Struct holochain::prelude::kitsune_p2p::dependencies::kitsune_p2p_types::dependencies::lair_keystore_api::dependencies::tokio::sync::OwnedMutexGuard
source · pub struct OwnedMutexGuard<T>where
T: ?Sized,{ /* private fields */ }
Expand description
An owned handle to a held Mutex
.
This guard is only available from a Mutex
that is wrapped in an Arc
. It
is identical to MutexGuard
, except that rather than borrowing the Mutex
,
it clones the Arc
, incrementing the reference count. This means that
unlike MutexGuard
, it will have the 'static
lifetime.
As long as you have this guard, you have exclusive access to the underlying
T
. The guard internally keeps a reference-counted pointer to the original
Mutex
, so even if the lock goes away, the guard remains valid.
The lock is automatically released whenever the guard is dropped, at which
point lock
will succeed yet again.
Implementations
sourceimpl<T> OwnedMutexGuard<T>where
T: ?Sized,
impl<T> OwnedMutexGuard<T>where
T: ?Sized,
sourcepub fn mutex(this: &OwnedMutexGuard<T>) -> &Arc<Mutex<T>>
pub fn mutex(this: &OwnedMutexGuard<T>) -> &Arc<Mutex<T>>
Returns a reference to the original Arc<Mutex>
.
use std::sync::Arc;
use tokio::sync::{Mutex, OwnedMutexGuard};
async fn unlock_and_relock(guard: OwnedMutexGuard<u32>) -> OwnedMutexGuard<u32> {
println!("1. contains: {:?}", *guard);
let mutex: Arc<Mutex<u32>> = OwnedMutexGuard::mutex(&guard).clone();
drop(guard);
let guard = mutex.lock_owned().await;
println!("2. contains: {:?}", *guard);
guard
}
Trait Implementations
sourceimpl<T> Debug for OwnedMutexGuard<T>where
T: Debug + ?Sized,
impl<T> Debug for OwnedMutexGuard<T>where
T: Debug + ?Sized,
sourceimpl<T> Deref for OwnedMutexGuard<T>where
T: ?Sized,
impl<T> Deref for OwnedMutexGuard<T>where
T: ?Sized,
sourceimpl<T> DerefMut for OwnedMutexGuard<T>where
T: ?Sized,
impl<T> DerefMut for OwnedMutexGuard<T>where
T: ?Sized,
sourcefn deref_mut(&mut self) -> &mut <OwnedMutexGuard<T> as Deref>::Target
fn deref_mut(&mut self) -> &mut <OwnedMutexGuard<T> as Deref>::Target
Mutably dereferences the value.
sourceimpl<T> Display for OwnedMutexGuard<T>where
T: Display + ?Sized,
impl<T> Display for OwnedMutexGuard<T>where
T: Display + ?Sized,
sourceimpl<T> Drop for OwnedMutexGuard<T>where
T: ?Sized,
impl<T> Drop for OwnedMutexGuard<T>where
T: ?Sized,
impl<T> Sync for OwnedMutexGuard<T>where
T: Send + Sync + ?Sized,
Auto Trait Implementations
impl<T> !RefUnwindSafe for OwnedMutexGuard<T>
impl<T: ?Sized> Send for OwnedMutexGuard<T>where
T: Send,
impl<T: ?Sized> Unpin for OwnedMutexGuard<T>
impl<T> !UnwindSafe for OwnedMutexGuard<T>
Blanket Implementations
impl<T> Any for Twhere
T: Any + ?Sized,
impl<T> Any for Twhere
T: Any + ?Sized,
fn type_id_compat(&self) -> TypeId
fn type_id_compat(&self) -> TypeId
TODO: once 1.33.0 is the minimum supported compiler version, remove
Any::type_id_compat and use StdAny::type_id instead.
https://github.com/rust-lang/rust/issues/27745 Read more
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.
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
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
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> ⓘ
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
sourcefn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
sourcefn 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 morefn 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: 'static + Any + Send + Sync,
impl<T> Upcastable for Twhere
T: 'static + Any + Send + Sync,
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