Re: Polyorb abd the DSA Annex

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On 03/08/2020 15:47, Shark8 wrote:
> On Monday, August 3, 2020 at 5:42:02 AM UTC-6, Luke A. Guest wrote:
>> On 03/08/2020 12:04, tonyg wrote:
>>> I just tried to build the git cloned copy of polyorb (failed on the configure!) with the 2020 community version of GNAT. It said I had no gnat ada compiler. It was on the path and it pointed to the gcc compiler on the path. Are they compatible? Is there still a polyorb "enthusiast" list ?
>>>
>>
>> Distributed annex is being removed from gnat due to "lack of customer interest."
> 
> This is pretty sad, and IMO, stupid; the ability to [relatively] easily make distributed applications via DSA is a killer feature and, in conjunction with Ada2020 'parallel' blocks/loops would make for a very attractive system.
> 
> IOW, the "lack of customer interest" is an excuse to shoot themselves in the foot.

The reality is a bit  more complex.

Distributed Annex is based on RPC.

Ada is largely used in the field applications, embedded, real-time. RPC 
are pretty much useless there, as well as in massively parallel 
applications.

For service-oriented sluggish applications RPC might be OK, but CORBA is 
a blocker there, because static topology/configuration is too rigid for 
such applications. (Static topology is less and less tolerated in the 
former as well)

P.S. I have an almost ready distributed Annex implementation based on 
inter process communication (no network, same box), but I have no 
information how to dock it into GNAT.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de