exampleB4c.cc

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//
 
#include "ActionInitialization.hh"
#include "DetectorConstruction.hh"
#include "FTFP_BERT.hh"
 
#include "G4RunManagerFactory.hh"
#include "G4SteppingVerbose.hh"
#include "G4UIExecutive.hh"
#include "G4UIcommand.hh"
#include "G4UImanager.hh"
#include "G4VisExecutive.hh"
// #include "Randomize.hh"
 
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namespace {
void PrintUsage() {
  G4cerr << " Usage: " << G4endl;
  G4cerr << " exampleB4c [-m macro ] [-u UIsession] [-t nThreads] [-vDefault]" << G4endl;
  G4cerr << "   note: -t option is available only for multi-threaded mode." << G4endl;
}
} // namespace
 
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int main(int argc, char** argv) {
  // Evaluate arguments
  //
  if (argc > 7) {
    PrintUsage();
    return 1;
  }
 
  G4String macro;
  G4String session;
  G4bool verboseBestUnits = true;
#ifdef G4MULTITHREADED
  G4int nThreads = 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];
#ifdef G4MULTITHREADED
    else if (G4String(argv[i]) == "-t") {
      nThreads = G4UIcommand::ConvertToInt(argv[i + 1]);
    }
#endif
    else if (G4String(argv[i]) == "-vDefault") {
      verboseBestUnits = false;
      --i; // this option is not followed with a parameter
    } else {
      PrintUsage();
      return 1;
    }
  }
 
  // Detect interactive mode (if no macro provided) and define UI session
  //
  G4UIExecutive* ui = nullptr;
  if (!macro.size()) {
    ui = new G4UIExecutive(argc, argv, session);
  }
 
  // Optionally: choose a different Random engine...
  // G4Random::setTheEngine(new CLHEP::MTwistEngine);
 
  // Use G4SteppingVerboseWithUnits
  if (verboseBestUnits) {
    G4int precision = 4;
    G4SteppingVerbose::UseBestUnit(precision);
  }
 
  // Construct the default run manager
  //
  auto runManager = G4RunManagerFactory::CreateRunManager(G4RunManagerType::Default);
#ifdef G4MULTITHREADED
  if (nThreads > 0) {
    runManager->SetNumberOfThreads(nThreads);
  }
#endif
 
  // Set mandatory initialization classes
  //
  auto detConstruction = new B4c::DetectorConstruction();
  runManager->SetUserInitialization(detConstruction);
 
  auto physicsList = new FTFP_BERT(0); // 0: suppress physics-list verbosity
  runManager->SetUserInitialization(physicsList);
 
  auto actionInitialization = new B4c::ActionInitialization();
  runManager->SetUserInitialization(actionInitialization);
 
  // Initialize visualization in quiet mode to suppress driver-init noise in logs.
  auto visManager = new G4VisExecutive("Quiet");
  visManager->Initialize();
 
  // Get the pointer to the User Interface manager
  auto UImanager = G4UImanager::GetUIpointer();
 
  // Process macro or start UI session
  //
  int exitCode = 0;
  if (macro.size()) {
    // batch mode
    G4String command = "/control/execute ";
    exitCode         = UImanager->ApplyCommand(command + macro);
  } else {
    // interactive mode : define UI session
    UImanager->ApplyCommand("/control/execute init_vis.mac");
    if (ui->IsGUI()) {
      UImanager->ApplyCommand("/control/execute gui.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;
  return exitCode != 0 ? 1 : 0;
}
 
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