It would not be difficult to use the API to bring in stream I/O under TSO, but supporting PAM and SAM is another matter.
Concurrency is another reason for porting oorexx. As for z/VM, it's not your father's CMS. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Paul Gilmartin [0000000433f07816-dmarc-requ...@listserv.ua.edu] Sent: Monday, September 20, 2021 10:48 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: The Business Case for Pipes in the z/OS Base (was: Re: REXX - Interpret or Value - Which is better?) On Mon, 20 Sep 2021 14:20:04 +0000, Seymour J Metz wrote: >If portability is an issue then we need ANSI stream I/O in all REXX >environments. If we had that we wouldn't need EXECIO for new code. > It's ironic. The z/OS Rexx interpreter supports ANSI stream, but only under OMVS. I wonder whether the API could start Rexx with the needed function package in other environments. And only for UNIX files, not Classic. The z/OS Rexx compiler appears to support Stream I/O, but not for UNIX files. Conway's Law. An OMVS developer pleaded for directing message and TRACE output to stderr (the Regina default) rather than stdout. The Rexx designers rebuffed that. Even though the Rexx programming interface provides distinct calls for those functions. I've been RTFM. It appears that the "other side" of DDNAME is SUBSYS=PIPE. Would that work even in a single job step, with use of alternate DDNAMES as necessary? And concurrency. ADDRESS ATTCHMVS is a deception. It always WAITs for subtask completion rather than allowing it to run in the background. Concurrency would be enormously difficult in CMS; relatively easy in z/OS. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
