Class AbstractKQueueStreamChannel

java.lang.Object

io.netty.util.DefaultAttributeMap

io.netty.channel.AbstractChannel

io.netty.channel.kqueue.AbstractKQueueStreamChannel

All Implemented Interfaces:

Channel, ChannelOutboundInvoker, DuplexChannel, UnixChannel, AttributeMap, Comparable<Channel>

Direct Known Subclasses:

KQueueDomainSocketChannel, KQueueSocketChannel

public abstract class AbstractKQueueStreamChannel
extends AbstractChannel
implements DuplexChannel

Nested Class Summary

Nested classes/interfaces inherited from class AbstractChannel

AbstractChannel.AbstractUnsafe

Nested classes/interfaces inherited from interface Channel

Channel.Unsafe

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	active

Method Summary

Modifier and Type	Method	Description
protected static void	checkResolvable(InetSocketAddress addr)
abstract KQueueChannelConfig	config()	Returns the configuration of this channel.
protected final void	doBeginRead()	Schedule a read operation.
protected void	doBind(SocketAddress local)	Bind the Channel to the SocketAddress
protected void	doClose()	Close the Channel
protected boolean	doConnect(SocketAddress remoteAddress, SocketAddress localAddress)	Connect to the remote peer
protected boolean	doConnect0(SocketAddress remoteAddress, SocketAddress localAddress)
protected void	doDeregister()	Deregister the Channel from its EventLoop.
protected void	doDisconnect()	Disconnect this Channel from its remote peer
protected final int	doReadBytes(ByteBuf byteBuf)	Read bytes into the given ByteBuf and return the amount.
protected void	doRegister(ChannelPromise promise)	Is called after the Channel is registered with its EventLoop as part of the register process.
protected final void	doShutdownOutput()	Called when conditions justify shutting down the output portion of the channel.
protected void	doWrite(ChannelOutboundBuffer in)	Flush the content of the given buffer to the remote peer.
protected final int	doWriteBytes(ChannelOutboundBuffer in, ByteBuf buf)
protected int	doWriteSingle(ChannelOutboundBuffer in)	Attempt to write a single object.
final FileDescriptor	fd()	Returns the FileDescriptor that is used by this Channel.
protected Object	filterOutboundMessage(Object msg)	Invoked when a new message is added to a ChannelOutboundBuffer of this AbstractChannel, so that the Channel implementation converts the message to another.
boolean	isActive()	Return true if the Channel is active and so connected.
protected boolean	isCompatible(EventLoop loop)	Return true if the given EventLoop is compatible with this instance.
boolean	isInputShutdown()	Returns true if and only if the remote peer shut down its output so that no more data is received from this channel.
boolean	isOpen()	Returns true if the Channel is open and may get active later
boolean	isOutputShutdown()
boolean	isShutdown()	Determine if both the input and output of this channel have been shutdown.
protected SocketAddress	localAddress0()	Returns the SocketAddress which is bound locally.
ChannelMetadata	metadata()	Return the ChannelMetadata of the Channel which describe the nature of the Channel.
protected final ByteBuf	newDirectBuffer(ByteBuf buf)	Returns an off-heap copy of the specified ByteBuf, and releases the original one.
protected final ByteBuf	newDirectBuffer(Object holder, ByteBuf buf)	Returns an off-heap copy of the specified ByteBuf, and releases the specified holder.
protected io.netty.channel.kqueue.AbstractKQueueChannel.AbstractKQueueUnsafe	newUnsafe()	Create a new AbstractChannel.AbstractUnsafe instance which will be used for the life-time of the Channel
protected final IoRegistration	registration()
protected SocketAddress	remoteAddress0()	Return the SocketAddress which the Channel is connected to.
ChannelFuture	shutdown()	Will shutdown the input and output sides of this channel.
ChannelFuture	shutdown(ChannelPromise promise)	Will shutdown the input and output sides of this channel.
ChannelFuture	shutdownInput()
ChannelFuture	shutdownInput(ChannelPromise promise)	Will shutdown the input and notify ChannelPromise.
ChannelFuture	shutdownOutput()
ChannelFuture	shutdownOutput(ChannelPromise promise)	Will shutdown the output and notify ChannelPromise.

