Struct futures_util::lock::MutexGuard
source · pub struct MutexGuard<'a, T: ?Sized> { /* private fields */ }
Expand description
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§
source§impl<'a, T: ?Sized> MutexGuard<'a, T>
impl<'a, T: ?Sized> MutexGuard<'a, T>
sourcepub fn map<U: ?Sized, F>(this: Self, f: F) -> MappedMutexGuard<'a, T, U>
pub fn map<U: ?Sized, F>(this: Self, f: F) -> MappedMutexGuard<'a, T, 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§
source§impl<T: ?Sized> Deref for MutexGuard<'_, T>
impl<T: ?Sized> Deref for MutexGuard<'_, T>
source§impl<T: ?Sized> DerefMut for MutexGuard<'_, T>
impl<T: ?Sized> DerefMut for MutexGuard<'_, T>
source§impl<T: ?Sized> Drop for MutexGuard<'_, T>
impl<T: ?Sized> Drop for MutexGuard<'_, T>
impl<T: ?Sized + Send> Send for MutexGuard<'_, T>
impl<T: ?Sized + Sync> Sync for MutexGuard<'_, T>
Auto Trait Implementations§
impl<'a, T> Freeze for MutexGuard<'a, T>where
T: ?Sized,
impl<'a, T> !RefUnwindSafe for MutexGuard<'a, T>
impl<'a, T> Unpin for MutexGuard<'a, T>where
T: ?Sized,
impl<'a, T> !UnwindSafe for MutexGuard<'a, T>
Blanket Implementations§
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
Mutably borrows from an owned value. Read more