Module java.base

Package java.lang.foreign

Interface PaddingLayout

All Superinterfaces:

MemoryLayout

public sealed interface PaddingLayout
extends MemoryLayout

A padding layout. A padding layout specifies the size of extra space which is typically not accessed by applications, and is typically used for aligning member layouts around word boundaries.

Implementation Requirements:

Implementing classes are immutable, thread-safe and value-based.

Since:

22

Nested Class Summary

Nested classes/interfaces declared in interface java.lang.foreign.MemoryLayout

MemoryLayout.PathElement

Method Summary

Modifier and Type	Method	Description
PaddingLayout	withByteAlignment(long byteAlignment)	Returns a memory layout with the same characteristics as this layout, but with the given alignment constraint (in bytes).
PaddingLayout	withName(String name)	Returns a memory layout with the same characteristics as this layout, but with the given name.
PaddingLayout	withoutName()	Returns a memory layout with the same characteristics as this layout, but with no name.

Methods declared in interface java.lang.foreign.MemoryLayout

arrayElementVarHandle, byteAlignment, byteOffset, byteOffsetHandle, byteSize, equals, hashCode, name, scale, scaleHandle, select, sliceHandle, toString, varHandle

Method Details

withName

PaddingLayout withName(String name)

Returns a memory layout with the same characteristics as this layout, but with the given name.

Specified by:

withName in interface MemoryLayout

Parameters:

name - the layout name

Returns:

a memory layout with the same characteristics as this layout, but with the given name

See Also:

• MemoryLayout.name()

withoutName

PaddingLayout withoutName()

Returns a memory layout with the same characteristics as this layout, but with no name.

Specified by:

withoutName in interface MemoryLayout

Returns:

a memory layout with the same characteristics as this layout, but with no name

See Also:

• MemoryLayout.name()

withByteAlignment

PaddingLayout withByteAlignment(long byteAlignment)

Returns a memory layout with the same characteristics as this layout, but with the given alignment constraint (in bytes).

Specified by:

withByteAlignment in interface MemoryLayout

Parameters:

byteAlignment - the layout alignment constraint, expressed in bytes

Returns:

a memory layout with the same characteristics as this layout, but with the given alignment constraint (in bytes)

Throws:

IllegalArgumentException - if byteAlignment is not a power of two