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#ifndef DataFormats_Track_TracksHost_H
#define DataFormats_Track_TracksHost_H
#include <cstdint>
#include <alpaka/alpaka.hpp>
#include "DataFormats/Common/interface/Uninitialized.h"
#include "DataFormats/Portable/interface/PortableHostCollection.h"
#include "DataFormats/TrackSoA/interface/TrackDefinitions.h"
#include "DataFormats/TrackSoA/interface/TracksSoA.h"
#include "Geometry/CommonTopologies/interface/SimplePixelTopology.h"
// TODO: The class is created via inheritance of the PortableHostCollection.
// This is generally discouraged, and should be done via composition.
// See: https://github.com/cms-sw/cmssw/pull/40465#discussion_r1067364306
template <typename TrackerTraits>
class TracksHost : public PortableHostCollection<reco::TrackLayout<TrackerTraits>> {
public:
static constexpr int32_t S = TrackerTraits::maxNumberOfTuples; //TODO: this could be made configurable at runtime
TracksHost(edm::Uninitialized)
: PortableHostCollection<reco::TrackLayout<TrackerTraits>>{edm::kUninitialized} {
} // necessary for ROOT dictionaries
using PortableHostCollection<reco::TrackLayout<TrackerTraits>>::view;
using PortableHostCollection<reco::TrackLayout<TrackerTraits>>::const_view;
using PortableHostCollection<reco::TrackLayout<TrackerTraits>>::buffer;
// Constructor which specifies the SoA size
template <typename TQueue>
explicit TracksHost(TQueue& queue) : PortableHostCollection<reco::TrackLayout<TrackerTraits>>(S, queue) {}
// Constructor which specifies the DevHost
explicit TracksHost(alpaka_common::DevHost const& host)
: PortableHostCollection<reco::TrackLayout<TrackerTraits>>(S, host) {}
};
namespace pixelTrack {
using TracksHostPhase1 = TracksHost<pixelTopology::Phase1>;
using TracksHostPhase2 = TracksHost<pixelTopology::Phase2>;
using TracksHostHIonPhase1 = TracksHost<pixelTopology::HIonPhase1>;
} // namespace pixelTrack
#endif // DataFormats_Track_TracksHost_H
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