org.apache.ignite.internal.processors.query.h2

Class ConcurrentStripedPool<E>

java.lang.Object

org.apache.ignite.internal.processors.query.h2.ConcurrentStripedPool<E>

All Implemented Interfaces:

Iterable<E>

public class ConcurrentStripedPool<E>
extends Object
implements Iterable<E>

Concurrent pool of object based on ConcurrentLinkedDeque.

Constructor Summary

Constructors

Constructor and Description
ConcurrentStripedPool(int stripes, int maxPoolSize) Constructor.

Method Summary

Modifier and Type	Method and Description
E	borrow() Retrieves element from pool, or returns null if the pool is empty.
void	clear() Removes all of the elements from the pool..
void	forEach(Consumer<? super E> action) Performs the given action for each element of the pool until all elements have been processed or the action throws an exception.
@NotNull Iterator<E>	iterator()
boolean	recycle(E e) Pushes an element onto the pool.
void	resize(int size)
Stream<E>	stream() Returns a sequential Stream of the pool.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

spliterator

Constructor Detail

ConcurrentStripedPool

public ConcurrentStripedPool(int stripes,
                             int maxPoolSize)

Constructor.

Parameters:

stripes - Count of stripes.

maxPoolSize - Max pool size.

Method Detail

recycle

public boolean recycle(E e)

Pushes an element onto the pool.

Parameters:

e - the element to push

Returns:

true if the element is returned to the pool, false if the is no space at the pool.

Throws:

NullPointerException - if the specified element is null and this deque does not permit null elements

borrow

public E borrow()

Retrieves element from pool, or returns null if the pool is empty.

Returns:

the element of the pool, or null if the pool is empty.

forEach

public void forEach(Consumer<? super E> action)

Performs the given action for each element of the pool until all elements have been processed or the action throws an exception. Exceptions thrown by the action are relayed to the caller.

Specified by:

forEach in interface Iterable<E>

Parameters:

action - The action to be performed for each element

Throws:

NullPointerException - if the specified action is null

clear

public void clear()

Removes all of the elements from the pool..

iterator

@NotNull
public @NotNull Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

stream

public Stream<E> stream()

Returns a sequential Stream of the pool.

Returns:

a sequential Stream over the elements iof the pool.

resize

public void resize(int size)

Parameters:

size - New max pool size.