virtio_spec::volatile

Struct OveralignedVolatilePtr

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pub struct OveralignedVolatilePtr<'a, T, F, A>
where
    T: ?Sized,
    F: ?Sized,
{ /* private fields */ }
Expand description

An overaligned volatile pointer for fields that require wider access operations.

In virtio, some fields require wider access operations than their type indicate, such as for mmio::DeviceRegisters.

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impl<'a, T, F, A> OveralignedVolatilePtr<'a, T, F, A>
where T: OveralignedField<F>, F: Copy,

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pub fn new(ptr: VolatilePtr<'a, F, A>) -> Self

Creates a new overaligned volatile pointer.

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pub fn read(self) -> T
where A: Readable,

Performs a volatile read of the contained value.

See VolatilePtr::read.

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pub fn write(self, value: T)
where A: Writable,

Performs a volatile write, setting the contained value to the given value.

See VolatilePtr::write.

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pub fn update(self, f: impl FnOnce(T) -> T)
where A: Readable + Writable,

Updates the contained value using the given closure and volatile instructions.

See VolatilePtr::update.

Trait Implementations§

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impl<'a, T, F, A> Clone for OveralignedVolatilePtr<'a, T, F, A>
where T: ?Sized, F: ?Sized,

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a, T, F, A> Copy for OveralignedVolatilePtr<'a, T, F, A>
where T: ?Sized, F: ?Sized,

Auto Trait Implementations§

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impl<'a, T, F, A> Freeze for OveralignedVolatilePtr<'a, T, F, A>
where T: ?Sized, F: ?Sized,

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impl<'a, T, F, A> RefUnwindSafe for OveralignedVolatilePtr<'a, T, F, A>
where A: RefUnwindSafe, F: RefUnwindSafe + ?Sized, T: RefUnwindSafe + ?Sized,

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impl<'a, T, F, A> !Send for OveralignedVolatilePtr<'a, T, F, A>

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impl<'a, T, F, A> !Sync for OveralignedVolatilePtr<'a, T, F, A>

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impl<'a, T, F, A> Unpin for OveralignedVolatilePtr<'a, T, F, A>
where A: Unpin, T: ?Sized, F: ?Sized,

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impl<'a, T, F, A> UnwindSafe for OveralignedVolatilePtr<'a, T, F, A>
where F: RefUnwindSafe + ?Sized, A: UnwindSafe, T: RefUnwindSafe + ?Sized,

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. 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.