Trait 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 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.

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1.0.0 · Source§

impl !Send for Arguments<'_>

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impl !Send for LocalWaker

1.26.0 · Source§

impl !Send for Args

1.26.0 · Source§

impl !Send for ArgsOs

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impl Send for core::ffi::c_str::Bytes<'_>

1.36.0 · Source§

impl Send for Waker

1.6.0 · Source§

impl Send for fvm_std::prelude::string::Drain<'_>

1.44.0 · Source§

impl<'a> Send for IoSlice<'a>

1.44.0 · Source§

impl<'a> Send for IoSliceMut<'a>

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impl<'a, T, const CAP: usize> Send for arrayvec::arrayvec::Drain<'a, T, CAP>
where T: Send,

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impl<Dyn> Send for DynMetadata<Dyn>
where Dyn: ?Sized,

1.0.0 · Source§

impl<T> !Send for *const T
where T: ?Sized,

1.0.0 · Source§

impl<T> !Send for *mut T
where T: ?Sized,

1.25.0 · Source§

impl<T> !Send for NonNull<T>
where T: ?Sized,

NonNull pointers are not Send because the data they reference may be aliased.

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impl<T> !Send for MappedMutexGuard<'_, T>
where T: ?Sized,

1.0.0 · Source§

impl<T> !Send for MutexGuard<'_, T>
where T: ?Sized,

A MutexGuard is not Send to maximize platform portablity.

On platforms that use POSIX threads (commonly referred to as pthreads) there is a requirement to release mutex locks on the same thread they were acquired. For this reason, MutexGuard must not implement Send to prevent it being dropped from another thread.

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impl<T> !Send for MappedRwLockReadGuard<'_, T>
where T: ?Sized,

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impl<T> !Send for MappedRwLockWriteGuard<'_, T>
where T: ?Sized,

1.0.0 · Source§

impl<T> !Send for RwLockReadGuard<'_, T>
where T: ?Sized,

1.0.0 · Source§

impl<T> !Send for RwLockWriteGuard<'_, T>
where T: ?Sized,

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impl<T> !Send for ReentrantLockGuard<'_, T>
where T: ?Sized,

1.0.0 · Source§

impl<T> Send for &T
where T: Sync + ?Sized,

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impl<T> Send for ThinBox<T>
where T: Send + ?Sized,

ThinBox<T> is Send if T is Send because the data is owned.

1.0.0 · Source§

impl<T> Send for alloc::collections::linked_list::Iter<'_, T>
where T: Sync,

1.0.0 · Source§

impl<T> Send for alloc::collections::linked_list::IterMut<'_, T>
where T: Send,

1.0.0 · Source§

impl<T> Send for Cell<T>
where T: Send + ?Sized,

1.0.0 · Source§

impl<T> Send for RefCell<T>
where T: Send + ?Sized,

1.28.0 · Source§

impl<T> Send for NonZero<T>

1.31.0 · Source§

impl<T> Send for ChunksExactMut<'_, T>
where T: Send,

1.0.0 · Source§

impl<T> Send for ChunksMut<'_, T>
where T: Send,

1.0.0 · Source§

impl<T> Send for core::slice::iter::Iter<'_, T>
where T: Sync,

1.0.0 · Source§

impl<T> Send for core::slice::iter::IterMut<'_, T>
where T: Send,

1.31.0 · Source§

impl<T> Send for RChunksExactMut<'_, T>
where T: Send,

1.31.0 · Source§

impl<T> Send for RChunksMut<'_, T>
where T: Send,

1.0.0 · Source§

impl<T> Send for AtomicPtr<T>

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impl<T> Send for std::sync::mpmc::Receiver<T>
where T: Send,

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impl<T> Send for std::sync::mpmc::Sender<T>
where T: Send,

1.0.0 · Source§

impl<T> Send for std::sync::mpsc::Receiver<T>
where T: Send,

1.0.0 · Source§

impl<T> Send for std::sync::mpsc::Sender<T>
where T: Send,

1.0.0 · Source§

impl<T> Send for SyncSender<T>
where T: Send,

1.70.0 · Source§

impl<T> Send for OnceLock<T>
where T: Send,

1.0.0 · Source§

impl<T> Send for Mutex<T>
where T: Send + ?Sized,

T must be Send for a Mutex to be Send because it is possible to acquire the owned T from the Mutex via into_inner.

