Package rx.internal.util.unsafe
Class SpmcArrayQueue<E>
- java.lang.Object
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- java.util.AbstractCollection<E>
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- java.util.AbstractQueue<E>
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- rx.internal.util.unsafe.ConcurrentCircularArrayQueueL0Pad<E>
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- rx.internal.util.unsafe.ConcurrentCircularArrayQueue<E>
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- rx.internal.util.unsafe.SpmcArrayQueueL1Pad<E>
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- rx.internal.util.unsafe.SpmcArrayQueueProducerField<E>
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- rx.internal.util.unsafe.SpmcArrayQueueL2Pad<E>
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- rx.internal.util.unsafe.SpmcArrayQueueConsumerField<E>
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- rx.internal.util.unsafe.SpmcArrayQueueMidPad<E>
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- rx.internal.util.unsafe.SpmcArrayQueueProducerIndexCacheField<E>
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- rx.internal.util.unsafe.SpmcArrayQueueL3Pad<E>
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- rx.internal.util.unsafe.SpmcArrayQueue<E>
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- All Implemented Interfaces:
java.lang.Iterable<E>
,java.util.Collection<E>
,java.util.Queue<E>
,MessagePassingQueue<E>
@SuppressAnimalSniffer public final class SpmcArrayQueue<E> extends SpmcArrayQueueL3Pad<E>
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Field Summary
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Fields inherited from class rx.internal.util.unsafe.SpmcArrayQueueL3Pad
p30, p31, p32, p33, p34, p35, p36, p37, p40, p41, p42, p43, p44, p45, p46
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Fields inherited from class rx.internal.util.unsafe.SpmcArrayQueueMidPad
p20, p21, p22, p23, p24, p25, p26
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Fields inherited from class rx.internal.util.unsafe.SpmcArrayQueueConsumerField
C_INDEX_OFFSET
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Fields inherited from class rx.internal.util.unsafe.SpmcArrayQueueProducerField
P_INDEX_OFFSET
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Fields inherited from class rx.internal.util.unsafe.SpmcArrayQueueL1Pad
p10, p11, p12, p13, p14, p15, p16
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Fields inherited from class rx.internal.util.unsafe.ConcurrentCircularArrayQueue
buffer, BUFFER_PAD, mask, SPARSE_SHIFT
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Constructor Summary
Constructors Constructor Description SpmcArrayQueue(int capacity)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
isEmpty()
This method's accuracy is subject to concurrent modifications happening as the observation is carried out.boolean
offer(E e)
Called from a producer thread subject to the restrictions appropriate to the implementation and according to theQueue.offer(Object)
interface.E
peek()
Called from the consumer thread subject to the restrictions appropriate to the implementation and according to theQueue.peek()
interface.E
poll()
Called from the consumer thread subject to the restrictions appropriate to the implementation and according to theQueue.poll()
interface.int
size()
This method's accuracy is subject to concurrent modifications happening as the size is estimated and as such is a best effort rather than absolute value.-
Methods inherited from class rx.internal.util.unsafe.SpmcArrayQueueProducerIndexCacheField
lvProducerIndexCache, svProducerIndexCache
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Methods inherited from class rx.internal.util.unsafe.SpmcArrayQueueConsumerField
casHead, lvConsumerIndex
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Methods inherited from class rx.internal.util.unsafe.SpmcArrayQueueProducerField
lvProducerIndex, soTail
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Methods inherited from class rx.internal.util.unsafe.ConcurrentCircularArrayQueue
calcElementOffset, calcElementOffset, clear, iterator, lpElement, lpElement, lvElement, lvElement, soElement, soElement, spElement, spElement
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Methods inherited from class java.util.AbstractCollection
contains, containsAll, remove, removeAll, retainAll, toArray, toArray, toString
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Method Detail
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offer
public boolean offer(E e)
Description copied from interface:MessagePassingQueue
Called from a producer thread subject to the restrictions appropriate to the implementation and according to theQueue.offer(Object)
interface.- Returns:
- true if element was inserted into the queue, false iff full
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poll
public E poll()
Description copied from interface:MessagePassingQueue
Called from the consumer thread subject to the restrictions appropriate to the implementation and according to theQueue.poll()
interface.- Returns:
- a message from the queue if one is available, null iff empty
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peek
public E peek()
Description copied from interface:MessagePassingQueue
Called from the consumer thread subject to the restrictions appropriate to the implementation and according to theQueue.peek()
interface.- Returns:
- a message from the queue if one is available, null iff empty
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size
public int size()
Description copied from interface:MessagePassingQueue
This method's accuracy is subject to concurrent modifications happening as the size is estimated and as such is a best effort rather than absolute value. For some implementations this method may be O(n) rather than O(1).- Specified by:
size
in interfacejava.util.Collection<E>
- Specified by:
size
in interfaceMessagePassingQueue<E>
- Specified by:
size
in classjava.util.AbstractCollection<E>
- Returns:
- number of messages in the queue, between 0 and queue capacity or
Integer.MAX_VALUE
if not bounded
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isEmpty
public boolean isEmpty()
Description copied from interface:MessagePassingQueue
This method's accuracy is subject to concurrent modifications happening as the observation is carried out.- Specified by:
isEmpty
in interfacejava.util.Collection<E>
- Specified by:
isEmpty
in interfaceMessagePassingQueue<E>
- Overrides:
isEmpty
in classjava.util.AbstractCollection<E>
- Returns:
- true if empty, false otherwise
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