com.orientechnologies.orient.core.storage.cache

Class OCachePointer

java.lang.Object

com.orientechnologies.orient.core.storage.cache.OCachePointer

public class OCachePointer
extends Object

Since:

05.08.13

Author:

Andrey Lomakin

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	OCachePointer.WritersListener

Constructor Summary

Constructors

Constructor and Description
OCachePointer(ByteBuffer buffer, OByteBufferPool bufferPool, OLogSequenceNumber lastFlushedLsn, long fileId, long pageIndex)

Method Summary

Modifier and Type	Method and Description
void	acquireExclusiveLock()
void	acquireSharedLock()
void	decrementReadersReferrer()
void	decrementReferrer()
void	decrementWritersReferrer()
boolean	equals(Object o)
protected void	finalize()
ByteBuffer	getBufferDuplicate()
ByteBuffer	getExclusiveBuffer()
long	getFileId()
OLogSequenceNumber	getLastFlushedLsn()
long	getPageIndex()
int	hashCode()
void	incrementReadersReferrer()
void	incrementReferrer()
void	incrementWritersReferrer()
boolean	isLockAcquiredByCurrentThread() DEBUG only !!!
void	releaseExclusiveLock()
void	releaseSharedLock()
void	setLastFlushedLsn(OLogSequenceNumber lastFlushedLsn)
void	setWritersListener(OCachePointer.WritersListener writersListener)
String	toString()
boolean	tryAcquireExclusiveLock()
boolean	tryAcquireSharedLock()

Methods inherited from class java.lang.Object

clone, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

OCachePointer

public OCachePointer(ByteBuffer buffer,
                     OByteBufferPool bufferPool,
                     OLogSequenceNumber lastFlushedLsn,
                     long fileId,
                     long pageIndex)

Method Detail

setWritersListener

public void setWritersListener(OCachePointer.WritersListener writersListener)

getFileId

public long getFileId()

getPageIndex

public long getPageIndex()

getLastFlushedLsn

public OLogSequenceNumber getLastFlushedLsn()

setLastFlushedLsn

public void setLastFlushedLsn(OLogSequenceNumber lastFlushedLsn)

incrementReadersReferrer

public void incrementReadersReferrer()

decrementReadersReferrer

public void decrementReadersReferrer()

incrementWritersReferrer

public void incrementWritersReferrer()

decrementWritersReferrer

public void decrementWritersReferrer()

isLockAcquiredByCurrentThread

public boolean isLockAcquiredByCurrentThread()

DEBUG only !!!

Returns:

Whether pointer lock (read or write )is acquired

incrementReferrer

public void incrementReferrer()

decrementReferrer

public void decrementReferrer()

getExclusiveBuffer

public ByteBuffer getExclusiveBuffer()

getBufferDuplicate

public ByteBuffer getBufferDuplicate()

acquireExclusiveLock

public void acquireExclusiveLock()

tryAcquireExclusiveLock

public boolean tryAcquireExclusiveLock()

releaseExclusiveLock

public void releaseExclusiveLock()

acquireSharedLock

public void acquireSharedLock()

releaseSharedLock

public void releaseSharedLock()

tryAcquireSharedLock

public boolean tryAcquireSharedLock()

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object