sgpemv2/src/backend/scheduler.hh

78 lines
1.7 KiB
C++

// src/backend/scheduler.hh - 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
#ifndef SCHEDULER_HH
#define SCHEDULER_HH 1
namespace sgpem
{
class Policy;
}
#include "config.h"
#include <limits>
#include <iostream>
#include "observed_subject.hh"
#include "history.hh"
#include "schedulable_list.hh"
namespace sgpem
{
class Scheduler;
/** \brief
*/
class SG_DLLEXPORT Scheduler
{
public:
enum event
{
event_schedulable_arrival,
event_schedulable_termination,
event_end_time_slice
};
static Scheduler& get_instance();
SchedulableList* get_ready_queue();
void reset_status();
void step_forward();
void set_policy(Policy*);
Policy* get_policy();
private:
Scheduler(int); //private constructor. The parameter is discarded
static Scheduler _instance;
SchedulableList _ready_queue;
Policy* _policy;
};
}//~ namespace sgpem
#endif //SCHEDULER_HH