Struct spin::RwLockWriteGuard

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pub struct RwLockWriteGuard<'a, T: 'a + ?Sized> { /* private fields */ }
Expand description

A guard to which the protected data can be written

When the guard falls out of scope it will release the lock.

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impl<'rwlock, T: ?Sized> RwLockWriteGuard<'rwlock, T>

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pub fn downgrade(self) -> RwLockReadGuard<'rwlock, T>

Downgrades the writable lock guard to a readable, shared lock guard. Cannot fail and is guaranteed not to spin.

let mylock = spin::RwLock::new(0);

let mut writable = mylock.write();
*writable = 1;

let readable = writable.downgrade(); // This is guaranteed not to spin
assert_eq!(*readable, 1);

Trait Implementations§

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impl<'a, T: Debug + 'a + ?Sized> Debug for RwLockWriteGuard<'a, T>

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

Formats the value using the given formatter. Read more
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impl<'rwlock, T: ?Sized> Deref for RwLockWriteGuard<'rwlock, T>

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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<'rwlock, T: ?Sized> DerefMut for RwLockWriteGuard<'rwlock, T>

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

Mutably dereferences the value.
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impl<'rwlock, T: ?Sized> Drop for RwLockWriteGuard<'rwlock, T>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<'a, T> Freeze for RwLockWriteGuard<'a, T>
where T: ?Sized,

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impl<'a, T> RefUnwindSafe for RwLockWriteGuard<'a, T>
where T: RefUnwindSafe + ?Sized,

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impl<'a, T> !Send for RwLockWriteGuard<'a, T>

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impl<'a, T> !Sync for RwLockWriteGuard<'a, T>

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impl<'a, T> Unpin for RwLockWriteGuard<'a, T>
where T: ?Sized,

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impl<'a, T> !UnwindSafe for RwLockWriteGuard<'a, 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, 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.