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AsyncRwLockWriteWeakGuard

cocoon_tpm_utils_async::asynchronous

Struct AsyncRwLockWriteWeakGuard 

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pub struct AsyncRwLockWriteWeakGuard<ST: SyncTypes, T: Send + Sync, LP: SyncRcPtr<AsyncRwLock<ST, T>>> { /* private fields */ }
Expand description

Weak variant of AsyncRwLockWriteGuard not hindering destruction of the associated AsyncRwLock.

In cases were it’s desired that long-living locking grants don’t prevent a destruction of the associated AsyncRwLock, or to break cycles, a AsyncRwLockWriteWeakGuard may be used. To be obtained via AsyncRwLockWriteGuard::into_weak().

An AsyncRwLockWriteWeakGuard may get converted back into a full AsyncRwLockWriteGuard via upgrade().

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impl<ST: SyncTypes, T: Send + Sync, LP: SyncRcPtr<AsyncRwLock<ST, T>>> AsyncRwLockWriteWeakGuard<ST, T, LP>

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pub fn upgrade(self) -> Option<AsyncRwLockWriteGuard<ST, T, LP>>

Attempt to convert back into an AsyncRwLockWriteGuard.

Returns the AsyncRwLockWriteGuard wrapped in Some if the associated AsyncRwLock is still alive, `None otherwise.

Auto Trait Implementations§

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impl<ST, T, LP> Freeze for AsyncRwLockWriteWeakGuard<ST, T, LP>
where AsyncSemaphoreExclusiveAllWeakGuard<ST, T, SyncRcPtrForInner<AsyncRwLock<ST, T>, LP, AsyncRwLockIndexInnerSemTag>>: Freeze,

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impl<ST, T, LP> RefUnwindSafe for AsyncRwLockWriteWeakGuard<ST, T, LP>
where AsyncSemaphoreExclusiveAllWeakGuard<ST, T, SyncRcPtrForInner<AsyncRwLock<ST, T>, LP, AsyncRwLockIndexInnerSemTag>>: RefUnwindSafe,

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impl<ST, T, LP> Send for AsyncRwLockWriteWeakGuard<ST, T, LP>
where AsyncSemaphoreExclusiveAllWeakGuard<ST, T, SyncRcPtrForInner<AsyncRwLock<ST, T>, LP, AsyncRwLockIndexInnerSemTag>>: Send,

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impl<ST, T, LP> Sync for AsyncRwLockWriteWeakGuard<ST, T, LP>
where AsyncSemaphoreExclusiveAllWeakGuard<ST, T, SyncRcPtrForInner<AsyncRwLock<ST, T>, LP, AsyncRwLockIndexInnerSemTag>>: Sync,

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impl<ST, T, LP> Unpin for AsyncRwLockWriteWeakGuard<ST, T, LP>
where AsyncSemaphoreExclusiveAllWeakGuard<ST, T, SyncRcPtrForInner<AsyncRwLock<ST, T>, LP, AsyncRwLockIndexInnerSemTag>>: Unpin,

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impl<ST, T, LP> UnsafeUnpin for AsyncRwLockWriteWeakGuard<ST, T, LP>
where AsyncSemaphoreExclusiveAllWeakGuard<ST, T, SyncRcPtrForInner<AsyncRwLock<ST, T>, LP, AsyncRwLockIndexInnerSemTag>>: UnsafeUnpin,

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impl<ST, T, LP> UnwindSafe for AsyncRwLockWriteWeakGuard<ST, T, LP>
where AsyncSemaphoreExclusiveAllWeakGuard<ST, T, SyncRcPtrForInner<AsyncRwLock<ST, T>, LP, AsyncRwLockIndexInnerSemTag>>: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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impl<T, U> TryFrom<U> for T
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type Error = !

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Performs the conversion.
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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.