Methods inherited from class AbstractChannel

closeFuture, compareTo, doRegister, equals, eventLoop, hashCode, id, invalidateLocalAddress, invalidateRemoteAddress, isRegistered, localAddress, maxMessagesPerWrite, newChannelPipeline, newId, parent, pipeline, remoteAddress, toString, unsafe, validateFileRegion, voidPromise

Methods inherited from class DefaultAttributeMap

attr, hasAttr

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface AttributeMap

attr, hasAttr

Methods inherited from interface Channel

alloc, bind, bind, bytesBeforeUnwritable, bytesBeforeWritable, close, close, closeFuture, config, connect, connect, connect, connect, deregister, deregister, disconnect, disconnect, eventLoop, flush, getOption, id, isActive, isOpen, isRegistered, isWritable, localAddress, newFailedFuture, newProgressivePromise, newPromise, newSucceededFuture, parent, pipeline, read, remoteAddress, setOption, unsafe, voidPromise, write, write, writeAndFlush, writeAndFlush

Methods inherited from interface Comparable

compareTo

Field Details

active

protected volatile boolean active

Method Details

newUnsafe

protected io.netty.channel.kqueue.AbstractKQueueChannel.AbstractKQueueUnsafe newUnsafe()

Description copied from class: AbstractChannel

Create a new AbstractChannel.AbstractUnsafe instance which will be used for the life-time of the Channel

metadata

public ChannelMetadata metadata()

Description copied from interface: Channel

Return the ChannelMetadata of the Channel which describe the nature of the Channel.

Specified by:

metadata in interface Channel

doWrite

protected void doWrite(ChannelOutboundBuffer in)
                throws Exception

Description copied from class: AbstractChannel

Flush the content of the given buffer to the remote peer.

Specified by:

doWrite in class AbstractChannel

Throws:

Exception

doWriteSingle

protected int doWriteSingle(ChannelOutboundBuffer in)
                     throws Exception

Attempt to write a single object.

Parameters:

in - the collection which contains objects to write.

Returns:

The value that should be decremented from the write quantum which starts at ChannelConfig.getWriteSpinCount(). The typical use cases are as follows:

• 0 - if no write was attempted. This is appropriate if an empty ByteBuf (or other empty content) is encountered
• 1 - if a single call to write data was made to the OS
• ChannelUtils.WRITE_STATUS_SNDBUF_FULL - if an attempt to write data was made to the OS, but no data was accepted

Throws:

Exception - If an I/O error occurs.

filterOutboundMessage

protected Object filterOutboundMessage(Object msg)

Description copied from class: AbstractChannel

Invoked when a new message is added to a ChannelOutboundBuffer of this AbstractChannel, so that the Channel implementation converts the message to another. (e.g. heap buffer -> direct buffer)

Overrides:

filterOutboundMessage in class AbstractChannel

doShutdownOutput

@UnstableApi
protected final void doShutdownOutput()
                               throws Exception

Description copied from class: AbstractChannel

Called when conditions justify shutting down the output portion of the channel. This may happen if a write operation throws an exception.

Overrides:

doShutdownOutput in class AbstractChannel

Throws:

Exception

isOutputShutdown

public boolean isOutputShutdown()

Specified by:

isOutputShutdown in interface DuplexChannel

See Also:

• Socket.isOutputShutdown()

isInputShutdown

public boolean isInputShutdown()

Description copied from interface: DuplexChannel

Returns true if and only if the remote peer shut down its output so that no more data is received from this channel. Note that the semantic of this method is different from that of Socket.shutdownInput() and Socket.isInputShutdown().

Specified by:

isInputShutdown in interface DuplexChannel

isShutdown

public boolean isShutdown()

Description copied from interface: DuplexChannel

Determine if both the input and output of this channel have been shutdown.

Specified by:

isShutdown in interface DuplexChannel

shutdownOutput

public ChannelFuture shutdownOutput()

Specified by:

shutdownOutput in interface DuplexChannel

See Also:

• Socket.shutdownOutput()

shutdownOutput

public ChannelFuture shutdownOutput(ChannelPromise promise)

Description copied from interface: DuplexChannel

Will shutdown the output and notify ChannelPromise.

Specified by:

shutdownOutput in interface DuplexChannel

See Also:

• Socket.shutdownOutput()

shutdownInput

public ChannelFuture shutdownInput()

Specified by:

shutdownInput in interface DuplexChannel

See Also:

• Socket.shutdownInput()

shutdownInput

public ChannelFuture shutdownInput(ChannelPromise promise)

Description copied from interface: DuplexChannel

Will shutdown the input and notify ChannelPromise.

