DMSCALLER returned the name of the calling load module - not VMSTART. Not to worry - running the chain of PSD's seems to work, I'll just keep my fingers crossed that it stays that way. -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Don Russell Sent: Tuesday, 10 July 2007 11:29 AM To: [email protected] Subject: Re: How to determine if running as a multitasking CMS app
Not sure if this will work.... but... Can you use DMSCALLER to "look back" to see who called you... do that repeatedly (looking further and further back) until you: A - find the origin of the universe you currently know or B - find VMSTART You would only need to do this one time when your program starts, then set your own flag for other parts to check as needed. Or.... (untested), try calling an MT function (that actually requires MT).... if it works, you're MT; if not, you're not. (Might need an ESPIE or similar routine to "catch" an abend.) Gillis, Mark wrote: > Unfortunately, not applicable to what I'm doing - the module where I'm > doing this is CMSCALL'd by a client application, so it's not linked in, > and I need to maintain backward compatibility, so it needs to stay that > way. > > Good idea, though. > > Mark Gillis > Senior Software Engineer > Tel: +61 2 9429 2337 > Fax: +61 2 9429 2394 > [EMAIL PROTECTED] > > -----Original Message----- > From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On > Behalf Of Alan Altmark > Sent: Tuesday, 10 July 2007 10:59 AM > To: [email protected] > Subject: Re: How to determine if running as a multitasking CMS app > > On Tuesday, 07/10/2007 at 10:16ZE10, "Gillis, Mark" <[EMAIL PROTECTED]> > > wrote: > >> In case anyone?s interested, I raised this with IBM. Their response >> > was > that > >> testing NUCMTDSP wouldn?t work, the only way possible being to run the >> > > CMS > >> control blocks. Unfortunately, these control blocks have the note?This >> > > >> information is NOT intended to be used as Programming Interfaces of >> > z/VM? > >> ? which makes me a little uneasy about doing it this way. I guess it?s >> > > all > >> there is, though. >> > > I have some assembler code that can run with C or Pascal (called prior > to > entering the "real" module). I put in a WXTRN for CEESTART and VSPASCAL > > in order to figure out whether it is running in an LE environment or > not. > Could you put in a WXTRN for VMSTART? If the adcon is non-zero, then > VMSTART was linked. > > Alan Altmark > z/VM Development > IBM Endicott >
