From: gwinn@ma.ultranet.com (Joe Gwinn)
Subject: Re: Urgent question: malloc and ada...
Date: 1998/04/12
Date: 1998-04-12T00:00:00+00:00 [thread overview]
Message-ID: <gwinn-1204981927580001@d13.dial-1.cmb.ma.ultra.net> (raw)
In-Reply-To: dewar.892208692@merv
In article <dewar.892208692@merv>, dewar@merv.cs.nyu.edu (Robert Dewar) wrote:
> Joe says
>
> (of interfacing C and Ada)
>
> <<and better with Ada95, but is often tricky
> >>
>
> It would be interesting to know in more detail what "tricky" things you
> have run in to.
Most of the trouble has been in passing data structures (records in Ada,
structs in C/C++) from one world to the other. Pragma interface C has
worked mostly as expected, but getting the data across the divide
undamaged has not. This was where the rep spec on an enumeration type
problem first surfaced. These data structures are most often used for
message handling, which is how the three worlds of our system talk to each
other. One world is Ada95, and the other two are different flavors of
C/C++ in different boxes under different operating systems. One kind of
box and operating system houses Ada95 and one kind of C, and the other
kind of box and operating system houses the other kind of C/C++.
I don't know how much of the details of what has caused recent trouble is
universal, but I do know that passing data between languages and compilers
has always been a rich source of trouble, for all languages and compilers,
for my entire career, so I don't expect that it will ever change.
Joe Gwinn
next prev parent reply other threads:[~1998-04-12 0:00 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-04-07 0:00 Urgent question: malloc and ada Guido Tesch
1998-04-09 0:00 ` Joe Gwinn
1998-04-10 0:00 ` Robert Dewar
1998-04-12 0:00 ` Joe Gwinn [this message]
1998-04-12 0:00 ` Enumeration Types (was: Urgent question: malloc and ada) Matthew Heaney
1998-04-13 0:00 ` Mark A Biggar
1998-04-10 0:00 ` Urgent question: malloc and ada...READ/NEW/FOLLOWUP Larry Kilgallen
1998-04-12 0:00 ` Joe Gwinn
1998-04-14 0:00 ` Robert Dewar
1998-04-16 0:00 ` Joe Gwinn
1998-04-17 0:00 ` Robert Dewar
1998-04-18 0:00 ` Joe Gwinn
1998-04-18 0:00 ` Robert Dewar
1998-04-25 0:00 ` Joe Gwinn
1998-04-26 0:00 ` Robert Dewar
1998-04-26 0:00 ` Jonathan Guthrie
1998-04-26 0:00 ` Simon Wright
1998-04-26 0:00 ` Larry Kilgallen
1998-04-27 0:00 ` Stephen Leake
1998-04-26 0:00 ` Robert Dewar
1998-04-30 0:00 ` Robert I. Eachus
1998-04-30 0:00 ` Urgent question: malloc and ada Larry Kilgallen
[not found] ` <matthew_heaney-ya023680003004981723000001@news.ni.net>
1998-05-01 0:00 ` Robert Dewar
1998-05-01 0:00 ` Larry Kilgallen
1998-05-02 0:00 ` Robert Dewar
1998-05-02 0:00 ` Jonathan Guthrie
1998-05-03 0:00 ` Richard Kenner
1998-05-03 0:00 ` Jonathan Guthrie
1998-05-03 0:00 ` Richard Kenner
1998-05-03 0:00 ` Robert Dewar
1998-05-03 0:00 ` Robert Dewar
1998-05-03 0:00 ` Larry Kilgallen
1998-05-01 0:00 ` Robert Dewar
1998-05-01 0:00 ` Charles Hixson
1998-05-02 0:00 ` Jonathan Guthrie
1998-05-02 0:00 ` Corey Minyard
1998-05-06 0:00 ` Robert I. Eachus
1998-05-12 0:00 ` Craig T. Spannring
1998-05-12 0:00 ` Robert Dewar
1998-05-01 0:00 ` Urgent question: malloc and ada...READ/NEW/FOLLOWUP Fergus Henderson
1998-05-01 0:00 ` Joe Gwinn
1998-05-02 0:00 ` Larry Kilgallen
1998-05-05 0:00 ` Robert Dewar
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