Implemented Modelverse Garbage Collection again (quite efficiently)

hybrid_server/classes/mvkcontroller.xml

@@ -313,6 +313,10 @@
                                 self.execute_modelverse("", "protect_temporary_variables", [])
                                 self.mvs.purge()
                                 self.execute_modelverse("", "unprotect_temporary_variables", [])
+
+                                # Clean up all used memory now, as this is rather much due to the copy of the MvS
+                                import gc
+                                gc.collect()
                             </script>
                             <raise scope="broad" event="resume_task"/>
                         </onentry>

state/modelverse_state/main.py

@@ -374,8 +374,8 @@ class ModelverseState(object):
             self.to_delete.add(t)
 
     def purge(self):
-        print("PURGE")
-        #return
+        initial_nodes = len(self.nodes)
+        initial_edges = len(self.edges)
 
         while self.to_delete:
             t = self.to_delete.pop()

wrappers/modelverse_SCCD.py

@@ -1,7 +1,7 @@
 """
 Generated by Statechart compiler by Glenn De Jonghe, Joeri Exelmans, Simon Van Mierlo, and Yentl Van Tendeloo (for the inspiration)
 
-Date:   Tue May 22 11:16:00 2018
+Date:   Tue May 22 11:57:59 2018
 
 Model author: Yentl Van Tendeloo
 Model name:   MvK Server