- 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>;
 
@@ -51,13 +51,17 @@ 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;
     };                                                                         
 }
 

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>;
 
@@ -86,6 +86,8 @@ namespace sgpem
 	 */	
 	virtual void	truncate_at(int instant);
 
+	static History&	get_instance();
+	
 		
   protected:
 	History();			//private constructor.
@@ -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
 {
@@ -129,3 +131,11 @@ 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>;
 
@@ -60,6 +60,8 @@ namespace sgpem
 
     void			    activate_policy(History* history, Policy* policy);
 
+    static PoliciesGatekeeper&	    get_instance();
+    
   private:
     PoliciesGatekeeper();	    //private constructor.
     PoliciesGatekeeper(const PoliciesGatekeeper&);
@@ -70,6 +72,7 @@ namespace sgpem
     
     std::vector<PolicyManager*>	    _registered;
     std::map<History*, Policy*>	    _active_policies;
+    static PoliciesGatekeeper*	    _instance;
   };
   
 }//~ namespace sgpem

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:
@@ -88,11 +88,14 @@ namespace sgpem
     */
     Policy& 					get_policy();   
 
+    static Scheduler&				get_instance();
+				
 		
   private:
     Scheduler();					//private constructor.
     SchedulableQueue		_ready_queue;
     PolicyManager& 		_policy_manager;
+    static Scheduler*		_instance;
   };
 
 }//~ namespace sgpem