From: Bart Schaefer <schaefer@brasslantern.com>
To: Oliver Kiddle <okiddle@yahoo.co.uk>
Cc: "zsh-workers@zsh.org" <zsh-workers@zsh.org>
Subject: Re: Performance tests of quoting and dequoting, printf -v turned out slow
Date: Sun, 11 Mar 2018 00:33:46 -0800 [thread overview]
Message-ID: <CAH+w=7Z0_O2Fke5j2M3z28vfJGREyNuEcf1Fybjuh-nHRxWHYg@mail.gmail.com> (raw)
In-Reply-To: <19380.1520696454@thecus>
On Sat, Mar 10, 2018 at 7:40 AM, Oliver Kiddle <okiddle@yahoo.co.uk> wrote:
>
> What may affect things is whether or not zsh was built to use
> open_memstream from libc. FreeBSD and GNU libc have open_memstream.
Indeed:
schaefer[556] Src/zsh -f
% qflag() {
local OUTPUT
repeat 10000; do
OUTPUT="${(q)INPUT}"
done
}
% typeset -F SECONDS=0; qflag; print $SECONDS
0.0282280000
% prtf() {
local OUTPUT
repeat 10000; do
printf -v OUTPUT '%q ' "$INPUT"
done
}
% typeset -F SECONDS=0; prtf; print $SECONDS
3.8363050000
%
schaefer[557] grep -i memstream config.h
/* Define to 1 if you have the `open_memstream' function. */
/* #undef HAVE_OPEN_MEMSTREAM */
next prev parent reply other threads:[~2018-03-11 8:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-09 6:22 Sebastian Gniazdowski
2018-03-09 13:23 ` Stephane Chazelas
[not found] ` <etPan.5aa28b1e.77e79f33.159ee@AirmailxGenerated.am>
2018-03-09 13:39 ` Sebastian Gniazdowski
2018-03-09 14:53 ` Stephane Chazelas
2018-03-10 8:36 ` Sebastian Gniazdowski
2018-03-10 15:03 ` Stephane Chazelas
[not found] ` <etPan.5aa3f656.1efba338.159ee@AirmailxGenerated.am>
2018-03-10 16:53 ` Sebastian Gniazdowski
2018-03-10 15:40 ` Oliver Kiddle
2018-03-11 8:33 ` Bart Schaefer [this message]
2018-03-13 11:28 ` Sebastian Gniazdowski
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