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

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

Types that can be safely moved after being pinned.

Since Rust itself has no notion of immovable types, and considers moves (e.g., through assignment or mem::replace) to always be safe, this trait cannot prevent types from moving by itself.

Instead it is used to prevent moves through the type system, by controlling the behavior of pointers P wrapped in the Pin wrapper, which "pin" the type in place by not allowing it to be moved out of them. See the pin module documentation for more information on pinning.

Implementing this trait lifts the restrictions of pinning off a type, which then allows it to move out 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 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<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 AllocErr`

`impl Unpin for CannotReallocInPlace`

`impl Unpin for Excess`

`impl Unpin for Layout`

`impl Unpin for LayoutErr`

`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 poly64x1_t`

`impl Unpin for poly64x2_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 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 int8x16_t`

`impl Unpin for int8x8_t`

`impl Unpin for int8x8x2_t`

`impl Unpin for int8x8x3_t`

`impl Unpin for int8x8x4_t`

`impl Unpin for poly16x4_t`

`impl Unpin for poly16x8_t`

`impl Unpin for poly8x16_t`

`impl Unpin for poly8x8_t`

`impl Unpin for poly8x8x2_t`

`impl Unpin for poly8x8x3_t`

`impl Unpin for poly8x8x4_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 uint8x16_t`

`impl Unpin for uint8x8_t`

`impl Unpin for uint8x8x2_t`

`impl Unpin for uint8x8x3_t`

`impl Unpin for uint8x8x4_t`

`impl Unpin for v16i8`

`impl Unpin for v16u8`

`impl Unpin for v2f64`

`impl Unpin for v2i64`

`impl Unpin for v2u64`

`impl Unpin for v4f32`

`impl Unpin for v4i32`

`impl Unpin for v4u32`

`impl Unpin for v8i16`

`impl Unpin for v8u16`

`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 __m64`

`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 UnicodeVersion`

`impl Unpin for Error`

`impl Unpin for SipHasher`

`impl Unpin for NonZeroI128`

`impl Unpin for NonZeroI16`

`impl Unpin for NonZeroI32`

`impl Unpin for NonZeroI64`

`impl Unpin for NonZeroI8`

`impl Unpin for NonZeroIsize`

`impl Unpin for NonZeroU128`

`impl Unpin for NonZeroU16`

`impl Unpin for NonZeroU32`

`impl Unpin for NonZeroU64`

`impl Unpin for NonZeroU8`

`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 AtomicI16`

`impl Unpin for AtomicI32`

`impl Unpin for AtomicI64`

`impl Unpin for AtomicI8`

`impl Unpin for AtomicIsize`

`impl Unpin for AtomicU16`

`impl Unpin for AtomicU32`

`impl Unpin for AtomicU64`

`impl Unpin for AtomicU8`

`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 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<'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<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 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 Discriminant<T>`

`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: ?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<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 AllocErr

impl Unpin for CannotReallocInPlace

impl Unpin for Excess

impl Unpin for Layout

impl Unpin for LayoutErr

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 poly64x1_t

impl Unpin for poly64x2_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 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 int8x16_t

impl Unpin for int8x8_t

impl Unpin for int8x8x2_t

impl Unpin for int8x8x3_t

impl Unpin for int8x8x4_t

impl Unpin for poly16x4_t

impl Unpin for poly16x8_t

impl Unpin for poly8x16_t

impl Unpin for poly8x8_t

impl Unpin for poly8x8x2_t

impl Unpin for poly8x8x3_t

impl Unpin for poly8x8x4_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 uint8x16_t

impl Unpin for uint8x8_t

impl Unpin for uint8x8x2_t

impl Unpin for uint8x8x3_t

impl Unpin for uint8x8x4_t

impl Unpin for v16i8

impl Unpin for v16u8

impl Unpin for v2f64

impl Unpin for v2i64

impl Unpin for v2u64

impl Unpin for v4f32

impl Unpin for v4i32

impl Unpin for v4u32

impl Unpin for v8i16

impl Unpin for v8u16

impl Unpin for vector_bool_long