1.33.0[−][src]Trait core::marker::Unpin

#[lang = "unpin"]pub auto trait Unpin { }

Types that can be safely moved after being pinned.

Rust itself has no notion of immovable types, and considers moves (e.g., through assignment or mem::replace) to always be safe.

The Pin type is used instead to prevent moves through the type system. Pointers P<T> wrapped in the Pin<P<T>> wrapper can't be moved out of. See the pin module documentation for more information on pinning.

Implementing the Unpin trait for T lifts the restrictions of pinning off the type, which then allows moving T out of Pin<P<T>> with functions such as mem::replace.

Unpin has no consequence at all for non-pinned data. In particular, mem::replace happily moves !Unpin data (it works for any &mut T, not just when T: Unpin). However, you cannot use mem::replace on data wrapped inside a Pin<P<T>> because you cannot get the &mut T you need for that, and that is what makes this system work.

So this, for example, can only be done on types implementing Unpin:

use std::mem;
use std::pin::Pin;

let mut string = "this".to_string();
let mut pinned_string = Pin::new(&mut string);

// We need a mutable reference to call `mem::replace`.
// We can obtain such a reference by (implicitly) invoking `Pin::deref_mut`,
// but that is only possible because `String` implements `Unpin`.
mem::replace(&mut *pinned_string, "other".to_string());

Run

This trait is automatically implemented for almost every type.

Implementors

`impl !Unpin for PhantomPinned`[src]

`impl Unpin for Waker`[src]

`impl<'a, T: ?Sized + 'a> Unpin for &'a T`[src]

`impl<'a, T: ?Sized + 'a> Unpin for &'a mut T`[src]

`impl<F> Unpin for PollFn<F>`[src]

`impl<T> Unpin for Pending<T>`[src]

`impl<T> Unpin for Ready<T>`[src]

`impl<T: ?Sized> Unpin for *const T`[src]

`impl<T: ?Sized> Unpin for *mut T`[src]

