Class PageCache

java.lang.Object

com.ibm.dtfj.corereaders.PageCache

public class PageCache
extends Object

Simple paging cache, to speedup getMemoryBytes

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	PageCache.Page

Field Summary

Fields

Modifier and Type	Field	Description
protected byte[]	bytes
protected int	evictGrowth
protected int	evictPeriod
protected int	evictTick
int	hiUsage
int	loUsage
protected long	lruBits
protected int	maxGrowth
protected int	maxPeriod
protected static final int	NO_KEY
int	numPages
protected PageCache.Page[]	pages
int	pageSize

Method Summary

Modifier and Type	Method	Description
PageCache.Page	find(int key, long vaddr, int size)
protected void	initialize()

Methods declared in class Object

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

Field Details

bytes

protected byte[] bytes

NO_KEY

protected static final int NO_KEY

See Also:

• Constant Field Values

numPages

public int numPages

pageSize

public int pageSize

hiUsage

public int hiUsage

loUsage

public int loUsage

pages

protected PageCache.Page[] pages

lruBits

protected long lruBits

evictTick

protected int evictTick

evictPeriod

protected int evictPeriod

evictGrowth

protected int evictGrowth

maxPeriod

protected int maxPeriod

maxGrowth

protected int maxGrowth

Method Details

initialize

protected void initialize()

find

public PageCache.Page find(int key,
 long vaddr,
 int size)