E
- type of the element stored in the Queue
public class MpscSequencedArrayQueue<E> extends MpscSequencedArrayQueueConsumerField<E>
MpmcArrayQueue
but with the
appropriate weakening of constraints on offer. The trade off does not seem worth while compared to the simpler
MpscArrayQueue
.MessagePassingQueue.Consumer<T>, MessagePassingQueue.ExitCondition, MessagePassingQueue.Supplier<T>, MessagePassingQueue.WaitStrategy
Modifier and Type | Field and Description |
---|---|
(package private) long |
p30 |
(package private) long |
p31 |
(package private) long |
p32 |
(package private) long |
p33 |
(package private) long |
p34 |
(package private) long |
p35 |
(package private) long |
p36 |
(package private) long |
p37 |
(package private) long |
p40 |
(package private) long |
p41 |
(package private) long |
p42 |
(package private) long |
p43 |
(package private) long |
p44 |
(package private) long |
p45 |
(package private) long |
p46 |
consumerIndex
p20, p21, p22, p23, p24, p25, p26
p10, p11, p12, p13, p14, p15, p16
SEQ_BUFFER_PAD, sequenceBuffer
buffer, mask
p01, p02, p03, p04, p05, p06, p07, p17
UNBOUNDED_CAPACITY
Constructor and Description |
---|
MpscSequencedArrayQueue(int capacity) |
Modifier and Type | Method and Description |
---|---|
int |
drain(MessagePassingQueue.Consumer<E> c)
Remove all available item from the queue and hand to consume.
|
int |
drain(MessagePassingQueue.Consumer<E> c,
int limit)
Remove up to limit elements from the queue and hand to consume.
|
void |
drain(MessagePassingQueue.Consumer<E> c,
MessagePassingQueue.WaitStrategy wait,
MessagePassingQueue.ExitCondition exit)
Remove elements from the queue and hand to consume forever.
|
int |
fill(MessagePassingQueue.Supplier<E> s)
Stuff the queue with elements from the supplier.
|
int |
fill(MessagePassingQueue.Supplier<E> s,
int limit)
Stuff the queue with up to limit elements from the supplier.
|
void |
fill(MessagePassingQueue.Supplier<E> s,
MessagePassingQueue.WaitStrategy wait,
MessagePassingQueue.ExitCondition exit)
Stuff the queue with elements from the supplier forever.
|
boolean |
offer(E e)
Called from a producer thread subject to the restrictions appropriate to the implementation and
according to the
Queue.offer(Object) interface. |
E |
peek()
Called from the consumer thread subject to the restrictions appropriate to the implementation and
according to the
Queue.peek() interface. |
E |
poll()
Called from the consumer thread subject to the restrictions appropriate to the implementation and
according to the
Queue.poll() interface. |
boolean |
relaxedOffer(E message)
Called from a producer thread subject to the restrictions appropriate to the implementation.
|
E |
relaxedPeek()
Called from the consumer thread subject to the restrictions appropriate to the implementation.
|
E |
relaxedPoll()
Called from the consumer thread subject to the restrictions appropriate to the implementation.
|
lpConsumerIndex, lvConsumerIndex, soConsumerIndex
casProducerIndex, lvProducerIndex
calcSequenceOffset, calcSequenceOffset, lvSequence, soSequence
calcElementOffset, calcElementOffset, capacity, clear, currentConsumerIndex, currentProducerIndex, isEmpty, iterator, size, toString
contains, containsAll, remove, removeAll, retainAll, toArray, toArray
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
long p40
long p41
long p42
long p43
long p44
long p45
long p46
long p30
long p31
long p32
long p33
long p34
long p35
long p36
long p37
public boolean offer(E e)
MessagePassingQueue
Queue.offer(Object)
interface.e
- not null, will throw NPE if it ispublic E poll()
MessagePassingQueue
Queue.poll()
interface.public E peek()
MessagePassingQueue
Queue.peek()
interface.public boolean relaxedOffer(E message)
MessagePassingQueue
Queue.offer(Object)
this method may return false without the queue being full.message
- not null, will throw NPE if it ispublic E relaxedPoll()
MessagePassingQueue
Queue.poll()
this method may return null without the queue being empty.public E relaxedPeek()
MessagePassingQueue
Queue.peek()
this method may return null without the queue being empty.public int drain(MessagePassingQueue.Consumer<E> c)
MessagePassingQueue
M m;
while((m = relaxedPoll()) != null){
c.accept(m);
}
There's no strong commitment to the queue being empty at the end of a drain. Called from a
consumer thread subject to the restrictions appropriate to the implementation.public int fill(MessagePassingQueue.Supplier<E> s)
MessagePassingQueue
while(relaxedOffer(s.get());
There's no strong commitment to the queue being full at the end of a fill. Called from a
producer thread subject to the restrictions appropriate to the implementation.public int drain(MessagePassingQueue.Consumer<E> c, int limit)
MessagePassingQueue
M m;
int i = 0;
for(;i < limit && (m = relaxedPoll()) != null; i++){
c.accept(m);
}
return i;
There's no strong commitment to the queue being empty at the end of a drain. Called from a consumer thread subject to the restrictions appropriate to the implementation.
public int fill(MessagePassingQueue.Supplier<E> s, int limit)
MessagePassingQueue
for(int i=0; i < limit && relaxedOffer(s.get()); i++);
There's no strong commitment to the queue being full at the end of a fill. Called from a producer thread subject to the restrictions appropriate to the implementation.
public void drain(MessagePassingQueue.Consumer<E> c, MessagePassingQueue.WaitStrategy wait, MessagePassingQueue.ExitCondition exit)
MessagePassingQueue
int idleCounter = 0;
while (exit.keepRunning()) {
E e = relaxedPoll();
if(e==null){
idleCounter = wait.idle(idleCounter);
continue;
}
idleCounter = 0;
c.accept(e);
}
Called from a consumer thread subject to the restrictions appropriate to the implementation.
public void fill(MessagePassingQueue.Supplier<E> s, MessagePassingQueue.WaitStrategy wait, MessagePassingQueue.ExitCondition exit)
MessagePassingQueue
int idleCounter = 0;
while (exit.keepRunning()) {
E e = s.get();
while (!relaxedOffer(e)) {
idleCounter = wait.idle(idleCounter);
continue;
}
idleCounter = 0;
}
Called from a producer thread subject to the restrictions appropriate to the implementation.