org.hornetq.core.journal.impl

Class AIOSequentialFile

java.lang.Object

org.hornetq.core.journal.impl.AbstractSequentialFile

org.hornetq.core.journal.impl.AIOSequentialFile

All Implemented Interfaces:

IOExceptionListener, SequentialFile

public class AIOSequentialFile
extends AbstractSequentialFile
implements IOExceptionListener

A AIOSequentialFile

Author:

Clebert Suconic

Nested Class Summary

Nested classes/interfaces inherited from class org.hornetq.core.journal.impl.AbstractSequentialFile

AbstractSequentialFile.DelegateCallback, AbstractSequentialFile.LocalBufferObserver

Field Summary

Fields inherited from class org.hornetq.core.journal.impl.AbstractSequentialFile

factory, fileSize, position, timedBuffer, timedBufferObserver, writerExecutor

Constructor Summary

Constructors

Constructor and Description
AIOSequentialFile(SequentialFileFactory factory, int bufferSize, long bufferTimeoutMilliseconds, String directory, String fileName, int maxIO, BufferCallback bufferCallback, Executor writerExecutor, Executor pollerExecutor)

Method Summary

Methods

Modifier and Type	Method and Description
int	calculateBlockStart(int position)
SequentialFile	cloneFile()
void	close()
void	fill(int position, int size, byte fillCharacter)
int	getAlignment()
boolean	isOpen()
protected ByteBuffer	newBuffer(int size, int limit)
void	onIOException(int code, String message)
void	open()
void	open(int maxIO, boolean useExecutor) The maximum number of simultaneous writes accepted
int	read(ByteBuffer bytes)
int	read(ByteBuffer bytes, IOAsyncTask callback)
void	setBufferCallback(BufferCallback callback)
long	size()
void	sync()
String	toString()
void	waitForClose()
void	writeDirect(ByteBuffer bytes, boolean sync) Write directly to the file without using any buffer
void	writeDirect(ByteBuffer bytes, boolean sync, IOAsyncTask callback) Write directly to the file without using any buffer
void	writeInternal(ByteBuffer bytes) Write directly to the file.

Methods inherited from class org.hornetq.core.journal.impl.AbstractSequentialFile

copyTo, delete, exists, fits, getFile, getFileName, position, position, renameTo, setTimedBuffer, write, write, write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

AIOSequentialFile

public AIOSequentialFile(SequentialFileFactory factory,
                 int bufferSize,
                 long bufferTimeoutMilliseconds,
                 String directory,
                 String fileName,
                 int maxIO,
                 BufferCallback bufferCallback,
                 Executor writerExecutor,
                 Executor pollerExecutor)

Method Detail

isOpen

public boolean isOpen()

Specified by:

isOpen in interface SequentialFile

getAlignment

public int getAlignment()
                 throws Exception

Specified by:

getAlignment in interface SequentialFile

Throws:

Exception

calculateBlockStart

public int calculateBlockStart(int position)
                        throws Exception

Specified by:

calculateBlockStart in interface SequentialFile

Throws:

Exception

cloneFile

public SequentialFile cloneFile()

Specified by:

cloneFile in interface SequentialFile

close

public void close()
           throws Exception

Specified by:

close in interface SequentialFile

Overrides:

close in class AbstractSequentialFile

Throws:

Exception

waitForClose

public void waitForClose()
                  throws Exception

Specified by:

waitForClose in interface SequentialFile

Throws:

Exception

fill

public void fill(int position,
        int size,
        byte fillCharacter)
          throws Exception

Specified by:

fill in interface SequentialFile

Throws:

Exception

open

public void open()
          throws Exception

Specified by:

open in interface SequentialFile

Throws:

Exception

open

public void open(int maxIO,
        boolean useExecutor)
          throws Exception

Description copied from interface: SequentialFile

The maximum number of simultaneous writes accepted

Specified by:

open in interface SequentialFile

Throws:

Exception

setBufferCallback

public void setBufferCallback(BufferCallback callback)

read

public int read(ByteBuffer bytes,
       IOAsyncTask callback)
         throws Exception

Specified by:

read in interface SequentialFile

Throws:

Exception

read

public int read(ByteBuffer bytes)
         throws Exception

Specified by:

read in interface SequentialFile

Throws:

Exception

sync

public void sync()
          throws Exception

Specified by:

sync in interface SequentialFile

Throws:

Exception

size

public long size()
          throws Exception

Specified by:

size in interface SequentialFile

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object

onIOException

public void onIOException(int code,
                 String message)

Specified by:

onIOException in interface IOExceptionListener

writeDirect

public void writeDirect(ByteBuffer bytes,
               boolean sync)
                 throws Exception

Description copied from interface: SequentialFile

Write directly to the file without using any buffer

Specified by:

writeDirect in interface SequentialFile

Throws:

Exception

writeDirect

public void writeDirect(ByteBuffer bytes,
               boolean sync,
               IOAsyncTask callback)

Description copied from interface: SequentialFile

Write directly to the file without using any buffer

Specified by:

writeDirect in interface SequentialFile

Parameters:

sync - Not used on AIO

writeInternal

public void writeInternal(ByteBuffer bytes)
                   throws Exception

Description copied from interface: SequentialFile

Write directly to the file. This is used by compacting and other places where we write a big buffer in a single shot. writeInternal should always block until the entire write is sync on disk

Specified by:

writeInternal in interface SequentialFile

Throws:

Exception

newBuffer

protected ByteBuffer newBuffer(int size,
                   int limit)

Overrides:

newBuffer in class AbstractSequentialFile