232 lines
6.9 KiB
C++
232 lines
6.9 KiB
C++
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// src/simulation_controller.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 "gettext.h"
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#include "simulation_controller.hh"
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#include "backend/cpu_policy_exception.hh"
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#include "backend/malformed_policy_exception.hh"
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#include "backend/null_policy_exception.hh"
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#include "backend/user_interrupt_exception.hh"
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#include "backend/global_preferences.hh"
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#include "backend/simulation.hh"
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#include <glibmm/markup.h>
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#include <glibmm/timer.h>
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#include <glibmm/ustring.h>
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#include <gtkmm/messagedialog.h>
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#include <gtkmm/menutoolbutton.h>
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#include <gtkmm/menuitem.h>
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#include <cassert>
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#include <iostream>
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using namespace sgpem;
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using Gnome::Glade::Xml;
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SimulationController::SimulationController(Simulation& simulation, Glib::RefPtr<Xml> refXml)
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: _sim(simulation), _break_requested(false)
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{
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using namespace Gtk;
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_sim.attach(*this);
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// Start, pause and stop simulation from the toolbar
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// TODO: can we use action groups instead of this?
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refXml->get_widget("ToolBar.Play", _toolbt_start);
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refXml->get_widget("ToolBar.Pause", _toolbt_pause);
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refXml->get_widget("ToolBar.Stop", _toolbt_stop);
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refXml->get_widget("MenuItem.Simulation.Play", _menuit_start);
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refXml->get_widget("MenuItem.Simulation.Pause", _menuit_pause);
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refXml->get_widget("MenuItem.Simulation.Stop", _menuit_stop);
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_toolbt_start->signal_clicked().connect(sigc::mem_fun(*this, &SimulationController::on_simulation_run));
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_toolbt_pause->signal_clicked().connect(sigc::mem_fun(*this, &SimulationController::on_simulation_pause));
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_toolbt_stop->signal_clicked().connect(sigc::mem_fun(*this, &SimulationController::on_simulation_stop));
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_menuit_start->signal_activate().connect(sigc::mem_fun(*this, &SimulationController::on_simulation_run));
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_menuit_pause->signal_activate().connect(sigc::mem_fun(*this, &SimulationController::on_simulation_pause));
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_menuit_stop->signal_activate().connect(sigc::mem_fun(*this, &SimulationController::on_simulation_stop));
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}
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SimulationController::~SimulationController()
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{
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_sim.detach(*this);
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}
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void
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SimulationController::on_simulation_run()
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{
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// Sensitivities
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_toolbt_start->set_sensitive(false);
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_toolbt_pause->set_sensitive(true);
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_toolbt_stop->set_sensitive(true);
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_menuit_start->set_sensitive(false);
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_menuit_pause->set_sensitive(true);
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_menuit_stop->set_sensitive(true);
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_break_requested = false;
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// Used instead of simply calling "_sim.run()" to
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// have exception handling only in one place:
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run_simulation_adaptor();
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}
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void
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SimulationController::on_simulation_pause()
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{
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// Sensitivities
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_toolbt_start->set_sensitive(true);
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_toolbt_pause->set_sensitive(false);
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_toolbt_stop->set_sensitive(true);
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_menuit_start->set_sensitive(true);
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_menuit_pause->set_sensitive(false);
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_menuit_stop->set_sensitive(true);
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_break_requested = true;
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_sim.pause();
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}
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void
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SimulationController::on_simulation_stop()
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{
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// Sensitivities
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_toolbt_start->set_sensitive(true);
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_toolbt_pause->set_sensitive(false);
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_toolbt_stop->set_sensitive(false);
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_menuit_start->set_sensitive(true);
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_menuit_pause->set_sensitive(false);
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_menuit_stop->set_sensitive(false);
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_break_requested = true;
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_sim.stop();
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}
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void
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SimulationController::update(const Simulation& simulation)
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{
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#ifndef NDEBUG
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std::cerr << "SimulationController::update(), simulation state == " << std::hex << simulation.get_state() << std::endl;
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#endif
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if(_break_requested)
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return;
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switch(simulation.get_state())
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{
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case Simulation::state_stopped:
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on_simulation_stop();
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return;
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case Simulation::state_paused:
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on_simulation_pause();
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return;
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case Simulation::state_running:
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// Go on with the rest of the method...
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break;
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}
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// We should never enter here, if the code is correct:
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// a step by step simulation should always be in paused
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// or stopped state after performing a single step
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assert(simulation.get_mode() != Simulation::mode_step_by_step);
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switch(simulation.get_mode())
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{
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case Simulation::mode_continuous:
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{
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int timeout = GlobalPreferences::get_instance().get_speed();
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Glib::signal_timeout().connect(sigc::mem_fun(*this, &SimulationController::run_simulation_adaptor), timeout);
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}
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break;
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default:
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// Never gets here.
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break;
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}
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}
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bool
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SimulationController::run_simulation_adaptor()
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{
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using Gtk::MessageDialog;
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using namespace Glib;
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if(!_break_requested)
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try
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{
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_sim.run();
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}
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catch(const UserInterruptException& uie)
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{
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// Show the user a dialog
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MessageDialog diag(_("<b>The selected user CPU policy stopped before returning:</b>\n") + Markup::escape_text(uie.what()),
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true, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
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diag.run();
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}
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catch(const MalformedPolicyException& mpe)
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{
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// Show user a dialog
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MessageDialog diag(_("<b>The selected user CPU policy was malformed and failed to sort the queue:</b>\n") +
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Markup::escape_text(mpe.what()), true, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
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diag.run();
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try
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{
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// Deactivate the policy
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_sim.set_policy(NULL);
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}
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catch(const CPUPolicyException& cpe)
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{
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// Fatal error. We should never get here.
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std::cerr << _(" [EE] Fatal error. Impossible to deactivate the policy in ") << __FILE__ << ":" << __LINE__
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<< std::endl << _(" [EE] ") << cpe.what() << std::endl;
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;
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abort();
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}
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}
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catch(const NullPolicyException& npe)
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{
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MessageDialog diag(_("<b>No active policy selected:</b>\n") + Markup::escape_text(npe.what()),
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true, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
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diag.run();
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}
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catch(const CPUPolicyException& cpe)
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{
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MessageDialog diag(_("<b>Unexpected error</b>:\n") + Markup::escape_text(cpe.what()),
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true, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
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diag.run();
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}
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return false;
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}
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