From: "Chad R. Meiners" <crmeiners@hotmail.com>
Subject: Re: C array to Ada pointer to unconstrained array without copying memory
Date: Tue, 7 Oct 2003 16:53:09 -0400
Date: 2003-10-07T16:53:09-04:00 [thread overview]
Message-ID: <blv981$jke$1@msunews.cl.msu.edu> (raw)
In-Reply-To: mailman.37.1065537708.25614.comp.lang.ada@ada-france.org
"Duncan Sands" <baldrick@free.fr> wrote in message
news:mailman.37.1065537708.25614.comp.lang.ada@ada-france.org...
> The problem is the bounds of course. For example, GNAT usually uses
> fat pointers, consisting of two normal pointers where one points to the
> data, and the other to the bounds. So the "clever stuff" will need to
> allocate some memory to hold the bounds and set up the fat pointer
> appropriately.
>
> Does anyone know a good way to do this? The solution only needs to
> work with GNAT. I appreciate that deallocating the pointer may need
> to be handled specially.
See http://www.adapower.com/lang/accessmem.html method 1c using
Address_To_Access_Conversions.
Page for strings, but it should work for any array type as long as you have
the representation correct.
next prev parent reply other threads:[~2003-10-07 20:53 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-07 14:43 C array to Ada pointer to unconstrained array without copying memory Duncan Sands
2003-10-07 18:30 ` tmoran
2003-10-07 19:24 ` Duncan Sands
2003-10-08 0:02 ` sk
[not found] ` <3F83540E.5000302@myob.com>
2003-10-08 9:18 ` Duncan Sands
2003-10-07 20:00 ` Jeffrey Carter
2003-10-07 20:39 ` Duncan Sands
2003-10-08 1:27 ` Jeffrey Carter
2003-10-07 20:53 ` Chad R. Meiners [this message]
2003-10-07 21:24 ` Duncan Sands
2003-10-07 22:44 ` C array to Ada pointer to unconstrained array without copyingmemory Chad R. Meiners
2003-10-07 22:52 ` Chad R. Meiners
2003-10-08 9:20 ` Duncan Sands
2003-10-08 16:16 ` C array to Ada pointer to unconstrained array withoutcopyingmemory Chad R. Meiners
2003-10-08 16:49 ` Duncan Sands
2003-10-08 2:14 ` C array to Ada pointer to unconstrained array without copying memory Robert I. Eachus
2003-10-08 9:27 ` Duncan Sands
2003-10-08 22:43 ` Robert I. Eachus
2003-10-09 9:31 ` Duncan Sands
2003-10-08 14:07 ` Steve Adams
2003-10-08 14:33 ` Preben Randhol
2003-10-09 23:04 ` Steve Adams
2003-10-09 23:11 ` Steve Adams
2003-10-08 16:30 ` Duncan Sands
2003-10-09 22:59 ` C array to Ada pointer to unconstrained array without copyingmemory Steve Adams
2003-10-10 7:02 ` Duncan Sands
2003-10-10 16:44 ` C array to Ada pointer to unconstrained array withoutcopyingmemory Steve Adams
2003-10-23 21:27 ` C array to Ada pointer to unconstrained array without copying memory Craig Carey
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox