org.sourceforge.jemm.util
Class ManagedItemStore<K,V extends ManagedItem<K>>

java.lang.Object
  org.sourceforge.jemm.util.ManagedItemStore<K,V>

public abstract class ManagedItemStore<K,V extends ManagedItem<K>>
extends java.lang.Object

Field Summary

static int	DEFAULT_CACHED_ELEMENTS_PER_SEGMENT The default number of cached elements to hold per segment
static int	DEFAULT_SEGMENTS The default number of lock segments to use

Constructor Summary

protected	ManagedItemStore() Create a ManagedItemStore with the default number of segments and cached elements
protected	ManagedItemStore(int noSegments, int noCachedElementsPerSegment)

Method Summary

V	acquire(K key)
V	acquire(K key, boolean createIfMissing)
protected abstract V	createValueElement(K key)
void	release(K key)
int	size() Returns the number of entries held in the store.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_SEGMENTS

public static final int DEFAULT_SEGMENTS

The default number of lock segments to use

See Also:

Constant Field Values

DEFAULT_CACHED_ELEMENTS_PER_SEGMENT

public static final int DEFAULT_CACHED_ELEMENTS_PER_SEGMENT

The default number of cached elements to hold per segment

See Also:

Constant Field Values

Constructor Detail

ManagedItemStore

protected ManagedItemStore()

Create a ManagedItemStore with the default number of segments and cached elements

ManagedItemStore

protected ManagedItemStore(int noSegments,
                           int noCachedElementsPerSegment)

Method Detail

acquire

public V acquire(K key)

acquire

public V acquire(K key,
                 boolean createIfMissing)

release

public void release(K key)

createValueElement

protected abstract V createValueElement(K key)

size

public final int size()

Returns the number of entries held in the store. (Not atomic).

Returns:

The number of entries in the store.