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 SharedDeserializeMapError
impl Send for AllocScratchError
impl Send for SharedSerializeMapError
impl Send for Waker
impl Send for Once
impl Send for AllocScratch
impl Send for SharedSerializeMap
impl Send for AlignedVec
impl<'_> Send for alloc::string::Drain<'_>
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<'_, 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 Cursor<'_, T> where
T: Sync,
impl<'_, T> Send for CursorMut<'_, T> where
T: Send,
impl<'_, T> Send for alloc::collections::linked_list::Iter<'_, T> where
T: Sync,
impl<'_, T> Send for alloc::collections::linked_list::IterMut<'_, T> where
T: Send,
impl<'_, T> Send for alloc::collections::vec_deque::iter_mut::IterMut<'_, T> where
T: Send,
impl<'_, T> Send for core::slice::iter::Iter<'_, T> where
T: Sync,
impl<'_, T> Send for core::slice::iter::IterMut<'_, T> where
T: Send,
impl<'_, T, A> Send for alloc::collections::vec_deque::drain::Drain<'_, T, A> where
T: Send,
A: Allocator + Send,
impl<'_, T, A> Send for alloc::vec::drain::Drain<'_, T, A> where
T: Send,
A: Send + Allocator,
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<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.