From: Hilaire Fernandes <hilaire@ext.cri74.org>
Cc: Guile user <guile-user@gnu.org>
Subject: Re: C++ application linked with guile dos not quite
Date: 18 Jun 2002 16:37:50 +0200 [thread overview]
Message-ID: <1024411071.6804.3.camel@tice> (raw)
In-Reply-To: <15631.14600.194325.589914@minos.phy.bnl.gov>
I do not use any scm_ methods actualy, I do not know anything about
them. I do not know if guile use it internaly then wait for it to be
unprotected.
Well I am wondering what is for scm_protect_object().
Is there some special procedure to free memory from a SCM object?
For example the value returned by a call to guile procedure?
Hilaire
Le mar 18/06/2002 à 15:43, Brett Viren a écrit :
> CDDP 40 - TICE writes:
> > When guile is embedded in a C++ aplication, is there any garbage
> > collection to take care of ?
>
> Nothing specific about C++, however, if you store a returned SCM value
> that is not referenced by Guile, you should call scm_protect_object()
> on it. I do this for example in a strip chart that plots a guile
> procedure. I need to call scm_protect_object() when the SCM
> containing the proc. is created and then scm_unprotect_object() when
> my chart object dies. I happen to store this SCM object in two places
> in C++, both need "protection".
>
> Maybe if you are calling scm_protect_object() but failing to call
> scm_unprotect_object() then the garbage collector is waiting for the
> reference count to go to zero? (I'm no expert, so take this with a
> grain of salt).
>
> -Brett.
>
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next prev parent reply other threads:[~2002-06-18 14:37 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-17 13:24 C++ application linked with guile dos not quite Hilaire Fernandes
2002-06-18 8:25 ` CDDP 40 - TICE
2002-06-18 13:43 ` Brett Viren
2002-06-18 14:37 ` Hilaire Fernandes [this message]
2002-06-18 14:45 ` Brett Viren
2002-06-18 17:26 ` Marius Vollmer
2002-06-19 8:02 ` CDDP 40 - TICE
2002-06-19 11:14 ` Marius Vollmer
2002-06-19 13:19 ` CDDP 40 - TICE
2002-06-19 14:09 ` Brett Viren
2002-06-19 16:42 ` CDDP 40 - TICE
-- strict thread matches above, loose matches on Subject: below --
2002-06-17 13:23 CDDP
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