From 2a3324fcd2f9681e167b2619563a5c26e1a362fe Mon Sep 17 00:00:00 2001 From: Koichi Sasada Date: Thu, 17 Dec 2020 01:56:30 +0900 Subject: No sync on ASCII/US_ASCCII/UTF-8 rb_enc_from_index(index) doesn't need locking if index specify ASCII/US_ASCCII/UTF-8. rb_enc_from_index() is called frequently so it has impact. user system total real r_parallel/miniruby 174 0.000209 0.000000 5.559872 ( 1.811501) r_parallel/master_mini 175 0.000238 0.000000 12.664707 ( 3.523641) (repeat x1000 `s.split(/,/)` where s = '0,,' * 1000) --- encoding.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'encoding.c') diff --git a/encoding.c b/encoding.c index 64748ceb27..330be29f4b 100644 --- a/encoding.c +++ b/encoding.c @@ -418,9 +418,16 @@ rb_encoding * rb_enc_from_index(int index) { rb_encoding *enc; - GLOBAL_ENC_TABLE_EVAL(enc_table, - enc = enc_from_index(enc_table, index)); - return enc; + + switch (index) { + case ENCINDEX_ASCII: return global_enc_ascii; + case ENCINDEX_UTF_8: return global_enc_utf_8; + case ENCINDEX_US_ASCII: return global_enc_us_ascii; + default: + GLOBAL_ENC_TABLE_EVAL(enc_table, + enc = enc_from_index(enc_table, index)); + return enc; + } } int -- cgit v1.2.1