pl.allegro.tech.hermes.consumers.queue

Class FullDrainMpscQueue<T>

java.lang.Object

pl.allegro.tech.hermes.consumers.queue.FullDrainMpscQueue<T>

All Implemented Interfaces:

MpscQueue<T>

public class FullDrainMpscQueue<T>
extends java.lang.Object
implements MpscQueue<T>

Constructor Summary

Constructors

Constructor and Description
FullDrainMpscQueue(int capacity)

Method Summary

Modifier and Type	Method and Description
int	capacity()
void	drain(org.jctools.queues.MessagePassingQueue.Consumer<T> consumer) The MpscArrayQueue.drain(MessagePassingQueue.Consumer) method may skip items with allocated slots by producers (who won CAS) but were not added to the queue yet.
boolean	offer(T element)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Detail

FullDrainMpscQueue

public FullDrainMpscQueue(int capacity)

Method Detail

offer

public boolean offer(T element)

Specified by:

offer in interface MpscQueue<T>

drain

public void drain(org.jctools.queues.MessagePassingQueue.Consumer<T> consumer)

The MpscArrayQueue.drain(MessagePassingQueue.Consumer) method may skip items with allocated slots by producers (who won CAS) but were not added to the queue yet. This may happen to broken elements chain. See explanation at http://psy-lob-saw.blogspot.com/2014/07/poll-me-maybe.html This is an alternative approach which waits for all items to become available by using MpscArrayQueue.poll() underneath (which spin-waits when getting next item).

Specified by:

drain in interface MpscQueue<T>

size

public int size()

Specified by:

size in interface MpscQueue<T>

capacity

public int capacity()

Specified by:

capacity in interface MpscQueue<T>