# Trait std::marker::Sync 1.0.0 [−] [src]

    #[lang = "sync"]
    pub unsafe auto trait Sync { }

Types for which it is safe to share references between threads.

This trait is automatically implemented when the compiler determines it's appropriate.

The precise definition is: a type `T` is `Sync` if `&T` is `Send`. In other words, if there is no possibility of undefined behavior (including data races) when passing `&T` references between threads.

As one would expect, primitive types like `u8` and `f64` are all `Sync`, and so are simple aggregate types containing them, like tuples, structs and enums. More examples of basic `Sync` types include "immutable" types like `&T`, and those with simple inherited mutability, such as `Box<T>`, `Vec<T>` and most other collection types. (Generic parameters need to be `Sync` for their container to be `Sync`.)

A somewhat surprising consequence of the definition is that `&mut T` is `Sync` (if `T` is `Sync`) even though it seems like that might provide unsynchronized mutation. The trick is that a mutable reference behind a shared reference (that is, `& &mut T`) becomes read-only, as if it were a `& &T`. Hence there is no risk of a data race.

Types that are not `Sync` are those that have "interior mutability" in a non-thread-safe form, such as `cell::Cell` and `cell::RefCell`. These types allow for mutation of their contents even through an immutable, shared reference. For example the `set` method on `Cell<T>` takes `&self`, so it requires only a shared reference `&Cell<T>`. The method performs no synchronization, thus `Cell` cannot be `Sync`.

Another example of a non-`Sync` type is the reference-counting pointer `rc::Rc`. Given any reference `&Rc<T>`, you can clone a new `Rc<T>`, modifying the reference counts in a non-atomic way.

For cases when one does need thread-safe interior mutability, Rust provides atomic data types, as well as explicit locking via `sync::Mutex` and `sync::RwLock`. These types ensure that any mutation cannot cause data races, hence the types are `Sync`. Likewise, `sync::Arc` provides a thread-safe analogue of `Rc`.

Any types with interior mutability must also use the `cell::UnsafeCell` wrapper around the value(s) which can be mutated through a shared reference. Failing to doing this is undefined behavior. For example, `transmute`-ing from `&T` to `&mut T` is invalid.

See the Nomicon for more details about `Sync`.

## Implementations on Foreign Types

### `impl Sync for Argument`

### `impl Sync for FormatSpec`

### `impl Sync for Alignment`

### `impl Sync for Count`

### `impl Sync for Position`

## Implementors

- [src]
  `impl Sync for AtomicU32`
- [src]
  `impl Sync for AtomicI32`
- [src]
  `impl<T> !Sync for NonNull<T> where
  T: ?Sized,`
- [src]
  `impl<T> !Sync for Cell<T>`
- [src]
  `impl<'a, T> Sync for std::slice::Iter<'a, T> where
  T: Sync,`
- [src]
  `impl Sync for AtomicBool`
- [src]
  `impl Sync for AtomicU64`
- [src]
  `impl<T> !Sync for UnsafeCell<T> where
  T: ?Sized,`
- [src]
  `impl<T> !Sync for *const T where
  T: ?Sized,`
- [src]
  `impl Sync for AtomicU16`
- [src]
  `impl Sync for AtomicI64`
- [src]
  `impl<T> Sync for Unique<T> where
  T: Sync + ?Sized,`
- [src]
  `impl Sync for AtomicIsize`
- [src]
  `impl Sync for AtomicUsize`
- [src]
  `impl Sync for AtomicI8`
- [src]
  `impl<T> Sync for AtomicPtr<T>`
- [src]
  `impl<T> !Sync for *mut T where
  T: ?Sized,`
- [src]
  `impl<'a, T> Sync for std::slice::IterMut<'a, T> where
  T: Sync,`
- [src]
  `impl Sync for AtomicI16`
- [src]
  `impl<T> !Sync for RefCell<T> where
  T: ?Sized,`
- [src]
  `impl Sync for AtomicU8`
- [src]
  `impl<T> Sync for Arc<T> where
  T: Send + Sync + ?Sized,`
- [src]
  `impl<T> Sync for std::vec::IntoIter<T> where
  T: Sync,`
- [src]
  `impl<T> !Sync for std::rc::Weak<T> where
  T: ?Sized,`
- [src]
  `impl<'a, T> Sync for std::collections::linked_list::IterMut<'a, T> where
  T: Sync,`
- [src]
  `impl<T> Sync for std::sync::Weak<T> where
  T: Send + Sync + ?Sized,`
- [src]
  `impl<'a, T> Sync for std::collections::linked_list::Iter<'a, T> where
  T: Sync,`
- [src]
  `impl<T> Sync for LinkedList<T> where
  T: Sync,`
- [src]
  `impl<'a> Sync for std::string::Drain<'a>`
- [src]
  `impl<'a, T> Sync for std::collections::vec_deque::Drain<'a, T> where
  T: Sync,`
- [src]
  `impl<'a, T> Sync for std::vec::Drain<'a, T> where
  T: Sync,`
- [src]
  `impl<T> !Sync for Rc<T> where
  T: ?Sized,`
- [src]
  `impl !Sync for Args`
- [src]
  `impl !Sync for ArgsOs`
- [src]
  `impl<T> !Sync for Receiver<T>`
- [src]
  `impl<T> !Sync for Sender<T>`
- [src]
  `impl<T: ?Sized + Send> Sync for Mutex<T>`
- [src]
  `impl<'a, T: ?Sized + Sync> Sync for MutexGuard<'a, T>`
- [src]
  `impl Sync for std::sync::Once`
- [src]
  `impl<T: ?Sized + Send + Sync> Sync for RwLock<T>`
- [src]
  `impl<'a, T: ?Sized + Sync> Sync for RwLockReadGuard<'a, T>`
- [src]
  `impl<'a, T: ?Sized + Sync> Sync for RwLockWriteGuard<'a, T>`

