From: Andy Wingo <wingo@pobox.com>
To: Mark H Weaver <mhw@netris.org>
Cc: 13809@debbugs.gnu.org
Subject: bug#13809: Wishlist: support > 10 args to foreign functions
Date: Mon, 25 Feb 2013 10:01:41 +0100 [thread overview]
Message-ID: <87a9qs937u.fsf@pobox.com> (raw)
In-Reply-To: <87621h6xkl.fsf@tines.lan> (Mark H. Weaver's message of "Sun, 24 Feb 2013 19:34:18 -0500")
On Mon 25 Feb 2013 01:34, Mark H Weaver <mhw@netris.org> writes:
> The current limitation of 10 arguments to foreign functions is proving
> to be a problem for some libraries, in particular the Allegro game
> library.
>
> Is there a reason why raising this limit to 16 or 20 would be
> undesirable? What tradeoffs are involved?
Each arity of foreign functions gets a little VM program stub that
checks the argument count then actually does the call. We statically
generate the first N of those arities (currently 10), and then for the
rest we should dynamically allocate the objcode stubs. Dynamic
allocation is currently unimplemented.
We could raise the pregenerated size, but I think it would be better to
do the dynamic allocation thing.
Andy
--
http://wingolog.org/
next prev parent reply other threads:[~2013-02-25 9:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-25 0:34 bug#13809: Wishlist: support > 10 args to foreign functions Mark H Weaver
2013-02-25 9:01 ` Andy Wingo [this message]
2013-02-26 22:40 ` bug#13809: [PATCH] Support calling foreign functions of 10 or more arguments Mark H Weaver
[not found] ` <878v6azol2.fsf_-_@tines.lan>
2013-02-27 9:25 ` Andy Wingo
[not found] ` <87fw0ixg4p.fsf@pobox.com>
2013-02-27 22:11 ` Mark H Weaver
[not found] ` <87ppzlxv95.fsf@tines.lan>
2013-02-28 8:40 ` Andy Wingo
2013-02-28 11:40 ` Mark H Weaver
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