Struct parking_lot::ArcRwLockWriteGuard

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pub struct ArcRwLockWriteGuard<R, T>
where R: RawRwLock, T: ?Sized,
{ /* private fields */ }
Expand description

An RAII rwlock guard returned by the Arc locking operations on RwLock. This is similar to the RwLockWriteGuard struct, except instead of using a reference to unlock the RwLock it uses an Arc<RwLock>. This has several advantages, most notably that it has an 'static lifetime.

Implementations§

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impl<R, T> ArcRwLockWriteGuard<R, T>
where R: RawRwLock, T: ?Sized,

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pub fn rwlock(s: &ArcRwLockWriteGuard<R, T>) -> &Arc<RwLock<R, T>>

Returns a reference to the rwlock, contained in its Arc.

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pub fn unlocked<F, U>(s: &mut ArcRwLockWriteGuard<R, T>, f: F) -> U
where F: FnOnce() -> U,

Temporarily unlocks the RwLock to execute the given function.

This is functionally equivalent to the unlocked method on RwLockWriteGuard.

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impl<R, T> ArcRwLockWriteGuard<R, T>
where R: RawRwLockDowngrade, T: ?Sized,

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pub fn downgrade(s: ArcRwLockWriteGuard<R, T>) -> ArcRwLockReadGuard<R, T>

Atomically downgrades a write lock into a read lock without allowing any writers to take exclusive access of the lock in the meantime.

This is functionally equivalent to the downgrade method on RwLockWriteGuard.

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impl<R, T> ArcRwLockWriteGuard<R, T>

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pub fn downgrade_to_upgradable( s: ArcRwLockWriteGuard<R, T> ) -> ArcRwLockUpgradableReadGuard<R, T>

Atomically downgrades a write lock into an upgradable read lock without allowing any writers to take exclusive access of the lock in the meantime.

This is functionally identical to the downgrade_to_upgradable method on RwLockWriteGuard.

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impl<R, T> ArcRwLockWriteGuard<R, T>
where R: RawRwLockFair, T: ?Sized,

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pub fn unlock_fair(s: ArcRwLockWriteGuard<R, T>)

Unlocks the RwLock using a fair unlock protocol.

This is functionally equivalent to the unlock_fair method on RwLockWriteGuard.

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pub fn unlocked_fair<F, U>(s: &mut ArcRwLockWriteGuard<R, T>, f: F) -> U
where F: FnOnce() -> U,

Temporarily unlocks the RwLock to execute the given function.

This is functionally equivalent to the unlocked_fair method on RwLockWriteGuard.

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pub fn bump(s: &mut ArcRwLockWriteGuard<R, T>)

Temporarily yields the RwLock to a waiting thread if there is one.

This method is functionally equivalent to the bump method on RwLockWriteGuard.

Trait Implementations§

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impl<R, T> Debug for ArcRwLockWriteGuard<R, T>
where R: RawRwLock, T: Debug + ?Sized,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<R, T> Deref for ArcRwLockWriteGuard<R, T>
where R: RawRwLock, T: ?Sized,

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &T

Dereferences the value.
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impl<R, T> DerefMut for ArcRwLockWriteGuard<R, T>
where R: RawRwLock, T: ?Sized,

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fn deref_mut(&mut self) -> &mut T

Mutably dereferences the value.
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impl<R, T> Display for ArcRwLockWriteGuard<R, T>
where R: RawRwLock, T: Display + ?Sized,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<R, T> Drop for ArcRwLockWriteGuard<R, T>
where R: RawRwLock, T: ?Sized,

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<R, T> Freeze for ArcRwLockWriteGuard<R, T>
where T: ?Sized,

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impl<R, T> !RefUnwindSafe for ArcRwLockWriteGuard<R, T>

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impl<R, T> Send for ArcRwLockWriteGuard<R, T>
where <R as RawRwLock>::GuardMarker: Send, R: Sync + Send, T: Send + Sync + ?Sized,

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impl<R, T> Sync for ArcRwLockWriteGuard<R, T>
where <R as RawRwLock>::GuardMarker: Sync, R: Sync + Send, T: Send + Sync + ?Sized,

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impl<R, T> Unpin for ArcRwLockWriteGuard<R, T>
where <R as RawRwLock>::GuardMarker: Unpin, T: ?Sized,

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impl<R, T> !UnwindSafe for ArcRwLockWriteGuard<R, T>

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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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.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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

Performs the conversion.