fix: daemonize process queue threads so we get clean close even if si…

…gnals are missed.

software/control/core/core.py

@@ -234,7 +234,7 @@ def __init__(self, image_format=Acquisition.IMAGE_FORMAT):
         self.queue = Queue(10)  # max 10 items in the queue
         self.image_lock = Lock()
         self.stop_signal_received = False
-        self.thread = Thread(target=self.process_queue)
+        self.thread = Thread(target=self.process_queue, daemon=True)
         self.thread.start()
         self.counter = 0
         self.recording_start_time = 0
@@ -324,7 +324,7 @@ def __init__(self, base_path, image_format="bmp"):
         self.queue = Queue(100)  # max 100 items in the queue
         self.image_lock = Lock()
         self.stop_signal_received = False
-        self.thread = Thread(target=self.process_queue)
+        self.thread = Thread(target=self.process_queue, daemon=True)
         self.thread.start()
 
     def process_queue(self):
@@ -381,7 +381,7 @@ def __init__(self):
         self.queue = Queue(10)  # max 10 items in the queue
         self.image_lock = Lock()
         self.stop_signal_received = False
-        self.thread = Thread(target=self.process_queue)
+        self.thread = Thread(target=self.process_queue, daemon=True)
         self.thread.start()
 
     def process_queue(self):