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Refactor sctp to share code with nio

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This commit is contained in:
norman 2012-03-30 11:07:43 +02:00
parent fd0b0a4e2b
commit a60eecaa0c
38 changed files with 730 additions and 2439 deletions
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1
example/src/main/java/io/netty/example/sctp/SctpClient.java
View File

@ -44,7 +44,6 @@ public class SctpClient {
// Configure the client.
ClientBootstrap bootstrap = new ClientBootstrap(
new SctpClientSocketChannelFactory(
Executors.newCachedThreadPool(),
Executors.newCachedThreadPool()));
final ExecutionHandler executionHandler = new ExecutionHandler(

1
example/src/main/java/io/netty/example/sctp/SctpServer.java
View File

@ -41,7 +41,6 @@ public class SctpServer {
// Configure the server.
ServerBootstrap bootstrap = new ServerBootstrap(
new SctpServerSocketChannelFactory(
Executors.newCachedThreadPool(),
Executors.newCachedThreadPool()));
final ExecutionHandler executionHandler = new ExecutionHandler(

41
transport-sctp/src/main/java/io/netty/channel/sctp/AbstractSctpChannelSink.java
View File

@ -1,41 +0,0 @@
/*
* Copyright 2011 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.sctp;
import io.netty.channel.AbstractChannelSink;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.ChannelRunnableWrapper;
public abstract class AbstractSctpChannelSink extends AbstractChannelSink {
@Override
public ChannelFuture execute(ChannelPipeline pipeline, final Runnable task) {
Channel ch = pipeline.getChannel();
if (ch instanceof SctpChannelImpl) {
SctpChannelImpl channel = (SctpChannelImpl) ch;
ChannelRunnableWrapper wrapper = new ChannelRunnableWrapper(channel, task);
channel.worker.executeInIoThread(wrapper);
return wrapper;
} else {
return super.execute(pipeline, task);
}
}
}

149
transport-sctp/src/main/java/io/netty/channel/sctp/AbstractWriteRequestQueue.java
View File

@ -1,149 +0,0 @@
/*
* Copyright 2011 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.sctp;
import java.util.Collection;
import java.util.Iterator;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
import io.netty.channel.MessageEvent;
import io.netty.util.internal.QueueFactory;
abstract class AbstractWriteRequestQueue implements BlockingQueue<MessageEvent> {
protected final BlockingQueue<MessageEvent> queue;
public AbstractWriteRequestQueue() {
this.queue = QueueFactory.createQueue(MessageEvent.class);
}
@Override
public MessageEvent remove() {
return queue.remove();
}
@Override
public MessageEvent element() {
return queue.element();
}
@Override
public MessageEvent peek() {
return queue.peek();
}
@Override
public int size() {
return queue.size();
}
@Override
public boolean isEmpty() {
return queue.isEmpty();
}
@Override
public Iterator<MessageEvent> iterator() {
return queue.iterator();
}
@Override
public Object[] toArray() {
return queue.toArray();
}
@Override
public <T> T[] toArray(T[] a) {
return queue.toArray(a);
}
@Override
public boolean containsAll(Collection<?> c) {
return queue.containsAll(c);
}
@Override
public boolean addAll(Collection<? extends MessageEvent> c) {
return queue.addAll(c);
}
@Override
public boolean removeAll(Collection<?> c) {
return queue.removeAll(c);
}
@Override
public boolean retainAll(Collection<?> c) {
return queue.retainAll(c);
}
@Override
public void clear() {
queue.clear();
}
@Override
public boolean add(MessageEvent e) {
return queue.add(e);
}
@Override
public void put(MessageEvent e) throws InterruptedException {
queue.put(e);
}
@Override
public boolean offer(MessageEvent e, long timeout, TimeUnit unit) throws InterruptedException {
return queue.offer(e, timeout, unit);
}
@Override
public MessageEvent take() throws InterruptedException {
return queue.take();
}
@Override
public MessageEvent poll(long timeout, TimeUnit unit) throws InterruptedException {
return queue.poll(timeout, unit);
}
@Override
public int remainingCapacity() {
return queue.remainingCapacity();
}
@Override
public boolean remove(Object o) {
return queue.remove(o);
}
@Override
public boolean contains(Object o) {
return queue.contains(o);
}
@Override
public int drainTo(Collection<? super MessageEvent> c) {
return queue.drainTo(c);
}
@Override
public int drainTo(Collection<? super MessageEvent> c, int maxElements) {
return queue.drainTo(c, maxElements);
}
}

44
transport-sctp/src/main/java/io/netty/channel/sctp/NioSctpChannelConfig.java
View File

@ -17,6 +17,7 @@ package io.netty.channel.sctp;
import io.netty.channel.ReceiveBufferSizePredictor;
import io.netty.channel.ReceiveBufferSizePredictorFactory;
import io.netty.channel.socket.nio.NioChannelConfig;
/**
* A {@link io.netty.channel.sctp.SctpChannelConfig} for a NIO SCTP/IP {@link io.netty.channel.sctp.SctpChannel}.
@ -43,48 +44,7 @@ import io.netty.channel.ReceiveBufferSizePredictorFactory;
* </tr>
* </table>
*/
public interface NioSctpChannelConfig extends SctpChannelConfig {
/**
* Returns the high water mark of the write buffer. If the number of bytes
* queued in the write buffer exceeds this value, {@link io.netty.channel.Channel#isWritable()}
* will start to return {@code false}.
*/
int getWriteBufferHighWaterMark();
/**
* Sets the high water mark of the write buffer. If the number of bytes
* queued in the write buffer exceeds this value, {@link io.netty.channel.Channel#isWritable()}
* will start to return {@code false}.
*/
void setWriteBufferHighWaterMark(int writeBufferHighWaterMark);
/**
* Returns the low water mark of the write buffer. Once the number of bytes
* queued in the write buffer exceeded the
* {@linkplain #setWriteBufferHighWaterMark(int) high water mark} and then
* dropped down below this value, {@link io.netty.channel.Channel#isWritable()} will return
* {@code true} again.
*/
int getWriteBufferLowWaterMark();
/**
* Sets the low water mark of the write buffer. Once the number of bytes
* queued in the write buffer exceeded the
* {@linkplain #setWriteBufferHighWaterMark(int) high water mark} and then
* dropped down below this value, {@link io.netty.channel.Channel#isWritable()} will return
* {@code true} again.
*/
void setWriteBufferLowWaterMark(int writeBufferLowWaterMark);
/**
* Returns the maximum loop count for a write operation until
* {@link java.nio.channels.WritableByteChannel#write(java.nio.ByteBuffer)} returns a non-zero value.
* It is similar to what a spin lock is used for in concurrency programming.
* It improves memory utilization and write throughput depending on
* the platform that JVM runs on. The default value is {@code 16}.
*/
int getWriteSpinCount();
public interface NioSctpChannelConfig extends SctpChannelConfig, NioChannelConfig {
/**
* Sets the maximum loop count for a write operation until

6
transport-sctp/src/main/java/io/netty/channel/sctp/SctpAcceptedChannel.java
View File

@ -27,17 +27,13 @@ import static io.netty.channel.Channels.*;
*/
final class SctpAcceptedChannel extends SctpChannelImpl {
final Thread bossThread;
SctpAcceptedChannel(
ChannelFactory factory, ChannelPipeline pipeline,
Channel parent, ChannelSink sink,
SctpChannel socket, SctpWorker worker, Thread bossThread) {
SctpChannel socket, SctpWorker worker) {
super(parent, factory, pipeline, sink, socket, worker);
this.bossThread = bossThread;
setConnected();
fireChannelOpen(this);
fireChannelBound(this, getLocalAddress());

279
transport-sctp/src/main/java/io/netty/channel/sctp/SctpChannelImpl.java
View File

@ -15,22 +15,7 @@
*/
package io.netty.channel.sctp;
import static io.netty.channel.Channels.*;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Queue;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import com.sun.nio.sctp.Association;
import io.netty.channel.AbstractChannel;
import static io.netty.channel.Channels.future;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFactory;
import io.netty.channel.ChannelFuture;
@ -38,12 +23,22 @@ import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelSink;
import io.netty.channel.MessageEvent;
import io.netty.channel.sctp.SctpSendBufferPool.SendBuffer;
import io.netty.util.internal.ThreadLocalBoolean;
import io.netty.channel.sctp.SctpSendBufferPool.SctpSendBuffer;
import io.netty.channel.socket.nio.AbstractNioChannel;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.Collections;
import java.util.HashSet;
import java.util.Queue;
import java.util.Set;
import com.sun.nio.sctp.Association;
/**
*/
class SctpChannelImpl extends AbstractChannel implements SctpChannel {
class SctpChannelImpl extends AbstractNioChannel implements SctpChannel {
private static final int ST_OPEN = 0;
private static final int ST_BOUND = 1;
@ -51,35 +46,14 @@ class SctpChannelImpl extends AbstractChannel implements SctpChannel {
private static final int ST_CLOSED = -1;
volatile int state = ST_OPEN;
final com.sun.nio.sctp.SctpChannel channel;
final SctpWorker worker;
private final NioSctpChannelConfig config;
private volatile InetSocketAddress localAddress;
private volatile InetSocketAddress remoteAddress;
final Object interestOpsLock = new Object();
final Object writeLock = new Object();
final Runnable writeTask = new WriteTask();
final AtomicBoolean writeTaskInTaskQueue = new AtomicBoolean();
final Queue<MessageEvent> writeBuffer = new WriteRequestQueue();
final AtomicInteger writeBufferSize = new AtomicInteger();
final AtomicInteger highWaterMarkCounter = new AtomicInteger();
boolean inWriteNowLoop;
boolean writeSuspended;
MessageEvent currentWriteEvent;
SendBuffer currentWriteBuffer;
final SctpNotificationHandler notificationHandler = new SctpNotificationHandler(this);
public SctpChannelImpl(Channel parent, ChannelFactory factory, ChannelPipeline pipeline, ChannelSink sink,
com.sun.nio.sctp.SctpChannel channel, SctpWorker worker) {
super(parent, factory, pipeline, sink);
super(parent, factory, pipeline, sink, worker, new SctpJdkChannel(channel));
this.channel = channel;
this.worker = worker;
config = new DefaultNioSctpChannelConfig(channel);
getCloseFuture().addListener(new ChannelFutureListener() {
@ -90,31 +64,76 @@ class SctpChannelImpl extends AbstractChannel implements SctpChannel {
});
}
Queue<MessageEvent> getWriteBufferQueue() {
return writeBufferQueue;
}
Object getWriteLock() {
return writeLock;
}
Object getInterestedOpsLock() {
return interestOpsLock;
}
void setWriteSuspended(boolean writeSuspended) {
this.writeSuspended = writeSuspended;
}
boolean getWriteSuspended() {
return writeSuspended;
}
void setInWriteNowLoop(boolean inWriteNowLoop) {
this.inWriteNowLoop = inWriteNowLoop;
}
MessageEvent getCurrentWriteEvent() {
return currentWriteEvent;
}
void setCurrentWriteEvent(MessageEvent currentWriteEvent) {
this.currentWriteEvent = currentWriteEvent;
}
int getRawInterestOps() {
return super.getInterestOps();
}
void setRawInterestOpsNow(int interestOps) {
super.setInterestOpsNow(interestOps);
}
SctpSendBuffer getCurrentWriteBuffer() {
return (SctpSendBuffer) currentWriteBuffer;
}
void setCurrentWriteBuffer(SctpSendBuffer currentWriteBuffer) {
this.currentWriteBuffer = currentWriteBuffer;
}
@Override
public SctpWorker getWorker() {
return (SctpWorker) super.getWorker();
}
@Override
public NioSctpChannelConfig getConfig() {
return config;
}
@Override
public InetSocketAddress getLocalAddress() {
InetSocketAddress localAddress = this.localAddress;
if (localAddress == null) {
try {
final Iterator<SocketAddress> iterator = channel.getAllLocalAddresses().iterator();
if (iterator.hasNext()) {
this.localAddress = localAddress = (InetSocketAddress) iterator.next();
}
} catch (Throwable t) {
return null;
}
}
return localAddress;
public SctpJdkChannel getJdkChannel() {
return (SctpJdkChannel) super.getJdkChannel();
}
@Override
public Set<InetSocketAddress> getAllLocalAddresses() {
try {
final Set<SocketAddress> allLocalAddresses = channel.getAllLocalAddresses();
final Set<SocketAddress> allLocalAddresses = getJdkChannel().getChannel().getAllLocalAddresses();
final Set<InetSocketAddress> addresses = new HashSet<InetSocketAddress>(allLocalAddresses.size());
for (SocketAddress socketAddress: allLocalAddresses) {
addresses.add((InetSocketAddress) socketAddress);
@ -125,26 +144,10 @@ class SctpChannelImpl extends AbstractChannel implements SctpChannel {
}
}
@Override
public InetSocketAddress getRemoteAddress() {
InetSocketAddress remoteAddress = this.remoteAddress;
if (remoteAddress == null) {
try {
final Iterator<SocketAddress> iterator = channel.getRemoteAddresses().iterator();
if (iterator.hasNext()) {
this.remoteAddress = remoteAddress = (InetSocketAddress) iterator.next();
}
} catch (Throwable t) {
return null;
}
}
return remoteAddress;
}
@Override
public Set<InetSocketAddress> getAllRemoteAddresses() {
try {
final Set<SocketAddress> allLocalAddresses = channel.getRemoteAddresses();
final Set<SocketAddress> allLocalAddresses = getJdkChannel().getChannel().getRemoteAddresses();
final Set<InetSocketAddress> addresses = new HashSet<InetSocketAddress>(allLocalAddresses.size());
for (SocketAddress socketAddress: allLocalAddresses) {
addresses.add((InetSocketAddress) socketAddress);
@ -172,7 +175,7 @@ class SctpChannelImpl extends AbstractChannel implements SctpChannel {
@Override
public Association association() {
try {
return channel.association();
return getJdkChannel().getChannel().association();
} catch (Throwable e) {
return null;
}
@ -198,7 +201,7 @@ class SctpChannelImpl extends AbstractChannel implements SctpChannel {
state = ST_BOUND;
}
final void setConnected() {
protected final void setConnected() {
if (state != ST_CLOSED) {
state = ST_CONNECTED;
}
@ -208,126 +211,20 @@ class SctpChannelImpl extends AbstractChannel implements SctpChannel {
protected boolean setClosed() {
return super.setClosed();
}
@Override
public int getInterestOps() {
if (!isOpen()) {
return Channel.OP_WRITE;
}
int interestOps = getRawInterestOps();
int writeBufferSize = this.writeBufferSize.get();
if (writeBufferSize != 0) {
if (highWaterMarkCounter.get() > 0) {
int lowWaterMark = getConfig().getWriteBufferLowWaterMark();
if (writeBufferSize >= lowWaterMark) {
interestOps |= Channel.OP_WRITE;
} else {
interestOps &= ~Channel.OP_WRITE;
}
} else {
int highWaterMark = getConfig().getWriteBufferHighWaterMark();
if (writeBufferSize >= highWaterMark) {
interestOps |= Channel.OP_WRITE;
} else {
interestOps &= ~Channel.OP_WRITE;
protected WriteRequestQueue createRequestQueue() {
return new WriteRequestQueue() {
@Override
protected int getMessageSize(MessageEvent e) {
Object m = e.getMessage();
if (m instanceof SctpFrame) {
return ((SctpFrame) m).getPayloadBuffer().readableBytes();
}
return 0;
}
} else {
interestOps &= ~Channel.OP_WRITE;
}
return interestOps;
};
}
int getRawInterestOps() {
return super.getInterestOps();
}
void setRawInterestOpsNow(int interestOps) {
super.setInterestOpsNow(interestOps);
}
@Override
public ChannelFuture write(Object message, SocketAddress remoteAddress) {
if (remoteAddress == null || remoteAddress.equals(getRemoteAddress())) {
return super.write(message, null);
} else {
return getUnsupportedOperationFuture();
}
}
private final class WriteRequestQueue extends AbstractWriteRequestQueue {
private final ThreadLocalBoolean notifying = new ThreadLocalBoolean();
WriteRequestQueue() {
super();
}
@Override
public boolean offer(MessageEvent e) {
boolean success = queue.offer(e);
assert success;
int messageSize = getMessageSize(e);
int newWriteBufferSize = writeBufferSize.addAndGet(messageSize);
int highWaterMark = getConfig().getWriteBufferHighWaterMark();
if (newWriteBufferSize >= highWaterMark) {
if (newWriteBufferSize - messageSize < highWaterMark) {
highWaterMarkCounter.incrementAndGet();
if (!notifying.get()) {
notifying.set(Boolean.TRUE);
fireChannelInterestChanged(SctpChannelImpl.this);
notifying.set(Boolean.FALSE);
}
}
}
return true;
}
@Override
public MessageEvent poll() {
MessageEvent e = queue.poll();
if (e != null) {
int messageSize = getMessageSize(e);
int newWriteBufferSize = writeBufferSize.addAndGet(-messageSize);
int lowWaterMark = getConfig().getWriteBufferLowWaterMark();
if (newWriteBufferSize == 0 || newWriteBufferSize < lowWaterMark) {
if (newWriteBufferSize + messageSize >= lowWaterMark) {
highWaterMarkCounter.decrementAndGet();
if (isConnected() && !notifying.get()) {
notifying.set(Boolean.TRUE);
fireChannelInterestChanged(SctpChannelImpl.this);
notifying.set(Boolean.FALSE);
}
}
}
}
return e;
}
private int getMessageSize(MessageEvent e) {
Object m = e.getMessage();
if (m instanceof SctpFrame) {
return ((SctpFrame) m).getPayloadBuffer().readableBytes();
}
return 0;
}
}
private final class WriteTask implements Runnable {
WriteTask() {
super();
}
@Override
public void run() {
writeTaskInTaskQueue.set(false);
worker.writeFromTaskLoop(SctpChannelImpl.this);
}
}
}

