[PATCH BlueZ] test/example-advertisement: add shutdown code

["Hunt, Preston" <preston.hunt@xxxxxxxxx>]

The previous sample code did not release all resources when shutting
down. This is fine when it's a standalone program since Python will free
all resources automatically when the process terminates. However, in a
long-running process, this will eventually cause problems.

This changeset shows how to properly release all resources.
---
 test/example-advertisement | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/test/example-advertisement b/test/example-advertisement
index fd84eac..1db61d6 100755
--- a/test/example-advertisement
+++ b/test/example-advertisement
@@ -6,15 +6,13 @@ import dbus
 import dbus.exceptions
 import dbus.mainloop.glib
 import dbus.service
-
-import array
+import time
+import threading
 
 try:
-  from gi.repository import GObject  # python3
+    from gi.repository import GObject  # python3
 except ImportError:
-  import gobject as GObject  # python2
-
-from random import randint
+    import gobject as GObject  # python2
 
 mainloop = None
 
@@ -136,6 +134,7 @@ class Advertisement(dbus.service.Object):
     def Release(self):
         print('%s: Released!' % self.path)
 
+
 class TestAdvertisement(Advertisement):
 
     def __init__(self, bus, index):
@@ -170,6 +169,12 @@ def find_adapter(bus):
     return None
 
 
+def shutdown():
+    print('Advertising for 10 seconds...')
+    time.sleep(10)
+    mainloop.quit()
+
+
 def main():
     global mainloop
 
@@ -183,7 +188,7 @@ def main():
         return
 
     adapter_props = dbus.Interface(bus.get_object(BLUEZ_SERVICE_NAME, adapter),
-                                   "org.freedesktop.DBus.Properties");
+                                   "org.freedesktop.DBus.Properties")
 
     adapter_props.Set("org.bluez.Adapter1", "Powered", dbus.Boolean(1))
 
@@ -198,7 +203,13 @@ def main():
                                      reply_handler=register_ad_cb,
                                      error_handler=register_ad_error_cb)
 
+    threading.Thread(target=shutdown).start()
+
     mainloop.run()
 
+    ad_manager.UnregisterAdvertisement(test_advertisement)
+    print('Advertisement unregistered')
+    dbus.service.Object.remove_from_connection(test_advertisement)
+
 if __name__ == '__main__':
     main()
-- 
2.7.4