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 Rcs 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 and the Sync trait for more details.
Implementors§
impl !Send for TokenTree
impl !Send for ExpandError
impl !Send for Group
impl !Send for LexError
impl !Send for Punct
impl !Send for Span
impl !Send for TokenStream
impl !Send for Args
impl !Send for ArgsOs
impl Send for scrypto_test::prelude::radix_engine_common::prelude::rust::string::Drain<'_>
impl Send for FakeWasmiInstanceEnv
impl Send for Waker
impl Send for Collector
impl Send for Parker
impl Send for Select<'_>
impl Send for Unparker
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>
impl<'a, 'b, K, Q, V, S, A> Send for OccupiedEntryRef<'a, 'b, K, Q, V, S, A>
impl<'a, 'b, K, Q, V, S, A> Send for OccupiedEntryRef<'a, 'b, K, Q, V, S, A>
impl<'a, 'i, K, V> Send for Iter<'i, K, V>
impl<'a, R, T> Send for MappedMutexGuard<'a, R, T>
impl<'a, R, T> Send for MappedRwLockReadGuard<'a, R, T>
impl<'a, R, T> Send for MappedRwLockWriteGuard<'a, R, T>
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<A, B> Send for ArcUnion<A, B>
impl<C> Send for Secp256k1<C>where
C: Context,
impl<Dyn> Send for DynMetadata<Dyn>where
Dyn: ?Sized,
impl<H, T> Send for ThinArc<H, T>
impl<Idx, T> Send for Arena<Idx, T>where
T: Send,
Arena does not store Idx therefore it is Send without its bound.
impl<Idx, T> Send for ComponentVec<Idx, T>where
T: Send,
[ComponentVec] does not store Idx therefore it is Send without its bound.
impl<K, V> Send for IterMut<'_, K, V>
impl<K, V> Send for IterMut<'_, K, V>
impl<K, V> Send for IterMut<'_, K, V>
impl<K, V, S> Send for Cache<K, V, S>
impl<K, V, S> Send for SegmentedCache<K, V, S>
impl<K, V, S, A> Send for OccupiedEntry<'_, K, V, S, A>
impl<K, V, S, A> Send for OccupiedEntry<'_, K, V, S, A>
impl<K, V, S, A> Send for OccupiedEntry<'_, K, V, S, A>
impl<K, V, S, A> Send for RawOccupiedEntryMut<'_, K, V, S, A>
impl<K, V, S, A> Send for RawOccupiedEntryMut<'_, K, V, S, A>
impl<K, V, S, A> Send for RawOccupiedEntryMut<'_, K, V, S, A>
impl<R, G> Send for RawReentrantMutex<R, G>
impl<R, G, T> Send for ReentrantMutex<R, G, T>
impl<R, T> Send for Mutex<R, T>
impl<R, T> Send for RwLock<R, T>
impl<T> !Send for *const Twhere
T: ?Sized,
impl<T> !Send for *mut Twhere
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 scrypto_test::prelude::radix_engine_common::prelude::rust::sync::RwLockReadGuard<'_, T>where
T: ?Sized,
impl<T> !Send for scrypto_test::prelude::radix_engine_common::prelude::rust::sync::RwLockWriteGuard<'_, T>where
T: ?Sized,
impl<T> Send for &T
impl<T> Send for Cell<T>
impl<T> Send for RefCell<T>
impl<T> Send for ThinBox<T>
ThinBox<T> is Send if T is Send because the data is owned.