RwLockUpgradeableGuard

ostd::sync

Struct RwLockUpgradeableGuard 

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pub struct RwLockUpgradeableGuard<'a, T, G: SpinGuardian> { /* private fields */ }
Expand description

A guard that provides immutable data access but can be atomically upgraded to RwLockWriteGuard.

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impl<'a, T, G: SpinGuardian> RwLockUpgradeableGuard<'a, T, G>

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pub closed spec fn type_inv(self) -> bool

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pub closed spec fn value(self) -> T

The value stored in the lock.

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pub open spec fn view(self) -> T

{ self.value() }

The value stored in the lock. It is an alias of Self::value.

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impl<'a, T, G: SpinGuardian> RwLockUpgradeableGuard<'a, T, G>

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pub exec fn upgrade(self) -> RwLockWriteGuard<'a, T, G>

Upgrades this upread guard to a write guard atomically.

After calling this method, subsequent readers will be blocked while previous readers remain unaffected. The calling thread will spin-wait until previous readers finish.

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impl<T, G: SpinGuardian> RwLockUpgradeableGuard<'_, T, G>

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pub exec fn drop(self)

VERUS LIMITATION: We implement drop and call it manually because Verus’s support for Drop is incomplete for now.

Trait Implementations§

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impl<T, G: SpinGuardian> Deref for RwLockUpgradeableGuard<'_, T, G>

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exec fn deref(&self) -> &T

returns
self.view(),
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type Target = T

The resulting type after dereferencing.
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impl<T, G: SpinGuardian> !Send for RwLockUpgradeableGuard<'_, T, G>

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impl<T: Sync, G: SpinGuardian> Sync for RwLockUpgradeableGuard<'_, T, G>

Auto Trait Implementations§

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impl<'a, T, G> Freeze for RwLockUpgradeableGuard<'a, T, G>
where <G as SpinGuardian>::Guard: Freeze,

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impl<'a, T, G> !RefUnwindSafe for RwLockUpgradeableGuard<'a, T, G>

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impl<'a, T, G> Unpin for RwLockUpgradeableGuard<'a, T, G>
where <G as SpinGuardian>::Guard: Unpin, T: Unpin,

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impl<'a, T, G> !UnwindSafe for RwLockUpgradeableGuard<'a, T, G>

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> DerefSpec for T
where T: Deref,

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fn deref_spec(&self) -> &<T as Deref>::Target

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fn deref_spec_eq(&self)

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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, VERUS_SPEC__A> FromSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: From<T>,

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fn obeys_from_spec() -> bool

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fn from_spec(v: T) -> VERUS_SPEC__A

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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, VERUS_SPEC__A> IntoSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: Into<T>,

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fn obeys_into_spec() -> bool

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fn into_spec(self) -> T

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

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fn obeys_into_spec() -> bool

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fn into_spec(self) -> U

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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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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, VERUS_SPEC__A> TryFromSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: TryFrom<T>,

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fn obeys_try_from_spec() -> bool

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fn try_from_spec( v: T, ) -> Result<VERUS_SPEC__A, <VERUS_SPEC__A as TryFrom<T>>::Error>

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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.
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impl<T, VERUS_SPEC__A> TryIntoSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: TryInto<T>,

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fn obeys_try_into_spec() -> bool

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fn try_into_spec(self) -> Result<T, <VERUS_SPEC__A as TryInto<T>>::Error>

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impl<T, U> TryIntoSpecImpl<U> for T
where U: TryFrom<T>,

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fn obeys_try_into_spec() -> bool

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