RpcRdoToPrepDataToolMT.cxx

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/
 
#include "RpcRdoToPrepDataToolMT.h"
 
#include "GaudiKernel/ThreadLocalContext.h"
#include "MuonCnvToolInterfaces/IDC_Helper.h"
#include "MuonPrepRawData/MuonPrepDataContainer.h"
#include "MuonRPC_CnvTools/IRPC_RDO_Decoder.h"
#include "MuonReadoutGeometry/RpcReadoutElement.h"
#include "MuonTrigCoinData/RpcCoinDataContainer.h"
#include "TrkSurfaces/Surface.h"
#include "xAODMuonPrepData/RpcStripAuxContainer.h"
#include "GeoModelHelpers/throwExcept.h"
using namespace MuonGM;
using namespace Trk;
 
Muon::RpcRdoToPrepDataToolMT::State::State(
    const RpcIdHelper& idHelper,
    const SG::WriteHandleKey<xAOD::RpcStripContainer>& key,
    const EventContext& ctx)
    : m_rpcIdHelper{idHelper} {
  if (!key.empty()) {
    m_xaodHandle = SG::WriteHandle<xAOD::RpcStripContainer>(key, ctx);
    if (m_xaodHandle.record(std::make_unique<xAOD::RpcStripContainer>(),
                            std::make_unique<xAOD::RpcStripAuxContainer>()).isFailure()) {
      // Throwing exceptions in a ctor is not nice, but on the other hand, this
      // should never happen and we need to handle the StatusCode
      THROW_EXCEPTION("Unable to record ");
    };
  }
}
 
Muon::RpcPrepDataCollection*
Muon::RpcRdoToPrepDataToolMT::State::getPrepCollection(
    const IdentifierHash& rpcHashId, MsgStream& msg) {
  std::unique_ptr<Muon::RpcPrepDataCollection>& coll =
      m_rpcPrepDataCollections[rpcHashId];
  if (!coll) {
    Identifier id{0};
    if (m_rpcIdHelper.get_id(rpcHashId, id, &m_modContext)) {
      msg << MSG::ERROR << "Module hash creation failed. " << id << endmsg;
      return nullptr;
    }
    coll = std::make_unique<Muon::RpcPrepDataCollection>(rpcHashId);
    coll->setIdentifier(id);
  }
  return coll.get();
}
Muon::RpcCoinDataCollection*
Muon::RpcRdoToPrepDataToolMT::State::getCoinCollection(
    const IdentifierHash& rpcHashId, MsgStream& msg) {
  std::unique_ptr<Muon::RpcCoinDataCollection>& coll =
      m_rpcCoinDataCollections[rpcHashId];
  if (!coll) {
    Identifier id{0};
    if (m_rpcIdHelper.get_id(rpcHashId, id, &m_modContext)) {
      msg << MSG::ERROR << "Module hash creation failed. " << id << endmsg;
      return nullptr;
    }
    coll = std::make_unique<Muon::RpcCoinDataCollection>(rpcHashId);
    coll->setIdentifier(id);
  }
  return coll.get();
}
 
Muon::RpcRdoToPrepDataToolMT::RpcRdoToPrepDataToolMT(const std::string& type,
                                                     const std::string& name,
                                                     const IInterface* parent)
    : base_class(type, name, parent) {}
 
//___________________________________________________________________________
StatusCode Muon::RpcRdoToPrepDataToolMT::initialize() {
  // perform necessary one-off initialization
 
  ATH_MSG_INFO("properties are ");
  ATH_MSG_INFO("produceRpcCoinDatafromTriggerWords "
               << m_producePRDfromTriggerWords);
  ATH_MSG_INFO("reduceCablingOverlap               " << m_reduceCablingOverlap);
  ATH_MSG_INFO("solvePhiAmbiguities                " << m_solvePhiAmbiguities);
  ATH_MSG_INFO("timeShift                          " << m_timeShift);
  if (m_solvePhiAmbiguities && (!m_reduceCablingOverlap)) {
    ATH_MSG_WARNING(
        "Inconsistent setting of properties (solvePhiAmbiguities entails "
        "reduceCablingOverlap)");
    ATH_MSG_WARNING("Resetting reduceCablingOverlap to true");
    m_reduceCablingOverlap = true;
  }
  ATH_MSG_INFO("etaphi_coincidenceTime             "
               << m_etaphi_coincidenceTime);
  ATH_MSG_INFO("overlap_timeTolerance              "
               << m_overlap_timeTolerance);
  ATH_MSG_INFO("Correct prd time from cool db      " << m_RPCInfoFromDb);
  ATH_CHECK(m_rpcRdoDecoderTool.retrieve());
  ATH_CHECK(m_idHelperSvc.retrieve());
  ATH_CHECK(m_rpcReadKey.initialize());
  ATH_CHECK(m_readKey.initialize(m_RPCInfoFromDb));
  ATH_CHECK(m_rdoContainerKey.initialize());
  ATH_CHECK(m_rdoNrpcContainerKey.initialize(!m_rdoNrpcContainerKey.empty()));
  ATH_CHECK(m_nRpcCablingKey.initialize(!m_rdoNrpcContainerKey.empty()));  
  // If we don't configure the NRPC RDO
  // key, the cabling is needed either.
  ATH_CHECK(m_rpcPrepDataContainerKey.initialize());
  ATH_CHECK(m_rpcCoinDataContainerKey.initialize());
  ATH_CHECK(m_eventInfo.initialize());
  ATH_CHECK(m_muDetMgrKey.initialize());
  ATH_CHECK(m_prdContainerCacheKey.initialize(SG::AllowEmpty));
  ATH_CHECK(m_coindataContainerCacheKey.initialize(SG::AllowEmpty));
  ATH_CHECK(m_xAODKey.initialize(!m_xAODKey.empty()));
  return StatusCode::SUCCESS;
}
StatusCode Muon::RpcRdoToPrepDataToolMT::loadProcessedChambers(
    const EventContext& ctx, State& state) const {
  if (!m_prdContainerCacheKey.key().empty()) {
    SG::UpdateHandle<RpcPrepDataCollection_Cache> update{m_prdContainerCacheKey,
                                                         ctx};
    if (!update.isValid()) {
      ATH_MSG_FATAL("Invalid UpdateHandle " << m_prdContainerCacheKey.key());
      return StatusCode::FAILURE;
    }
    state.m_prepDataCont =
        std::make_unique<Muon::RpcPrepDataContainer>(update.ptr());
    for (const RpcPrepDataCollection* coll : *state.m_prepDataCont) {
      state.m_decodedOfflineHashIds.insert(coll->identifyHash());
    }
  } else
    state.m_prepDataCont = std::make_unique<Muon::RpcPrepDataContainer>(
        m_idHelperSvc->rpcIdHelper().module_hash_max());
 
  if (m_coindataContainerCacheKey.key().empty()) {
    // without the cache we just record the container
    state.m_coinDataCont = std::make_unique<Muon::RpcCoinDataContainer>(
        m_idHelperSvc->rpcIdHelper().module_hash_max());
  } else {
    // use the cache to get the container
    SG::UpdateHandle<RpcCoinDataCollection_Cache> update{
        m_coindataContainerCacheKey, ctx};
    if (!update.isValid()) {
      ATH_MSG_FATAL("Invalid UpdateHandle "
                    << m_coindataContainerCacheKey.key());
      return StatusCode::FAILURE;
    }
    state.m_coinDataCont =
        std::make_unique<Muon::RpcCoinDataContainer>(update.ptr());
    for (const RpcCoinDataCollection* coll : *state.m_coinDataCont) {
      state.m_decodedOfflineHashIds.insert(coll->identifyHash());
    }
  }
 
  return StatusCode::SUCCESS;
}
StatusCode Muon::RpcRdoToPrepDataToolMT::decode(const EventContext& ctx, 
                                                const std::vector<IdentifierHash>& idVect) const {
  ATH_MSG_DEBUG(
      "Calling Core decode function from MT decode function (hash vector)");
  State state(m_idHelperSvc->rpcIdHelper(), m_xAODKey, ctx);
  ATH_CHECK(loadProcessedChambers(ctx, state));
 
