Skip to content

Add and use hash method for TrackParam #14551

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
shahor02 merged 2 commits into from
Jul 31, 2025
Merged

Add and use hash method for TrackParam #14551

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
4813560
Add hash method to the TrackParam
shahor02 Jul 30, 2025
6c0041f
Add track hash to TrackStudy output
shahor02 Jul 30, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
17 changes: 17 additions & 0 deletions DataFormats/Reconstruction/include/ReconstructionDataFormats/TrackParametrization.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -248,6 +248,8 @@ class TrackParametrization
#ifndef GPUCA_ALIGPUCODE
std::string asString() const;
std::string asStringHexadecimal();
size_t hash() const { return hash(getX(), getAlpha(), getY(), getZ(), getSnp(), getTgl(), getQ2Pt()); }
static size_t hash(float x, float alp, float y, float z, float snp, float tgl, float q2pt);
#endif

GPUd() void updateParam(value_t delta, int i);
Expand Down Expand Up @@ -752,6 +754,21 @@ GPUdi() void TrackParametrization<value_T>::updateParams(const value_t* delta)
}
}

#ifndef GPUCA_ALIGPUCODE
template <typename value_T>
size_t TrackParametrization<value_T>::hash(float x, float alp, float y, float z, float snp, float tgl, float q2pt)
{
size_t h = std::hash<float>{}(o2::math_utils::detail::truncateFloatFraction(x, 0xFFFFFFF0));
h ^= std::hash<float>{}(o2::math_utils::detail::truncateFloatFraction(alp, 0xFFFFFFF0)) << 1;
h ^= std::hash<float>{}(o2::math_utils::detail::truncateFloatFraction(y, 0xFFFFFFF0)) << 1;
h ^= std::hash<float>{}(o2::math_utils::detail::truncateFloatFraction(z, 0xFFFFFFF0)) << 1;
h ^= std::hash<float>{}(o2::math_utils::detail::truncateFloatFraction(snp, 0xFFFFFF00)) << 1;
h ^= std::hash<float>{}(o2::math_utils::detail::truncateFloatFraction(tgl, 0xFFFFFF00)) << 1;
h ^= std::hash<float>{}(o2::math_utils::detail::truncateFloatFraction(q2pt, 0xFFFFFC00)) << 1;
return h;
}
#endif

} // namespace track
} // namespace o2

Expand Down
4 changes: 2 additions & 2 deletions Detectors/GlobalTrackingWorkflow/study/include/GlobalTrackingStudy/TrackInfoExt.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -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)); }
Expand All @@ -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
Expand Down
1 change: 1 addition & 0 deletions Detectors/GlobalTrackingWorkflow/study/src/TrackingStudy.cxx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down