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From: Brett Viren <bv@bnl.gov>
Cc: Guile user <guile-user@gnu.org>
Subject: Re: C++ application linked with guile dos not quite
Date: Tue, 18 Jun 2002 09:43:36 -0400	[thread overview]
Message-ID: <15631.14600.194325.589914@minos.phy.bnl.gov> (raw)
In-Reply-To: <1024388708.23129.28.camel@tice>

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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  reply	other threads:[~2002-06-18 13:43 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 [this message]
2002-06-18 14:37     ` Hilaire Fernandes
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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