org.apache.ignite.internal.pagemem

Interface PageMemory

All Superinterfaces:

LifecycleAware, PageIdAllocator, PageSupport

All Known Subinterfaces:

PageMemoryEx

All Known Implementing Classes:

PageMemoryImpl, PageMemoryNoStoreImpl

public interface PageMemory
extends LifecycleAware, PageIdAllocator, PageSupport

Field Summary

Fields inherited from interface org.apache.ignite.internal.pagemem.PageIdAllocator

FLAG_DATA, FLAG_IDX, INDEX_PARTITION, MAX_PARTITION_ID

Method Summary

Modifier and Type	Method and Description
int	checkpointBufferPagesCount() Number of pages used in checkpoint buffer.
long	loadedPages()
ByteBuffer	pageBuffer(long pageAddr)
int	pageSize()
int	systemPageSize()

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

start, stop

Methods inherited from interface org.apache.ignite.internal.pagemem.PageIdAllocator

allocatePage, freePage

Methods inherited from interface org.apache.ignite.internal.pagemem.PageSupport

acquirePage, isDirty, readLock, readLockForce, readUnlock, releasePage, tryWriteLock, writeLock, writeUnlock

Method Detail

pageSize

int pageSize()

Returns:

Page size in bytes.

systemPageSize

int systemPageSize()

Returns:

Page size with system overhead, in bytes.

pageBuffer

ByteBuffer pageBuffer(long pageAddr)

Parameters:

pageAddr - Page address.

Returns:

Page byte buffer.

loadedPages

long loadedPages()

Returns:

Total number of loaded pages in memory.

checkpointBufferPagesCount

int checkpointBufferPagesCount()

Number of pages used in checkpoint buffer.