From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.5-pre1 (2020-06-20) on ip-172-31-74-118.ec2.internal X-Spam-Level: X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.5-pre1 Path: eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED.2uCIJahv+a4XEBqttj5Vkw.user.gioia.aioe.org!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Polyorb abd the DSA Annex Date: Mon, 3 Aug 2020 16:16:13 +0200 Organization: Aioe.org NNTP Server Message-ID: References: <283e0473-163b-425d-ae8b-5cff2b15b3ado@googlegroups.com> NNTP-Posting-Host: 2uCIJahv+a4XEBqttj5Vkw.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.9.2 Xref: reader01.eternal-september.org comp.lang.ada:59642 List-Id: 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