Struct user_stable_vtable::ptr::StablePtr

#[repr(C)]pub struct StablePtr<Trait: StableVTableTrait + ?Sized> {
    pub data: *mut (),
    pub vtable: *const Trait::VTable,
}

A type-erased pointer with stable layout to a trait object This pointer has the same layout as *mut dyn Trait for #[stable_vtable] traits as with [RFC 2955]

Fields

data: *mut ()

vtable: *const Trait::VTable

Implementations

impl<Trait: StableVTableTrait + ?Sized> StablePtr<Trait>

pub fn is_null(self) -> bool

Trait Implementations

impl<Trait: StableVTableTrait + ?Sized> Clone for StablePtr<Trait>

pub fn clone(&self) -> Self

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<Trait: StableVTableTrait + ?Sized> Copy for StablePtr<Trait>

impl<Trait: StableVTableTrait + ?Sized> From<*const Trait> for StablePtr<Trait> where
    Trait: StablePointerCast<StablePtr<Trait>>, 

pub fn from(ptr: *const Trait) -> Self

Performs the conversion.

impl<Trait: StableVTableTrait + ?Sized> From<*mut Trait> for StablePtr<Trait> where
    Trait: StablePointerCast<StablePtr<Trait>>, 

pub fn from(ptr: *mut Trait) -> Self

Performs the conversion.

impl<Trait: StableVTableTrait + ?Sized> From<StableNonNull<Trait>> for StablePtr<Trait>

pub fn from(ptr: StableNonNull<Trait>) -> Self

Performs the conversion.

impl<Trait: StableVTableTrait + ?Sized> StablePointer<Trait> for StablePtr<Trait>

pub unsafe fn size_of_val(self) -> usize

Retrieves the alignment of the value from the underlying object unsafe because there are currently no limitations on the validity of vtables for non-reference pointers This shall return the value of the vtables size field

pub unsafe fn align_of_val(self) -> usize

Retrieves the alignment of the value from the underlying object unsafe because there are currently no limitations on the validity of vtables for non-reference pointers This shall return the value of the vtables size field

pub unsafe fn drop_in_place(self)

Executes the destructor operation on the value The pointed-to value may not be further used, even if the destructor operation is trivial.

pub unsafe fn dealloc(self)

Deallocates the pointed to value. The pointer may not be futher used, even if the destructor operation is trivial.

pub unsafe fn deref<'a>(self) -> Self::Reference where
    Trait: 'a, 

Dereferences the pointer All requirements of the equivalent reference from rust shall be upheld or the behaviour is undefined. This operation shall be equivalent to a transmute.

pub unsafe fn deref_mut<'a>(self) -> Self::MutReference where
    Trait: 'a, 

Dereferences the pointer All requirements of the equivalent reference from rust shall be upheld or the behaviour is undefined. This operation shall be equivalent to a transmute.

pub unsafe fn into_other<P: StablePointer<Trait>>(self) -> P

Converts between different StablePointer types.

impl<'a, Trait: StableVTableTrait + ?Sized> StablePointerLifetime<'a, Trait> for StablePtr<Trait>

type Reference = StableRef<'a, Trait>

type MutReference = StableMut<'a, Trait>