stdx.allocator.building_blocks.null_allocator

  • NullAllocator

    Declaration

    struct NullAllocator;

    is an emphatically empty implementation of the allocator interface. Although it has no direct use, it is useful as a "terminator" in composite allocators.

    • alignment

      Declaration

      enum uint alignment;

      advertises a relatively large alignment equal to 64 KB. This is because never actually needs to honor this alignment and because composite allocators using shouldn't be unnecessarily constrained.

    • allocate

      Declaration

      shared void[] allocate(size_t);

      Always returns .

    • alignedAllocate

      Declaration

      shared void[] alignedAllocate(size_t, uint);

      Always returns .

    • allocateAll

      Declaration

      shared void[] allocateAll();

      Always returns .

    • expand

      Declaration

      shared bool expand(ref void[] b, size_t s);
      shared bool reallocate(ref void[] b, size_t);
      shared bool alignedReallocate(ref void[] b, size_t, uint);

      These methods return .

      Precondition: . This is because there is no other possible legitimate input.

    • owns

      Declaration

      shared const Ternary owns(void[]);

      Returns .

    • resolveInternalPointer

      Declaration

      shared const Ternary resolveInternalPointer(const void*, ref void[]);

      Returns .

    • deallocate

      Declaration

      shared bool deallocate(void[] b);

      No-op.

      Precondition:

    • deallocateAll

      Declaration

      shared bool deallocateAll();

      No-op.

    • empty

      Declaration

      shared const Ternary empty();

      Returns .

    • instance

      Declaration

      static shared NullAllocator instance;

      Returns the global instance of the .