com.gemstone.gemfire.internal.shared.unsafe

Class ChannelBufferUnsafeDataOutputStream

java.lang.Object

java.io.OutputStream

com.gemstone.gemfire.internal.shared.OutputStreamChannel

com.gemstone.gemfire.internal.shared.unsafe.ChannelBufferUnsafeOutputStream

com.gemstone.gemfire.internal.shared.unsafe.ChannelBufferUnsafeDataOutputStream

All Implemented Interfaces:

Closeable, DataOutput, Flushable, AutoCloseable, Channel, WritableByteChannel

Direct Known Subclasses:

ChannelBufferUnsafeFramedOutputStream

public class ChannelBufferUnsafeDataOutputStream
extends ChannelBufferUnsafeOutputStream
implements DataOutput

A buffered DataOutput abstraction over channel using direct byte buffers, and using internal Unsafe class for best performance. Users must check for UnsafeHolder.getDirectByteBufferAddressMethod() to be non-null before trying to use this class.

The implementation is not thread-safe by design. This particular class can be used as an efficient, buffered DataOutput implementation for file channels, socket channels and other similar.

Since:

gfxd 1.0

Field Summary

Fields inherited from class com.gemstone.gemfire.internal.shared.unsafe.ChannelBufferUnsafeOutputStream

addrLimit, addrPosition, baseAddress, buffer, MIN_BUFFER_SIZE, unsafe

Fields inherited from class com.gemstone.gemfire.internal.shared.OutputStreamChannel

channel, PARK_NANOS, PARK_NANOS_MAX, parkedThread

Constructor Summary

Constructors

Constructor and Description
ChannelBufferUnsafeDataOutputStream(WritableByteChannel channel)
ChannelBufferUnsafeDataOutputStream(WritableByteChannel channel, int bufferSize)

Method Summary

Methods

Modifier and Type	Method and Description
protected static long	putInt(long addrPos, int v)
protected static long	putShort(long addrPos, int v)
void	writeBoolean(boolean v)
void	writeByte(int v)
void	writeBytes(String s)
void	writeChar(int v)
void	writeChars(String s)
void	writeDouble(double v)
void	writeFloat(float v)
void	writeInt(int v)
void	writeLong(long v)
void	writeShort(int v)
void	writeUTF(String str)

Methods inherited from class com.gemstone.gemfire.internal.shared.unsafe.ChannelBufferUnsafeOutputStream

allocateBuffer, close, flush, flushBufferBlocking, flushBufferNonBlocking, isOpen, resetBufferPositions, write_, write, write, write, write

Methods inherited from class com.gemstone.gemfire.internal.shared.OutputStreamChannel

getParkedThread, getUnderlyingChannel, writeBuffer, writeBuffered, writeBufferNonBlocking

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.DataOutput

write, write, write

Constructor Detail

ChannelBufferUnsafeDataOutputStream

public ChannelBufferUnsafeDataOutputStream(WritableByteChannel channel)
                                    throws IOException

Throws:

IOException

ChannelBufferUnsafeDataOutputStream

public ChannelBufferUnsafeDataOutputStream(WritableByteChannel channel,
                                   int bufferSize)
                                    throws IOException

Throws:

IOException

Method Detail

writeBoolean

public final void writeBoolean(boolean v)
                        throws IOException

Specified by:

writeBoolean in interface DataOutput

Throws:

IOException

writeByte

public final void writeByte(int v)
                     throws IOException

Specified by:

writeByte in interface DataOutput

Throws:

IOException

writeShort

public final void writeShort(int v)
                      throws IOException

Specified by:

writeShort in interface DataOutput

Throws:

IOException

writeChar

public final void writeChar(int v)
                     throws IOException

Specified by:

writeChar in interface DataOutput

Throws:

IOException

writeInt

public final void writeInt(int v)
                    throws IOException

Specified by:

writeInt in interface DataOutput

Throws:

IOException

writeLong

public final void writeLong(long v)
                     throws IOException

Specified by:

writeLong in interface DataOutput

Throws:

IOException

writeFloat

public final void writeFloat(float v)
                      throws IOException

Specified by:

writeFloat in interface DataOutput

Throws:

IOException

writeDouble

public final void writeDouble(double v)
                       throws IOException

Specified by:

writeDouble in interface DataOutput

Throws:

IOException

writeBytes

public final void writeBytes(String s)
                      throws IOException

Specified by:

writeBytes in interface DataOutput

Throws:

IOException

writeChars

public final void writeChars(String s)
                      throws IOException

Specified by:

writeChars in interface DataOutput

Throws:

IOException

writeUTF

public final void writeUTF(String str)
                    throws IOException

Specified by:

writeUTF in interface DataOutput

Throws:

IOException

putShort

protected static final long putShort(long addrPos,
            int v)

putInt

protected static final long putInt(long addrPos,
          int v)