ThinningToolExample.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef DERIVATIONFRAMEWORK_THINNINGTOOLEXAMPLE_H
#define DERIVATIONFRAMEWORK_THINNINGTOOLEXAMPLE_H
 
#include <string>
#include <atomic>
 
// Gaudi & Athena basics
#include "AthenaBaseComps/AthAlgTool.h"
#include "xAODTracking/TrackParticleContainer.h"
#include "StoreGate/ThinningHandleKey.h"
 
// DerivationFramework includes
#include "DerivationFrameworkInterfaces/IThinningTool.h"
 
 
namespace DerivationFramework {

  class ThinningToolExample : public extends<AthAlgTool, IThinningTool> {
    
  public: 
    using base_class::base_class;

    virtual ~ThinningToolExample();
    
    // Athena algtool's Hooks
    virtual StatusCode initialize() override;
    virtual StatusCode finalize() override;
    
    virtual StatusCode doThinning(const EventContext& ctx) const override;
 
  private:
    Gaudi::Property<std::string> m_streamName
      { this, "StreamName", "", "Name of the stream being thinned" };
 
    Gaudi::Property<double> m_trackPtCut
      { this, "TrackPtCut", 20.0, "Track p_T cut in GeV" };
 
    SG::ThinningHandleKey<xAOD::TrackParticleContainer> m_inDetSGKey
      { this, "InDetTrackParticlesKey", "InDetTrackParticles", "Key for track particle container" };
 
    mutable std::atomic<unsigned int> m_ntot{0};
    mutable std::atomic<unsigned int> m_npass{0};
 
  }; 
  
}
 
#endif