Struct lair_keystore::dependencies::tokio::sync::MappedMutexGuard
[−]pub struct MappedMutexGuard<'a, T> where
T: ?Sized, { /* private fields */ }
Expand description
A handle to a held Mutex
that has had a function applied to it via MutexGuard::map
.
This can be used to hold a subfield of the protected data.
Implementations
impl<'a, T> MappedMutexGuard<'a, T> where
T: ?Sized,
impl<'a, T> MappedMutexGuard<'a, T> where
T: ?Sized,
pub fn map<U, F>(this: MappedMutexGuard<'a, T>, f: F) -> MappedMutexGuard<'a, U> where
F: FnOnce(&mut T) -> &mut U,
pub fn map<U, F>(this: MappedMutexGuard<'a, T>, f: F) -> MappedMutexGuard<'a, U> where
F: FnOnce(&mut T) -> &mut U,
Makes a new MappedMutexGuard
for a component of the locked data.
This operation cannot fail as the MappedMutexGuard
passed in already locked the mutex.
This is an associated function that needs to be used as MappedMutexGuard::map(...)
. A
method would interfere with methods of the same name on the contents of the locked data.
pub fn try_map<U, F>(
this: MappedMutexGuard<'a, T>,
f: F
) -> Result<MappedMutexGuard<'a, U>, MappedMutexGuard<'a, T>> where
F: FnOnce(&mut T) -> Option<&mut U>,
pub fn try_map<U, F>(
this: MappedMutexGuard<'a, T>,
f: F
) -> Result<MappedMutexGuard<'a, U>, MappedMutexGuard<'a, T>> where
F: FnOnce(&mut T) -> Option<&mut U>,
Attempts to make a new MappedMutexGuard
for a component of the locked data. The
original guard is returned if the closure returns None
.
This operation cannot fail as the MappedMutexGuard
passed in already locked the mutex.
This is an associated function that needs to be used as MappedMutexGuard::try_map(...)
. A
method would interfere with methods of the same name on the contents of the locked data.
Trait Implementations
impl<'a, T> Debug for MappedMutexGuard<'a, T> where
T: Debug + ?Sized,
impl<'a, T> Debug for MappedMutexGuard<'a, T> where
T: Debug + ?Sized,
impl<'a, T> Deref for MappedMutexGuard<'a, T> where
T: ?Sized,
impl<'a, T> Deref for MappedMutexGuard<'a, T> where
T: ?Sized,
type Target = T
type Target = T
The resulting type after dereferencing.
fn deref(&self) -> &<MappedMutexGuard<'a, T> as Deref>::Target
fn deref(&self) -> &<MappedMutexGuard<'a, T> as Deref>::Target
Dereferences the value.
impl<'a, T> DerefMut for MappedMutexGuard<'a, T> where
T: ?Sized,
impl<'a, T> DerefMut for MappedMutexGuard<'a, T> where
T: ?Sized,
fn deref_mut(&mut self) -> &mut <MappedMutexGuard<'a, T> as Deref>::Target
fn deref_mut(&mut self) -> &mut <MappedMutexGuard<'a, T> as Deref>::Target
Mutably dereferences the value.
impl<'a, T> Display for MappedMutexGuard<'a, T> where
T: Display + ?Sized,
impl<'a, T> Display for MappedMutexGuard<'a, T> where
T: Display + ?Sized,
impl<'a, T> Drop for MappedMutexGuard<'a, T> where
T: ?Sized,
impl<'a, T> Drop for MappedMutexGuard<'a, T> where
T: ?Sized,
impl<'a, T> Send for MappedMutexGuard<'a, T> where
T: 'a + Send + ?Sized,
impl<'a, T> Sync for MappedMutexGuard<'a, T> where
T: 'a + Sync + ?Sized,
Auto Trait Implementations
impl<'a, T> !RefUnwindSafe for MappedMutexGuard<'a, T>
impl<'a, T: ?Sized> Unpin for MappedMutexGuard<'a, T>
impl<'a, T> !UnwindSafe for MappedMutexGuard<'a, T>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
sourcefn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
impl<T> Pointable for T
impl<T> Pointable for T
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
fn vzip(self) -> V
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
where
S: Into<Dispatch>,
T: Future, type Output = <T as Future>::Output;
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more