THotPDF.GetDocumentStringInternStatistics

Returns storage and reuse diagnostics for the string pool associated with the current PDF load

Declaration

function GetDocumentStringInternStatistics(
  out Statistics: THPDFDocumentStringInternStatistics): boolean;

Return value

Returns True while the document string pool is available, including before the first load when all traffic counters are zero

Admission limits

MaxStringLength is 64 bytes
MaxEntryCount is 65,536 distinct values
MaxRetainedBytes is 4 MiB of string content

Empty values, longer values, and new values that would exceed either capacity limit bypass the pool and retain their original bytes

Statistics

EntryCount and RetainedBytes describe the values admitted during the current load
RequestCount equals HitCount plus MissCount plus BypassCount
ReusedBytes counts bytes returned from existing entries
NameRequestCount, OperatorRequestCount, and ShortStringRequestCount separate the three input categories
ResetCount is one after a load session starts and zero before the first load

Lifetime and matching

The pool is cleared at the start of each load, matches values by exact case-sensitive bytes, and never shares entries between THotPDF instances

Pooled AnsiString values use normal reference counting and copy-on-write behavior, so later assignment or mutation does not alter another PDF object