## Auto implementors

- `impl Sync for TypeId`
- `impl Sync for BorrowError`
- `impl Sync for BorrowMutError`
- `impl<'b, T> !Sync for Ref<'b, T>`
- `impl<'b, T> !Sync for RefMut<'b, T>`
- `impl Sync for std::cmp::Ordering`
- `impl<T> Sync for Reverse<T> where
  T: Sync,`
- `impl Sync for Infallible`
- `impl<H> Sync for BuildHasherDefault<H> where
  H: Sync,`
- `impl Sync for SipHasher13`
- `impl Sync for SipHasher`
- `impl Sync for SipHasher24`
- `impl<T> Sync for Rev<T> where
  T: Sync,`
- `impl<I> Sync for Cloned<I> where
  I: Sync,`
- `impl<I> Sync for Cycle<I> where
  I: Sync,`
- `impl<I> Sync for StepBy<I> where
  I: Sync,`
- `impl<A, B> Sync for std::iter::Chain<A, B> where
  A: Sync,
  B: Sync,`
- `impl<A, B> Sync for Zip<A, B> where
  A: Sync,
  B: Sync,`
- `impl<I, F> Sync for Map<I, F> where
  F: Sync,
  I: Sync,`
- `impl<I, P> Sync for Filter<I, P> where
  I: Sync,
  P: Sync,`
- `impl<I, F> Sync for FilterMap<I, F> where
  F: Sync,
  I: Sync,`
- `impl<I> Sync for Enumerate<I> where
  I: Sync,`
- `impl<I> Sync for Peekable<I> where
  I: Sync,
  <I as Iterator>::Item: Sync,`
- `impl<I, P> Sync for SkipWhile<I, P> where
  I: Sync,
  P: Sync,`
- `impl<I, P> Sync for TakeWhile<I, P> where
  I: Sync,
  P: Sync,`
- `impl<I> Sync for Skip<I> where
  I: Sync,`
- `impl<I> Sync for std::iter::Take<I> where
  I: Sync,`
- `impl<I, St, F> Sync for Scan<I, St, F> where
  F: Sync,
  I: Sync,
  St: Sync,`
- `impl<I, U, F> Sync for FlatMap<I, U, F> where
  F: Sync,
  I: Sync,
  <U as IntoIterator>::IntoIter: Sync,`
- `impl<I> Sync for Fuse<I> where
  I: Sync,`
- `impl<I, F> Sync for Inspect<I, F> where
  F: Sync,
  I: Sync,`
- `impl<F> Sync for RepeatWith<F> where
  F: Sync,`
- `impl<T> Sync for std::iter::Empty<T> where
  T: Sync,`
- `impl<T> Sync for std::iter::Once<T> where
  T: Sync,`
- `impl<A> Sync for std::iter::Repeat<A> where
  A: Sync,`
- `impl<T: ?Sized> Sync for PhantomData<T> where
  T: Sync,`
- `impl<T> Sync for Discriminant<T>`
- `impl<T> Sync for ManuallyDrop<T> where
  T: Sync,`
- `impl<Idx> Sync for RangeFrom<Idx> where
  Idx: Sync,`
- `impl<Idx> Sync for std::ops::Range<Idx> where
  Idx: Sync,`
- `impl<Idx> Sync for RangeToInclusive<Idx> where
  Idx: Sync,`
- `impl<Idx> Sync for RangeTo<Idx> where
  Idx: Sync,`
- `impl<Idx> Sync for RangeInclusive<Idx> where
  Idx: Sync,`
- `impl Sync for RangeFull`
- `impl<Y, R> Sync for GeneratorState<Y, R> where
  R: Sync,
  Y: Sync,`
- `impl !Sync for TraitObject`
- `impl<T, E> Sync for Result<T, E> where
  E: Sync,
  T: Sync,`
- `impl<'a, T> Sync for std::result::Iter<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for std::result::IterMut<'a, T> where
  T: Sync,`
- `impl<T> Sync for std::result::IntoIter<T> where
  T: Sync,`
- `impl<T> Sync for Option<T> where
  T: Sync,`
- `impl<'a, A> Sync for std::option::Iter<'a, A> where
  A: Sync,`
- `impl<'a, A> Sync for std::option::IterMut<'a, A> where
  A: Sync,`
- `impl<A> Sync for std::option::IntoIter<A> where
  A: Sync,`
- `impl Sync for NoneError`
- `impl Sync for ExchangeHeapSingleton`
- `impl<T: ?Sized> Sync for Box<T> where
  T: Sync,`
- `impl<T> !Sync for IntermediateBox<T>`
