Package org.jboss.netty.util.internal
Class ConcurrentIdentityWeakKeyHashMap.HashEntry<K,V>
- java.lang.Object
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- org.jboss.netty.util.internal.ConcurrentIdentityWeakKeyHashMap.HashEntry<K,V>
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- Enclosing class:
- ConcurrentIdentityWeakKeyHashMap<K,V>
static final class ConcurrentIdentityWeakKeyHashMap.HashEntry<K,V> extends java.lang.Object
ConcurrentReferenceHashMap list entry. Note that this is never exported out as a user-visible Map.Entry. Because the value field is volatile, not final, it is legal wrt the Java Memory Model for an unsynchronized reader to see null instead of initial value when read via a data race. Although a reordering leading to this is not likely to ever actually occur, the Segment.readValueUnderLock method is used as a backup in case a null (pre-initialized) value is ever seen in an unsynchronized access method.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description (package private) V
dereferenceValue(java.lang.Object value)
(package private) K
key()
(package private) static <K,V>
ConcurrentIdentityWeakKeyHashMap.HashEntry<K,V>[]newArray(int i)
(package private) void
setValue(V value)
(package private) V
value()
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Field Detail
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keyRef
final java.lang.Object keyRef
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hash
final int hash
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valueRef
volatile java.lang.Object valueRef
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next
final ConcurrentIdentityWeakKeyHashMap.HashEntry<K,V> next
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Constructor Detail
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HashEntry
HashEntry(K key, int hash, ConcurrentIdentityWeakKeyHashMap.HashEntry<K,V> next, V value, java.lang.ref.ReferenceQueue<java.lang.Object> refQueue)
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Method Detail
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key
K key()
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value
V value()
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dereferenceValue
V dereferenceValue(java.lang.Object value)
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setValue
void setValue(V value)
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newArray
static <K,V> ConcurrentIdentityWeakKeyHashMap.HashEntry<K,V>[] newArray(int i)
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