Implement Vit's comments

Author: Marcellocosti

PWGHF/Core/CentralityEstimation.h

@@ -120,42 +120,36 @@ float getCentralityColl(const Coll&)
 template <typename Coll>
 float getCentralityColl(const Coll& collision, int centEstimator)
 {
-  float cent = -999.;
   switch (centEstimator) {
     case CentralityEstimator::FT0A:
       if constexpr (hasFT0ACent<Coll>) {
-        cent = collision.centFT0A();
-      } else {
-        LOG(warning) << "Warning: Collision does not have centFT0A().\n";
+        return collision.centFT0A();
       }
+      LOG(fatal) << "Collision does not have centFT0A().";
       break;
     case CentralityEstimator::FT0C:
       if constexpr (hasFT0CCent<Coll>) {
-        cent = collision.centFT0C();
-      } else {
-        LOG(warning) << "Warning: Collision does not have centFT0C().\n";
+        return collision.centFT0C();
       }
+      LOG(fatal) << "Collision does not have centFT0C().";
       break;
     case CentralityEstimator::FT0M:
       if constexpr (hasFT0MCent<Coll>) {
-        cent = collision.centFT0M();
-      } else {
-        LOG(warning) << "Warning: Collision does not have centFT0M().\n";
+        return collision.centFT0M();
       }
+      LOG(fatal) << "Collision does not have centFT0M().";
       break;
     case CentralityEstimator::FV0A:
       if constexpr (hasFV0ACent<Coll>) {
-        cent = collision.centFV0A();
-      } else {
-        LOG(warning) << "Warning: Collision does not have centFV0A().\n";
+        return collision.centFV0A();
       }
+      LOG(fatal) << "Collision does not have centFV0A().";
       break;
     default:
-      LOG(warning) << "Centrality estimator not valid. Possible values are V0A, T0M, T0A, T0C. Setting value to -999.";
-      cent = -999.;
+      LOG(fatal) << "Centrality estimator not valid. Possible values are V0A, T0M, T0A, T0C.";
       break;
   }
-  return cent;
+  return -999.f;
 }
 
 /// \brief Function to get MC collision centrality

PWGHF/D2H/Tasks/taskFlowCharmHadrons.cxx

@@ -607,7 +607,7 @@ struct HfTaskFlowCharmHadrons {
                          aod::BCsWithTimestamps const& bcs)
   {
     float centrality{-1.f};
-    if (!isCollSelected<o2::hf_centrality::CentralityEstimator::None>(collision, bcs, centrality)) {
+    if (!isCollSelected<o2::hf_centrality::CentralityEstimator::FT0C>(collision, bcs, centrality)) {
       // no selection on the centrality is applied on purpose to allow for the resolution study in post-processing
       return;
     }

PWGHF/TableProducer/candidateCreator2Prong.cxx

@@ -628,7 +628,7 @@ struct HfCandidateCreator2Prong {
 
       /// bitmask with event. selection info
       float centrality{-1.f};
-      float occupancy = getOccupancyColl(collision);
+      float occupancy = getOccupancyColl(collision, OccupancyEstimator::Its);
       const auto rejectionMask = hfEvSel.getHfCollisionRejectionMask<true, CentralityEstimator::None, aod::BCsWithTimestamps>(collision, centrality, ccdb, registry);
 
       /// monitor the satisfied event selections
@@ -646,7 +646,7 @@ struct HfCandidateCreator2Prong {
 
       /// bitmask with event. selection info
       float centrality{-1.f};
-      float occupancy = getOccupancyColl(collision);
+      float occupancy = getOccupancyColl(collision, OccupancyEstimator::Its);
       const auto rejectionMask = hfEvSel.getHfCollisionRejectionMask<true, CentralityEstimator::FT0C, aod::BCsWithTimestamps>(collision, centrality, ccdb, registry);
 
       /// monitor the satisfied event selections
@@ -664,7 +664,7 @@ struct HfCandidateCreator2Prong {
 
