Re: Tasking issues

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On Sun, 12 Aug 2007 09:00:27 GMT, anon wrote:

>    -- abort tasks.  But because get_name may be in the process of 
>    -- obtaining data from standard_input. it may require a CR/LF 
>    -- to be entered to fully abort the 'get_name' task.

No, it should abort Get_Line immediately. The operations deferring abort
are listed in 9.8(5).

>  abort get_name ;

Aborting tasks is a bad idea, almost always. If you have some shared
objects which states might be changed outside an abort-deferred operation,
then aborting will corrupt them. It is not always possible to do everything
from a protected action (which is abort-deferred).

Though asynchronous transfer of control is very much like abort, one can
limit the scope of what gets aborted.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de