From: Xavier Leroy <Xavier.Leroy@inria.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Nested callbacks?
Date: Tue, 05 Jul 2011 19:31:53 +0200 [thread overview]
Message-ID: <4E134A89.7070307@inria.fr> (raw)
In-Reply-To: <4E133C2F.6050202@soton.ac.uk>
On 07/05/2011 06:30 PM, Thomas Fischbacher wrote:
>
> Dmitry Bely wrote:
>
>> Is it allowed to call a Caml closure from C (caml_callbackN_exn), that
>> calls another Caml closure internally (also with caml_callbackN_exn)?
>
> I strongly hope so! If this did not work, that would have disastrous
> consequences for the tight integration of Caml and Python which we are
> using. (Well, so far, we never encountered a problem with that. And the
> documentation does not warn against doing this - so, should it not work,
> that should be considered a bug.)
Indeed, it should work, and I see no reason why nested callbacks could
fail. Callbacks do save some Caml-specific state and restore it
before returning, but they use the stack to do so, so they should be
reentrant. Please file a bug report if you find out they are not.
- Xavier Leroy
next prev parent reply other threads:[~2011-07-05 17:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-05 16:06 Dmitry Bely
2011-07-05 16:25 ` Guillaume Yziquel
2011-07-05 16:30 ` Thomas Fischbacher
2011-07-05 17:31 ` Xavier Leroy [this message]
2011-07-05 17:52 ` Dmitry Bely
2011-07-05 18:06 ` rixed
2011-07-05 18:17 ` Dmitry Bely
2011-07-06 9:00 ` Dmitry Bely
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