Re: Purposes of Ada.Task_Identification

[tmoran@bix.com]

> I occasionally wonder what the intended purpose of the package
>Ada.Task_Identification is.
  It's sometimes handy for a resource locking routine to know if
the currect request in fact comes from the current owner of the
resource.  A comparison of the Id of the owner to that of the
requestor will answer that question.
  Some compilers will return True for Is_Callable(the environment task)
while the main program is running, and False after it has terminated
(and is waiting for child tasks to terminate).  I understand there's
an AI in the works to make this standard practice.  Where it works,
it allows a long-running task to detect that the program is trying
to stop, and to stop itself.  This handles situations where a
"select ... or terminate", or an abort, are inappropriate.
  Sometimes in debugging a multi-tasking system it's nice to be
able to log some activity and include in the log which task performed
that activity.
  That's just how I use Ada.Task_Identification.