org.jboss.netty.channel.socket.nio
Interface NioDatagramChannelConfig

All Superinterfaces:

ChannelConfig, DatagramChannelConfig

public interface NioDatagramChannelConfig
extends DatagramChannelConfig

A DatagramChannelConfig for a NIO TCP/IP DatagramChannel.

Available options

In addition to the options provided by ChannelConfig and DatagramChannelConfig, NioDatagramChannelConfig allows the following options in the option map:

Name	Associated setter method
"writeBufferHighWaterMark"	setWriteBufferHighWaterMark(int)
"writeBufferLowWaterMark"	setWriteBufferLowWaterMark(int)
"writeSpinCount"	setWriteSpinCount(int)

Version:

$Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $

Author:

The Netty Project, Trustin Lee, Daniel Bevenius (dbevenius@jboss.com)

Method Summary

int	getWriteBufferHighWaterMark() Returns the high water mark of the write buffer.
int	getWriteBufferLowWaterMark() Returns the low water mark of the write buffer.
int	getWriteSpinCount() Returns the maximum loop count for a write operation until WritableByteChannel.write(ByteBuffer) returns a non-zero value.
void	setWriteBufferHighWaterMark(int writeBufferHighWaterMark) Sets the high water mark of the write buffer.
void	setWriteBufferLowWaterMark(int writeBufferLowWaterMark) Sets the low water mark of the write buffer.
void	setWriteSpinCount(int writeSpinCount) Sets the maximum loop count for a write operation until WritableByteChannel.write(ByteBuffer) returns a non-zero value.

Methods inherited from interface org.jboss.netty.channel.socket.DatagramChannelConfig

getInterface, getNetworkInterface, getReceiveBufferSize, getReceiveBufferSizePredictor, getReceiveBufferSizePredictorFactory, getSendBufferSize, getTimeToLive, getTrafficClass, isBroadcast, isLoopbackModeDisabled, isReuseAddress, setBroadcast, setInterface, setLoopbackModeDisabled, setNetworkInterface, setReceiveBufferSize, setReceiveBufferSizePredictor, setReceiveBufferSizePredictorFactory, setReuseAddress, setSendBufferSize, setTimeToLive, setTrafficClass

Methods inherited from interface org.jboss.netty.channel.ChannelConfig

getBufferFactory, getConnectTimeoutMillis, getPipelineFactory, setBufferFactory, setConnectTimeoutMillis, setOption, setOptions, setPipelineFactory

Method Detail

getWriteBufferHighWaterMark

int getWriteBufferHighWaterMark()

Returns the high water mark of the write buffer. If the number of bytes queued in the write buffer exceeds this value, Channel.isWritable() will start to return true.

setWriteBufferHighWaterMark

void setWriteBufferHighWaterMark(int writeBufferHighWaterMark)

Sets the high water mark of the write buffer. If the number of bytes queued in the write buffer exceeds this value, Channel.isWritable() will start to return true.

getWriteBufferLowWaterMark

int getWriteBufferLowWaterMark()

Returns the low water mark of the write buffer. Once the number of bytes queued in the write buffer exceeded the high water mark and then dropped down below this value, Channel.isWritable() will return false again.

setWriteBufferLowWaterMark

void setWriteBufferLowWaterMark(int writeBufferLowWaterMark)

Sets the low water mark of the write buffer. Once the number of bytes queued in the write buffer exceeded the high water mark and then dropped down below this value, Channel.isWritable() will return false again.

getWriteSpinCount

int getWriteSpinCount()

Returns the maximum loop count for a write operation until WritableByteChannel.write(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 16.

setWriteSpinCount

void setWriteSpinCount(int writeSpinCount)

Sets the maximum loop count for a write operation until WritableByteChannel.write(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 16.

Throws:

java.lang.IllegalArgumentException - if the specified value is 0 or less than 0