  ATH_CHECK(decodeImpl(ctx, state, idVect, true));
  ATH_CHECK(processNrpcRdo(ctx, state));
  ATH_MSG_DEBUG("Core decode processed in MT decode (hash vector)");
 
  ATH_CHECK(transferAndRecordPrepData(ctx, state));
  ATH_CHECK(transferAndRecordCoinData(ctx, state));
 
  return StatusCode::SUCCESS;
}
 
StatusCode Muon::RpcRdoToPrepDataToolMT::decode(
    const EventContext& ctx, const std::vector<uint32_t>& robIds) const {
  ATH_MSG_DEBUG(
      "Calling Core decode function from MT decode function (ROB vector)");
  State state(m_idHelperSvc->rpcIdHelper(), m_xAODKey, ctx);
  ATH_CHECK(loadProcessedChambers(ctx, state));
 
  ATH_CHECK(decodeImpl(ctx, state, robIds, true));
  ATH_CHECK(processNrpcRdo(ctx, state));
  ATH_MSG_DEBUG("Core decode processed in MT decode (ROB vector)");
 
  ATH_CHECK(transferAndRecordPrepData(ctx, state));
  ATH_CHECK(transferAndRecordCoinData(ctx, state));
 
  return StatusCode::SUCCESS;
}
StatusCode Muon::RpcRdoToPrepDataToolMT::provideEmptyContainer(
    const EventContext& ctx) const {
  State state(m_idHelperSvc->rpcIdHelper(), m_xAODKey, ctx);
  ATH_CHECK(loadProcessedChambers(ctx, state));
  ATH_CHECK(transferAndRecordPrepData(ctx, state));
  ATH_CHECK(transferAndRecordCoinData(ctx, state));
  return StatusCode::SUCCESS;
}
 
StatusCode Muon::RpcRdoToPrepDataToolMT::transferAndRecordPrepData(
    const EventContext& ctx, State& state) const {
 
  for (auto& [hash, collection] : state.m_rpcPrepDataCollections) {
    if (!collection || collection->empty())
      continue;
    // If not present, get a write lock for the hash and move collection
    RpcPrepDataContainer::IDC_WriteHandle lock =
        state.m_prepDataCont->getWriteHandle(hash);
    if (lock.alreadyPresent()) {
      ATH_MSG_DEBUG("RpcPrepDataCollection already contained in IDC "
                    << m_idHelperSvc->toString(collection->identify()));
      continue;
    }
    ATH_CHECK(lock.addOrDelete(std::move(collection)));
    ATH_MSG_DEBUG("PRD hash " << hash << " has been moved to cache container");
  }
  state.m_rpcPrepDataCollections.clear();
 
  if (msgLvl(MSG::DEBUG)) {
    for (const auto& [hash, ptr] : state.m_prepDataCont->GetAllHashPtrPair()) {
      ATH_MSG_DEBUG("Contents of CONTAINER in this view : " << hash);
    }
  }
  SG::WriteHandle<Muon::RpcPrepDataContainer> rpcPRDHandle{
      m_rpcPrepDataContainerKey, ctx};
  ATH_CHECK(rpcPRDHandle.record(std::move(state.m_prepDataCont)));
  ATH_MSG_DEBUG("Created container " << m_rpcPrepDataContainerKey.key());
 
  return StatusCode::SUCCESS;
}
 
StatusCode Muon::RpcRdoToPrepDataToolMT::transferAndRecordCoinData(
    const EventContext& ctx, State& state) const {
  if (!m_producePRDfromTriggerWords) {
    return StatusCode::SUCCESS;
  }
 
  // Take localContainer and transfer contents to rpcCoinHandle
  for (auto& [hash, collection] : state.m_rpcCoinDataCollections) {
    if (!collection || collection->empty())
      continue;
    // If not present, get a write lock for the hash and move collection
    RpcCoinDataContainer::IDC_WriteHandle lock =
        state.m_coinDataCont->getWriteHandle(hash);
    if (lock.alreadyPresent()) {
      ATH_MSG_DEBUG("RpcCoinDataCollection already contained in IDC "
                    << m_idHelperSvc->toString(collection->identify()));
      continue;
    }
    ATH_CHECK(lock.addOrDelete(std::move(collection)));
    ATH_MSG_DEBUG("Coin hash " << hash << " has been moved to cache container");
  }
  state.m_rpcCoinDataCollections.clear();
  if (msgLvl(MSG::DEBUG)) {
    for (const auto& [hash, ptr] : state.m_coinDataCont->GetAllHashPtrPair()) {
      ATH_MSG_DEBUG("Contents of LOCAL in this view : " << hash);
    }
  }
  SG::WriteHandle<Muon::RpcCoinDataContainer> rpcCoinHandle{
      m_rpcCoinDataContainerKey, ctx};
  ATH_CHECK(rpcCoinHandle.record(std::move(state.m_coinDataCont)));
 
  ATH_MSG_DEBUG("Created container " << m_rpcCoinDataContainerKey.key());
  // For additional information on the contents of the cache-based container,
  // this function can be used printMTCoinData (*rpcCoinHandle);
 
  return StatusCode::SUCCESS;
}
 
//___________________________________________________________________________
StatusCode Muon::RpcRdoToPrepDataToolMT::decodeImpl(const EventContext& ctx, 
                                                    State& state, 
                                                    const std::vector<IdentifierHash>& idVect,
                                                    bool firstTimeInTheEvent) const {
  int sizeVectorRequested = idVect.size();
  ATH_MSG_DEBUG("Decode method called for " << sizeVectorRequested
                                            << " offline collections");
  if (sizeVectorRequested == 0)
    ATH_MSG_DEBUG("Decoding the entire event");
 
