Struct css::servo_arc::NonZeroPtrMut

pub struct NonZeroPtrMut<T: ?Sized + 'static>(_);

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.

[1] https://github.com/rust-lang/rust/issues/27730

Methods

impl<T: ?Sized> NonZeroPtrMut<T>

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

fn ptr(&self) -> *mut T

Trait Implementations

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

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

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

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

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

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

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

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

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

impl<T: Sized + 'static> Hash for NonZeroPtrMut<T>

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

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].