From: Gerd Stolpmann <info@gerd-stolpmann.de>
To: Alexsandro Soares <a_s_soares@yahoo.com.br>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] UDP client
Date: Fri, 30 Mar 2007 13:28:09 +0200 [thread overview]
Message-ID: <1175254090.1530.225.camel@localhost.localdomain> (raw)
In-Reply-To: <641576.48378.qm@web51609.mail.re2.yahoo.com>
Well, there is no binding that would allow you to do that (emitting
SIGIO when a datagram arrives). In my opinion it is better not to use
SIGIO for new code, because signals are hard to manage.
So my advice would be: Rewrite it. Use either select or threads or both
for receiving datagrams in parallel with other activities.
Gerd
Am Donnerstag, den 29.03.2007, 19:23 -0700 schrieb Alexsandro Soares:
> Hi all,
>
> I'm working in an UDP client, but I can't figure out how to get the same behaviour, in OCaml, such as the C code below:
>
> -----------------------------------------------------------------------------------------------
>
> sigset_t sigmask;
>
> sigemptyset(&sigmask);
> sigaddset(&sigmask, SIGIO);
> sigprocmask(SIG_BLOCK, &sigmask, NULL);
>
> /*
> * Open UDP socket.
> */
> if( (sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
> return sock ; /* Can't open socket. */
> }
>
> if (fcntl(sockfd, F_SETOWN, getpid()) == -1) return sock;
>
> val = fcntl(sockfd, F_GETFL, 0) ;
>
> val |= O_NONBLOCK ;
> val |= FASYNC;
> fcntl(sockfd, F_SETFL, val) ;
>
> ------------------------------------------------------------------------------------
>
> Could anyone help me?
>
> Thanks,
>
> Alex
>
>
>
>
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--
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Gerd Stolpmann * Viktoriastr. 45 * 64293 Darmstadt * Germany
gerd@gerd-stolpmann.de http://www.gerd-stolpmann.de
Phone: +49-6151-153855 Fax: +49-6151-997714
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prev parent reply other threads:[~2007-03-30 11:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-30 2:23 Alexsandro Soares
2007-03-30 11:28 ` Gerd Stolpmann [this message]
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