Struct holochain::prelude::kitsune_p2p::dependencies::kitsune_p2p_types::dependencies::futures::lock::MutexGuard
pub struct MutexGuard<'a, T>where
T: ?Sized,{ /* private fields */ }
Expand description
An RAII guard returned by the lock
and try_lock
methods.
When this structure is dropped (falls out of scope), the lock will be
unlocked.
Implementations§
§impl<'a, T> MutexGuard<'a, T>where
T: ?Sized,
impl<'a, T> MutexGuard<'a, T>where T: ?Sized,
pub fn map<U, F>(this: MutexGuard<'a, T>, f: F) -> MappedMutexGuard<'a, T, U>where
F: FnOnce(&mut T) -> &mut U,
U: ?Sized,
pub fn map<U, F>(this: MutexGuard<'a, T>, f: F) -> MappedMutexGuard<'a, T, U>where F: FnOnce(&mut T) -> &mut U, U: ?Sized,
Returns a locked view over a portion of the locked data.
Example
use futures::lock::{Mutex, MutexGuard};
let data = Mutex::new(Some("value".to_string()));
{
let locked_str = MutexGuard::map(data.lock().await, |opt| opt.as_mut().unwrap());
assert_eq!(&*locked_str, "value");
}
Trait Implementations§
§impl<T> Debug for MutexGuard<'_, T>where
T: Debug + ?Sized,
impl<T> Debug for MutexGuard<'_, T>where T: Debug + ?Sized,
§impl<T> Deref for MutexGuard<'_, T>where
T: ?Sized,
impl<T> Deref for MutexGuard<'_, T>where T: ?Sized,
§impl<T> DerefMut for MutexGuard<'_, T>where
T: ?Sized,
impl<T> DerefMut for MutexGuard<'_, T>where T: ?Sized,
§impl<T> Drop for MutexGuard<'_, T>where
T: ?Sized,
impl<T> Drop for MutexGuard<'_, T>where T: ?Sized,
impl<T> Send for MutexGuard<'_, T>where T: Send + ?Sized,
impl<T> Sync for MutexGuard<'_, T>where T: Sync + ?Sized,
Auto Trait Implementations§
impl<'a, T> !RefUnwindSafe for MutexGuard<'a, T>
impl<'a, T: ?Sized> Unpin for MutexGuard<'a, T>
impl<'a, T> !UnwindSafe for MutexGuard<'a, T>
Blanket Implementations§
§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere W: DeserializeWith<F, T, D>, D: Fallible + ?Sized, F: ?Sized,
§fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
fn deserialize( &self, deserializer: &mut D ) -> Result<With<T, W>, <D as Fallible>::Error>
Deserializes using the given deserializer
§impl<T> FutureExt for T
impl<T> FutureExt for T
§fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
§fn with_current_context(self) -> WithContext<Self> ⓘ
fn with_current_context(self) -> WithContext<Self> ⓘ
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
§impl<T> Pointable for T
impl<T> Pointable for T
§impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere SS: SubsetOf<SP>,
§fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
The inverse inclusion map: attempts to construct
self
from the equivalent element of its
superset. Read more§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
Checks if
self
is actually part of its subset T
(and can be converted to it).§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
Use with care! Same as
self.to_subset
but without any property checks. Always succeeds.§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
The inclusion map: converts
self
to the equivalent element of its superset.§impl<T> Upcastable for Twhere
T: Any + Send + Sync + 'static,
impl<T> Upcastable for Twhere T: Any + Send + Sync + 'static,
§fn upcast_any_ref(&self) -> &(dyn Any + 'static)
fn upcast_any_ref(&self) -> &(dyn Any + 'static)
upcast ref
§fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
upcast mut ref