NthEvent_module.cc

// Class:       NthEvent
// Module Type: filter
// File:        NthEvent_module.cc
//
// Generated at Tue Jan  6 11:52:08 2015 by John Freeman using artmod
// from cetpkgsupport v1_07_01.

#include "art/Framework/Core/EDFilter.h"
#include "art/Framework/Core/ModuleMacros.h"
#include "art/Framework/Principal/Event.h"
#include "art/Framework/Principal/Handle.h"
#include "art/Framework/Principal/Run.h"
#include "art/Framework/Principal/SubRun.h"
#include "canvas/Utilities/InputTag.h"

#include "fhiclcpp/ParameterSet.h"
#include "messagefacility/MessageLogger/MessageLogger.h"

#include <memory>

class NthEvent;

class NthEvent : public art::EDFilter
{
public:
    explicit NthEvent(fhicl::ParameterSet const& p);

    // The destructor generated by the compiler is fine for classes
    // without bare pointers or other resource use.

    NthEvent(NthEvent const&) = delete;

    NthEvent(NthEvent&&) = delete;

    NthEvent& operator =(NthEvent const&) = delete;

    NthEvent& operator =(NthEvent&&) = delete;

    bool filter(art::Event& e) override;


private:

    uint32_t nth_;
};


NthEvent::NthEvent(fhicl::ParameterSet const& p) : 
    #if ART_HEX_VERSION >= 0x30200
    art::EDFilter{p}, 
    #endif
    nth_( p.get<uint32_t>( "nth" ) ) {}

inline
bool NthEvent::filter(art::Event& e)
{
    return e.event() % nth_ == 0 ? true : false;
}

DEFINE_ART_MODULE(NthEvent)