       /// bitmask with event. selection info
       float centrality{-1.f};
-      float occupancy = getOccupancyColl(collision);
+      float occupancy = getOccupancyColl(collision, OccupancyEstimator::Its);
       const auto rejectionMask = hfEvSel.getHfCollisionRejectionMask<true, CentralityEstimator::FT0M, aod::BCsWithTimestamps>(collision, centrality, ccdb, registry);
 
       /// monitor the satisfied event selections

PWGHF/TableProducer/candidateCreator3Prong.cxx

@@ -406,7 +406,7 @@ struct HfCandidateCreator3Prong {
 
       /// bitmask with event. selection info
       float centrality{-1.f};
-      float occupancy = getOccupancyColl(collision);
+      float occupancy = getOccupancyColl(collision, OccupancyEstimator::Its);
       const auto rejectionMask = hfEvSel.getHfCollisionRejectionMask<true, CentralityEstimator::None, aod::BCsWithTimestamps>(collision, centrality, ccdb, registry);
 
       /// monitor the satisfied event selections
@@ -424,7 +424,7 @@ struct HfCandidateCreator3Prong {
 
       /// bitmask with event. selection info
       float centrality{-1.f};
-      float occupancy = getOccupancyColl(collision);
+      float occupancy = getOccupancyColl(collision, OccupancyEstimator::Its);
       const auto rejectionMask = hfEvSel.getHfCollisionRejectionMask<true, CentralityEstimator::FT0C, aod::BCsWithTimestamps>(collision, centrality, ccdb, registry);
 
       /// monitor the satisfied event selections
@@ -442,7 +442,7 @@ struct HfCandidateCreator3Prong {
 
       /// bitmask with event. selection info
       float centrality{-1.f};
-      float occupancy = getOccupancyColl(collision);
+      float occupancy = getOccupancyColl(collision, OccupancyEstimator::Its);
       const auto rejectionMask = hfEvSel.getHfCollisionRejectionMask<true, CentralityEstimator::FT0M, aod::BCsWithTimestamps>(collision, centrality, ccdb, registry);
 
       /// monitor the satisfied event selections

PWGHF/Utils/utilsAnalysis.h

@@ -31,7 +31,7 @@ enum BHadMothers { NotMatched = 0,
 /// Convert the B hadron mother PDG for non prompt candidates to a flag
 /// \param pdg of the b hadron mother
 /// \return integer map to specific mothers' PDG codes
-int getBHadMotherFlag(const int& flagBHad)
+BHadMothers getBHadMotherFlag(const int flagBHad)
 {
   if (std::abs(flagBHad) == o2::constants::physics::kBPlus) {
     return BHadMothers::BPlus;

PWGHF/Utils/utilsEvSelHf.h

@@ -42,29 +42,25 @@ enum OccupancyEstimator { None = 0,
 /// \param collision is the collision with the occupancy information
 /// \return collision occupancy
 template <typename Coll>
-float getOccupancyColl(Coll const& collision, int occEstimator = OccupancyEstimator::Its)
+float getOccupancyColl(Coll const& collision, int occEstimator)
 {
-  float occupancy = -999.;
   switch (occEstimator) {
     case OccupancyEstimator::Its:
-      occupancy = collision.trackOccupancyInTimeRange();
-      break;
+      return collision.trackOccupancyInTimeRange();
     case OccupancyEstimator::Ft0c:
-      occupancy = collision.ft0cOccupancyInTimeRange();
-      break;
+      return collision.ft0cOccupancyInTimeRange();
     default:
-      LOG(warning) << "Occupancy estimator not valid. Possible values are ITS or FT0C. Fallback to ITS";
-      occupancy = collision.trackOccupancyInTimeRange();
+      LOG(fatal) << "Occupancy estimator not valid. Possible values are ITS or FT0C.";
       break;
   }
-  return occupancy;
+  return -999.f;
 };
 
 /// \brief Function to get MC collision occupancy
 /// \param collSlice collection of reconstructed collisions associated to a generated one
 /// \return generated MC collision occupancy
 template <typename CCs>
-int getOccupancyGenColl(CCs const& collSlice, int occEstimator = OccupancyEstimator::Its)
+int getOccupancyGenColl(CCs const& collSlice, int occEstimator)
 {
   float multiplicity{0.f};
   int occupancy = 0;