org.apache.ignite.internal.processors.cache.persistence.tree.reuse

Interface ReuseList

All Known Implementing Classes:

AbstractFreeList, CacheFreeList, PartitionMetaStorageImpl, ReuseListImpl

public interface ReuseList

Reuse list.

Method Summary

Modifier and Type	Method and Description
void	addForRecycle(ReuseBag bag)
long	initRecycledPage(long pageId, byte flag, @Nullable PageIO initIO) Converts recycled page id back to a usable id.
long	recycledPagesCount()
long	takeRecycledPage()

Method Detail

addForRecycle

void addForRecycle(ReuseBag bag)
            throws IgniteCheckedException

Parameters:

bag - Reuse bag.

Throws:

IgniteCheckedException - If failed.

takeRecycledPage

long takeRecycledPage()
               throws IgniteCheckedException

Returns:

Page ID or 0 if none available.

Throws:

IgniteCheckedException - If failed.

recycledPagesCount

long recycledPagesCount()
                 throws IgniteCheckedException

Returns:

Number of recycled pages it contains.

Throws:

IgniteCheckedException - If failed.

initRecycledPage

long initRecycledPage(long pageId,
                      byte flag,
                      @Nullable
                      @Nullable PageIO initIO)
               throws IgniteCheckedException

Converts recycled page id back to a usable id. Might modify page content as well if flag is changing.

Parameters:

pageId - Id of the recycled page.

flag - Flag value for the page. One of PageIdAllocator.FLAG_DATA, PageIdAllocator.FLAG_IDX or PageIdAllocator.FLAG_AUX.

initIO - Page IO to reinit reused page.

Returns:

Updated page id.

Throws:

IgniteCheckedException - If failed.

See Also:

FullPageId