Gabriele Cosmo
76 lines
3.4 KiB
C++
76 lines
3.4 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// G4CrossSectionFactoryRegistry class
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//
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// This class implements a regsitry for cross-section factories
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// It can be used to access factories to instantiate cross-section
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// datasets on demand. This is intended to be shared among threads
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// see G4CrossSectionFactory class: while G4CrossSectionDataSetRegistry
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// is per-thread (G4ThreadLocal), this class is shared, so only one instance
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// of each factory exists for each application. This is needed because factories
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// rely on global variables to register themselves in this registry.
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// Note: use of this class is thread-safe.
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//
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// History:
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// 1-Apr-2013: A. Dotti, first implementation
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#ifndef G4CROSSSECTIONFACTORYREGISTRY_HH
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#define G4CROSSSECTIONFACTORYREGISTRY_HH
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#include <ostream>
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#include <G4String.hh>
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#include <map>
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class G4VBaseXSFactory;
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class G4CrossSectionFactoryRegistry
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{
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friend std::ostream& operator<<(std::ostream&, const G4CrossSectionFactoryRegistry&);
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public:
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static G4CrossSectionFactoryRegistry* Instance();
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~G4CrossSectionFactoryRegistry() = default;
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G4VBaseXSFactory* GetFactory( const G4String& name, G4bool abortIfNotFound = true) const;
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//Search a cross-section factory by name, by default rise an exception if factory is not found
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void Register( const G4String& name, G4VBaseXSFactory* factory );
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void DeRegister( G4VBaseXSFactory* factory );
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G4CrossSectionFactoryRegistry(const G4CrossSectionFactoryRegistry&) = delete;
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G4CrossSectionFactoryRegistry& operator=(const G4CrossSectionFactoryRegistry&) = delete;
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private:
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G4CrossSectionFactoryRegistry();
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std::map<G4String, G4VBaseXSFactory*> factories;
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static G4CrossSectionFactoryRegistry* instance; //Note this is shared among threads
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};
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std::ostream& operator<<(std::ostream& msg, const G4CrossSectionFactoryRegistry& rhs);
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#endif // G4CROSSSECTIONFACTORYREGISTRY_HH
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