Struct WeakSlice

#[repr(C)]
pub struct WeakSlice<T, Alloc: IAlloc = DefaultAllocator> { /* private fields */ }

A weak reference counted slice.

Implementations

impl<T, Alloc: IAlloc> WeakSlice<T, Alloc>

where Struct<AllocSlice<T, Alloc>>: IStable, AllocSlice<T, Alloc>: IStable,

pub const fn has_optimal_layout() -> bool

Returns true if the layout for WeakSlice is smaller or equal to that Rust would have generated for it.

impl<T, Alloc: IAlloc> WeakSlice<T, Alloc>

pub fn upgrade(&self) -> Option<ArcSlice<T, Alloc>>

Return a strong reference to the slice if it hasn’t been destroyed yet.

pub fn force_upgrade(&self) -> ArcSlice<T, Alloc>

where T: Copy,

For types that are Copy, the slice actually remains valid even after all strong references have been dropped as long as at least a weak reference lives on.

If you’re using this, there are probably design issues in your program…

Trait Implementations

impl<T, Alloc: IAlloc> Clone for WeakSlice<T, Alloc>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T, Alloc: IAlloc> Drop for WeakSlice<T, Alloc>

fn drop(&mut self)

Executes the destructor for this type.

impl<T, Alloc: IAlloc> From<&ArcSlice<T, Alloc>> for WeakSlice<T, Alloc>

fn from(value: &ArcSlice<T, Alloc>) -> Self

Converts to this type from the input type.

impl<T, Alloc: IAlloc> From<&WeakSlice<T, Alloc>> for WeakSlice<T, Alloc>

fn from(value: &WeakSlice<T, Alloc>) -> Self

Converts to this type from the input type.

impl<T, Alloc: IAlloc> IStable for WeakSlice<T, Alloc>

where Struct<AllocSlice<T, Alloc>>: IStable, AllocSlice<T, Alloc>: IStable,

const REPORT: &'static TypeReport

A compile-time generated report of the fields of the type, allowing for compatibility inspection.

const ID: u64

A stable (and ideally unique) identifier for the type. Often generated using crate::report::gen_id, but can be manually set.

type ForbiddenValues = <Struct<AllocSlice<T, Alloc>> as IStable>::ForbiddenValues

The values that the annotated type cannot occupy.

type UnusedBits = <Struct<AllocSlice<T, Alloc>> as IStable>::UnusedBits

The padding bits in the annotated types

type Size = <Struct<AllocSlice<T, Alloc>> as IStable>::Size

The size of the annotated type in bytes.

type Align = <Struct<AllocSlice<T, Alloc>> as IStable>::Align

The alignment of the annotated type in bytes.

type HasExactlyOneNiche = <Struct<AllocSlice<T, Alloc>> as IStable>::HasExactlyOneNiche

Allows the detection of whether or not core::option::Options are stable:

type ContainsIndirections = <Struct<AllocSlice<T, Alloc>> as IStable>::ContainsIndirections

Whether or not the type contains indirections (pointers, indices in independent data-structures…)

fn size() -> usize

Returns the size of the type.

fn align() -> usize

Returns the alignment of the type.

unsafe fn is_invalid(ptr: *const u8) -> bool

Returns true if ptr points to memory that cannot be a valid value of Self.

impl<T: Send + Sync, Alloc: IAlloc + Send + Sync> Send for WeakSlice<T, Alloc>

impl<T: Send + Sync, Alloc: IAlloc + Send + Sync> Sync for WeakSlice<T, Alloc>