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Auto implementors

`impl Unpin for core::cmp::Ordering`

`impl Unpin for Infallible`

`impl Unpin for c_void`

`impl Unpin for Alignment`

`impl Unpin for FpCategory`

`impl Unpin for IntErrorKind`

`impl Unpin for SearchStep`

`impl Unpin for core::sync::atomic::Ordering`

`impl Unpin for AllocError`

`impl Unpin for Layout`

`impl Unpin for LayoutError`

`impl Unpin for TypeId`

`impl Unpin for float64x1_t`

`impl Unpin for float64x2_t`

`impl Unpin for int8x16x2_t`

`impl Unpin for int8x16x3_t`

`impl Unpin for int8x16x4_t`

`impl Unpin for poly8x16x2_t`

`impl Unpin for poly8x16x3_t`

`impl Unpin for poly8x16x4_t`

`impl Unpin for uint8x16x2_t`

`impl Unpin for uint8x16x3_t`

`impl Unpin for uint8x16x4_t`

`impl Unpin for APSR`

`impl Unpin for SY`

`impl Unpin for float32x2_t`

`impl Unpin for float32x4_t`

`impl Unpin for int8x8_t`

`impl Unpin for int8x8x2_t`

`impl Unpin for int8x8x3_t`

`impl Unpin for int8x8x4_t`

`impl Unpin for int8x16_t`

`impl Unpin for int16x4_t`

`impl Unpin for int16x8_t`

`impl Unpin for int32x2_t`

`impl Unpin for int32x4_t`

`impl Unpin for int64x1_t`

`impl Unpin for int64x2_t`

`impl Unpin for poly8x8_t`

`impl Unpin for poly8x8x2_t`

`impl Unpin for poly8x8x3_t`

`impl Unpin for poly8x8x4_t`

`impl Unpin for poly8x16_t`

`impl Unpin for poly16x4_t`

`impl Unpin for poly16x8_t`

`impl Unpin for poly64x1_t`

`impl Unpin for poly64x2_t`

`impl Unpin for uint8x8_t`

`impl Unpin for uint8x8x2_t`

`impl Unpin for uint8x8x3_t`

`impl Unpin for uint8x8x4_t`

`impl Unpin for uint8x16_t`

`impl Unpin for uint16x4_t`

`impl Unpin for uint16x8_t`

`impl Unpin for uint32x2_t`

`impl Unpin for uint32x4_t`

`impl Unpin for uint64x1_t`

`impl Unpin for uint64x2_t`

`impl Unpin for vector_bool_long`

`impl Unpin for vector_double`

`impl Unpin for vector_signed_long`

`impl Unpin for vector_unsigned_long`

`impl Unpin for v128`

`impl Unpin for CpuidResult`

`impl Unpin for __m128`

`impl Unpin for __m128d`

`impl Unpin for __m128i`

`impl Unpin for __m256`

`impl Unpin for __m256d`

`impl Unpin for __m256i`

`impl Unpin for __m512`

`impl Unpin for __m512d`

`impl Unpin for __m512i`

`impl Unpin for TryFromSliceError`

`impl Unpin for core::ascii::EscapeDefault`

`impl Unpin for BorrowError`

`impl Unpin for BorrowMutError`

`impl Unpin for CharTryFromError`

`impl Unpin for DecodeUtf16Error`

`impl Unpin for core::char::EscapeDebug`

`impl Unpin for core::char::EscapeDefault`

`impl Unpin for core::char::EscapeUnicode`

`impl Unpin for ParseCharError`

`impl Unpin for ToLowercase`

`impl Unpin for ToUppercase`

`impl Unpin for Error`

`impl Unpin for SipHasher`

`impl Unpin for NonZeroI8`

`impl Unpin for NonZeroI16`

`impl Unpin for NonZeroI32`

`impl Unpin for NonZeroI64`

`impl Unpin for NonZeroI128`

`impl Unpin for NonZeroIsize`

`impl Unpin for NonZeroU8`

`impl Unpin for NonZeroU16`

`impl Unpin for NonZeroU32`

`impl Unpin for NonZeroU64`

`impl Unpin for NonZeroU128`

`impl Unpin for NonZeroUsize`

`impl Unpin for ParseFloatError`

`impl Unpin for ParseIntError`

`impl Unpin for TryFromIntError`

`impl Unpin for RangeFull`

`impl Unpin for NoneError`

`impl Unpin for TraitObject`

`impl Unpin for Utf8Lossy`

`impl Unpin for ParseBoolError`

`impl Unpin for Utf8Error`

`impl Unpin for AtomicBool`

`impl Unpin for AtomicI8`

`impl Unpin for AtomicI16`

`impl Unpin for AtomicI32`

`impl Unpin for AtomicI64`

`impl Unpin for AtomicIsize`

`impl Unpin for AtomicU8`

`impl Unpin for AtomicU16`

