On Nov 29, 2015, at 7:17 PM, Stevet wrote:
This is why you have specialty routines that you load and if I
remember correctly, IDENTIFY.
What is being described is part of the joys of being an ISV.
Imagine, back in the day, of providing code that was sensitive to
JES2 releases and Maint changes. My headache w/ ACS/WYLBUR while
also handling JES3, RACF, ACF2, etc.
You do what your customers need.
Sent from iPhone - small keyboard fat fingers - expect spellinf
errots.
Then supply an object deck that has the "special" instructions with
instructions to relink the problem program. Put the burden on the
user. BTW he has not informed us what the timing difference is. I
submit that the most crucial missing part of this discussion is.
Ed
On Nov 29, 2015, at 7:22 PM, Ed Gould <[email protected]>
wrote:
Charles,
I have been watching this thread and if I am not mistaken you want
to know which instructions are available (or not) at execution time.
I am not knowledgeable of c/c++ but unless you compile the program
at run time (with the correct arch type) you will always get an
0C1 if you execute the instruction on a machine that is incapable
of executing that instruction. I would suggest that you compile at
the lowest level and therefore should run on all types of the
machine. If you are concerned about "efficiency" there is no real
answer and you are exercising a way to get a medical condition
(ulcer). Tell your boss to either ship the source and compile it
whenever the machine type changes (make the customer do it).
OR just ship at the lowest architected of the Z models or let the
customer do it.
We are probably talking about a few CPU seconds or there unless
this is a MAJOR usage animal. Then I would suggest let the
responsibility lie with the customer.
Ed
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