On 2/27/2023 2:07 AM, Rob Scott wrote:
As others might have suggested, if you are even semi-serious about writing authorized code then I think it would be worth your time talking to Cole Software about getting z/XDC.
We are happy z/XDC users, but we also rely heavily on the z/VM TRACE command as mentioned by Jim Mulder.
z/VM's TRACE can be used interactively to debug literally anything -- even an interrupt handler or IOS exit. If circumstances warrant, we will let the TRACE run and SPOOL its output to z/OS (via NJE from RSCS) where we have a REXX exec that superimposes its information on assembly listings.
The result displayed by that REXX are 1) an annotated instruction-by-instruction trace and 2) full source program listing showing how many times each statement was executed.
We also use SLIP IF tracing when it makes sense to do so and superimpose that information on assembly listings in the same manner.
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