364
transport-sctp/src/main/java/io/netty/channel/sctp/SctpClientPipelineSink.java
View File

@ -15,56 +15,25 @@
*/
package io.netty.channel.sctp;
import static io.netty.channel.Channels.*;
import java.io.IOException;
import java.net.ConnectException;
import java.net.InetAddress;
import java.net.SocketAddress;
import java.nio.channels.ClosedChannelException;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.util.Iterator;
import java.util.Queue;
import java.util.Set;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import static io.netty.channel.Channels.fireChannelBound;
import static io.netty.channel.Channels.fireExceptionCaught;
import static io.netty.channel.Channels.succeededFuture;
import io.netty.channel.ChannelEvent;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelState;
import io.netty.channel.ChannelStateEvent;
import io.netty.channel.MessageEvent;
import io.netty.logging.InternalLogger;
import io.netty.logging.InternalLoggerFactory;
import io.netty.util.internal.DeadLockProofWorker;
import io.netty.util.internal.QueueFactory;
import io.netty.channel.socket.nio.AbstractNioChannelSink;
import java.net.InetAddress;
import java.net.SocketAddress;
import java.nio.channels.ClosedChannelException;
/**
*/
class SctpClientPipelineSink extends AbstractSctpChannelSink {
static final InternalLogger logger =
InternalLoggerFactory.getInstance(SctpClientPipelineSink.class);
final Executor bossExecutor;
private final Boss boss = new Boss();
private final SctpWorker[] workers;
private final AtomicInteger workerIndex = new AtomicInteger();
SctpClientPipelineSink(
Executor bossExecutor, Executor workerExecutor, int workerCount) {
this.bossExecutor = bossExecutor;
workers = new SctpWorker[workerCount];
for (int i = 0; i < workers.length; i ++) {
workers[i] = new SctpWorker(workerExecutor);
}
}
class SctpClientPipelineSink extends AbstractNioChannelSink {
@Override
public void eventSunk(
@ -80,21 +49,21 @@ class SctpClientPipelineSink extends AbstractSctpChannelSink {
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
channel.worker.close(channel, future);
channel.getWorker().close(channel, future);
}
break;
case BOUND:
if (value != null) {
bind(channel, future, (SocketAddress) value);
} else {
channel.worker.close(channel, future);
channel.getWorker().close(channel, future);
}
break;
case CONNECTED:
if (value != null) {
connect(channel, future, (SocketAddress) value);
} else {
channel.worker.close(channel, future);
channel.getWorker().close(channel, future);
}
break;
case INTEREST_OPS:
@ -105,16 +74,16 @@ class SctpClientPipelineSink extends AbstractSctpChannelSink {
SctpUnbindAddressEvent unbindAddressEvent = (SctpUnbindAddressEvent) event;
unbindAddress(channel, unbindAddressEvent.getFuture(), unbindAddressEvent.getValue());
} else {
channel.worker.setInterestOps(channel, future, ((Integer) value).intValue());
channel.getWorker().setInterestOps(channel, future, ((Integer) value).intValue());
}
break;
}
} else if (e instanceof MessageEvent) {
MessageEvent event = (MessageEvent) e;
SctpChannelImpl channel = (SctpChannelImpl) event.getChannel();
boolean offered = channel.writeBuffer.offer(event);
boolean offered = channel.getWriteBufferQueue().offer(event);
assert offered;
channel.worker.writeFromUserCode(channel);
channel.getWorker().writeFromUserCode(channel);
}
}
@ -122,7 +91,7 @@ class SctpClientPipelineSink extends AbstractSctpChannelSink {
SctpClientChannel channel, ChannelFuture future,
SocketAddress localAddress) {
try {
channel.channel.bind(localAddress);
channel.getJdkChannel().bind(localAddress);
channel.boundManually = true;
channel.setBound();
future.setSuccess();
@ -137,7 +106,7 @@ class SctpClientPipelineSink extends AbstractSctpChannelSink {
SctpClientChannel channel, ChannelFuture future,
InetAddress localAddress) {
try {
channel.channel.bindAddress(localAddress);
channel.getJdkChannel().getChannel().bindAddress(localAddress);
future.setSuccess();
} catch (Throwable t) {
future.setFailure(t);
@ -149,7 +118,7 @@ class SctpClientPipelineSink extends AbstractSctpChannelSink {
SctpClientChannel channel, ChannelFuture future,
InetAddress localAddress) {
try {
channel.channel.unbindAddress(localAddress);
channel.getJdkChannel().getChannel().unbindAddress(localAddress);
future.setSuccess();
} catch (Throwable t) {
future.setFailure(t);
@ -163,293 +132,28 @@ class SctpClientPipelineSink extends AbstractSctpChannelSink {
final SctpClientChannel channel, final ChannelFuture cf,
SocketAddress remoteAddress) {
try {
if (channel.channel.connect(remoteAddress)) {
channel.worker.register(channel, cf);
} else {
channel.getCloseFuture().addListener(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture f)
throws Exception {
if (!cf.isDone()) {
cf.setFailure(new ClosedChannelException());
}
channel.getJdkChannel().connect(remoteAddress);
channel.getCloseFuture().addListener(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture f)
throws Exception {
if (!cf.isDone()) {
cf.setFailure(new ClosedChannelException());
}
});
cf.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
channel.connectFuture = cf;
boss.register(channel);
}
}
});
cf.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
channel.connectFuture = cf;
channel.getWorker().registerWithWorker(channel, cf);
} catch (Throwable t) {
cf.setFailure(t);
fireExceptionCaught(channel, t);
channel.worker.close(channel, succeededFuture(channel));
channel.getWorker().close(channel, succeededFuture(channel));
}
}
SctpWorker nextWorker() {
return workers[Math.abs(
workerIndex.getAndIncrement() % workers.length)];
}
private final class Boss implements Runnable {
volatile Selector selector;
private boolean started;
private final AtomicBoolean wakenUp = new AtomicBoolean();
private final Object startStopLock = new Object();
private final Queue<Runnable> registerTaskQueue = QueueFactory.createQueue(Runnable.class);
Boss() {
super();
}
void register(SctpClientChannel channel) {
Runnable registerTask = new RegisterTask(this, channel);
Selector selector;
synchronized (startStopLock) {
if (!started) {
// Open a selector if this worker didn't start yet.
try {
this.selector = selector = Selector.open();
} catch (Throwable t) {
throw new ChannelException(
"Failed to create a selector.", t);
}
// Start the worker thread with the new Selector.
boolean success = false;
try {
DeadLockProofWorker.start(bossExecutor, this);
success = true;
} finally {
if (!success) {
// Release the Selector if the execution fails.
try {
selector.close();
} catch (Throwable t) {
logger.warn("Failed to close a selector.", t);
}
this.selector = selector = null;
// The method will return to the caller at this point.
}
}
} else {
// Use the existing selector if this worker has been started.
selector = this.selector;
}
assert selector != null && selector.isOpen();
started = true;
boolean offered = registerTaskQueue.offer(registerTask);
assert offered;
}
if (wakenUp.compareAndSet(false, true)) {
selector.wakeup();
}
}
@Override
public void run() {
boolean shutdown = false;
Selector selector = this.selector;
long lastConnectTimeoutCheckTimeNanos = System.nanoTime();
for (;;) {
wakenUp.set(false);
try {
int selectedKeyCount = selector.select(10);
// 'wakenUp.compareAndSet(false, true)' is always evaluated
// before calling 'selector.wakeup()' to reduce the wake-up
// overhead. (Selector.wakeup() is an expensive operation.)
//
// However, there is a race condition in this approach.
// The race condition is triggered when 'wakenUp' is set to
// true too early.
//
// 'wakenUp' is set to true too early if:
// 1) Selector is waken up between 'wakenUp.set(false)' and
// 'selector.select(...)'. (BAD)
// 2) Selector is waken up between 'selector.select(...)' and
// 'if (wakenUp.get()) { ... }'. (OK)
//
// In the first case, 'wakenUp' is set to true and the
// following 'selector.select(...)' will wake up immediately.
// Until 'wakenUp' is set to false again in the next round,
// 'wakenUp.compareAndSet(false, true)' will fail, and therefore
// any attempt to wake up the Selector will fail, too, causing
// the following 'selector.select(...)' call to block
// unnecessarily.
//
// To fix this problem, we wake up the selector again if wakenUp
// is true immediately after selector.select(...).
// It is inefficient in that it wakes up the selector for both
// the first case (BAD - wake-up required) and the second case
// (OK - no wake-up required).
if (wakenUp.get()) {
selector.wakeup();
}
processRegisterTaskQueue();
if (selectedKeyCount > 0) {
processSelectedKeys(selector.selectedKeys());
}
// Handle connection timeout every 10 milliseconds approximately.
long currentTimeNanos = System.nanoTime();
if (currentTimeNanos - lastConnectTimeoutCheckTimeNanos >= 10 * 1000000L) {
lastConnectTimeoutCheckTimeNanos = currentTimeNanos;
processConnectTimeout(selector.keys(), currentTimeNanos);
}
// Exit the loop when there's nothing to handle.
// The shutdown flag is used to delay the shutdown of this
// loop to avoid excessive Selector creation when
// connection attempts are made in a one-by-one manner
// instead of concurrent manner.
if (selector.keys().isEmpty()) {
if (shutdown ||
bossExecutor instanceof ExecutorService && ((ExecutorService) bossExecutor).isShutdown()) {
synchronized (startStopLock) {
if (registerTaskQueue.isEmpty() && selector.keys().isEmpty()) {
started = false;
try {
selector.close();
} catch (IOException e) {
if (logger.isWarnEnabled()) {
logger.warn(
"Failed to close a selector.", e);
}
} finally {
this.selector = null;
}
break;
} else {
shutdown = false;
}
}
} else {
// Give one more second.
shutdown = true;
}
} else {
shutdown = false;
}
} catch (Throwable t) {
if (logger.isWarnEnabled()) {
logger.warn(
"Unexpected exception in the selector loop.", t);
}
// Prevent possible consecutive immediate failures.
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// Ignore.
}
}
}
}
private void processRegisterTaskQueue() {
for (;;) {
final Runnable task = registerTaskQueue.poll();
if (task == null) {
break;
}
task.run();
}
}
private void processSelectedKeys(Set<SelectionKey> selectedKeys) {
for (Iterator<SelectionKey> i = selectedKeys.iterator(); i.hasNext();) {
SelectionKey k = i.next();
i.remove();
if (!k.isValid()) {
close(k);
continue;
}
if (k.isConnectable()) {
connect(k);
}
}
}
private void processConnectTimeout(Set<SelectionKey> keys, long currentTimeNanos) {
ConnectException cause = null;
for (SelectionKey k: keys) {
if (!k.isValid()) {
continue;
}
SctpClientChannel ch = (SctpClientChannel) k.attachment();
if (ch.connectDeadlineNanos > 0 &&
currentTimeNanos >= ch.connectDeadlineNanos) {
if (cause == null) {
cause = new ConnectException("connection timed out");
}
ch.connectFuture.setFailure(cause);
fireExceptionCaught(ch, cause);
ch.worker.close(ch, succeededFuture(ch));
}
}
}
private void connect(SelectionKey k) {
SctpClientChannel ch = (SctpClientChannel) k.attachment();
try {
if (ch.channel.finishConnect()) {
k.cancel();
ch.worker.register(ch, ch.connectFuture);
}
} catch (Throwable t) {
ch.connectFuture.setFailure(t);
fireExceptionCaught(ch, t);
k.cancel(); // Some JDK implementations run into an infinite loop without this.
ch.worker.close(ch, succeededFuture(ch));
}
}
private void close(SelectionKey k) {
SctpClientChannel ch = (SctpClientChannel) k.attachment();
ch.worker.close(ch, succeededFuture(ch));
}
}
private static final class RegisterTask implements Runnable {
private final Boss boss;
private final SctpClientChannel channel;
RegisterTask(Boss boss, SctpClientChannel channel) {
this.boss = boss;
this.channel = channel;
}
@Override
public void run() {
try {
channel.channel.register(
boss.selector, SelectionKey.OP_CONNECT, channel);
} catch (ClosedChannelException e) {
channel.worker.close(channel, succeededFuture(channel));
}
int connectTimeout = channel.getConfig().getConnectTimeoutMillis();
if (connectTimeout > 0) {
channel.connectDeadlineNanos = System.nanoTime() + connectTimeout * 1000000L;
}
}
}
}

