Subject: RE: [sv-cc] DirectC: supporting references in DirectC
From: Ghassan Khoory (Ghassan.Khoory@synopsys.com)
Date: Fri Feb 28 2003 - 10:22:02 PST
Swapnajit and I are leaning in the same direction as the feedback being sent
on the reflector. This is to postpone spending additional time discussing
references until after 3.1
Let's discuss for few minutes in the next meeting and hopefully put it
behind us.
Thanks,
/gjk
-----Original Message-----
From: owner-sv-cc@eda.org [mailto:owner-sv-cc@eda.org]On Behalf Of
Michael Rohleder
Sent: Friday, February 28, 2003 11:02 AM
To: Andrzej Litwiniuk
Cc: sv-cc@eda.org
Subject: Re: [sv-cc] DirectC: supporting references in DirectC
a) I am also against supporting references; and said this much, much
earlier,
- have a look at the last paragraph of
http://www.eda.org/sv-cc/hm/0820.html
b) Until now nobody demanded supporting of references by DPI
c) My feeling was that we reached agreement during the last call about
default values and support of call by name
This is just asking Swapahnajit and Ghassan whether we could have a poll on
this issues, since I think we can easily close them or did I
miss something ???
-Michael
Andrzej Litwiniuk wrote:
> > I have heard nobody in favor of supporting references (besides Kevin,
and I am even not sure here), therefore I have already asked
> > Swapnajit/Ghassan to start a poll on this. We should get closure on this
as soon as possilbe, because it relates to other
> > committees, which might make the stuff even more complicated.
> >
> > -Michael
>
> > > I'm hoping we can get closure on references pretty soon,
> > > i.e. don't support them. Depending on how that turns out,
> > > you probably need to communicate that in your requirements
> > > to sv-ec, Joao.
> > >
> > > Doug
>
> 1. I'm against supporting references (formal args qualified as 'ref')
> for DirectC.
> The decision whether to support 'ref' is not isolated one.
> If 'ref' is decided to be supported, C Layer will have to be re-worked.
>
> 2. I can only guess the motivation and rationale for 'ref' in SV.
>
> Most obvious is the performance, but this is already addressed with
> our C Layer solution, which actually uses passing by references
> whenever it matters.
>
> There are also some semantical consequences of using 'ref' instead
> of inout, visible mainly for aliases. But IMO this is very bad
programming
> style that should be discouraged rather than endorsed by providing
> explicit support.
>
> Regards,
> Andrzej
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