Sorry, but it can pull; just the externals - use PARSE EXTERNAL instead of PARSE PULL
Regards, Richard Schuh > -----Original Message----- > From: The IBM z/VM Operating System > [mailto:ib...@listserv.uark.edu] On Behalf Of Alan Altmark > Sent: Friday, July 10, 2009 10:53 AM > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: Newbie question > > On Friday, 07/10/2009 at 12:56 EDT, Sterling James > <ssja...@dstsystems.com> wrote: > > If I have a quest, usera, running a rexx exec, REXX1, while > disconnected, and > > userb (priv c) issues a "SEND USERA REXX2"; Where is the "REXX2" > > queued? Or how can rexx1 pull that command so it > will not > > execute when REXX1 ends? > > There are two queues in CMS: > 1. The Program Stack > 2. The Terminal Input Buffer > > A PULL statement will read from the program stack. When the > program stack is empty, PULL will read from the terminal > input buffer. If the terminal input buffer is empty, then > PULL will read from the console (VM READ). > > The QUEUED() and EXTERNALS() functions are used to determine > the number of items in the program stack and terminal input > buffer, respectively. So to discard things typed on the > console or sent via SEND while your program was busy: > > do queued() + externals() > pull . > end > > Note that PULL cannot "reach around" the program stack and go > directly to the terminal input buffer, which is why the > program must pull things off the program stack first. This > technique is considered to be an unrefined display of brute > force. A polite program will not arbitrarily destroy the > content of the program stack in case it was placed there > prior to invocation of this program, and will jump through > hoops to read and restore the program stack to its entry condition. > > Alan Altmark > z/VM Development > IBM Endicott >
