Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/magneticfield/include/G4FieldManagerStore.hh

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
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  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
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 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
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 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
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 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 //
 26 // G4FieldManagerStore
 27 //
 28 // Class description:
 29 //
 30 // Container for all FieldManagers, with functionality derived
 31 // from std::vector<T>. The class is a 'singleton', in that only
 32 // one can exist, and access is provided via the static function
 33 // G4FieldManagerStore::GetInstance().
 34 //
 35 // All FieldManagers should be registered with G4FieldManagerStore,
 36 // and removed on their destruction. 
 37 // Intended principally to enable resetting of 'state' at start of event.
 38 // The underlying container initially has a capacity of 100.
 39 
 40 // Author: J.Apostolakis, 07.12.2007 - Initial version
 41 // --------------------------------------------------------------------
 42 #ifndef G4FIELDMANAGERSTORE_HH
 43 #define G4FIELDMANAGERSTORE_HH
 44 
 45 #include <vector>
 46 
 47 #include "G4FieldManager.hh"
 48 
 49 class G4FieldManagerStore : public std::vector<G4FieldManager*>
 50 {
 51   public:  // with description
 52 
 53     static void Register(G4FieldManager* pVolume);
 54       // Add the logical volume to the collection.
 55     static void DeRegister(G4FieldManager* pVolume);
 56       // Remove the logical volume from the collection.
 57     static G4FieldManagerStore* GetInstance();
 58       // Get a ptr to the unique G4FieldManagerStore, creating it if necessary.
 59     static G4FieldManagerStore* GetInstanceIfExist();
 60       // Get a ptr to the unique G4FieldManagerStore.
 61     static void Clean();
 62       // Delete all volumes from the store.
 63 
 64     void ClearAllChordFindersState();
 65       // Looping over all field managers, call each one to reset step estimate
 66 
 67     ~G4FieldManagerStore();
 68       // Destructor: takes care to delete allocated field managers.
 69 
 70   protected:
 71   
 72     G4FieldManagerStore();
 73 
 74   private:
 75 
 76     static G4ThreadLocal G4FieldManagerStore* fgInstance;
 77     static G4ThreadLocal G4bool locked;
 78 };
 79 
 80 #endif
 81