bt2: make _ListenerHandle not hold a strong reference on the target object

[babeltrace.git] / src / bindings / python / bt2 / bt2 / utils.py

diff --git a/src/bindings/python/bt2/bt2/utils.py b/src/bindings/python/bt2/bt2/utils.py
index a3df357ee47d2184cb82d7a8d070f154c4583250..67017cd021aa637d2df664919220471b5ab70962 100644 (file)
--- a/src/bindings/python/bt2/bt2/utils.py
+++ b/src/bindings/python/bt2/bt2/utils.py
@@ -156,16 +156,22 @@ def _handle_func_status(status, msg=None):
             raise bt2._OverflowError
         else:
             raise bt2._OverflowError(msg)
-    elif status == native_bt.__BT_FUNC_STATUS_INVALID_OBJECT:
+    elif status == native_bt.__BT_FUNC_STATUS_UNKNOWN_OBJECT:
         if msg is None:
-            raise bt2.InvalidObject
+            raise bt2.UnknownObject
         else:
-            raise bt2.InvalidObject(msg)
+            raise bt2.UnknownObject(msg)
     else:
         assert False
 
 
 class _ListenerHandle:
-    def __init__(self, listener_id, obj):
+    def __init__(self, addr):
+        self._addr = addr
+        self._listener_id = None
+
+    def _set_listener_id(self, listener_id):
         self._listener_id = listener_id
-        self._obj = obj
+
+    def _invalidate(self):
+        self._listener_id = None