diff options
Diffstat (limited to 'src/key.rs')
| -rw-r--r-- | src/key.rs | 11 |
1 files changed, 4 insertions, 7 deletions
@@ -6,9 +6,10 @@ use once_cell::sync::Lazy; use thread_local::ThreadLocal; use self::sealed::Sealed; +use super::ThreadKey; mod sealed { - use super::ThreadKey; + use crate::ThreadKey; pub trait Sealed {} impl Sealed for ThreadKey {} impl Sealed for &mut ThreadKey {} @@ -16,12 +17,7 @@ mod sealed { static KEY: Lazy<ThreadLocal<AtomicLock>> = Lazy::new(ThreadLocal::new); -/// The key for the current thread. -/// -/// Only one of these exist per thread. To get the current thread's key, call -/// [`ThreadKey::lock`]. If the `ThreadKey` is dropped, it can be reobtained. -pub type ThreadKey = Key<'static>; - +/// A key that can be obtained and dropped pub struct Key<'a> { phantom: PhantomData<*const ()>, // implement !Send and !Sync lock: &'a AtomicLock, @@ -85,6 +81,7 @@ impl AtomicLock { /// /// This is not a fair lock. It is not recommended to call this function /// repeatedly in a loop. + #[must_use] pub fn try_lock(&self) -> Option<Key> { // safety: we just acquired the lock (!self.is_locked.swap(true, Ordering::Acquire)).then_some(Key { |