InterruptGuard

os::test

Struct InterruptGuard 

Source 
pub struct InterruptGuard {
    was_enabled: bool,
}
Expand description

一个 RAII 守卫，用于在作用域内启用中断，并在离开作用域时恢复之前的状态。

§Safety

创建此守卫需要调用 enable_interrupts，这是一个 unsafe 操作。 因此，new 函数也是 unsafe 的。封装它的宏将负责处理安全性。

Fields§

§was_enabled: bool

Implementations§

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impl InterruptGuard

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pub fn new() -> Self

创建一个新的守卫并启用中断。

§Safety

调用者必须确保此时启用中断是安全的。例如，不能在持有自旋锁时调用。

Trait Implementations§

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impl Drop for InterruptGuard

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl Freeze for InterruptGuard

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impl RefUnwindSafe for InterruptGuard

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impl Send for InterruptGuard

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impl Sync for InterruptGuard

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impl Unpin for InterruptGuard

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impl UnwindSafe for InterruptGuard

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.