Trait std::marker::Send 1.0.0
[−]
[src]
pub unsafe 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 for Rc<T> where
T: ?Sized,impl<'a, T> Send for std::collections::linked_list::Iter<'a, T> where
T: Sync,impl<T> Send for std::sync::Weak<T> where
T: Send + Sync + ?Sized,impl<'a, T> Send for std::collections::vec_deque::Drain<'a, T> where
T: Send,impl<T> !Send for std::rc::Weak<T> where
T: ?Sized,impl<T> Send for LinkedList<T> where
T: Send,impl<'a> Send for std::string::Drain<'a>impl<T> Send for Arc<T> where
T: Send + Sync + ?Sized,impl<'a, T> Send for std::vec::Drain<'a, T> where
T: Send,impl<'a, T> Send for std::collections::linked_list::IterMut<'a, T> where
T: Send,impl<T> Send for IntoIter<T> where
T: Send,impl<'a, T> Send for &'a T where
T: Sync + ?Sized,impl<T> Send for Unique<T> where
T: Send + ?Sized,impl<T> !Send for Shared<T> where
T: ?Sized,impl<'a, T> Send for std::slice::Iter<'a, T> where
T: Sync,impl<'a, T> Send for &'a mut T where
T: Send + ?Sized,impl<T> !Send for *mut T where
T: ?Sized,impl<'a, T> Send for std::slice::IterMut<'a, T> where
T: Send,impl<T> Send for RefCell<T> where
T: Send + ?Sized,impl<T> Send for Cell<T> where
T: Send,impl<T> Send for AtomicPtr<T>impl<T> !Send for *const T where
T: ?Sized,impl !Send for Selectimpl<T: Send> Send for Receiver<T>impl<T: Send> Send for Sender<T>impl<T: Send> Send for SyncSender<T>impl<T: ?Sized + Send> Send for Mutex<T>impl<'a, T: ?Sized> !Send for MutexGuard<'a, T>impl Send for Onceimpl<T: ?Sized + Send> Send for RwLock<T>impl<'a, T: ?Sized> !Send for RwLockReadGuard<'a, T>impl<'a, T: ?Sized> !Send for RwLockWriteGuard<'a, T>