54
transport-sctp/src/main/java/io/netty/channel/sctp/SctpClientSocketChannelFactory.java
View File

@ -17,7 +17,10 @@ package io.netty.channel.sctp;
import io.netty.channel.ChannelFactory;
import io.netty.channel.ChannelPipeline;
import io.netty.util.internal.ExecutorUtil;
import io.netty.channel.ChannelSink;
import io.netty.channel.socket.nio.SelectorUtil;
import io.netty.channel.socket.nio.WorkerPool;
import io.netty.util.ExternalResourceReleasable;
import java.util.concurrent.Executor;
@ -74,9 +77,8 @@ import java.util.concurrent.Executor;
*/
public class SctpClientSocketChannelFactory implements ChannelFactory {
private final Executor bossExecutor;
private final Executor workerExecutor;
private final SctpClientPipelineSink sink;
private final WorkerPool<SctpWorker> workerPool;
private final ChannelSink sink;
/**
* Creates a new instance. Calling this constructor is same with calling
@ -84,53 +86,45 @@ public class SctpClientSocketChannelFactory implements ChannelFactory {
* the number of available processors in the machine. The number of
* available processors is obtained by {@link Runtime#availableProcessors()}.
*
* @param bossExecutor
* the {@link java.util.concurrent.Executor} which will execute the boss thread
* @param workerExecutor
* the {@link java.util.concurrent.Executor} which will execute the I/O worker threads
*/
public SctpClientSocketChannelFactory(
Executor bossExecutor, Executor workerExecutor) {
this(bossExecutor, workerExecutor, SelectorUtil.DEFAULT_IO_THREADS);
public SctpClientSocketChannelFactory(Executor workerExecutor) {
this(workerExecutor, SelectorUtil.DEFAULT_IO_THREADS);
}
/**
* Creates a new instance.
*
* @param bossExecutor
* the {@link java.util.concurrent.Executor} which will execute the boss thread
*
* @param workerExecutor
* the {@link java.util.concurrent.Executor} which will execute the I/O worker threads
* @param workerCount
* the maximum number of I/O worker threads
*/
public SctpClientSocketChannelFactory(
Executor bossExecutor, Executor workerExecutor,
public SctpClientSocketChannelFactory(Executor workerExecutor,
int workerCount) {
if (bossExecutor == null) {
throw new NullPointerException("bossExecutor");
this(new SctpWorkerPool(workerExecutor, workerCount, true));
}
public SctpClientSocketChannelFactory(WorkerPool<SctpWorker> workerPool) {
if (workerPool == null) {
throw new NullPointerException("workerPool");
}
if (workerExecutor == null) {
throw new NullPointerException("workerExecutor");
}
if (workerCount <= 0) {
throw new IllegalArgumentException(
"workerCount (" + workerCount + ") " +
"must be a positive integer.");
}
this.bossExecutor = bossExecutor;
this.workerExecutor = workerExecutor;
sink = new SctpClientPipelineSink(bossExecutor, workerExecutor, workerCount);
this.workerPool = workerPool;
sink = new SctpClientPipelineSink();
}
@Override
public SctpChannel newChannel(ChannelPipeline pipeline) {
return new SctpClientChannel(this, pipeline, sink, sink.nextWorker());
return new SctpClientChannel(this, pipeline, sink, workerPool.nextWorker());
}
@Override
public void releaseExternalResources() {
ExecutorUtil.terminate(bossExecutor, workerExecutor);
if (workerPool instanceof ExternalResourceReleasable) {
((ExternalResourceReleasable) workerPool).releaseExternalResources();
}
}
}

109
transport-sctp/src/main/java/io/netty/channel/sctp/SctpJdkChannel.java Normal file
View File

@ -0,0 +1,109 @@
/*
* Copyright 2011 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.sctp;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.nio.ByteBuffer;
import com.sun.nio.sctp.SctpChannel;
import io.netty.channel.socket.nio.AbstractJdkChannel;
public class SctpJdkChannel extends AbstractJdkChannel {
SctpJdkChannel(SctpChannel channel) {
super(channel);
}
@Override
protected SctpChannel getChannel() {
return (SctpChannel) super.getChannel();
}
@Override
public InetSocketAddress getRemoteSocketAddress() {
try {
for (SocketAddress address : getChannel().getRemoteAddresses()) {
return (InetSocketAddress) address;
}
} catch (IOException e) {
// ignore
}
return null;
}
@Override
public SocketAddress getLocalSocketAddress() {
try {
for (SocketAddress address : getChannel().getAllLocalAddresses()) {
return (InetSocketAddress) address;
}
} catch (IOException e) {
// ignore
}
return null;
}
@Override
public boolean isConnected() {
return getChannel().isOpen();
}
@Override
public boolean isSocketBound() {
try {
return !getChannel().getAllLocalAddresses().isEmpty();
} catch (IOException e) {
return false;
}
}
@Override
public void disconnectSocket() throws IOException {
closeSocket();
}
@Override
public void closeSocket() throws IOException {
for (SocketAddress address: getChannel().getAllLocalAddresses()) {
getChannel().unbindAddress(((InetSocketAddress) address).getAddress());
}
}
@Override
public void bind(SocketAddress local) throws IOException {
getChannel().bind(local);
}
@Override
public void connect(SocketAddress remote) throws IOException {
getChannel().connect(remote);
}
@Override
public int write(ByteBuffer src) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public boolean finishConnect() throws IOException {
return getChannel().finishConnect();
}
}

2
transport-sctp/src/main/java/io/netty/channel/sctp/SctpNotificationHandler.java
View File

@ -59,7 +59,7 @@ class SctpNotificationHandler extends AbstractNotificationHandler<Object> {
@Override
public HandlerResult handleNotification(ShutdownNotification notification, Object o) {
sctpChannel.worker.close(sctpChannel, Channels.succeededFuture(sctpChannel));
sctpChannel.getWorker().close(sctpChannel, Channels.succeededFuture(sctpChannel));
return HandlerResult.RETURN;
}

449
transport-sctp/src/main/java/io/netty/channel/sctp/SctpProviderMetadata.java
View File

@ -1,449 +0,0 @@
/*
* Copyright 2011 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.sctp;
import com.sun.nio.sctp.SctpServerChannel;
import io.netty.logging.InternalLogger;
import io.netty.logging.InternalLoggerFactory;
import io.netty.util.internal.SystemPropertyUtil;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.spi.SelectorProvider;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Provides information which is specific to a NIO service provider
* implementation.
*/
final class SctpProviderMetadata {
static final InternalLogger logger =
InternalLoggerFactory.getInstance(SctpProviderMetadata.class);
private static final String CONSTRAINT_LEVEL_PROPERTY =
"io.netty.channel.sctp.constraintLevel";
/**
* 0 - no need to wake up to get / set interestOps (most cases)
* 1 - no need to wake up to get interestOps, but need to wake up to set.
* 2 - need to wake up to get / set interestOps (old providers)
*/
static final int CONSTRAINT_LEVEL;
static {
int constraintLevel = -1;
// Use the system property if possible.
constraintLevel = SystemPropertyUtil.get(CONSTRAINT_LEVEL_PROPERTY, -1);
if (constraintLevel < 0 || constraintLevel > 2) {
constraintLevel = -1;
}
if (constraintLevel >= 0) {
if (logger.isDebugEnabled()) {
logger.debug(
"Setting the NIO constraint level to: " + constraintLevel);
}
}
if (constraintLevel < 0) {
constraintLevel = detectConstraintLevelFromSystemProperties();
if (constraintLevel < 0) {
constraintLevel = 2;
if (logger.isDebugEnabled()) {
logger.debug(
"Couldn't determine the NIO constraint level from " +
"the system properties; using the safest level (2)");
}
} else if (constraintLevel != 0) {
if (logger.isInfoEnabled()) {
logger.info(
"Using the autodetected NIO constraint level: " +
constraintLevel +
" (Use better NIO provider for better performance)");
}
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"Using the autodetected NIO constraint level: " +
constraintLevel);
}
}
}
CONSTRAINT_LEVEL = constraintLevel;
if (CONSTRAINT_LEVEL < 0 || CONSTRAINT_LEVEL > 2) {
throw new Error(
"Unexpected NIO constraint level: " +
CONSTRAINT_LEVEL + ", please report this error.");
}
}
private static int detectConstraintLevelFromSystemProperties() {
String version = SystemPropertyUtil.get("java.specification.version");
String vminfo = SystemPropertyUtil.get("java.vm.info", "");
String os = SystemPropertyUtil.get("os.name");
String vendor = SystemPropertyUtil.get("java.vm.vendor");
String provider;
try {
provider = SelectorProvider.provider().getClass().getName();
} catch (Exception e) {
// Perhaps security exception.
provider = null;
}
if (version == null || os == null || vendor == null || provider == null) {
return -1;
}
os = os.toLowerCase();
vendor = vendor.toLowerCase();
// System.out.println(version);
// System.out.println(vminfo);
// System.out.println(os);
// System.out.println(vendor);
// System.out.println(provider);
// Sun JVM
if (vendor.indexOf("sun") >= 0) {
// Linux
if (os.indexOf("linux") >= 0) {
if (provider.equals("sun.nio.ch.EPollSelectorProvider") ||
provider.equals("sun.nio.ch.PollSelectorProvider")) {
return 0;
}
// Windows
} else if (os.indexOf("windows") >= 0) {
if (provider.equals("sun.nio.ch.WindowsSelectorProvider")) {
return 0;
}
// Solaris
} else if (os.indexOf("sun") >= 0 || os.indexOf("solaris") >= 0) {
if (provider.equals("sun.nio.ch.DevPollSelectorProvider")) {
return 0;
}
}
// Apple JVM
} else if (vendor.indexOf("apple") >= 0) {
// Mac OS
if (os.indexOf("mac") >= 0 && os.indexOf("os") >= 0) {
if (provider.equals("sun.nio.ch.KQueueSelectorProvider")) {
return 0;
}
}
// IBM
} else if (vendor.indexOf("ibm") >= 0) {
// Linux or AIX
if (os.indexOf("linux") >= 0 || os.indexOf("aix") >= 0) {
if (version.equals("1.5") || version.matches("^1\\.5\\D.*$")) {
if (provider.equals("sun.nio.ch.PollSelectorProvider")) {
return 1;
}
} else if (version.equals("1.6") || version.matches("^1\\.6\\D.*$")) {
// IBM JDK 1.6 has different constraint level for different
// version. The exact version can be determined only by its
// build date.
Pattern datePattern = Pattern.compile(
"(?:^|[^0-9])(" +
"[2-9][0-9]{3}" + // year
"(?:0[1-9]|1[0-2])" + // month
"(?:0[1-9]|[12][0-9]|3[01])" + // day of month
")(?:$|[^0-9])");
Matcher dateMatcher = datePattern.matcher(vminfo);
if (dateMatcher.find()) {
long dateValue = Long.parseLong(dateMatcher.group(1));
if (dateValue < 20081105L) {
// SR0, 1, and 2
return 2;
} else {
// SR3 and later
if (provider.equals("sun.nio.ch.EPollSelectorProvider")) {
return 0;
} else if (provider.equals("sun.nio.ch.PollSelectorProvider")) {
return 1;
}
}
}
}
}
// BEA
} else if (vendor.indexOf("bea") >= 0 || vendor.indexOf("oracle") >= 0) {
// Linux
if (os.indexOf("linux") >= 0) {
if (provider.equals("sun.nio.ch.EPollSelectorProvider") ||
provider.equals("sun.nio.ch.PollSelectorProvider")) {
return 0;
}
// Windows
} else if (os.indexOf("windows") >= 0) {
if (provider.equals("sun.nio.ch.WindowsSelectorProvider")) {
return 0;
}
}
// Apache Software Foundation
} else if (vendor.indexOf("apache") >= 0) {
if (provider.equals("org.apache.harmony.nio.internal.SelectorProviderImpl")) {
return 1;
}
}
// Others (untested)
return -1;
}
private static final class ConstraintLevelAutodetector {
ConstraintLevelAutodetector() {
super();
}
int autodetect() {
final int constraintLevel;
ExecutorService executor = Executors.newCachedThreadPool();
boolean success;
long startTime;
int interestOps;
SctpServerChannel ch = null;
SelectorLoop loop = null;
try {
// Open a channel.
ch = com.sun.nio.sctp.SctpServerChannel.open();
// Configure the channel
try {
ch.bind(new InetSocketAddress(0));
ch.configureBlocking(false);
} catch (Throwable e) {
if (logger.isWarnEnabled()) {
logger.warn("Failed to configure a temporary socket.", e);
}
return -1;
}
// Prepare the selector loop.
try {
loop = new SelectorLoop();
} catch (Throwable e) {
if (logger.isWarnEnabled()) {
logger.warn("Failed to open a temporary selector.", e);
}
return -1;
}
// Register the channel
try {
ch.register(loop.selector, 0);
} catch (Throwable e) {
if (logger.isWarnEnabled()) {
logger.warn("Failed to register a temporary selector.", e);
}
return -1;
}
SelectionKey key = ch.keyFor(loop.selector);
// Start the selector loop.
executor.execute(loop);
// Level 0
success = true;
for (int i = 0; i < 10; i ++) {
// Increase the probability of calling interestOps
// while select() is running.
do {
while (!loop.selecting) {
Thread.yield();
}
// Wait a little bit more.
try {
Thread.sleep(50);
} catch (InterruptedException e) {
// Ignore
}
} while (!loop.selecting);
startTime = System.nanoTime();
key.interestOps(key.interestOps() | SelectionKey.OP_ACCEPT);
key.interestOps(key.interestOps() & ~SelectionKey.OP_ACCEPT);
if (System.nanoTime() - startTime >= 500000000L) {
success = false;
break;
}
}
if (success) {
constraintLevel = 0;
} else {
// Level 1
success = true;
for (int i = 0; i < 10; i ++) {
// Increase the probability of calling interestOps
// while select() is running.
do {
while (!loop.selecting) {
Thread.yield();
}
// Wait a little bit more.
try {
Thread.sleep(50);
} catch (InterruptedException e) {
// Ignore
}
} while (!loop.selecting);
startTime = System.nanoTime();
interestOps = key.interestOps();
synchronized (loop) {
loop.selector.wakeup();
key.interestOps(interestOps | SelectionKey.OP_ACCEPT);
key.interestOps(interestOps & ~SelectionKey.OP_ACCEPT);
}
if (System.nanoTime() - startTime >= 500000000L) {
success = false;
break;
}
}
if (success) {
constraintLevel = 1;
} else {
constraintLevel = 2;
}
}
} catch (Throwable e) {
return -1;
} finally {
if (ch != null) {
try {
ch.close();
} catch (Throwable e) {
if (logger.isWarnEnabled()) {
logger.warn("Failed to close a temporary socket.", e);
}
}
}
if (loop != null) {
loop.done = true;
try {
executor.shutdownNow();
} catch (NullPointerException ex) {
// Some JDK throws NPE here, but shouldn't.
}
try {
for (;;) {
loop.selector.wakeup();
try {
if (executor.awaitTermination(1, TimeUnit.SECONDS)) {
break;
}
} catch (InterruptedException e) {
// Ignore
}
}
} catch (Throwable e) {
// Perhaps security exception.
}
try {
loop.selector.close();
} catch (Throwable e) {
if (logger.isWarnEnabled()) {
logger.warn("Failed to close a temporary selector.", e);
}
}
}
}
return constraintLevel;
}
}
private static final class SelectorLoop implements Runnable {
final Selector selector;
volatile boolean done;
volatile boolean selecting; // Just an approximation
SelectorLoop() throws IOException {
selector = Selector.open();
}
@Override
public void run() {
while (!done) {
synchronized (this) {
// Guard
}
try {
selecting = true;
try {
selector.select(1000);
} finally {
selecting = false;
}
Set<SelectionKey> keys = selector.selectedKeys();
for (SelectionKey k: keys) {
k.interestOps(0);
}
keys.clear();
} catch (IOException e) {
if (logger.isWarnEnabled()) {
logger.warn("Failed to wait for a temporary selector.", e);
}
}
}
}
}
public static void main(String[] args) throws Exception {
for (Entry<Object, Object> e: System.getProperties().entrySet()) {
System.out.println(e.getKey() + ": " + e.getValue());
}
System.out.println();
System.out.println("Hard-coded Constraint Level: " + CONSTRAINT_LEVEL);
System.out.println(
"Auto-detected Constraint Level: " +
new ConstraintLevelAutodetector().autodetect());
}
private SctpProviderMetadata() {
// Unused
}
}

