org.apache.ignite.internal.processors.cache.persistence.file

Class AlignedBuffersDirectFileIO

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.file.AbstractFileIO

org.apache.ignite.internal.processors.cache.persistence.file.AlignedBuffersDirectFileIO

All Implemented Interfaces:

AutoCloseable, FileIO

public class AlignedBuffersDirectFileIO
extends AbstractFileIO

Limited capabilities Direct IO, which enables file write and read using aligned buffers and O_DIRECT mode. Works only for Linux

Method Summary

Modifier and Type	Method and Description
void	clear()
void	close()
void	force()
void	force(boolean withMetadata)
int	getFileSystemBlockSize()
long	getSparseSize()
MappedByteBuffer	map(int sizeBytes)
long	position()
void	position(long newPosition)
int	punchHole(long position, int len)
int	read(byte[] buf, int off, int len)
int	read(ByteBuffer destBuf)
int	read(ByteBuffer destBuf, long filePosition)
long	size()
int	write(byte[] buf, int off, int len)
int	write(ByteBuffer srcBuf)
int	write(ByteBuffer srcBuf, long filePosition)

Methods inherited from class org.apache.ignite.internal.processors.cache.persistence.file.AbstractFileIO

readFully, readFully, readFully, writeFully, writeFully, writeFully

Methods inherited from class java.lang.Object

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

Method Detail

getFileSystemBlockSize

public int getFileSystemBlockSize()

getSparseSize

public long getSparseSize()

punchHole

public int punchHole(long position,
                     int len)

position

public long position()
              throws IOException

Throws:

IOException

position

public void position(long newPosition)
              throws IOException

Throws:

IOException

read

public int read(ByteBuffer destBuf)
         throws IOException

Throws:

IOException

read

public int read(ByteBuffer destBuf,
                long filePosition)
         throws IOException

Throws:

IOException

read

public int read(byte[] buf,
                int off,
                int len)
         throws IOException

Throws:

IOException

write

public int write(ByteBuffer srcBuf)
          throws IOException

Throws:

IOException

write

public int write(ByteBuffer srcBuf,
                 long filePosition)
          throws IOException

Throws:

IOException

write

public int write(byte[] buf,
                 int off,
                 int len)
          throws IOException

Throws:

IOException

map

public MappedByteBuffer map(int sizeBytes)
                     throws IOException

Throws:

IOException

force

public void force()
           throws IOException

Throws:

IOException

force

public void force(boolean withMetadata)
           throws IOException

Throws:

IOException

size

public long size()
          throws IOException

Throws:

IOException

clear

public void clear()
           throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Throws:

IOException