From: Eli Zaretskii <eliz@gnu.org>
To: Vasilij Schneidermann <mail@vasilij.de>
Cc: p.stephani2@gmail.com, eller.helmut@gmail.com, emacs-devel@gnu.org
Subject: Re: Some dynamic module questions
Date: Fri, 27 Nov 2020 17:09:04 +0200 [thread overview]
Message-ID: <83pn3yomzz.fsf@gnu.org> (raw)
In-Reply-To: <20201127135406.GI1558@odonien.localdomain> (message from Vasilij Schneidermann on Fri, 27 Nov 2020 14:54:06 +0100)
> Date: Fri, 27 Nov 2020 14:54:06 +0100
> From: Vasilij Schneidermann <mail@vasilij.de>
> Cc: eller.helmut@gmail.com, p.stephani2@gmail.com, emacs-devel@gnu.org
>
> > So you'd need to use vectors instead.
>
> Isn't that remarkably slow though? If you either pass a vector of
> integers on the Lisp side and recreate it on the C side using Flength
> and Farev or have a char array on the C side and create a Lisp array for
> the Lisp side, I can see that operation to outweigh otherwise fast
> foreign code easily. I've only experimented with encoding unibyte
> strings to/from hex strings though when using cryptographic code and
> that was slow enough to ruin the benefit of FFI.
I don't yet see why would you need to send data to a module. Why not
generate that data in the module code itself, based on some Lisp you
get from Emacs?
next prev parent reply other threads:[~2020-11-27 15:09 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-27 10:43 Some dynamic module questions Helmut Eller
2020-11-27 11:50 ` Philipp Stephani
2020-11-27 12:01 ` Helmut Eller
2020-11-27 12:17 ` Zhu Zihao
2020-11-27 12:25 ` Helmut Eller
2020-11-27 12:47 ` Eli Zaretskii
2020-11-27 12:59 ` Helmut Eller
2020-11-27 13:29 ` Eli Zaretskii
2020-11-27 13:32 ` Eli Zaretskii
2020-11-27 13:54 ` Vasilij Schneidermann
2020-11-27 15:09 ` Eli Zaretskii [this message]
2020-11-27 15:21 ` Vasilij Schneidermann
2020-11-27 15:26 ` Eli Zaretskii
2020-12-02 11:43 ` Philipp Stephani
2020-12-03 5:30 ` Richard Stallman
2020-12-03 8:08 ` Lars Ingebrigtsen
2020-12-03 8:42 ` Helmut Eller
2020-12-03 11:49 ` Philipp Stephani
2020-12-03 15:13 ` Stefan Monnier
2020-12-06 17:04 ` Philipp Stephani
2020-11-27 14:06 ` Stefan Monnier
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