  // create an empty vector of hash ids to be decoded (will be filled if
  // RoI-based and left empty if full-scan)
  std::vector<IdentifierHash> idVectToBeDecoded;
  idVectToBeDecoded.reserve(idVect.size());
 
  if (firstTimeInTheEvent) {
    state.m_fullEventDone = sizeVectorRequested == 0;
  } else {
    if (state.m_fullEventDone) {
      ATH_MSG_DEBUG("Whole event has already been decoded; nothing to do.");
      return StatusCode::SUCCESS;
    }
    if (sizeVectorRequested == 0)
      state.m_fullEventDone = true;
  }
 
  if (sizeVectorRequested != 0) {
    // the program goes in here only if RoI-based decoding has been called and
    // the full event is not already decoded this code ensures decoding of every
    // offline hash id is called only once
    for (const IdentifierHash& itHashId : idVect) {
      if (state.m_decodedOfflineHashIds.insert(itHashId).second)
        idVectToBeDecoded.push_back(itHashId);
    }
    if (idVectToBeDecoded.empty()) {
      ATH_MSG_DEBUG(
          "All requested offline collections have already been decoded; "
          "nothing to do.");
      return StatusCode::SUCCESS;
    } else {
      ATH_MSG_DEBUG(idVectToBeDecoded.size()
                    << " offline collections have not yet been decoded and "
                       "will be decoded now.");
      if (msgLvl(MSG::VERBOSE)) {
        ATH_MSG_VERBOSE(
            "The list of offline collection hash ids to be decoded:");
        for (const IdentifierHash& itHashId : idVectToBeDecoded)
          ATH_MSG_VERBOSE(itHashId << " ");
      }
    }
  }
 
  // if RPC decoding is switched off stop here
  if (!m_decodeData) {
    ATH_MSG_DEBUG(
        "Stored empty container. Decoding RPC RDO into RPC PrepRawData is "
        "switched off");
    return StatusCode::SUCCESS;
  }
 
  ATH_MSG_DEBUG("Decoding RPC RDO into RPC PrepRawData");
 
  SG::ReadCondHandle<RpcCablingCondData> cablingCondData{m_rpcReadKey, ctx};
  const RpcCablingCondData* rpcCabling{*cablingCondData};
 
  // if the vector requested has size 0, we need to perform a scan of the entire
  // RDO container otherwise select the pads to be decoded
  std::vector<IdentifierHash> rdoHashVec;
  if (sizeVectorRequested != 0) {
    ATH_MSG_DEBUG(
        "Looking for pads IdHash to be decoded for the requested collection "
        "Ids");
    ATH_CHECK(rpcCabling->giveRDO_fromPRD(idVectToBeDecoded, rdoHashVec));
  }
 
  IdContext rpcContext = m_idHelperSvc->rpcIdHelper().module_context();
 
  // we come here if the rdo container is already in SG (for example in MC RDO!)
  ATH_MSG_DEBUG("Retrieving Rpc PAD container from the store");
  auto rdoContainerHandle = SG::makeHandle(m_rdoContainerKey, ctx);
  if (!rdoContainerHandle.isValid()) {
    ATH_MSG_ERROR("Retrieval of RPC RDO container failed !");
    return StatusCode::FAILURE;
  }
 
  if (rdoContainerHandle->numberOfCollections() == 0) {
    // empty pad container - no rpc rdo in this event
    ATH_MSG_DEBUG("Empty pad container - no rpc rdo in this event ");
    return StatusCode::SUCCESS;
  }
  ATH_MSG_DEBUG("Not empty pad container in this event ");
 
  // start here to process the RDO (for the full event of for a fraction of it)
  bool processingetaview{true}, processingphiview{false};
  if (!m_solvePhiAmbiguities)
    processingetaview = false;
  bool doingSecondLoopAmbigColls = false;
  while (processingetaview || processingphiview || (!m_solvePhiAmbiguities)) {
    int ipad{0}, nPrepRawData{0}, nPhiPrepRawData{0}, nEtaPrepRawData{0};
    if (processingphiview)
      state.m_ambiguousCollections.clear();
    if (msgLvl(MSG::DEBUG)) {
      if (processingetaview)
        ATH_MSG_DEBUG("*** Processing eta view ");
      else
        ATH_MSG_DEBUG("*** Processing phi view ");
    }
    // seeded decoding
    if (sizeVectorRequested != 0) {
      ATH_MSG_DEBUG("Start loop over pads hashes - seeded mode ");
      for (const IdentifierHash& iPadHash : rdoHashVec) {
        const RpcPad* rdoColl = rdoContainerHandle->indexFindPtr(iPadHash);
        if (!rdoColl) {
          ATH_MSG_DEBUG("Requested pad with online id "
                        << iPadHash << " not found in the rdoContainerHandle.");
          continue;
        }
        ++ipad;
 
        ATH_MSG_DEBUG("A new pad here n. " << ipad << ", online id "
                                           << (int)(rdoColl->identifyHash())
                                           << ", with " << rdoColl->size()
                                           << " CM inside ");
        ATH_CHECK(processPad(ctx, state, rdoColl, processingetaview,
                             processingphiview, nPrepRawData, idVectToBeDecoded, doingSecondLoopAmbigColls));
 
      }       // end loop over requested pads hashes
    } else {  // unseeded // whole event
      ATH_MSG_DEBUG("Start loop over pads - unseeded mode ");
      for (const RpcPad* rdoColl : *rdoContainerHandle) {
        // loop over all elements of the pad container
        if (rdoColl->empty())
          continue;
        ++ipad;
        ATH_MSG_DEBUG("A new pad here n. " << ipad << ", online id "
                                           << (int)(rdoColl->identifyHash())
                                           << ", with " << rdoColl->size()
                                           << " CM inside ");
 
        ATH_CHECK(processPad(ctx, state, rdoColl, processingetaview,
                             processingphiview, nPrepRawData, idVectToBeDecoded, doingSecondLoopAmbigColls));
      }  // end loop over pads
    }
 
    if (processingetaview) {
      processingetaview = false;
      processingphiview = true;
      nEtaPrepRawData = nPrepRawData;
      ATH_MSG_DEBUG("*** " << nEtaPrepRawData << " eta PrepRawData registered");
    } else {
      processingphiview = false;
      nPhiPrepRawData = nPrepRawData - nEtaPrepRawData;
      ATH_MSG_DEBUG("*** " << nPhiPrepRawData << " phi PrepRawData registered");
      if (!state.m_ambiguousCollections.empty()) {
        // loop again for unrequested collections stored with ambiguous phi hits
        doingSecondLoopAmbigColls = true;
        processingetaview = true;
        ATH_MSG_DEBUG(state.m_ambiguousCollections.size()
                      << " ambiguous collections were stored:");
        idVectToBeDecoded.clear();
        rdoHashVec.clear();
        for (const IdentifierHash& itAmbiColl : state.m_ambiguousCollections) {
          ATH_MSG_DEBUG((int)itAmbiColl << " ");
          idVectToBeDecoded.push_back(itAmbiColl);
          state.m_decodedOfflineHashIds.insert(itAmbiColl);
        }
        ATH_CHECK(rpcCabling->giveRDO_fromPRD(idVectToBeDecoded, rdoHashVec));
      }
    }
    if (!m_solvePhiAmbiguities) {
      ATH_MSG_DEBUG("*** " << nPrepRawData << " PrepRawData registered");
      break;
    }
  }
 
  ATH_MSG_DEBUG("*** Final Cleanup ");
  return StatusCode::SUCCESS;
}
 
//___________________________________________________________________________
StatusCode Muon::RpcRdoToPrepDataToolMT::decodeImpl(
    const EventContext& ctx, State& state, const std::vector<uint32_t>& robIds,
    bool firstTimeInTheEvent) const {
  // ROB-based decoding is only applied in seeded mode. Full scan should use the
  // hashId-based method with empty requested collections vector.
 
