Package org.apache.activemq.artemis.core.io.aio

Class AIOSequentialFileFactory

java.lang.Object

org.apache.activemq.artemis.core.io.AbstractSequentialFileFactory

org.apache.activemq.artemis.core.io.aio.AIOSequentialFileFactory

All Implemented Interfaces:

SequentialFileFactory

public final class AIOSequentialFileFactory
extends AbstractSequentialFileFactory

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	AIOSequentialFileFactory.AIOSequentialCallback	The same callback is used for Runnable executor.

Field Summary

Fields inherited from class org.apache.activemq.artemis.core.io.AbstractSequentialFileFactory

alignment, bufferSize, bufferTimeout, critialErrorListener, criticalAnalyzer, dataSync, EXECUTOR_TIMEOUT, journalDir, maxIO, timedBuffer, writeExecutor

Constructor Summary

Constructors

Constructor	Description
AIOSequentialFileFactory(File journalDir, int maxIO)
AIOSequentialFileFactory(File journalDir, int bufferSize, int bufferTimeout, int maxIO, boolean logRates)
AIOSequentialFileFactory(File journalDir, int bufferSize, int bufferTimeout, int maxIO, boolean logRates, IOCriticalErrorListener listener, org.apache.activemq.artemis.utils.critical.CriticalAnalyzer analyzer)
AIOSequentialFileFactory(File journalDir, IOCriticalErrorListener listener, int maxIO)

Method Summary

Modifier and Type	Method	Description
void	afterClose()
ByteBuffer	allocateDirectBuffer(int size)	used for cases where you need direct buffer outside of the journal context.
void	beforeClose()
int	calculateBlockSize(int position)
void	clearBuffer(ByteBuffer directByteBuffer)
SequentialFile	createSequentialFile(String fileName)
void	disableBufferReuse()
void	enableBufferReuse()
int	getAlignment()
AIOSequentialFileFactory.AIOSequentialCallback	getCallback()
static boolean	isSupported()
static boolean	isSupported(File journalPath)
boolean	isSupportsCallbacks()
boolean	isSyncSupported()
ByteBuffer	newBuffer(int size)	Note: You need to release the buffer if is used for reading operations.
ByteBuffer	newBuffer(int size, boolean zeroed)	Note: You need to release the buffer if is used for reading operations.
void	releaseBuffer(ByteBuffer buffer)
void	releaseDirectBuffer(ByteBuffer buffer)	used for cases where you need direct buffer outside of the journal context.
void	start()
void	stop()
String	toString()
ByteBuffer	wrapBuffer(byte[] bytes)

Methods inherited from class org.apache.activemq.artemis.core.io.AbstractSequentialFileFactory

activateBuffer, createDirs, deactivateBuffer, flush, getBufferSize, getCriticalAnalyzer, getCriticalErrorListener, getDirectory, getMaxIO, isDatasync, listFiles, onIOError, setAlignment, setCriticalErrorListener, setDatasync

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.activemq.artemis.core.io.SequentialFileFactory

createSequentialFile, getDirectoryName, onIOError, onIOError, supportsIndividualContext

Constructor Details

AIOSequentialFileFactory

public AIOSequentialFileFactory(File journalDir,
 int maxIO)

AIOSequentialFileFactory

public AIOSequentialFileFactory(File journalDir,
 IOCriticalErrorListener listener,
 int maxIO)

AIOSequentialFileFactory

public AIOSequentialFileFactory(File journalDir,
 int bufferSize,
 int bufferTimeout,
 int maxIO,
 boolean logRates)

AIOSequentialFileFactory

public AIOSequentialFileFactory(File journalDir,
 int bufferSize,
 int bufferTimeout,
 int maxIO,
 boolean logRates,
 IOCriticalErrorListener listener,
 org.apache.activemq.artemis.utils.critical.CriticalAnalyzer analyzer)

Method Details

isSyncSupported

public boolean isSyncSupported()

beforeClose

public void beforeClose()

afterClose

public void afterClose()

getCallback

public AIOSequentialFileFactory.AIOSequentialCallback getCallback()

enableBufferReuse

public void enableBufferReuse()

disableBufferReuse

public void disableBufferReuse()

createSequentialFile

public SequentialFile createSequentialFile(String fileName)

isSupportsCallbacks

public boolean isSupportsCallbacks()

isSupported

public static boolean isSupported()

isSupported

public static boolean isSupported(File journalPath)

allocateDirectBuffer

public ByteBuffer allocateDirectBuffer(int size)

Description copied from interface: SequentialFileFactory

used for cases where you need direct buffer outside of the journal context. This is because the native layer has a method that can be reused in certain cases like paging

releaseDirectBuffer

public void releaseDirectBuffer(ByteBuffer buffer)

Description copied from interface: SequentialFileFactory

used for cases where you need direct buffer outside of the journal context. This is because the native layer has a method that can be reused in certain cases like paging

newBuffer

public ByteBuffer newBuffer(int size)

Description copied from interface: SequentialFileFactory

Note: You need to release the buffer if is used for reading operations. You don't need to do it if using writing operations (AIO Buffer Lister will take of writing operations)

Returns:

the allocated ByteBuffer

newBuffer

public ByteBuffer newBuffer(int size,
 boolean zeroed)

Description copied from interface: SequentialFileFactory

Note: You need to release the buffer if is used for reading operations. You don't need to do it if using writing operations (AIO Buffer Lister will take of writing operations)

zeroed - if true the returned ByteBuffer must be zeroed, otherwise it tries to save zeroing it.

Returns:

the allocated ByteBuffer

clearBuffer

public void clearBuffer(ByteBuffer directByteBuffer)

getAlignment

public int getAlignment()

Specified by:

getAlignment in interface SequentialFileFactory

Overrides:

getAlignment in class AbstractSequentialFileFactory

wrapBuffer

public ByteBuffer wrapBuffer(byte[] bytes)

calculateBlockSize

public int calculateBlockSize(int position)

releaseBuffer

public void releaseBuffer(ByteBuffer buffer)

Specified by:

releaseBuffer in interface SequentialFileFactory

Overrides:

releaseBuffer in class AbstractSequentialFileFactory

start

public void start()

Specified by:

start in interface SequentialFileFactory

Overrides:

start in class AbstractSequentialFileFactory

stop

public void stop()

Specified by:

stop in interface SequentialFileFactory

Overrides:

stop in class AbstractSequentialFileFactory

toString

public String toString()

Overrides:

toString in class Object