GlobalTrackingGeometry.h

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#ifndef GlobalTrackingGeometry_h
#define GlobalTrackingGeometry_h

# include "Geometry/CommonDetUnit/interface/TrackingGeometry.h"
# include <vector>
# include <atomic>

class GlobalTrackingGeometry : public TrackingGeometry
{
 public:

  GlobalTrackingGeometry(std::vector<const TrackingGeometry*>& geos);

  ~GlobalTrackingGeometry() override;  

  // Return a vector of all det types.
  const DetTypeContainer&  detTypes() const override;
  
  // Returm a vector of all GeomDetUnit
  const DetContainer& detUnits() const override;
  
  // Returm a vector of all GeomDet (including all GeomDetUnits)
  const DetContainer& dets() const override;
  
  // Returm a vector of all GeomDetUnit DetIds
  const DetIdContainer& detUnitIds() const override;
  
  // Returm a vector of all GeomDet DetIds (including those of GeomDetUnits)
  const DetIdContainer& detIds() const override;
  
  // Return the pointer to the GeomDetUnit corresponding to a given DetId
  const GeomDet* idToDetUnit(DetId) const override;
  
  // Return the pointer to the GeomDet corresponding to a given DetId
  // (valid also for GeomDetUnits)
  const GeomDet* idToDet(DetId) const override; 
  
  const TrackingGeometry* slaveGeometry(DetId id) const;

 private:
  
  std::vector<const TrackingGeometry*> theGeometries;

  // The const methods claim to simply return these vectors,
  // but actually, they'll fill them up the first time they
  // are called, which is rare (or never).
  mutable std::atomic<DetTypeContainer*>  theDetTypes;
  mutable std::atomic<DetContainer*>      theDetUnits;
  mutable std::atomic<DetContainer*>      theDets;
  mutable std::atomic<DetIdContainer*>    theDetUnitIds;
  mutable std::atomic<DetIdContainer*>    theDetIds;
};

#endif