  int sizeVectorRequested = robIds.size();
  ATH_MSG_DEBUG("Decode method called for " << sizeVectorRequested << " ROBs");
 
  std::vector<uint32_t> robIdsToBeDecoded;
  robIdsToBeDecoded.reserve(robIds.size());
 
  if (firstTimeInTheEvent) {
    state.m_fullEventDone = false;
  } else {
    if (state.m_fullEventDone) {
      ATH_MSG_DEBUG("Whole event has already been decoded; nothing to do.");
      return StatusCode::SUCCESS;
    }
  }
 
  // check which of the requested robs are not yet decoded
  for (uint32_t robid : robIds) {
    if (state.m_decodedRobIds.insert(robid).second)
      robIdsToBeDecoded.push_back(robid);
  }
 
  if (robIdsToBeDecoded.empty()) {
    ATH_MSG_DEBUG(
        "All requested ROBs have already been decoded; nothing to do.");
    return StatusCode::SUCCESS;
  }
  ATH_MSG_DEBUG(robIdsToBeDecoded.size()
                << " ROBs have not yet been decoded and will be decoded now.");
  if (msgLvl(MSG::VERBOSE)) {
    ATH_MSG_VERBOSE("The list of ROB Ids to be decoded:");
    for (uint32_t robid : robIdsToBeDecoded)
      ATH_MSG_VERBOSE("0x" << MSG::hex << robid << MSG::dec << " ");
  }
 
  SG::ReadCondHandle<RpcCablingCondData> cablingCondData{m_rpcReadKey, ctx};
  const RpcCablingCondData* rpcCabling{*cablingCondData};
 
  // if all robs will be decoded after the current execution of the method, set
  // the flag m_fullEventDone
  if (state.m_decodedRobIds.size() == rpcCabling->giveFullListOfRobIds().size())
    state.m_fullEventDone = true;
 
  // if RPC decoding is switched off stop here
  if (!m_decodeData) {
    ATH_MSG_DEBUG(
        "Stored empty container. Decoding RPC RDO into RPC PrepRawData is "
        "switched off");
    return StatusCode::SUCCESS;
  }
 
  ATH_MSG_DEBUG("Decoding RPC RDO into RPC PrepRawData");
 
  // we come here if the rdo container is already in SG (for example in MC RDO!)
  ATH_MSG_DEBUG("Retrieving Rpc PAD container from the store");
  auto rdoContainerHandle = SG::makeHandle(m_rdoContainerKey, ctx);
  if (!rdoContainerHandle.isValid()) {
    ATH_MSG_WARNING("Retrieval of RPC RDO container failed !");
    return StatusCode::SUCCESS;
  }
 
  // here the RDO container is retrieved and filled -whatever input type we
  // start with- => check the size
  if (rdoContainerHandle->empty()) {
    // empty pad container - no rpc rdo in this event
    ATH_MSG_DEBUG("Empty pad container - no rpc rdo in this event ");
    return StatusCode::SUCCESS;
  }
  ATH_MSG_DEBUG("Not empty pad container in this event ");
 
  // obtain a list of PADs (RDOs) to be processed
  std::vector<IdentifierHash> rdoHashVec;
  rdoHashVec.reserve(
      13 * robIdsToBeDecoded.size());  // most ROBs have 13 RDOs, some have less
  ATH_CHECK(rpcCabling->giveRDO_fromROB(robIdsToBeDecoded, rdoHashVec));
 
  // start here to process the RDOs
  bool processingetaview = true;
  bool processingphiview = false;
  if (!m_solvePhiAmbiguities)
    processingetaview = false;
  while (processingetaview || processingphiview || (!m_solvePhiAmbiguities)) {
    int ipad{0}, nPrepRawData{0}, nPhiPrepRawData{0}, nEtaPrepRawData{0};
    if (processingphiview)
      state.m_ambiguousCollections.clear();
 
    if (processingetaview)
      ATH_MSG_DEBUG("*** Processing eta view ");
    else
      ATH_MSG_DEBUG("*** Processing phi view ");
 
    // seeded decoding (for full scan, use the hashId-based method)
    ATH_MSG_DEBUG("Start loop over pads hashes - seeded mode ");
 
    for (const IdentifierHash& padHashId : rdoHashVec) {
      const RpcPad* rdoColl = rdoContainerHandle->indexFindPtr(padHashId);
      if (!rdoColl) {
        ATH_MSG_DEBUG("Requested pad with online id "
                      << (unsigned int)padHashId
                      << " not found in the rdoContainerHandle.");
        continue;
      }
      ++ipad;
      ATH_MSG_DEBUG("A new pad here n."
                    << ipad << ", online id " << (int)(rdoColl->identifyHash())
                    << ", with " << rdoColl->size() << " CM inside ");
      CHECK(processPad(ctx, state, rdoColl, processingetaview,
                       processingphiview, nPrepRawData, rdoHashVec, false));
    }
 
    if (processingetaview) {
      processingetaview = false;
      processingphiview = true;
      nEtaPrepRawData = nPrepRawData;
      ATH_MSG_DEBUG("*** " << nEtaPrepRawData << " eta PrepRawData registered");
    } else {
      processingphiview = false;
      nPhiPrepRawData = nPrepRawData - nEtaPrepRawData;
      ATH_MSG_DEBUG("*** " << nPhiPrepRawData << " phi PrepRawData registered");
    }
    if (!m_solvePhiAmbiguities) {
      ATH_MSG_DEBUG("*** " << nPrepRawData << " PrepRawData registered");
      break;
    }
  }
 
  ATH_MSG_DEBUG("*** Final Cleanup ");
  
  return StatusCode::SUCCESS;
  
}
 
StatusCode Muon::RpcRdoToPrepDataToolMT::processPad(
    const EventContext& ctx, State& state, const RpcPad* rdoColl,
    bool& processingetaview, bool& processingphiview, int& nPrepRawData,
    const std::vector<IdentifierHash>& idVect,     
    bool doingSecondLoopAmbigColls) const {
 
  const RpcIdHelper& idHelper = m_idHelperSvc->rpcIdHelper();
 
  std::set<IdentifierHash>& ambiguousCollections{state.m_ambiguousCollections};
  ATH_MSG_DEBUG("***************** Start of processPad eta/phiview "
                << processingetaview << "/" << processingphiview);
  //{processPad
  // Get pad online id and sector id
  uint16_t padId = rdoColl->onlineId();
  uint16_t sectorId = rdoColl->sector();
  ATH_MSG_DEBUG("***************** for Pad online Id "
                << padId << " m_logic sector ID " << sectorId);
 
  // Create an RPC PrepDataCollection
  Identifier oldId{0}, oldIdTrg{0};
  ATH_MSG_VERBOSE("Init pointer to RpcPrepDataCollection ");
  RpcPrepDataCollection* collection{nullptr};
  RpcCoinDataCollection* collectionTrg{nullptr};
  IdentifierHash rpcHashId{0};
 
  SG::ReadCondHandle<RpcCablingCondData> rpcCabling{m_rpcReadKey, ctx};
 
