Re: How to set stack size of main task?

[kilgallen@eisner.decus.org (Larry Kilgallen)]

In article <3251CF5F.50B@ro.com>, Stephen & Tammy House <house@ro.com> writes:
> The main task stack size in Ada83 is determined by the RTS and or the
> OS.  Under unix, the shell has stack size limits set (see the limit
> command).  I'm not sure, but I doubt that Ada95 has done anything about
> this.  Tasks are set up by the RTS, but there is no hook to the main
> thread since it is started by the OS's loader.

On VMS, the main stack will "expand" when it runs out, although as
with any well-behaved operating system there are limits on how much
virtual memory can be spent in this endeavor (preventing an individual
user from filling the pagefile, for example).

I would hope that future Ada implementations running in memory-rich
environments (timesharing machines, not rocket ships) would support
an option to make other task stacks relatively unlimited as well.
64-bit addressing allows an individual OS process to have task
stack sizes of about 4 billion bytes, presuming the number of
tasks for a given program is limited to 4 billion as well :-).

Actually, my current need is less than 100 tasks, but I certainly
would rather get out of the business of specifying task sizes.

Larry Kilgallen