Struct holochain::prelude::dependencies::kitsune_p2p_types::dependencies::futures::lock::Mutex
source · pub struct Mutex<T>where
T: ?Sized,{ /* private fields */ }
Expand description
A futures-aware mutex.
§Fairness
This mutex provides no fairness guarantees. Tasks may not acquire the mutex in the order that they requested the lock, and it’s possible for a single task which repeatedly takes the lock to starve other tasks, which may be left waiting indefinitely.
Implementations§
source§impl<T> Mutex<T>where
T: ?Sized,
impl<T> Mutex<T>where
T: ?Sized,
sourcepub fn try_lock(&self) -> Option<MutexGuard<'_, T>>
pub fn try_lock(&self) -> Option<MutexGuard<'_, T>>
Attempt to acquire the lock immediately.
If the lock is currently held, this will return None
.
sourcepub fn try_lock_owned(self: &Arc<Mutex<T>>) -> Option<OwnedMutexGuard<T>>
pub fn try_lock_owned(self: &Arc<Mutex<T>>) -> Option<OwnedMutexGuard<T>>
Attempt to acquire the lock immediately.
If the lock is currently held, this will return None
.
sourcepub fn lock(&self) -> MutexLockFuture<'_, T> ⓘ
pub fn lock(&self) -> MutexLockFuture<'_, T> ⓘ
Acquire the lock asynchronously.
This method returns a future that will resolve once the lock has been successfully acquired.
sourcepub fn lock_owned(self: Arc<Mutex<T>>) -> OwnedMutexLockFuture<T> ⓘ
pub fn lock_owned(self: Arc<Mutex<T>>) -> OwnedMutexLockFuture<T> ⓘ
Acquire the lock asynchronously.
This method returns a future that will resolve once the lock has been successfully acquired.
sourcepub fn get_mut(&mut self) -> &mut T
pub fn get_mut(&mut self) -> &mut T
Returns a mutable reference to the underlying data.
Since this call borrows the Mutex
mutably, no actual locking needs to
take place – the mutable borrow statically guarantees no locks exist.
§Examples
use futures::lock::Mutex;
let mut mutex = Mutex::new(0);
*mutex.get_mut() = 10;
assert_eq!(*mutex.lock().await, 10);
Trait Implementations§
impl<T> Send for Mutex<T>
impl<T> Sync for Mutex<T>
Auto Trait Implementations§
impl<T> !RefUnwindSafe for Mutex<T>
impl<T: ?Sized> Unpin for Mutex<T>where
T: Unpin,
impl<T: ?Sized> UnwindSafe for Mutex<T>where
T: UnwindSafe,
Blanket Implementations§
source§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
§type ArchivedMetadata = ()
type ArchivedMetadata = ()
source§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata ) -> <T as Pointee>::Metadata
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
source§impl<F, W, T, D> Deserialize<With<T, W>, D> for F
impl<F, W, T, D> Deserialize<With<T, W>, D> for F
source§impl<T> FromFd for T
impl<T> FromFd for T
source§impl<T> FromFilelike for T
impl<T> FromFilelike for T
source§fn from_filelike(owned: OwnedFd) -> T
fn from_filelike(owned: OwnedFd) -> T
Self
from the given filelike object. Read moresource§fn from_into_filelike<Owned>(owned: Owned) -> Twhere
Owned: IntoFilelike,
fn from_into_filelike<Owned>(owned: Owned) -> Twhere
Owned: IntoFilelike,
Self
from the given filelike object
converted from into_owned
. Read moresource§impl<T> FromSocketlike for T
impl<T> FromSocketlike for T
source§fn from_socketlike(owned: OwnedFd) -> T
fn from_socketlike(owned: OwnedFd) -> T
Self
from the given socketlike object.source§fn from_into_socketlike<Owned>(owned: Owned) -> Twhere
Owned: IntoSocketlike,
fn from_into_socketlike<Owned>(owned: Owned) -> Twhere
Owned: IntoSocketlike,
Self
from the given socketlike object
converted from into_owned
.source§impl<T> FutureExt for T
impl<T> FutureExt for T
source§fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
source§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> ⓘ
source§impl<T> LayoutRaw for T
impl<T> LayoutRaw for T
source§fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
source§impl<T> Pointable for T
impl<T> Pointable for T
source§impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
source§fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
self
from the equivalent element of its
superset. Read moresource§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).source§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
self.to_subset
but without any property checks. Always succeeds.source§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
self
to the equivalent element of its superset.