Yukihiro "Matz" Matsumoto 726d8febf3 mruby-regexp: cache Pike VM state in pattern to avoid per-exec malloc ...

Pre-allocate visited array and thread lists at compile time and
reuse them across re_exec calls. A cache_in_use flag detects
re-entrancy and falls back to malloc when needed.

Eliminates 3 malloc + 3 free per NFA execution for the common
non-re-entrant case. Combined with the literal fast path, brings
literal match? from 4.7x to 2.5x vs CRuby.

Co-authored-by: Claude <noreply@anthropic.com>

2026-04-23 19:25:34 +09:00

..

re_internal.h

mruby-regexp: cache Pike VM state in pattern to avoid per-exec malloc

2026-04-23 19:25:34 +09:00