Class PDW<K,V>

java.lang.Object

com.github.benmanes.caffeine.cache.Node<K,V>

com.github.benmanes.caffeine.cache.PD<K,V>

com.github.benmanes.caffeine.cache.PDW<K,V>

All Implemented Interfaces:

AccessOrderDeque.AccessOrder<Node<K,V>>, NodeFactory<K,V>, WriteOrderDeque.WriteOrder<Node<K,V>>

Direct Known Subclasses:

PDWMS, PDWMW, PDWR

class PDW<K,V>
extends PD<K,V>

WARNING: GENERATED CODE A cache entry that provides the following features:

• ExpireWrite
• StrongKeys (inherited)
• SoftValues (inherited)

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Node<K,V>	nextInWriteOrder
(package private) Node<K,V>	previousInWriteOrder
protected static final long	WRITE_TIME_OFFSET
(package private) long	writeTime

Fields inherited from class PD

value, VALUE_OFFSET

Fields inherited from class Node

PROBATION, PROTECTED, WINDOW

Fields inherited from interface NodeFactory

DEAD_STRONG_KEY, DEAD_WEAK_KEY, RETIRED_STRONG_KEY, RETIRED_WEAK_KEY

Constructor Summary

Constructors

Constructor	Description
PDW()
PDW(Object keyReference, V value, ReferenceQueue<V> valueReferenceQueue, int weight, long now)
PDW(K key, ReferenceQueue<K> keyReferenceQueue, V value, ReferenceQueue<V> valueReferenceQueue, int weight, long now)

Method Summary

Modifier and Type	Method	Description
boolean	casVariableTime(long expect, long update)	Atomically sets the variable time to the given updated value if the current value equals the expected value and returns if the update was successful.
Node<K,V>	getNextInVariableOrder()
final Node<K,V>	getNextInWriteOrder()	Retrieves the next element or null if either the element is unlinked or the last element on the deque.
Node<K,V>	getPreviousInVariableOrder()
final Node<K,V>	getPreviousInWriteOrder()	Retrieves the previous element or null if either the element is unlinked or the first element on the deque.
long	getVariableTime()	Returns the variable expiration time, in nanoseconds.
final long	getWriteTime()	Returns the time that this entry was last written, in ns.
Node<K,V>	newNode(Object keyReference, V value, ReferenceQueue<V> valueReferenceQueue, int weight, long now)	Returns a node optimized for the specified features.
Node<K,V>	newNode(K key, ReferenceQueue<K> keyReferenceQueue, V value, ReferenceQueue<V> valueReferenceQueue, int weight, long now)	Returns a node optimized for the specified features.
void	setNextInVariableOrder(Node<K,V> nextInWriteOrder)
final void	setNextInWriteOrder(Node<K,V> nextInWriteOrder)	Sets the next element or null if there is no link.
void	setPreviousInVariableOrder(Node<K,V> previousInWriteOrder)
final void	setPreviousInWriteOrder(Node<K,V> previousInWriteOrder)	Sets the previous element or null if there is no link.
void	setVariableTime(long writeTime)	Sets the variable expiration time in nanoseconds.
final void	setWriteTime(long writeTime)	Sets the write time in nanoseconds.

Methods inherited from class PD

containsValue, die, getKey, getKeyReference, getValue, getValueReference, isAlive, isDead, isRetired, retire, setValue, softValues

Methods inherited from class Node

casWriteTime, getAccessTime, getNextInAccessOrder, getPolicyWeight, getPreviousInAccessOrder, getQueueType, getWeight, inMainProbation, inMainProtected, inWindow, makeMainProbation, makeMainProtected, makeWindow, setAccessTime, setNextInAccessOrder, setPolicyWeight, setPreviousInAccessOrder, setQueueType, setWeight, toString

Methods inherited from class Object

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

Methods inherited from interface NodeFactory

newLookupKey, newReferenceKey, weakValues

Field Details

WRITE_TIME_OFFSET

protected static final long WRITE_TIME_OFFSET

writeTime

volatile long writeTime

previousInWriteOrder

Node<K,V> previousInWriteOrder

nextInWriteOrder

Node<K,V> nextInWriteOrder

Constructor Details

PDW

PDW()