  // For each pad, loop on the coincidence matrices
  RpcPad::const_iterator itCM = rdoColl->begin();
  RpcPad::const_iterator itCM_e = rdoColl->end();
  int icm = 0;
  SG::ReadHandle<xAOD::EventInfo> evtInfo{m_eventInfo, ctx};
  for (; itCM != itCM_e; ++itCM) {
    icm++;
    bool etaview = false;
    if (!evtInfo->eventType(xAOD::EventInfo::IS_SIMULATION))
      etaview = true;
    bool highPtCm = false;
    // Get CM online Id
    uint16_t cmaId = (*itCM)->onlineId();
    ATH_MSG_DEBUG("A new CM here n. "
                  << icm << " CM online ID " << cmaId
                  << " with n. of hits =  " << (*itCM)->size());
    if (cmaId < 4) {
      ATH_MSG_DEBUG(" low pt ");
      if (cmaId < 2) {
        etaview = true;
        if (!evtInfo->eventType(xAOD::EventInfo::IS_SIMULATION)) {
          etaview = false;
        }
        ATH_MSG_DEBUG(" eta view = " << etaview);
      }
 
      else {
        ATH_MSG_DEBUG(" eta view = " << etaview);
      }
    } else {
      ATH_MSG_DEBUG(" high pt ");
      highPtCm = true;
      if (cmaId < 6) {
        etaview = true;
        if (!evtInfo->eventType(xAOD::EventInfo::IS_SIMULATION)) {
          etaview = false;
        }
        ATH_MSG_DEBUG(" eta view = " << etaview);
      } else {
        ATH_MSG_DEBUG(" eta view = " << etaview);
      }
    }
 
    if (processingetaview && (!etaview))
      continue;
    if (processingphiview && etaview)
      continue;
 
    // For each CM, loop on the fired channels
    RpcCoinMatrix::const_iterator itD = (*itCM)->begin();
    RpcCoinMatrix::const_iterator itD_e = (*itCM)->end();
    int idata = 0;
    if (itD == itD_e) {
      ATH_MSG_DEBUG("Empty CM");
    }
    for (; itD != itD_e; ++itD) {
      idata++;
      // trigger related quantities
      unsigned short threshold = 99;
      unsigned short overlap = 99;
 
      // flags defining the processing mode of this hit
      bool solvePhiAmb_thisHit = m_solvePhiAmbiguities;
      bool reduceCablOvl_thisHit = m_reduceCablingOverlap;
 
      ATH_MSG_DEBUG("A new CM Hit " << idata);
      const RpcFiredChannel* rpcChan = (*itD);
      if (msgLvl(MSG::DEBUG)) {
        ATH_MSG_DEBUG("RpcFiredChannel: bcid " << rpcChan->bcid() << " time "
                                               << rpcChan->time() << " ijk "
                                               << rpcChan->ijk());
        if (rpcChan->ijk() < 7)
          ATH_MSG_DEBUG(" ch " << rpcChan->channel());
      }
 
      // check if trigger hit
      // select the cases: ijk = 0 and high p, ijk= 6, ijk=7
      bool triggerHit = false;
      bool toSkip = false;
      processTriggerHitHypothesis(itD, itD_e, highPtCm, triggerHit, threshold,
                                  overlap, toSkip);
      if (toSkip)
        continue;
      if (triggerHit) {
        // here ijk = 6 or ijk = 0 in high pt cm
        // keep all pivot + trigger info (even if duplicated [should never
        // happen, for pivot hits])
        solvePhiAmb_thisHit = false;
        reduceCablOvl_thisHit = false;
        ATH_MSG_DEBUG(
            "RpcFiredChannel: it's a triggerHit or a lowPt coinc. in a high pt "
            "CM \n"
            << "    ijk = " << rpcChan->ijk() << " isHighPtCM " << highPtCm
            << " thr/ovl = " << threshold << "/" << overlap);
      }
 
      // here decode (get offline ids for the online indices of this hit)
      double time = 0.;
      std::vector<Identifier> digitVec{m_rpcRdoDecoderTool->getOfflineData(
          rpcChan, sectorId, padId, cmaId, time, rpcCabling.cptr())};
      time += (double)m_timeShift;
 
      int nMatchingEtaHits = 0;
      int nDuplicatePhiHits = 0;
      bool unsolvedAmbiguity = false;
      bool notFinished = true;
      // allow for 2 iterations in case there are phi digits without matching
      // eta (eta inefficiency) all eta digits, not already recorded, will be
      // registered as PrepRawData and all phi digits, not yet recorded and with
      // a eta digit in the same module and gap, will produce a PrepRawData. Phi
      // digits without a eta match will not be recorded at the first iteration.
      // If all phi digits do not have a eta match, they will be all recorded as
      // PrepRawData in the second iteration (the ambiguity will remain
      // unsolved)
      while (notFinished) {
        // Loop on the digits corresponding to the fired channel
        ATH_MSG_DEBUG(
            "size of the corresponding list of ID = " << digitVec.size());
        if (digitVec.empty()) {
          ATH_MSG_DEBUG("going to next CM hit");
          notFinished = false;
          continue;
        }
        for (const Identifier& channelId : digitVec) {
          // Prepare the prepdata for this identifier
          // channel Id
          rpcHashId = m_idHelperSvc->moduleHash(channelId);
          const Identifier parentId = idHelper.parentID(channelId);
 
          // There is some ambiguity in the channel/sectorId's, so need to
          // explicitly filter out hashIDs outside of the RoI in seeded decoding
          // mode
          if (!idVect.empty() && 
               std::find(idVect.begin(), idVect.end(), rpcHashId) == idVect.end()) {
              continue;
          }
          ATH_MSG_DEBUG("CM Hit decoded into offline Id "
                          << m_idHelperSvc->toString(channelId) << " time "
                          << time);
          ATH_MSG_DEBUG(" oldID = " << m_idHelperSvc->toString(oldId) << 
                          " oldIDtrg = " << m_idHelperSvc->toString(oldIdTrg));
          bool hasAMatchingEtaHit = 0;
          // current collection has Id "parentId"; get it from the container !
          if (triggerHit) {
            if ((oldIdTrg != parentId) || !collectionTrg) {
              // Get collection from IDC if it exists, or create it and add it
              // if not.
              ATH_MSG_DEBUG(" Looking/Creating a collection with ID = "
                            << m_idHelperSvc->toString(parentId) << " hash = "
                            << static_cast<unsigned int>(rpcHashId));
              collectionTrg = state.getCoinCollection(rpcHashId, msgStream());
              oldIdTrg = parentId;
              ATH_MSG_DEBUG(" Resetting oldIDtrg to current parentID = "
                            << m_idHelperSvc->toString(oldIdTrg));
            }
          } else if ((oldId != parentId) || !collection) {
            // Get collection from IDC if it exists, or create it and add it if
            // not.
            ATH_MSG_DEBUG(" Looking/Creating a collection with ID = "
                          << m_idHelperSvc->toString(parentId) << " hash = "
                          << static_cast<unsigned int>(rpcHashId));
            collection = state.getPrepCollection(rpcHashId, msgStream());
            oldId = parentId;
            ATH_MSG_DEBUG(" Resetting oldID to current parentID = "
                          << m_idHelperSvc->toString(oldId));
          }
 
