collect filenames after waiting for all tasks (in nuDIA the run number is needed for the filenames but is only available after sending out the request, which is only possible after the stop pid is through

slic/core/scanner/scanbackend.py

@@ -96,15 +96,17 @@ class ScanBackend:
 
     def acquire_all(self, filename):
         tasks = []
-        filenames = []
         for acq in self.acquisitions:
             t = acq.acquire(filename=filename, channels=self.channels, n_pulses=self.n_pulses_per_step)
             tasks.append(t)
-            filenames.extend(t.filenames)
 
         self.current_tasks = tasks
-
         wait_for_all(tasks)
+
+        filenames = []
+        for t in tasks:
+            filenames.extend(t.filenames)
+
         return filenames #TODO: returning this is weird