Re: DYNAMIC ADA TASK CREATION?

[john@nospam.demon.co.uk (John McCabe)]

On Wed, 18 Jun 2003 09:20:01 +0000 (UTC), Georg Bauhaus
<sb463ba@d2-hrz.uni-duisburg.de> wrote:


>: Correct.  But if you don't want to get stuck there, do this instead:
>: 
>:     -- task type t as above
>:     type ta is access t;
>: 
>:     type ts is array (positive range <>) of ta := new t;
>                                                 ^^^^^^^^  
>I think I got the idea and made me program to see the tasks working
>outside the declare block. A good hint!
>But is new t on the line above some new default initialisation
>construct, or meant to abbreviate something? (The compiler complains.)
: 
:     declare
:       the_ts : ts (1 .. n);
:     begin
:       --  do something with the tasks
:       --  NB, CAN pass this once all the tasks have been created.
:     end;
: 

I'm not surprised, you're trying to initialise a type!! Simon did say
he hadn't compiled this though!

You need to remove the ' := new t' at the end, then actually create
the tasks something like:

-- task type t as above
type ta is access t;

type ts is array (positive range <>) of ta;

declare
   the_ts : ts (1 .. n);
begin
   for Index in 1 .. n loop
      the_ts(n) := new t;
   end loop;

   --  do something with the tasks
   --  NB, CAN pass this once all the tasks have been created.
end;

Just a vague thought....does..

declare
   the_ts : ts (1 .. n) = (others => new t);
begin
....

compile?


Best Regards
John McCabe

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