Add track hash to TrackStudy output

Author: shahor02

Detectors/GlobalTrackingWorkflow/study/include/GlobalTrackingStudy/TrackInfoExt.h

@@ -53,7 +53,7 @@ struct TrackInfoExt {
   uint8_t padFromEdge = -1;
   uint8_t rowMaxTPC = 0;
   uint8_t rowCountTPC = 0;
-
+  size_t hashIU = 0;
   void setTPCA() { setBit(int(TPCA)); }
   void setTPCC() { setBit(int(TPCC)); }
   void setTPCAC() { setBit(int(TPCC)); }
@@ -74,7 +74,7 @@ struct TrackInfoExt {
   void resetBit(int bit) { flags &= ~(kBitMask & (0x1 << bit)); }
   bool isBitSet(int bit) const { return flags & (kBitMask & (0x1 << bit)); }
 
-  ClassDefNV(TrackInfoExt, 7);
+  ClassDefNV(TrackInfoExt, 8);
 };
 
 } // namespace dataformats

Detectors/GlobalTrackingWorkflow/study/src/TrackingStudy.cxx

@@ -479,6 +479,7 @@ void TrackingStudySpec::process(o2::globaltracking::RecoContainer& recoData)
           auto& trcExt = trcExtVec.emplace_back();
           recoData.getTrackTime(vid, trcExt.ttime, trcExt.ttimeE);
           trcExt.track = trc;
+          trcExt.hashIU = trc.hash();
           trcExt.dca = dca;
           trcExt.gid = vid;
           trcExt.xmin = xmin;