Trait swc_common::sync::Send
1.0.0 · source · [−]pub unsafe auto trait Send { }
Expand description
Types that can be transferred across thread boundaries.
This trait is automatically implemented when the compiler determines it’s appropriate.
An example of a non-Send
type is the reference-counting pointer
rc::Rc
. If two threads attempt to clone Rc
s that point to the same
reference-counted value, they might try to update the reference count at the
same time, which is undefined behavior because Rc
doesn’t use atomic
operations. Its cousin sync::Arc
does use atomic operations (incurring
some overhead) and thus is Send
.
See the Nomicon for more details.
Implementors
impl !Send for Args
impl !Send for ArgsOs
impl Send for AllocScratchError
impl Send for alloc::string::Drain<'_>
impl Send for Waker
impl Send for Once
impl Send for AllocScratch
impl Send for AlignedVec
impl<'a> Send for IoSlice<'a>
impl<'a> Send for IoSliceMut<'a>
impl<'a, 'b, K, Q, V, S, A> Send for OccupiedEntryRef<'a, 'b, K, Q, V, S, A> where
K: Send,
Q: Sync + ?Sized,
V: Send,
S: Send,
A: Send + Allocator + Clone,
impl<'a, R, T> Send for MappedMutexGuard<'a, R, T> where
R: 'a + RawMutex,
T: 'a + Send + ?Sized,
<R as RawMutex>::GuardMarker: Send,
impl<'a, R, T> Send for MappedRwLockReadGuard<'a, R, T> where
R: 'a + RawRwLock,
T: 'a + Sync + ?Sized,
<R as RawRwLock>::GuardMarker: Send,
impl<'a, R, T> Send for MappedRwLockWriteGuard<'a, R, T> where
R: 'a + RawRwLock,
T: 'a + Send + ?Sized,
<R as RawRwLock>::GuardMarker: Send,
impl<'a, T> Send for Drain<'a, T> where
T: Send + Array,
impl<A> Send for SmallVec<A> where
A: Array,
<A as Array>::Item: Send,
impl<Dyn> Send for core::ptr::metadata::DynMetadata<Dyn> where
Dyn: ?Sized,
impl<Dyn> Send for DynMetadata<Dyn> where
Dyn: ?Sized,
impl<K, V> Send for IterMut<'_, K, V> where
K: Send,
V: Send,
impl<K, V, S, A> Send for OccupiedEntry<'_, K, V, S, A> where
K: Send,
V: Send,
S: Send,
A: Send + Allocator + Clone,
impl<K, V, S, A> Send for RawOccupiedEntryMut<'_, K, V, S, A> where
K: Send,
V: Send,
S: Send,
A: Send + Allocator + Clone,
impl<R, G> Send for RawReentrantMutex<R, G> where
R: RawMutex + Send,
G: GetThreadId + Send,
impl<R, G, T> Send for ReentrantMutex<R, G, T> where
R: RawMutex + Send,
G: GetThreadId + Send,
T: Send + ?Sized,
impl<R, T> Send for Mutex<R, T> where
R: RawMutex + Send,
T: Send + ?Sized,
impl<R, T> Send for RwLock<R, T> where
R: RawRwLock + Send,
T: Send + ?Sized,
impl<T> !Send for *const T where
T: ?Sized,
impl<T> !Send for *mut T where
T: ?Sized,
impl<T> !Send for Rc<T> where
T: ?Sized,
impl<T> !Send for alloc::rc::Weak<T> where
T: ?Sized,
impl<T> !Send for NonNull<T> where
T: ?Sized,
NonNull
pointers are not Send
because the data they reference may be aliased.
impl<T> !Send for MutexGuard<'_, T> where
T: ?Sized,
impl<T> !Send for RwLockReadGuard<'_, T> where
T: ?Sized,
impl<T> !Send for RwLockWriteGuard<'_, T> where
T: ?Sized,
impl<T> Send for &T where
T: Sync + ?Sized,
impl<T> Send for &mut T where
T: Send + ?Sized,
impl<T> Send for ThinBox<T> where
T: Send + ?Sized,
ThinBox<T>
is Send
if T
is Send
because the data is owned.