G4MultiBodyMomentumDist.hh

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// Author:  Michael Kelsey (SLAC)
// Date:    7 March 2013
//
// Description: Singleton class to evaluate multi-body momentum distribution
//      functions based on initial state codes and multiplicity.
//
// NOTE:  Separate multiplicity-3 generators are not used, per V.Uzhinsky
//
// 20130619  Change singleton instance to be thread-local, to avoid collisions.
// 20130620  Address Coverity warnings about missing copy actions
 
#ifndef G4MultiBodyMomentumDist_h
#define G4MultiBodyMomentumDist_h 1
 
#include "globals.hh"
 
class G4VMultiBodyMomDst;
class G4NuclNucl3BodyMomDst;
class G4NuclNucl4BodyMomDst;
class G4HadNucl3BodyMomDst;
class G4HadNucl4BodyMomDst;
 
 
class G4MultiBodyMomentumDist {
public:
  ~G4MultiBodyMomentumDist();
 
  static const G4MultiBodyMomentumDist* GetInstance();
 
  // Return appropriate generator for initial state and multiplicity
  static const G4VMultiBodyMomDst* GetDist(G4int is, G4int mult) {
    return GetInstance()->ChooseDist(is, mult);
  }
 
  // Pass verbosity through to owned objects
  static void setVerboseLevel(G4int vb=0);
 
private:
  // Constructor is private for singleton
  G4MultiBodyMomentumDist();
  const G4VMultiBodyMomDst* ChooseDist(G4int is, G4int mult) const;
 
  void passVerbose(G4int verbose);  // Pass verbosity through instance
 
  static G4ThreadLocal G4MultiBodyMomentumDist* theInstance;    // Per thread
 
  // Generators for various initial/final state combinations
  G4NuclNucl3BodyMomDst* nn3BodyDst;    // N N to X Y Z
  G4NuclNucl4BodyMomDst* nn4BodyDst;    // N N to X Y Z W ...
  G4HadNucl3BodyMomDst*  hn3BodyDst;    // pi,K,Y,gamma N to X Y Z
  G4HadNucl4BodyMomDst*  hn4BodyDst;    // pi,K,Y,gamma N to X Y Z W ...
 
private:
  // Copying of modules is forbidden
  G4MultiBodyMomentumDist(const G4MultiBodyMomentumDist&);
  G4MultiBodyMomentumDist& operator=(const G4MultiBodyMomentumDist&);
};
 
#endif  /* G4MultiBodyMomentumDist_h */