Trait core::marker::Send

pub unsafe auto trait Send { }

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 for more details.

Implementors

• impl<T: Send + ?Sized> Send for Unique<T>
• impl<T: ?Sized> !Send for NonNull<T>
• impl<'a, T: Sync + ?Sized> Send for &'a T
• impl<'a, T: Send + ?Sized> Send for &'a mut T
• impl<T: ?Sized> !Send for *const T
• impl<T: ?Sized> !Send for *mut T
• impl<T> Send for AtomicPtr<T>
• impl<T> Send for Cell<T> where
    T: Send, 
• impl<T: ?Sized> Send for RefCell<T> where
    T: Send, 
• impl<'a, T: Sync> Send for core::slice::Iter<'a, T>
• impl<'a, T: Send> Send for core::slice::IterMut<'a, T>

Auto implementors

• impl<T> Send for Wrapping<T> where
    T: Send, 
• impl Send for TryFromIntError
• impl Send for ParseIntError
• impl Send for ParseFloatError
• impl Send for FpCategory
• impl<T> Send for Discriminant<T>
• impl<T> Send for ManuallyDrop<T> where
    T: Send, 
• impl<T> Send for NonZero<T> where
    T: Send, 
• impl<T: ?Sized> Send for PhantomData<T> where
    T: Send, 
• impl<Idx> Send for Range<Idx> where
    Idx: Send, 
• impl<Idx> Send for RangeFrom<Idx> where
    Idx: Send, 
• impl Send for RangeFull
• impl<Idx> Send for RangeTo<Idx> where
    Idx: Send, 
• impl<Idx> Send for RangeInclusive<Idx> where
    Idx: Send, 
• impl<Idx> Send for RangeToInclusive<Idx> where
    Idx: Send, 
• impl<Y, R> Send for GeneratorState<Y, R> where
    R: Send,
    Y: Send, 
• impl<T> Send for Reverse<T> where
    T: Send, 
• impl Send for core::cmp::Ordering
• impl Send for Infallible
• impl Send for TypeId
• impl Send for TryFromSliceError
• impl Send for AtomicBool
• impl Send for AtomicI8
• impl Send for AtomicU8
• impl Send for AtomicI16
• impl Send for AtomicU16
• impl Send for AtomicI32
• impl Send for AtomicU32
• impl Send for AtomicI64
• impl Send for AtomicU64
• impl Send for AtomicIsize
• impl Send for AtomicUsize
• impl Send for core::sync::atomic::Ordering
• impl Send for BorrowError
• impl Send for BorrowMutError
• impl<'b, T> !Send for Ref<'b, T>
• impl<'b, T> !Send for RefMut<'b, T>
• impl<T: ?Sized> Send for UnsafeCell<T> where
    T: Send, 
• impl Send for ParseCharError
• impl Send for CharTryFromError
• impl Send for EscapeUnicode
• impl Send for EscapeDefault
• impl Send for EscapeDebug
• impl<I> Send for DecodeUtf8<I> where
    I: Send, 
• impl Send for InvalidSequence
• impl<'a> !Send for PanicInfo<'a>
• impl<'a> Send for Location<'a>
• impl<A> Send for Repeat<A> where
    A: Send, 
• impl<F> Send for RepeatWith<F> where
    F: Send, 
• impl<T> Send for Empty<T> where
    T: Send, 
• impl<T> Send for Once<T> where
    T: Send, 
• impl<T> Send for Rev<T> where
    T: Send, 
• impl<I> Send for Cloned<I> where
    I: Send, 
• impl<I> Send for Cycle<I> where
    I: Send, 
• impl<I> Send for StepBy<I> where
    I: Send, 
• impl<A, B> Send for Chain<A, B> where
    A: Send,
    B: Send, 
• impl<A, B> Send for Zip<A, B> where
    A: Send,
    B: Send, 
• impl<I, F> Send for Map<I, F> where
    F: Send,
    I: Send, 
• impl<I, P> Send for Filter<I, P> where
    I: Send,
    P: Send, 
• impl<I, F> Send for FilterMap<I, F> where
    F: Send,
    I: Send, 
• impl<I> Send for Enumerate<I> where
    I: Send, 
• impl<I> Send for Peekable<I> where
    I: Send,
    <I as Iterator>::Item: Send, 
• impl<I, P> Send for SkipWhile<I, P> where
    I: Send,
    P: Send, 
• impl<I, P> Send for TakeWhile<I, P> where
    I: Send,
    P: Send, 
• impl<I> Send for Skip<I> where
    I: Send, 
• impl<I> Send for Take<I> where
    I: Send, 
• impl<I, St, F> Send for Scan<I, St, F> where
    F: Send,
    I: Send,
