pub unsafe auto trait Send { }
Expand description
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.
NonNull pointers are not Send because the data they reference may be aliased.
impl<'_, K, V, S, A> Send for OccupiedEntry<'_, K, V, S, A> where
K: Send,
V: Send,
S: Send,
A: Send + Allocator + Clone,
impl<'a, T> Send for frame_support::dispatch::result::Iter<'a, T> where
T: Sync,
impl<'a, T> Send for frame_support::dispatch::result::IterMut<'a, T> where
T: Send,
impl<A, B, OnDrop, OppositeOnDrop> Send for frame_support::traits::tokens::fungibles::Imbalance<A, B, OnDrop, OppositeOnDrop> where
A: Send,
B: Send,
OnDrop: Send,
OppositeOnDrop: Send,
impl<B, OnDrop, OppositeOnDrop> Send for frame_support::traits::tokens::fungible::Imbalance<B, OnDrop, OppositeOnDrop> where
B: Send,
OnDrop: Send,
OppositeOnDrop: Send,
impl<Balance, Imbalance, Part1, Target1, Part2, Target2> Send for SplitTwoWays<Balance, Imbalance, Part1, Target1, Part2, Target2> where
Balance: Send,
Imbalance: Send,
Part1: Send,
Part2: Send,
Target1: Send,
Target2: Send,
impl<F, A, AccountId> Send for frame_support::traits::tokens::fungible::ItemOf<F, A, AccountId> where
A: Send,
AccountId: Send,
F: Send,
impl<F, A, AccountId> Send for frame_support::traits::tokens::nonfungible::ItemOf<F, A, AccountId> where
A: Send,
AccountId: Send,
F: Send,
impl<Hasher, KeyType> Send for Key<Hasher, KeyType> where
Hasher: Send,
KeyType: Send,
impl<Prefix, Hasher1, Key1, Hasher2, Key2, Value, QueryKind, OnEmpty, MaxValues> Send for StorageDoubleMap<Prefix, Hasher1, Key1, Hasher2, Key2, Value, QueryKind, OnEmpty, MaxValues> where
Hasher1: Send,
Hasher2: Send,
Key1: Send,
Key2: Send,
MaxValues: Send,
OnEmpty: Send,
Prefix: Send,
QueryKind: Send,
Value: Send,
impl<Prefix, Hasher, Key, Value, QueryKind, OnEmpty, MaxValues> Send for CountedStorageMap<Prefix, Hasher, Key, Value, QueryKind, OnEmpty, MaxValues> where
Hasher: Send,
Key: Send,
MaxValues: Send,
OnEmpty: Send,
Prefix: Send,
QueryKind: Send,
Value: Send,
impl<Prefix, Hasher, Key, Value, QueryKind, OnEmpty, MaxValues> Send for StorageMap<Prefix, Hasher, Key, Value, QueryKind, OnEmpty, MaxValues> where
Hasher: Send,
Key: Send,
MaxValues: Send,
OnEmpty: Send,
Prefix: Send,
QueryKind: Send,
Value: Send,
impl<Prefix, Key, Value, QueryKind, OnEmpty, MaxValues> Send for StorageNMap<Prefix, Key, Value, QueryKind, OnEmpty, MaxValues> where
Key: Send,
MaxValues: Send,
OnEmpty: Send,
Prefix: Send,
QueryKind: Send,
Value: Send,
impl<Prefix, Value, QueryKind, OnEmpty> Send for StorageValue<Prefix, Value, QueryKind, OnEmpty> where
OnEmpty: Send,
Prefix: Send,
QueryKind: Send,
Value: Send,