- Mega-update. Take it while it's hot... but my brain's frying!

- Fixed all Dynamic and Static entities lacking proper destructors:
Dynamic entities need to delete Dynamic children, Static entities
need only to delete them from the list of their siblings
- Added methods to get Static "core" from Dynamic*.
- Now get_core() is a pure virtual function into DynamicSchedulable.
A quite nice solution(?), really, if I can say that myself... ;-)
- ConcreteHistory is half-implemented. It's the other half that 
worries me.
- TODO: finish off ConcreteHistory, and check that things get destroyed
properly (no leaks allowed, use valgrind).
- TODO: rework Simulation
- TODO: Scheduler rewrite
- *A side note*: this code is becoming a mess. I prefer references over
pointers, but someone other prefer pointers over references, and what
happens is that you've to continously pass from one to another when
invoking other methods... this is bad.


git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@694 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/history.hh

@@ -58,6 +58,7 @@ namespace sgpem
   public:
 		typedef unsigned int                     size_t;
 		typedef unsigned int                     time_t;
+		typedef unsigned int                     position;
 		typedef int                              prio_t;
 
 		typedef Environment::resource_key_t      resource_key_t;
@@ -66,10 +67,10 @@ namespace sgpem
   	virtual ~History() = 0;
 		
 		virtual       size_t       get_size() = 0;
-		virtual const Environment& get_last_environment() const = 0;
+		virtual const Environment& get_last_environment(position index) const = 0;
 		virtual const Environment& get_environment_at() const throw(std::out_of_range) = 0;
 		
-		virtual void  remove(const Resource&   resource)   = 0;
+		virtual void  remove(resource_key_t resource_key)  = 0;
 		virtual void  remove(const Process&    process)    = 0;
 		virtual void  remove(const Thread&     thread)     = 0;
 		virtual void  remove(const Request&    request)    = 0;
@@ -87,6 +88,7 @@ namespace sgpem
 
 		virtual Thread&      add_thread(const Glib::ustring& name,
 																		Process& parent,
+																		time_t cpu_time,
 																		time_t arrival_time = 0,
 																		prio_t base_priority = 0) = 0;
 
@@ -106,7 +108,7 @@ namespace sgpem
 		typedef std::vector<HistoryObserver*> RegisteredObservers;
 		RegisteredObservers _observers;
 
-		virtual void notify_change() = 0;
+		virtual void notify_change();
 				
   }; //~ class History