diff options
Diffstat (limited to 'rust/kernel/sync')
| -rw-r--r-- | rust/kernel/sync/set_once.rs | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/rust/kernel/sync/set_once.rs b/rust/kernel/sync/set_once.rs index bdba601807d8..139cef05e935 100644 --- a/rust/kernel/sync/set_once.rs +++ b/rust/kernel/sync/set_once.rs @@ -123,3 +123,11 @@ impl<T> Drop for SetOnce<T> { } } } + +// SAFETY: `SetOnce` can be transferred across thread boundaries iff the data it contains can. +unsafe impl<T: Send> Send for SetOnce<T> {} + +// SAFETY: `SetOnce` synchronises access to the inner value via atomic operations, +// so shared references are safe when `T: Sync`. Since the inner `T` may be dropped +// on any thread, we also require `T: Send`. +unsafe impl<T: Send + Sync> Sync for SetOnce<T> {} |