diff options
Diffstat (limited to 'src/libstd')
| -rw-r--r-- | src/libstd/sync/rwlock.rs | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/libstd/sync/rwlock.rs b/src/libstd/sync/rwlock.rs index 5555f364e6e..d59a0b65a69 100644 --- a/src/libstd/sync/rwlock.rs +++ b/src/libstd/sync/rwlock.rs @@ -10,7 +10,6 @@ use cell::UnsafeCell; use fmt; -use marker; use mem; use ops::{Deref, DerefMut}; use ptr; @@ -102,7 +101,10 @@ pub struct RwLockReadGuard<'a, T: ?Sized + 'a> { } #[stable(feature = "rust1", since = "1.0.0")] -impl<'a, T: ?Sized> !marker::Send for RwLockReadGuard<'a, T> {} +impl<'a, T: ?Sized> !Send for RwLockReadGuard<'a, T> {} + +#[stable(feature = "rwlock_guard_sync", since = "1.23.0")] +unsafe impl<'a, T: ?Sized + Sync> Sync for RwLockReadGuard<'a, T> {} /// RAII structure used to release the exclusive write access of a lock when /// dropped. @@ -121,7 +123,10 @@ pub struct RwLockWriteGuard<'a, T: ?Sized + 'a> { } #[stable(feature = "rust1", since = "1.0.0")] -impl<'a, T: ?Sized> !marker::Send for RwLockWriteGuard<'a, T> {} +impl<'a, T: ?Sized> !Send for RwLockWriteGuard<'a, T> {} + +#[stable(feature = "rwlock_guard_sync", since = "1.23.0")] +unsafe impl<'a, T: ?Sized + Sync> Sync for RwLockWriteGuard<'a, T> {} impl<T> RwLock<T> { /// Creates a new instance of an `RwLock<T>` which is unlocked. |