Record Class VmaAllocation

java.lang.Object
java.lang.Record
club.doki7.vma.handle.VmaAllocation
All Implemented Interfaces:
IPointer
@ValueBasedCandidate @UnsafeConstructor public record VmaAllocation(@NotNull MemorySegment segment) extends Record implements IPointer

Represents single memory allocation.

It may be either dedicated block of VkDeviceMemory or a specific region of a bigger block of this type plus unique offset.

There are multiple ways to create such object. You need to fill structure VmaAllocationCreateInfo. For more information see [Choosing memory type](@ref choosing_memory_type).

Although the library provides convenience functions that create Vulkan buffer or image, allocate memory for it and bind them together, binding of the allocation to a buffer or an image is out of scope of the allocation itself. Allocation object can exist without buffer/image bound, binding can be done manually by the user, and destruction of it can be done independently of destruction of the allocation.

The object also remembers its size and some other information. To retrieve this information, use function vmaGetAllocationInfo() and inspect returned structure VmaAllocationInfo.

Contracts

The property segment() should always be not-null (segment != NULL && !segment.equals(MemorySegment.NULL)), and properly aligned to MemoryLayout.byteAlignment() bytes. To represent null pointer, you may use a Java null instead. See the documentation of IPointer.segment() for more details.

The constructor of this class is marked as UnsafeConstructor, because it does not perform any runtime check. The constructor can be useful for automatic code generators.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static final record 
    VmaAllocation.Ptr
    Represents a pointer to VmaAllocation handle(s) in native memory.

  • Constructor Summary

    Constructors
    Constructor
    Description
    VmaAllocation(@NotNull MemorySegment segment)
    Creates an instance of a VmaAllocation record class.

  • Method Summary

    Modifier and Type
    Method
    Description
    final boolean
    equals(Object o)
    Indicates whether some other object is "equal to" this one.
    final int
    hashCode()
    Returns a hash code value for this object.
    @NotNull MemorySegment
    segment()
    Returns the value of the segment record component.
    final String
    toString()
    Returns a string representation of this record class.

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Constructor Details

    • VmaAllocation

      public VmaAllocation(@NotNull @NotNull MemorySegment segment)
      Creates an instance of a VmaAllocation record class.
      Parameters:
      segment - the value for the segment record component

  • Method Details

    • toString

      public final String toString()
      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.
      Specified by:
      toString in class Record
      Returns:
      a string representation of this object

    • hashCode

      public final int hashCode()
      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.
      Specified by:
      hashCode in class Record
      Returns:
      a hash code value for this object

    • equals

      public final boolean equals(Object o)
      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).
      Specified by:
      equals in class Record
      Parameters:
      o - the object with which to compare
      Returns:
      true if this object is the same as the o argument; false otherwise.

    • segment

      @NotNull public @NotNull MemorySegment segment()
      Returns the value of the segment record component.
      Specified by:
      segment in interface IPointer
      Returns:
      the value of the segment record component