32     /// The current stamp.
33     stamp: AtomicUsize,  field
45     /// Stamp to store into the slot after reading or writing.
46     stamp: usize,  field
54             stamp: 0,  in default()
63     /// This value is a "stamp" consisting of an index into the buffer, a mark bit, and a lap, but
72     /// This value is a "stamp" consisting of an index into the buffer, a mark bit, and a lap, but
85     /// A stamp with the value of `{ lap: 1, mark: 0, index: 0 }`.
120                     // Set the stamp to `{ lap: 0, mark: 0, index: i }`.  in with_capacity()
122                         stamp: AtomicUsize::new(i),  in with_capacity()
164                 token.array.stamp = 0;  in start_send()
174             let stamp = slot.stamp.load(Ordering::Acquire);  in start_send()  localVariable
176             // If the tail and the stamp match, we may attempt to push.  in start_send()
177             if tail == stamp {  in start_send()
198                         token.array.stamp = tail + 1;  in start_send()
206             } else if stamp.wrapping_add(self.one_lap) == tail + 1 {  in start_send()
219                 // Snooze because we need to wait for the stamp to get updated.  in start_send()
235         // Write the message into the slot and update the stamp.  in write()
237         slot.stamp.store(token.array.stamp, Ordering::Release);  in write()
256             let stamp = slot.stamp.load(Ordering::Acquire);  in start_recv()  localVariable
258             // If the the stamp is ahead of the head by 1, we may attempt to pop.  in start_recv()
259             if head + 1 == stamp {  in start_recv()
280                         token.array.stamp = head.wrapping_add(self.one_lap);  in start_recv()
288             } else if stamp == head {  in start_recv()
298                         token.array.stamp = 0;  in start_recv()
309                 // Snooze because we need to wait for the stamp to get updated.  in start_recv()
325         // Read the message from the slot and update the stamp.  in read()
327         slot.stamp.store(token.array.stamp, Ordering::Release);  in read()