97
transport-sctp/src/main/java/io/netty/channel/sctp/SctpReceiveBufferPool.java
View File

@ -1,97 +0,0 @@
/*
* Copyright 2011 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.sctp;
import java.lang.ref.SoftReference;
import java.nio.ByteBuffer;
final class SctpReceiveBufferPool {
private static final int POOL_SIZE = 8;
@SuppressWarnings("unchecked")
private final SoftReference<ByteBuffer>[] pool = new SoftReference[POOL_SIZE];
SctpReceiveBufferPool() {
super();
}
ByteBuffer acquire(int size) {
final SoftReference<ByteBuffer>[] pool = this.pool;
for (int i = 0; i < POOL_SIZE; i ++) {
SoftReference<ByteBuffer> ref = pool[i];
if (ref == null) {
continue;
}
ByteBuffer buf = ref.get();
if (buf == null) {
pool[i] = null;
continue;
}
if (buf.capacity() < size) {
continue;
}
pool[i] = null;
buf.clear();
return buf;
}
ByteBuffer buf = ByteBuffer.allocateDirect(normalizeCapacity(size));
buf.clear();
return buf;
}
void release(ByteBuffer buffer) {
final SoftReference<ByteBuffer>[] pool = this.pool;
for (int i = 0; i < POOL_SIZE; i ++) {
SoftReference<ByteBuffer> ref = pool[i];
if (ref == null || ref.get() == null) {
pool[i] = new SoftReference<ByteBuffer>(buffer);
return;
}
}
// pool is full - replace one
final int capacity = buffer.capacity();
for (int i = 0; i < POOL_SIZE; i ++) {
SoftReference<ByteBuffer> ref = pool[i];
ByteBuffer pooled = ref.get();
if (pooled == null) {
pool[i] = null;
continue;
}
if (pooled.capacity() < capacity) {
pool[i] = new SoftReference<ByteBuffer>(buffer);
return;
}
}
}
private static int normalizeCapacity(int capacity) {
// Normalize to multiple of 1024
int q = capacity >>> 10;
int r = capacity & 1023;
if (r != 0) {
q ++;
}
return q << 10;
}
}

178
transport-sctp/src/main/java/io/netty/channel/sctp/SctpSendBufferPool.java
View File

@ -18,27 +18,21 @@ package io.netty.channel.sctp;
import com.sun.nio.sctp.MessageInfo;
import com.sun.nio.sctp.SctpChannel;
import io.netty.buffer.ChannelBuffer;
import io.netty.channel.socket.nio.SendBufferPool;
import java.io.IOException;
import java.lang.ref.SoftReference;
import java.net.SocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.DatagramChannel;
import java.nio.channels.WritableByteChannel;
final class SctpSendBufferPool {
final class SctpSendBufferPool extends SendBufferPool {
private static final SendBuffer EMPTY_BUFFER = new EmptySendBuffer();
private static final SctpSendBuffer EMPTY_BUFFER = new EmptySendBuffer();
private static final int DEFAULT_PREALLOCATION_SIZE = 65536;
private static final int ALIGN_SHIFT = 4;
private static final int ALIGN_MASK = 15;
PreallocationRef poolHead;
Preallocation current = new Preallocation(DEFAULT_PREALLOCATION_SIZE);
SctpSendBufferPool() {
super();
}
SendBuffer acquire(Object message) {
@Override
public SctpSendBuffer acquire(Object message) {
if (message instanceof SctpFrame) {
return acquire((SctpFrame) message);
} else {
@ -47,7 +41,7 @@ final class SctpSendBufferPool {
}
}
private SendBuffer acquire(SctpFrame message) {
private SctpSendBuffer acquire(SctpFrame message) {
final ChannelBuffer src = message.getPayloadBuffer();
final int streamNo = message.getStreamIdentifier();
final int protocolId = message.getProtocolIdentifier();
@ -58,16 +52,16 @@ final class SctpSendBufferPool {
}
if (src.isDirect()) {
return new UnpooledSendBuffer(streamNo, protocolId, src.toByteBuffer());
return new SctpUnpooledSendBuffer(streamNo, protocolId, src.toByteBuffer());
}
if (src.readableBytes() > DEFAULT_PREALLOCATION_SIZE) {
return new UnpooledSendBuffer(streamNo, protocolId, src.toByteBuffer());
return new SctpUnpooledSendBuffer(streamNo, protocolId, src.toByteBuffer());
}
Preallocation current = this.current;
ByteBuffer buffer = current.buffer;
int remaining = buffer.remaining();
PooledSendBuffer dst;
SctpPooledSendBuffer dst;
if (size < remaining) {
int nextPos = buffer.position() + size;
@ -75,7 +69,7 @@ final class SctpSendBufferPool {
buffer.position(align(nextPos));
slice.limit(nextPos);
current.refCnt++;
dst = new PooledSendBuffer(streamNo, protocolId, current, slice);
dst = new SctpPooledSendBuffer(streamNo, protocolId, current, slice);
} else if (size > remaining) {
this.current = current = getPreallocation();
buffer = current.buffer;
@ -83,11 +77,11 @@ final class SctpSendBufferPool {
buffer.position(align(size));
slice.limit(size);
current.refCnt++;
dst = new PooledSendBuffer(streamNo, protocolId, current, slice);
dst = new SctpPooledSendBuffer(streamNo, protocolId, current, slice);
} else { // size == remaining
current.refCnt++;
this.current = getPreallocation0();
dst = new PooledSendBuffer(streamNo, protocolId, current, current.buffer);
dst = new SctpPooledSendBuffer(streamNo, protocolId, current, current.buffer);
}
ByteBuffer dstbuf = dst.buffer;
@ -97,101 +91,22 @@ final class SctpSendBufferPool {
return dst;
}
private Preallocation getPreallocation() {
Preallocation current = this.current;
if (current.refCnt == 0) {
current.buffer.clear();
return current;
}
return getPreallocation0();
}
private Preallocation getPreallocation0() {
PreallocationRef ref = poolHead;
if (ref != null) {
do {
Preallocation p = ref.get();
ref = ref.next;
if (p != null) {
poolHead = ref;
return p;
}
} while (ref != null);
poolHead = ref;
}
return new Preallocation(DEFAULT_PREALLOCATION_SIZE);
}
private static int align(int pos) {
int q = pos >>> ALIGN_SHIFT;
int r = pos & ALIGN_MASK;
if (r != 0) {
q++;
}
return q << ALIGN_SHIFT;
}
private final class Preallocation {
final ByteBuffer buffer;
int refCnt;
Preallocation(int capacity) {
buffer = ByteBuffer.allocateDirect(capacity);
}
}
private final class PreallocationRef extends SoftReference<Preallocation> {
final PreallocationRef next;
PreallocationRef(Preallocation prealloation, PreallocationRef next) {
super(prealloation);
this.next = next;
}
}
interface SendBuffer {
boolean finished();
long writtenBytes();
long totalBytes();
interface SctpSendBuffer extends SendBuffer {
long transferTo(SctpChannel ch) throws IOException;
void release();
}
class UnpooledSendBuffer implements SendBuffer {
class SctpUnpooledSendBuffer extends UnpooledSendBuffer implements SctpSendBuffer {
final ByteBuffer buffer;
final int initialPos;
final int streamNo;
final int protocolId;
UnpooledSendBuffer(int streamNo, int protocolId, ByteBuffer buffer) {
SctpUnpooledSendBuffer(int streamNo, int protocolId, ByteBuffer buffer) {
super(buffer);
this.streamNo = streamNo;
this.protocolId = protocolId;
this.buffer = buffer;
initialPos = buffer.position();
}
@Override
public final boolean finished() {
return !buffer.hasRemaining();
}
@Override
public final long writtenBytes() {
return buffer.position() - initialPos;
}
@Override
public final long totalBytes() {
return buffer.limit() - initialPos;
}
@Override
@ -201,42 +116,17 @@ final class SctpSendBufferPool {
messageInfo.streamNumber(streamNo);
return ch.send(buffer, messageInfo);
}
@Override
public void release() {
// Unpooled.
}
}
final class PooledSendBuffer implements SendBuffer {
final class SctpPooledSendBuffer extends PooledSendBuffer implements SctpSendBuffer {
private final Preallocation parent;
final ByteBuffer buffer;
final int initialPos;
final int streamNo;
final int protocolId;
PooledSendBuffer(int streamNo, int protocolId, Preallocation parent, ByteBuffer buffer) {
SctpPooledSendBuffer(int streamNo, int protocolId, Preallocation parent, ByteBuffer buffer) {
super(parent, buffer);
this.streamNo = streamNo;
this.protocolId = protocolId;
this.parent = parent;
this.buffer = buffer;
initialPos = buffer.position();
}
@Override
public boolean finished() {
return !buffer.hasRemaining();
}
@Override
public long writtenBytes() {
return buffer.position() - initialPos;
}
@Override
public long totalBytes() {
return buffer.limit() - initialPos;
}
@Override
@ -246,20 +136,9 @@ final class SctpSendBufferPool {
messageInfo.streamNumber(streamNo);
return ch.send(buffer, messageInfo);
}
@Override
public void release() {
final Preallocation parent = this.parent;
if (--parent.refCnt == 0) {
parent.buffer.clear();
if (parent != current) {
poolHead = new PreallocationRef(parent, poolHead);
}
}
}
}
static final class EmptySendBuffer implements SendBuffer {
static final class EmptySendBuffer implements SctpSendBuffer {
EmptySendBuffer() {
super();
@ -285,6 +164,15 @@ final class SctpSendBufferPool {
return 0;
}
@Override
public long transferTo(WritableByteChannel ch) throws IOException {
return 0;
}
@Override
public long transferTo(DatagramChannel ch, SocketAddress raddr) throws IOException {
return 0;
}
@Override
public void release() {
// Unpooled.

14
transport-sctp/src/main/java/io/netty/channel/sctp/SctpServerChannelImpl.java
View File

@ -35,13 +35,14 @@ import io.netty.channel.ChannelFactory;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelSink;
import io.netty.channel.socket.nio.NioChannel;
import io.netty.logging.InternalLogger;
import io.netty.logging.InternalLoggerFactory;
/**
*/
class SctpServerChannelImpl extends AbstractServerChannel
implements SctpServerChannel {
implements SctpServerChannel, NioChannel {
private static final InternalLogger logger =
InternalLoggerFactory.getInstance(SctpServerChannelImpl.class);
@ -53,13 +54,15 @@ class SctpServerChannelImpl extends AbstractServerChannel
private volatile boolean bound;
private SctpWorker worker;
SctpServerChannelImpl(
ChannelFactory factory,
ChannelPipeline pipeline,
ChannelSink sink) {
ChannelSink sink, SctpWorker worker) {
super(factory, pipeline, sink);
this.worker = worker;
try {
serverChannel = com.sun.nio.sctp.SctpServerChannel.open();
} catch (IOException e) {
@ -153,4 +156,9 @@ class SctpServerChannelImpl extends AbstractServerChannel
protected boolean setClosed() {
return super.setClosed();
}
@Override
public SctpWorker getWorker() {
return worker;
}
}

212
transport-sctp/src/main/java/io/netty/channel/sctp/SctpServerPipelineSink.java
View File

