TkSeedGenerator/plugins/MultiHitFromChi2EDProducer.cc

0001 #include "FWCore/Framework/interface/stream/EDProducer.h"
0002 #include "FWCore/Framework/interface/ConsumesCollector.h"
0003 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0004 #include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
0005 #include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
0006 #include "FWCore/Utilities/interface/EDGetToken.h"
0007 #include "FWCore/Framework/interface/Event.h"
0008 #include "DataFormats/Common/interface/Handle.h"
0009 #include "FWCore/Utilities/interface/RunningAverage.h"
0010
0011 #include "RecoTracker/TkHitPairs/interface/IntermediateHitDoublets.h"
0012 #include "RecoTracker/TkHitPairs/interface/RegionsSeedingHitSets.h"
0013 #include "DataFormats/Common/interface/OwnVector.h"
0014 #include "RecoPixelVertexing/PixelTriplets/interface/LayerTriplets.h"
0015 #include "MultiHitGeneratorFromChi2.h"
0016
0017 class MultiHitFromChi2EDProducer : public edm::stream::EDProducer<> {
0018 public:
0019   MultiHitFromChi2EDProducer(const edm::ParameterSet& iConfig);
0020   ~MultiHitFromChi2EDProducer() override = default;
0021
0022   static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
0023
0024   void produce(edm::Event& iEvent, const edm::EventSetup& iSetup) override;
0025
0026 private:
0027   edm::EDGetTokenT<IntermediateHitDoublets> doubletToken_;
0028
0029   edm::RunningAverage localRA_;
0030
0031   MultiHitGeneratorFromChi2 generator_;
0032 };
0033
0034 MultiHitFromChi2EDProducer::MultiHitFromChi2EDProducer(const edm::ParameterSet& iConfig)
0035     : doubletToken_(consumes<IntermediateHitDoublets>(iConfig.getParameter<edm::InputTag>("doublets"))),
0036       generator_(iConfig, consumesCollector()) {
0037   produces<RegionsSeedingHitSets>();
0038   produces<edm::OwnVector<BaseTrackerRecHit> >();
0039 }
0040
0041 void MultiHitFromChi2EDProducer::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
0042   edm::ParameterSetDescription desc;
0043
0044   desc.add<edm::InputTag>("doublets", edm::InputTag("hitPairEDProducer"));
0045
0046   MultiHitGeneratorFromChi2::fillDescriptions(desc);
0047
0048   auto label = MultiHitGeneratorFromChi2::fillDescriptionsLabel() + std::string("EDProducerDefault");
0049   descriptions.add(label, desc);
0050 }
0051
0052 void MultiHitFromChi2EDProducer::produce(edm::Event& iEvent, const edm::EventSetup& iSetup) {
0053   edm::Handle<IntermediateHitDoublets> hdoublets;
0054   iEvent.getByToken(doubletToken_, hdoublets);
0055   const auto& regionDoublets = *hdoublets;
0056
0057   const SeedingLayerSetsHits& seedingLayerHits = regionDoublets.seedingLayerHits();
0058   if (seedingLayerHits.numberOfLayersInSet() < 3) {
0059     throw cms::Exception("LogicError")
0060         << "MultiHitFromChi2EDProducer expects SeedingLayerSetsHits::numberOfLayersInSet() to be >= 3, got "
0061         << seedingLayerHits.numberOfLayersInSet()
0062         << ". This is likely caused by a configuration error of this module, HitPairEDProducer, or "
0063            "SeedingLayersEDProducer.";
0064   }
0065
0066   auto seedingHitSets = std::make_unique<RegionsSeedingHitSets>();
0067   if (regionDoublets.empty()) {
0068     iEvent.put(std::move(seedingHitSets));
0069     return;
0070   }
0071   seedingHitSets->reserve(regionDoublets.regionSize(), localRA_.upper());
0072   generator_.initES(iSetup);
0073
0074   // match-making of pair and triplet layers
0075   std::vector<LayerTriplets::LayerSetAndLayers> trilayers = LayerTriplets::layers(seedingLayerHits);
0076
0077   OrderedMultiHits multihits;
0078   multihits.reserve(localRA_.upper());
