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eclipse
GitHub Repository: eclipse/sumo
 Path: blob/main/src/sumo_main.cpp
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/****************************************************************************/

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// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo

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// Copyright (C) 2001-2025 German Aerospace Center (DLR) and others.

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// This program and the accompanying materials are made available under the

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// terms of the Eclipse Public License 2.0 which is available at

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// https://www.eclipse.org/legal/epl-2.0/

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// This Source Code may also be made available under the following Secondary

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// Licenses when the conditions for such availability set forth in the Eclipse

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// Public License 2.0 are satisfied: GNU General Public License, version 2

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// or later which is available at

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// https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html

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// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later

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/****************************************************************************/

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/// @file    sumo_main.cpp

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/// @author  Daniel Krajzewicz

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/// @author  Jakob Erdmann

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/// @author  Axel Wegener

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/// @author  Thimor Bohn

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/// @author  Michael Behrisch

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/// @date    Tue, 20 Nov 2001

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///

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// Main for SUMO

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/****************************************************************************/

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#include <config.h>

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#ifdef HAVE_VERSION_H

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#include <version.h>

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#endif

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#include <csignal>

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#include <netload/NLBuilder.h>

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#include <utils/common/MsgHandler.h>

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#include <utils/common/SystemFrame.h>

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#include <utils/options/OptionsIO.h>

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#include <utils/xml/XMLSubSys.h>

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#include <traci-server/TraCIServer.h>

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// ===========================================================================

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// functions

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// ===========================================================================

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void

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signalHandler(int signum) {

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    if (MSNet::hasInstance()) {

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        switch (signum) {

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            case SIGINT:

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            case SIGTERM:

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                if (MSNet::getInstance()->isInterrupted()) {

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                    std::cout << TL("Another interrupt signal received, hard exit.") << std::endl;

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                    exit(signum);

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                }

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                std::cout << TL("Interrupt signal received, trying to exit gracefully.") << std::endl;

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                MSNet::getInstance()->interrupt();

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                break;

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#ifndef WIN32

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            case SIGUSR1:

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                std::cout << "Step #" << SIMSTEP << std::endl;

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                std::cout << MSNet::getInstance()->generateStatistics(string2time(OptionsCont::getOptions().getString("begin")),

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                          SysUtils::getCurrentMillis()) << std::endl;

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                break;

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            case SIGUSR2:

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                //TODO reload sim

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                break;

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#endif

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            default:

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                break;

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        }

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    }

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}

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/* -------------------------------------------------------------------------

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 * main

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 * ----------------------------------------------------------------------- */

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int

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main(int argc, char** argv) {

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    signal(SIGINT, signalHandler);

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    signal(SIGTERM, signalHandler);

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#ifndef WIN32

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    signal(SIGUSR1, signalHandler);

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    signal(SIGUSR2, signalHandler);

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#endif

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    OptionsCont& oc = OptionsCont::getOptions();

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    // give some application descriptions

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    oc.setApplicationDescription(TL("A microscopic, multi-modal traffic simulation."));

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    oc.setApplicationName("sumo", "Eclipse SUMO sumo " VERSION_STRING);

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    gSimulation = true;

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    int ret = 0;

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    MSNet* net = nullptr;

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    try {

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        // initialise subsystems

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        XMLSubSys::init();

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        OptionsIO::setArgs(argc, argv);

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        // load the net

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        MSNet::SimulationState state = MSNet::SIMSTATE_LOADING;

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        while (state == MSNet::SIMSTATE_LOADING) {

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            net = NLBuilder::init();

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            if (net != nullptr) {

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                state = net->simulate(string2time(oc.getString("begin")), string2time(oc.getString("end")));

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                delete net;

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            } else {

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                break;

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            }

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            // flush warnings and prepare reinit of all outputs

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            MsgHandler::getWarningInstance()->clear();

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            OutputDevice::closeAll();

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            MsgHandler::cleanupOnEnd();

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        }

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    } catch (const ProcessError& e) {

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        if (std::string(e.what()) != std::string("Process Error") && std::string(e.what()) != std::string("")) {

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            WRITE_ERROR(e.what());

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        }

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        MsgHandler::getErrorInstance()->inform(TL("Quitting (on error)."), false);

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        // we need to delete the network explicitly to trigger the cleanup in the correct order

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        delete net;

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        ret = 1;

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#ifndef _DEBUG

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    } catch (const std::exception& e) {

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        if (std::string(e.what()) != std::string("")) {

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            WRITE_ERROR(e.what());

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        }

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        MsgHandler::getErrorInstance()->inform(TL("Quitting (on error)."), false);

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        ret = 1;

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    } catch (...) {

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        MsgHandler::getErrorInstance()->inform(TL("Quitting (on unknown error)."), false);

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        ret = 1;

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#endif

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    }

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    TraCIServer::close();

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    SystemFrame::close();

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    return ret;

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}

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/****************************************************************************/

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