🚀 go-pugleaf

Frank Clarke wrote:

> I asked on <bit.listserv.ispf-l> before realizing it was the wrong
> venue for the question:
>
> Is there an execution penalty for any of these forms:
>
>  (a) "ISPEXEC  ..some command.."
>  (b) address ISPEXEC "..some command.."
>  (c) address ISPEXEC
>      "..some command.."
>
> Is the answer different in other addressors ?
>
> Frank Clarke
> Tampa Area REXX Programmers' Alliance
> Member of the REXX Language Association
> Join us at http://www.rexxla.org
> (Remove the currency symbol before replying.)


Hi

Some Years ago I programmed a lot ISPF in CLIST. I used a CLIST system
variable that gave the system resource manager units back.
I asume that the same variable is available under REXX as well. Find it
and do some test shot taking the figure before and after executing the
command. I will think that there is minor differences and therefore is
is not important.

Regards
Einar Clementz, Oslo, Norway.

On Sat, 03 Jan 1998 00:05:05 GMT nisus$@mindspring.com (Frank Clarke) wrote:

[Posted and mailed]

:>I asked on <bit.listserv.ispf-l> before realizing it was the wrong
:>venue for the question: 

:>Is there an execution penalty for any of these forms: 

:> (a) "ISPEXEC  ..some command.."

I would expect this to be the most expensive. It requires dispatching a TASK
to run ISPEXEC which will then perform the command.

:> (b) address ISPEXEC "..some command.."
:> (c) address ISPEXEC 
:>     "..some command.."

I would expect these to be virtually identical. I think REXX initializes an
environment only once, even if called many times. If you are doing multiple
ISPF commands (c) is more readable.

--
Binyamin_Dissen@theoffice.net
Binyamin Dissen <bdissen@netvision.net.il>

Director, Dissen Software, Bar & Grill - Israel

As to the ADDRESS command, REXX does not do any initialization. The
address command simply tell rexx where to route the commands to. One may
use the "CurAddr = Address()" to determine if the current address space
is the ine you want, or to save off and restore the address. i.e.

My_Procesure:
  x = Address()
  Address 'ISPEXEC'
  some code
  some more code
  even further code
  Address x
Return
The actual Address command only updates the internal variable REXX keeps
to route system commands, and has virtually no overhead

Mickey

Frank Clarke wrote:
> 
> I asked on <bit.listserv.ispf-l> before realizing it was the wrong
> venue for the question:
> 
> Is there an execution penalty for any of these forms:
> 
>  (a) "ISPEXEC  ..some command.."
>  (b) address ISPEXEC "..some command.."
>  (c) address ISPEXEC
>      "..some command.."
> 
> Is the answer different in other addressors ?
> 
> Frank Clarke
> Tampa Area REXX Programmers' Alliance
> Member of the REXX Language Association
> Join us at http://www.rexxla.org
> (Remove the currency symbol before replying.)