Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/cross_sections/include/G4CrossSectionFactoryRegistry.hh

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 25 //
 26 // G4CrossSectionFactoryRegistry class
 27 //
 28 // This class implements a regsitry for cross-section factories
 29 // It can be used to access factories to instantiate cross-section
 30 // datasets on demand. This is intended to be shared among threads
 31 // see G4CrossSectionFactory class: while G4CrossSectionDataSetRegistry
 32 // is per-thread (G4ThreadLocal), this class is shared, so only one instance
 33 // of each factory exists for each application. This is needed because factories
 34 // rely on global variables to register themselves in this registry.
 35 // Note: use of this class is thread-safe.
 36 //
 37 // History:
 38 // 1-Apr-2013: A. Dotti, first implementation
 39 #ifndef G4CROSSSECTIONFACTORYREGISTRY_HH
 40 #define G4CROSSSECTIONFACTORYREGISTRY_HH
 41 
 42 #include <ostream>
 43 #include <G4String.hh>
 44 #include <map>
 45 
 46 class G4VBaseXSFactory;
 47 
 48 class G4CrossSectionFactoryRegistry
 49 {
 50     friend std::ostream& operator<<(std::ostream&, const G4CrossSectionFactoryRegistry&);
 51 private:
 52     std::map<G4String, G4VBaseXSFactory*> factories;
 53     static G4CrossSectionFactoryRegistry* instance; //Note this is shared among threads
 54     G4CrossSectionFactoryRegistry();
 55     G4CrossSectionFactoryRegistry(const G4CrossSectionFactoryRegistry& );
 56     G4CrossSectionFactoryRegistry& operator=(const G4CrossSectionFactoryRegistry&);
 57     //Disable copy-ctr and assignement operator
 58 public:
 59     static G4CrossSectionFactoryRegistry* Instance();
 60     G4VBaseXSFactory* GetFactory( const G4String& name , G4bool abortIfNotFound = true) const;
 61     //Search a cross-section factory by name, by default rise an exception if factory is not found 
 62     void Register( const G4String& name , G4VBaseXSFactory* factory );
 63 };
 64 
 65 std::ostream&  operator<<(std::ostream& msg, const G4CrossSectionFactoryRegistry& rhs);
 66 
 67 #endif // G4CROSSSECTIONFACTORYREGISTRY_HH
 68