@ -15,22 +15,8 @@
*/
package io.netty.channel.sctp;
import static io.netty.channel.Channels.*;
import java.io.IOException;
import java.net.InetAddress;
import java.net.SocketAddress;
import java.net.SocketTimeoutException;
import java.nio.channels.CancelledKeyException;
import java.nio.channels.ClosedChannelException;
import java.nio.channels.ClosedSelectorException;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.util.concurrent.Executor;
import java.util.concurrent.atomic.AtomicInteger;
import com.sun.nio.sctp.SctpChannel;
import static io.netty.channel.Channels.fireChannelBound;
import static io.netty.channel.Channels.fireExceptionCaught;
import io.netty.channel.Channel;
import io.netty.channel.ChannelEvent;
import io.netty.channel.ChannelFuture;
@ -38,25 +24,20 @@ import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelState;
import io.netty.channel.ChannelStateEvent;
import io.netty.channel.MessageEvent;
import io.netty.logging.InternalLogger;
import io.netty.logging.InternalLoggerFactory;
import io.netty.util.internal.DeadLockProofWorker;
import io.netty.channel.socket.nio.AbstractNioChannelSink;
import io.netty.channel.socket.nio.WorkerPool;
import java.net.InetAddress;
import java.net.SocketAddress;
/**
*/
class SctpServerPipelineSink extends AbstractSctpChannelSink {
class SctpServerPipelineSink extends AbstractNioChannelSink {
static final InternalLogger logger =
InternalLoggerFactory.getInstance(SctpServerPipelineSink.class);
private final WorkerPool<SctpWorker> workerPool;
private final SctpWorker[] workers;
private final AtomicInteger workerIndex = new AtomicInteger();
SctpServerPipelineSink(Executor workerExecutor, int workerCount) {
workers = new SctpWorker[workerCount];
for (int i = 0; i < workers.length; i ++) {
workers[i] = new SctpWorker(workerExecutor);
}
SctpServerPipelineSink(WorkerPool<SctpWorker> workerPool) {
this.workerPool = workerPool;
}
@Override
@ -85,14 +66,14 @@ class SctpServerPipelineSink extends AbstractSctpChannelSink {
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
close(channel, future);
channel.getWorker().close(channel, future);
}
break;
case BOUND:
if (value != null) {
bind(channel, future, (SocketAddress) value);
} else {
close(channel, future);
channel.getWorker().close(channel, future);
}
case INTEREST_OPS:
if (event instanceof SctpBindAddressEvent) {
@ -119,51 +100,47 @@ class SctpServerPipelineSink extends AbstractSctpChannelSink {
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
channel.worker.close(channel, future);
channel.getWorker().close(channel, future);
}
break;
case BOUND:
case CONNECTED:
if (value == null) {
channel.worker.close(channel, future);
channel.getWorker().close(channel, future);
}
break;
case INTEREST_OPS:
channel.worker.setInterestOps(channel, future, (Integer) value);
channel.getWorker().setInterestOps(channel, future, (Integer) value);
break;
}
} else if (e instanceof MessageEvent) {
MessageEvent event = (MessageEvent) e;
SctpChannelImpl channel = (SctpChannelImpl) event.getChannel();
boolean offered = channel.writeBuffer.offer(event);
boolean offered = channel.getWriteBufferQueue().offer(event);
assert offered;
channel.worker.writeFromUserCode(channel);
channel.getWorker().writeFromUserCode(channel);
}
}
private void bind(
SctpServerChannelImpl channel, ChannelFuture future,
SocketAddress localAddress) {
boolean bound = false;
boolean bossStarted = false;
try {
channel.serverChannel.bind(localAddress, channel.getConfig().getBacklog());
bound = true;
channel.setBound();
future.setSuccess();
fireChannelBound(channel, channel.getLocalAddress());
Executor bossExecutor =
((SctpServerSocketChannelFactory) channel.getFactory()).bossExecutor;
DeadLockProofWorker.start(bossExecutor, new Boss(channel));
bossStarted = true;
workerPool.nextWorker().registerWithWorker(channel, future);
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
} finally {
if (!bossStarted && bound) {
close(channel, future);
if (!bound) {
channel.getWorker().close(channel, future);
}
}
}
@ -192,146 +169,5 @@ class SctpServerPipelineSink extends AbstractSctpChannelSink {
}
}
private void close(SctpServerChannelImpl channel, ChannelFuture future) {
boolean bound = channel.isBound();
try {
if (channel.serverChannel.isOpen()) {
channel.serverChannel.close();
Selector selector = channel.selector;
if (selector != null) {
selector.wakeup();
}
}
// Make sure the boss thread is not running so that that the future
// is notified after a new connection cannot be accepted anymore.
// See NETTY-256 for more information.
channel.shutdownLock.lock();
try {
if (channel.setClosed()) {
future.setSuccess();
if (bound) {
fireChannelUnbound(channel);
}
fireChannelClosed(channel);
} else {
future.setSuccess();
}
} finally {
channel.shutdownLock.unlock();
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
SctpWorker nextWorker() {
return workers[Math.abs(
workerIndex.getAndIncrement() % workers.length)];
}
private final class Boss implements Runnable {
private final Selector selector;
private final SctpServerChannelImpl channel;
Boss(SctpServerChannelImpl channel) throws IOException {
this.channel = channel;
selector = Selector.open();
boolean registered = false;
try {
channel.serverChannel.register(selector, SelectionKey.OP_ACCEPT);
registered = true;
} finally {
if (!registered) {
closeSelector();
}
}
channel.selector = selector;
}
@Override
public void run() {
final Thread currentThread = Thread.currentThread();
channel.shutdownLock.lock();
try {
for (;;) {
try {
if (selector.select(500) > 0) {
selector.selectedKeys().clear();
}
SctpChannel acceptedSocket = channel.serverChannel.accept();
if (acceptedSocket != null) {
registerAcceptedChannel(acceptedSocket, currentThread);
}
} catch (SocketTimeoutException e) {
// Thrown every second to get ClosedChannelException
// raised.
} catch (CancelledKeyException e) {
// Raised by accept() when the server socket was closed.
} catch (ClosedSelectorException e) {
// Raised by accept() when the server socket was closed.
} catch (ClosedChannelException e) {
// Closed as requested.
break;
} catch (Throwable e) {
if (logger.isWarnEnabled()) {
logger.warn(
"Failed to accept a connection.", e);
}
try {
Thread.sleep(1000);
} catch (InterruptedException e1) {
// Ignore
}
}
}
} finally {
channel.shutdownLock.unlock();
closeSelector();
}
}
private void registerAcceptedChannel(SctpChannel acceptedSocket, Thread currentThread) {
try {
ChannelPipeline pipeline =
channel.getConfig().getPipelineFactory().getPipeline();
SctpWorker worker = nextWorker();
worker.register(new SctpAcceptedChannel(
channel.getFactory(), pipeline, channel,
SctpServerPipelineSink.this, acceptedSocket,
worker, currentThread), null);
} catch (Exception e) {
if (logger.isWarnEnabled()) {
logger.warn(
"Failed to initialize an accepted socket.", e);
}
try {
acceptedSocket.close();
} catch (IOException e2) {
if (logger.isWarnEnabled()) {
logger.warn(
"Failed to close a partially accepted socket.",
e2);
}
}
}
}
private void closeSelector() {
channel.selector = null;
try {
selector.close();
} catch (Exception e) {
if (logger.isWarnEnabled()) {
logger.warn("Failed to close a selector.", e);
}
}
}
}
}

50
transport-sctp/src/main/java/io/netty/channel/sctp/SctpServerSocketChannelFactory.java
View File

@ -18,7 +18,9 @@ package io.netty.channel.sctp;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelSink;
import io.netty.channel.ServerChannelFactory;
import io.netty.util.internal.ExecutorUtil;
import io.netty.channel.socket.nio.SelectorUtil;
import io.netty.channel.socket.nio.WorkerPool;
import io.netty.util.ExternalResourceReleasable;
import java.util.concurrent.Executor;
@ -77,9 +79,8 @@ import java.util.concurrent.Executor;
*/
public class SctpServerSocketChannelFactory implements ServerChannelFactory {
final Executor bossExecutor;
private final Executor workerExecutor;
private final ChannelSink sink;
private final WorkerPool<SctpWorker> workerPool;
/**
* Creates a new instance. Calling this constructor is same with calling
@ -87,52 +88,45 @@ public class SctpServerSocketChannelFactory implements ServerChannelFactory {
* the number of available processors in the machine. The number of
* available processors is obtained by {@link Runtime#availableProcessors()}.
*
* @param bossExecutor
* the {@link java.util.concurrent.Executor} which will execute the boss threads
* @param workerExecutor
* the {@link java.util.concurrent.Executor} which will execute the I/O worker threads
*/
public SctpServerSocketChannelFactory(
Executor bossExecutor, Executor workerExecutor) {
this(bossExecutor, workerExecutor, SelectorUtil.DEFAULT_IO_THREADS);
public SctpServerSocketChannelFactory(Executor workerExecutor) {
this(workerExecutor, SelectorUtil.DEFAULT_IO_THREADS);
}
/**
* Creates a new instance.
*
* @param bossExecutor
* the {@link java.util.concurrent.Executor} which will execute the boss threads
* @param workerExecutor
* the {@link java.util.concurrent.Executor} which will execute the I/O worker threads
* @param workerCount
* the maximum number of I/O worker threads
*/
public SctpServerSocketChannelFactory(
Executor bossExecutor, Executor workerExecutor,
public SctpServerSocketChannelFactory(Executor workerExecutor,
int workerCount) {
if (bossExecutor == null) {
throw new NullPointerException("bossExecutor");
}
if (workerExecutor == null) {
throw new NullPointerException("workerExecutor");
}
if (workerCount <= 0) {
throw new IllegalArgumentException(
"workerCount (" + workerCount + ") " +
"must be a positive integer.");
}
this.bossExecutor = bossExecutor;
this.workerExecutor = workerExecutor;
sink = new SctpServerPipelineSink(workerExecutor, workerCount);
this(new SctpWorkerPool(workerExecutor, workerCount, true));
}
public SctpServerSocketChannelFactory(WorkerPool<SctpWorker> workerPool) {
if (workerPool == null) {
throw new NullPointerException("workerPool");
}
this.workerPool = workerPool;
sink = new SctpServerPipelineSink(workerPool);
}
@Override
public SctpServerChannel newChannel(ChannelPipeline pipeline) {
return new SctpServerChannelImpl(this, pipeline, sink);
return new SctpServerChannelImpl(this, pipeline, sink, workerPool.nextWorker());
}
@Override
public void releaseExternalResources() {
ExecutorUtil.terminate(bossExecutor, workerExecutor);
if (workerPool instanceof ExternalResourceReleasable) {
((ExternalResourceReleasable) workerPool).releaseExternalResources();
}
}
}

