org.ka2ddo.yaac.io
Class NonshareableDoubleBufferedOutputStream

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          org.ka2ddo.yaac.io.NonshareableDoubleBufferedOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.Runnable

public final class NonshareableDoubleBufferedOutputStream
extends java.io.FilterOutputStream
implements java.lang.Runnable

This class is a duplicate of java.io.BufferedOutputStream, except that its methods are not synchronized, limiting its use to a single thread. However, it does create a thread of its own for background-parallel buffer flushing.

See Also:

BufferedOutputStream

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

NonshareableDoubleBufferedOutputStream(java.io.OutputStream out)
Creates a new buffered output stream to write data to the specified underlying output stream.

NonshareableDoubleBufferedOutputStream(java.io.OutputStream out, byte[] buf1, byte[] buf2)
Creates a new buffered output stream to write data to the specified underlying output stream with the specified buffer.

NonshareableDoubleBufferedOutputStream(java.io.OutputStream out, int size)
Creates a new buffered output stream to write data to the specified underlying output stream with the specified buffer size.

Method Summary

void	close()
void	flush() Flushes this buffered output stream.
void	run()
java.lang.String	toString()
void	write(byte[] b, int off, int len) Writes len bytes from the specified byte array starting at offset off to this buffered output stream.
void	write(int b) Writes the specified byte to this buffered output stream.
void	write2Ints(int v1, int v2) Writes two int values to the underlying output stream as two sequences of four bytes, high byte first.
void	writeInt(int v) Writes an int to the underlying output stream as four bytes, high byte first.

Methods inherited from class java.io.FilterOutputStream

write

Methods inherited from class java.lang.Object

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

Constructor Detail

NonshareableDoubleBufferedOutputStream

public NonshareableDoubleBufferedOutputStream(java.io.OutputStream out)

Creates a new buffered output stream to write data to the specified underlying output stream.

Parameters:

out - the underlying output stream.

NonshareableDoubleBufferedOutputStream

public NonshareableDoubleBufferedOutputStream(java.io.OutputStream out,
                                              int size)

Creates a new buffered output stream to write data to the specified underlying output stream with the specified buffer size.

Parameters:

out - the underlying output stream.

size - the buffer size.

Throws:

java.lang.IllegalArgumentException - if size <= 0.

NonshareableDoubleBufferedOutputStream

public NonshareableDoubleBufferedOutputStream(java.io.OutputStream out,
                                              byte[] buf1,
                                              byte[] buf2)

Creates a new buffered output stream to write data to the specified underlying output stream with the specified buffer.

Parameters:

out - the underlying output stream.

buf1 - byte array for first buffer

buf2 - byte array for second buffer; must be same length as first buffer

Throws:

java.lang.IllegalArgumentException - if size <= 0 or the buffer sizes aren't equal.

Method Detail

write

public void write(int b)
           throws java.io.IOException

Writes the specified byte to this buffered output stream.

Overrides:

write in class java.io.FilterOutputStream

Parameters:

b - the byte to be written.

Throws:

java.io.IOException - if an I/O error occurs.

writeInt

public final void writeInt(int v)
                    throws java.io.IOException

Writes an int to the underlying output stream as four bytes, high byte first.

Parameters:

v - an int to be written.

Throws:

java.io.IOException - if an I/O error occurs.

write2Ints

public final void write2Ints(int v1,
                             int v2)
                      throws java.io.IOException

Writes two int values to the underlying output stream as two sequences of four bytes, high byte first.

Parameters:

v1 - an int to be written.

v2 - another int to be written after the first int.

Throws:

java.io.IOException - if an I/O error occurs.

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Writes len bytes from the specified byte array starting at offset off to this buffered output stream.

Overrides:

write in class java.io.FilterOutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

java.io.IOException - if an I/O error occurs.

flush

public void flush()
           throws java.io.IOException

Flushes this buffered output stream. This forces any buffered output bytes to be written out to the underlying output stream.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.FilterOutputStream

Throws:

java.io.IOException - if an I/O error occurs.

run

public final void run()

Specified by:

run in interface java.lang.Runnable

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.FilterOutputStream

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object