Re: How to run a GNAT program without starting a terminal session

[Shark8 <onewingedshark@gmail.com>]

On Wednesday, July 18, 2018 at 1:37:10 AM UTC-6, björn lundin wrote:
> On 2018-07-17 23:12, Shark8 wrote:
> > A lot of the cases I've seen where daemons are used/needed are because the language [PHP in this case] didn't have any notion of TASKs and DELAYs -- rather frustrating to come across when it's so trivially easy in Ada.
> 
> No, that is not it at all.
> A daemon is a detached background process, like services are on windows.

I never said it wasn't.
What I said was that the lack of TASK and DELAY necessitated the use of daemons in several PHP-based systems I've worked on.

> They have no user interface and are supposed to run a long time.
> webservers, mailservers etc are typically daemons.
So are things that (eg) clean the cache, ensure that some particular process is still active, and/or start some processing at timed intervals; I've seen each of these as a daemon, often as part of a larger system where a TASK and/or TASK/DELAY combo would be appropriate.

> Has absolutely nothing to do whit language/tasks/delays at all
> 
> <https://en.wikipedia.org/wiki/Daemon_%28computing%29>
Again, look at the above, think in terms of whole system; even if the 'system' includes manual administration. You're reading what I said backwards: it's not that Daemons are about TASK, it's that daemons are needed because the particular systems I was involved in had no notion of multi-threading and instead stitched together a system emulating it [as some level] via daemons.