On Mon, 5 Jul 2010 08:48:38 -0600, Robert Raicer wrote: > >You have it just about right. When the sole remaining RB for the TCB >issues SVC-3 (EXIT), End of Task processing begins. This causes RTM > Does an RB issue SVC-3, or is it the task the RB dispatches that issues SVC-3? Does the RB remain once it has caused the task to be dispatched? I would have exepected it would be removed from the queue; deleted.
Would it be clearer to say that "When a task issues SCV-3 and no undispatched RBs remain on its queue ..."? What happens if a task issues SVC-3 while further RBs remain queued? My uncertainty about the SVC number arose when I was unable to find "EXIT" in "z/OS V1R10.0 MVS Assembler Services Reference ABE-HSP". Is there no actual service with this name? >When the ATTACHed module is initially entered, GPR 14 contains the >address to which it is to branch upon its completion, i.e., this is >the "Return Address". While not part of the documented programming >interface, this address is generally the address of an SVC 3 >instruction contained in the CVT (field CVTEXIT). > Are you saying that it is unsupported for a module entered by ATTACH to exit via R14? Or merely that it is not guaranteed that a module can CLC 0(2,14),=x'0A03' to determine that it was entered by ATTACH? -- gil ---------------------------------------------------------------------- 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
