Is there any chance that the Monitor Call interface in z/OS will be documented and GUPI in z/OS V2.1? If not, then when (approximately)?
Similar questions: Will the TRAP2/4 hardware mechanism have a documented and GUPI interface in z/OS V2.1 or subsequent? If not, then when (approximately)? Peter -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jim Mulder Sent: Thursday, May 02, 2013 6:17 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: GTF IHL007I Terminating on Error > TMON/MVS (possibly under a newer name than when I developed this > part of it in 1987) sets itself up as an application using the > Monitor Call Trace Facility when and only when a short-duration I/O > trace is requested by a TMON/MVS user . It removes all its Monitor > Call control blocks when the trace ends. Unless that code has been > modified since I last worked with it 20 years ago. That's good to know. The Monitor Call interface in z/OS has never been externally documented (to my knowledge), and the internal macro for invoking it is PL/S(AS)(X) - only. Althought it appeared that the ancients (before my time) who orginally design this interface were intending to allow multiple concurrent appplications, it looks like at some they gave up on getting that working, and restricted it to one application (GTF) at a time. But, it was GTF initialization that enforced the restriction, not the Monitor Call interface code. So I don't know what would happen if this TMON function was active at the same time as GTF. In z/OS 1.6, there was a line item to remove this restriction, to allow multiple concurrent GTFs. Which eventually (after a number of PTFs) mostly seems to work. There were still some remaining issues relating to GTRACE TEST, and GTFTRACE under IPCS, when multiple GTFs are active, that I am working on fixing in z/OS 2.1 Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY -- This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
