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Add [Raw]ReentrantMutex::is_owned #280

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merged 1 commit into from Feb 25, 2021
Merged

Add [Raw]ReentrantMutex::is_owned #280

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13 changes: 13 additions & 0 deletions lock_api/src/remutex.rs
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Expand Up @@ -135,6 +135,13 @@ impl<R: RawMutex, G: GetThreadId> RawReentrantMutex<R, G> {
pub fn is_locked(&self) -> bool {
self.mutex.is_locked()
}

/// Checks whether the mutex is currently held by the current thread.
#[inline]
pub fn is_owned_by_current_thread(&self) -> bool {
let id = self.get_thread_id.nonzero_thread_id().get();
self.owner.load(Ordering::Relaxed) == id
}
}

impl<R: RawMutexFair, G: GetThreadId> RawReentrantMutex<R, G> {
Expand Down Expand Up @@ -333,6 +340,12 @@ impl<R: RawMutex, G: GetThreadId, T: ?Sized> ReentrantMutex<R, G, T> {
self.raw.is_locked()
}

/// Checks whether the mutex is currently held by the current thread.
#[inline]
pub fn is_owned_by_current_thread(&self) -> bool {
self.raw.is_owned_by_current_thread()
}

/// Forcibly unlocks the mutex.
///
/// This is useful when combined with `mem::forget` to hold a lock without
Expand Down