Struct heron::rapier_plugin::rapier2d::crossbeam::epoch::Owned [−]
Expand description
An owned heap-allocated object.
This type is very similar to Box<T>
.
The pointer must be properly aligned. Since it is aligned, a tag can be stored into the unused least significant bits of the address.
Implementations
impl<T> Owned<T>
impl<T> Owned<T>
Returns a new owned pointer pointing to raw
.
This function is unsafe because improper use may lead to memory problems. Argument raw
must be a valid pointer. Also, a double-free may occur if the function is called twice on
the same raw pointer.
Panics
Panics if raw
is not properly aligned.
Safety
The given raw
should have been derived from Owned
, and one raw
should not be converted
back by Owned::from_raw()
multiple times.
Examples
use crossbeam_epoch::Owned;
let o = unsafe { Owned::from_raw(Box::into_raw(Box::new(1234))) };
Converts the owned pointer into a Box
.
Examples
use crossbeam_epoch::Owned;
let o = Owned::new(1234);
let b: Box<i32> = o.into_box();
assert_eq!(*b, 1234);
Trait Implementations
pub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
pub unsafe fn from_usize(data: usize) -> Owned<T>
pub unsafe fn from_usize(data: usize) -> Owned<T>
Returns a new pointer pointing to the tagged pointer data
.
Panics
Panics if the data is zero in debug mode.
pub fn into_usize(self) -> usize
pub fn into_usize(self) -> usize
Returns the machine representation of the pointer.
Auto Trait Implementations
impl<T: ?Sized> RefUnwindSafe for Owned<T> where
T: RefUnwindSafe,
impl<T: ?Sized> UnwindSafe for Owned<T> where
T: UnwindSafe,
Blanket Implementations
Mutably borrows from an owned value. Read more
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more
impl<T> Pointable for T
impl<T> Pointable for T
impl<SS, SP> SupersetOf<SS> for SP where
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SP where
SS: SubsetOf<SP>,
The inverse inclusion map: attempts to construct self
from the equivalent element of its
superset. Read more
pub fn is_in_subset(&self) -> bool
pub fn is_in_subset(&self) -> bool
Checks if self
is actually part of its subset T
(and can be converted to it).
pub fn to_subset_unchecked(&self) -> SS
pub fn to_subset_unchecked(&self) -> SS
Use with care! Same as self.to_subset
but without any property checks. Always succeeds.
pub fn from_subset(element: &SS) -> SP
pub fn from_subset(element: &SS) -> SP
The inclusion map: converts self
to the equivalent element of its superset.
pub fn clone_type_data(&self) -> Box<dyn TypeData + 'static, Global>
pub fn vzip(self) -> V
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more