Import Geant4 11.3.0.beta source tree

2024-06-28 13:08:51 +02:00
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+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+// 18 April 2024   V.Ivanchenko
+//
+// This is a singleton class to store shared EM physics data.
+// The access to data is possible only by data name.
+// Once created data pointers does not changed or deleted until the
+// end of the job, this class is responsible for destruction.
+//
+
+#ifndef G4EmDataRegistry_h
+#define G4EmDataRegistry_h 1
+
+#include <vector>
+#include "G4EmDataHandler.hh"
+
+class G4EmDataRegistry
+{
+ public:
+
+  static G4EmDataRegistry* Instance();
+
+  ~G4EmDataRegistry();
+
+  // create or access data handler
+  // nTable - number of tables in a new handler
+  G4EmDataHandler* GetHandlerByName(const G4String&, std::size_t nTable);
+
+  // register a new handler
+  void Register(G4EmDataHandler*);
+
+  // hide assignment operator 
+  G4EmDataRegistry& operator=(const G4EmDataRegistry &right) = delete;
+  G4EmDataRegistry(const G4EmDataRegistry&) = delete;
+
+ private:
+
+  G4EmDataRegistry();
+
+  G4EmDataHandler* EmDataHandler(const G4String&);
+
+  static G4EmDataRegistry* instance;
+
+  std::vector<G4EmDataHandler*> fDataHandlers;
+};
+
+#endif