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1e2aae8095
The idea is to avoid std::map lookup for each CellRef. Instead generate a sequence of added and removed RefNums into a vector then order them by RefNum using a stable sort that preserves relative order of elements with the same RefNum. RefIDs are stored in a different vector to avoid std::string move ctor calls when swapping elements while sorting. Reversed iteration over added and removed RefNums for each unique RefNum is an equivalent to what map-based algorithm produces. The main benefit from sorting a vector is a data locality that means less cache misses for each access. Reduces ESMStore::countRecords perf cycles by 25%. |
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| .. | ||
| algorithm.hpp | ||
| barrier.hpp | ||
| budgetmeasurement.hpp | ||
| constants.hpp | ||
| convert.hpp | ||
| coordinateconverter.hpp | ||
| endianness.hpp | ||
| frameratelimiter.hpp | ||
| guarded.hpp | ||
| hash.hpp | ||
| helpviewer.cpp | ||
| helpviewer.hpp | ||
| mathutil.hpp | ||
| messageformatparser.cpp | ||
| messageformatparser.hpp | ||
| objectpool.hpp | ||
| resourcehelpers.cpp | ||
| resourcehelpers.hpp | ||
| rng.cpp | ||
| rng.hpp | ||
| stringops.hpp | ||
| thread.cpp | ||
| thread.hpp | ||
| timer.hpp | ||
| utf8stream.hpp | ||
| weakcache.hpp | ||