org.apache.hadoop.hbase.io.hfile.bucket

Class UnsafeSharedMemoryBucketEntry

java.lang.Object

org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.BucketEntry

org.apache.hadoop.hbase.io.hfile.bucket.UnsafeSharedMemoryBucketEntry

All Implemented Interfaces:

Serializable

@InterfaceAudience.Private
public class UnsafeSharedMemoryBucketEntry
extends BucketCache.BucketEntry

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	markedForEvict
private int	refCount
private static long	refCountOffset
private static long	serialVersionUID
private static sun.misc.Unsafe	unsafe

Fields inherited from class org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.BucketEntry

COMPARATOR, deserialiserIndex

Constructor Summary

Constructors

Constructor and Description
UnsafeSharedMemoryBucketEntry(long offset, int length, long accessCounter, boolean inMemory)

Method Summary

Modifier and Type	Method and Description
protected int	decrementRefCountAndGet()
protected int	getRefCount()
protected int	incrementRefCountAndGet()
protected boolean	isMarkedForEvict()
protected void	markForEvict()

Methods inherited from class org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.BucketEntry

access, deserializerReference, getCachedTime, getLength, getPriority, offset, setDeserialiserReference

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

unsafe

private static final sun.misc.Unsafe unsafe

refCountOffset

private static final long refCountOffset

markedForEvict

private volatile boolean markedForEvict

refCount

private volatile int refCount

Constructor Detail

UnsafeSharedMemoryBucketEntry

public UnsafeSharedMemoryBucketEntry(long offset,
                                     int length,
                                     long accessCounter,
                                     boolean inMemory)

Method Detail

getRefCount

protected int getRefCount()

Overrides:

getRefCount in class BucketCache.BucketEntry

incrementRefCountAndGet

protected int incrementRefCountAndGet()

Overrides:

incrementRefCountAndGet in class BucketCache.BucketEntry

decrementRefCountAndGet

protected int decrementRefCountAndGet()

Overrides:

decrementRefCountAndGet in class BucketCache.BucketEntry

isMarkedForEvict

protected boolean isMarkedForEvict()

Overrides:

isMarkedForEvict in class BucketCache.BucketEntry

markForEvict

protected void markForEvict()

Overrides:

markForEvict in class BucketCache.BucketEntry