Specified by:

shutdownInput in interface DuplexChannel

See Also:

• Socket.shutdownInput()

shutdown

public ChannelFuture shutdown()

Description copied from interface: DuplexChannel

Will shutdown the input and output sides of this channel.

Specified by:

shutdown in interface DuplexChannel

Returns:

will be completed when both shutdown operations complete.

shutdown

public ChannelFuture shutdown(ChannelPromise promise)

Description copied from interface: DuplexChannel

Will shutdown the input and output sides of this channel.

Specified by:

shutdown in interface DuplexChannel

Parameters:

promise - will be completed when both shutdown operations complete.

Returns:

will be completed when both shutdown operations complete.

isCompatible

protected boolean isCompatible(EventLoop loop)

Description copied from class: AbstractChannel

Return true if the given EventLoop is compatible with this instance.

Specified by:

isCompatible in class AbstractChannel

registration

protected final IoRegistration registration()

fd

public final FileDescriptor fd()

Description copied from interface: UnixChannel

Returns the FileDescriptor that is used by this Channel.

Specified by:

fd in interface UnixChannel

isActive

public boolean isActive()

Description copied from interface: Channel

Return true if the Channel is active and so connected.

Specified by:

isActive in interface Channel

doClose

protected void doClose()
                throws Exception

Description copied from class: AbstractChannel

Close the Channel

Specified by:

doClose in class AbstractChannel

Throws:

Exception

doDisconnect

protected void doDisconnect()
                     throws Exception

Description copied from class: AbstractChannel

Disconnect this Channel from its remote peer

Specified by:

doDisconnect in class AbstractChannel

Throws:

Exception

isOpen

public boolean isOpen()

Description copied from interface: Channel

Returns true if the Channel is open and may get active later

Specified by:

isOpen in interface Channel

doDeregister

protected void doDeregister()
                     throws Exception

Description copied from class: AbstractChannel

Deregister the Channel from its EventLoop. Sub-classes may override this method

Overrides:

doDeregister in class AbstractChannel

Throws:

Exception

doBeginRead

protected final void doBeginRead()
                          throws Exception

Description copied from class: AbstractChannel

Schedule a read operation.

Specified by:

doBeginRead in class AbstractChannel

Throws:

Exception

doRegister

protected void doRegister(ChannelPromise promise)

Description copied from class: AbstractChannel

Is called after the Channel is registered with its EventLoop as part of the register process. Subclasses may override this method

Overrides:

doRegister in class AbstractChannel

Parameters:

promise - ChannelPromise that must be notified once done to continue the registration.

config

public abstract KQueueChannelConfig config()

Description copied from interface: Channel

Returns the configuration of this channel.

Specified by:

config in interface Channel

newDirectBuffer

protected final ByteBuf newDirectBuffer(ByteBuf buf)

Returns an off-heap copy of the specified ByteBuf, and releases the original one.

newDirectBuffer

protected final ByteBuf newDirectBuffer(Object holder,
 ByteBuf buf)

Returns an off-heap copy of the specified ByteBuf, and releases the specified holder. The caller must ensure that the holder releases the original ByteBuf when the holder is released by this method.

checkResolvable

protected static void checkResolvable(InetSocketAddress addr)

doReadBytes

protected final int doReadBytes(ByteBuf byteBuf)
                         throws Exception

Read bytes into the given ByteBuf and return the amount.

Throws:

Exception

doWriteBytes

protected final int doWriteBytes(ChannelOutboundBuffer in,
 ByteBuf buf)
                          throws Exception

Throws:

Exception

doBind

protected void doBind(SocketAddress local)
               throws Exception

Description copied from class: AbstractChannel

Bind the Channel to the SocketAddress

Specified by:

doBind in class AbstractChannel

Throws:

Exception

doConnect

protected boolean doConnect(SocketAddress remoteAddress,
 SocketAddress localAddress)
                     throws Exception

Connect to the remote peer

Throws:

Exception

doConnect0

protected boolean doConnect0(SocketAddress remoteAddress,
 SocketAddress localAddress)
                      throws Exception

Throws:

Exception

localAddress0

protected SocketAddress localAddress0()

Description copied from class: AbstractChannel

Returns the SocketAddress which is bound locally.

Specified by:

localAddress0 in class AbstractChannel

remoteAddress0

protected SocketAddress remoteAddress0()

Description copied from class: AbstractChannel

Return the SocketAddress which the Channel is connected to.

Specified by:

remoteAddress0 in class AbstractChannel