genie::Pythia8Singleton Class Reference

Manage a single instance of pythia8. More...

#include <Pythia8Singleton.h>

Collaboration diagram for genie::Pythia8Singleton:

Classes
struct	Cleaner
	proper de-allocation of the singleton object More...

Static Public Member Functions
static Pythia8Singleton *	Instance (void)

Private Member Functions
	Pythia8Singleton ()
	singleton class: constructors are private
	Pythia8Singleton (const Pythia8Singleton &cache)
virtual	~Pythia8Singleton ()

Static Private Attributes
static Pythia8Singleton *	fInstance = 0
	print

Friends
struct	Cleaner

Detailed Description

Manage a single instance of pythia8.

Author

Robert Hatcher <rhatcher \at fnal.gov> Fermilab

Created:\n May 15, 2024

License:\n Copyright (c) 2003-2025, The GENIE Collaboration

For the full text of the license visit http://copyright.genie-mc.org

Definition at line 31 of file Pythia8Singleton.h.

Constructor & Destructor Documentation

Pythia8Singleton() [1/2]

genie::Pythia8Singleton::Pythia8Singleton ( )

private

singleton class: constructors are private

Definition at line 26 of file Pythia8Singleton.cxx.

{
  fInstance = 0;
#ifdef __GENIE_PYTHIA8_ENABLED__
  fPythia   = 0;
#endif
 
}

References fInstance.

Referenced by Instance(), and Pythia8Singleton().

Pythia8Singleton() [2/2]

genie::Pythia8Singleton::Pythia8Singleton ( const Pythia8Singleton & cache )

private

References Pythia8Singleton().

~Pythia8Singleton()

genie::Pythia8Singleton::~Pythia8Singleton ( )

privatevirtual

Definition at line 35 of file Pythia8Singleton.cxx.

{
#ifdef __GENIE_PYTHIA8_ENABLED__
  if (fPythia) {
    delete fPythia;
  }
#endif
  fInstance = 0;
}

References fInstance.

Member Function Documentation

Instance()

Pythia8Singleton * genie::Pythia8Singleton::Instance ( void )

static

Definition at line 45 of file Pythia8Singleton.cxx.

{
  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;
}

References genie::Pythia8Singleton::Cleaner::DummyMethodAndSilentCompiler(), fInstance, and Pythia8Singleton().

Referenced by genie::AGCharmPythia8Hadro2023::CopyOriginalDecayFlags(), genie::Pythia8Hadro2019::CopyOriginalDecayFlags(), genie::Pythia8Decayer2023::Decay(), genie::Pythia8Hadro2019::Hadronize(), genie::AGCharmPythia8Hadro2023::HadronizeRemnant(), genie::Pythia8Decayer2023::InhibitDecay(), genie::AGCharmPythia8Hadro2023::Initialize(), genie::LeptoHadPythia8::Initialize(), genie::PhotonCOHWdecPythia8::Initialize(), genie::Pythia8Decayer2023::Initialize(), genie::Pythia8Hadro2019::Initialize(), genie::Pythia8Hadro2019::LoadConfig(), genie::AGCharmPythia8Hadro2023::RestoreOriginalDecayFlags(), genie::Pythia8Hadro2019::RestoreOriginalDecayFlags(), genie::AGCharmPythia8Hadro2023::SetDesiredDecayFlags(), genie::Pythia8Hadro2019::SetDesiredDecayFlags(), and genie::Pythia8Decayer2023::UnInhibitDecay().

Friends And Related Symbol Documentation

Cleaner

friend struct Cleaner

friend

Definition at line 69 of file Pythia8Singleton.h.

Member Data Documentation

fInstance

Pythia8Singleton * genie::Pythia8Singleton::fInstance = 0

staticprivate

print

singleton instance

Definition at line 48 of file Pythia8Singleton.h.

Referenced by Instance(), Pythia8Singleton(), genie::Pythia8Singleton::Cleaner::~Cleaner(), and ~Pythia8Singleton().

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The documentation for this class was generated from the following files:

• Pythia8Singleton.h
• Pythia8Singleton.cxx