Struct core::cell::SyncUnsafeCell
source · #[repr(transparent)]pub struct SyncUnsafeCell<T: ?Sized> { /* private fields */ }
sync_unsafe_cell
#95439)Expand description
UnsafeCell
, but Sync
.
This is just an UnsafeCell
, except it implements Sync
if T
implements Sync
.
UnsafeCell
doesn’t implement Sync
, to prevent accidental mis-use.
You can use SyncUnsafeCell
instead of UnsafeCell
to allow it to be
shared between threads, if that’s intentional.
Providing proper synchronization is still the task of the user,
making this type just as unsafe to use.
See UnsafeCell
for details.
Implementations§
source§impl<T> SyncUnsafeCell<T>
impl<T> SyncUnsafeCell<T>
sourcepub const fn new<const host: bool = true>(value: T) -> Self
🔬This is a nightly-only experimental API. (sync_unsafe_cell
#95439)
pub const fn new<const host: bool = true>(value: T) -> Self
sync_unsafe_cell
#95439)Constructs a new instance of SyncUnsafeCell
which will wrap the specified value.
sourcepub const fn into_inner<const host: bool = true>(self) -> T
🔬This is a nightly-only experimental API. (sync_unsafe_cell
#95439)
pub const fn into_inner<const host: bool = true>(self) -> T
sync_unsafe_cell
#95439)Unwraps the value, consuming the cell.
source§impl<T: ?Sized> SyncUnsafeCell<T>
impl<T: ?Sized> SyncUnsafeCell<T>
sourcepub const fn get<const host: bool = true>(&self) -> *mut T
🔬This is a nightly-only experimental API. (sync_unsafe_cell
#95439)
pub const fn get<const host: bool = true>(&self) -> *mut T
sync_unsafe_cell
#95439)Gets a mutable pointer to the wrapped value.
This can be cast to a pointer of any kind.
Ensure that the access is unique (no active references, mutable or not)
when casting to &mut T
, and ensure that there are no mutations
or mutable aliases going on when casting to &T
sourcepub const fn get_mut<const host: bool = true>(&mut self) -> &mut T
🔬This is a nightly-only experimental API. (sync_unsafe_cell
#95439)
pub const fn get_mut<const host: bool = true>(&mut self) -> &mut T
sync_unsafe_cell
#95439)Returns a mutable reference to the underlying data.
This call borrows the SyncUnsafeCell
mutably (at compile-time) which
guarantees that we possess the only reference.
sourcepub const fn raw_get<const host: bool = true>(this: *const Self) -> *mut T
🔬This is a nightly-only experimental API. (sync_unsafe_cell
#95439)
pub const fn raw_get<const host: bool = true>(this: *const Self) -> *mut T
sync_unsafe_cell
#95439)Gets a mutable pointer to the wrapped value.
See UnsafeCell::get
for details.
Trait Implementations§
source§impl<T: ?Sized> Debug for SyncUnsafeCell<T>
impl<T: ?Sized> Debug for SyncUnsafeCell<T>
source§impl<T: Default> Default for SyncUnsafeCell<T>
impl<T: Default> Default for SyncUnsafeCell<T>
source§fn default() -> SyncUnsafeCell<T>
fn default() -> SyncUnsafeCell<T>
Creates an SyncUnsafeCell
, with the Default
value for T.
source§impl<T> From<T> for SyncUnsafeCell<T>
impl<T> From<T> for SyncUnsafeCell<T>
source§fn from(t: T) -> SyncUnsafeCell<T>
fn from(t: T) -> SyncUnsafeCell<T>
Creates a new SyncUnsafeCell<T>
containing the given value.