866
transport-sctp/src/main/java/io/netty/channel/sctp/SctpWorker.java
View File

@ -15,321 +15,149 @@
*/
package io.netty.channel.sctp;
import static io.netty.channel.Channels.*;
import static io.netty.channel.Channels.fireChannelBound;
import static io.netty.channel.Channels.fireChannelClosed;
import static io.netty.channel.Channels.fireChannelConnected;
import static io.netty.channel.Channels.fireChannelUnbound;
import static io.netty.channel.Channels.fireExceptionCaught;
import static io.netty.channel.Channels.fireMessageReceived;
import static io.netty.channel.Channels.fireWriteComplete;
import static io.netty.channel.Channels.succeededFuture;
import io.netty.buffer.ChannelBuffer;
import io.netty.buffer.ChannelBufferFactory;
import io.netty.channel.Channel;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.MessageEvent;
import io.netty.channel.ReceiveBufferSizePredictor;
import io.netty.channel.sctp.SctpSendBufferPool.SendBuffer;
import io.netty.channel.socket.Worker;
import io.netty.logging.InternalLogger;
import io.netty.logging.InternalLoggerFactory;
import io.netty.util.internal.DeadLockProofWorker;
import io.netty.util.internal.QueueFactory;
import io.netty.channel.sctp.SctpSendBufferPool.SctpSendBuffer;
import io.netty.channel.socket.nio.AbstractNioChannel;
import io.netty.channel.socket.nio.NioWorker;
import java.io.IOException;
import java.net.ConnectException;
import java.net.SocketAddress;
import java.net.SocketTimeoutException;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousCloseException;
import java.nio.channels.CancelledKeyException;
import java.nio.channels.ClosedChannelException;
import java.nio.channels.NotYetConnectedException;
import java.nio.channels.ClosedSelectorException;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.util.Iterator;
import java.util.Queue;
import java.util.Set;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import com.sun.nio.sctp.MessageInfo;
import com.sun.nio.sctp.SctpChannel;
/**
*/
class SctpWorker implements Worker {
public class SctpWorker extends NioWorker {
private static final InternalLogger logger =
InternalLoggerFactory.getInstance(SctpWorker.class);
private static final int CONSTRAINT_LEVEL = SctpProviderMetadata.CONSTRAINT_LEVEL;
static final int CLEANUP_INTERVAL = 256; // XXX Hard-coded value, but won't need customization.
private final Executor executor;
private boolean started;
volatile Thread thread;
volatile Selector selector;
private final AtomicBoolean wakenUp = new AtomicBoolean();
private final ReadWriteLock selectorGuard = new ReentrantReadWriteLock();
private final Object startStopLock = new Object();
private final Queue<Runnable> registerTaskQueue = QueueFactory.createQueue(Runnable.class);
private final Queue<Runnable> writeTaskQueue = QueueFactory.createQueue(Runnable.class);
private final Queue<Runnable> eventQueue = QueueFactory.createQueue(Runnable.class);
private volatile int cancelledKeys; // should use AtomicInteger but we just need approximation
private final SctpReceiveBufferPool recvBufferPool = new SctpReceiveBufferPool();
private final SctpSendBufferPool sendBufferPool = new SctpSendBufferPool();
SctpWorker(Executor executor) {
this.executor = executor;
public SctpWorker(Executor executor) {
super(executor);
}
void register(SctpChannelImpl channel, ChannelFuture future) {
boolean server = !(channel instanceof SctpClientChannel);
Runnable registerTask = new RegisterTask(channel, future, server);
Selector selector;
synchronized (startStopLock) {
if (!started) {
// Open a selector if this worker didn't start yet.
try {
this.selector = selector = Selector.open();
} catch (Throwable t) {
throw new ChannelException(
"Failed to create a selector.", t);
}
// Start the worker thread with the new Selector.
boolean success = false;
try {
DeadLockProofWorker.start(executor, this);
success = true;
} finally {
if (!success) {
// Release the Selector if the execution fails.
try {
selector.close();
} catch (Throwable t) {
if (logger.isWarnEnabled()) {
logger.warn("Failed to close a selector.", t);
}
}
this.selector = selector = null;
// The method will return to the caller at this point.
}
}
} else {
// Use the existing selector if this worker has been started.
selector = this.selector;
}
assert selector != null && selector.isOpen();
started = true;
boolean offered = registerTaskQueue.offer(registerTask);
assert offered;
}
if (wakenUp.compareAndSet(false, true)) {
selector.wakeup();
}
public SctpWorker(Executor executor, boolean allowShutdownOnIdle) {
super(executor, allowShutdownOnIdle);
}
@Override
public void run() {
thread = Thread.currentThread();
boolean shutdown = false;
Selector selector = this.selector;
for (; ;) {
wakenUp.set(false);
if (CONSTRAINT_LEVEL != 0) {
selectorGuard.writeLock().lock();
// This empty synchronization block prevents the selector
// from acquiring its lock.
selectorGuard.writeLock().unlock();
}
try {
SelectorUtil.select(selector);
// 'wakenUp.compareAndSet(false, true)' is always evaluated
// before calling 'selector.wakeup()' to reduce the wake-up
// overhead. (Selector.wakeup() is an expensive operation.)
//
// However, there is a race condition in this approach.
// The race condition is triggered when 'wakenUp' is set to
// true too early.
//
// 'wakenUp' is set to true too early if:
// 1) Selector is waken up between 'wakenUp.set(false)' and
// 'selector.select(...)'. (BAD)
// 2) Selector is waken up between 'selector.select(...)' and
// 'if (wakenUp.get()) { ... }'. (OK)
//
// In the first case, 'wakenUp' is set to true and the
// following 'selector.select(...)' will wake up immediately.
// Until 'wakenUp' is set to false again in the next round,
// 'wakenUp.compareAndSet(false, true)' will fail, and therefore
// any attempt to wake up the Selector will fail, too, causing
// the following 'selector.select(...)' call to block
// unnecessarily.
//
// To fix this problem, we wake up the selector again if wakenUp
// is true immediately after selector.select(...).
// It is inefficient in that it wakes up the selector for both
// the first case (BAD - wake-up required) and the second case
// (OK - no wake-up required).
if (wakenUp.get()) {
public void registerWithWorker(final Channel channel, final ChannelFuture future) {
try {
if (channel instanceof SctpServerChannelImpl) {
final SctpServerChannelImpl ch = (SctpServerChannelImpl) channel;
registerTaskQueue.add(new Runnable() {
@Override
public void run() {
try {
ch.serverChannel.register(selector, SelectionKey.OP_ACCEPT, ch);
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
});
if (wakenUp.compareAndSet(false, true)) {
selector.wakeup();
}
cancelledKeys = 0;
processRegisterTaskQueue();
processEventQueue();
processWriteTaskQueue();
processSelectedKeys(selector.selectedKeys());
// Exit the loop when there's nothing to handle.
// The shutdown flag is used to delay the shutdown of this
// loop to avoid excessive Selector creation when
// connections are registered in a one-by-one manner instead of
// concurrent manner.
if (selector.keys().isEmpty()) {
if (shutdown ||
executor instanceof ExecutorService && ((ExecutorService) executor).isShutdown()) {
synchronized (startStopLock) {
if (registerTaskQueue.isEmpty() && selector.keys().isEmpty()) {
started = false;
try {
selector.close();
} catch (IOException e) {
if (logger.isWarnEnabled()) {
logger.warn(
"Failed to close a selector.", e);
}
} finally {
this.selector = null;
}
break;
} else {
shutdown = false;
} else if (channel instanceof SctpClientChannel) {
final SctpClientChannel clientChannel = (SctpClientChannel) channel;
registerTaskQueue.add(new Runnable() {
@Override
public void run() {
try {
try {
clientChannel.getJdkChannel().register(selector, clientChannel.getRawInterestOps() | SelectionKey.OP_CONNECT, clientChannel);
} catch (ClosedChannelException e) {
clientChannel.getWorker().close(clientChannel, succeededFuture(channel));
}
int connectTimeout = channel.getConfig().getConnectTimeoutMillis();
if (connectTimeout > 0) {
clientChannel.connectDeadlineNanos = System.nanoTime() + connectTimeout * 1000000L;
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
} else {
// Give one more second.
shutdown = true;
}
} else {
shutdown = false;
}
} catch (Throwable t) {
if (logger.isWarnEnabled()) {
logger.warn(
"Unexpected exception in the selector loop.", t);
}
// Prevent possible consecutive immediate failures that lead to
// excessive CPU consumption.
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// Ignore.
});
if (wakenUp.compareAndSet(false, true)) {
selector.wakeup();
}
} else {
super.registerWithWorker(channel, future);
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
@Override
protected boolean accept(SelectionKey key) {
SctpServerChannelImpl channel = (SctpServerChannelImpl) key.attachment();
try {
SctpChannel acceptedSocket = channel.serverChannel.accept();
if (acceptedSocket != null) {
ChannelPipeline pipeline =
channel.getConfig().getPipelineFactory().getPipeline();
registerTask(new SctpAcceptedChannel(channel.getFactory(), pipeline, channel,
channel.getPipeline().getSink(), acceptedSocket, this), null);
return true;
}
return false;
} catch (SocketTimeoutException e) {
// Thrown every second to get ClosedChannelException
// raised.
} catch (CancelledKeyException e) {
// Raised by accept() when the server socket was closed.
} catch (ClosedSelectorException e) {
// Raised by accept() when the server socket was closed.
} catch (ClosedChannelException e) {
// Closed as requested.
} catch (Throwable e) {
if (logger.isWarnEnabled()) {
logger.warn(
"Failed to accept a connection.", e);
}
}
return true;
}
@Override
public void executeInIoThread(Runnable task) {
if (Thread.currentThread() == thread) {
task.run();
} else {
boolean added = eventQueue.offer(task);
if (added) {
// wake up the selector to speed things
selector.wakeup();
}
}
}
static boolean isIoThread(SctpChannelImpl channel) {
return Thread.currentThread() == channel.worker.thread;
}
private void processRegisterTaskQueue() throws IOException {
for (; ;) {
final Runnable task = registerTaskQueue.poll();
if (task == null) {
break;
}
task.run();
cleanUpCancelledKeys();
}
}
private void processWriteTaskQueue() throws IOException {
for (; ;) {
final Runnable task = writeTaskQueue.poll();
if (task == null) {
break;
}
task.run();
cleanUpCancelledKeys();
}
}
private void processEventQueue() throws IOException {
for (;;) {
final Runnable task = eventQueue.poll();
if (task == null) {
break;
}
task.run();
cleanUpCancelledKeys();
}
}
private void processSelectedKeys(final Set<SelectionKey> selectedKeys) throws IOException {
for (Iterator<SelectionKey> i = selectedKeys.iterator(); i.hasNext();) {
SelectionKey k = i.next();
i.remove();
try {
int readyOps = k.readyOps();
if ((readyOps & SelectionKey.OP_READ) != 0 || readyOps == 0) {
if (!read(k)) {
// Connection already closed - no need to handle write.
continue;
}
}
if ((readyOps & SelectionKey.OP_WRITE) != 0) {
writeFromSelectorLoop(k);
}
} catch (CancelledKeyException e) {
close(k);
}
if (cleanUpCancelledKeys()) {
break; // break the loop to avoid ConcurrentModificationException
}
}
}
private boolean cleanUpCancelledKeys() throws IOException {
if (cancelledKeys >= CLEANUP_INTERVAL) {
cancelledKeys = 0;
selector.selectNow();
return true;
}
return false;
}
private boolean read(SelectionKey k) {
protected boolean read(SelectionKey k) {
final SctpChannelImpl channel = (SctpChannelImpl) k.attachment();
final ReceiveBufferSizePredictor predictor =
@ -341,7 +169,7 @@ class SctpWorker implements Worker {
ByteBuffer bb = recvBufferPool.acquire(predictedRecvBufSize);
try {
messageInfo = channel.channel.receive(bb, null, channel.notificationHandler);
messageInfo = channel.getJdkChannel().getChannel().receive(bb, null, channel.notificationHandler);
messageReceived = messageInfo != null;
} catch (ClosedChannelException e) {
// Can happen, and does not need a user attention.
@ -372,7 +200,7 @@ class SctpWorker implements Worker {
recvBufferPool.release(bb);
}
if (channel.channel.isBlocking() && !messageReceived) {
if (channel.getJdkChannel().getChannel().isBlocking() && !messageReceived) {
k.cancel(); // Some JDK implementations run into an infinite loop without this.
close(channel, succeededFuture(channel));
return false;
@ -381,82 +209,25 @@ class SctpWorker implements Worker {
return true;
}
private void close(SelectionKey k) {
SctpChannelImpl ch = (SctpChannelImpl) k.attachment();
close(ch, succeededFuture(ch));
}
void writeFromUserCode(final SctpChannelImpl channel) {
if (!channel.isConnected()) {
cleanUpWriteBuffer(channel);
return;
}
if (scheduleWriteIfNecessary(channel)) {
return;
}
// From here, we are sure Thread.currentThread() == workerThread.
if (channel.writeSuspended) {
return;
}
if (channel.inWriteNowLoop) {
return;
}
write0(channel);
}
void writeFromTaskLoop(final SctpChannelImpl ch) {
if (!ch.writeSuspended) {
write0(ch);
}
}
void writeFromSelectorLoop(final SelectionKey k) {
SctpChannelImpl ch = (SctpChannelImpl) k.attachment();
ch.writeSuspended = false;
write0(ch);
}
private boolean scheduleWriteIfNecessary(final SctpChannelImpl channel) {
final Thread currentThread = Thread.currentThread();
final Thread workerThread = thread;
if (currentThread != workerThread) {
if (channel.writeTaskInTaskQueue.compareAndSet(false, true)) {
boolean offered = writeTaskQueue.offer(channel.writeTask);
assert offered;
@Override
protected void connect(SelectionKey k) {
final SctpClientChannel ch = (SctpClientChannel) k.attachment();
try {
// TODO: Remove cast
if (ch.getJdkChannel().finishConnect()) {
registerTask(ch, ch.connectFuture);
}
if (!(channel instanceof SctpAcceptedChannel) ||
((SctpAcceptedChannel) channel).bossThread != currentThread) {
final Selector workerSelector = selector;
if (workerSelector != null) {
if (wakenUp.compareAndSet(false, true)) {
workerSelector.wakeup();
}
}
} else {
// A write request can be made from an acceptor thread (boss)
// when a user attempted to write something in:
//
// * channelOpen()
// * channelBound()
// * channelConnected().
//
// In this case, there's no need to wake up the selector because
// the channel is not even registered yet at this moment.
}
return true;
} catch (Throwable t) {
ch.connectFuture.setFailure(t);
fireExceptionCaught(ch, t);
k.cancel(); // Some JDK implementations run into an infinite loop without this.
ch.getWorker().close(ch, succeededFuture(ch));
}
return false;
}
private void write0(SctpChannelImpl channel) {
@Override
protected void write0(AbstractNioChannel ach) {
SctpChannelImpl channel = (SctpChannelImpl) ach;
boolean open = true;
boolean addOpWrite = false;
boolean removeOpWrite = false;
@ -464,24 +235,26 @@ class SctpWorker implements Worker {
long writtenBytes = 0;
final SctpSendBufferPool sendBufferPool = this.sendBufferPool;
final com.sun.nio.sctp.SctpChannel ch = channel.channel;
final Queue<MessageEvent> writeBuffer = channel.writeBuffer;
final com.sun.nio.sctp.SctpChannel ch = channel.getJdkChannel().getChannel();
final Queue<MessageEvent> writeBuffer = channel.getWriteBufferQueue();
final int writeSpinCount = channel.getConfig().getWriteSpinCount();
synchronized (channel.writeLock) {
channel.inWriteNowLoop = true;
synchronized (channel.getWriteLock()) {
channel.setInWriteNowLoop(true);
for (; ;) {
MessageEvent evt = channel.currentWriteEvent;
SendBuffer buf;
MessageEvent evt = channel.getCurrentWriteEvent();
SctpSendBuffer buf;
if (evt == null) {
if ((channel.currentWriteEvent = evt = writeBuffer.poll()) == null) {
if ((evt = writeBuffer.poll()) == null) {
removeOpWrite = true;
channel.writeSuspended = false;
channel.setWriteSuspended(false);
break;
}
channel.setCurrentWriteEvent(evt);
channel.currentWriteBuffer = buf = sendBufferPool.acquire(evt.getMessage());
buf = sendBufferPool.acquire(evt.getMessage());
channel.setCurrentWriteBuffer(buf);
} else {
buf = channel.currentWriteBuffer;
buf = channel.getCurrentWriteBuffer();
}
ChannelFuture future = evt.getFuture();
@ -501,15 +274,15 @@ class SctpWorker implements Worker {
if (buf.finished()) {
// Successful write - proceed to the next message.
buf.release();
channel.currentWriteEvent = null;
channel.currentWriteBuffer = null;
channel.setCurrentWriteEvent(null);
channel.setCurrentWriteBuffer(null);
evt = null;
buf = null;
future.setSuccess();
} else {
// Not written fully - perhaps the kernel buffer is full.
addOpWrite = true;
channel.writeSuspended = true;
channel.setWriteSuspended(true);
if (localWrittenBytes > 0) {
// Notify progress listeners if necessary.
@ -523,8 +296,8 @@ class SctpWorker implements Worker {
// Doesn't need a user attention - ignore.
} catch (Throwable t) {
buf.release();
channel.currentWriteEvent = null;
channel.currentWriteBuffer = null;
channel.setCurrentWriteEvent(null);
channel.setCurrentWriteBuffer(null);
buf = null;
evt = null;
future.setFailure(t);
@ -535,7 +308,7 @@ class SctpWorker implements Worker {
}
}
}
channel.inWriteNowLoop = false;
channel.setInWriteNowLoop(false);
}
if (open) {
@ -549,263 +322,142 @@ class SctpWorker implements Worker {
fireWriteComplete(channel, writtenBytes);
}
private void setOpWrite(SctpChannelImpl channel) {
Selector selector = this.selector;
SelectionKey key = channel.channel.keyFor(selector);
if (key == null) {
return;
}
if (!key.isValid()) {
close(key);
return;
}
// interestOps can change at any time and at any thread.
// Acquire a lock to avoid possible race condition.
synchronized (channel.interestOpsLock) {
int interestOps = channel.getRawInterestOps();
if ((interestOps & SelectionKey.OP_WRITE) == 0) {
interestOps |= SelectionKey.OP_WRITE;
key.interestOps(interestOps);
channel.setRawInterestOpsNow(interestOps);
@Override
protected void registerTask(AbstractNioChannel ch, ChannelFuture future) {
boolean server = !(ch instanceof SctpClientChannel);
SctpChannelImpl channel = (SctpChannelImpl) ch;
SocketAddress localAddress = channel.getLocalAddress();
SocketAddress remoteAddress = channel.getRemoteAddress();
if (localAddress == null || remoteAddress == null) {
if (future != null) {
future.setFailure(new ClosedChannelException());
}
}
}
private void clearOpWrite(SctpChannelImpl channel) {
Selector selector = this.selector;
SelectionKey key = channel.channel.keyFor(selector);
if (key == null) {
return;
}
if (!key.isValid()) {
close(key);
close(channel, succeededFuture(channel));
return;
}
// interestOps can change at any time and at any thread.
// Acquire a lock to avoid possible race condition.
synchronized (channel.interestOpsLock) {
int interestOps = channel.getRawInterestOps();
if ((interestOps & SelectionKey.OP_WRITE) != 0) {
interestOps &= ~SelectionKey.OP_WRITE;
key.interestOps(interestOps);
channel.setRawInterestOpsNow(interestOps);
}
}
}
void close(SctpChannelImpl channel, ChannelFuture future) {
boolean connected = channel.isConnected();
boolean bound = channel.isBound();
try {
channel.channel.close();
cancelledKeys++;
if (channel.setClosed()) {
future.setSuccess();
if (connected) {
fireChannelDisconnected(channel);
}
if (bound) {
fireChannelUnbound(channel);
}
cleanUpWriteBuffer(channel);
fireChannelClosed(channel);
} else {
future.setSuccess();
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
private void cleanUpWriteBuffer(SctpChannelImpl channel) {
Exception cause = null;
boolean fireExceptionCaught = false;
// Clean up the stale messages in the write buffer.
synchronized (channel.writeLock) {
MessageEvent evt = channel.currentWriteEvent;
if (evt != null) {
// Create the exception only once to avoid the excessive overhead
// caused by fillStackTrace.
if (channel.isOpen()) {
cause = new NotYetConnectedException();
} else {
cause = new ClosedChannelException();
}
ChannelFuture future = evt.getFuture();
channel.currentWriteBuffer.release();
channel.currentWriteBuffer = null;
channel.currentWriteEvent = null;
evt = null;
future.setFailure(cause);
fireExceptionCaught = true;
}
Queue<MessageEvent> writeBuffer = channel.writeBuffer;
if (!writeBuffer.isEmpty()) {
// Create the exception only once to avoid the excessive overhead
// caused by fillStackTrace.
if (cause == null) {
if (channel.isOpen()) {
cause = new NotYetConnectedException();
} else {
cause = new ClosedChannelException();
}
}
for (; ;) {
evt = writeBuffer.poll();
if (evt == null) {
break;
}
evt.getFuture().setFailure(cause);
fireExceptionCaught = true;
}
}
}
if (fireExceptionCaught) {
fireExceptionCaught(channel, cause);
}
}
void setInterestOps(
SctpChannelImpl channel, ChannelFuture future, int interestOps) {
boolean changed = false;
try {
// interestOps can change at any time and at any thread.
// Acquire a lock to avoid possible race condition.
synchronized (channel.interestOpsLock) {
Selector selector = this.selector;
SelectionKey key = channel.channel.keyFor(selector);
if (key == null || selector == null) {
// Not registered to the worker yet.
// Set the rawInterestOps immediately; RegisterTask will pick it up.
channel.setRawInterestOpsNow(interestOps);
return;
}
// Override OP_WRITE flag - a user cannot change this flag.
interestOps &= ~Channel.OP_WRITE;
interestOps |= channel.getRawInterestOps() & Channel.OP_WRITE;
switch (CONSTRAINT_LEVEL) {
case 0:
if (channel.getRawInterestOps() != interestOps) {
key.interestOps(interestOps);
if (Thread.currentThread() != thread &&
wakenUp.compareAndSet(false, true)) {
selector.wakeup();
}
changed = true;
}
break;
case 1:
case 2:
if (channel.getRawInterestOps() != interestOps) {
if (Thread.currentThread() == thread) {
key.interestOps(interestOps);
changed = true;
} else {
selectorGuard.readLock().lock();
try {
if (wakenUp.compareAndSet(false, true)) {
selector.wakeup();
}
key.interestOps(interestOps);
changed = true;
} finally {
selectorGuard.readLock().unlock();
}
}
}
break;
default:
throw new Error();
}
if (changed) {
channel.setRawInterestOpsNow(interestOps);
}
}
future.setSuccess();
if (changed) {
fireChannelInterestChanged(channel);
}
} catch (CancelledKeyException e) {
// setInterestOps() was called on a closed channel.
ClosedChannelException cce = new ClosedChannelException();
future.setFailure(cce);
fireExceptionCaught(channel, cce);
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
private final class RegisterTask implements Runnable {
private final SctpChannelImpl channel;
private final ChannelFuture future;
private final boolean server;
RegisterTask(
SctpChannelImpl channel, ChannelFuture future, boolean server) {
this.channel = channel;
this.future = future;
this.server = server;
}
@Override
public void run() {
SocketAddress localAddress = channel.getLocalAddress();
SocketAddress remoteAddress = channel.getRemoteAddress();
if (localAddress == null || remoteAddress == null) {
if (future != null) {
future.setFailure(new ClosedChannelException());
}
close(channel, succeededFuture(channel));
return;
}
try {
if (server) {
channel.channel.configureBlocking(false);
}
synchronized (channel.interestOpsLock) {
channel.channel.register(
boolean registered = channel.getJdkChannel().isRegistered();
if (!registered) {
synchronized (channel.getInterestedOpsLock()) {
channel.getJdkChannel().register(
selector, channel.getRawInterestOps(), channel);
}
channel.setConnected();
if (future != null) {
future.setSuccess();
} else {
// TODO: Is this needed ?
setInterestOps(channel, future, channel.getRawInterestOps());
}
if (future != null) {
((SctpChannelImpl) channel).setConnected();
future.setSuccess();
}
} catch (IOException e) {
if (future != null) {
future.setFailure(e);
}
close(channel, succeededFuture(channel));
if (!(e instanceof ClosedChannelException)) {
throw new ChannelException(
"Failed to register a socket to the selector.", e);
}
}
if (!server) {
if (!((SctpClientChannel) channel).boundManually) {
fireChannelBound(channel, localAddress);
}
fireChannelConnected(channel, remoteAddress);
}
}
@Override
protected void processConnectTimeout(Set<SelectionKey> keys, long currentTimeNanos) {
ConnectException cause = null;
for (SelectionKey k: keys) {
if (!k.isValid()) {
// Comment the close call again as it gave us major problems with ClosedChannelExceptions.
//
// See:
// * https://github.com/netty/netty/issues/142
// * https://github.com/netty/netty/issues/138
//
//close(k);
continue;
}
// Something is ready so skip it
if (k.readyOps() != 0) {
continue;
}
// check if the channel is in
Object attachment = k.attachment();
if (attachment instanceof SctpClientChannel) {
SctpClientChannel ch = (SctpClientChannel) attachment;
if (!ch.isConnected() && ch.connectDeadlineNanos > 0 && currentTimeNanos >= ch.connectDeadlineNanos) {
if (cause == null) {
cause = new ConnectException("connection timed out");
}
ch.connectFuture.setFailure(cause);
fireExceptionCaught(ch, cause);
ch.getWorker().close(ch, succeededFuture(ch));
}
} catch (IOException e) {
if (future != null) {
future.setFailure(e);
}
close(channel, succeededFuture(channel));
if (!(e instanceof ClosedChannelException)) {
throw new ChannelException(
"Failed to register a socket to the selector.", e);
}
}
}
@Override
protected void close(SelectionKey k) {
Object attachment = k.attachment();
if (attachment instanceof SctpServerChannelImpl) {
SctpServerChannelImpl ch = (SctpServerChannelImpl) attachment;
close(ch, succeededFuture(ch));
} else {
super.close(k);
}
}
void close(SctpServerChannelImpl channel, ChannelFuture future) {
boolean bound = channel.isBound();
try {
if (channel.serverChannel.isOpen()) {
channel.serverChannel.close();
Selector selector = channel.selector;
if (selector != null) {
selector.wakeup();
}
}
if (!server) {
if (!((SctpClientChannel) channel).boundManually) {
fireChannelBound(channel, localAddress);
// Make sure the boss thread is not running so that that the future
// is notified after a new connection cannot be accepted anymore.
// See NETTY-256 for more information.
channel.shutdownLock.lock();
try {
if (channel.setClosed()) {
future.setSuccess();
if (bound) {
fireChannelUnbound(channel);
}
fireChannelClosed(channel);
} else {
future.setSuccess();
}
fireChannelConnected(channel, remoteAddress);
} finally {
channel.shutdownLock.unlock();
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
}

