Thanks everyone!

On Sun, Aug 4, 2019 at 6:55 AM Peter Relson <rel...@us.ibm.com> wrote:

> <snip>
> what about the normal completion reason code (R0)?
> </snip>
> "Normal completion reason code" is not a concept supported by z/OS. Of
> course there is "value in R0 upon normal completion" but that is not
> surfaced.
>
> The TCB/STCB has the information that is available. Since you attached
> with ECB the TCB/STCB still remain, until you DETACH.
> STCBCMP/STCBCMPC is the best field for the return code (whether normal or
> abnormal completion).
> TCBARC has the abend reason code when bit TCBRV316 is on (looks like no
> one ever noticed the need to provide a suitable name for that bit, since
> it is never set directly in the code -- the abend macro ends up setting
> the bit into the high byte of the abend code). This is defined only for an
> abend event. I don't think the RB chain is intact at the time you are
> looking, so I don't think you can find the regs from
> time-of-normal-completion unless they're in the TCBGRSx fields (I did not
> check, but that seems very unlikely).  It appears that TCBARC will have
> the value from the abend's R15 whether or not REASON was specified, but
> TCBRV316 will be off if REASON was not specified.
>
> <snip>
> At ABEND, R15 contains the REASON.
> </snip>
> To be picky, that is true only when the ABEND was issued with the REASON
> keyword. Otherwise, R15 contains a value that might or might not be
> considered a reason by the ABEND invoker.
>
> <snip>
> you can check the ABTERM flag in the subtask's TCB.
> </snip>
> The intended way to tell is now (and has been for quite a while)
> TcbEndingAbnormally (see the comments for STCBCMP).
>
>
> Peter Relson
> z/OS Core Technology Design
>
>
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