Re: A common array

[Stephen Leake <stephen_leake@acm.org>]

"Ratson Janiv" <janiv@013.net.il> writes:

> I need to write a program that creates a random number of tasks.

Hmm. It usually helps if you tell us what you are _really_ trying to
do; often Ada has a totally different approach than you are used to.

> I need the tasks to update a common array (1 array for all the
> tasks). do I need keep the array updating in critical section (I
> know that each task will update a differnet cell in the array), if
> so how ? 

Put that common array in yet another task, or in a protected object.

> Also I need to write a mechanism that enables the task to perform
> the check twice with two differnet parameters, e.g. I call Task X to
> check Numer 4 in the array, and after it finishes, I want it to
> notify me, and also I want teh task X to check the 18 Number.

You'll need a loop in the tasks; at the top, they wait on a rendezvous
to get the number to check. Then do the check, then loop back.

You have to make sure all the tasks can terminate nicely; sometimes
that requires a Quit rendezvous.

> for the decency, I M studying Ada, and it is part of my work, so please try
> to help me as much as U can without writing the answers to me, I think some
> guide lines will be helpful.

Hope this helps.

-- 
-- Stephe