`impl Unpin for AtomicU32`

`impl Unpin for AtomicU64`

`impl Unpin for AtomicUsize`

`impl Unpin for RawWaker`

`impl Unpin for RawWakerVTable`

`impl Unpin for Duration`

`impl<'a> Unpin for Arguments<'a>`

`impl<'a> Unpin for Formatter<'a>`

`impl<'a> Unpin for Location<'a>`

`impl<'a> Unpin for PanicInfo<'a>`

`impl<'a> Unpin for Utf8LossyChunk<'a>`

`impl<'a> Unpin for Utf8LossyChunksIter<'a>`

`impl<'a> Unpin for CharSearcher<'a>`

`impl<'a> Unpin for Bytes<'a>`

`impl<'a> Unpin for CharIndices<'a>`

`impl<'a> Unpin for Chars<'a>`

`impl<'a> Unpin for EncodeUtf16<'a>`

`impl<'a> Unpin for core::str::EscapeDebug<'a>`

`impl<'a> Unpin for core::str::EscapeDefault<'a>`

`impl<'a> Unpin for core::str::EscapeUnicode<'a>`

`impl<'a> Unpin for Lines<'a>`

`impl<'a> Unpin for LinesAny<'a>`

`impl<'a> Unpin for SplitAsciiWhitespace<'a>`

`impl<'a> Unpin for SplitWhitespace<'a>`

`impl<'a> Unpin for Context<'a>`

`impl<'a, 'b> Unpin for DebugList<'a, 'b> where 'b: 'a,`

`impl<'a, 'b> Unpin for DebugMap<'a, 'b> where 'b: 'a,`

`impl<'a, 'b> Unpin for DebugSet<'a, 'b> where 'b: 'a,`

`impl<'a, 'b> Unpin for DebugStruct<'a, 'b> where 'b: 'a,`

`impl<'a, 'b> Unpin for DebugTuple<'a, 'b> where 'b: 'a,`

`impl<'a, 'b> Unpin for CharSliceSearcher<'a, 'b>`

`impl<'a, 'b> Unpin for StrSearcher<'a, 'b>`

`impl<'a, 'f> Unpin for VaList<'a, 'f> where 'f: 'a,`

`impl<'a, A> Unpin for core::option::Iter<'a, A>`

`impl<'a, A> Unpin for core::option::IterMut<'a, A>`

`impl<'a, F> Unpin for CharPredicateSearcher<'a, F> where F: MultiCharEq + Unpin,`

`impl<'a, P> Unpin for MatchIndices<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for Matches<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for RMatchIndices<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for RMatches<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for core::str::RSplit<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for core::str::RSplitN<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for RSplitTerminator<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for core::str::Split<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for core::str::SplitN<'a, P> where >::Searcher: Unpin,`

`impl<'a, P> Unpin for SplitTerminator<'a, P> where >::Searcher: Unpin,`

`impl<'a, T> Unpin for core::result::Iter<'a, T>`

`impl<'a, T> Unpin for core::result::IterMut<'a, T>`

`impl<'a, T> Unpin for Chunks<'a, T>`

`impl<'a, T> Unpin for ChunksExact<'a, T>`

`impl<'a, T> Unpin for ChunksExactMut<'a, T>`

`impl<'a, T> Unpin for ChunksMut<'a, T>`

`impl<'a, T> Unpin for core::slice::Iter<'a, T>`

`impl<'a, T> Unpin for core::slice::IterMut<'a, T>`

`impl<'a, T> Unpin for RChunks<'a, T>`

`impl<'a, T> Unpin for RChunksExact<'a, T>`

`impl<'a, T> Unpin for RChunksExactMut<'a, T>`

`impl<'a, T> Unpin for RChunksMut<'a, T>`

`impl<'a, T> Unpin for Windows<'a, T>`

`impl<'a, T, P> Unpin for core::slice::RSplit<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for RSplitMut<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for core::slice::RSplitN<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for RSplitNMut<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for core::slice::Split<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for SplitInclusive<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for SplitInclusiveMut<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for SplitMut<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for core::slice::SplitN<'a, T, P> where P: Unpin,`

