org.jflac.util

Class RingBuffer

java.lang.Object

org.jflac.util.RingBuffer

public class RingBuffer
extends Object

RingBuffer class.

Author:

David R Robison

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	buffer
protected int	bufferSize
protected static int	DEFAULT_BUFFER_SIZE
protected boolean	eof
protected int	getHere
protected int	putHere
protected Object	signal

Constructor Summary

Constructors

Constructor and Description
RingBuffer() Constructor.
RingBuffer(int size) Constructor.

Method Summary

Modifier and Type	Method and Description
void	empty() Empty the ring buffer.
int	get(byte[] data, int offset, int len) Read data from the ring buffer.
int	getAvailable() Return the bytes available for reading.
boolean	isEOF() Return EOF status.
static void	main(String[] args) Test main routine.
void	put(byte[] data, int offset, int len) Put data into the ring buffer.
int	putAvailable() return the space avaiable for writing.
void	resize(int newSize) Resize the ring buffer.
void	setEOF(boolean eof) Set the EOF status.
int	size() Return the size of the ring buffer.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_BUFFER_SIZE

protected static final int DEFAULT_BUFFER_SIZE

See Also:

Constant Field Values

bufferSize

protected volatile int bufferSize

buffer

protected byte[] buffer

putHere

protected volatile int putHere

getHere

protected volatile int getHere

eof

protected volatile boolean eof

signal

protected Object signal

Constructor Detail

RingBuffer

public RingBuffer(int size)

Constructor.

Parameters:

size - The size of the ring buffer

RingBuffer

public RingBuffer()

Constructor.

Method Detail

size

public int size()

Return the size of the ring buffer.

Returns:

The ring buffer size

resize

public void resize(int newSize)

Resize the ring buffer.

Parameters:

newSize - The new size of the ring buffer

putAvailable

public int putAvailable()

return the space avaiable for writing.

Returns:

The byte that may be written to the ring buffer

empty

public void empty()

Empty the ring buffer.

put

public void put(byte[] data,
                int offset,
                int len)

Put data into the ring buffer.

Parameters:

data - The data to write

offset - The start position in the data array

len - The bytes from the data array to write

getAvailable

public int getAvailable()

Return the bytes available for reading.

Returns:

The number of bytes that may be read from the ring buffer

get

public int get(byte[] data,
               int offset,
               int len)

Read data from the ring buffer.

Parameters:

data - Where to put the data

offset - The offset into the data array to start putting data

len - The maximum data to read

Returns:

The number of bytes read

isEOF

public boolean isEOF()

Return EOF status.

Returns:

True if EOF.

setEOF

public void setEOF(boolean eof)

Set the EOF status.

Parameters:

eof - The eof to set.

main

public static void main(String[] args)

Test main routine.

Parameters:

args - Not used