Lines Matching defs:refcount

22 /// 1. Request is owned by block layer (refcount 0).
24 ///    (refcount 1).
26 ///    (refcount 2).
28 ///    (refcount > 2).
40 /// The states are tracked through the private `refcount` field of
51 ///   `self.wrapper_ref().refcount()`.
63     /// * The caller must own a refcount on `ptr` that is transferred to the
84     /// `self.wrapper_ref().refcount() == 2`.
91     /// Try to take exclusive ownership of `this` by dropping the refcount to 0.
101         // To hand back the ownership, we need the current refcount to be 2.
103         // refcount to 0. `Refcount` does not provide a way to do this, so use the underlying
107             .refcount()
152             // SAFETY: We released a refcount above that we can reclaim here.
191     /// The Rust request refcount has the following states:
196     refcount: Refcount,
200     /// Return a reference to the refcount of the request that is embedding
202     pub(crate) fn refcount(&self) -> &Refcount {
203         &self.refcount
206     /// Return a pointer to the refcount of the request that is embedding the
215         unsafe { &raw mut (*this).refcount }
234         self.wrapper_ref().refcount().inc();
243         let refcount = unsafe { &*RequestDataWrapper::refcount_ptr(wrapper_ptr) };
246         let is_zero = refcount.dec_and_test();
250             panic!("Request reached refcount zero in Rust abstractions");