Struct futures_util::lock::MutexGuard[][src]

pub struct MutexGuard<'a, T: ?Sized> { /* fields omitted */ }

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>[src]

pub fn map<U: ?Sized, F>(this: Self, f: F) -> MappedMutexGuard<'a, T, U> where
    F: FnOnce(&mut T) -> &mut U, 
[src]

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>[src]

impl<T: ?Sized> Deref for MutexGuard<'_, T>[src]

type Target = T

The resulting type after dereferencing.

impl<T: ?Sized> DerefMut for MutexGuard<'_, T>[src]

impl<T: ?Sized> Drop for MutexGuard<'_, T>[src]

impl<T: ?Sized + Send> Send for MutexGuard<'_, T>[src]

impl<T: ?Sized + Sync> Sync for MutexGuard<'_, T>[src]

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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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.