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bug#31138: Native json slower than json.el
From: |
Eli Zaretskii |
Subject: |
bug#31138: Native json slower than json.el |
Date: |
Mon, 22 Apr 2019 20:12:18 +0300 |
> Date: Mon, 22 Apr 2019 19:49:28 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: p.stephani2@gmail.com, sebastien@chapu.is, yyoncho@gmail.com,
> 31138@debbugs.gnu.org
>
> Btw, we could somewhat speed up even the case where we do call
> code_convert_string, by avoiding the call to make_specified_string.
Like this:
diff --git a/src/json.c b/src/json.c
index 16500bc..48aeccf 100644
--- a/src/json.c
+++ b/src/json.c
@@ -225,8 +225,12 @@ json_has_suffix (const char *string, const char *suffix)
static Lisp_Object
json_make_string (const char *data, ptrdiff_t size)
{
- return code_convert_string (make_specified_string (data, -1, size, false),
- Qutf_8_unix, Qt, false, true, true);
+ struct coding_system coding;
+ setup_coding_system (Qutf_8_unix, &coding);
+ coding.mode |= CODING_MODE_LAST_BLOCK;
+ coding.source = data;
+ decode_coding_object (&coding, Qnil, 0, 0, size, size, Qt);
+ return coding.dst_object;
}
/* Create a multibyte Lisp string from the NUL-terminated UTF-8
How does this fare in your benchmarks?
- bug#31138: Native json slower than json.el, (continued)
- bug#31138: Native json slower than json.el, Dmitry Gutov, 2019/04/22
- bug#31138: Native json slower than json.el, Eli Zaretskii, 2019/04/22
- bug#31138: Native json slower than json.el, Dmitry Gutov, 2019/04/22
- bug#31138: Native json slower than json.el, Eli Zaretskii, 2019/04/23
- bug#31138: Native json slower than json.el, Dmitry Gutov, 2019/04/23
- bug#31138: Native json slower than json.el, Eli Zaretskii, 2019/04/23
- bug#31138: Native json slower than json.el, Eli Zaretskii, 2019/04/22
- bug#31138: Native json slower than json.el,
Eli Zaretskii <=
- bug#31138: Native json slower than json.el, Dmitry Gutov, 2019/04/22
- bug#31138: Native json slower than json.el, Dmitry Gutov, 2019/04/22
- bug#31138: Native json slower than json.el, Eli Zaretskii, 2019/04/22
- bug#31138: Native json slower than json.el, Dmitry Gutov, 2019/04/22
- bug#31138: Native json slower than json.el, Eli Zaretskii, 2019/04/23
- bug#31138: Native json slower than json.el, Philipp Stephani, 2019/04/23
- bug#31138: Native json slower than json.el, Eli Zaretskii, 2019/04/23
- bug#31138: Native json slower than json.el, Dmitry Gutov, 2019/04/23
- bug#31138: Native json slower than json.el, Richard Stallman, 2019/04/23
- bug#31138: Native json slower than json.el, Dmitry Gutov, 2019/04/21