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

aman/AMAN.py

@@ -34,6 +34,10 @@ class AMAN:
         self.workers = []
         self.inbounds = {}
 
+    def __del__(self):
+        self.release()
+
+    def aquire(self):
         configPath = AMAN.findConfigPath()
 
         # read all system relevant configuration files
@@ -48,7 +52,8 @@ class AMAN:
         else:
             print('Parsed PerformanceData.ini. Extracted ' + str(len(self.aircraftPerformance.aircrafts)) + ' aircrafts')
 
-        self.weather = Weather(self.systemConfig.Weather)
+        self.weather = Weather()
+        self.weather.acquire(self.systemConfig.Weather)
 
         # find the airport configurations and create the workers
         airportsPath = os.path.join(os.path.join(configPath, 'airports'), '*.ini')
@@ -59,24 +64,28 @@ class AMAN:
             airportConfig = Airport(file, icao)
 
             # initialize the worker thread
-            worker = Worker(icao, airportConfig)
-            worker.start()
+            worker = Worker()
+            worker.acquire(icao, airportConfig)
             self.workers.append(worker)
             print('Starter worker for ' + icao)
 
         # create the EuroScope receiver
-        self.receiver = Euroscope(configPath, self.systemConfig.Server, self)
+        self.receiver = Euroscope()
+        self.receiver.acquire(configPath, self.systemConfig.Server, self)
 
-    def __del__(self):
+    def release(self):
         if None != self.receiver:
-            del self.receiver
+            self.receiver.release()
         self.receiver = None
+
         if None != self.weather:
-            del self.weather
+            self.weather.release()
         self.weather = None
 
-        for worker in self.workers:
-            worker.stop()
+        if None != self.workers:
+            for worker in self.workers:
+                worker.release()
+        self.workers = None
 
     def updateAircraftReport(self, report : AircraftReport_pb2.AircraftReport):
         # find the correct worker for the inbound