OscarProducer.cc

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#include "FWCore/PluginManager/interface/PluginManager.h"

#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include "SimG4Core/Application/interface/OscarProducer.h"
#include "SimG4Core/Notification/interface/G4SimEvent.h"

#include "SimDataFormats/Track/interface/SimTrackContainer.h"
#include "SimDataFormats/Vertex/interface/SimVertexContainer.h"
#include "SimDataFormats/TrackingHit/interface/PSimHitContainer.h"
#include "SimDataFormats/CaloHit/interface/PCaloHitContainer.h"
#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"

#include "SimG4Core/Watcher/interface/SimProducer.h"

#include "FWCore/Utilities/interface/Exception.h"
#include "SimG4Core/Notification/interface/SimG4Exception.h"

#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/Utilities/interface/RandomNumberGenerator.h"
#include "Randomize.hh"

#include "FWCore/Concurrency/interface/SharedResourceNames.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include <iostream>

namespace edm {
    class StreamID;
}

namespace {
    //
    // this machinery allows to set CLHEP static engine
    // to the one defined by RandomNumberGenerator service
    // at the beginning of an event, and reset it back to
    // "default-default" at the end of the event;
    // Dave D. has decided to implement it this way because
    // we don't know if there're other modules using CLHEP
    // static engine, thus we want to ensure that the one
    // we use for OscarProducer is unique to OscarProducer
    //
    // !!! This not only sets the random engine used by GEANT.
    // There are a few SimWatchers/SimProducers that generate
    // random number and also use the global CLHEP random engine
    // set by this code. If we ever change this design be careful
    // not to forget about them!!!

    class StaticRandomEngineSetUnset {
    public:
        StaticRandomEngineSetUnset(edm::StreamID const&);
        explicit StaticRandomEngineSetUnset(CLHEP::HepRandomEngine * engine);
        ~StaticRandomEngineSetUnset();
    private:
        CLHEP::HepRandomEngine* m_currentEngine;
        CLHEP::HepRandomEngine* m_previousEngine;
    };
}

OscarProducer::OscarProducer(edm::ParameterSet const & p)
{
  // Random number generation not allowed here
  StaticRandomEngineSetUnset random(nullptr);

  usesResource(edm::SharedResourceNames::kGEANT);
  usesResource(edm::SharedResourceNames::kCLHEPRandomEngine);

  consumes<edm::HepMCProduct>(p.getParameter<edm::InputTag>("HepMCProductLabel"));
  m_runManager.reset(new RunManager(p, consumesCollector()));

  produces<edm::SimTrackContainer>().setBranchAlias("SimTracks");
  produces<edm::SimVertexContainer>().setBranchAlias("SimVertices");
  produces<edm::PSimHitContainer>("TrackerHitsPixelBarrelLowTof");
  produces<edm::PSimHitContainer>("TrackerHitsPixelBarrelHighTof");
  produces<edm::PSimHitContainer>("TrackerHitsTIBLowTof");
  produces<edm::PSimHitContainer>("TrackerHitsTIBHighTof");
  produces<edm::PSimHitContainer>("TrackerHitsTIDLowTof");
  produces<edm::PSimHitContainer>("TrackerHitsTIDHighTof");
  produces<edm::PSimHitContainer>("TrackerHitsPixelEndcapLowTof");
  produces<edm::PSimHitContainer>("TrackerHitsPixelEndcapHighTof");
  produces<edm::PSimHitContainer>("TrackerHitsTOBLowTof");
  produces<edm::PSimHitContainer>("TrackerHitsTOBHighTof");
  produces<edm::PSimHitContainer>("TrackerHitsTECLowTof");
  produces<edm::PSimHitContainer>("TrackerHitsTECHighTof");
    
  produces<edm::PSimHitContainer>("TotemHitsT1");
  produces<edm::PSimHitContainer>("TotemHitsT2Gem");
  produces<edm::PSimHitContainer>("TotemHitsRP");
  produces<edm::PSimHitContainer>("FP420SI");
  produces<edm::PSimHitContainer>("BSCHits");
  produces<edm::PSimHitContainer>("PLTHits");
  produces<edm::PSimHitContainer>("BCM1FHits");
  produces<edm::PSimHitContainer>("BHMHits");
  produces<edm::PSimHitContainer>("FastTimerHitsBarrel");
  produces<edm::PSimHitContainer>("FastTimerHitsEndcap");

  produces<edm::PCaloHitContainer>("EcalHitsEB");
  produces<edm::PCaloHitContainer>("EcalHitsEE");
  produces<edm::PCaloHitContainer>("EcalHitsES");
  produces<edm::PCaloHitContainer>("HcalHits");
  produces<edm::PCaloHitContainer>("CaloHitsTk");
  produces<edm::PCaloHitContainer>("HGCHitsEE");
  produces<edm::PCaloHitContainer>("HGCHitsHEfront");
  produces<edm::PCaloHitContainer>("HGCHitsHEback");

