[−][src]Struct futures_util::lock::MutexGuard
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: ?Sized> MutexGuard<'a, T>
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pub fn map<U: ?Sized, F>(this: Self, f: F) -> MappedMutexGuard<'a, T, U> where
F: FnOnce(&mut T) -> &mut U,
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F: FnOnce(&mut T) -> &mut U,
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: ?Sized + Debug, '_> Debug for MutexGuard<'_, T>
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impl<T: ?Sized, '_> Deref for MutexGuard<'_, T>
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impl<T: ?Sized, '_> DerefMut for MutexGuard<'_, T>
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impl<T: ?Sized, '_> Drop for MutexGuard<'_, T>
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impl<T: ?Sized + Send, '_> Send for MutexGuard<'_, T>
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impl<T: ?Sized + Sync, '_> Sync for MutexGuard<'_, T>
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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> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut Tⓘ
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,