171 lines
3.2 KiB
C++
171 lines
3.2 KiB
C++
// src/backend/concrete_simulation.cc - 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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#include "concrete_simulation.hh"
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#include "scheduler.hh"
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#include "cpu_policies_gatekeeper.hh"
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#include <glibmm/timer.h>
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#include <cassert>
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#include "smartp.tcc"
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using namespace std;
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using namespace sgpem;
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using namespace memory;
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using Glib::usleep;
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ConcreteSimulation::ConcreteSimulation() :
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_state(state_stopped), _mode(true), _timer_interval(1000), _policy(NULL)
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{}
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void
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ConcreteSimulation::set_timer(unsigned int t)
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{
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_timer_interval = t;
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}
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int
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ConcreteSimulation::get_timer() const
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{
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return _timer_interval;
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}
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void
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ConcreteSimulation::set_mode(const bool& b)
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{
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_mode = b;
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}
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bool
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ConcreteSimulation::get_mode() const
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{
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return _mode;
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}
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void
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ConcreteSimulation::pause()
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{
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_state = state_paused;
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}
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void
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ConcreteSimulation::stop()
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{
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_state = state_stopped;
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}
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void
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ConcreteSimulation::run() throw(UserInterruptException, NullPolicyException, MalformedPolicyException)
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{
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switch (_state)
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{
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case state_running:
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return;
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case state_stopped:
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_history.reset(true);
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break;
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default:
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;
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}
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_state = state_running;
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if (get_policy() == NULL)
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{
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stop();
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throw NullPolicyException("no policy selected");
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}
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//******* CONTINUOUS TIME
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if (_mode)
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{
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do
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{
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try
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{
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//step forward
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bool yet_to_finish = Scheduler::get_instance().step_forward(_history, *get_policy());
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if (!yet_to_finish) stop();
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//sleep
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Glib::usleep(_timer_interval*1000);
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}
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catch (const CPUPolicyException& e)
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{
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stop();
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throw;
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}
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//check the state
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if (_state == state_stopped || _state == state_paused)
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return;
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}
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while (true);
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}
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//******* STEP by STEP
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else
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{
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try
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{
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assert(get_policy() != NULL);
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//step forward
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bool yet_to_finish = Scheduler::get_instance().step_forward(_history, *get_policy());
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if (yet_to_finish)
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pause();
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else
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stop();
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}
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catch (const CPUPolicyException& e)
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{
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stop();
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throw;
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}
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}
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}
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Simulation::state
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ConcreteSimulation::get_state() const
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{
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return _state;
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}
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ConcreteHistory&
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ConcreteSimulation::get_history()
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{
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return _history;
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}
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void
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ConcreteSimulation::set_policy(CPUPolicy* p)
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{
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_policy = p;
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CPUPoliciesGatekeeper::get_instance().activate_policy(&_history, p);
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}
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CPUPolicy*
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ConcreteSimulation::get_policy()
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{
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return _policy;
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}
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