3 //! Generic kernel lock and guard.
5 //! It contains a generic Rust lock and guard that allow for different backends (e.g., mutexes,
124     pub fn lock(&self) -> Guard<'_, T, B> {  in lock()
129         unsafe { Guard::new(self, state) }  in lock()
133 /// A lock guard.
136 /// when a guard goes out of scope. It also provides a safe and convenient way to access the data
138 #[must_use = "the lock unlocks immediately when the guard is unused"]
139 pub struct Guard<'a, T: ?Sized, B: Backend> {  struct
145 // SAFETY: `Guard` is sync when the data protected by the lock is also sync.  argument
146 unsafe impl<T: Sync + ?Sized, B: Backend> Sync for Guard<'_, T, B> {}  implementation
148 impl<T: ?Sized, B: Backend> Guard<'_, T, B> {  impl
161 impl<T: ?Sized, B: Backend> core::ops::Deref for Guard<'_, T, B> {  implementation
170 impl<T: ?Sized, B: Backend> core::ops::DerefMut for Guard<'_, T, B> {  implementation
177 impl<T: ?Sized, B: Backend> Drop for Guard<'_, T, B> {  implementation
184 impl<'a, T: ?Sized, B: Backend> Guard<'a, T, B> {  implementation
185     /// Constructs a new immutable lock guard.