1.0.0 · Source§

impl<T> Send for RwLock<T>
where T: Send + ?Sized,

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impl<T> Send for ReentrantLock<T>
where T: Send + ?Sized,

1.29.0 · Source§

impl<T> Send for JoinHandle<T>

1.0.0 · Source§

impl<T, A> !Send for Rc<T, A>
where A: Allocator, T: ?Sized,

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impl<T, A> !Send for UniqueRc<T, A>
where A: Allocator, T: ?Sized,

1.4.0 · Source§

impl<T, A> !Send for alloc::rc::Weak<T, A>
where A: Allocator, T: ?Sized,

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impl<T, A> Send for Cursor<'_, T, A>
where T: Sync, A: Allocator + Sync,

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impl<T, A> Send for CursorMut<'_, T, A>
where T: Send, A: Allocator + Send,

1.0.0 · Source§

impl<T, A> Send for LinkedList<T, A>
where T: Send, A: Allocator + Send,

1.6.0 · Source§

impl<T, A> Send for alloc::collections::vec_deque::drain::Drain<'_, T, A>
where T: Send, A: Allocator + Send,

1.0.0 · Source§

impl<T, A> Send for Arc<T, A>
where T: Sync + Send + ?Sized, A: Allocator + Send,

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impl<T, A> Send for UniqueArc<T, A>
where T: Sync + Send + ?Sized, A: Allocator + Send,

1.4.0 · Source§

impl<T, A> Send for alloc::sync::Weak<T, A>
where T: Sync + Send + ?Sized, A: Allocator + Send,

1.6.0 · Source§

impl<T, A> Send for fvm_std::prelude::vec::Drain<'_, T, A>
where T: Send, A: Send + Allocator,

1.0.0 · Source§

impl<T, A> Send for IntoIter<T, A>
where T: Send, A: Allocator + Send,

Auto implementors§

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impl Send for LogLevel

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impl Send for Ordering

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impl Send for SearchStep

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impl Send for H160

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impl Send for H256

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impl Send for ParseBoolError

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impl Send for Utf8Error

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impl Send for FromUtf8Error

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impl Send for FromUtf16Error

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impl Send for IntoChars

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impl Send for String

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impl<'a> Send for Utf8Pattern<'a>

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impl<'a> Send for CharSearcher<'a>

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impl<'a> Send for fvm_std::prelude::str::Bytes<'a>

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impl<'a> Send for CharIndices<'a>

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impl<'a> Send for Chars<'a>

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impl<'a> Send for EncodeUtf16<'a>

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impl<'a> Send for EscapeDebug<'a>

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impl<'a> Send for EscapeDefault<'a>

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impl<'a> Send for EscapeUnicode<'a>

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impl<'a> Send for Lines<'a>

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impl<'a> Send for LinesAny<'a>

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impl<'a> Send for SplitAsciiWhitespace<'a>

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impl<'a> Send for SplitWhitespace<'a>

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impl<'a> Send for Utf8Chunk<'a>

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impl<'a> Send for Utf8Chunks<'a>

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impl<'a, 'b> Send for CharSliceSearcher<'a, 'b>

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impl<'a, 'b> Send for StrSearcher<'a, 'b>

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impl<'a, 'b, const N: usize> Send for CharArrayRefSearcher<'a, 'b, N>

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impl<'a, F> Send for CharPredicateSearcher<'a, F>
where F: Send,

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impl<'a, I, A> Send for Splice<'a, I, A>
where I: Send, <I as Iterator>::Item: Send, A: Send,

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impl<'a, P> Send for MatchIndices<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for Matches<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for RMatchIndices<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for RMatches<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for RSplit<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for RSplitN<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for RSplitTerminator<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for Split<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for SplitInclusive<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for SplitN<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, P> Send for SplitTerminator<'a, P>
where <P as Pattern>::Searcher<'a>: Send,

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impl<'a, T> Send for PeekMut<'a, T>
where T: Send,

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impl<'a, T, F, A> Send for ExtractIf<'a, T, F, A>
where F: Send, A: Send, T: Send,

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impl<'a, const N: usize> Send for CharArraySearcher<'a, N>

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impl<K, V> Send for HyperMap<K, V>
where K: Send, V: Send,

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impl<T> Send for Option<T>
where T: Send,

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impl<T> Send for HyperList<T>
where T: Send,

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impl<T> Send for Event<T>
where T: Send,

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impl<T> Send for Reverse<T>
where T: Send,

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impl<T, A> Send for Box<T, A>
where A: Send, T: Send + ?Sized,

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impl<T, A> Send for Vec<T, A>
where A: Send, T: Send,

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impl<T, E> Send for Result<T, E>
where T: Send, E: Send,