On Fri, 3 Feb 2017 14:42:24 -0500, Farley, Peter x23353 wrote: > >OTOH you don't have to wait for completion of a READ or a WRITE. You can >issue a WRITE at the end of a processing loop and then go back to process the >next record while the WRITE completes, and only CHECK the WRITE when you are >ready to issue the next WRITE. > >Similarly for READ's, issue another READ right after the start of processing >for the prior record, then CHECK the second READ when you come back to the top >of the processing loop. > Does QSAM not overlap I/O with processing? I had expected that on the first GET QSAM would issue BUFNO READs; CHECK the first and return the record for processing while the remaining BUFNO-1 READs proceeded.
Another concern if you need to support BPAM is that BPAM and BSAM can share more code than BPAM and QSAM. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
