Re: Timeout or agreement

[Patrick Hohmeyer <pi3_1415926536@yahoo.ca>]

And Meresup wrote :

> My problem is to wait for the agreement of a sub routine or raise an
> response_error exception on timeout. It's so easy to do it with logical
> programming that I don't see the way to do it in a sequential programm.
> Can u help?
> 
> Explanation :
> I send a data to serial port
> I'd like to wait for the OK flag of the called procedure or a timeout.
> What could be the correct structure????????

TASK, what you need is a task.

To do what you want you need a second thread or process (always).
Your logical language seems to encapsulate the thread creation for you,
in Ada you need to define a task or a task type.
This is a rather complicated matter, so search yourself a book /
online tutorial about it.

Another word :
As you probably want to stop the thread waiting on the serial port,
you may run into problems.
Stopping a task in the middle of it's execution can leave the
system in an inconsistent state, so be sure to find a *very* *good*
exemple befor doing it.

Have fun ;-)

-- 
Patrick Hohmeyer