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

Class PageHandler<X,R>

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.tree.util.PageHandler<X,R>

Direct Known Subclasses:

BPlusTree.Insert, BPlusTree.Replace, BPlusTree.Search

public abstract class PageHandler<X,R>
extends Object

Page handler.

Constructor Summary

Constructors

Constructor and Description
PageHandler()

Method Summary

Modifier and Type	Method and Description
static void	copyMemory(ByteBuffer src, long srcOff, ByteBuffer dst, long dstOff, long cnt)
static void	copyMemory(long srcAddr, long srcOff, long dstAddr, long dstOff, long cnt)
static void	initPage(PageMemory pageMem, int grpId, long pageId, PageIO init, IgniteWriteAheadLogManager wal, PageLockListener lsnr, IoStatisticsHolder statHolder)
static boolean	isWalDeltaRecordNeeded(PageSupport pageMem, int cacheId, long pageId, long page, IgniteWriteAheadLogManager wal, @Nullable Boolean walPlc)
static long	readLock(PageMemory pageMem, int cacheId, long pageId, long page, PageLockListener lsnr)
static <X,R> R	readPage(PageMemory pageMem, int cacheId, long pageId, long page, PageLockListener lsnr, PageHandler<X,R> h, X arg, int intArg, R lockFailed, IoStatisticsHolder statHolder)
static <X,R> R	readPage(PageMemory pageMem, int cacheId, long pageId, PageLockListener lsnr, PageHandler<X,R> h, X arg, int intArg, R lockFailed, IoStatisticsHolder statHolder)
static void	readUnlock(PageMemory pageMem, int cacheId, long pageId, long page, long pageAddr, PageLockListener lsnr)
boolean	releaseAfterWrite(int cacheId, long pageId, long page, long pageAddr, X arg, int intArg)
abstract R	run(int cacheId, long pageId, long page, long pageAddr, PageIO io, Boolean walPlc, X arg, int intArg, IoStatisticsHolder statHolder)
static long	writeLock(PageMemory pageMem, int cacheId, long pageId, long page, PageLockListener lsnr, boolean tryLock)
static <X,R> R	writePage(PageMemory pageMem, int grpId, long pageId, long page, PageLockListener lsnr, PageHandler<X,R> h, PageIO init, IgniteWriteAheadLogManager wal, Boolean walPlc, X arg, int intArg, R lockFailed, IoStatisticsHolder statHolder)
static <X,R> R	writePage(PageMemory pageMem, int grpId, long pageId, PageLockListener lsnr, PageHandler<X,R> h, PageIO init, IgniteWriteAheadLogManager wal, Boolean walPlc, X arg, int intArg, R lockFailed, IoStatisticsHolder statHolder)
static void	writeUnlock(PageMemory pageMem, int cacheId, long pageId, long page, long pageAddr, PageLockListener lsnr, Boolean walPlc, boolean dirty)
static void	zeroMemory(ByteBuffer buf, int off, int len) Will zero memory in buf
static void	zeroMemory(long addr, int off, int len)

Methods inherited from class java.lang.Object

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

Constructor Detail

PageHandler

public PageHandler()

Method Detail

run

public abstract R run(int cacheId,
                      long pageId,
                      long page,
                      long pageAddr,
                      PageIO io,
                      Boolean walPlc,
                      X arg,
                      int intArg,
                      IoStatisticsHolder statHolder)
               throws IgniteCheckedException

Parameters:

cacheId - Cache ID.

pageId - Page ID.

page - Page absolute pointer.

pageAddr - Page address.

io - IO.

walPlc - Full page WAL record policy.

arg - Argument.

intArg - Argument of type int.

statHolder - Statistics holder to track IO operations.

Returns:

Result.

Throws:

IgniteCheckedException - If failed.

releaseAfterWrite

public boolean releaseAfterWrite(int cacheId,
                                 long pageId,
                                 long page,
                                 long pageAddr,
                                 X arg,
                                 int intArg)

Parameters:

cacheId - Cache ID.

pageId - Page ID.

page - Page pointer.

pageAddr - Page address.

arg - Argument.

intArg - Argument of type int.

Returns:

true If release.

readPage

public static <X,R> R readPage(PageMemory pageMem,
                               int cacheId,
                               long pageId,
                               PageLockListener lsnr,
                               PageHandler<X,R> h,
                               X arg,
                               int intArg,
                               R lockFailed,
                               IoStatisticsHolder statHolder)
                        throws IgniteCheckedException

Parameters:

pageMem - Page memory.

cacheId - Cache ID.

pageId - Page ID.

lsnr - Lock listener.

h - Handler.

arg - Argument.

intArg - Argument of type int.

lockFailed - Result in case of lock failure due to page recycling.

statHolder - Statistics holder to track IO operations.

Returns:

Handler result.

Throws:

IgniteCheckedException - If failed.

readPage

public static <X,R> R readPage(PageMemory pageMem,
                               int cacheId,
                               long pageId,
                               long page,
                               PageLockListener lsnr,
                               PageHandler<X,R> h,
                               X arg,
                               int intArg,
                               R lockFailed,
                               IoStatisticsHolder statHolder)
                        throws IgniteCheckedException

Parameters:

pageMem - Page memory.

cacheId - Cache ID.

pageId - Page ID.

page - Page pointer.

lsnr - Lock listener.

h - Handler.

arg - Argument.

intArg - Argument of type int.

lockFailed - Result in case of lock failure due to page recycling.

statHolder - Statistics holder to track IO operations.

Returns:

Handler result.