- `impl<'a, B: ?Sized> Sync for Cow<'a, B> where
  B: Sync,
  <B as ToOwned>::Owned: Sync,`
- `impl<'a, 'b> !Sync for DebugMap<'a, 'b>`
- `impl<'a, 'b> !Sync for DebugStruct<'a, 'b>`
- `impl<'a> !Sync for Formatter<'a>`
- `impl<'a, 'b> !Sync for DebugList<'a, 'b>`
- `impl<'a, 'b> !Sync for DebugSet<'a, 'b>`
- `impl<'a, 'b> !Sync for DebugTuple<'a, 'b>`
- `impl Sync for std::fmt::Error`
- `impl<'a> !Sync for Arguments<'a>`
- `impl<'a, T, P> Sync for std::slice::Split<'a, T, P> where
  P: Sync,
  T: Sync,`
- `impl<'a, T, P> Sync for RSplitNMut<'a, T, P> where
  P: Sync,
  T: Sync,`
- `impl<'a, T, P> Sync for std::slice::SplitN<'a, T, P> where
  P: Sync,
  T: Sync,`
- `impl<'a, T, P> Sync for SplitNMut<'a, T, P> where
  P: Sync,
  T: Sync,`
- `impl<'a, T> Sync for ChunksMut<'a, T> where
  T: Sync,`
- `impl<'a, T, P> Sync for RSplitMut<'a, T, P> where
  P: Sync,
  T: Sync,`
- `impl<'a, T, P> Sync for std::slice::RSplitN<'a, T, P> where
  P: Sync,
  T: Sync,`
- `impl<'a, T, P> Sync for SplitMut<'a, T, P> where
  P: Sync,
  T: Sync,`
- `impl<'a, T, P> Sync for std::slice::RSplit<'a, T, P> where
  P: Sync,
  T: Sync,`
- `impl<'a, T> Sync for ExactChunksMut<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for Windows<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for ExactChunks<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for Chunks<'a, T> where
  T: Sync,`
- `impl<'a> Sync for EncodeUtf16<'a>`
- `impl<'a, P> Sync for std::str::Split<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl Sync for SearchStep`
- `impl<'a> Sync for CharSearcher<'a>`
- `impl<'a, 'b> Sync for CharSliceSearcher<'a, 'b>`
- `impl<'a, F> Sync for CharPredicateSearcher<'a, F> where
  F: Sync,`
- `impl<'a, 'b> Sync for StrSearcher<'a, 'b>`
- `impl<'a, P> Sync for std::str::SplitN<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl Sync for Utf8Error`
- `impl<'a> Sync for CharIndices<'a>`
- `impl Sync for ParseBoolError`
- `impl<'a, P> Sync for RSplitTerminator<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl<'a> Sync for std::str::Chars<'a>`
- `impl<'a, P> Sync for RMatchIndices<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl<'a, P> Sync for std::str::RSplitN<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl<'a, P> Sync for SplitTerminator<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl<'a, P> Sync for MatchIndices<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl<'a, P> Sync for std::str::RSplit<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl<'a, P> Sync for RMatches<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl<'a, P> Sync for Matches<'a, P> where
  <P as Pattern<'a>>::Searcher: Sync,`
- `impl<'a> Sync for LinesAny<'a>`
- `impl<'a> Sync for std::str::Bytes<'a>`
- `impl<'a> Sync for SplitWhitespace<'a>`
- `impl<'a> Sync for std::str::Lines<'a>`
- `impl Sync for String`
- `impl Sync for FromUtf8Error`
- `impl Sync for FromUtf16Error`
- `impl Sync for ParseError`
- `impl<T> Sync for Vec<T> where
  T: Sync,`
- `impl<'a, T> Sync for std::vec::PlaceBack<'a, T> where
  T: Sync,`
- `impl<'a, I> Sync for Splice<'a, I> where
  I: Sync,
  <I as Iterator>::Item: Sync,`
