fr.dyade.aaa.util
Class Pipe

java.lang.Object
  fr.dyade.aaa.util.Pipe

public class Pipe

extends java.lang.Object

Field Summary

protected java.lang.Object[]	buffer The circular buffer into which incoming data is placed.
static int	DFLT_BUF_SIZE
static java.lang.String	DFLT_DIR
static java.lang.String	DFLT_NAME
protected java.io.RandomAccessFile	fbufin
protected long	fbufinptr The index of the position in the file buffer at which the next piece of data will be read.
protected java.io.RandomAccessFile	fbufout
protected long	fbufoutptr The index of the position in the file buffer at which the next piece of data will be write.
protected int	in The index of the position in the circular buffer at which the next byte of data will be stored when received from the connected piped output stream.
protected java.lang.String	name
protected int	out The index of the position in the circular buffer at which the next byte of data will be read by this piped input stream.
protected int	size

Constructor Summary

Pipe()
Creates a Pipe with default size for memory buffer.

Pipe(int size, java.lang.String name, java.lang.String dir)
Creates a Pipe with specified size for in memory buffer.

Method Summary

int	getBufferSize()
int	getSizeInFile()
int	read(java.lang.Object[] buf)
void	write(byte[] msg)

Methods inherited from class java.lang.Object

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

Field Detail

name

protected java.lang.String name

size

protected int size

in

protected int in

The index of the position in the circular buffer at which the next byte of data will be stored when received from the connected piped output stream. in<0 implies the buffer is empty, in==out implies the buffer is full

out

protected int out

The index of the position in the circular buffer at which the next byte of data will be read by this piped input stream.

DFLT_BUF_SIZE

public static final int DFLT_BUF_SIZE

See Also:

Constant Field Values

DFLT_NAME

public static final java.lang.String DFLT_NAME

See Also:

Constant Field Values

DFLT_DIR

public static final java.lang.String DFLT_DIR

buffer

protected java.lang.Object[] buffer

The circular buffer into which incoming data is placed.

fbufinptr

protected long fbufinptr

The index of the position in the file buffer at which the next piece of data will be read.

fbufoutptr

protected long fbufoutptr

The index of the position in the file buffer at which the next piece of data will be write. in<0 implies the buffer is empty.

fbufin

protected java.io.RandomAccessFile fbufin

fbufout

protected java.io.RandomAccessFile fbufout

Constructor Detail

Pipe

public Pipe()
     throws java.io.IOException

Creates a Pipe with default size for memory buffer.

Pipe

public Pipe(int size,
            java.lang.String name,
            java.lang.String dir)
     throws java.io.IOException

Creates a Pipe with specified size for in memory buffer.

Parameters:

size - the size for in memory buffer.

Method Detail

getBufferSize

public final int getBufferSize()

getSizeInFile

public final int getSizeInFile()

write

public void write(byte[] msg)
           throws java.io.IOException

Throws:

java.io.IOException

read

public int read(java.lang.Object[] buf)
         throws java.io.IOException

Throws:

java.io.IOException