33
transport-sctp/src/main/java/io/netty/channel/sctp/SctpWorkerPool.java Normal file
View File

@ -0,0 +1,33 @@
/*
* Copyright 2011 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.sctp;
import java.util.concurrent.Executor;
import io.netty.channel.socket.nio.AbstractNioWorkerPool;
public class SctpWorkerPool extends AbstractNioWorkerPool<SctpWorker> {
public SctpWorkerPool(Executor executor, int workerCount, boolean allowShutdownOnIdle) {
super(executor, workerCount, allowShutdownOnIdle);
}
@Override
protected SctpWorker createWorker(Executor executor, boolean allowShutdownOnIdle) {
return new SctpWorker(executor, allowShutdownOnIdle);
}
}

48
transport-sctp/src/main/java/io/netty/channel/sctp/SelectorUtil.java
View File

@ -1,48 +0,0 @@
/*
* Copyright 2011 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.sctp;
import io.netty.logging.InternalLogger;
import io.netty.logging.InternalLoggerFactory;
import java.io.IOException;
import java.nio.channels.CancelledKeyException;
import java.nio.channels.Selector;
final class SelectorUtil {
private static final InternalLogger logger =
InternalLoggerFactory.getInstance(SelectorUtil.class);
static final int DEFAULT_IO_THREADS = Runtime.getRuntime().availableProcessors() * 2;
static void select(Selector selector) throws IOException {
try {
selector.select(10); // does small timeout give more throughput + less CPU usage?
} catch (CancelledKeyException e) {
if (logger.isDebugEnabled()) {
// Harmless exception - log anyway
logger.debug(
CancelledKeyException.class.getSimpleName() +
" raised by a Selector - JDK bug?", e);
}
}
}
private SelectorUtil() {
// Unused
}
}

2
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpClientBootstrapTest.java
View File

@ -24,6 +24,6 @@ import java.util.concurrent.Executor;
public class SctpClientBootstrapTest extends AbstractSocketClientBootstrapTest {
@Override
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
}

4
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpCompatibleObjectStreamEchoTest.java
View File

@ -25,11 +25,11 @@ import java.util.concurrent.Executor;
public class SctpCompatibleObjectStreamEchoTest extends AbstractSocketCompatibleObjectStreamEchoTest {
@Override
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
@Override
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
}

4
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpEchoTest.java
View File

@ -25,11 +25,11 @@ import java.util.concurrent.Executor;
public class SctpEchoTest extends AbstractSocketEchoTest {
@Override
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
@Override
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
}

5
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpFixedLengthEchoTest.java
View File

@ -25,11 +25,12 @@ import java.util.concurrent.Executor;
public class SctpFixedLengthEchoTest extends AbstractSocketFixedLengthEchoTest {
@Override
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
@Override
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
}

4
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpMultiHomingEchoTest.java
View File

@ -72,11 +72,11 @@ public class SctpMultiHomingEchoTest {
}
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
@Test(timeout = 15000)

4
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpMultiStreamingEchoTest.java
View File

@ -72,11 +72,11 @@ public class SctpMultiStreamingEchoTest {
}
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
@Test(timeout = 10000)

4
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpObjectStreamEchoTest.java
View File

@ -25,11 +25,11 @@ import java.util.concurrent.Executor;
public class SctpObjectStreamEchoTest extends AbstractSocketObjectStreamEchoTest {
@Override
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
@Override
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
}

2
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpServerBootstrapTest.java
View File

@ -24,6 +24,6 @@ import java.util.concurrent.Executor;
public class SctpServerBootstrapTest extends AbstractSocketServerBootstrapTest {
@Override
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
}

4
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpSslEchoTest.java
View File

@ -25,11 +25,11 @@ import java.util.concurrent.Executor;
public class SctpSslEchoTest extends AbstractSocketSslEchoTest {
@Override
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
@Override
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
}

4
transport-sctp/src/test/java/io/netty/testsuite/transport/sctp/SctpStringEchoTest.java
View File

@ -25,11 +25,11 @@ import java.util.concurrent.Executor;
public class SctpStringEchoTest extends AbstractSocketStringEchoTest {
@Override
protected ChannelFactory newServerSocketChannelFactory(Executor executor) {
return new SctpServerSocketChannelFactory(executor, executor);
return new SctpServerSocketChannelFactory(executor);
}
@Override
protected ChannelFactory newClientSocketChannelFactory(Executor executor) {
return new SctpClientSocketChannelFactory(executor, executor);
return new SctpClientSocketChannelFactory(executor);
}
}

2
transport/src/main/java/io/netty/channel/socket/nio/AbstractJdkChannel.java
View File

@ -25,7 +25,7 @@ public abstract class AbstractJdkChannel implements JdkChannel {
final AbstractSelectableChannel channel;
AbstractJdkChannel(AbstractSelectableChannel channel) {
protected AbstractJdkChannel(AbstractSelectableChannel channel) {
this.channel = channel;
}

26
transport/src/main/java/io/netty/channel/socket/nio/AbstractNioChannel.java
View File

@ -24,7 +24,7 @@ import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelSink;
import io.netty.channel.MessageEvent;
import io.netty.channel.socket.nio.SocketSendBufferPool.SendBuffer;
import io.netty.channel.socket.nio.SendBufferPool.SendBuffer;
import io.netty.util.internal.QueueFactory;
import io.netty.util.internal.ThreadLocalBoolean;
@ -38,7 +38,7 @@ import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
abstract class AbstractNioChannel extends AbstractChannel implements NioChannel {
public abstract class AbstractNioChannel extends AbstractChannel implements NioChannel {
/**
* The {@link AbstractNioWorker}.
@ -48,12 +48,12 @@ abstract class AbstractNioChannel extends AbstractChannel implements NioChannel
/**
* Monitor object to synchronize access to InterestedOps.
*/
final Object interestOpsLock = new Object();
protected final Object interestOpsLock = new Object();
/**
* Monitor object for synchronizing access to the {@link WriteRequestQueue}.
*/
final Object writeLock = new Object();
protected final Object writeLock = new Object();
/**
* WriteTask that performs write operations.
@ -68,7 +68,7 @@ abstract class AbstractNioChannel extends AbstractChannel implements NioChannel
/**
* Queue of write {@link MessageEvent}s.
*/
final Queue<MessageEvent> writeBufferQueue = new WriteRequestQueue();
protected final Queue<MessageEvent> writeBufferQueue = createRequestQueue();
/**
* Keeps track of the number of bytes that the {@link WriteRequestQueue} currently
@ -84,14 +84,14 @@ abstract class AbstractNioChannel extends AbstractChannel implements NioChannel
/**
* The current write {@link MessageEvent}
*/
MessageEvent currentWriteEvent;
SendBuffer currentWriteBuffer;
protected MessageEvent currentWriteEvent;
protected SendBuffer currentWriteBuffer;
/**
* Boolean that indicates that write operation is in progress.
*/
boolean inWriteNowLoop;
boolean writeSuspended;
protected boolean inWriteNowLoop;
protected boolean writeSuspended;
private volatile InetSocketAddress localAddress;
@ -213,7 +213,11 @@ abstract class AbstractNioChannel extends AbstractChannel implements NioChannel
return super.setClosed();
}
private final class WriteRequestQueue implements BlockingQueue<MessageEvent> {
protected WriteRequestQueue createRequestQueue() {
return new WriteRequestQueue();
}
public class WriteRequestQueue implements BlockingQueue<MessageEvent> {
private final ThreadLocalBoolean notifying = new ThreadLocalBoolean();
private final BlockingQueue<MessageEvent> queue;
@ -381,7 +385,7 @@ abstract class AbstractNioChannel extends AbstractChannel implements NioChannel
return e;
}
private int getMessageSize(MessageEvent e) {
protected int getMessageSize(MessageEvent e) {
Object m = e.getMessage();
if (m instanceof ChannelBuffer) {
return ((ChannelBuffer) m).readableBytes();

