org.apache.ignite.internal.processors.cache.persistence.evict

Class PageAbstractEvictionTracker

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.evict.PageAbstractEvictionTracker

All Implemented Interfaces:

PageEvictionTracker, LifecycleAware

Direct Known Subclasses:

FairFifoPageEvictionTracker, Random2LruPageEvictionTracker, RandomLruPageEvictionTracker

public abstract class PageAbstractEvictionTracker
extends Object
implements PageEvictionTracker

Field Summary

Fields

Modifier and Type	Field and Description
protected PageMemoryNoStoreImpl	pageMem Page memory.
protected int	trackingSize Tracking array size.

Method Summary

Modifier and Type	Method and Description
protected abstract boolean	checkTouch(long pageId)
boolean	evictionRequired() Check if page eviction is required according to the configured policy.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ignite.internal.processors.cache.persistence.evict.PageEvictionTracker

evictDataPage, forgetPage, touchPage

Methods inherited from interface org.apache.ignite.lifecycle.LifecycleAware

start, stop

Field Detail

pageMem

protected final PageMemoryNoStoreImpl pageMem

Page memory.

trackingSize

protected final int trackingSize

Tracking array size.

Method Detail

evictionRequired

public boolean evictionRequired()

Check if page eviction is required according to the configured policy.

Specified by:

evictionRequired in interface PageEvictionTracker

Returns:

True if eviction required.

checkTouch

protected abstract boolean checkTouch(long pageId)

Parameters:

pageId - Page ID.

Returns:

true if page was touched at least once.