com.gemstone.gemfire.internal.shared

Class OutputStreamChannel

java.lang.Object

java.io.OutputStream

com.gemstone.gemfire.internal.shared.OutputStreamChannel

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, Channel, WritableByteChannel

Direct Known Subclasses:

ChannelBufferOutputStream, ChannelBufferUnsafeOutputStream

public abstract class OutputStreamChannel
extends OutputStream
implements WritableByteChannel, Closeable

Intermediate class that extends both an OutputStream and WritableByteChannel.

Since:

gfxd 1.1

Field Summary

Fields

Modifier and Type	Field and Description
protected long	bytesWritten
protected WritableByteChannel	channel
protected static long	PARK_NANOS_MAX Maximum nanos to park reader thread to wait for writing data in non-blocking mode (if selector is present then it will explicitly signal)
protected Thread	parkedThread

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	OutputStreamChannel(WritableByteChannel channel)

Method Summary

Modifier and Type	Method and Description
protected boolean	flushBufferNonBlockingBase(ByteBuffer buffer)
long	getBytesWritten()
Thread	getParkedThread()
protected long	getParkNanosMax()
WritableByteChannel	getUnderlyingChannel() Get the underlying WritableByteChannel.
abstract int	write(ByteBuffer src)
protected int	writeBuffer(ByteBuffer buffer, WritableByteChannel channel)
protected int	writeBuffered(ByteBuffer src, ByteBuffer channelBuffer) Common base method to write a given ByteBuffer source via an intermediate direct byte buffer owned by the implementation of this class (if required).
protected int	writeBufferNonBlocking(ByteBuffer buffer, WritableByteChannel channel)
abstract void	writeInt(int v) Writes an int value, which is comprised of four bytes, to the output stream in big-endian format compatible with DataOutput.writeInt(int).

Methods inherited from class java.io.OutputStream

close, flush, write, write, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.nio.channels.Channel

close, isOpen

Field Detail

channel

protected final WritableByteChannel channel

parkedThread

protected volatile Thread parkedThread

bytesWritten

protected volatile long bytesWritten

PARK_NANOS_MAX

protected static final long PARK_NANOS_MAX

Maximum nanos to park reader thread to wait for writing data in non-blocking mode (if selector is present then it will explicitly signal)

See Also:

Constant Field Values

Constructor Detail

OutputStreamChannel

protected OutputStreamChannel(WritableByteChannel channel)

Method Detail

getUnderlyingChannel

public final WritableByteChannel getUnderlyingChannel()

Get the underlying WritableByteChannel.

write

public abstract int write(ByteBuffer src)
                   throws IOException

Specified by:

write in interface WritableByteChannel

Throws:

IOException

writeInt

public abstract void writeInt(int v)
                       throws IOException

Writes an int value, which is comprised of four bytes, to the output stream in big-endian format compatible with DataOutput.writeInt(int).

Parameters:

v - the int value to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

DataOutput.writeInt(int)

writeBuffered

protected final int writeBuffered(ByteBuffer src,
                                  ByteBuffer channelBuffer)
                           throws IOException

Common base method to write a given ByteBuffer source via an intermediate direct byte buffer owned by the implementation of this class (if required).

Throws:

IOException

flushBufferNonBlockingBase

protected final boolean flushBufferNonBlockingBase(ByteBuffer buffer)
                                            throws IOException

Throws:

IOException

writeBuffer

protected int writeBuffer(ByteBuffer buffer,
                          WritableByteChannel channel)
                   throws IOException

Throws:

IOException

getParkNanosMax

protected long getParkNanosMax()

writeBufferNonBlocking

protected int writeBufferNonBlocking(ByteBuffer buffer,
                                     WritableByteChannel channel)
                              throws IOException

Throws:

IOException

getParkedThread

public final Thread getParkedThread()

getBytesWritten

public final long getBytesWritten()