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From: Kevin Ryde <user42@zip.com.au>
Cc: guile-user@gnu.org
Subject: Re: searching: example of C extension implementing port
Date: Wed, 08 Mar 2006 07:55:43 +1100	[thread overview]
Message-ID: <87k6b6km9c.fsf@zip.com.au> (raw)
In-Reply-To: IVQ701$0BF9335B9BD287959E67AEF6E431F2DD@poste.it

"Marco Maggi" <marco.maggi-ipsu@poste.it> writes:
>
> is there a sample extension implementing an input/output
> channel?

You'll have seen the "Soft Ports" node in the manual, it's pretty
straightforward.

> I'm thinking of a memory channel (not an interface
> to a file or hardware port), something like the string
> port; is the channel API of Guile worth learning for this,

If it's for a lot of bytes, then the scheme-level bits will be very
slow (read/write only 1 byte at a time) and you might have to break
out some C.  (Getting that C level bits into scheme would be a good
thing one day.)

> or is it better to write something of my own?

For reading OLE file contents I did my own read func.  But whether
that's good probably depends what and how much other code is going to
use the port.


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  parent reply	other threads:[~2006-03-07 20:55 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-06 21:43 searching: example of C extension implementing port Marco Maggi
2006-03-07  9:15 ` Ludovic Courtès
2006-03-07 20:55 ` Kevin Ryde [this message]
  -- strict thread matches above, loose matches on Subject: below --
2006-03-07 22:23 Marco Maggi
2006-03-08 22:45 Marco Maggi

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