78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
// src/backend/scheduler.hh - Copyright 2005, 2006, University
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// of Padova, dept. of Pure and Applied
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// Mathematics
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//
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// This file is part of SGPEMv2.
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//
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// This is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// SGPEMv2 is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with SGPEMv2; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef SCHEDULER_HH
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#define SCHEDULER_HH 1
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namespace sgpem
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{
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class Policy;
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}
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#include "config.h"
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#include <limits>
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#include <iostream>
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#include "observed_subject.hh"
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#include "history.hh"
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#include "schedulable_list.hh"
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namespace sgpem
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{
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class Scheduler;
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/** \brief
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*/
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class SG_DLLEXPORT Scheduler
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{
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public:
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enum event
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{
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event_schedulable_arrival,
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event_schedulable_termination,
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event_end_time_slice
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};
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static Scheduler& get_instance();
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SchedulableList* get_ready_queue();
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void reset_status();
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void step_forward();
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void set_policy(Policy*);
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Policy* get_policy();
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private:
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Scheduler(int); //private constructor. The parameter is discarded
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static Scheduler _instance;
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SchedulableList _ready_queue;
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Policy* _policy;
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};
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}//~ namespace sgpem
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#endif //SCHEDULER_HH
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