0079   std::vector<std::unique_ptr<BaseTrackerRecHit> > refittedHitStorage;
0080   refittedHitStorage.reserve(localRA_.upper() * 2);
0081
0082   LogDebug("MultiHitFromChi2EDProducer") << "Creating multihits for " << regionDoublets.regionSize() << " regions, and "
0083                                          << trilayers.size() << " pair+3rd layers from "
0084                                          << regionDoublets.layerPairsSize() << " layer pairs";
0085
0086   LayerHitMapCache hitCache;
0087   for (const auto& regionLayerPairs : regionDoublets) {
0088     const TrackingRegion& region = regionLayerPairs.region();
0089
0090     auto seedingHitSetsFiller = RegionsSeedingHitSets::dummyFiller();
0091     seedingHitSetsFiller = seedingHitSets->beginRegion(&region);
0092
0093     hitCache.clear();
0094     hitCache.extend(regionLayerPairs.layerHitMapCache());
0095
0096     LogTrace("MultiHitFromChi2EDProducer") << " starting region";
0097
0098     for (const auto& layerPair : regionLayerPairs) {
0099       LogTrace("MultiHitFromChi2EDProducer")
0100           << "  starting layer pair " << layerPair.innerLayerIndex() << "," << layerPair.outerLayerIndex();
0101
0102       auto found = std::find_if(trilayers.begin(), trilayers.end(), [&](const LayerTriplets::LayerSetAndLayers& a) {
0103         return a.first[0].index() == layerPair.innerLayerIndex() && a.first[1].index() == layerPair.outerLayerIndex();
0104       });
0105       if (found == trilayers.end()) {
0106         auto exp = cms::Exception("LogicError") << "Did not find the layer pair from vector<pair+third layers>. This "
0107                                                    "is a sign of some internal inconsistency\n";
0108         exp << "I was looking for layer pair " << layerPair.innerLayerIndex() << "," << layerPair.outerLayerIndex()
0109             << ". Triplets have the following pairs:\n";
0110         for (const auto& a : trilayers) {
0111           exp << " " << a.first[0].index() << "," << a.first[1].index() << ": 3rd layers";
0112           for (const auto& b : a.second) {
0113             exp << " " << b.index();
0114           }
0115           exp << "\n";
0116         }
0117         throw exp;
0118       }
0119       const auto& thirdLayers = found->second;
0120
0121       generator_.hitSets(region, multihits, layerPair.doublets(), thirdLayers, hitCache, refittedHitStorage);
0122
0123 #ifdef EDM_ML_DEBUG
0124       LogTrace("MultiHitFromChi2EDProducer")
0125           << "  created " << multihits.size() << " multihits for layer pair " << layerPair.innerLayerIndex() << ","
0126           << layerPair.outerLayerIndex() << " and 3rd layers";
0127       for (const auto& l : thirdLayers) {
0128         LogTrace("MultiHitFromChi2EDProducer") << "   " << l.index();
0129       }
0130 #endif
0131
0132       for (const SeedingHitSet& hitSet : multihits) {
0133         seedingHitSetsFiller.emplace_back(hitSet);
0134       }
0135       multihits.clear();
0136     }
0137   }
0138   localRA_.update(seedingHitSets->size());
0139
0140   auto storage = std::make_unique<edm::OwnVector<BaseTrackerRecHit> >();
0141   storage->reserve(refittedHitStorage.size());
0142   for (auto& ptr : refittedHitStorage)
0143     storage->push_back(ptr.release());
0144
0145   seedingHitSets->shrink_to_fit();
0146   storage->shrink_to_fit();
0147   iEvent.put(std::move(seedingHitSets));
0148   iEvent.put(std::move(storage));
0149 }
0150
0151 #include "FWCore/PluginManager/interface/ModuleDef.h"
0152 #include "FWCore/Framework/interface/MakerMacros.h"
0153 DEFINE_FWK_MODULE(MultiHitFromChi2EDProducer);