From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED.yTvCNOh9TRCAIcX40YItlQ.user.gioia.aioe.org!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Why couldn't an operating system be written in ada Date: Wed, 27 Feb 2019 18:29:46 +0100 Organization: Aioe.org NNTP Server Message-ID: References: <4s8rud$9j3@tribune> <792fba1b-7a54-4d00-ae85-e6bd0737f001@googlegroups.com> NNTP-Posting-Host: yTvCNOh9TRCAIcX40YItlQ.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:60.0) Gecko/20100101 Thunderbird/60.5.1 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.9.2 Xref: reader01.eternal-september.org comp.lang.ada:55703 Date: 2019-02-27T18:29:46+01:00 List-Id: On 2019-02-27 18:04, russ lyttle wrote: > On 2/27/19 11:01 AM, Dmitry A. Kazakov wrote: >> On 2019-02-27 15:06, russ lyttle wrote: >> >>> Thus my desire for an OS and Ada not dependent on any POSIX layer. >>> Still digging, but it looks to me like gnat depends on a POSIX layer. >>> Is that true? >> >> The GNAT RTS is capable to use pthreads if you mean that. Nothing >> more. In fact if you look at the GNAT run-time you will see lots of >> OS-specific calls. So, no GNAT RTS does not depend on POSIX. >> > I thought I was seeing POSIX Signals and Priority also. When tasking is backed by pthreads then that is a rational choice. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de