          // check if the data has already been recorded
          // (if you want to reduce the redundancy due to cabling overlap and if
          // the collection is not empty)
          bool duplicate = false;
          if (reduceCablOvl_thisHit) {
            if (collection->begin() != collection->end()) {
              RpcPrepDataCollection::iterator it_rpcPrepData;
              ATH_MSG_VERBOSE("Check for duplicates in coll. with size "
                              << collection->size());
              int current_dbphi{0}, current_dbz{0}, current_gg{0};
              if (processingphiview) {
                current_dbphi =
                    m_idHelperSvc->rpcIdHelper().doubletPhi(channelId);
                current_dbz = m_idHelperSvc->rpcIdHelper().doubletZ(channelId);
                current_gg = m_idHelperSvc->rpcIdHelper().gasGap(channelId);
                ATH_MSG_VERBOSE(
                    "Check also for eta hits matching dbz, dbphi, gg  "
                    << current_dbz << " " << current_dbphi << " "
                    << current_gg);
              }
 
              for (RpcPrepData* rpc : *collection) {
                if (channelId == rpc->identify() &&
                    fabs(time - rpc->time()) < m_overlap_timeTolerance) {
                  duplicate = true;
                  hasAMatchingEtaHit = false;  // we don't want to increment the
                                               // number of strips with
                  // a matching eta due to a cabling overlap
                  ATH_MSG_VERBOSE("Duplicated RpcPrepData(not recorded) = "
                                  << m_idHelperSvc->toString(channelId));
                  float previous_time = rpc->time();
                  // choose the smallest time within timeTolerance
                  if (time < previous_time) {
                    rpc->m_time = time;
                    ATH_MSG_DEBUG(
                        "time of the prd previously stored is now updated with "
                        "current hit time: "
                        << previous_time << " -> " << rpc->time());
                  }
                  break;  // this break is why we cannot have
                          //        solvePhiAmb_thisHit = true and
                          //        reduceCablOvl_thisHit= false
                }
                if (processingphiview) {
                  if (solvePhiAmb_thisHit) {
                    if (!unsolvedAmbiguity) {
                      if (m_idHelperSvc->rpcIdHelper().measuresPhi(
                              rpc->identify()) == 0) {
                        // check if there's a eta hit in the same gap
                        // of the RPC module (doubletZ, doubletPhi, gg)
                        if (current_dbz ==
                            m_idHelperSvc->rpcIdHelper().doubletZ(
                                rpc->identify())) {
                          if (current_dbphi ==
                              m_idHelperSvc->rpcIdHelper().doubletPhi(
                                  rpc->identify())) {
                            if (current_gg ==
                                m_idHelperSvc->rpcIdHelper().gasGap(
                                    rpc->identify())) {
                              if (fabs(time - rpc->time()) <
                                  m_etaphi_coincidenceTime) {
                                hasAMatchingEtaHit = true;
                                ATH_MSG_VERBOSE(
                                    "There's a matching eta hit with id "
                                    << m_idHelperSvc->toString(
                                           rpc->identify()));
                                // here there can be a break ? NO, we need to
                                // keep looping in order to check
                                //  if this preprawdata has been already
                                //  recorded (due to cabling overlaps)
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
              if (hasAMatchingEtaHit)
                nMatchingEtaHits++;  // Number of phi strips (possibly
                                     // corresponding to this CM hit)
              // with a matching eta
              if (processingphiview && duplicate)
                nDuplicatePhiHits++;  // Number of phi strips (possibly
                                      // corresponding to this CM hit)
                                      // already in the collection
            }                         // if collection is not empty
          }                           // end of if reduceCablingOverlap
 
          if (msgLvl(MSG::VERBOSE)) {
            if (solvePhiAmb_thisHit && (!etaview))
              ATH_MSG_VERBOSE("nMatchingEtaHits = " << nMatchingEtaHits
                                                    << " hasAMatchingEtaHit = "
                                                    << hasAMatchingEtaHit);
          }
 
          if (!duplicate) {
            ATH_MSG_VERBOSE(
                " solvePhiAmb_thisHit, processingetaview, processingphiview, "
                "hasAMatchingEtaHit, unsolvedAmbiguity "
                << solvePhiAmb_thisHit << " " << processingetaview << " "
                << processingphiview << " " << hasAMatchingEtaHit << " "
                << unsolvedAmbiguity);
            if ((!solvePhiAmb_thisHit) || processingetaview ||
                (processingphiview &&
                 (hasAMatchingEtaHit || unsolvedAmbiguity))) {
              if (unsolvedAmbiguity) {
                if (idVect.empty()) {  // full-scan mode
                  ATH_MSG_DEBUG("storing data even if unsolvedAmbiguity");
                } else {
                  // if in RoI mode and the collection was not requested in this
                  // event, add it to ambiguousCollections
                  ATH_MSG_DEBUG(
                      "unsolvedAmbiguity is true, adding collection with hash "
                      "= "
                      << (int)rpcHashId << " to ambiguous collections vector");
                  if (!state.m_decodedOfflineHashIds.empty() &&
                      state.m_decodedOfflineHashIds.find(rpcHashId) ==
                          state.m_decodedOfflineHashIds.end()) {
                    ambiguousCollections.insert(rpcHashId);
                    ATH_MSG_DEBUG(
                        "collection not yet processed; added to ambiguous "
                        "collection vector; going to the next offline "
                        "channel ID");
                    continue;  // go to the next possible offline channel ID
                  } else if (!doingSecondLoopAmbigColls) {
                    ambiguousCollections.insert(rpcHashId);
                    ATH_MSG_DEBUG(
                        "collection already processed and "
                        "doingSecondLoopAmbigColls=false; added to ambiguous "
                        "collection vector; going to the next offline channel "
                        "ID");
                    continue;
                  } else {
                    ATH_MSG_DEBUG(
                        "collection already processed and "
                        "doingSecondLoopAmbigColls=true; trying to store data "
                        "even if "
                        "unsolvedAmbiguity");
                  }
                }
              }
              SG::ReadCondHandle<MuonGM::MuonDetectorManager> muDetMgr{m_muDetMgrKey, ctx};
              const RpcReadoutElement* descriptor = muDetMgr->getRpcReadoutElement(channelId);
 
              // here check validity
              // if invalid, reset flags
              if (!descriptor) {
                hasAMatchingEtaHit = false;
                duplicate = false;
                ATH_MSG_WARNING(
                    "Detector Element not found for Identifier from the "
                    "cabling service <"
                    << m_idHelperSvc->toString(channelId)
                    << ">  =>>ignore this hit");
                continue;
              } else if (!descriptor->containsId(channelId)) {
                hasAMatchingEtaHit = false;
                duplicate = false;
                if (m_idHelperSvc->rpcIdHelper().stationNameString(
                        m_idHelperSvc->rpcIdHelper().stationName(channelId)) ==
                    "BOG")
                  ATH_MSG_DEBUG(
                      "Identifier from the cabling service <"
                      << m_idHelperSvc->toString(channelId)
                      << "> inconsistent with the geometry of detector element "
                         "<"
                      << m_idHelperSvc->toString(descriptor->identify())
                      << ">  =>>ignore this hit /// there are unmasked "
                         "channels in BOG");
                else
                  ATH_MSG_WARNING(
                      "Identifier from the cabling service <"
                      << m_idHelperSvc->toString(channelId)
                      << "> inconsistent with the geometry of detector element "
                         "<"
                      << m_idHelperSvc->toString(descriptor->identify())
                      << ">  =>>ignore this hit");
                continue;
              }
 
