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From: Martin <martin.dowie@btopenworld.com>
Newsgroups: comp.lang.ada
Subject: Re: Pseudo code for Ada tasking
Date: Thu, 7 May 2009 05:39:59 -0700 (PDT)
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Date: 2009-05-07T05:39:59-07:00
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On May 6, 9:32=A0pm, sjw <simon.j.wri...@mac.com> wrote:
> On May 6, 9:00=A0pm, Martin <martin.do...@btopenworld.com> wrote:
>
> > On May 6, 4:18=A0am, Adrian Hoe <aby...@gmail.com> wrote:
>
> > > Hi,
>
> > > I am wondering, is there any reference or example about writing pseud=
o
> > > code for Ada tasking?
>
> > > Also, how can I model Ada tasking with a diagram?
>
> > > Thanks.
> > > --
> > > Adrian Hoe
>
> Raymond Buhr wrote a (very expensive!) book 'System Design with
> Ada' (Prentice Hall 1984) notable for a complete diagrammatic
> representation of Ada (83, of course) tasking which to my mind was
> more complicated than the Ada language.
>
> > ASGs (Ada Structure Graphs) were the natural diagram for this but I
> > don't know of a tool that supports then apart from Teamwork which has
> > long gone.
>
> > In UML, a statechart comes close. There are professional tools that
> > can produce Ada code from this (for instance, Rhapsody in Ada (from
> > iLogix, then Telelogic, now IBM-Rational).
>
> 'professional'?
>
> There are commercial tools as above, and there are open-source tools
> (not sure whether Umbrello can do this, but ColdFramehttp://coldframe.sou=
rceforge.net/coldframe/certainly can).

I haven't used/tried either of these for ages, so apologies for
missing them out. Pragsoft's UMLStudio is another example with a UML-
>Ada95 generator in it. Doesn't seem to have been updated recently and
I'm not sure it can do a statechart->task implementation or not.


> In any case, tasking and state machines don't necessarily go and-in-
> hand.
>
> --S

Your right, you do have to stereotype the class containing the
statechart as either 'task' (active) or 'non-task' (passive) and you
have to have a uml->code engine that can understand this.

Cheers
-- Martin