`impl<'a, T, P> Unpin for SplitNMut<'a, T, P> where P: Unpin,`

`impl<'a, T, const N: usize> Unpin for ArrayChunks<'a, T, N>`

`impl<'a, T, const N: usize> Unpin for ArrayChunksMut<'a, T, N>`

`impl<'a, T, const N: usize> Unpin for ArrayWindows<'a, T, N>`

`impl<'b, T: ?Sized> Unpin for Ref<'b, T>`

`impl<'b, T: ?Sized> Unpin for RefMut<'b, T>`

`impl<'f> Unpin for VaListImpl<'f>`

`impl<A> Unpin for Repeat<A> where A: Unpin,`

`impl<A> Unpin for core::option::IntoIter<A> where A: Unpin,`

`impl<A, B> Unpin for Chain<A, B> where A: Unpin, B: Unpin,`

`impl<A, B> Unpin for Zip<A, B> where A: Unpin, B: Unpin,`

`impl<B, C> Unpin for ControlFlow<B, C> where B: Unpin, C: Unpin,`

`impl<F> Unpin for FromFn<F> where F: Unpin,`

`impl<F> Unpin for OnceWith<F> where F: Unpin,`

`impl<F> Unpin for RepeatWith<F> where F: Unpin,`

`impl<H> Unpin for BuildHasherDefault<H> where H: Unpin,`

`impl Unpin for DecodeUtf16 where I: Unpin,`

`impl Unpin for Cloned where I: Unpin,`

`impl Unpin for Copied where I: Unpin,`

`impl Unpin for Cycle where I: Unpin,`

`impl Unpin for Enumerate where I: Unpin,`

`impl Unpin for Flatten where I: Unpin, <::Item as IntoIterator>::IntoIter: Unpin,`

`impl Unpin for Fuse where I: Unpin,`

`impl Unpin for Peekable where I: Unpin, ::Item: Unpin,`

`impl Unpin for Skip where I: Unpin,`

`impl Unpin for StepBy where I: Unpin,`

`impl Unpin for Take where I: Unpin,`

`impl<I, F> Unpin for FilterMap<I, F> where F: Unpin, I: Unpin,`

`impl<I, F> Unpin for Inspect<I, F> where F: Unpin, I: Unpin,`

`impl<I, F> Unpin for Map<I, F> where F: Unpin, I: Unpin,`

`impl<I, P> Unpin for Filter<I, P> where I: Unpin, P: Unpin,`

`impl<I, P> Unpin for MapWhile<I, P> where I: Unpin, P: Unpin,`

`impl<I, P> Unpin for SkipWhile<I, P> where I: Unpin, P: Unpin,`

`impl<I, P> Unpin for TakeWhile<I, P> where I: Unpin, P: Unpin,`

`impl<I, St, F> Unpin for Scan<I, St, F> where F: Unpin, I: Unpin, St: Unpin,`

`impl<I, U, F> Unpin for FlatMap<I, U, F> where F: Unpin, I: Unpin, ::IntoIter: Unpin,`

`impl<Idx> Unpin for Range<Idx> where Idx: Unpin,`

`impl<Idx> Unpin for RangeFrom<Idx> where Idx: Unpin,`

`impl<Idx> Unpin for RangeInclusive<Idx> where Idx: Unpin,`

`impl<Idx> Unpin for RangeTo<Idx> where Idx: Unpin,`

`impl<Idx> Unpin for RangeToInclusive<Idx> where Idx: Unpin,`

`impl Unpin for Pin where P: Unpin,`

`impl<T> Unpin for Bound<T> where T: Unpin,`

`impl<T> Unpin for Option<T> where T: Unpin,`

`impl<T> Unpin for Poll<T> where T: Unpin,`

`impl<T> Unpin for Reverse<T> where T: Unpin,`

`impl<T> Unpin for Empty<T> where T: Unpin,`

`impl<T> Unpin for Once<T> where T: Unpin,`

`impl<T> Unpin for Rev<T> where T: Unpin,`

`impl<T> Unpin for OnceCell<T> where T: Unpin,`

`impl<T> Unpin for Discriminant<T> where <T as DiscriminantKind>::Discriminant: Unpin,`

