Package rs.baselib.util

Class SynchronizedQueue<E>

java.lang.Object

rs.baselib.util.SynchronizedQueue<E>

public class SynchronizedQueue<E>
extends Object

Implements a thread-safe synchronized object queue that also wakes up waiting threads.

Author:

ralph

Field Summary

Fields

Modifier and Type	Field	Description
protected List<E>	available	The object queue
protected int	capacity	The maximum number of objects to be held in this queue instance
static final int	MAX_CAPACITY	Default number of objects to hold in this queue

Constructor Summary

Constructors

Constructor	Description
SynchronizedQueue()	Constructor.
SynchronizedQueue(int capacity)	Constructor.

Method Summary

Modifier and Type	Method	Description
E	poll()	Delivers the next object from the queue.
void	push(E o)	Adds a new object to the list of available objects.

Methods inherited from class java.lang.Object

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

Field Details

MAX_CAPACITY

public static final int MAX_CAPACITY

Default number of objects to hold in this queue

See Also:

• Constant Field Values

available

protected List<E> available

The object queue

capacity

protected int capacity

The maximum number of objects to be held in this queue instance

Constructor Details

SynchronizedQueue

public SynchronizedQueue()

Constructor.

Will create the queue using MAX_CAPACITY as capacity.

SynchronizedQueue

public SynchronizedQueue(int capacity)

Constructor.

Parameters:

capacity - - capacity of this queue

Method Details

poll

public E poll()

Delivers the next object from the queue.

The method will block when no object is available.

Used by the reader/consumer thread.

Returns:

next object in queue

push

public void push(E o)

Adds a new object to the list of available objects.

The method will block when the queue is full.

Used by the writer/producer thread.

Parameters:

o - - the object to be queued