# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1463062194 -7200
# Node ID 236701c67ebc3f88134b2ef9c35287f017fec4c0
# Parent  8fb731c8db48e80eff4b899de1c12cc8623b1c6c
Remove any active locks if an exception is raised during retraction.

diff -r 8fb731c8db48 -r 236701c67ebc imiptools/handlers/scheduling/__init__.py
--- a/imiptools/handlers/scheduling/__init__.py	Wed May 11 15:59:28 2016 +0200
+++ b/imiptools/handlers/scheduling/__init__.py	Thu May 12 16:09:54 2016 +0200
@@ -102,15 +102,17 @@
     # First, lock the resources to be used.
 
     start_scheduling(handler)
-
-    # Obtain the actual retraction functions with arguments.
+    try:
 
-    functions = get_function_calls(handler.get_scheduling_functions(), retraction_functions)
-    apply_functions(functions, handler)
+        # Obtain the actual retraction functions with arguments.
+
+        functions = get_function_calls(handler.get_scheduling_functions(), retraction_functions)
+        apply_functions(functions, handler)
 
     # Finally, unlock the resources.
 
-    finish_scheduling(handler)
+    finally:
+        finish_scheduling(handler)
 
 def start_scheduling(handler):