pub struct AtomicOnceCellArray<T> { /* private fields */ }
Expand description
A fixed-size array with capacity
determined at run-time. The elements of the array are uninitialized.
Elements may be initialized with set
and then retrieved as a reference with get
. Calling set
is
thread-safe. The array will panic if the capacity
is exceeded, or the index
is out of range, or the
set
function is called more than once on an index when T
is not zero-sized. The array will only drop
initialized elements.
§Guarantees
- The array will not allocate if
capacity
is 0 or ifT
is zero-sized. - The allocated memory will not be
default
initialized. - Elements initialized by
set
are immutable. - The synchronization is
lock-free
.
§Zero-sized Types
When T
is zero-sized, the array does not track individual indices and instead only maintains a count of
how many instances of T
have been set
in the array. On drop
, the array will drop
that many instances
of T
. The array will panic if the number of calls to set
exceeds the capacity.
Implementations§
source§impl<T> AtomicOnceCellArray<T>
impl<T> AtomicOnceCellArray<T>
Trait Implementations§
source§impl<T> Drop for AtomicOnceCellArray<T>
impl<T> Drop for AtomicOnceCellArray<T>
impl<T> Sync for AtomicOnceCellArray<T>
Auto Trait Implementations§
impl<T> !RefUnwindSafe for AtomicOnceCellArray<T>
impl<T> Send for AtomicOnceCellArray<T>where
T: Send,
impl<T> Unpin for AtomicOnceCellArray<T>
impl<T> UnwindSafe for AtomicOnceCellArray<T>where
T: UnwindSafe,
Blanket Implementations§
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
§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn 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
.§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Convert
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
.§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert
&Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s.§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
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.