程序包 cn.taketoday.util

类 ConcurrentReferenceHashMap.ReferenceManager

java.lang.Object

cn.taketoday.util.ConcurrentReferenceHashMap.ReferenceManager

封闭类:

ConcurrentReferenceHashMap<K,V>

protected class ConcurrentReferenceHashMap.ReferenceManager
extends Object

Strategy class used to manage References. This class can be overridden if alternative reference types need to be supported.

字段概要

字段

修饰符和类型	字段	说明
private final ReferenceQueue<ConcurrentReferenceHashMap.Entry<K,V>>	queue

构造器概要

构造器

限定符	构造器	说明
protected	ReferenceManager()

方法概要

修饰符和类型	方法	说明
ConcurrentReferenceHashMap.Reference<K,V>	createReference(ConcurrentReferenceHashMap.Entry<K,V> entry, int hash, ConcurrentReferenceHashMap.Reference<K,V> next)	Factory method used to create a new ConcurrentReferenceHashMap.Reference.
ConcurrentReferenceHashMap.Reference<K,V>	pollForPurge()	Return any reference that has been garbage collected and can be purged from the underlying structure or null if no references need purging.

从类继承的方法 java.lang.Object

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

字段详细资料

queue

private final ReferenceQueue<ConcurrentReferenceHashMap.Entry<K,V>> queue

构造器详细资料

ReferenceManager

protected ReferenceManager()

方法详细资料

createReference

public ConcurrentReferenceHashMap.Reference<K,V> createReference(ConcurrentReferenceHashMap.Entry<K,V> entry,
 int hash,
 @Nullable
 ConcurrentReferenceHashMap.Reference<K,V> next)

Factory method used to create a new ConcurrentReferenceHashMap.Reference.

参数:

entry - the entry contained in the reference

hash - the hash

next - the next reference in the chain, or null if none

返回:

a new ConcurrentReferenceHashMap.Reference

pollForPurge

@Nullable
public ConcurrentReferenceHashMap.Reference<K,V> pollForPurge()

Return any reference that has been garbage collected and can be purged from the underlying structure or null if no references need purging. This method must be thread safe and ideally should not block when returning null. References should be returned once and only once.

返回:

a reference to purge or null