`impl<T> Unpin for Wrapping<T> where T: Unpin,`

`impl<T> Unpin for core::result::IntoIter<T> where T: Unpin,`

`impl<T> Unpin for AtomicPtr<T>`

`impl<T> Unpin for MaybeUninit<T> where T: Unpin,`

`impl<T, E> Unpin for Result<T, E> where E: Unpin, T: Unpin,`

`impl<T, F> Unpin for Successors<T, F> where F: Unpin, T: Unpin,`

`impl<T, F> Unpin for Lazy<T, F> where F: Unpin, T: Unpin,`

`impl<T, const N: usize> Unpin for core::array::IntoIter<T, N> where T: Unpin,`

`impl<T: ?Sized> Unpin for Cell<T> where T: Unpin,`

`impl<T: ?Sized> Unpin for RefCell<T> where T: Unpin,`

`impl<T: ?Sized> Unpin for UnsafeCell<T> where T: Unpin,`

`impl<T: ?Sized> Unpin for PhantomData<T> where T: Unpin,`

`impl<T: ?Sized> Unpin for ManuallyDrop<T> where T: Unpin,`

`impl<T: ?Sized> Unpin for NonNull<T>`

`impl<Y, R> Unpin for GeneratorState<Y, R> where R: Unpin, Y: Unpin,`

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1.33.0[−][src]Trait core::marker::Unpin

Implementors

impl !Unpin for PhantomPinned[src]

impl Unpin for Waker[src]

impl<'a, T: ?Sized + 'a> Unpin for &'a T[src]

impl<'a, T: ?Sized + 'a> Unpin for &'a mut T[src]

impl<F> Unpin for PollFn<F>[src]

impl<T> Unpin for Pending<T>[src]

impl<T> Unpin for Ready<T>[src]

impl<T: ?Sized> Unpin for *const T[src]

impl<T: ?Sized> Unpin for *mut T[src]

Auto implementors

impl Unpin for core::cmp::Ordering

impl Unpin for Infallible

impl Unpin for c_void

impl Unpin for Alignment

impl Unpin for FpCategory

impl Unpin for IntErrorKind

impl Unpin for SearchStep

impl Unpin for core::sync::atomic::Ordering

impl Unpin for AllocError

impl Unpin for Layout

impl Unpin for LayoutError

impl Unpin for TypeId

impl Unpin for float64x1_t

impl Unpin for float64x2_t

impl Unpin for int8x16x2_t

impl Unpin for int8x16x3_t

impl Unpin for int8x16x4_t

impl Unpin for poly8x16x2_t

impl Unpin for poly8x16x3_t

impl Unpin for poly8x16x4_t

impl Unpin for uint8x16x2_t

impl Unpin for uint8x16x3_t

impl Unpin for uint8x16x4_t

impl Unpin for APSR

impl Unpin for SY

impl Unpin for float32x2_t

impl Unpin for float32x4_t

impl Unpin for int8x8_t

impl Unpin for int8x8x2_t

impl Unpin for int8x8x3_t

impl Unpin for int8x8x4_t

impl Unpin for int8x16_t

impl Unpin for int16x4_t

impl Unpin for int16x8_t

impl Unpin for int32x2_t

impl Unpin for int32x4_t

impl Unpin for int64x1_t

impl Unpin for int64x2_t

impl Unpin for poly8x8_t

impl Unpin for poly8x8x2_t

impl Unpin for poly8x8x3_t

impl Unpin for poly8x8x4_t

impl Unpin for poly8x16_t

impl Unpin for poly16x4_t

impl Unpin for poly16x8_t

impl Unpin for poly64x1_t

impl Unpin for poly64x2_t

impl Unpin for uint8x8_t

impl Unpin for uint8x8x2_t

impl Unpin for uint8x8x3_t

impl Unpin for uint8x8x4_t

impl Unpin for uint8x16_t

impl Unpin for uint16x4_t

impl Unpin for uint16x8_t

impl Unpin for uint32x2_t

impl Unpin for uint32x4_t

impl Unpin for uint64x1_t

impl Unpin for uint64x2_t

impl Unpin for vector_bool_long

impl Unpin for vector_double

impl Unpin for vector_signed_long

impl Unpin for vector_unsigned_long

impl Unpin for v128

impl Unpin for CpuidResult

impl Unpin for __m128

impl Unpin for __m128d

impl Unpin for __m128i

impl Unpin for __m256