- `impl<'a, T, F> Sync for std::vec::DrainFilter<'a, T, F> where
  F: Sync,
  T: Sync,`
- `impl Sync for ToLowercase`
- `impl Sync for ToUppercase`
- `impl<I> Sync for DecodeUtf16<I> where
  I: Sync,`
- `impl Sync for DecodeUtf16Error`
- `impl<I> Sync for DecodeUtf8<I> where
  I: Sync,`
- `impl Sync for std::char::EscapeDefault`
- `impl Sync for ParseCharError`
- `impl Sync for EscapeDebug`
- `impl Sync for CharTryFromError`
- `impl Sync for EscapeUnicode`
- `impl Sync for UnicodeVersion`
- `impl<T> Sync for LocalKey<T>`
- `impl Sync for AccessError`
- `impl Sync for Builder`
- `impl Sync for ThreadId`
- `impl Sync for Thread`
- `impl<T> Sync for JoinHandle<T> where
  T: Sync,`
- `impl Sync for LocalKeyState`
- `impl Sync for std::ascii::EscapeDefault`
- `impl<T> Sync for Bound<T> where
  T: Sync,`
- `impl<T> Sync for BinaryHeap<T> where
  T: Sync,`
- `impl<K, V> Sync for BTreeMap<K, V> where
  K: Sync,
  V: Sync,`
- `impl<T> Sync for BTreeSet<T> where
  T: Sync,`
- `impl<T> Sync for VecDeque<T> where
  T: Sync,`
- `impl<'a, T> Sync for PeekMut<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::binary_heap::Iter<'a, T> where
  T: Sync,`
- `impl<T> Sync for std::collections::binary_heap::IntoIter<T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::binary_heap::Drain<'a, T> where
  T: Sync,`
- `impl<'a, T> !Sync for BinaryHeapPlace<'a, T>`
- `impl<'a, K, V> Sync for std::collections::btree_map::Values<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<K, V> Sync for std::collections::btree_map::IntoIter<K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::btree_map::Entry<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for RangeMut<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::btree_map::IterMut<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::btree_map::OccupiedEntry<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::btree_map::ValuesMut<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::btree_map::Range<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::btree_map::VacantEntry<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::btree_map::Keys<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::btree_map::Iter<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<T> Sync for std::collections::btree_set::IntoIter<T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::btree_set::Union<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::btree_set::Range<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::btree_set::SymmetricDifference<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::btree_set::Difference<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::btree_set::Iter<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::btree_set::Intersection<'a, T> where
  T: Sync,`
- `impl<T> Sync for std::collections::linked_list::IntoIter<T> where
  T: Sync,`
- `impl<'a, T, F> !Sync for std::collections::linked_list::DrainFilter<'a, T, F>`
- `impl<'a, T> !Sync for FrontPlace<'a, T>`
- `impl<'a, T> !Sync for BackPlace<'a, T>`
- `impl<'a, T> Sync for std::collections::vec_deque::Iter<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::vec_deque::IterMut<'a, T> where
