factory.cc

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//
//
// $Id: Hadr00.cc 106244 2017-09-26 01:58:00Z gcosmo $
//
// -------------------------------------------------------------
//      GEANT4 Hadr00
//
//  Application demonstrating Geant4 hadronic cross sections
//
//  Author: V.Ivanchenko 20 June 2008
//
//  Modified: 
//
// -------------------------------------------------------------
//
//
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#include "DetectorConstruction.hh"
#include "ActionInitialization.hh"
#include "PrimaryGeneratorAction.hh"

#ifdef G4MULTITHREADED
#include "G4MTRunManager.hh"
#else
#include "G4RunManager.hh"
#endif

#include "G4PhysListFactory.hh"
#include "G4VModularPhysicsList.hh"
#include "G4UImanager.hh"
#include "Randomize.hh"
#include "G4VisExecutive.hh"
#include "G4UIExecutive.hh"

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namespace {
  void PrintUsage() {
    G4cerr << " Usage: " << G4endl;
    G4cerr << " factory [-m macro ] [-p physList ] [-u UIsession] [-t nThreads]" << G4endl;
    G4cerr << "   note: -t option is available only for multi-threaded mode." << G4endl;
    G4cerr << G4endl;
  }
}

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int main(int argc,char** argv) 
{
  // Evaluate arguments
  //
  if ( argc > 9 ) {
    PrintUsage();
    return 1;
  }
  
  G4String macro;
  G4String session;
  G4String physListName;
  G4String gdmlFileName;
#ifdef G4MULTITHREADED
  G4int nofThreads = 0;
#endif
  for ( G4int i=1; i<argc; i=i+2 ) {
    if      ( G4String(argv[i]) == "-m" ) macro = argv[i+1];
    else if ( G4String(argv[i]) == "-u" ) session = argv[i+1];
    else if ( G4String(argv[i]) == "-p" ) physListName = argv[i+1];
#ifdef G4MULTITHREADED
    else if ( G4String(argv[i]) == "-t" ) {
      nofThreads = G4UIcommand::ConvertToInt(argv[i+1]);
    }
#endif
    else {
      PrintUsage();
      return 1;
    }
  }  
  
  // Detect interactive mode (if no arguments) and define UI session
  //
  G4UIExecutive* ui = 0;
  if ( ! macro.size() ) {
    ui = new G4UIExecutive(argc, argv, session);
  }

  // Choose the Random engine  //choose the Random engine
  G4Random::setTheEngine(new CLHEP::RanecuEngine());

  // Construct the run manager
#ifdef G4MULTITHREADED  
  G4MTRunManager * runManager = new G4MTRunManager(); 
  if ( nofThreads > 0 ) {
    runManager->SetNumberOfThreads(nofThreads);
  }
#else
  G4RunManager * runManager = new G4RunManager(); 
#endif

  // Physics list factory
  G4PhysListFactory factory;
  G4VModularPhysicsList* physList = nullptr;

  // Get physics list name 
  if ( ! physListName.size() ) {
    // Physics List is defined via environment variable PHYSLIST
    char* physListNameEnv = getenv("PHYSLIST");
    if ( physListNameEnv ) { 
      physListName = G4String(physListNameEnv); 
    }
  }

  // Check if the name is known to the factory
  if ( physListName.size() &&  (! factory.IsReferencePhysList(physListName) ) ) {
    G4cerr << "Physics list " << physListName 
           << " is not available in PhysListFactory." << G4endl;
    physListName.clear();
  }

  // If name is not defined use FTFP_BERT
  if ( ! physListName.size() ) {
    physListName = "FTFP_BERT";
  }

  // Reference PhysicsList via its name
  physList = factory.GetReferencePhysList(physListName);

  // Set mandatory initialization classes
  runManager->SetUserInitialization(new DetectorConstruction());
  runManager->SetUserInitialization(physList);

  // set user action classes
  runManager->SetUserInitialization(new ActionInitialization("factory"));

// Initialize visualization
  G4VisManager* visManager = new G4VisExecutive;
  // G4VisExecutive can take a verbosity argument - see /vis/verbose guidance.
  // G4VisManager* visManager = new G4VisExecutive("Quiet");
  visManager->Initialize();

  // Get the pointer to the User Interface manager
  G4UImanager* UImanager = G4UImanager::GetUIpointer();

  if ( macro.size() ) {
    // batch mode
    G4String command = "/control/execute ";
    UImanager->ApplyCommand(command+macro);
  }
  else {
    // interactive mode : define UI session
    UImanager->ApplyCommand("/control/execute init_vis.mac"); 
    ui->SessionStart();
    delete ui;
  }

  // Job termination
  // Free the store: user actions, physics_list and detector_description are
  // owned and deleted by the run manager, so they should not be deleted 
  // in the main() program !
  
  delete visManager;
  delete runManager;
}

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