Re: Ada

["Marin D. Condic" <mcondic-nospam@quadruscorp.com>]

Andy Glew wrote:
> 
> > > If you can get C and Unix for free why do you need Ada and Ada-OS?
> 
> Just for my own knowledge: does GNU Ada (GNATS) support a full
> Ada-OS, including the real-time and multithreading constructs like
> rendezvous?  Do these run on stock hardware? On LINUX?
> 
There are others on this group who can provide much more detailed and
authoritative answere, but the short form is this: Yes, GNAT supports
Ada's tasking features and does a pretty good job of it. On a platform
that has an OS of its own, (WindowsNT, Flavors of Unix, etc.) GNAT maps
to operating system primitives to support tasks. On a bare machine, you
need to provide a RTOS such as RTEMS to provide the tasking primitives.

This is generally the case for all modern implementations of Ada, so
tasking is widely available. It works quite well, provided that the
application implementors understand tasks and know when they should or
should not be used.

BTW: I don't see how this could be perceived as a handicap to Ada. It
provides a facility most other languages do not, yet if your application
has no need of it, there is no real penalty. How do you see it as a
barrier to using Ada?

MDC
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