de.uni_hildesheim.sse.monitoring.runtime.boot

Class ObjectPool<T extends Poolable<T>>

java.lang.Object

de.uni_hildesheim.sse.monitoring.runtime.boot.ObjectPool<T>

Type Parameters:

T - the poolable type

public class ObjectPool<T extends Poolable<T>>
extends java.lang.Object

Defines an reusable object pool.

Author:

Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field and Description
private int	maxSize Stores the maximum size of the pool.
private ArrayList<T>	pool Stores the pool.
private T	prototype Stores a prototype instance for creating instances.

Constructor Summary

Constructors

Constructor and Description
ObjectPool(T prototype) Creates a new unlimited pool.
ObjectPool(T prototype, int maxSize) Creates a new pool.

Method Summary

Modifier and Type	Method and Description
T	getFromPool() Returns an instance from the shared pool.
void	release(T instance) Releases and clears the specified instance to the shared pool.
int	size() Returns the size of the pool.

Methods inherited from class java.lang.Object

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

Field Detail

pool

private ArrayList<T extends Poolable<T>> pool

Stores the pool.

prototype

private T extends Poolable<T> prototype

Stores a prototype instance for creating instances.

maxSize

private int maxSize

Stores the maximum size of the pool. If 0, no maximum size is given ant the pool may grow as needed (may be inefficient).

Constructor Detail

ObjectPool

public ObjectPool(T prototype)

Creates a new unlimited pool.

Parameters:

prototype - the prototype instance for object creation (must not be null)

Since:

1.00

ObjectPool

public ObjectPool(T prototype,
                  int maxSize)

Creates a new pool.

Parameters:

prototype - the prototype instance for object creation (must not be null)

maxSize - the maximum size of the pool

Since:

1.00

Method Detail

getFromPool

public final T getFromPool()

Returns an instance from the shared pool.

Returns:

the instance from the pool. This instance has to be released by release(Poolable).

Since:

SugiBib 1.20

release

public final void release(T instance)

Releases and clears the specified instance to the shared pool.

Parameters:

instance - the instance to be released (must not be null)

size

public int size()

Returns the size of the pool.

Returns:

the current size of the pool

Since:

1.00