Re: static objects in ADA

[dennison@telepath.com]

In article <4IaN6CA84vI3EwTh@tioman.demon.co.uk>,
  Mark Elson <marke@tioman.demon.co.uk> wrote:

> The "advice" has really annoyed me. It came from Green Hills and they
> were actually telling us that we should abandon an object-orientated
> design and use structured methods instead to avoid the overhead of
> object initialisation (which they believed would give us "long" start-up
> times). In fact, we are not creating any significantly large objects at
> start-up time, anyway, so I felt this was very bad advice. IMO, at the
> implementation level OO and structured methods might only differ in the
> organisation of code. There should be no reason why OO-designed code
> should be inherently less efficient than a structured design. Possibly
> inefficient activities such as dynamic memory allocation can be avoided,
> by design, if required. In fact we intend to do this for other reasons
> as the app will be safety-critical.

Compiler developers are notoriously anti-OO. Perhaps that is because of all
the extra work those OO features cause them. :-)

Hopefully this is a comment on their perception of OO-designed code, and not
on their compiler's efficincy in translating tagged-type code into machine
language. Our current project is realtime, is using a GreenHills compiler,
and it is OO through and through. But then, we don't really care too much
about startup time either.

--
T.E.D.

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