  T: Sync,`
- `impl<T> Sync for std::collections::vec_deque::IntoIter<T> where
  T: Sync,`
- `impl<'a, T> Sync for std::collections::vec_deque::PlaceBack<'a, T> where
  T: Sync,`
- `impl<'a, T> Sync for PlaceFront<'a, T> where
  T: Sync,`
- `impl<K, V, S> Sync for HashMap<K, V, S> where
  K: Sync,
  S: Sync,
  V: Sync,`
- `impl<T, S> Sync for HashSet<T, S> where
  S: Sync,
  T: Sync,`
- `impl<'a, K, V> Sync for std::collections::hash_map::Iter<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::hash_map::IterMut<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<K, V> Sync for std::collections::hash_map::IntoIter<K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::hash_map::Keys<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::hash_map::Values<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::hash_map::Drain<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> Sync for std::collections::hash_map::ValuesMut<'a, K, V> where
  K: Sync,
  V: Sync,`
- `impl<'a, K, V> !Sync for std::collections::hash_map::OccupiedEntry<'a, K, V>`
- `impl<'a, K, V> !Sync for std::collections::hash_map::VacantEntry<'a, K, V>`
- `impl<'a, K, V> !Sync for EntryPlace<'a, K, V>`
- `impl Sync for RandomState`
- `impl Sync for DefaultHasher`
- `impl<'a, K, V> !Sync for std::collections::hash_map::Entry<'a, K, V>`
- `impl<'a, K> Sync for std::collections::hash_set::Iter<'a, K> where
  K: Sync,`
- `impl<K> Sync for std::collections::hash_set::IntoIter<K> where
  K: Sync,`
- `impl<'a, K> Sync for std::collections::hash_set::Drain<'a, K> where
  K: Sync,`
- `impl<'a, T, S> Sync for std::collections::hash_set::Intersection<'a, T, S> where
  S: Sync,
  T: Sync,`
- `impl<'a, T, S> Sync for std::collections::hash_set::Difference<'a, T, S> where
  S: Sync,
  T: Sync,`
- `impl<'a, T, S> Sync for std::collections::hash_set::SymmetricDifference<'a, T, S> where
  S: Sync,
  T: Sync,`
- `impl<'a, T, S> Sync for std::collections::hash_set::Union<'a, T, S> where
  S: Sync,
  T: Sync,`
- `impl !Sync for Vars`
- `impl !Sync for VarsOs`
- `impl<'a> Sync for SplitPaths<'a>`
- `impl Sync for JoinPathsError`
- `impl Sync for VarError`
- `impl Sync for CString`
- `impl Sync for CStr`
- `impl Sync for NulError`
- `impl Sync for IntoStringError`
- `impl Sync for FromBytesWithNulError`
- `impl Sync for OsString`
- `impl Sync for OsStr`
- `impl Sync for File`
- `impl Sync for Metadata`
- `impl Sync for ReadDir`
- `impl Sync for DirEntry`
- `impl Sync for OpenOptions`
- `impl Sync for Permissions`
- `impl Sync for FileType`
- `impl Sync for DirBuilder`
- `impl<R> Sync for BufReader<R> where
  R: Sync,`
- `impl<W> Sync for BufWriter<W> where
  W: Sync,`
- `impl<W> Sync for LineWriter<W> where
  W: Sync,`
- `impl<W> Sync for IntoInnerError<W> where
  W: Sync,`
- `impl<T> Sync for Cursor<T> where
  T: Sync,`
- `impl Sync for std::io::Error`
- `impl Sync for Sink`
- `impl Sync for std::io::Empty`
- `impl Sync for std::io::Repeat`
- `impl Sync for Stdin`
- `impl Sync for Stdout`
- `impl Sync for Stderr`
- `impl<'a> Sync for StdoutLock<'a>`
- `impl<'a> Sync for StderrLock<'a>`
