diff --git a/a_sync/primitives/_debug.pxd b/a_sync/primitives/_debug.pxd
index 164ee3a4..cf77d705 100644
--- a/a_sync/primitives/_debug.pxd
+++ b/a_sync/primitives/_debug.pxd
@@ -7,3 +7,4 @@ cdef class _LoopBoundMixin(_LoggerMixin):
 
 cdef class _DebugDaemonMixin(_LoopBoundMixin):
     cdef object _daemon
+    cdef object _c_ensure_debug_daemon(self, tuple[object] args, dict[str, object] kwargs)
diff --git a/a_sync/primitives/_debug.pyx b/a_sync/primitives/_debug.pyx
index 7a00cb25..b94bfd98 100644
--- a/a_sync/primitives/_debug.pyx
+++ b/a_sync/primitives/_debug.pyx
@@ -153,6 +153,9 @@ cdef class _DebugDaemonMixin(_LoopBoundMixin):
         See Also:
             :meth:`_start_debug_daemon` for starting the daemon.
         """
+        return self._c_ensure_debug_daemon(args, kwargs)
+    
+    cdef object _c_ensure_debug_daemon(self, tuple[object] args, dict[str, object] kwargs):
         cdef object daemon = self._daemon
         if daemon is None:
             if self.check_debug_logs_enabled():
diff --git a/a_sync/primitives/locks/__init__.pxd b/a_sync/primitives/locks/__init__.pxd
index 045c7d34..45c78254 100644
--- a/a_sync/primitives/locks/__init__.pxd
+++ b/a_sync/primitives/locks/__init__.pxd
@@ -1,2 +1,8 @@
-from a_sync.primitives.locks.counter import CounterLock
-from a_sync.primitives.locks.event cimport CythonEvent as Event
\ No newline at end of file
+from a_sync.primitives.locks.counter cimport CounterLock
+from a_sync.primitives.locks.event cimport CythonEvent as Event
+from a_sync.primitives.locks.prio_semaphore cimport PrioritySemaphore
+from a_sync.primitives.locks.semaphore cimport (
+    DummySemaphore,
+    Semaphore,
+    ThreadsafeSemaphore,
+)
diff --git a/a_sync/primitives/locks/__init__.py b/a_sync/primitives/locks/__init__.py
index 1cbec00e..d51dfe89 100644
--- a/a_sync/primitives/locks/__init__.py
+++ b/a_sync/primitives/locks/__init__.py
@@ -1,8 +1,8 @@
 from a_sync.primitives.locks.counter import CounterLock
 from a_sync.primitives.locks.event import CythonEvent as Event
+from a_sync.primitives.locks.prio_semaphore import PrioritySemaphore
 from a_sync.primitives.locks.semaphore import (
     DummySemaphore,
     Semaphore,
     ThreadsafeSemaphore,
 )
-from a_sync.primitives.locks.prio_semaphore import PrioritySemaphore
diff --git a/a_sync/primitives/locks/counter.pyx b/a_sync/primitives/locks/counter.pyx
index 6e21ed71..b8c25b63 100644
--- a/a_sync/primitives/locks/counter.pyx
+++ b/a_sync/primitives/locks/counter.pyx
@@ -102,7 +102,7 @@ cdef class CounterLock(_DebugDaemonMixin):
             :meth:`CounterLock.set` to set the counter value.
         """
         if not self.is_ready(value):
-            self._ensure_debug_daemon()
+            self._c_ensure_debug_daemon((),{})
             await self._events[value].c_wait()
         return True
 
diff --git a/a_sync/primitives/locks/event.pyx b/a_sync/primitives/locks/event.pyx
index 43b50f73..4179b699 100644
--- a/a_sync/primitives/locks/event.pyx
+++ b/a_sync/primitives/locks/event.pyx
@@ -145,7 +145,7 @@ cdef class CythonEvent(_DebugDaemonMixin):
         if self._value:
             return _return_true()
 
-        self._ensure_debug_daemon()
+        self._c_ensure_debug_daemon((),{})
 
         cdef object fut = self._c_get_loop().create_future()
         self._waiters.append(fut)
diff --git a/a_sync/primitives/locks/prio_semaphore.pxd b/a_sync/primitives/locks/prio_semaphore.pxd
new file mode 100644
index 00000000..5b1cd10c
--- /dev/null
+++ b/a_sync/primitives/locks/prio_semaphore.pxd
@@ -0,0 +1,24 @@
+from a_sync.primitives.locks.semaphore cimport Semaphore
+
+cdef class _AbstractPrioritySemaphore(Semaphore):
+    cdef dict[object, _AbstractPrioritySemaphoreContextManager] _context_managers
+    cdef Py_ssize_t _capacity
+    cdef list _potential_lost_waiters
+    cdef object _top_priority
+    cdef object _context_manager_class
+    cdef list[_AbstractPrioritySemaphoreContextManager] __waiters
+    cdef object c_getitem(self, object priority)
+    cdef dict[object, int] _count_waiters(self)
+
+cdef class _AbstractPrioritySemaphoreContextManager(Semaphore):
+    cdef _AbstractPrioritySemaphore _parent
+    cdef object _priority
+    cdef str _priority_name
+    cpdef str _repr_no_parent_(self)
+    cdef str _c_repr_no_parent_(self)
+
+cdef class _PrioritySemaphoreContextManager(_AbstractPrioritySemaphoreContextManager):
+    pass
+
+cdef class PrioritySemaphore(_AbstractPrioritySemaphore):
+    pass
diff --git a/a_sync/primitives/locks/prio_semaphore.pyx b/a_sync/primitives/locks/prio_semaphore.pyx
index 4976647d..9bf7e44c 100644
--- a/a_sync/primitives/locks/prio_semaphore.pyx
+++ b/a_sync/primitives/locks/prio_semaphore.pyx
@@ -40,31 +40,6 @@ cdef class _AbstractPrioritySemaphore(Semaphore):
         :class:`PrioritySemaphore` for an implementation using numeric priorities.
     """
 
