Pythia8Singleton.cxx

Go to the documentation of this file.

//____________________________________________________________________________
/*
 Copyright (c) 2003-2025, The GENIE Collaboration
 For the full text of the license visit http://copyright.genie-mc.org
 
*/
//____________________________________________________________________________
 
#include <sstream>
#include <iostream>
 
#include "Framework/Messenger/Messenger.h"
#include "Framework/Utils/Pythia8Singleton.h"
 
namespace genie {
 
//____________________________________________________________________________
//ostream & operator << (ostream & stream, const Pythia8Singleton & cache)
//{
//  cache.Print(stream);
//  return stream;
//}
//____________________________________________________________________________
Pythia8Singleton * Pythia8Singleton::fInstance = 0;
//____________________________________________________________________________
Pythia8Singleton::Pythia8Singleton()
{
  fInstance = 0;
#ifdef __GENIE_PYTHIA8_ENABLED__
  fPythia   = 0;
#endif
 
}
//____________________________________________________________________________
Pythia8Singleton::~Pythia8Singleton()
{
#ifdef __GENIE_PYTHIA8_ENABLED__
  if (fPythia) {
    delete fPythia;
  }
#endif
  fInstance = 0;
}
//____________________________________________________________________________
Pythia8Singleton * Pythia8Singleton::Instance()
{
  if (fInstance == 0) {
    static Pythia8Singleton::Cleaner cleaner;
    cleaner.DummyMethodAndSilentCompiler();
 
    fInstance = new Pythia8Singleton;
 
#ifdef __GENIE_PYTHIA8_ENABLED__
    // actually create the one to be held
    fInstance->fPythia = new Pythia8::Pythia();
#endif
  }
  return fInstance;
}
//____________________________________________________________________________
//void Pythia8Singleton::Print(ostream & stream) const
//{
//  stream << "\n [-] GENIE Pythia8Singleton:";
//  stream << "\n ";
//  stream << "\n";
//}
//___________________________________________________________________________
 
} // genie namespace