redefined the API to avoid GC issues during the destruction of the AMAN and its children

aman/sys/Worker.py

@@ -6,18 +6,24 @@ import time
 from aman.config.Airport import Airport
 
 class Worker(Thread):
-    def __init__(self, icao : str, configuration : Airport):
+    def __init__(self):
         Thread.__init__(self)
 
+    def __del__(self):
+        self.release()
+
+    def acquire(self, icao : str, configuration : Airport):
         self.stopThread = None
         self.icao = icao
         self.configuration = configuration
         self.arrivalRoutes = configuration.gngData.arrivalRoutes
         self.updateLock = Lock()
         self.reportQueue = {}
+        self.start()
 
-    def stop(self):
+    def release(self):
         self.stopThread = True
+        self.join()
 
     def run(self):
         counter = 0