Move the lock method to list.rs and rename it to try_lock

src/lib.rs

@@ -165,7 +165,7 @@ struct Inner {
     /// The number of notified entries, or `usize::MAX` if all of them have been notified.
     ///
     /// If there are no entries, this value is set to `usize::MAX`.
-    pub(crate) notified: AtomicUsize,
+    notified: AtomicUsize,
 
     /// Inner queue of event listeners.
     list: list::List,
@@ -179,14 +179,6 @@ impl Inner {
             list: list::List::new(),
         }
     }
-
-    /// Locks the list.
-    pub(crate) fn lock(&self) -> Option<list::ListGuard<'_>> {
-        self.list.inner.try_lock().map(|guard| list::ListGuard {
-            inner: self,
-            guard: Some(guard),
-        })
-    }
 }
 
 /// A synchronization primitive for notifying async tasks and threads.

src/list.rs

@@ -14,6 +14,14 @@ use core::ops;
 use slab::Slab;
 
 impl crate::Inner {
+    /// Locks the list.
+    fn lock(&self) -> Option<ListGuard<'_>> {
+        self.list.inner.try_lock().map(|guard| ListGuard {
+            inner: self,
+            guard: Some(guard),
+        })
+    }
+
     /// Add a new listener to the list.
     ///
     /// Does nothing if the list is already registered.