LArSoft  v09_90_00
Liquid Argon Software toolkit - https://larsoft.org/
exampleB4b.cc File Reference

Main program of the B4b example. More...

#include "B4DetectorConstruction.hh"
#include "B4bActionInitialization.hh"
#include "G4RunManager.hh"
#include "G4UImanager.hh"
#include "G4UIcommand.hh"
#include "FTFP_BERT.hh"
#include "Randomize.hh"
#include "G4VisExecutive.hh"
#include "G4UIExecutive.hh"

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Functions

int main (int argc, char **argv)
 

Detailed Description

Main program of the B4b example.

Definition in file exampleB4b.cc.

Function Documentation

int main ( int  argc,
char **  argv 
)

Definition at line 61 of file exampleB4b.cc.

References PrintUsage(), and session.

62 {
63  // Evaluate arguments
64  //
65  if ( argc > 7 ) {
66  PrintUsage();
67  return 1;
68  }
69 
70  G4String macro;
72 #ifdef G4MULTITHREADED
73  G4int nThreads = 0;
74 #endif
75  for ( G4int i=1; i<argc; i=i+2 ) {
76  if ( G4String(argv[i]) == "-m" ) macro = argv[i+1];
77  else if ( G4String(argv[i]) == "-u" ) session = argv[i+1];
78 #ifdef G4MULTITHREADED
79  else if ( G4String(argv[i]) == "-t" ) {
80  nThreads = G4UIcommand::ConvertToInt(argv[i+1]);
81  }
82 #endif
83  else {
84  PrintUsage();
85  return 1;
86  }
87  }
88 
89  // Detect interactive mode (if no macro provided) and define UI session
90  //
91  G4UIExecutive* ui = nullptr;
92  if ( ! macro.size() ) {
93  ui = new G4UIExecutive(argc, argv, session);
94  }
95 
96  // Optionally: choose a different Random engine...
97  //
98  // G4Random::setTheEngine(new CLHEP::MTwistEngine);
99 
100  // Construct the default run manager
101  //
102 #ifdef G4MULTITHREADED
103  auto runManager = new G4MTRunManager;
104  if ( nThreads > 0 ) {
105  runManager->SetNumberOfThreads(nThreads);
106  }
107 #else
108  auto runManager = new G4RunManager;
109 #endif
110 
111  // Set mandatory initialization classes
112  //
113  auto detConstruction = new B4DetectorConstruction();
114  runManager->SetUserInitialization(detConstruction);
115 
116  auto physicsList = new FTFP_BERT;
117  runManager->SetUserInitialization(physicsList);
118 
119  auto actionInitialization = new B4bActionInitialization(detConstruction);
120  runManager->SetUserInitialization(actionInitialization);
121 
122  // Initialize visualization
123  auto visManager = new G4VisExecutive;
124  // G4VisExecutive can take a verbosity argument - see /vis/verbose guidance.
125  // G4VisManager* visManager = new G4VisExecutive("Quiet");
126  visManager->Initialize();
127 
128  // Get the pointer to the User Interface manager
129  auto UImanager = G4UImanager::GetUIpointer();
130 
131  // Process macro or start UI session
132  //
133  if ( macro.size() ) {
134  // batch mode
135  G4String command = "/control/execute ";
136  UImanager->ApplyCommand(command+macro);
137  }
138  else {
139  // interactive mode : define UI session
140  UImanager->ApplyCommand("/control/execute init_vis.mac");
141  if (ui->IsGUI()) {
142  UImanager->ApplyCommand("/control/execute gui.mac");
143  }
144  ui->SessionStart();
145  delete ui;
146  }
147 
148  // Job termination
149  // Free the store: user actions, physics_list and detector_description are
150  // owned and deleted by the run manager, so they should not be deleted
151  // in the main() program !
152 
153  delete visManager;
154  delete runManager;
155 }
static G4UIterminal * session
void PrintUsage()