Package org.terracotta.offheapstore

Interface Segment<K,V>

All Superinterfaces:

ConcurrentMap<K,V>, HashingMap<K,V>, Map<K,V>, MapInternals, ReadWriteLock

All Known Subinterfaces:

PinnableSegment<K,V>

All Known Implementing Classes:

AbstractLockedOffHeapHashMap, AbstractOffHeapClockCache, AbstractPersistentLockedOffHeapHashMap, AbstractPersistentOffHeapCache, EvictionListeningReadWriteLockedOffHeapClockCache, EvictionListeningWriteLockedOffHeapClockCache, PersistentReadWriteLockedOffHeapClockCache, PersistentReadWriteLockedOffHeapHashMap, ReadWriteLockedOffHeapClockCache, ReadWriteLockedOffHeapHashMap, WriteLockedOffHeapClockCache, WriteLockedOffHeapHashMap

public interface Segment<K,V>
extends ConcurrentMap<K,V>, MapInternals, ReadWriteLock, HashingMap<K,V>

Implemented by maps that can be used as segments in a concurrent map.

See Also:

• AbstractConcurrentOffHeapMap

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Method Summary

Modifier and Type	Method	Description
MetadataTuple<V>	computeIfAbsentWithMetadata(K key, Function<? super K,? extends MetadataTuple<V>> mappingFunction)
MetadataTuple<V>	computeIfPresentWithMetadata(K key, BiFunction<? super K,? super MetadataTuple<V>,? extends MetadataTuple<V>> remappingFunction)
MetadataTuple<V>	computeWithMetadata(K key, BiFunction<? super K,? super MetadataTuple<V>,? extends MetadataTuple<V>> remappingFunction)
void	destroy()
V	fill(K key, V value)	See OffHeapHashMap.fill(Object, Object) for a detailed description.
V	fill(K key, V value, int metadata)
Integer	getAndSetMetadata(K key, int mask, int values)
ReentrantReadWriteLock	getLock()	Return the ReentrantReadWriteLock used by this segment.
Integer	getMetadata(K key, int mask)
V	getValueAndSetMetadata(K key, int mask, int values)
V	put(K key, V value, int metadata)
boolean	removeNoReturn(Object key)
boolean	shrink()

Methods inherited from interface java.util.concurrent.ConcurrentMap

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Methods inherited from interface org.terracotta.offheapstore.HashingMap

removeAllWithHash

Methods inherited from interface java.util.Map

clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values

Methods inherited from interface org.terracotta.offheapstore.MapInternals

getAllocatedMemory, getDataAllocatedMemory, getDataOccupiedMemory, getDataSize, getDataVitalMemory, getOccupiedMemory, getRemovedSlotCount, getReprobeLength, getSize, getTableCapacity, getUsedSlotCount, getVitalMemory

Methods inherited from interface java.util.concurrent.locks.ReadWriteLock

readLock, writeLock

Method Details

fill

V fill(K key,
 V value)

See OffHeapHashMap.fill(Object, Object) for a detailed description.

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

the previous value associated with key, or null if there was no mapping for key (irrespective of whether the value was successfully installed).

fill

V fill(K key,
 V value,
 int metadata)

put

V put(K key,
 V value,
 int metadata)

getMetadata

Integer getMetadata(K key,
 int mask)

getAndSetMetadata

Integer getAndSetMetadata(K key,
 int mask,
 int values)

getValueAndSetMetadata

V getValueAndSetMetadata(K key,
 int mask,
 int values)

getLock

ReentrantReadWriteLock getLock()
                        throws UnsupportedOperationException

Return the ReentrantReadWriteLock used by this segment.

Returns:

RRWL for this segment

Throws:

UnsupportedOperationException - if this segment does not use a RRWL

removeNoReturn

boolean removeNoReturn(Object key)

destroy

void destroy()

shrink

boolean shrink()

computeWithMetadata

MetadataTuple<V> computeWithMetadata(K key,
 BiFunction<? super K,? super MetadataTuple<V>,? extends MetadataTuple<V>> remappingFunction)

computeIfAbsentWithMetadata

MetadataTuple<V> computeIfAbsentWithMetadata(K key,
 Function<? super K,? extends MetadataTuple<V>> mappingFunction)

computeIfPresentWithMetadata

MetadataTuple<V> computeIfPresentWithMetadata(K key,
 BiFunction<? super K,? super MetadataTuple<V>,? extends MetadataTuple<V>> remappingFunction)