              //
              // Global position
              Amg::Vector3D tempGlobalPosition =
                  descriptor->stripPos(channelId);
              ATH_MSG_VERBOSE("RPC RDO->PrepRawdata: global position ("
                              << tempGlobalPosition.x() << ", "
                              << tempGlobalPosition.y() << ", "
                              << tempGlobalPosition.z() << ") ");
              // Local position
              Amg::Vector2D pointLocPos{Amg::Vector2D::Zero()};
              descriptor->surface(channelId).globalToLocal(
                  tempGlobalPosition, tempGlobalPosition, pointLocPos);
 
              // List of Digits in the cluster (self)
              std::vector<Identifier> identifierList{channelId};
 
              // width of the cluster (self)
              float stripWidth = descriptor->StripWidth(
                  m_idHelperSvc->rpcIdHelper().measuresPhi(channelId));
 
              // Error matrix
              double errPos = stripWidth / std::sqrt(12.0);
              Amg::MatrixX mat(1, 1);
              mat.setIdentity();
              mat *= errPos * errPos;
              // check if this is a triggerINFO rather then a real hit
              // Create a new PrepData
              int ambiguityFlag = 0;
              if (solvePhiAmb_thisHit) {
                if (processingetaview)
                  ambiguityFlag = 1;
                if (unsolvedAmbiguity)
                  ambiguityFlag = digitVec.size();
                else if (hasAMatchingEtaHit)
                  ambiguityFlag = nMatchingEtaHits;
              }
 
              // correct prd time from cool db
              if (m_RPCInfoFromDb) {
                SG::ReadCondHandle<RpcCondDbData> readHandle{m_readKey, ctx};
                std::optional<double> StripTimeFromCool = readHandle->getStripTime(channelId);
                if (StripTimeFromCool) {
                  time -= (*StripTimeFromCool);
                }                
              }
 
              if (triggerHit) {
                ATH_MSG_DEBUG("producing a new  RpcCoinData");
 
                RpcCoinData* newCoinData = new RpcCoinData(
                    channelId, rpcHashId, pointLocPos, identifierList,
                    Amg::MatrixX(mat), descriptor, (float)time, ambiguityFlag,
                    rpcChan->ijk(), threshold, overlap, cmaId, padId, sectorId,
                    !(highPtCm));
 
                // record the new data in the collection
                ATH_MSG_DEBUG(
                    " Adding RpcCoinData @ "
                    << newCoinData << " to collection "
                    << m_idHelperSvc->toString(collectionTrg->identify()));
 
                newCoinData->setHashAndIndex(collectionTrg->identifyHash(),
                                             collectionTrg->size());
                collectionTrg->push_back(newCoinData);
              }  // end of to be stored now for RpcCoinData
              else {
                ATH_MSG_DEBUG("producing a new  RpcPrepData with "
                              << "ambiguityFlag = " << ambiguityFlag);
 
                RpcPrepData* newPrepData = new RpcPrepData(
                    channelId, rpcHashId, pointLocPos, identifierList,
                    Amg::MatrixX(mat), descriptor, (float)time, ambiguityFlag);
 
                // record the new data in the collection
                ATH_MSG_DEBUG(
                    " Adding digit @ "
                    << newPrepData << " to collection "
                    << m_idHelperSvc->toString(collection->identify()));
 
                newPrepData->setHashAndIndex(collection->identifyHash(),
                                             collection->size());
                collection->push_back(newPrepData);
                // here one should reset ambiguityFlag for the prepdata
                // registered before the current one (from the same RDO hit) if
                // nMatchingEtaHits > 1
                nPrepRawData++;
              }
              if (!m_xAODKey.empty()) {
                auto xprd = state.m_xaodHandle->push_back(std::make_unique<xAOD::RpcStrip>());
                xprd->setIdentifier(channelId.get_compact());
                xAOD::MeasVector<1> locpos{pointLocPos[0]};
                xAOD::MeasMatrix<1> cov{xAOD::MeasMatrix<1>::Identity()};
                (cov)(0, 0) = mat(0, 0);
                xprd->setMeasurement(m_idHelperSvc->detElementHash(channelId), locpos, cov);
                xprd->setStripNumber(idHelper.strip(channelId));
                xprd->setGasGap(idHelper.gasGap(channelId));
                xprd->setMeasuresPhi(idHelper.measuresPhi(channelId));
                xprd->setDoubletPhi(idHelper.doubletPhi(channelId));
                xprd->setTime(static_cast<float>(time));
                xprd->setTriggerInfo(rpcChan->ijk());
                xprd->setAmbiguityFlag(ambiguityFlag);
                xprd->setTimeOverThreshold(threshold);
              }  // end of to be stored now for RpcPrepData
            }    // end of to be stored now
          }      // this hit was not yet recorded
          else {
            // this hit was already recorded
            ATH_MSG_DEBUG("digit already in the collection ");
          }
        }  // end loop over possible offline identifiers corresponding to this
           // CM hit
        ATH_MSG_VERBOSE(
            "processingphiview, nMatchingEtaHits, nDuplicatePhiHits, "
            "unsolvedAmbiguity, solvePhiAmb_thisHit : "
            << processingphiview << ", " << nMatchingEtaHits << ", "
            << nDuplicatePhiHits << ", " << unsolvedAmbiguity << ", "
            << solvePhiAmb_thisHit);
        if ((processingphiview && (nMatchingEtaHits == 0)) &&
            (nDuplicatePhiHits == 0) && (!unsolvedAmbiguity) &&
            (solvePhiAmb_thisHit)) {
          unsolvedAmbiguity = true;
          // no eta hits matching any phi digit
          // loop once again and store all phi digits potentially generating
          // this CM hit
          ATH_MSG_DEBUG(
              "No eta prepData matching any phi hit from this CM hit \n"
              << "loop once again and store all phi digits potentially "
                 "generating this CM hit");
        } else if (unsolvedAmbiguity)
          notFinished = false;
        else
          notFinished = false;
      }  // end of not finished
    }    // end loop over CM hits
  }      // end loop over CMs
 
  ATH_MSG_DEBUG("***************** Stop  of processPad eta/phiview "
                << processingetaview << "/" << processingphiview
                << "***************** for Pad online Id " << padId
                << " m_logic sector ID " << sectorId);
 
  return StatusCode::SUCCESS;
}
 
StatusCode Muon::RpcRdoToPrepDataToolMT::processNrpcRdo(const EventContext& ctx,
                                                        State& state) const {
  if (m_rdoNrpcContainerKey.empty()) {
    ATH_MSG_DEBUG("The NRPC processing is disabled.");
    return StatusCode::SUCCESS;
  }
 
