From: Han-Wen <hanwen@cs.uu.nl>
Cc: Miroslav Silovic <miro@puremagic.com>,
Marius Vollmer <mvo@zagadka.ping.de>,
guile-devel@gnu.org
Subject: Re: gen gc
Date: Fri, 19 Jul 2002 11:39:41 +0200 [thread overview]
Message-ID: <15671.56925.864831.996455@blauw.xs4all.nl> (raw)
In-Reply-To: <87r8i0s706.fsf@raven.i.defaultvalue.org>
rlb@defaultvalue.org writes:
> Han-Wen Nienhuys <hanwen@cs.uu.nl> writes:
>
> > Anyways, the goops code only uses the address for printing, so it
> > would safe to return the address. I suggest that the documentation be
> > changed to
> >
> > "Return the address of OBJ as an integer. Note that this
> > address may change between runs due to garbage collection."
>
> Alternately if we really need a unique value, and if it's only used
> for printing -- couldn't we just use a good old fashioned integer
> counter? What's the point of printing the address of the object if
> it's only the transient address of the object, unless perhaps the
> value's only intended for debugging?
What do you mean by integer counter? You have to store a reference to
the object when object-address is first invoked on it; then you might
as well store the object in a list and simply mark it conservatively.
(and then you have to add support to maintain the list weakly --
argh).
The value is only intended for human consumption (i.e. debugging)
--
Han-Wen Nienhuys | hanwen@cs.uu.nl | http://www.cs.uu.nl/~hanwen
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next prev parent reply other threads:[~2002-07-19 9:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-17 21:59 gen gc Han-Wen
2002-07-17 22:54 ` Marius Vollmer
2002-07-17 23:12 ` Han-Wen
2002-07-18 12:08 ` Miroslav Silovic
2002-07-18 12:08 ` Han-Wen Nienhuys
2002-07-19 3:59 ` Rob Browning
2002-07-19 9:39 ` Han-Wen [this message]
2002-07-19 15:40 ` Rob Browning
2002-07-19 19:07 ` Tom Lord
2002-07-19 21:07 ` Han-Wen Nienhuys
2002-07-19 21:32 ` Rob Browning
2002-07-19 22:33 ` Han-Wen
2002-07-19 23:31 ` Rob Browning
2002-07-19 22:58 ` Marius Vollmer
2002-07-18 16:00 ` Dirk Herrmann
2002-07-18 16:21 ` Han-Wen Nienhuys
2002-07-19 22:55 ` Marius Vollmer
2002-07-20 8:06 ` Neil Jerram
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