- added few frontend classes

- updated others from backend

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@330 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/simulation.cc

@@ -0,0 +1,180 @@
+// src/backend/simulation.cc - Copyright 2005, 2006, University
+//               of Padova, dept. of Pure and Applied
+//               Mathematics
+//
+// This file is part of SGPEMv2.
+//
+// This is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// SGPEMv2 is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with SGPEMv2; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+#include "simulation.hh"
+
+using namespace std;
+using namespace sgpem;
+using namespace memory;
+using Glib::usleep;
+
+Simulation::Simulation(): _state(state_paused), _mode(false), _timer_interval(1000)
+{
+}
+
+void 
+Simulation::set_timer(const int& t)
+{
+	_timer_interval = t;
+}
+
+int 
+Simulation::get_timer() const
+{
+	return _timer_interval;
+}
+
+void 	
+Simulation::set_mode(const bool& b)
+{
+	_mode = b;
+}
+
+bool
+Simulation::get_mode() const
+{
+	return _mode;
+}
+
+void
+Simulation::pause()
+{
+	_state = state_paused;
+}
+
+void
+Simulation::stop()
+{
+	_state = state_stopped;
+}
+
+void
+Simulation::reset()
+{
+	_state = state_paused;
+	History::get_instance().truncate_at(0);
+}
+
+void
+Simulation::run()
+{
+	History& h = History::get_instance();
+	
+	if (_state == state_stopped)
+		h.truncate_at(0);	
+	
+	_state = state_running;
+	
+	//*******  CONTINUOUS TIME
+	if (_mode)
+	{	
+	loop:			
+		// chech for termination
+		bool all_term = true;
+		smart_ptr<const SchedulableList> left = h.get_simulation_status_at(h.get_current_time());
+		for(uint i = 0; i < left->size(); i++)
+			if (left->get_item_at(i)->get_state() != SchedulableStatus::state_terminated)
+			{
+				all_term = true;
+				break;
+			}
+		
+		//if there are no processes left the termination message has already been notified
+		//by the last execution of upadate()
+		if (all_term)
+		{
+			_state = state_paused;
+			return;
+		}
+		
+		//step forward
+		Scheduler::get_instance().step_forward();
+		
+		//sleep
+		Glib::usleep(_timer_interval*1000);
+		
+		//check the state
+		if (_state == state_stopped || _state == state_paused)
+			return;
+		
+		goto loop;		
+	}
+	
+	//******* STEP by STEP
+	else
+	{				
+		// chech for termination
+		bool all_term = true;
+		smart_ptr<const SchedulableList> left = h.get_simulation_status_at(h.get_current_time());
+		for(uint i = 0; i < left->size(); i++)
+			if (left->get_item_at(i)->get_state() != SchedulableStatus::state_terminated)
+		{
+			all_term = true;
+			break;
+		}
+		
+		if (all_term)
+			//if there are no processes left the termination message has already been notified
+			//by the last execution of upadate()
+			_state = state_paused;
+		else
+			//step forward
+			Scheduler::get_instance().step_forward();		
+	}
+	
+}
+
+
+void
+Simulation::jump_to(const uint& where)
+{
+	//jump to position 0
+	reset();
+	bool old = _mode;
+	_mode = false;
+	
+	// executes "where" steps
+	for (uint i=0; i < where; i++)
+		run();
+	
+	_state = state_paused;
+	_mode = old;
+}
+
+void
+Simulation::set_policy(Policy* p)
+{
+	Scheduler::get_instance().set_policy(p);
+}
+
+
+Policy*
+Simulation::get_policy()
+{
+	return Scheduler::get_instance().get_policy();
+}
+
+vector<Policy*>
+Simulation::get_avaiable_policies()
+{
+	vector<Policy*> v;
+	v.push_back(Scheduler::get_instance().get_policy());
+	return v;
+}