  ATH_MSG_DEBUG("Retrieving Nrpc RDO container from the store");
  SG::ReadHandle<xAOD::NRPCRDOContainer> rdoNrpcContainerHandle{
      m_rdoNrpcContainerKey, ctx};
  if (!rdoNrpcContainerHandle.isPresent()) {
    ATH_MSG_ERROR("Retrieval of NRPC RDO " << m_rdoNrpcContainerKey.fullKey()
                                           << " container failed !");
    return StatusCode::FAILURE;
  }
 
  if (rdoNrpcContainerHandle->empty()) {
    // empty NRPC RDO container - no nrpc rdo in this event
    ATH_MSG_DEBUG("Empty NRPC RDO container - no nrpc rdo in this event ");
    return StatusCode::SUCCESS;
  }
  ATH_MSG_DEBUG("Not empty NRPC RDO container in this event ");
 
  SG::ReadCondHandle<MuonNRPC_CablingMap> readCdo{m_nRpcCablingKey, ctx};
  if (!readCdo.isValid()) {
    ATH_MSG_ERROR("Could not retrieve " << m_nRpcCablingKey.fullKey()
                                        << " from the conditions store");
    return StatusCode::FAILURE;
  }
  SG::ReadCondHandle<MuonGM::MuonDetectorManager> muDetMgr{m_muDetMgrKey, ctx};
 
  for (const xAOD::NRPCRDO* nrpcrdo : *rdoNrpcContainerHandle) {
    NrpcCablingData cabling_data{};
    cabling_data.subDetector = nrpcrdo->subdetector();
    cabling_data.tdcSector = nrpcrdo->tdcsector();
    cabling_data.tdc = nrpcrdo->tdc();
    cabling_data.channelId = nrpcrdo->channel();
    Identifier chanId{};
    if (!readCdo->getOfflineId(cabling_data, msgStream()) ||
        !readCdo->convert(cabling_data, chanId, false)) {
      ATH_MSG_FATAL("Failed to retrieve the offline Identifier");
      return StatusCode::FAILURE;
    }
    const IdentifierHash rpcHashId = m_idHelperSvc->moduleHash(chanId);
    RpcPrepDataCollection* collection =
        state.getPrepCollection(rpcHashId, msgStream());
 
    const RpcReadoutElement* descriptor =
        muDetMgr->getRpcReadoutElement(chanId);
 
    // List of Digits in the cluster (self)
    std::vector<Identifier> identifierList{chanId};
    // Global position
    const Amg::Vector3D stripPos{descriptor->stripPos(chanId)};
    ATH_MSG_DEBUG("RPC RDO->PrepRawdata " << m_idHelperSvc->toString(chanId)
                                          << " global position "
                                          << Amg::toString(stripPos, 2));
    // Local position
    Amg::Vector2D pointLocPos{Amg::Vector2D::Zero()};
    descriptor->surface(chanId).globalToLocal(stripPos, stripPos, pointLocPos);
    // width of the cluster (self)
 
    const double stripWidth = descriptor->StripWidth(
        m_idHelperSvc->rpcIdHelper().measuresPhi(chanId));
    // Error matrix
    const double errPos = stripWidth / std::sqrt(12.0);
    Amg::MatrixX mat(1, 1);
    mat.setIdentity();
    mat *= errPos * errPos;
 
    int ambiguityFlag = 0;  // Ambiguity flag not checked for BIS RPCs
 
    const float time = nrpcrdo->time();
    const float timeoverthr = nrpcrdo->timeoverthr();
 
    RpcPrepData* newPrepData =
        new RpcPrepData(chanId, rpcHashId, pointLocPos, identifierList, mat,
                        descriptor, time, timeoverthr, 0, ambiguityFlag);
 
    newPrepData->setHashAndIndex(collection->identifyHash(),
                                 collection->size());
    collection->push_back(newPrepData);
  }
  return StatusCode::SUCCESS;
}
 
void Muon::RpcRdoToPrepDataToolMT::processTriggerHitHypothesis(
    RpcCoinMatrix::const_iterator itD, RpcCoinMatrix::const_iterator itD_end,
    bool highPtCm,
    // the previous arg.s are inputs
    bool& triggerHit, unsigned short& threshold, unsigned short& overlap,
    bool& toSkip) const {
  toSkip = false;
  const RpcFiredChannel* rpcChan = (*itD);
  if ((highPtCm && rpcChan->ijk() < 2) || (rpcChan->ijk() > 5)) {
    ATH_MSG_VERBOSE("RpcFiredChannel: it's a trigger hit");
    triggerHit = true;
 
    // triggerHit
    if (!m_producePRDfromTriggerWords) {
      // skip if not storing the trigger info
      toSkip = true;
      return;
    }
    if (rpcChan->ijk() == 7) {
      // the info in ijk 7 refer to the previous CM hit with ijk  6 => skip
      toSkip = true;
      return;
    }
    if (rpcChan->ijk() == 6) {
      std::string cmtype;
      // look for the subsequent ijk  7 to define threshold and overlap
      if (msgLvl(MSG::VERBOSE)) {
        cmtype = " in low  pT CM ";
        if (highPtCm)
          cmtype = " in high pT CM ";
        ATH_MSG_VERBOSE("This hit: ijk = " << rpcChan->ijk() << cmtype
                                           << " bcid is " << rpcChan->bcid()
                                           << " time is " << rpcChan->time()
                                           << " ch " << rpcChan->channel());
      }
      RpcCoinMatrix::const_iterator itDnext = itD + 1;
      while (itDnext != itD_end) {
        const RpcFiredChannel* rpcChanNext = (*itDnext);
        if (msgLvl(MSG::VERBOSE)) {
          ATH_MSG_VERBOSE("Next hit: ijk = " << rpcChanNext->ijk() << cmtype
                                             << " bcid is " << rpcChan->bcid()
                                             << " time is "
                                             << rpcChanNext->time());
          if (rpcChanNext->ijk() < 7)
            ATH_MSG_VERBOSE(" ch " << rpcChanNext->channel());
        }
        if (rpcChanNext->ijk() == 7) {
          ATH_MSG_VERBOSE("next has ijk=7 ");
          if (rpcChanNext->bcid() == rpcChan->bcid() &&
              rpcChanNext->time() == rpcChan->time()) {
            ATH_MSG_VERBOSE("bdid/tick match; assigning thr/overlap  = "
                            << rpcChanNext->thr() << "/" << rpcChanNext->ovl());
            threshold = rpcChanNext->thr();
            overlap = rpcChanNext->ovl();
          } else {
            ATH_MSG_WARNING(
                "ijk =7 after a ijk = 6 BUT bdid/tick don't match - will not "
                "assign threshold/overlap ");
          }
          break;
        } else {
          // std::cout<<"processing trigger hit with ijk = 6; next is not ijk
          // 7"<<std::endl;
          if (rpcChanNext->ijk() == 6) {
            ++itDnext;
            // std::cout<<"next has ijk 6; try next to next"<<std::endl;
          } else {
            ATH_MSG_WARNING(
                "RPC cm hit with ijk = 6 not followed by ijk = 6 or 7 - will "
                "not assign threshold / overlap");
            break;
          }
        }
      }
    }
  } else {
    triggerHit = false;
    return;
  }
  ATH_MSG_VERBOSE("RPC trigger hit; ijk = "
                  << rpcChan->ijk() << " threshold / overlap = " << threshold
                  << "/" << overlap);
}