On Mon, 12 Nov 2018 18:13:30 +0000, Farley, Peter X23353 (peter.far...@broadridge.com) wrote about "Why are sophisticated system-level coding examples not available? [was: RE: Recommended method for accessing secondary access spaces]" (in <f6dfa267dd2a448b881a732dbbcc3...@clipswexmaa4.bsg.ad.adp.com>):
> Not jumping on Ed Jaffe or Peter Relson or any of the other thoughtful > and helpful responders in this email chain, but it still rankles me > that there are no good examples anywhere (not at IBM and not at CBT) > for programmers to review that show exactly how to set up and use "SRB > to the other address space and PC-ss back to the requesting address > space" or any similarly sophisticated system-level application coding > technique. > > Why is system-level application coding made an obscure mystery to which > only IBM and (some) ISV's have access? Good examples that show how to > "do the right thing" would avoid an awful lot of dangerous experimentation. > "Security through obscurity" is, I think all here would agree. NOT a good > thing. I can offer an opinion based on my years as a developer for various ISVs. Each ISV considers its more sophisticated code to be some kind of magic joojoo that it wants to keep private as a competitive advantage. The curious part is, most developers have worked for a variety of ISVs and have spread the magic as they went, so the slick code tended to be fairly similar in all the ISV companies. I think most of the low-level techniques were derived from code seen on the IBM-supplied microfiche (remember that?) that arrived with MVS installation media. It would benefit the mainframe industry if microfiche (or a more modern medium) were reinstated. There are no longer any other platform-level vendors in mainframes any more, so nobody is going to bootleg z/OS as their own operating system. -- Regards, Dave [RLU #314465] *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* david.w.n...@googlemail.com (David W Noon) *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
