unofficial mirror of guile-user@gnu.org 
 help / color / mirror / Atom feed
From: <tomas@tuxteam.de>
To: guile-user@gnu.org
Subject: Re: how to access c-array member in c-structure?
Date: Wed, 30 Mar 2016 10:07:41 +0200	[thread overview]
Message-ID: <20160330080741.GA28334@tuxteam.de> (raw)
In-Reply-To: <87zitgxui7.fsf@T420.taylan>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Wed, Mar 30, 2016 at 10:03:28AM +0200, Taylan Ulrich Bayırlı/Kammer wrote:
> Park SungMin <byulparan_eng@icloud.com> writes:
> 
> > (let ((c-type (list int int (make-list 20000 int))))
> >     (parse-c-struct
> >      ((pointer->procedure
> >        c-type
> >        (dynamic-func "make_foo" libfoo)
> >        (list int int))
> >       4 11)
> >      c-type))
> >
> > also run well…but seems less effective.(if more bigger size…2000000??) 
> 
> You could create the type object once at program startup and use it
> many times.
> 
>     (define foo-type
>       (list int int (make-list 2000000 int)))

If I understood Park SungMin right, the problem is rather with the
representation of a huge array as a list?

regards
- -- t
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)

iEYEARECAAYFAlb7iU0ACgkQBcgs9XrR2kY8iwCdG3h68BefLs69cBsc0M0gC4l8
0WwAnRpSNt2YVQASj3SwCi9Ct34zUMm5
=fB2/
-----END PGP SIGNATURE-----



  reply	other threads:[~2016-03-30  8:07 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-30  0:13 how to access c-array member in c-structure? Park SungMin
2016-03-30  8:03 ` Taylan Ulrich Bayırlı/Kammer
2016-03-30  8:07   ` tomas [this message]
2016-03-30  9:03     ` Taylan Ulrich Bayırlı/Kammer
2016-03-30 16:01       ` Park SungMin
2016-03-30 19:54         ` Taylan Ulrich Bayırlı/Kammer
2016-03-31  3:02           ` Park SungMin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.gnu.org/software/guile/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20160330080741.GA28334@tuxteam.de \
    --to=tomas@tuxteam.de \
    --cc=guile-user@gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).