pub struct ThreadUnsafeOnceLock<T>(OnceLock<T>);Expand description
A OnceLock wrapping a type that is not considered threadsafe by the Rust compiler, but will be used in a threadsafe manner (it will not be mutated, after being initialized).
This is needed to allow using JS API types (which usually involve raw pointers) in static initializers, when Servo guarantees through the use of OnceLock that only one thread will ever initialize the value.
Tuple Fields§
§0: OnceLock<T>Implementations§
Trait Implementations§
impl<T> Send for ThreadUnsafeOnceLock<T>
impl<T> Sync for ThreadUnsafeOnceLock<T>
Auto Trait Implementations§
impl<T> !Freeze for ThreadUnsafeOnceLock<T>
impl<T> RefUnwindSafe for ThreadUnsafeOnceLock<T>where
T: RefUnwindSafe + UnwindSafe,
impl<T> Unpin for ThreadUnsafeOnceLock<T>where
T: Unpin,
impl<T> UnwindSafe for ThreadUnsafeOnceLock<T>where
T: UnwindSafe,
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source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Creates a filterable data provider with the given name for debugging. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moresource§impl<T> MaybeBoxed<Box<T>> for T
impl<T> MaybeBoxed<Box<T>> for T
source§fn maybe_boxed(self) -> Box<T>
fn maybe_boxed(self) -> Box<T>
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source§impl<T> MaybeBoxed<T> for T
impl<T> MaybeBoxed<T> for T
source§fn maybe_boxed(self) -> T
fn maybe_boxed(self) -> T
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