Walt,

My primary thought was IRREVX01, my fear was what LE enablement would do to the 
exit,performance, re-entrancy  etc. I wasn't sure. I know that ICHPWX11 has an 
assembler stub calling rexx, I saw that .. We are thinking about writing a 
ICHRCX01 exit., I wasn't sure if I should write in Assembler , my first choice 
or Metal C..  The exit being a possibility part of new product I really cant go 
into it much here. 

Our products primary use three exits, ICHPWX01, ICHRIX02 and IRREVX01 ..


Trust me I wont put something out without Beta testing, etc. I am extremely 
careful. I have been ask about C stuff by management for maintainability. So I 
have to formulate a answer based on facts and opinions I know and trust.


Regards,

Scott





From: Walt Farrell
Sent: ‎Monday‎, ‎April‎ ‎28‎, ‎2014 ‎1‎:‎50‎ ‎PM
To: IBM Mainframe Discussion List





You say "several" exits, which has me a bit concerned, Scott. Which exits, 
exactly?

IRREVX01 may well work work if coded in C, and even if coded LE-enabled. But 
for many other RACF exits I would be very surprised if they would work in C, 
unless it's Metal C. And for those other exits I would be flabbergasted if 
LE-enabled C would work.

Even for IRREVX01 I would be uncomfortable with the thought of LE-enabled C, 
given that it could (I think) have negative consequences when the RACF commands 
are run in the RACF subsystem STC, so I think Metal C would be better there.

I will admit, though, that I've never tried any flavor of C personally for 
system exits.

-- 
Walt

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