Thanks, Rob, Tom. Yes, Key 0 is dangerous, but documented as a requirement (for LINKAGE=BRANCH anyway). I was unaware of IEAMSXMP (and TCBTOKEN, which extracts the target program's TTOKEN). So I'm coding for those now. BTW, the standard from of POST supports register notation and RX-type. Rx does a LA - ST into the POST's parameter list, which means it's the address of the ASCB, not the ASCB itself. I'll try L Rx,ASCB and POST . . . ASCB=(Rx) and test that. Nonetheless, avoiding Key 0 is better. I'll reply later with results. Thanks again! ________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Rob Scott <00000618c90e6fdf-dmarc-requ...@listserv.ua.edu> Sent: Wednesday, September 4, 2024 12:54 PM To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU> Subject: Re: POSTing a WAIT in another Address Space; POST ASCB= parameter; S602 Abend
This Message Is From an External Sender This message came from outside your organization. I agree with Tom - naked XM POST in Key0 makes my eye twitch nervously. I am not in the office, so cannot check myself, but take a look at the expansion in the listing to see how the ASCB keyword is treated. Maybe try loading the ASCBtokn into a reg and then code ASCB=(Rn)? Rob Scott Rocket Software Get Outlook for Android<https://urldefense.com/v3/__https://aka.ms/AAb9ysg__;!!HaceldhrWm2T3s6H!0aZilwOuWHoDK8U7N4PcPjBFv1Dv8XdQ29A1om6NkVlX_QLz44-EwvKvETarExhpQe7-ECim0dZ3kIkVEyRTWL1e52kgDEUp656JYz2L6Le98g$> ________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Tom Harper <000005bfa0e23abd-dmarc-requ...@listserv.ua.edu> Sent: Wednesday, September 4, 2024 4:05:03 PM To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU> Subject: Re: POSTing a WAIT in another Address Space; POST ASCB= parameter; S602 Abend EXTERNAL EMAIL Richard, Have you considered using IEAMSXMP? Much safer. Tom Harper Phoenix Software International Sent from my iPhone > On Sep 4, 2024, at 10:36 AM, Richard Zierdt > <richard.zie...@freschesolutions.com> wrote: > > Trying to POST a WAIT ECB in a different address space. I'm getting a 602 > abend: "The target address space control block (ASCB) is incorrect." > > Lots of doc exists about cross memory communication but not finding much > about the POST macro using its ASCB parameter (other than IBM authorized > services). If something else is available, I'm very happy to RTFM. Here's the > scenario: > > 1) Started task A creates a name-token pair containing its ASCB and ECB > addresses (IEANTCR data sharing) > 2) Started task A then WAITs on the ECB > 3) Job B is started and retrieves the name-token pair (IEANTRT) > 4) Job B MODESETs to supervisor, key zero > 5) Job B issues a POST: > POST ECBtokn, ECB address from Token (Name-Token pair) + > ASCB=ASCBtokn, ASCB from Token (Name-Token pair) + > ERRET=PostErrR, + > LINKAGE=BRANCH, + > ECBKEY=0 > ASCBtokn DS A ASCB of started task address space > ECBtokn DS A address of ECB in started task > > 6) Job B abends w/602: > "The target address space control block (ASCB) is incorrect." > LINKAGE=SVC and LINKAGE=SYSTEM were tried and returned the same abend. > Also, the List and Execute macro forms of POST were tried with the same 602 > result. (List / Execute does an SVC call) > > PSW AT TIME OF ERROR 040C1000 813CF198 ILC 2 INTC 0D > NO ACTIVE MODULE FOUND > NAME=UNKNOWN > DATA AT PSW 013CF192 - 00181610 0A0D96A0 20105860 > AR/GR 0: 008FEA64/84000000 1: 00000000/84602000 > 2: 00000000/00000000 3: 00000000/008ECD64 > 4: 00000000/008ECD40 5: 00000000/201004E4 > 6: 00000000/008DBFC8 7: 00000000/00FA7300 > 8: 00000000/013CF5E0 9: 00000000/A0100000 -> Program B > A: 00000000/80000000 B: 00000000/A010041C -> ECB of A > C: 00000000/201002A0 D: 00000000/20100418 -> ASCB of A > E: 00000000/A0100226 F: 00000000/00000000 > > ASCBtokn contains x'00FA7000' > ECBtokn contains x'20100F20' (address of the ECB in the started task) > These values are correct; the name-token pair communication works. > Started task and job are both AMODE 31 RMODE ANY. System is z/OS 02.05. > > Sometimes, IBM macro parameters want the address of the address of. > So, ASCB==A(ASCBTokn) was also tried with the same 602 abend result. > > Salient WAIT code in started task A: > Wait ECB=ECBWTPT, Wait for another address space to + > LINKAGE=SYSTEM POST this ECB > ECBWTPT DC F'0' ECB for Wait-Post > > Thoughts on what's not working? > A working example of POST macro w/ASCB parameter would be appreciated. Or CBT > tape, etc. > Thanks > Richard Zierdt > > Confidentiality Warning/Avertissement de confidentialité: > > This message is intended only for the named recipients. This message may > contain information that is privileged or confidential. If you are not the > named recipient, its employee or its agent, please notify us immediately and > permanently destroy this message and any copies you may have. Ce message est > destiné uniquement aux destinataires dûment nommés. Il peut contenir de > l'information privilégiée ou confidentielle. 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