servo_arc

Struct NonZeroPtrMut

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pub struct NonZeroPtrMut<T: ?Sized + 'static>(/* private fields */);
Expand description

Wrapper type for pointers to get the non-zero optimization. When NonZero/Shared/Unique are stabilized, we should just use Shared here to get the same effect. Gankro is working on this in 1.

It’s unfortunate that this needs to infect all the caller types with ’static. It would be nice to just use a &() and a PhantomData instead, but then the compiler can’t determine whether the &() should be thin or fat (which depends on whether or not T is sized). Given that this is all a temporary hack, this restriction is fine for now.

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impl<T: ?Sized> NonZeroPtrMut<T>

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pub fn new(ptr: *mut T) -> Self

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pub fn ptr(&self) -> *mut T

Trait Implementations§

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impl<T: ?Sized + 'static> Clone for NonZeroPtrMut<T>

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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<T: ?Sized + 'static> Debug for NonZeroPtrMut<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<T: Sized + 'static> Hash for NonZeroPtrMut<T>

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fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<T: ?Sized + 'static> PartialEq for NonZeroPtrMut<T>

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: ?Sized + 'static> Pointer for NonZeroPtrMut<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<T: ?Sized + 'static> Eq for NonZeroPtrMut<T>

Auto Trait Implementations§

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impl<T> Freeze for NonZeroPtrMut<T>
where T: ?Sized,

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impl<T> RefUnwindSafe for NonZeroPtrMut<T>
where T: RefUnwindSafe + ?Sized,

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impl<T> Send for NonZeroPtrMut<T>
where T: Send + ?Sized,

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impl<T> Sync for NonZeroPtrMut<T>
where T: Sync + ?Sized,

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impl<T> Unpin for NonZeroPtrMut<T>
where T: ?Sized,

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impl<T> !UnwindSafe for NonZeroPtrMut<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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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.