- Temporarily disabled template-based singleton system because of a crash virtually surely caused by it

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@648 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/global_preferences.cc

@@ -23,6 +23,8 @@
 
 using namespace sgpem;
 
+GlobalPreferences* GlobalPreferences::_instance = NULL;
+
 GlobalPreferences::GlobalPreferences()
     : _mod_dirs(1, PLUGDIR), _pol_dirs(1, POLDIR)
 {}
@@ -69,3 +71,10 @@ GlobalPreferences::add_policies_dir(const Glib::ustring& poldir)
     _pol_dirs.insert(_pol_dirs.begin(), poldir);
 }
 
+GlobalPreferences&
+GlobalPreferences::get_instance()
+{
+  if(_instance == NULL)
+    _instance = new GlobalPreferences();
+  return *_instance;
+}

src/backend/global_preferences.hh

@@ -35,7 +35,7 @@ namespace sgpem {
 #include "config.h"
 
 namespace sgpem {
-  class SG_DLLEXPORT GlobalPreferences : public Singleton<GlobalPreferences>
+  class SG_DLLEXPORT GlobalPreferences /*: public Singleton<GlobalPreferences>*/
   {
     friend class Singleton<GlobalPreferences>;
 
@@ -51,14 +51,18 @@ namespace sgpem {
 	void add_modules_dir(const Glib::ustring& moddir);
 	void add_policies_dir(const Glib::ustring& poldir);
 
+	static GlobalPreferences& get_instance();
+
     private:
 	GlobalPreferences();
 	GlobalPreferences(const GlobalPreferences&);
 	GlobalPreferences& operator=(const GlobalPreferences&);
 	
-	std::vector<Glib::ustring> _mod_dirs;
-	std::vector<Glib::ustring> _pol_dirs;
-    };
+	std::vector<Glib::ustring>  _mod_dirs;
+	std::vector<Glib::ustring>  _pol_dirs;
+
+	static GlobalPreferences*   _instance;
+    };                                                                         
 }
 
 #endif

src/backend/history.cc

@@ -23,6 +23,8 @@ using namespace std;
 using namespace sgpem;
 using namespace memory;
 
+History* History::_instance = NULL;
+
 /**
 	The constructor sets _total_time_elapsed to -1: this permits to insert the INITIAL STATUS
 	of the simulation which must begin at instant -1 and live for 1 instant.
@@ -133,6 +135,12 @@ History::truncate_at(int instant)
 	notify();
 }
 
-
+History&
+History::get_instance()
+{
+  if(_instance == NULL)
+    _instance = new History();
+  return *_instance;
+}
 
 

src/backend/history.hh

@@ -49,7 +49,7 @@ namespace sgpem
   */
   class History;
 	
-  class SG_DLLEXPORT History : public Singleton<History>, public ObservedSubject 
+  class SG_DLLEXPORT History : /*public Singleton<History>,*/ public ObservedSubject 
   {
     friend class Singleton<History>;
 
@@ -85,6 +85,8 @@ namespace sgpem
 	 \param instant Desired cutting time.
 	 */	
 	virtual void	truncate_at(int instant);
+
+	static History&	get_instance();
 	
 		
   protected:
@@ -95,6 +97,7 @@ namespace sgpem
   private:
 	int             _total_time_elapsed;
 	std::vector<sgpem::Slice>	_slices;
+	static History*	_instance;
   };
 	
 }//~ namespace sgpem

src/backend/policies_gatekeeper.cc

@@ -34,6 +34,8 @@ using namespace sgpem;
 typedef vector<PolicyManager*>::iterator ManagerIterator;
 typedef map<History*, Policy*>::iterator ActiveIterator;
 
+PoliciesGatekeeper* PoliciesGatekeeper::_instance = NULL;
+
 vector<PolicyManager*>
 PoliciesGatekeeper::get_registered() const
 {
@@ -128,4 +130,12 @@ PoliciesGatekeeper::deactivate_policies(PolicyManager* manager)
     }
   }
 }
-    
+
+PoliciesGatekeeper&
+PoliciesGatekeeper::get_instance()
+{
+  if(_instance == NULL)
+    _instance = new PoliciesGatekeeper();
+  return *_instance;
+}
+   

src/backend/policies_gatekeeper.hh

@@ -45,7 +45,7 @@ namespace sgpem
 
    */
 
-  class SG_DLLEXPORT PoliciesGatekeeper : public Singleton<PoliciesGatekeeper>
+  class SG_DLLEXPORT PoliciesGatekeeper /*: public Singleton<PoliciesGatekeeper>*/
   {
     friend class Singleton<PoliciesGatekeeper>;
 
@@ -59,6 +59,8 @@ namespace sgpem
     Policy*			    get_current_policy(History* history) throw(std::runtime_error);
 
     void			    activate_policy(History* history, Policy* policy);
+
+    static PoliciesGatekeeper&	    get_instance();
     
   private:
     PoliciesGatekeeper();	    //private constructor.
@@ -70,8 +72,9 @@ namespace sgpem
     
     std::vector<PolicyManager*>	    _registered;
     std::map<History*, Policy*>	    _active_policies;
+    static PoliciesGatekeeper*	    _instance;
   };
-
+  
 }//~ namespace sgpem
 
 #endif //POLICIES_GATEKEEPER_HH

src/backend/scheduler.cc

@@ -29,6 +29,8 @@ using namespace std;
 using namespace sgpem;
 using namespace memory;
 
+Scheduler* Scheduler::_instance = NULL;
+
 //private constructor. The parameter is discarded
 Scheduler::Scheduler()
   : _policy_manager(PolicyManager::get_registered_manager())
@@ -205,3 +207,10 @@ Scheduler::step_forward() throw(UserInterruptException)
     }
 }
 
+Scheduler&
+Scheduler::get_instance()
+{
+  if(_instance == NULL)
+    _instance = new Scheduler();
+  return *_instance;
+}

src/backend/scheduler.hh

@@ -54,7 +54,7 @@ namespace sgpem
 	
   */
 
-  class SG_DLLEXPORT Scheduler : public Singleton<Scheduler>
+  class SG_DLLEXPORT Scheduler /*: public Singleton<Scheduler>*/
   {
     friend class Singleton<Scheduler>;
   public:
@@ -86,13 +86,16 @@ namespace sgpem
        Returns the policy that will be used to generate the simulation at the next instant.
        \return the policy that will be used to generate the simulation at the next instant.
     */
-    Policy& 					get_policy();
+    Policy& 					get_policy();   
+
+    static Scheduler&				get_instance();
 				
 		
   private:
     Scheduler();					//private constructor.
     SchedulableQueue		_ready_queue;
     PolicyManager& 		_policy_manager;
+    static Scheduler*		_instance;
   };
 
 }//~ namespace sgpem