Re: Moving to pointer-sized GType?
- From: Alex Larsson <alexl redhat com>
- To: George <jirka 5z com>
- Cc: <gnome-hackers gnome org>, <gnome-list gnome org>, <timj gtk org>
- Subject: Re: Moving to pointer-sized GType?
- Date: Fri, 14 Sep 2001 17:01:42 -0400 (EDT)
On Fri, 14 Sep 2001, George wrote:
> On Fri, Sep 14, 2001 at 12:08:48PM -0400, Alex Larsson wrote:
> > These can all be found by eliminating all appearances of guint in the
> > output of 'find -name "*.c" | xargs grep -C2 _get_type', and we have done
> > so for Gtk+, Gimp and gnome-libs. But the possiblility exists that some
> > code stores GtkTypes in 32bit integers in some other fashion.
> > Doing this change will almost certainly cause some apps to segfault on
> > 64bit while working on 32bit until all our apps are fixed.
> > We (the Gtk+ team) are interested in the opinion of developers (especially
> > on 64bit systems) on this change. Do you think it is worth it? Do you know of any
> > code that stores GtkTypes in uints currently?
> I think this is a very good change for a number of other reasons. For one it
> makes the alignment on the object structure implicitly pointersized, which
> avoids some other warnings on alpha (though I think none of them are bad, but
> could be). Also just getting and using 64bit values should be faster then
> 32bit gets anyway. So I think this is definately a step in the right
> (also note that since on alpha the alignment of an object structure is on
> 64bit boundaries since it contains pointers, this doesn't increase size
> of structures neither on i386 nor on alpha)
The actual GType value is stored in the class structure, so no object
structures are actually changed, but i see your point.
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