Module org.elasticsearch.nativeaccess

Package org.elasticsearch.nativeaccess.jdk

Class PosixCloseableMappedByteBuffer

java.lang.Object

org.elasticsearch.nativeaccess.jdk.JdkCloseableMappedByteBuffer

org.elasticsearch.nativeaccess.jdk.PosixCloseableMappedByteBuffer

All Implemented Interfaces:

AutoCloseable, CloseableByteBuffer, CloseableMappedByteBuffer

public class PosixCloseableMappedByteBuffer
extends JdkCloseableMappedByteBuffer

Field Summary

Fields inherited from class org.elasticsearch.nativeaccess.jdk.JdkCloseableMappedByteBuffer

segment

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PosixCloseableMappedByteBuffer(MemorySegment seg, Arena arena)

Method Summary

Modifier and Type	Method	Description
void	madvise(long offset, long length, int advice)	Advises the operating system about the expected access pattern for the specified memory region, allowing the kernel to optimize paging behavior.
static PosixCloseableMappedByteBuffer	ofShared(FileChannel fileChannel, FileChannel.MapMode mode, long position, long size)
void	prefetch(long offset, long length)	Prefetches the given offset and length.
PosixCloseableMappedByteBuffer	slice(long index, long length)	Returns a slice of this buffer.

Methods inherited from class org.elasticsearch.nativeaccess.jdk.JdkCloseableMappedByteBuffer

buffer, close

Methods inherited from class java.lang.Object

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

Constructor Details

PosixCloseableMappedByteBuffer

protected PosixCloseableMappedByteBuffer(MemorySegment seg,
 Arena arena)

Method Details

ofShared

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

Throws:

IOException

slice

public PosixCloseableMappedByteBuffer 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

Overrides:

slice in class JdkCloseableMappedByteBuffer

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

Overrides:

prefetch in class JdkCloseableMappedByteBuffer

madvise

public void madvise(long offset,
 long length,
 int advice)

Description copied from interface: CloseableMappedByteBuffer

Advises the operating system about the expected access pattern for the specified memory region, allowing the kernel to optimize paging behavior.

Specified by:

madvise in interface CloseableMappedByteBuffer

Overrides:

madvise in class JdkCloseableMappedByteBuffer

Parameters:

offset - the starting offset within the buffer

length - the length of the region in bytes

advice - the access pattern advice; see MadviseAdvice constants