Throws:

IgniteCheckedException - If failed.

readLock

public static long readLock(PageMemory pageMem,
                            int cacheId,
                            long pageId,
                            long page,
                            PageLockListener lsnr)

Parameters:

pageMem - Page memory.

cacheId - Cache ID.

pageId - Page ID.

page - Page pointer.

lsnr - Lock listener.

Returns:

Page address.

readUnlock

public static void readUnlock(PageMemory pageMem,
                              int cacheId,
                              long pageId,
                              long page,
                              long pageAddr,
                              PageLockListener lsnr)

Parameters:

pageMem - Page memory.

cacheId - Cache ID.

pageId - Page ID.

page - Page pointer.

pageAddr - Page address (for-write pointer)

lsnr - Lock listener.

initPage

public static void initPage(PageMemory pageMem,
                            int grpId,
                            long pageId,
                            PageIO init,
                            IgniteWriteAheadLogManager wal,
                            PageLockListener lsnr,
                            IoStatisticsHolder statHolder)
                     throws IgniteCheckedException

Parameters:

pageMem - Page memory.

grpId - Group ID.

pageId - Page ID.

init - IO for new page initialization.

wal - Write ahead log.

lsnr - Lock listener.

statHolder - Statistics holder to track IO operations.

Throws:

IgniteCheckedException - If failed.

writePage

public static <X,R> R writePage(PageMemory pageMem,
                                int grpId,
                                long pageId,
                                PageLockListener lsnr,
                                PageHandler<X,R> h,
                                PageIO init,
                                IgniteWriteAheadLogManager wal,
                                Boolean walPlc,
                                X arg,
                                int intArg,
                                R lockFailed,
                                IoStatisticsHolder statHolder)
                         throws IgniteCheckedException

Parameters:

pageMem - Page memory.

grpId - Group ID.

pageId - Page ID.

lsnr - Lock listener.

h - Handler.

init - IO for new page initialization or null if it is an existing page.

wal - Write ahead log.

walPlc - Full page WAL record policy.

arg - Argument.

intArg - Argument of type int.

lockFailed - Result in case of lock failure due to page recycling.

statHolder - Statistics holder to track IO operations.

Returns:

Handler result.

Throws:

IgniteCheckedException - If failed.

writePage

public static <X,R> R writePage(PageMemory pageMem,
                                int grpId,
                                long pageId,
                                long page,
                                PageLockListener lsnr,
                                PageHandler<X,R> h,
                                PageIO init,
                                IgniteWriteAheadLogManager wal,
                                Boolean walPlc,
                                X arg,
                                int intArg,
                                R lockFailed,
                                IoStatisticsHolder statHolder)
                         throws IgniteCheckedException

Parameters:

pageMem - Page memory.

grpId - Group ID.

pageId - Page ID.

page - Page pointer.

lsnr - Lock listener.

h - Handler.

init - IO for new page initialization or null if it is an existing page.

wal - Write ahead log.

walPlc - Full page WAL record policy.

arg - Argument.

intArg - Argument of type int.

lockFailed - Result in case of lock failure due to page recycling.

statHolder - Statistics holder to track IO operations.

Returns:

Handler result.

Throws:

IgniteCheckedException - If failed.

writeUnlock

public static void writeUnlock(PageMemory pageMem,
                               int cacheId,
                               long pageId,
                               long page,
                               long pageAddr,
                               PageLockListener lsnr,
                               Boolean walPlc,
                               boolean dirty)

Parameters:

pageMem - Page memory.

cacheId - Cache ID.

pageId - Page ID.

page - Page pointer.

pageAddr - Page address.

lsnr - Lock listener.

walPlc - Full page WAL record policy.

dirty - Page is dirty.

writeLock

public static long writeLock(PageMemory pageMem,
                             int cacheId,
                             long pageId,
                             long page,
                             PageLockListener lsnr,
                             boolean tryLock)

Parameters:

pageMem - Page memory.

cacheId - Cache ID.

pageId - Page ID.

page - Page pointer.

lsnr - Lock listener.

tryLock - Only try to lock without waiting.

Returns:

Page address or 0 if failed to lock due to recycling.

isWalDeltaRecordNeeded

public static boolean isWalDeltaRecordNeeded(PageSupport pageMem,
                                             int cacheId,
                                             long pageId,
                                             long page,
                                             IgniteWriteAheadLogManager wal,
                                             @Nullable
                                             @Nullable Boolean walPlc)

Parameters:

pageMem - Page memory.

cacheId - Cache ID.

pageId - Page ID.

page - Page pointer.

wal - Write ahead log.

walPlc - Full page WAL record policy.

Returns:

true If we need to make a delta WAL record for the change in this page.

copyMemory

public static void copyMemory(ByteBuffer src,
                              long srcOff,
                              ByteBuffer dst,
                              long dstOff,
                              long cnt)

Parameters:

src - Source.

srcOff - Source offset in bytes.

dst - Destination.

dstOff - Destination offset in bytes.

cnt - Bytes count to copy.

zeroMemory

public static void zeroMemory(ByteBuffer buf,
                              int off,
                              int len)

Will zero memory in buf

Parameters:

buf - Buffer.

off - Offset.

len - Length.

copyMemory

public static void copyMemory(long srcAddr,
                              long srcOff,
                              long dstAddr,
                              long dstOff,
                              long cnt)

Parameters:

srcAddr - Source.

srcOff - Source offset in bytes.

dstAddr - Destination.

dstOff - Destination offset in bytes.

cnt - Bytes count to copy.

zeroMemory

public static void zeroMemory(long addr,
                              int off,
                              int len)

Parameters:

addr - Address.

off - Offset.

len - Length.