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| author | Koichi Sasada <ko1@atdot.net> | 2020-12-17 01:56:30 +0900 |
|---|---|---|
| committer | Koichi Sasada <ko1@atdot.net> | 2020-12-17 03:44:23 +0900 |
| commit | 2a3324fcd2f9681e167b2619563a5c26e1a362fe (patch) | |
| tree | ba8b8fde222250f8db8303282f98f9308264149b /encoding.c | |
| parent | c58142134cccdd31811f12aabf4f9dd3ce6a17f7 (diff) | |
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)
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/3916
Diffstat (limited to 'encoding.c')
| -rw-r--r-- | encoding.c | 13 |
1 files changed, 10 insertions, 3 deletions
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 |