Struct core::ptr::Unique
[−]
[src]
pub struct Unique<T: ?Sized> {
pointer: NonZero<*const T>,
_marker: PhantomData<T>,
}A wrapper around a raw *mut T that indicates that the possessor
of this wrapper owns the referent. This in turn implies that the
Unique<T> is Send/Sync if T is Send/Sync, unlike a raw
*mut T (which conveys no particular ownership semantics). It
also implies that the referent of the pointer should not be
modified without a unique path to the Unique reference. Useful
for building abstractions like Vec<T> or Box<T>, which
internally use raw pointers to manage the memory that they own.
Fields
pointer | |
_marker |
Methods
impl<T: ?Sized> Unique<T>
const unsafe fn new(ptr: *mut T) -> Unique<T>
unique #27730)Creates a new Unique.
unsafe fn get(&self) -> &T
unique #27730)Dereferences the content.
unsafe fn get_mut(&mut self) -> &mut T
unique #27730)Mutably dereferences the content.
Trait Implementations
impl<T: Send + ?Sized> Send for Unique<T>
Unique pointers are Send if T is Send because the data they
reference is unaliased. Note that this aliasing invariant is
unenforced by the type system; the abstraction using the
Unique must enforce it.
impl<T: Sync + ?Sized> Sync for Unique<T>
Unique pointers are Sync if T is Sync because the data they
reference is unaliased. Note that this aliasing invariant is
unenforced by the type system; the abstraction using the
Unique must enforce it.