Struct WeakRef 

pub struct WeakRef<T>(/* private fields */);

A weak reference to a shared owned object. The upgrade method try to build a TempRef from a WeakRef and will fail if there is no OwnedRef left.

Implementations

impl<T> WeakRef<T>

pub fn new() -> Self

pub fn upgrade(&self) -> Option<TempRef<'_, T>>

Try to upgrade the WeakRef into a TempRef. This will fail as soon as the last OwnedRef is released, even if some TempRef still exist at that time. The returned TempRef must be dropped as soon as possible. In particular, it must not be kept across blocking calls.

pub fn re_own(&self) -> Option<OwnedRef<T>>

Try to upgrade the WeakRef into a OwnedRef. This will fail as soon as the last OwnedRef is released.

pub fn as_ptr(&self) -> *const T

Returns a raw pointer to the object T pointed to by this WeakRef.

See Weak::as_ptr

pub fn ptr_eq(this: &Self, other: &Self) -> bool

Returns true if the two objects point to the same allocation

Trait Implementations

impl<T> Clone for WeakRef<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for WeakRef<T>

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

Formats the value using the given formatter.

impl<T> Default for WeakRef<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> From<&OwnedRef<T>> for WeakRef<T>

fn from(owner: &OwnedRef<T>) -> Self

Converts to this type from the input type.

impl<'a, T> From<&TempRef<'a, T>> for WeakRef<T>

fn from(temp_ref: &TempRef<'a, T>) -> Self

Converts to this type from the input type.

impl<'a, T> From<TempRef<'a, T>> for WeakRef<T>

fn from(temp_ref: TempRef<'a, T>) -> Self

Converts to this type from the input type.

impl<T> From<WeakRef<T>> for WeakRefKey<T>

fn from(weak_ref: WeakRef<T>) -> Self

Converts to this type from the input type.