CGH0S7 fae4093863 Add thread-safe ShellPatch::setupintintstuff with OpenMP ...

Split prolongpointstru into search-only (prolongpointstru_search) and
append-only (prolongpointstru_append) functions. The search is read-only
and thread-safe; each thread builds private linked lists via
prolongpointstru_append, merged after the parallel loop.

This eliminates critical-section contention and delivers ~2.2x speedup:
setupintintstuff: 511s -> 252s, total init: 592s -> 267s.

Also add -qopenmp to ShellPatch.o compilation via makefile override rule
and <omp.h> include with _OPENMP guards + fallback stubs.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-10 20:05:46 +08:00

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