Class MpscGrowableArrayQueue<E>
- java.lang.Object
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- java.util.AbstractCollection<E>
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- java.util.AbstractQueue<E>
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- com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueuePad1<E>
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- com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueueProducerFields<E>
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- com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueuePad2<E>
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- com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueueConsumerFields<E>
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- com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueuePad3<E>
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- com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueueColdProducerFields<E>
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- com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueue<E>
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- com.github.benmanes.caffeine.cache.MpscChunkedArrayQueueColdProducerFields<E>
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- com.github.benmanes.caffeine.cache.MpscChunkedArrayQueue<E>
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- com.github.benmanes.caffeine.cache.MpscGrowableArrayQueue<E>
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- All Implemented Interfaces:
java.lang.Iterable<E>
,java.util.Collection<E>
,java.util.Queue<E>
final class MpscGrowableArrayQueue<E> extends MpscChunkedArrayQueue<E>
An MPSC array queue which starts at initialCapacity and grows to maxCapacity in linked chunks of the initial size. The queue grows only when the current buffer is full and elements are not copied on resize, instead a link to the new buffer is stored in the old buffer for the consumer to follow.
This is a shaded copy of MpscGrowableArrayQueue provided by JCTools from version 2.0.
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Field Summary
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Fields inherited from class com.github.benmanes.caffeine.cache.MpscChunkedArrayQueue
p0, p1, p10, p11, p12, p13, p14, p15, p16, p17, p2, p3, p4, p5, p6, p7
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Fields inherited from class com.github.benmanes.caffeine.cache.MpscChunkedArrayQueueColdProducerFields
maxQueueCapacity
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Fields inherited from class com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueueColdProducerFields
producerBuffer, producerLimit, producerMask
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Fields inherited from class com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueueConsumerFields
consumerBuffer, consumerIndex, consumerMask
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Fields inherited from class com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueuePad2
p01, p02, p03, p04, p05, p06, p07
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Fields inherited from class com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueueProducerFields
producerIndex
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Constructor Summary
Constructors Constructor Description MpscGrowableArrayQueue(int initialCapacity, int maxCapacity)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected long
getCurrentBufferCapacity(long mask)
protected int
getNextBufferSize(E[] buffer)
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Methods inherited from class com.github.benmanes.caffeine.cache.MpscChunkedArrayQueue
availableInQueue, capacity
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Methods inherited from class com.github.benmanes.caffeine.cache.BaseMpscLinkedArrayQueue
allocate, currentConsumerIndex, currentProducerIndex, isEmpty, iterator, offer, peek, poll, relaxedOffer, relaxedPeek, relaxedPoll, size, toString
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Methods inherited from class java.util.AbstractCollection
contains, containsAll, remove, removeAll, retainAll, toArray, toArray
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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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Constructor Detail
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MpscGrowableArrayQueue
public MpscGrowableArrayQueue(int initialCapacity, int maxCapacity)
- Parameters:
initialCapacity
- the queue initial capacity. If chunk size is fixed this will be the chunk size. Must be 2 or more.maxCapacity
- the maximum capacity will be rounded up to the closest power of 2 and will be the upper limit of number of elements in this queue. Must be 4 or more and round up to a larger power of 2 than initialCapacity.
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Method Detail
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getNextBufferSize
protected int getNextBufferSize(E[] buffer)
- Overrides:
getNextBufferSize
in classMpscChunkedArrayQueue<E>
- Returns:
- next buffer size(inclusive of next array pointer)
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getCurrentBufferCapacity
protected long getCurrentBufferCapacity(long mask)
- Overrides:
getCurrentBufferCapacity
in classMpscChunkedArrayQueue<E>
- Returns:
- current buffer capacity for elements (excluding next pointer and jump entry) * 2
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