Geant4EventAction.h

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//==========================================================================
//  AIDA Detector description implementation 
//--------------------------------------------------------------------------
// Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
// All rights reserved.
//
// For the licensing terms see $DD4hepINSTALL/LICENSE.
// For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
//
// Author     : M.Frank
//
//==========================================================================
 
#ifndef DDG4_GEANT4EVENTACTION_H
#define DDG4_GEANT4EVENTACTION_H
 
// Framework include files
#include <DDG4/Geant4Action.h>
 
// Geant4 headers
#include <G4Types.hh>
#include <G4AutoLock.hh>
 
// Forward declarations
class G4Event;
 
namespace dd4hep {
 
  namespace sim {
 
    // Forward declarations
    class Geant4EventAction;
    class Geant4SharedEventAction;
    class Geant4EventActionSequence;
 
 
    class Geant4EventAction : public Geant4Action {
    public:
      typedef Geant4SharedEventAction shared_type;
      
    protected:
      DDG4_DEFINE_ACTION_CONSTRUCTORS(Geant4EventAction);
      mutable G4Mutex m_mutex = G4MUTEX_INITIALIZER;
 
    public:
      Geant4EventAction(Geant4Context* context, const std::string& nam);
      virtual ~Geant4EventAction();
      virtual void begin(const G4Event* event);
      virtual void end(const G4Event* event);
      G4Mutex& mutex() const {
        return m_mutex;
      }
    };
 
 
    class Geant4SharedEventAction : public Geant4EventAction {
    protected:
      Geant4EventAction* m_action { nullptr };
 
    protected:
      DDG4_DEFINE_ACTION_CONSTRUCTORS(Geant4SharedEventAction);
 
    public:
      Geant4SharedEventAction(Geant4Context* context, const std::string& nam);
      virtual ~Geant4SharedEventAction();
      virtual void configureFiber(Geant4Context* thread_context)  override;
      virtual void use(Geant4EventAction* action);
      virtual void begin(const G4Event* event)  override;
      virtual void end(const G4Event* event)  override;
    };
 
 
    class Geant4EventActionSequence : public Geant4Action {
    protected:
      CallbackSequence m_begin;
      CallbackSequence m_end;
      CallbackSequence m_final;
      Actors<Geant4EventAction> m_actors;
      mutable G4Mutex m_mutex = G4MUTEX_INITIALIZER;
 
    protected:
      DDG4_DEFINE_ACTION_CONSTRUCTORS(Geant4EventActionSequence);
 
    public:
      Geant4EventActionSequence(Geant4Context* context, const std::string& nam);
      virtual ~Geant4EventActionSequence();
      virtual void updateContext(Geant4Context* ctxt)  override;
      virtual void configureFiber(Geant4Context* thread_context)  override;
      Geant4EventAction* get(const std::string& name) const;
      template <typename Q, typename T>
      void callAtBegin(Q* p, void (T::*f)(const G4Event*)) {
        m_begin.add(p, f);
      }
      template <typename Q, typename T>
      void callAtEnd(Q* p, void (T::*f)(const G4Event*)) {
        m_end.add(p, f);
      }
      template <typename Q, typename T>
      void callAtFinal(Q* p, void (T::*f)(const G4Event*)) {
        m_final.add(p, f);
      }
      void adopt(Geant4EventAction* action);
      virtual void begin(const G4Event* event);
      virtual void end(const G4Event* event);
      G4Mutex& mutex() const {
        return m_mutex;
      }
    };
 
  }    // End namespace sim
}      // End namespace dd4hep
#endif // DDG4_GEANT4EVENTACTION_H