Package one.nio.mem

Class MappedFile

java.lang.Object

one.nio.mem.MappedFile

All Implemented Interfaces:

Closeable, AutoCloseable

public class MappedFile
extends Object
implements Closeable

Field Summary

Fields

Modifier and Type	Field	Description
private final long	addr
private final RandomAccessFile	file
private static final Method	force0
static final int	MAP_PV
static final int	MAP_RO
static final int	MAP_RW
private int	mode
private final long	size
private int	state
private static final int	STATE_CLOSED
private static final int	STATE_MALLOC
private static final int	STATE_MMAP

Constructor Summary

Constructors

Constructor	Description
MappedFile(long size)
MappedFile(String name, long size)
MappedFile(String name, long size, int mode)

Method Summary

Modifier and Type	Method	Description
void	close()
DataStream	dataStream(ByteOrder order)
final long	getAddr()
final RandomAccessFile	getFile()
int	getMode()
final long	getSize()
void	makeReadonly()
static long	map(RandomAccessFile f, int mode, long start, long size)
void	sync()
static void	unmap(long start, long size)

Methods inherited from class java.lang.Object

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

Field Details

force0

private static final Method force0

STATE_CLOSED

private static final int STATE_CLOSED

See Also:

• Constant Field Values

STATE_MALLOC

private static final int STATE_MALLOC

See Also:

• Constant Field Values

STATE_MMAP

private static final int STATE_MMAP

See Also:

• Constant Field Values

MAP_RO

public static final int MAP_RO

See Also:

• Constant Field Values

MAP_RW

public static final int MAP_RW

See Also:

• Constant Field Values

MAP_PV

public static final int MAP_PV

See Also:

• Constant Field Values

file

private final RandomAccessFile file

addr

private final long addr

size

private final long size

mode

private int mode

state

private int state

Constructor Details

MappedFile

public MappedFile(long size)

MappedFile

public MappedFile(String name,
 long size)
           throws IOException

Throws:

IOException

MappedFile

public MappedFile(String name,
 long size,
 int mode)
           throws IOException

Throws:

IOException

Method Details

sync

public void sync()
          throws IOException

Throws:

IOException

makeReadonly

public void makeReadonly()
                  throws IOException

Throws:

IOException

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

getFile

public final RandomAccessFile getFile()

getAddr

public final long getAddr()

getSize

public final long getSize()

getMode

public int getMode()

dataStream

public DataStream dataStream(ByteOrder order)

map

public static long map(RandomAccessFile f,
 int mode,
 long start,
 long size)
                throws IOException

Throws:

IOException

unmap

public static void unmap(long start,
 long size)