com.facebook.presto.common.array

Class ReferenceCountMap

java.lang.Object

com.facebook.presto.common.array.Long2IntOpenHashMap

com.facebook.presto.common.array.ReferenceCountMap

All Implemented Interfaces:

Serializable, Cloneable

public final class ReferenceCountMap
extends Long2IntOpenHashMap

See Also:

Serialized Form

Field Summary

Fields inherited from class com.facebook.presto.common.array.Long2IntOpenHashMap

containsNullKey, defRetValue, FILL_FACTOR, INITIAL_ELEMENT_COUNT, key, mask, maxFill, minN, n, size, value

Constructor Summary

Constructors

Constructor and Description
ReferenceCountMap()

Method Summary

Modifier and Type	Method and Description
int	decrementAndGet(Object key) Decrements the reference count of an object by 1 and returns the updated reference count
int	incrementAndGet(Object key) Increments the reference count of an object by 1 and returns the updated reference count
long	sizeOf() Returns the size of this map in bytes.

Methods inherited from class com.facebook.presto.common.array.Long2IntOpenHashMap

addTo, get, getDefaultReturnValue, mix, rehash, remove, setDefaultReturnValue, shiftKeys, size

Methods inherited from class java.lang.Object

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

Constructor Detail

ReferenceCountMap

public ReferenceCountMap()

Method Detail

incrementAndGet

public int incrementAndGet(Object key)

Increments the reference count of an object by 1 and returns the updated reference count

decrementAndGet

public int decrementAndGet(Object key)

Decrements the reference count of an object by 1 and returns the updated reference count

sizeOf

public long sizeOf()

Returns the size of this map in bytes.