diff options
Diffstat (limited to 'src/rwlock')
| -rw-r--r-- | src/rwlock/write_lock.rs | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/src/rwlock/write_lock.rs b/src/rwlock/write_lock.rs index 8501cd8..2cf73cd 100644 --- a/src/rwlock/write_lock.rs +++ b/src/rwlock/write_lock.rs @@ -11,7 +11,9 @@ impl<'l, T: ?Sized + Debug, R: RawRwLock> Debug for WriteLock<'l, T, R> { // safety: this is just a try lock, and the value is dropped // immediately after, so there's no risk of blocking ourselves // or any other threads - if let Some(value) = unsafe { self.try_lock_no_key() } { + // It makes zero sense to try using an exclusive lock for this, so this + // is the only time when WriteLock does a read. + if let Some(value) = unsafe { self.0.try_read_no_key() } { f.debug_struct("WriteLock").field("data", &&*value).finish() } else { struct LockedPlaceholder; @@ -75,11 +77,8 @@ impl<'l, T: ?Sized, R: RawRwLock> WriteLock<'l, T, R> { self.0.try_write(key) } - /// Attempts to create an exclusive lock without a key. Locking this - /// without exclusive access to the key is undefined behavior. - pub(crate) unsafe fn try_lock_no_key(&self) -> Option<RwLockWriteRef<'_, T, R>> { - self.0.try_write_no_key() - } + // There's no `try_lock_no_key`. Instead, `try_read_no_key` is called on + // the referenced `RwLock`. /// Immediately drops the guard, and consequently releases the exclusive /// lock. |