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/OpenJDK 25

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 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 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:

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:

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

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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/foreign/PaddingLayout.html