Struct os::sync::up::UPSafeCell

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pub struct UPSafeCell<T> {
    inner: RefCell<T>,
}
Expand description

Wrap a static data structure inside it so that we are able to access it without any unsafe.

We should only use it in uniprocessor.

In order to get mutable reference of inner data, call exclusive_access.

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§inner: RefCell<T>

inner data

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impl<T> UPSafeCell<T>

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pub unsafe fn new(value: T) -> Self

User is responsible to guarantee that inner struct is only used in uniprocessor.

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pub fn exclusive_access(&self) -> RefMut<'_, T>

Exclusive access inner data in UPSafeCell. Panic if the data has been borrowed.

Trait Implementations§

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impl<T> Sync for UPSafeCell<T>

Auto Trait Implementations§

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impl<T> !RefUnwindSafe for UPSafeCell<T>

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impl<T> Send for UPSafeCell<T>
where T: Send,

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impl<T> Unpin for UPSafeCell<T>
where T: Unpin,

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impl<T> UnwindSafe for UPSafeCell<T>
where T: UnwindSafe,

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.