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Java Source Code / Java Documentation » Science » javolution 5.2 » javolution.context

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

javolution.context .Allocator

Allocator

abstract public class Allocator (Code)

This class represents an object allocator; instances of this class are generated by AllocatorContext .

If an allocator has recycled objects available, those are returned first, before allocating new ones.

Allocator instances are thread-safe without synchronization, they are the "production lines" of the ObjectFactory factories , their implementation is derived from the AllocatorContext to which they belong (e.g. heap allocators for HeapContext ).

author:
   Jean-Marie Dautelle
version:
   5.2, August 14, 2007
See Also:   AllocatorContext.getAllocator(ObjectFactory)

Field Summary
protected boolean	keepInQueue Indicates if the objects from the queue should be kept in the queue.
protected Object/{T}/[]	queue Holds the queue of available objects (typically recycled).
protected int	queueSize Holds the number of objects in this allocator queue.
protected Thread	user Holds the current user or `null` if deactivated.

Constructor Summary
protected	Allocator() Default constructor.

Method Summary
abstract protected Object	allocate() Allocates a new object, this method is called when the allocator queue is empty.
final public Object	next() Returns the next available object from this allocator queue or Allocator.allocate one if none available.
abstract protected void	recycle(Object object) Recycles the specified object to this queue.
void	resize() Resizes this allocator queue (hopefully rare as implementation should keep the queue small).

Field Detail

keepInQueue
protected boolean keepInQueue(Code)
	Indicates if the objects from the queue should be kept in the queue.

queue
protected Object/{T}/[] queue(Code)
	Holds the queue of available objects (typically recycled).

queueSize
protected int queueSize(Code)
	Holds the number of objects in this allocator queue.

user
protected Thread user(Code)
	Holds the current user or `null` if deactivated.

Constructor Detail

Allocator
protected Allocator()(Code)
	Default constructor.

Method Detail

allocate
abstract protected Object allocate()(Code)
	Allocates a new object, this method is called when the allocator queue is empty. the allocated object.

next
final public Object next()(Code)
	Returns the next available object from this allocator queue or Allocator.allocate one if none available. the next available object ready to use.

recycle
abstract protected void recycle(Object object)(Code)
	Recycles the specified object to this queue. Parameters: object - the object to recycle.

resize
void resize()(Code)
	Resizes this allocator queue (hopefully rare as implementation should keep the queue small).

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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