Ensure sequence scan does not over-eat in send_next.

nion-software · Jan 29, 2024 · 64365c6 · 64365c6
1 parent 7e32fe6
commit 64365c6
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/nion/instrumentation/scan_base.py b/nion/instrumentation/scan_base.py
@@ -2175,7 +2175,9 @@ def _progress(self) -> float:
 
     def _send_next(self) -> typing.Sequence[Acquisition.DataStreamEventArgs]:
         data_stream_events = list[Acquisition.DataStreamEventArgs]()
-        while self.__scan_hardware_source.get_sequence_buffer_count() > 0 and self.__sent_count < self.__count and not self.__is_aborted:
+        start_time = time.time()
+        MAX_TIME = 0.1
+        while self.__scan_hardware_source.get_sequence_buffer_count() > 0 and self.__sent_count < self.__count and not self.__is_aborted and time.time() - start_time < MAX_TIME:
             buffer_data = self.__scan_hardware_source.pop_sequence_buffer_data(self.__scan_id)
             self.__sent_count += 1