36
transport/src/main/java/io/netty/channel/socket/nio/AbstractNioWorker.java
View File

@ -23,7 +23,7 @@ import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.MessageEvent;
import io.netty.channel.socket.Worker;
import io.netty.channel.socket.nio.SocketSendBufferPool.SendBuffer;
import io.netty.channel.socket.nio.SendBufferPool.SendBuffer;
import io.netty.logging.InternalLogger;
import io.netty.logging.InternalLoggerFactory;
import io.netty.util.internal.DeadLockProofWorker;
@ -54,7 +54,7 @@ abstract class AbstractNioWorker implements Worker {
/**
* Internal Netty logger.
*/
private static final InternalLogger logger = InternalLoggerFactory
protected static final InternalLogger logger = InternalLoggerFactory
.getInstance(AbstractNioWorker.class);
private static final int CONSTRAINT_LEVEL = NioProviderMetadata.CONSTRAINT_LEVEL;
@ -104,7 +104,7 @@ abstract class AbstractNioWorker implements Worker {
/**
* Queue of channel registration tasks.
*/
private final Queue<Runnable> registerTaskQueue = QueueFactory.createQueue(Runnable.class);
protected final Queue<Runnable> registerTaskQueue = QueueFactory.createQueue(Runnable.class);
/**
* Queue of WriteTasks
@ -116,7 +116,7 @@ abstract class AbstractNioWorker implements Worker {
private volatile int cancelledKeys; // should use AtomicInteger but we just need approximation
private final SocketSendBufferPool sendBufferPool = new SocketSendBufferPool();
private final SendBufferPool sendBufferPool = new SendBufferPool();
private final boolean allowShutdownOnIdle;
@ -130,7 +130,7 @@ abstract class AbstractNioWorker implements Worker {
}
public final void registerWithWorker(final Channel channel, final ChannelFuture future) {
public void registerWithWorker(final Channel channel, final ChannelFuture future) {
final Selector selector = start();
try {
@ -203,7 +203,7 @@ abstract class AbstractNioWorker implements Worker {
*
* @return selector
*/
private Selector start() {
protected final Selector start() {
synchronized (startStopLock) {
if (!started && selector == null) {
// Open a selector if this worker didn't start yet.
@ -461,7 +461,7 @@ abstract class AbstractNioWorker implements Worker {
}
}
private boolean accept(SelectionKey key) {
protected boolean accept(SelectionKey key) {
NioServerSocketChannel channel = (NioServerSocketChannel) key.attachment();
try {
SocketChannel acceptedSocket = channel.socket.accept();
@ -494,7 +494,7 @@ abstract class AbstractNioWorker implements Worker {
}
private void processConnectTimeout(Set<SelectionKey> keys, long currentTimeNanos) {
protected void processConnectTimeout(Set<SelectionKey> keys, long currentTimeNanos) {
ConnectException cause = null;
for (SelectionKey k: keys) {
if (!k.isValid()) {
@ -533,7 +533,7 @@ abstract class AbstractNioWorker implements Worker {
}
}
private void connect(SelectionKey k) {
protected void connect(SelectionKey k) {
final NioClientSocketChannel ch = (NioClientSocketChannel) k.attachment();
try {
// TODO: Remove cast
@ -559,7 +559,7 @@ abstract class AbstractNioWorker implements Worker {
private void close(SelectionKey k) {
protected void close(SelectionKey k) {
Object attachment = k.attachment();
if (attachment instanceof AbstractNioChannel) {
AbstractNioChannel ch = (AbstractNioChannel) attachment;
@ -572,7 +572,7 @@ abstract class AbstractNioWorker implements Worker {
}
}
void writeFromUserCode(final AbstractNioChannel channel) {
public void writeFromUserCode(final AbstractNioChannel channel) {
if (!channel.isConnected()) {
cleanUpWriteBuffer(channel);
@ -595,7 +595,7 @@ abstract class AbstractNioWorker implements Worker {
write0(channel);
}
void writeFromTaskLoop(AbstractNioChannel ch) {
public void writeFromTaskLoop(AbstractNioChannel ch) {
if (!ch.writeSuspended) {
write0(ch);
}
@ -636,7 +636,7 @@ abstract class AbstractNioWorker implements Worker {
long writtenBytes = 0;
final SocketSendBufferPool sendBufferPool = this.sendBufferPool;
final SendBufferPool sendBufferPool = this.sendBufferPool;
final WritableByteChannel ch = channel.getJdkChannel();
final Queue<MessageEvent> writeBuffer = channel.writeBufferQueue;
@ -746,7 +746,7 @@ abstract class AbstractNioWorker implements Worker {
return Thread.currentThread() == thread;
}
private void setOpWrite(AbstractNioChannel channel) {
protected void setOpWrite(AbstractNioChannel channel) {
Selector selector = this.selector;
SelectionKey key = channel.getJdkChannel().keyFor(selector);
if (key == null) {
@ -769,7 +769,7 @@ abstract class AbstractNioWorker implements Worker {
}
}
private void clearOpWrite(AbstractNioChannel channel) {
protected void clearOpWrite(AbstractNioChannel channel) {
Selector selector = this.selector;
SelectionKey key = channel.getJdkChannel().keyFor(selector);
if (key == null) {
@ -793,7 +793,7 @@ abstract class AbstractNioWorker implements Worker {
}
void close(NioServerSocketChannel channel, ChannelFuture future) {
public void close(NioServerSocketChannel channel, ChannelFuture future) {
boolean isIoThread = isIoThread();
boolean bound = channel.isBound();
@ -842,7 +842,7 @@ abstract class AbstractNioWorker implements Worker {
}
}
void close(AbstractNioChannel channel, ChannelFuture future) {
public void close(AbstractNioChannel channel, ChannelFuture future) {
boolean connected = channel.isConnected();
boolean bound = channel.isBound();
boolean iothread = isIoThread();
@ -945,7 +945,7 @@ abstract class AbstractNioWorker implements Worker {
}
}
void setInterestOps(AbstractNioChannel channel, ChannelFuture future, int interestOps) {
public void setInterestOps(AbstractNioChannel channel, ChannelFuture future, int interestOps) {
boolean changed = false;
boolean iothread = isIoThread();
try {

2
transport/src/main/java/io/netty/channel/socket/nio/AbstractNioWorkerPool.java
View File

@ -42,7 +42,7 @@ public abstract class AbstractNioWorkerPool<E extends AbstractNioWorker> impleme
* @param allowShutdownOnIdle allow the {@link Worker}'s to shutdown when there is not {@link Channel} is registered with it
* @param workerCount the count of {@link Worker}'s to create
*/
AbstractNioWorkerPool(Executor workerExecutor, int workerCount, boolean allowShutDownOnIdle) {
protected AbstractNioWorkerPool(Executor workerExecutor, int workerCount, boolean allowShutDownOnIdle) {
if (workerExecutor == null) {
throw new NullPointerException("workerExecutor");
}

2
transport/src/main/java/io/netty/channel/socket/nio/NioWorker.java
View File

@ -36,7 +36,7 @@ import java.util.concurrent.Executor;
public class NioWorker extends AbstractNioWorker {
private final SocketReceiveBufferPool recvBufferPool = new SocketReceiveBufferPool();
protected final ReceiveBufferPool recvBufferPool = new ReceiveBufferPool();
public NioWorker(Executor executor) {
super(executor);

6
transport/src/main/java/io/netty/channel/socket/nio/SocketReceiveBufferPool.java → transport/src/main/java/io/netty/channel/socket/nio/ReceiveBufferPool.java
View File

@ -18,14 +18,14 @@ package io.netty.channel.socket.nio;
import java.lang.ref.SoftReference;
import java.nio.ByteBuffer;
final class SocketReceiveBufferPool {
public final class ReceiveBufferPool {
private static final int POOL_SIZE = 8;
@SuppressWarnings("unchecked")
private final SoftReference<ByteBuffer>[] pool = new SoftReference[POOL_SIZE];
ByteBuffer acquire(int size) {
public ByteBuffer acquire(int size) {
final SoftReference<ByteBuffer>[] pool = this.pool;
for (int i = 0; i < POOL_SIZE; i ++) {
SoftReference<ByteBuffer> ref = pool[i];
@ -53,7 +53,7 @@ final class SocketReceiveBufferPool {
return buf;
}
void release(ByteBuffer buffer) {
public void release(ByteBuffer buffer) {
final SoftReference<ByteBuffer>[] pool = this.pool;
for (int i = 0; i < POOL_SIZE; i ++) {
SoftReference<ByteBuffer> ref = pool[i];

4
transport/src/main/java/io/netty/channel/socket/nio/SelectorUtil.java
View File

@ -22,11 +22,11 @@ import java.nio.channels.Selector;
import io.netty.logging.InternalLogger;
import io.netty.logging.InternalLoggerFactory;
final class SelectorUtil {
public final class SelectorUtil {
private static final InternalLogger logger =
InternalLoggerFactory.getInstance(SelectorUtil.class);
static final int DEFAULT_IO_THREADS = Runtime.getRuntime().availableProcessors() * 2;
public static final int DEFAULT_IO_THREADS = Runtime.getRuntime().availableProcessors() * 2;
// Workaround for JDK NIO bug.
//

57
transport/src/main/java/io/netty/channel/socket/nio/SocketSendBufferPool.java → transport/src/main/java/io/netty/channel/socket/nio/SendBufferPool.java
View File

@ -25,21 +25,22 @@ import java.nio.channels.WritableByteChannel;
import io.netty.buffer.ChannelBuffer;
import io.netty.channel.FileRegion;
final class SocketSendBufferPool {
public class SendBufferPool {
private static final SendBuffer EMPTY_BUFFER = new EmptySendBuffer();
private static final int DEFAULT_PREALLOCATION_SIZE = 65536;
private static final int ALIGN_SHIFT = 4;
private static final int ALIGN_MASK = 15;
public static final int DEFAULT_PREALLOCATION_SIZE = 65536;
public static final int ALIGN_SHIFT = 4;
public static final int ALIGN_MASK = 15;
PreallocationRef poolHead;
Preallocation current = new Preallocation(DEFAULT_PREALLOCATION_SIZE);
protected PreallocationRef poolHead;
protected Preallocation current = new Preallocation(DEFAULT_PREALLOCATION_SIZE);
SocketSendBufferPool() {
public SendBufferPool() {
}
SendBuffer acquire(Object message) {
public SendBuffer acquire(Object message) {
if (message instanceof ChannelBuffer) {
return acquire((ChannelBuffer) message);
} else if (message instanceof FileRegion) {
@ -50,7 +51,7 @@ final class SocketSendBufferPool {
"unsupported message type: " + message.getClass());
}
private SendBuffer acquire(FileRegion src) {
protected SendBuffer acquire(FileRegion src) {
if (src.getCount() == 0) {
return EMPTY_BUFFER;
}
@ -103,7 +104,7 @@ final class SocketSendBufferPool {
return dst;
}
private Preallocation getPreallocation() {
protected Preallocation getPreallocation() {
Preallocation current = this.current;
if (current.refCnt == 0) {
current.buffer.clear();
@ -112,8 +113,8 @@ final class SocketSendBufferPool {
return getPreallocation0();
}
private Preallocation getPreallocation0() {
protected Preallocation getPreallocation0() {
PreallocationRef ref = poolHead;
if (ref != null) {
do {
@ -132,7 +133,7 @@ final class SocketSendBufferPool {
return new Preallocation(DEFAULT_PREALLOCATION_SIZE);
}
private static int align(int pos) {
protected static int align(int pos) {
int q = pos >>> ALIGN_SHIFT;
int r = pos & ALIGN_MASK;
if (r != 0) {
@ -141,25 +142,25 @@ final class SocketSendBufferPool {
return q << ALIGN_SHIFT;
}
private static final class Preallocation {
final ByteBuffer buffer;
int refCnt;
public static final class Preallocation {
public final ByteBuffer buffer;
public int refCnt;
Preallocation(int capacity) {
public Preallocation(int capacity) {
buffer = ByteBuffer.allocateDirect(capacity);
}
}
private final class PreallocationRef extends SoftReference<Preallocation> {
public final class PreallocationRef extends SoftReference<Preallocation> {
final PreallocationRef next;
PreallocationRef(Preallocation prealloation, PreallocationRef next) {
public PreallocationRef(Preallocation prealloation, PreallocationRef next) {
super(prealloation);
this.next = next;
}
}
interface SendBuffer {
public interface SendBuffer {
boolean finished();
long writtenBytes();
long totalBytes();
@ -170,12 +171,12 @@ final class SocketSendBufferPool {
void release();
}
static class UnpooledSendBuffer implements SendBuffer {
public class UnpooledSendBuffer implements SendBuffer {
final ByteBuffer buffer;
protected final ByteBuffer buffer;
final int initialPos;
UnpooledSendBuffer(ByteBuffer buffer) {
public UnpooledSendBuffer(ByteBuffer buffer) {
this.buffer = buffer;
initialPos = buffer.position();
}
@ -211,13 +212,13 @@ final class SocketSendBufferPool {
}
}
final class PooledSendBuffer implements SendBuffer {
public class PooledSendBuffer implements SendBuffer {
private final Preallocation parent;
final ByteBuffer buffer;
protected final Preallocation parent;
public final ByteBuffer buffer;
final int initialPos;
PooledSendBuffer(Preallocation parent, ByteBuffer buffer) {
public PooledSendBuffer(Preallocation parent, ByteBuffer buffer) {
this.parent = parent;
this.buffer = buffer;
initialPos = buffer.position();
@ -260,7 +261,7 @@ final class SocketSendBufferPool {
}
}
static final class FileSendBuffer implements SendBuffer {
final class FileSendBuffer implements SendBuffer {
private final FileRegion file;
private long writtenBytes;