THPDFPageReverseIndexStatistics

Captures one snapshot of page reverse-index storage, validity and activity

Declaration

THPDFPageReverseIndexStatistics = record
  PageCount: Integer;
  Capacity: Integer;
  ObjectEntryCount: Integer;
  PointerEntryCount: Integer;
  BuildCount: Int64;
  InvalidationCount: Int64;
  LookupCount: Int64;
  HitCount: Int64;
  ProbeCount: Int64;
  Valid: boolean;
end;

Capacity is the slot count of each open-addressed map
ObjectEntryCount and PointerEntryCount report unique retained keys
BuildCount increases after each lazy rebuild
InvalidationCount increases when a valid index becomes stale after mutation
LookupCount, HitCount and ProbeCount are lifetime counters for the document instance
Valid reports whether the retained maps match the current page table length and mutation generation