// src/backend/concrete_statistics.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 "concrete_statistics.hh"
#include <sgpemv2/simulation.hh>
#include <sgpemv2/history.hh>
#include <sgpemv2/environment.hh>
#include <sgpemv2/schedulable.hh>
#include <sgpemv2/process.hh>
#include <sgpemv2/thread.hh>
#include "concrete_thread_statistics.hh"
#include "concrete_process_statistics.hh"

#include <iostream>

using namespace sgpem;
using namespace std;

			
	
ConcreteStatistics::ConcreteStatistics(): _sim_stats(0)
{
	calculateStatisticsAt(-1);
}

void										
ConcreteStatistics::calculateStatisticsAt(const int& instant)
{
	//retrieve all processes
	vector<Process*> procs = Simulation::get_instance().get_history().get_environment_at(0).get_processes();
	
	//create all process statistics (which themselves create their thread statistics)
	_proc_stats.clear();
	for (unsigned int p = 0; p < procs.size(); p++)
		_proc_stats.push_back(ConcreteProcessStatistics(procs[p], instant));
	
	if (_sim_stats)
		delete _sim_stats;
	//create simulation statistics using just obtained process statistics
	_sim_stats = new ConcreteSimulationStatistics(_proc_stats, instant);	
}

const SimulationStatistics*
ConcreteStatistics::get_simulation_statistics() const
{
	return _sim_stats;
}

/**
	\warning Don't delete these pointers!!
	\warning These pointers are not valid anymore AFTER a call to calculateStatisticsAt
*/
std::vector<const ProcessStatistics*>
ConcreteStatistics::get_process_statistics() const
{
	vector<const ProcessStatistics*> rit;
	for (unsigned int i=0; i < _proc_stats.size(); i++)
		rit.push_back(&_proc_stats[i]);
	return rit;
}