PDW

PDW(K key,
 ReferenceQueue<K> keyReferenceQueue,
 V value,
 ReferenceQueue<V> valueReferenceQueue,
 int weight,
 long now)

PDW

PDW(Object keyReference,
 V value,
 ReferenceQueue<V> valueReferenceQueue,
 int weight,
 long now)

Method Details

getPreviousInVariableOrder

public Node<K,V> getPreviousInVariableOrder()

Overrides:

getPreviousInVariableOrder in class Node<K,V>

setPreviousInVariableOrder

public void setPreviousInVariableOrder(Node<K,V> previousInWriteOrder)

Overrides:

setPreviousInVariableOrder in class Node<K,V>

getNextInVariableOrder

public Node<K,V> getNextInVariableOrder()

Overrides:

getNextInVariableOrder in class Node<K,V>

setNextInVariableOrder

public void setNextInVariableOrder(Node<K,V> nextInWriteOrder)

Overrides:

setNextInVariableOrder in class Node<K,V>

getVariableTime

public long getVariableTime()

Description copied from class: Node

Returns the variable expiration time, in nanoseconds.

Overrides:

getVariableTime in class Node<K,V>

setVariableTime

public void setVariableTime(long writeTime)

Description copied from class: Node

Sets the variable expiration time in nanoseconds. This update may be set lazily and rely on the memory fence when the lock is released.

Overrides:

setVariableTime in class Node<K,V>

casVariableTime

public boolean casVariableTime(long expect,
 long update)

Description copied from class: Node

Atomically sets the variable time to the given updated value if the current value equals the expected value and returns if the update was successful.

Overrides:

casVariableTime in class Node<K,V>

getWriteTime

public final long getWriteTime()

Description copied from class: Node

Returns the time that this entry was last written, in ns.

Overrides:

getWriteTime in class Node<K,V>

setWriteTime

public final void setWriteTime(long writeTime)

Description copied from class: Node

Sets the write time in nanoseconds. This update may be set lazily and rely on the memory fence when the lock is released.

Overrides:

setWriteTime in class Node<K,V>

getPreviousInWriteOrder

public final Node<K,V> getPreviousInWriteOrder()

Description copied from interface: WriteOrderDeque.WriteOrder

Retrieves the previous element or null if either the element is unlinked or the first element on the deque.

Specified by:

getPreviousInWriteOrder in interface WriteOrderDeque.WriteOrder<K>

Overrides:

getPreviousInWriteOrder in class Node<K,V>

setPreviousInWriteOrder

public final void setPreviousInWriteOrder(Node<K,V> previousInWriteOrder)

Description copied from interface: WriteOrderDeque.WriteOrder

Sets the previous element or null if there is no link.

Specified by:

setPreviousInWriteOrder in interface WriteOrderDeque.WriteOrder<K>

Overrides:

setPreviousInWriteOrder in class Node<K,V>

getNextInWriteOrder

public final Node<K,V> getNextInWriteOrder()

Description copied from interface: WriteOrderDeque.WriteOrder

Retrieves the next element or null if either the element is unlinked or the last element on the deque.

Specified by:

getNextInWriteOrder in interface WriteOrderDeque.WriteOrder<K>

Overrides:

getNextInWriteOrder in class Node<K,V>

setNextInWriteOrder

public final void setNextInWriteOrder(Node<K,V> nextInWriteOrder)

Description copied from interface: WriteOrderDeque.WriteOrder

Sets the next element or null if there is no link.

Specified by:

setNextInWriteOrder in interface WriteOrderDeque.WriteOrder<K>

Overrides:

setNextInWriteOrder in class Node<K,V>

newNode

public Node<K,V> newNode(K key,
 ReferenceQueue<K> keyReferenceQueue,
 V value,
 ReferenceQueue<V> valueReferenceQueue,
 int weight,
 long now)

Description copied from interface: NodeFactory

Returns a node optimized for the specified features.

Specified by:

newNode in interface NodeFactory<K,V>

Overrides:

newNode in class PD<K,V>

newNode

public Node<K,V> newNode(Object keyReference,
 V value,
 ReferenceQueue<V> valueReferenceQueue,
 int weight,
 long now)

Description copied from interface: NodeFactory

Returns a node optimized for the specified features.

Specified by:

newNode in interface NodeFactory<K,V>

Overrides:

newNode in class PD<K,V>