On Mon, 24 Jul 2006 10:28:46 -0400 "Thompson, Steve (SCI TW)" <[EMAIL PROTECTED]> wrote:
:>Could someone help me verify the rules for the TCBJSTCB pointer? :>What I am trying to do is get back to the main task TCB for the address :>space to use its TIOT. What environment? :>Now I know that the first 3 TCBs in the address space (RCT, Dump, and :>STC) all point to themselves when looking at their (respectively) :>TCBJSTCB fields. Yes, they are job step tasks. :>This led me to understand that if a TCB is attached with a KEY0 state, :>that the TCBJSTCB will point to "itself". And this idea was confirmed :>when looking at the z/OS 1.7 data areas where I found a comment that :>indicated that *any* TCB that was attached as KEY0 will have the :>TCBJSTCB pointing to "itself". That would be new, if true. ATTACH(X) option JSTCB=YES would control that. :>Ah, but now this is where the confusion comes in. How do I get to the :>true Job Step TCB to look at its TIOT? Depends on the environment. Usually ASXBITCB will be useful. :>Specifically, if I am trying to get to the "common" TIOT (shall we say, :>Job Step TIOT), I may not be able to depend on the TCBJSTCB pointing to :>the "true" Job Step TCB. Unless you are doing special stuff you can count on your task having the same TIOT. :>Please tell me I'm wrong. You are. :>If my assumption is correct, then the only way to get what I need is to :>determine the type of address space, and then do: What are you trying to do? Is this some kind of exit? -- Binyamin Dissen <[EMAIL PROTECTED]> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
