Struct devela::_std::cell::SyncUnsafeCell
source · pub struct SyncUnsafeCell<T>where
T: ?Sized,{ /* private fields */ }sync_unsafe_cell)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(value: T) -> SyncUnsafeCell<T>
🔬This is a nightly-only experimental API. (sync_unsafe_cell)Available on crate feature mem only.
pub const fn new(value: T) -> SyncUnsafeCell<T>
sync_unsafe_cell)mem only.Constructs a new instance of SyncUnsafeCell which will wrap the specified value.
sourcepub const fn into_inner(self) -> T
🔬This is a nightly-only experimental API. (sync_unsafe_cell)Available on crate feature mem only.
pub const fn into_inner(self) -> T
sync_unsafe_cell)mem only.Unwraps the value, consuming the cell.
source§impl<T> SyncUnsafeCell<T>where
T: ?Sized,
impl<T> SyncUnsafeCell<T>where
T: ?Sized,
sourcepub const fn get(&self) -> *mut T
🔬This is a nightly-only experimental API. (sync_unsafe_cell)Available on crate feature mem only.
pub const fn get(&self) -> *mut T
sync_unsafe_cell)mem only.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(&mut self) -> &mut T
🔬This is a nightly-only experimental API. (sync_unsafe_cell)Available on crate feature mem only.
pub const fn get_mut(&mut self) -> &mut T
sync_unsafe_cell)mem only.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(this: *const SyncUnsafeCell<T>) -> *mut T
🔬This is a nightly-only experimental API. (sync_unsafe_cell)Available on crate feature mem only.
pub const fn raw_get(this: *const SyncUnsafeCell<T>) -> *mut T
sync_unsafe_cell)mem only.Gets a mutable pointer to the wrapped value.
See UnsafeCell::get for details.
Trait Implementations§
source§impl<T> Debug for SyncUnsafeCell<T>where
T: ?Sized,
impl<T> Debug for SyncUnsafeCell<T>where
T: ?Sized,
source§impl<T> Default for SyncUnsafeCell<T>where
T: Default,
impl<T> Default for SyncUnsafeCell<T>where
T: Default,
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.
impl<T, U> CoerceUnsized<SyncUnsafeCell<U>> for SyncUnsafeCell<T>where
T: CoerceUnsized<U>,
impl<T, U> DispatchFromDyn<SyncUnsafeCell<U>> for SyncUnsafeCell<T>where
T: DispatchFromDyn<U>,
impl<T> Sync for SyncUnsafeCell<T>
Auto Trait Implementations§
impl<T> !RefUnwindSafe for SyncUnsafeCell<T>
impl<T: ?Sized> Send for SyncUnsafeCell<T>where
T: Send,
impl<T: ?Sized> Unpin for SyncUnsafeCell<T>where
T: Unpin,
impl<T: ?Sized> UnwindSafe for SyncUnsafeCell<T>where
T: UnwindSafe,
Blanket Implementations§
source§impl<T> Also for T
impl<T> Also for T
source§impl<T> AnyExt for Twhere
T: Any,
impl<T> AnyExt for Twhere
T: Any,
source§fn type_name(&self) -> &'static str
fn type_name(&self) -> &'static str
any only.self. Read moresource§fn as_any_ref(&self) -> &dyn Anywhere
Self: Sized,
fn as_any_ref(&self) -> &dyn Anywhere
Self: Sized,
any only.source§fn as_any_mut(&mut self) -> &mut dyn Anywhere
Self: Sized,
fn as_any_mut(&mut self) -> &mut dyn Anywhere
Self: Sized,
any only.source§impl<T, Res> Apply<Res> for Twhere
T: ?Sized,
impl<T, Res> Apply<Res> for Twhere
T: ?Sized,
source§fn apply<F: FnOnce(Self) -> Res>(self, f: F) -> Reswhere
Self: Sized,
fn apply<F: FnOnce(Self) -> Res>(self, f: F) -> Reswhere
Self: Sized,
result only.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
source§impl<T> Mem for Twhere
T: ?Sized,
impl<T> Mem for Twhere
T: ?Sized,
source§const NEEDS_DROP: bool = _
const NEEDS_DROP: bool = _
mem only.source§fn mem_needs_drop(&self) -> bool
fn mem_needs_drop(&self) -> bool
mem only.true if dropping values of this type matters.source§fn mem_drop(self)where
Self: Sized,
fn mem_drop(self)where
Self: Sized,
mem only.self by running its destructor.source§fn mem_forget(self)where
Self: Sized,
fn mem_forget(self)where
Self: Sized,
mem only.self without running its destructor.source§fn mem_replace(&mut self, other: Self) -> Selfwhere
Self: Sized,
fn mem_replace(&mut self, other: Self) -> Selfwhere
Self: Sized,
mem only.self with other, returning the previous value of self.source§fn mem_take(&mut self) -> Selfwhere
Self: Default,
fn mem_take(&mut self) -> Selfwhere
Self: Default,
mem only.self with its default value, returning the previous value of self.source§fn mem_swap(&mut self, other: &mut Self)where
Self: Sized,
fn mem_swap(&mut self, other: &mut Self)where
Self: Sized,
mem only.self and other without deinitializing either one.source§fn mem_as_bytes(&self) -> &[u8] ⓘ
fn mem_as_bytes(&self) -> &[u8] ⓘ
mem and unsafe_mem only.source§impl<T> Size for T
impl<T> Size for T
source§const BYTE_ALIGN: usize = _
const BYTE_ALIGN: usize = _
mem only.source§const BYTE_SIZE: usize = _
const BYTE_SIZE: usize = _
mem only.source§const PTR_SIZE: usize = 8usize
const PTR_SIZE: usize = 8usize
mem only.source§fn byte_align(&self) -> usize
fn byte_align(&self) -> usize
mem only.