EDU.oswego.cs.dl.util.concurrent

Class ConcurrentHashMap.Segment

java.lang.Object

EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap.Segment

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

ConcurrentHashMap

protected static final class ConcurrentHashMap.Segment
extends java.lang.Object
implements java.io.Serializable

Bookkeeping for each concurrency control segment. Each segment contains a local count of the number of elements in its region. However, the main use of a Segment is for its lock.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	count The number of elements in this segment's region.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Segment()

Method Summary

Modifier and Type	Method and Description
protected int	getCount() Get the count under synch.
protected void	synch() Force a synchronization

Methods inherited from class java.lang.Object

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

Field Detail

count

protected int count

The number of elements in this segment's region. It is always updated within synchronized blocks.

Constructor Detail

Segment

protected Segment()

Method Detail

getCount

protected int getCount()

Get the count under synch.

synch

protected void synch()

Force a synchronization