  produces<edm::PSimHitContainer>("MuonDTHits");
  produces<edm::PSimHitContainer>("MuonCSCHits");
  produces<edm::PSimHitContainer>("MuonRPCHits");
  produces<edm::PSimHitContainer>("MuonGEMHits");
  produces<edm::PSimHitContainer>("MuonME0Hits");

  produces<edm::PCaloHitContainer>("CastorPL");
  produces<edm::PCaloHitContainer>("CastorFI");
  produces<edm::PCaloHitContainer>("CastorBU");
  produces<edm::PCaloHitContainer>("CastorTU");
  produces<edm::PCaloHitContainer>("EcalTBH4BeamHits");
  produces<edm::PCaloHitContainer>("HcalTB06BeamHits");
  produces<edm::PCaloHitContainer>("ZDCHITS"); 
  produces<edm::PCaloHitContainer>("ChamberHits"); 
  produces<edm::PCaloHitContainer>("FibreHits"); 
  produces<edm::PCaloHitContainer>("WedgeHits"); 
  produces<edm::PCaloHitContainer>("HFNoseHits");

  //register any products 
  m_producers = m_runManager->producers();

  for(Producers::iterator itProd = m_producers.begin();
      itProd != m_producers.end(); ++itProd) {

    (*itProd)->registerProducts(*this);
  }

  //UIsession manager for message handling
  m_UIsession.reset(new CustomUIsession());
}

OscarProducer::~OscarProducer() 
{ }

void 
OscarProducer::beginRun(const edm::Run&, const edm::EventSetup & es)
{
  // Random number generation not allowed here
  StaticRandomEngineSetUnset random(nullptr);
  m_runManager->initG4(es);
}

void 
OscarProducer::endRun(const edm::Run&, const edm::EventSetup&)
{
  m_runManager->stopG4();
}

void OscarProducer::produce(edm::Event & e, const edm::EventSetup & es)
{
  StaticRandomEngineSetUnset random(e.streamID());

  auto& sTk = 
    m_runManager->sensTkDetectors();
  auto& sCalo =
    m_runManager->sensCaloDetectors();

  try { m_runManager->produce(e, es); }
  catch ( const SimG4Exception& simg4ex ) {
       
    edm::LogInfo("SimG4CoreApplication") << "SimG4Exception caght! " 
                     << simg4ex.what();
    m_runManager->stopG4();
       
    throw edm::Exception( edm::errors::EventCorruption ) 
      << "SimG4CoreApplication exception in generation of event "
      << e.id() << " in stream " << e.streamID() << " \n"
      << simg4ex.what();
  }

  std::unique_ptr<edm::SimTrackContainer>
    p1(new edm::SimTrackContainer);
  std::unique_ptr<edm::SimVertexContainer>
    p2(new edm::SimVertexContainer);
  G4SimEvent * evt = m_runManager->simEvent();
  evt->load(*p1);
  evt->load(*p2);   

  e.put(std::move(p1));
  e.put(std::move(p2));
  
  for (auto & tracker : sTk) {

    const std::vector<std::string>& v = tracker->getNames();
    for (auto & name : v) {

      std::unique_ptr<edm::PSimHitContainer>
    product(new edm::PSimHitContainer);
      tracker->fillHits(*product,name);
      e.put(std::move(product),name);
    }
  }
  for (auto & calo : sCalo) {

    const std::vector<std::string>& v = calo->getNames();

    for (auto & name : v) {

      std::unique_ptr<edm::PCaloHitContainer>
    product(new edm::PCaloHitContainer);
      calo->fillHits(*product,name);
      e.put(std::move(product),name);
    }
  }

  for(auto & prod :  m_producers) {
    prod.get()->produce(e,es);
  }
}

StaticRandomEngineSetUnset::StaticRandomEngineSetUnset(
      edm::StreamID const& streamID)
{
  edm::Service<edm::RandomNumberGenerator> rng;
  if ( ! rng.isAvailable()) {
    throw cms::Exception("Configuration")
      << "The OscarProducer module requires the RandomNumberGeneratorService\n"
      "which is not present in the configuration file.  You must add the service\n"
      "in the configuration file if you want to run OscarProducer";
  }
  m_currentEngine = &(rng->getEngine(streamID));

  // Must use G4Random instead of CLHEP::HepRandom even for the serial
  // version if Geant4 has been built with MT enabled. If G4 was built
  // with MT disabled G4Random is defined to be CLHEP::HepRandom,
  // preserving the old behaviour.
  m_previousEngine = G4Random::getTheEngine();
  G4Random::setTheEngine(m_currentEngine);
}

StaticRandomEngineSetUnset::StaticRandomEngineSetUnset(
      CLHEP::HepRandomEngine * engine) 
{
  m_currentEngine = engine;
  m_previousEngine = G4Random::getTheEngine();
  G4Random::setTheEngine(m_currentEngine);
}

StaticRandomEngineSetUnset::~StaticRandomEngineSetUnset() 
{
  G4Random::setTheEngine(m_previousEngine);
}

DEFINE_FWK_MODULE(OscarProducer);