FreezeWriteGuard in rustc_data_structures::sync::freeze - Rust
Description: A guard holding mutable access to a `FreezeLock` which is in a locked state or frozen.

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## FreezeWriteGuard

# Struct FreezeWriteGuard

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    pub struct FreezeWriteGuard<'a, T: ?Sized> {
        _lock_guard: WriteGuard<'a, ()>,
        frozen: &'a AtomicBool,
        data: NonNull<T>,
        marker: PhantomData<&'a mut T>,
    }

Expand description

A guard holding mutable access to a `FreezeLock` which is in a locked state or frozen.

## Fields§

§`_lock_guard: WriteGuard<'a, ()>`§`frozen: &'a AtomicBool`§`data: NonNull<T>`§`marker: PhantomData<&'a mut T>`

## Implementations§

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### impl<'a, T> FreezeWriteGuard<'a, T>

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#### pub fn freeze(self) -> &'a T

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### impl<'a, T: ?Sized> FreezeWriteGuard<'a, T>

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#### pub fn map<U: ?Sized>( this: Self, f: impl FnOnce(&mut T) -> &mut U, ) -> FreezeWriteGuard<'a, U>

## Trait Implementations§

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### impl<'a, T: ?Sized + 'a> Deref for FreezeWriteGuard<'a, 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<'a, T: ?Sized + 'a> DerefMut for FreezeWriteGuard<'a, T>

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

Mutably dereferences the value.

## Auto Trait Implementations§

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### impl<'a, T> !DynSend for FreezeWriteGuard<'a, T>

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### impl<'a, T> !DynSync for FreezeWriteGuard<'a, T>

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### impl<'a, T> !RefUnwindSafe for FreezeWriteGuard<'a, T>

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### impl<'a, T> !Send for FreezeWriteGuard<'a, T>

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### impl<'a, T> !Sync for FreezeWriteGuard<'a, T>

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### impl<'a, T> !UnwindSafe for FreezeWriteGuard<'a, T>

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

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

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### impl<'a, T> UnsafeUnpin for FreezeWriteGuard<'a, T>
where T: ?Sized,

## Blanket Implementations§

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### impl<T> Aligned for T

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#### const ALIGN: Alignment = const ALIGN: Alignment = Alignment::of::<Self>();

Alignment of `Self`.
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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> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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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> IntoEither for T

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#### fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left` is `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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#### fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left(&self)` returns `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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### impl<T> Pointable for T

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#### const ALIGN: usize

The alignment of pointer.
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#### type Init = T

The type for initializers.
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#### unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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#### unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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#### unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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, 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> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more

## Layout§

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.