-    name: Optional[str]
-    cdef dict[object, _AbstractPrioritySemaphoreContextManager] _context_managers
-    cdef Py_ssize_t _capacity
-    cdef list _potential_lost_waiters
-    cdef object _top_priority
-    cdef object _context_manager_class
-    cdef list[_AbstractPrioritySemaphoreContextManager] __waiters
-
-    #@property
-    #def _context_manager_class(
-    #    self,
-    #) -> Type["_AbstractPrioritySemaphoreContextManager[PT]"]:
-    #    raise NotImplementedError
-
-    #@property
-    #def _top_priority(self) -> PT:
-    #    """Defines the top priority for the semaphore.
-    #
-    #    Subclasses must implement this property to specify the default top priority.
-    #
-    #    Raises:
-    #        NotImplementedError: If not implemented in a subclass.
-    #    """
-    #    raise NotImplementedError
-
     def __cinit__(self) -> None:
         self._context_managers = {}
         """A dictionary mapping priorities to their context managers."""
@@ -277,12 +252,6 @@ cdef class _AbstractPrioritySemaphoreContextManager(Semaphore):
     the acquisition and release of the semaphore for waiters with that priority.
     """
 
-    _loop: asyncio.AbstractEventLoop
-    __waiters: Deque[asyncio.Future]  # type: ignore [assignment]
-    cdef _AbstractPrioritySemaphore _parent
-    cdef object _priority
-    cdef str _priority_name
-
     def __init__(
         self,
         parent: _AbstractPrioritySemaphore,
@@ -358,12 +327,12 @@ cdef class _AbstractPrioritySemaphoreContextManager(Semaphore):
             >>> await context_manager.acquire()
         """
         if self._parent._Semaphore__value <= 0:
-            self._ensure_debug_daemon()
+            self._c_ensure_debug_daemon((),{})
         return self.__acquire()
     
     cdef object c_acquire(self):
         if self._parent._Semaphore__value <= 0:
-            self._ensure_debug_daemon()
+            self._c_ensure_debug_daemon((),{})
         return self.__acquire()
     
     async def __acquire(self) -> Literal[True]:
diff --git a/a_sync/primitives/locks/semaphore.pxd b/a_sync/primitives/locks/semaphore.pxd
index 49693a7d..6ac023cc 100644
--- a/a_sync/primitives/locks/semaphore.pxd
+++ b/a_sync/primitives/locks/semaphore.pxd
@@ -14,4 +14,11 @@ cdef class Semaphore(_DebugDaemonMixin):
     cdef void c_release(self)
     cpdef void _wake_up_next(self)
     cdef void _c_wake_up_next(self)
-            
\ No newline at end of file
+            
+cdef class DummySemaphore(Semaphore):
+    pass
+
+cdef class ThreadsafeSemaphore(Semaphore):
+    cdef object semaphores, dummy
+    cdef bint use_dummy
+    cdef Semaphore c_get_semaphore(self)
diff --git a/a_sync/primitives/locks/semaphore.pyx b/a_sync/primitives/locks/semaphore.pyx
index 48c93bad..f84a6f0a 100644
--- a/a_sync/primitives/locks/semaphore.pyx
+++ b/a_sync/primitives/locks/semaphore.pyx
@@ -166,7 +166,7 @@ cdef class Semaphore(_DebugDaemonMixin):
             True when the semaphore is successfully acquired.
         """
         if self.__value <= 0:
-            self._ensure_debug_daemon()
+            self._c_ensure_debug_daemon((),{})
 
         if not self.c_locked():
             self.__value -= 1
@@ -189,11 +189,11 @@ cdef class Semaphore(_DebugDaemonMixin):
         except asyncio.exceptions.CancelledError:
             if not fut.cancelled():
                 self.__value += 1
-                self._wake_up_next()
+                self._c_wake_up_next()
             raise
 
         if self.__value > 0:
-            self._wake_up_next()
+            self._c_wake_up_next()
 
         return True
 
@@ -204,11 +204,11 @@ cdef class Semaphore(_DebugDaemonMixin):
         become larger than zero again, wake up that coroutine.
         """
         self.__value += 1
-        self._wake_up_next()
+        self._c_wake_up_next()
     
     cdef void c_release(self):
         self.__value += 1
-        self._wake_up_next()
+        self._c_wake_up_next()
 
     @property
     def name(self) -> str:
@@ -350,9 +350,6 @@ cdef class ThreadsafeSemaphore(Semaphore):
         :class:`Semaphore` for the base class implementation.
     """
 
-    cdef object semaphores, dummy
-    cdef bint use_dummy
-
     def __init__(self, value: Optional[int], name: Optional[str] = None) -> None:
         """
         Initialize the threadsafe semaphore with a given value and optional name.