Edward Jaffe wrote:
Bob Rutledge wrote:
says that the 64-bit time returned by repeated STCKs are also
guaranteed to be unique.
Also true. The only problem with STCK is the chance that, on an
ultra-fast machine, it might have to delay execution to ensure the
uniqueness documented in POO.
It also serializes twice, presumably whether or not it has to delay execution.
STCKF was invented for programs that just
want to know what time it is and don't care whether the results of two
consecutive STCKF instructions on the same CP might be identical.
Victor wants to uniquely identify CICS transactions so STCKF is probably not the
right answer and the delay(s) from STCK are likely irrelevant.
Bob
----------------------------------------------------------------------
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
