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File indexing completed on 2025-01-18 09:55:24
0001 //========================================================================== 0002 // AIDA Detector description implementation 0003 //-------------------------------------------------------------------------- 0004 // Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN) 0005 // All rights reserved. 0006 // 0007 // For the licensing terms see $DD4hepINSTALL/LICENSE. 0008 // For the list of contributors see $DD4hepINSTALL/doc/CREDITS. 0009 // 0010 // Author : M.Frank 0011 // 0012 //========================================================================== 0013 #ifndef DDG4_GEANT4STEPPINGACTION_H 0014 #define DDG4_GEANT4STEPPINGACTION_H 0015 0016 // Framework include files 0017 #include <DDG4/Geant4Action.h> 0018 0019 // Forward declarations 0020 class G4SteppingManager; 0021 class G4Step; 0022 0023 /// Namespace for the AIDA detector description toolkit 0024 namespace dd4hep { 0025 0026 /// Namespace for the Geant4 based simulation part of the AIDA detector description toolkit 0027 namespace sim { 0028 0029 // Forward declarations 0030 class Geant4SteppingAction; 0031 class Geant4SharedSteppingAction; 0032 class Geant4SteppingActionSequence; 0033 0034 /// Concrete implementation of the Geant4 stepping action sequence 0035 /** 0036 * \author M.Frank 0037 * \version 1.0 0038 * \ingroup DD4HEP_SIMULATION 0039 */ 0040 class Geant4SteppingAction: public Geant4Action { 0041 public: 0042 typedef Geant4SharedSteppingAction shared_type; 0043 /// Define standard assignments and constructors 0044 DDG4_DEFINE_ACTION_CONSTRUCTORS(Geant4SteppingAction); 0045 0046 public: 0047 /// Standard constructor 0048 Geant4SteppingAction(Geant4Context* context, const std::string& name); 0049 /// Default destructor 0050 virtual ~Geant4SteppingAction(); 0051 /// User stepping callback 0052 virtual void operator()(const G4Step* step, G4SteppingManager* mgr); 0053 }; 0054 0055 /// Implementation of the Geant4 shared stepping action 0056 /** 0057 * Wrapper to share single instances of stepping actions for 0058 * multi-threaded purposes. The wrapper ensures the locking 0059 * of the basic actions to avoid race conditions. 0060 * 0061 * Shared action should be 'fast'. The global lock otherwise 0062 * inhibits the efficient use of the multiple threads. 0063 * 0064 * \author M.Frank 0065 * \version 1.0 0066 * \ingroup DD4HEP_SIMULATION 0067 */ 0068 class Geant4SharedSteppingAction : public Geant4SteppingAction { 0069 protected: 0070 /// Reference to the shared action 0071 Geant4SteppingAction* m_action = 0; 0072 0073 /// Define standard assignments and constructors 0074 DDG4_DEFINE_ACTION_CONSTRUCTORS(Geant4SharedSteppingAction); 0075 0076 public: 0077 /// Standard constructor 0078 Geant4SharedSteppingAction(Geant4Context* context, const std::string& nam); 0079 /// Default destructor 0080 virtual ~Geant4SharedSteppingAction(); 0081 /// Set or update client for the use in a new thread fiber 0082 virtual void configureFiber(Geant4Context* thread_context) override; 0083 /// Underlying object to be used during the execution of this thread 0084 virtual void use(Geant4SteppingAction* action); 0085 /// User stepping callback 0086 virtual void operator()(const G4Step* step, G4SteppingManager* mgr) override; 0087 }; 0088 0089 /// Concrete implementation of the Geant4 stepping action sequence 0090 /** 0091 * The sequence dispatches the callbacks for each stepping action 0092 * to all registered Geant4SteppingAction members and all 0093 * registered callbacks. 0094 * 0095 * Note Multi-Threading issue: 0096 * Neither callbacks not the action list is protected against multiple 0097 * threads calling the Geant4 callbacks! 0098 * These must be protected in the user actions themselves. 0099 * 0100 * \author M.Frank 0101 * \version 1.0 0102 * \ingroup DD4HEP_SIMULATION 0103 */ 0104 class Geant4SteppingActionSequence: public Geant4Action { 0105 protected: 0106 /// Callback sequence for user stepping action calls 0107 CallbackSequence m_calls; 0108 /// The list of action objects to be called 0109 Actors<Geant4SteppingAction> m_actors; 0110 0111 /// Define standard assignments and constructors 0112 DDG4_DEFINE_ACTION_CONSTRUCTORS(Geant4SteppingActionSequence); 0113 0114 public: 0115 /// Standard constructor 0116 Geant4SteppingActionSequence(Geant4Context* context, const std::string& name); 0117 /// Default destructor 0118 virtual ~Geant4SteppingActionSequence(); 0119 /// Set or update client context 0120 virtual void updateContext(Geant4Context* ctxt) override; 0121 /// Set or update client for the use in a new thread fiber 0122 virtual void configureFiber(Geant4Context* thread_context) override; 0123 /// Get an action by name 0124 Geant4SteppingAction* get(const std::string& name) const; 0125 /// Register stepping action callback. Types Q and T must be polymorph! 0126 template <typename Q, typename T> 0127 void call(Q* p, void (T::*f)(const G4Step*, G4SteppingManager*)) { 0128 m_calls.add(p, f); 0129 } 0130 /// Add an actor responding to all callbacks. Sequence takes ownership. 0131 void adopt(Geant4SteppingAction* action); 0132 /// User stepping callback 0133 virtual void operator()(const G4Step* step, G4SteppingManager* mgr); 0134 }; 0135 0136 } // End namespace sim 0137 } // End namespace dd4hep 0138 0139 #endif // DDG4_GEANT4STEPPINGACTION_H
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