    St: Send, 
• impl<I, U, F> Send for FlatMap<I, U, F> where
    F: Send,
    I: Send,
    <U as IntoIterator>::IntoIter: Send, 
• impl<I> Send for Flatten<I> where
    I: Send,
    <<I as Iterator>::Item as IntoIterator>::IntoIter: Send, 
• impl<I> Send for Fuse<I> where
    I: Send, 
• impl<I, F> Send for Inspect<I, F> where
    F: Send,
    I: Send, 
• impl<'a, A> Send for core::option::Iter<'a, A> where
    A: Sync, 
• impl<'a, A> Send for core::option::IterMut<'a, A> where
    A: Send, 
• impl<A> Send for core::option::IntoIter<A> where
    A: Send, 
• impl Send for NoneError
• impl<T> Send for Option<T> where
    T: Send, 
• impl !Send for TraitObject
• impl<'a, T> Send for core::result::Iter<'a, T> where
    T: Sync, 
• impl<'a, T> Send for core::result::IterMut<'a, T> where
    T: Send, 
• impl<T> Send for core::result::IntoIter<T> where
    T: Send, 
• impl<T, E> Send for Result<T, E> where
    E: Send,
    T: Send, 
• impl<'a, T, P> Send for core::slice::Split<'a, T, P> where
    P: Send,
    T: Sync, 
• impl<'a, T, P> Send for SplitMut<'a, T, P> where
    P: Send,
    T: Send, 
• impl<'a, T, P> Send for core::slice::RSplit<'a, T, P> where
    P: Send,
    T: Sync, 
• impl<'a, T, P> Send for RSplitMut<'a, T, P> where
    P: Send,
    T: Send, 
• impl<'a, T, P> Send for core::slice::SplitN<'a, T, P> where
    P: Send,
    T: Sync, 
• impl<'a, T, P> Send for core::slice::RSplitN<'a, T, P> where
    P: Send,
    T: Sync, 
• impl<'a, T, P> Send for SplitNMut<'a, T, P> where
    P: Send,
    T: Send, 
• impl<'a, T, P> Send for RSplitNMut<'a, T, P> where
    P: Send,
    T: Send, 
• impl<'a, T> Send for Windows<'a, T> where
    T: Sync, 
• impl<'a, T> Send for Chunks<'a, T> where
    T: Sync, 
• impl<'a, T> Send for ChunksMut<'a, T> where
    T: Send, 
• impl<'a, T> Send for ExactChunks<'a, T> where
    T: Sync, 
• impl<'a, T> Send for ExactChunksMut<'a, T> where
    T: Send, 
• impl Send for ParseBoolError
• impl Send for Utf8Error
• impl<'a> Send for Chars<'a>
• impl<'a> Send for CharIndices<'a>
• impl<'a> Send for Bytes<'a>
• impl<'a, P> Send for core::str::Split<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for core::str::RSplit<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for SplitTerminator<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for RSplitTerminator<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for core::str::SplitN<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for core::str::RSplitN<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for MatchIndices<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for RMatchIndices<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for Matches<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a, P> Send for RMatches<'a, P> where
    <P as Pattern<'a>>::Searcher: Send, 
• impl<'a> Send for Lines<'a>
• impl<'a> Send for LinesAny<'a>
• impl<'a> Send for CharSearcher<'a>
• impl<'a, 'b> Send for CharSliceSearcher<'a, 'b>
• impl<'a, F> Send for CharPredicateSearcher<'a, F> where
    F: Send, 
• impl<'a, 'b> Send for StrSearcher<'a, 'b>
• impl Send for SearchStep
• impl Send for SipHasher
• impl Send for SipHasher13
• impl Send for SipHasher24
• impl<H> Send for BuildHasherDefault<H> where
    H: Send, 
• impl<'a, 'b> !Send for DebugStruct<'a, 'b>
• impl<'a, 'b> !Send for DebugTuple<'a, 'b>
• impl<'a, 'b> !Send for DebugSet<'a, 'b>
• impl<'a, 'b> !Send for DebugList<'a, 'b>
• impl<'a, 'b> !Send for DebugMap<'a, 'b>
• impl Send for Error
• impl<'a> !Send for Formatter<'a>
• impl<'a> !Send for Arguments<'a>
• impl Send for Alignment
• impl Send for Duration