- `impl<'a> Sync for StdinLock<'a>`
- `impl Sync for Initializer`
- `impl<T, U> Sync for std::io::Chain<T, U> where
  T: Sync,
  U: Sync,`
- `impl<T> Sync for std::io::Take<T> where
  T: Sync,`
- `impl<R> Sync for std::io::Bytes<R> where
  R: Sync,`
- `impl<R> Sync for std::io::Chars<R> where
  R: Sync,`
- `impl<B> Sync for std::io::Split<B> where
  B: Sync,`
- `impl<B> Sync for std::io::Lines<B> where
  B: Sync,`
- `impl Sync for ErrorKind`
- `impl Sync for SeekFrom`
- `impl Sync for CharsError`
- `impl Sync for Ipv4Addr`
- `impl Sync for Ipv6Addr`
- `impl Sync for SocketAddrV4`
- `impl Sync for SocketAddrV6`
- `impl Sync for TcpStream`
- `impl Sync for TcpListener`
- `impl<'a> Sync for std::net::Incoming<'a>`
- `impl Sync for UdpSocket`
- `impl Sync for AddrParseError`
- `impl Sync for LookupHost`
- `impl Sync for IpAddr`
- `impl Sync for Ipv6MulticastScope`
- `impl Sync for std::net::SocketAddr`
- `impl Sync for Shutdown`
- `impl Sync for FpCategory`
- `impl Sync for ParseIntError`
- `impl Sync for ParseFloatError`
- `impl Sync for TryFromIntError`
- `impl<T> Sync for Wrapping<T> where
  T: Sync,`
- `impl Sync for std::os::unix::net::SocketAddr`
- `impl Sync for UnixStream`
- `impl Sync for UnixListener`
- `impl<'a> Sync for std::os::unix::net::Incoming<'a>`
- `impl Sync for UnixDatagram`
- `impl<'a> Sync for EncodeWide<'a>`
- `impl Sync for stat`
- `impl Sync for c_void`
- `impl<'a> !Sync for PanicInfo<'a>`
- `impl<'a> Sync for Location<'a>`
- `impl<T> Sync for AssertUnwindSafe<T> where
  T: Sync,`
- `impl<'a> Sync for PrefixComponent<'a>`
- `impl<'a> Sync for Components<'a>`
- `impl<'a> Sync for std::path::Iter<'a>`
- `impl Sync for PathBuf`
- `impl Sync for Path`
- `impl Sync for StripPrefixError`
- `impl<'a> Sync for Display<'a>`
- `impl<'a> Sync for Prefix<'a>`
- `impl<'a> Sync for Component<'a>`
- `impl Sync for Child`
- `impl Sync for ChildStdin`
- `impl Sync for ChildStdout`
- `impl Sync for ChildStderr`
- `impl !Sync for Command`
- `impl Sync for Output`
- `impl Sync for Stdio`
- `impl Sync for ExitStatus`
- `impl Sync for std::sync::atomic::Ordering`
- `impl Sync for Barrier`
- `impl Sync for BarrierWaitResult`
- `impl Sync for Condvar`
- `impl Sync for WaitTimeoutResult`
- `impl Sync for OnceState`
- `impl<T> Sync for PoisonError<T> where
  T: Sync,`
- `impl<T> Sync for TryLockError<T> where
  T: Sync,`
- `impl !Sync for Select`
- `impl<'rx, T> !Sync for Handle<'rx, T>`
- `impl<'a, T> !Sync for std::sync::mpsc::Iter<'a, T>`
- `impl<'a, T> !Sync for TryIter<'a, T>`
- `impl<T> !Sync for std::sync::mpsc::IntoIter<T>`
- `impl<T> Sync for SyncSender<T> where
  T: Send,`
- `impl<T> Sync for SendError<T> where
  T: Sync,`
- `impl Sync for RecvError`
- `impl Sync for TryRecvError`
- `impl Sync for RecvTimeoutError`
- `impl<T> Sync for TrySendError<T> where
  T: Sync,`
- `impl Sync for Duration`
- `impl Sync for Instant`
- `impl Sync for SystemTime`
- `impl Sync for SystemTimeError`
- `impl Sync for Heap`
- `impl Sync for Layout`
- `impl !Sync for Excess`
- `impl Sync for CannotReallocInPlace`
- `impl Sync for AllocErr`
- `impl Sync for System`

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