Well, in the DLI interfaces the number of items passed is NOT fixed. You can pass one or more SSAs on a "get" call (and some others), and some calls do not require an SSA at all. Some don't even require an I-O area.
Frank ----- Original Message ----- > From: Bernd Oppolzer <[email protected]> > To: [email protected] > Cc: > Sent: Tuesday, April 10, 2012 4:48 PM > Subject: Re: PL/I with variable PLISTs (was: LE C calling HLASM) > > I would not blame PL/1 for this. > It is not OK IMHO to request the caller to set the > high order bit on the last parameter, when the number of the parameters > is fixed > (see also my GDDM example on the other post). This is not required by > any OS convention, > at least that's my understanding. > > Kind regards > > Bernd > > > > Am 11.04.2012 00:19, schrieb Frank Swarbrick: >> I don't know if this is relevant, but I was looking at the PL/I DL/I > (IMS) interface (PLITDLI) and noticed that they actually have to pass, as the > first parameter, a fullword containing the remaining number of items! Crazy! >> >> For example, in COBOL you say: >> >> call 'CBLTDLI' using ghnp, pcb-mask, i-o-area, ssa-1 ssa-2. >> >> In PL/I it looks like you'd do something like this: >> call PLITDLI (five, ghnp, pcb-mask, i-o-area, ssa-1 ssa-2); >> >> See here for more details: >> > http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=%2Fcom.ibm.ims11.doc.apg%2Fims_imsdbpliapp.htm >> >> I was pretty happy about what I learned about PL/I until I saw this. Yuck! >> >> Frank >> >> > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
