- Add exception checking to ConcreteSimulation::jump_to()

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@1054 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/concrete_simulation.cc

@@ -72,12 +72,11 @@ ConcreteSimulation::jump_to(History::position p) throw(UserInterruptException, N
   }
 
   // Disable momentarily updates for registered observers on 
-  // sgpem::Simulation too.
+  // sgpem::Simulation and sgpem::History.
-  set_notify_enabled(false);
+  bool his_enabled = _history.set_notify_enabled(false);
-	pause();
+  bool sim_enabled = set_notify_enabled(false);
 
-  // Disable updates to registered observers
+	pause();
-  _history.set_notify_enabled(false);
 
 	bool yet_to_finish = true;
   History::position increment = 0;
@@ -88,10 +87,12 @@ ConcreteSimulation::jump_to(History::position p) throw(UserInterruptException, N
         yet_to_finish = step();
         increment++;
       }
-    catch(...)
+    catch(const CPUPolicyException&)
       {
-        // FIXME: manage exceptions! Lookout that notifications
+        // Lookout that notifications have to be re-enabled.
-        // have to be re-enabled.
+        _history.set_notify_enabled(his_enabled);
+        set_notify_enabled(sim_enabled);
+        throw;
       }
   }
   get_history().set_front(std::min(p, _history.get_size()));
@@ -100,11 +101,11 @@ ConcreteSimulation::jump_to(History::position p) throw(UserInterruptException, N
 
   // Reenables updates to registered observers. 
   // Calls _history.notify_change() on reactivation.
-  _history.set_notify_enabled(true);
+  _history.set_notify_enabled(his_enabled);
 
   // Do the same for notifications on the state
   // of Simulation
-  set_notify_enabled(true);
+  set_notify_enabled(sim_enabled);
 }
 
 

src/backend/sgpemv2/simulation.hh

@@ -179,6 +179,7 @@ namespace sgpem
      * \return The old value
      */
     virtual bool  set_notify_enabled(bool enabled = true);
+    bool          is_notify_enabled() const;
 
   protected:
     typedef std::vector<SimulationObserver*> RegisteredObservers;

src/backend/simulation.cc

@@ -88,3 +88,9 @@ Simulation::set_notify_enabled(bool enabled)
 
   return old_value;
 }
+
+bool
+Simulation::is_notify_enabled() const
+{
+  return _notify;
+}