org.terracotta.offheapstore
Class ReadWriteLockedOffHeapHashMap<K,V>

java.lang.Object
  java.util.AbstractMap<K,V>
      org.terracotta.offheapstore.OffHeapHashMap<K,V>
          org.terracotta.offheapstore.AbstractLockedOffHeapHashMap<K,V>
              org.terracotta.offheapstore.ReadWriteLockedOffHeapHashMap<K,V>

Type Parameters:

K - the type of keys maintained by this map

V - the type of mapped values

All Implemented Interfaces:

ConcurrentMap<K,V>, ReadWriteLock, Map<K,V>, HashingMap<K,V>, MapInternals, Segment<K,V>, StorageEngine.Owner

public class ReadWriteLockedOffHeapHashMap<K,V>
extends AbstractLockedOffHeapHashMap<K,V>

A concurrent-read, exclusive-write off-heap hash-map.

This map uses a regular ReentrantReadWriteLock to provide read/write exclusion/sharing properties.

Author:

Chris Dennis

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

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

Map.Entry<K,V>

Field Summary

Fields inherited from class org.terracotta.offheapstore.OffHeapHashMap

ENCODING, ENTRY_BIT_SHIFT, ENTRY_SIZE, hashtable, hashTablePage, KEY_HASHCODE, modCount, removedSlots, reprobeLimit, RESERVED_STATUS_BITS, size, STATUS, STATUS_REMOVED, STATUS_USED, storageEngine, tableSource

Constructor Summary

ReadWriteLockedOffHeapHashMap(PageSource tableSource, boolean tableAllocationsSteal, StorageEngine<? super K,? super V> storageEngine)

ReadWriteLockedOffHeapHashMap(PageSource tableSource, boolean tableAllocationsSteal, StorageEngine<? super K,? super V> storageEngine, int tableSize)

ReadWriteLockedOffHeapHashMap(PageSource tableSource, StorageEngine<? super K,? super V> storageEngine)

ReadWriteLockedOffHeapHashMap(PageSource tableSource, StorageEngine<? super K,? super V> storageEngine, int tableSize)

Method Summary

ReentrantReadWriteLock	getLock() Return the ReentrantReadWriteLock used by this segment.
Lock	readLock()
Lock	writeLock()

Methods inherited from class org.terracotta.offheapstore.AbstractLockedOffHeapHashMap

clear, computeIfAbsentWithMetadata, computeIfPresentWithMetadata, computeWithMetadata, containsKey, destroy, entrySet, evict, fill, fill, get, getAndSetMetadata, getEncodingForHashAndBinary, getMetadata, getValueAndSetMetadata, installMappingForHashAndEncoding, keySet, put, put, putIfAbsent, remove, remove, removeAllWithHash, removeMapping, removeNoReturn, replace, replace, shrink, size, values

Methods inherited from class org.terracotta.offheapstore.OffHeapHashMap

added, encodingSet, fill, freePendingTables, getAllocatedMemory, getAtTableOffset, getDataAllocatedMemory, getDataOccupiedMemory, getDataSize, getDataVitalMemory, getEntryAtTableOffset, getOccupiedMemory, getRemovedSlotCount, getReprobeLength, getSize, getSlotForHashAndEncoding, getStorageEngine, getTableCapacity, getUsedSlotCount, getVitalMemory, hit, indexFor, indexFor, isAvailable, isPresent, isRemoved, isRemoved, isTerminating, isTerminating, isThiefForTableAllocations, readLong, readLong, removeAtTableOffset, removed, shrinkTable, spread, storageEngineFailure, tableExpansionFailure, tryIncreaseReprobe, updated, updateEncoding

Methods inherited from class java.util.AbstractMap

clone, containsValue, equals, hashCode, isEmpty, putAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

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.Map

containsValue, equals, hashCode, isEmpty, putAll

Constructor Detail

ReadWriteLockedOffHeapHashMap

public ReadWriteLockedOffHeapHashMap(PageSource tableSource,
                                     StorageEngine<? super K,? super V> storageEngine)

ReadWriteLockedOffHeapHashMap

public ReadWriteLockedOffHeapHashMap(PageSource tableSource,
                                     boolean tableAllocationsSteal,
                                     StorageEngine<? super K,? super V> storageEngine)

ReadWriteLockedOffHeapHashMap

public ReadWriteLockedOffHeapHashMap(PageSource tableSource,
                                     StorageEngine<? super K,? super V> storageEngine,
                                     int tableSize)

ReadWriteLockedOffHeapHashMap

public ReadWriteLockedOffHeapHashMap(PageSource tableSource,
                                     boolean tableAllocationsSteal,
                                     StorageEngine<? super K,? super V> storageEngine,
                                     int tableSize)

Method Detail

readLock

public Lock readLock()

Specified by:

readLock in interface ReadWriteLock

Specified by:

readLock in class AbstractLockedOffHeapHashMap<K,V>

writeLock

public Lock writeLock()

Specified by:

writeLock in interface ReadWriteLock

Specified by:

writeLock in class AbstractLockedOffHeapHashMap<K,V>

getLock

public ReentrantReadWriteLock getLock()

Description copied from interface: Segment

Return the ReentrantReadWriteLock used by this segment.

Returns:

RRWL for this segment