Module org.elasticsearch.nativeaccess

Package org.elasticsearch.nativeaccess.jdk

Class JdkCloseableMappedByteBuffer

java.lang.Object

org.elasticsearch.nativeaccess.jdk.JdkCloseableMappedByteBuffer

All Implemented Interfaces:

AutoCloseable, CloseableByteBuffer, CloseableMappedByteBuffer

Direct Known Subclasses:

PosixCloseableMappedByteBuffer

public class JdkCloseableMappedByteBuffer
extends Object
implements CloseableMappedByteBuffer

JdkCloseableMappedByteBuffer relies on preview features of the Java platform:

• JdkCloseableMappedByteBuffer refers to one or more preview APIs: Arena, MemorySegment.

Programs can only use JdkCloseableMappedByteBuffer when preview features are enabled.

Preview features may be removed in a future release, or upgraded to permanent features of the Java platform.

Field Summary

Fields

Modifier and Type	Field	Description
protected final MemorySegmentPREVIEW	segment

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JdkCloseableMappedByteBuffer(MemorySegmentPREVIEW seg, ArenaPREVIEW arena)

Method Summary

Modifier and Type	Method	Description
MappedByteBuffer	buffer()	Returns the wrapped ByteBuffer.
void	close()
static JdkCloseableMappedByteBuffer	ofShared(FileChannel fileChannel, FileChannel.MapMode mode, long position, long size)
void	prefetch(long offset, long length)	Prefetches the given offset and length.
CloseableMappedByteBuffer	slice(long index, long length)	Returns a slice of this buffer.

Methods inherited from class java.lang.Object

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

Field Details

segment

protected final MemorySegmentPREVIEW segment

Constructor Details

JdkCloseableMappedByteBuffer

protected JdkCloseableMappedByteBuffer(MemorySegmentPREVIEW seg,
 ArenaPREVIEW arena)

Method Details

ofShared

public static JdkCloseableMappedByteBuffer ofShared(FileChannel fileChannel,
 FileChannel.MapMode mode,
 long position,
 long size)
                                             throws IOException

Throws:

IOException

buffer

public MappedByteBuffer buffer()

Description copied from interface: CloseableByteBuffer

Returns the wrapped ByteBuffer.

Specified by:

buffer in interface CloseableByteBuffer

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface CloseableByteBuffer

slice

public CloseableMappedByteBuffer slice(long index,
 long length)

Description copied from interface: CloseableMappedByteBuffer

Returns a slice of this buffer. Closing a slice does not close it's parent.

Specified by:

slice in interface CloseableMappedByteBuffer

prefetch

public void prefetch(long offset,
 long length)

Description copied from interface: CloseableMappedByteBuffer

Prefetches the given offset and length.

Specified by:

prefetch in interface CloseableMappedByteBuffer