bt2: make it possible to remove a trace class or trace destruction listener

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

diff --git a/src/bindings/python/bt2/bt2/trace_class.py b/src/bindings/python/bt2/bt2/trace_class.py
index e3162915e2ec944281bc9b06c77ebe4f277b92d1..9146efacb927b7389857ae189ed7baf8ba18ea57 100644 (file)
--- a/src/bindings/python/bt2/bt2/trace_class.py
+++ b/src/bindings/python/bt2/bt2/trace_class.py
@@ -26,7 +26,6 @@ from bt2 import native_bt, utils, object
 from bt2 import stream_class as bt2_stream_class
 from bt2 import field_class as bt2_field_class
 from bt2 import trace as bt2_trace
-from bt2 import trace_class as bt2_trace_class
 from bt2 import value as bt2_value
 import collections.abc
 import functools
@@ -112,6 +111,25 @@ class _TraceClassConst(object._SharedObject, collections.abc.Mapping):
 
         return utils._ListenerHandle(listener_id, self)
 
+    def remove_destruction_listener(self, listener_handle):
+        utils._check_type(listener_handle, utils._ListenerHandle)
+
+        if listener_handle._obj.addr != self.addr:
+            raise ValueError(
+                'This trace class destruction listener does not match the trace object.'
+            )
+
+        if listener_handle._listener_id is None:
+            raise ValueError(
+                'This trace class destruction listener was already removed.'
+            )
+
+        status = native_bt.trace_class_remove_destruction_listener(
+            self._ptr, listener_handle._listener_id
+        )
+        utils._handle_func_status(status)
+        listener_handle._listener_id = None
+
 
 class _TraceClass(_TraceClassConst):
     _borrow_stream_class_ptr_by_index = staticmethod(