Struct rc_borrow::ArcBorrow

#[repr(transparent)]
pub struct ArcBorrow<'a, T: ?Sized> { /* private fields */ }

Borrowed version of Arc.

This type is guaranteed to have the same repr as &T.

Implementations

impl<'a, T: ?Sized> ArcBorrow<'a, T>

pub fn upgrade(this: Self) -> Arc<T>

Convert this borrowed pointer into an owned pointer.

pub fn to_weak(this: Self) -> Weak<T>

Convert this borrowed pointer into a weak pointer.

pub fn downgrade(this: Self) -> &'a T

Convert this borrowed pointer into a standard reference.

This gives you a long-lived reference, whereas dereferencing gives a temporary borrow.

pub fn strong_count(this: Self) -> usize

Get the number of strong owning pointers to this allocation.

pub fn weak_count(this: Self) -> usize

Get the number of weak owning pointers to this allocation.

pub fn into_raw(this: Self) -> *const T

Get a raw pointer that can be used with from_raw.

pub unsafe fn from_raw(ptr: *const T) -> Self

Construct a new ArcBorrow from a raw pointer.

The raw pointer must have been previously returned by a call to ArcBorrow<U>::into_raw or Arc<U>::as_raw where U must have the same size and alignment as T. This is trivially true if U is T. Note that if U is not T, this is a pointer cast (transmute) between the two types, and the types must be transmute-compatible.

Trait Implementations

impl<T, U: ?Sized> AsRef<U> for ArcBorrow<'_, T>where
    T: AsRef<U> + ?Sized,

fn as_ref(&self) -> &U

Converts this type into a shared reference of the (usually inferred) input type.

impl<T> Binary for ArcBorrow<'_, T>where
    T: Binary + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: ?Sized> Borrow<T> for ArcBorrow<'_, T>

fn borrow(&self) -> &T

Immutably borrows from an owned value.

impl<T: ?Sized> Clone for ArcBorrow<'_, T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for ArcBorrow<'_, T>where
    T: Debug + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: ?Sized> Deref for ArcBorrow<'_, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<T> Display for ArcBorrow<'_, T>where
    T: Display + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> ErasablePtr for ArcBorrow<'_, T>where
    T: Erasable + ?Sized,

fn erase(this: Self) -> ErasedPtr

Turn this erasable pointer into an erased pointer.

unsafe fn unerase(this: ErasedPtr) -> Self

Unerase this erased pointer.

impl<'a, T: ?Sized> From<&'a Arc<T>> for ArcBorrow<'a, T>

fn from(v: &'a Arc<T>) -> ArcBorrow<'a, T>

Converts to this type from the input type.

impl<T> Hash for ArcBorrow<'_, T>where
    T: Hash + ?Sized,

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T> LowerExp for ArcBorrow<'_, T>where
    T: LowerExp + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> LowerHex for ArcBorrow<'_, T>where
    T: LowerHex + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Octal for ArcBorrow<'_, T>where
    T: Octal + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Ord for ArcBorrow<'_, T>where
    T: Ord,

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl<T, O> PartialEq<O> for ArcBorrow<'_, T>where
    O: Deref,
    T: PartialEq<O::Target> + ?Sized,

fn eq(&self, other: &O) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T, O> PartialOrd<O> for ArcBorrow<'_, T>where
    O: Deref,
    T: PartialOrd<O::Target> + ?Sized,

fn partial_cmp(&self, other: &O) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T> Pointer for ArcBorrow<'_, T>where
    T: Pointer + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> ToSocketAddrs for ArcBorrow<'_, T>where
    T: ToSocketAddrs + ?Sized,

type Iter = <T as ToSocketAddrs>::Iter

Returned iterator over socket addresses which this type may correspond to.

fn to_socket_addrs(&self) -> Result<T::Iter>

Converts this object to an iterator of resolved SocketAddrs.

impl<T> UpperExp for ArcBorrow<'_, T>where
    T: UpperExp + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> UpperHex for ArcBorrow<'_, T>where
    T: UpperHex + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: ?Sized> Copy for ArcBorrow<'_, T>

impl<T> Eq for ArcBorrow<'_, T>where
    T: Eq + ?Sized,

impl<'a, T: ?Sized> Send for ArcBorrow<'a, T>where
    &'a Arc<T>: Send,

impl<'a, T: ?Sized> Sync for ArcBorrow<'a, T>where
    &'a Arc<T>: Sync,

impl<T: ?Sized> Unpin for ArcBorrow<'_, T>

impl<T> UnwindSafe for ArcBorrow<'_, T>where
    T: RefUnwindSafe + ?Sized,