Package org.apache.lucene.store

Class NativePosixUtil

java.lang.Object

org.apache.lucene.store.NativePosixUtil

public final class NativePosixUtil
extends Object

Provides JNI access to native methods such as madvise() for NativeUnixDirectory

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DONTNEED
static final int	NOREUSE
static final int	NORMAL
static final int	RANDOM
static final int	SEQUENTIAL
static final int	WILLNEED

Constructor Summary

Constructors

Constructor	Description
NativePosixUtil()

Method Summary

Modifier and Type	Method	Description
static void	advise(FileDescriptor fd, long offset, long len, int advise)
static int	madvise(ByteBuffer buf, int advise)
static FileDescriptor	open_direct(String filename, boolean read)
static int	posix_madvise(ByteBuffer buf, int advise)
static long	pread(FileDescriptor fd, long pos, ByteBuffer byteBuf)

Methods inherited from class java.lang.Object

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

Field Details

NORMAL

public static final int NORMAL

See Also:

• Constant Field Values

SEQUENTIAL

public static final int SEQUENTIAL

See Also:

• Constant Field Values

RANDOM

public static final int RANDOM

See Also:

• Constant Field Values

WILLNEED

public static final int WILLNEED

See Also:

• Constant Field Values

DONTNEED

public static final int DONTNEED

See Also:

• Constant Field Values

NOREUSE

public static final int NOREUSE

See Also:

• Constant Field Values

Constructor Details

NativePosixUtil

public NativePosixUtil()

Method Details

posix_madvise

public static int posix_madvise(ByteBuffer buf,
 int advise)
                         throws IOException

Throws:

IOException

madvise

public static int madvise(ByteBuffer buf,
 int advise)
                   throws IOException

Throws:

IOException

open_direct

public static FileDescriptor open_direct(String filename,
 boolean read)
                                  throws IOException

Throws:

IOException

pread

public static long pread(FileDescriptor fd,
 long pos,
 ByteBuffer byteBuf)
                  throws IOException

Throws:

IOException

advise

public static void advise(FileDescriptor fd,
 long offset,
 long len,
 int advise)
                   throws IOException

Throws:

IOException