com.gemstone.gemfire.internal.shared

Class ChannelBufferOutputStream

java.lang.Object

java.io.OutputStream

com.gemstone.gemfire.internal.shared.OutputStreamChannel

com.gemstone.gemfire.internal.shared.ChannelBufferOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, Channel, WritableByteChannel

Direct Known Subclasses:

ChannelBufferFramedOutputStream

public class ChannelBufferOutputStream
extends OutputStreamChannel

OutputStream for use by buffered write abstractions over channel using direct byte buffers. The implementation is not thread-safe by design. The class itself can be used as a non-synchronized efficient replacement of BufferedOutputStream.

Note that the close() method of this class does not closing the underlying channel.

Since:

gfxd 1.1

Field Summary

Fields

Modifier and Type	Field and Description
protected ByteBuffer	buffer
static int	DEFAULT_BUFFER_SIZE

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

bytesWritten, channel, PARK_NANOS_MAX, parkedThread

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected ByteBuffer	allocateBuffer(int bufferSize)
void	close()
void	flush()
protected void	flushBufferBlocking(ByteBuffer buffer)
boolean	isOpen()
void	write(byte[] b, int off, int len)
int	write(ByteBuffer src)
void	write(int b)
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 com.gemstone.gemfire.internal.shared.OutputStreamChannel

flushBufferNonBlockingBase, getBytesWritten, getParkedThread, getParkNanosMax, getUnderlyingChannel, writeBuffer, writeBuffered, writeBufferNonBlocking

Methods inherited from class java.io.OutputStream

write

Methods inherited from class java.lang.Object

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

Field Detail

buffer

protected final ByteBuffer buffer

DEFAULT_BUFFER_SIZE

public static final int DEFAULT_BUFFER_SIZE

See Also:

Constant Field Values

Constructor Detail

ChannelBufferOutputStream

public ChannelBufferOutputStream(WritableByteChannel channel)
                          throws IOException

Throws:

IOException

ChannelBufferOutputStream

public ChannelBufferOutputStream(WritableByteChannel channel,
                                 int bufferSize)
                          throws IOException

Throws:

IOException

Method Detail

allocateBuffer

protected ByteBuffer allocateBuffer(int bufferSize)

write

public final void write(int b)
                 throws IOException

Specified by:

write in class OutputStream

Throws:

IOException

write

public final void write(@Nonnull
                        byte[] b,
                        int off,
                        int len)
                 throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

write

public final int write(ByteBuffer src)
                throws IOException

Specified by:

write in interface WritableByteChannel

Specified by:

write in class OutputStreamChannel

Throws:

IOException

writeInt

public final 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).

Specified by:

writeInt in class OutputStreamChannel

Parameters:

v - the int value to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

DataOutput.writeInt(int)

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException

isOpen

public final boolean isOpen()

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Channel

Overrides:

close in class OutputStream

Throws:

IOException

flushBufferBlocking

protected void flushBufferBlocking(ByteBuffer buffer)
                            throws IOException

Throws:

IOException