Package org.terracotta.offheapstore

Class WriteLockedOffHeapHashMap<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.WriteLockedOffHeapHashMap<K,V>

Type Parameters:

K - the type of keys maintained by this map

V - the type of mapped values

All Implemented Interfaces:

java.util.concurrent.ConcurrentMap<K,V>, java.util.concurrent.locks.ReadWriteLock, java.util.Map<K,V>, HashingMap<K,V>, MapInternals, Segment<K,V>, StorageEngine.Owner

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

An exclusive-read/write off-heap hash-map.

This map uses a regular ReentrantLock to provide exclusive read and write operations.

Nested Class Summary

Nested classes/interfaces inherited from class org.terracotta.offheapstore.AbstractLockedOffHeapHashMap

AbstractLockedOffHeapHashMap.LockedEntryIterator, AbstractLockedOffHeapHashMap.LockedEntrySet, AbstractLockedOffHeapHashMap.LockedKeyIterator, AbstractLockedOffHeapHashMap.LockedKeySet

Nested classes/interfaces inherited from class org.terracotta.offheapstore.OffHeapHashMap

OffHeapHashMap.DirectEntry, OffHeapHashMap.EncodingIterator, OffHeapHashMap.EncodingSet, OffHeapHashMap.EntryIterator, OffHeapHashMap.EntrySet, OffHeapHashMap.HashIterator<T>, OffHeapHashMap.KeyIterator, OffHeapHashMap.KeySet, OffHeapHashMap.PendingPage

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

java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,V extends java.lang.Object>

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

java.util.Map.Entry<K extends java.lang.Object,V extends java.lang.Object>

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.concurrent.locks.Lock	lock

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

Constructors

Constructor	Description
WriteLockedOffHeapHashMap(PageSource tableSource, StorageEngine<? super K,? super V> storageEngine)
WriteLockedOffHeapHashMap(PageSource tableSource, StorageEngine<? super K,? super V> storageEngine, int tableSize)

Method Summary

Modifier and Type	Method	Description
java.util.concurrent.locks.ReentrantReadWriteLock	getLock()	Return the ReentrantReadWriteLock used by this segment.
java.util.concurrent.locks.Lock	readLock()
java.util.concurrent.locks.Lock	writeLock()

Methods inherited from class org.terracotta.offheapstore.AbstractLockedOffHeapHashMap

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

Methods inherited from class org.terracotta.offheapstore.OffHeapHashMap

added, createEncodingSet, encodingSet, entrySet, 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, keySet, 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, values

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.ConcurrentMap

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, replaceAll

Methods inherited from interface java.util.Map

containsValue, entrySet, equals, hashCode, isEmpty, keySet, putAll, values

Methods inherited from interface org.terracotta.offheapstore.MapInternals

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

Field Detail

lock

private final java.util.concurrent.locks.Lock lock

Constructor Detail

WriteLockedOffHeapHashMap

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

WriteLockedOffHeapHashMap

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

Method Detail

readLock

public java.util.concurrent.locks.Lock readLock()

Specified by:

readLock in interface java.util.concurrent.locks.ReadWriteLock

Specified by:

readLock in class AbstractLockedOffHeapHashMap<K,V>

writeLock

public java.util.concurrent.locks.Lock writeLock()

Specified by:

writeLock in interface java.util.concurrent.locks.ReadWriteLock

Specified by:

writeLock in class AbstractLockedOffHeapHashMap<K,V>

getLock

public java.util.concurrent.locks.ReentrantReadWriteLock getLock()

Description copied from interface: Segment

Return the ReentrantReadWriteLock used by this segment.

Returns:

RRWL for this segment