Struct holochain::prelude::kitsune_p2p::dependencies::kitsune_p2p_types::dependencies::lair_keystore_api::dependencies::tokio::sync::OwnedMappedMutexGuard
source · pub struct OwnedMappedMutexGuard<T, U = T>where
T: ?Sized,
U: ?Sized,{ /* private fields */ }
Expand description
A owned handle to a held Mutex
that has had a function applied to it via
OwnedMutexGuard::map
.
This can be used to hold a subfield of the protected data.
Implementations§
source§impl<T, U> OwnedMappedMutexGuard<T, U>where
T: ?Sized,
U: ?Sized,
impl<T, U> OwnedMappedMutexGuard<T, U>where T: ?Sized, U: ?Sized,
sourcepub fn map<S, F>(
this: OwnedMappedMutexGuard<T, U>,
f: F
) -> OwnedMappedMutexGuard<T, S>where
F: FnOnce(&mut U) -> &mut S,
pub fn map<S, F>( this: OwnedMappedMutexGuard<T, U>, f: F ) -> OwnedMappedMutexGuard<T, S>where F: FnOnce(&mut U) -> &mut S,
Makes a new OwnedMappedMutexGuard
for a component of the locked data.
This operation cannot fail as the OwnedMappedMutexGuard
passed in already locked the mutex.
This is an associated function that needs to be used as OwnedMappedMutexGuard::map(...)
. A method
would interfere with methods of the same name on the contents of the locked data.
sourcepub fn try_map<S, F>(
this: OwnedMappedMutexGuard<T, U>,
f: F
) -> Result<OwnedMappedMutexGuard<T, S>, OwnedMappedMutexGuard<T, U>>where
F: FnOnce(&mut U) -> Option<&mut S>,
pub fn try_map<S, F>( this: OwnedMappedMutexGuard<T, U>, f: F ) -> Result<OwnedMappedMutexGuard<T, S>, OwnedMappedMutexGuard<T, U>>where F: FnOnce(&mut U) -> Option<&mut S>,
Attempts to make a new OwnedMappedMutexGuard
for a component of the locked data. The
original guard is returned if the closure returns None
.
This operation cannot fail as the OwnedMutexGuard
passed in already locked the mutex.
This is an associated function that needs to be used as OwnedMutexGuard::try_map(...)
. A
method would interfere with methods of the same name on the contents of the locked data.
Trait Implementations§
impl<T, U> Send for OwnedMappedMutexGuard<T, U>where T: Send + ?Sized, U: Send + ?Sized,
impl<T, U> Sync for OwnedMappedMutexGuard<T, U>where T: Send + Sync + ?Sized, U: Send + Sync + ?Sized,
Auto Trait Implementations§
impl<T, U = T> !RefUnwindSafe for OwnedMappedMutexGuard<T, U>
impl<T: ?Sized, U: ?Sized> Unpin for OwnedMappedMutexGuard<T, U>
impl<T, U = T> !UnwindSafe for OwnedMappedMutexGuard<T, U>
Blanket Implementations§
§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
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type ArchivedMetadata = ()
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_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
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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
§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>
§impl<T> FutureExt for T
impl<T> FutureExt for T
§fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
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§fn with_current_context(self) -> WithContext<Self> ⓘ
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source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
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source§fn in_current_span(self) -> Instrumented<Self> ⓘ
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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>
self
from the equivalent element of its
superset. Read more§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
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
self.to_subset
but without any property checks. Always succeeds.§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
self
to the equivalent element of its superset.