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std.experimental.allocator.building_blocks.null_allocator
- struct
NullAllocator
; 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.- enum uint
alignment
; - NullAllocator advertises a relatively large alignment equal to 64 KB. This is because NullAllocator never actually needs to honor this alignment and because composite allocators using NullAllocator shouldn't be unnecessarily constrained.
- shared pure nothrow @nogc @safe void[]
allocate
(size_t); - Always returns null.
- shared pure nothrow @nogc @safe void[]
alignedAllocate
(size_t, uint); - Always returns null.
- shared pure nothrow @nogc @safe void[]
allocateAll
(); - Always returns null.
- shared pure nothrow @nogc @safe bool
expand
(ref void[]b
, size_ts
);
shared pure nothrow @nogc @safe boolreallocate
(ref void[]b
, size_t);
shared pure nothrow @nogc @safe boolalignedReallocate
(ref void[]b
, size_t, uint); - These methods return false.
Precondition b is null. This is because there is no other possible legitimate input.
- shared const pure nothrow @nogc @safe Ternary
owns
(const void[]); - Returns Ternary.no.
- shared const pure nothrow @nogc @safe Ternary
resolveInternalPointer
(const void*, ref void[]); - Returns Ternary.no.
- shared pure nothrow @nogc @safe bool
deallocate
(void[]b
); - No-op.
Precondition b is null
- shared pure nothrow @nogc @safe bool
deallocateAll
(); - No-op.
- shared const pure nothrow @nogc @safe Ternary
empty
(); - Returns Ternary.yes.
- static shared NullAllocator
instance
; - Returns the shared global instance of the NullAllocator.
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