[−][src]Struct parc::LockWeak
Weak reference to a ParentArc
.
This instance can be locked at any moment, you can try to upgrade it into a
ChildArc
which assures it can be read until the reader is dropped.
The typical way to obtain a Weak pointer is to call
ParentArc::downgrade
.
Methods
impl<T> LockWeak<T>
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pub fn upgrade(&self) -> Option<ChildArc<T>>
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Upgrades this Weak reference into a ChildArc
if the data is
unlocked or still owned by the ParentArc
.
Examples
use parc::{ParentArc, LockWeak}; use std::sync::Mutex; fn main() { let parent = ParentArc::new(Mutex::new(true)); let weak: LockWeak<_> = ParentArc::downgrade(&parent); let child = weak.upgrade().unwrap(); }
Trait Implementations
Auto Trait Implementations
impl<T> Unpin for LockWeak<T>
impl<T> !Sync for LockWeak<T>
impl<T> UnwindSafe for LockWeak<T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
impl<T> RefUnwindSafe for LockWeak<T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,