org.terracotta.offheapstore.paging

Class UnlimitedPageSource

java.lang.Object

org.terracotta.offheapstore.paging.UnlimitedPageSource

All Implemented Interfaces:

PageSource

public class UnlimitedPageSource
extends Object
implements PageSource

Author:

cdennis

Constructor Summary

Constructors

Constructor and Description
UnlimitedPageSource(BufferSource source)

Method Summary

Modifier and Type	Method and Description
Page	allocate(int size, boolean thief, boolean victim, OffHeapStorageArea owner) Attempt to allocate a page of the given size.
void	free(Page page)

Methods inherited from class java.lang.Object

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

Constructor Detail

UnlimitedPageSource

public UnlimitedPageSource(BufferSource source)

Method Detail

allocate

public Page allocate(int size,
                     boolean thief,
                     boolean victim,
                     OffHeapStorageArea owner)

Description copied from interface: PageSource

Attempt to allocate a page of the given size.

Allocations identified as thieves will if necessary 'steal' space from previous allocations identified as 'victims' in order to fulfill the allocation request. owner is the area from which the returned page can subsequently be stolen or recovered. This is most likely to be the calling instance.

Specified by:

allocate in interface PageSource

Parameters:

size - size of page to allocate

thief - true if the allocation can steal space from victims

victim - true if the allocated page should be eligible for stealing

owner - owner from which subsequent steal should occur

Returns:

an allocated page, or null in the case of failure

free

public void free(Page page)

Specified by:

free in interface PageSource