regint.h: Reduce the frequency of rb_thread_check_ints

edc8576a65b7082597d45a694434261ec3ac0d9e checks interrupt at every
backtrack, which brought significant overhead.

This change makes the check only once every 128 backtracks.

1 files changed, 2 insertions, 0 deletions

diff --git a/regexec.c b/regexec.c
index f6435d84c6..9535e45228 100644
--- a/regexec.c
+++ b/regexec.c
@@ -421,6 +421,7 @@ onig_region_copy(OnigRegion* to, const OnigRegion* from)
   (msa).start    = (arg_start);\
   (msa).gpos     = (arg_gpos);\
   (msa).best_len = ONIG_MISMATCH;\
+  (msa).counter  = 0;\
 } while(0)
 #else
 # define MATCH_ARG_INIT(msa, arg_option, arg_region, arg_start, arg_gpos) do {\
@@ -429,6 +430,7 @@ onig_region_copy(OnigRegion* to, const OnigRegion* from)
   (msa).region   = (arg_region);\
   (msa).start    = (arg_start);\
   (msa).gpos     = (arg_gpos);\
+  (msa).counter  = 0;\
 } while(0)
 #endif