String.format("%s@%x[%s]", getClass().getSimpleName(), hashCode(), channel);
}
}
class Connect implements SelectorUpdate, Runnable
{
private final AtomicBoolean failed = new AtomicBoolean();
private final SelectableChannel channel;
private final Object attachment;
private final Scheduler.Task timeout;
Connect(SelectableChannel channel, Object attachment)
{
this.channel = channel;
this.attachment = attachment;
long timeout = ManagedSelector.this._selectorManager.getConnectTimeout();
if (timeout > 0)
this.timeout = ManagedSelector.this._selectorManager.getScheduler().schedule(this, timeout, TimeUnit.MILLISECONDS);
else
this.timeout = null;
}
@Override
public void update(Selector selector)
{
try
{
channel.register(selector, SelectionKey.OP_CONNECT, this);
}
catch (Throwable x)
{
failed(x);
}
}
@Override
public void run()
{
if (_selectorManager.isConnectionPending(channel))
{
if (LOG.isDebugEnabled())
LOG.debug("Channel {} timed out while connecting, closing it", channel);
failed(new SocketTimeoutException("Connect Timeout"));
}
}
public void failed(Throwable failure)
{
if (failed.compareAndSet(false, true))
{
if (timeout != null)
timeout.cancel();
IO.close(channel);
ManagedSelector.this._selectorManager.connectionFailed(channel, failure, attachment);
}
}
@Override
public String toString()
{
return String.format("Connect@%x{%s,%s}", hashCode(), channel, attachment);
}
}
private class CloseConnections implements SelectorUpdate
{
private final CountDownLatch _complete = new CountDownLatch(1);
@Override
public void update(Selector selector)
{
try
{
if (LOG.isDebugEnabled())
LOG.debug("Closing {} connections on {}", selector.keys().size(), ManagedSelector.this);
for (SelectionKey key : selector.keys())
{
if (key != null && key.isValid())
{
Closeable closeable = (key.attachment() instanceof EndPoint endPoint)
? Objects.requireNonNullElse(endPoint.getConnection(), endPoint)
: key.channel();
IO.close(closeable);
}
}
}
finally
{
_complete.countDown();
}
}
}
private class StopSelector implements SelectorUpdate
{
private final CountDownLatch _stopped = new CountDownLatch(1);
@Override
public void update(Selector selector)
{
try
{
for (SelectionKey key : selector.keys())
{
// Key may be null when using the UnixSocket selector.
if (key == null)
continue;
Object attachment = key.attachment();
if (attachment instanceof Closeable)
IO.close((Closeable)attachment);
}
_selector = null;
if (LOG.isDebugEnabled())
LOG.debug("Closing {} on {}", selector, ManagedSelector.this);
IO.close(selector);
}
finally
{
_stopped.countDown();
}
}
}
private final class CreateEndPoint implements Runnable
{
private final Connect _connect;
private final SelectionKey _key;
private CreateEndPoint(Connect connect, SelectionKey key)
{
_connect = connect;
_key = key;
}
@Override
public void run()
{
try
{
createEndPoint(_connect.channel, _key);
}
catch (Throwable failure)
{
IO.close(_connect.channel);
LOG.warn("Could not create EndPoint {}: {}", _connect.channel, String.valueOf(failure));
if (LOG.isDebugEnabled())
LOG.debug("", failure);
_connect.failed(failure);
}
}
@Override
public String toString()
{
return String.format("%s@%x{%s}", getClass().getSimpleName(), hashCode(), _connect);
}
}
private class DestroyEndPoint implements Runnable, Closeable
{
private final EndPoint endPoint;
private final Throwable cause;
private DestroyEndPoint(EndPoint endPoint, Throwable cause)
{
this.endPoint = endPoint;
this.cause = cause;
}
@Override
public void run()
{
if (LOG.isDebugEnabled())
LOG.debug("Destroyed {}", endPoint);
Connection connection = endPoint.getConnection();
if (connection != null)
_selectorManager.connectionClosed(connection, cause);
ManagedSelector.this.endPointClosed(endPoint);
}
@Override
public void close()
{
run();
}
}
}
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