@John, thanks, exactly the *sort* of answer I was looking for. It was just a Friday question, as I said. No real problem here. I just have this "why? whatever for" thought every time I look at the WAIT documentation.
> the parent needs at least 2 worker products in order to do something else Or perhaps at least one "worker product" plus some necessary "output" resource. Although then "any 2 of n" would not solve the problem. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of John McKown Sent: Monday, June 20, 2016 7:05 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: WAIT >1 (Friday type question, a day late) On Sun, Jun 19, 2016 at 11:52 AM, Charles Mills <charl...@mcn.org> wrote: > Oh sure. The basic "wait for one of many." My code waits for an any > one of an operator command, a timer expiration, or "real work." > > My question was does anyone issue a wait with a completion count of > more than one? "Wake me when two of these five ECBs have been posted"? > > Charles > > That is a good question. I can think of a reason, as you said, to wait for "1 of n". And I can think of a reason to wait for "n of n". I've even thought of a reason to wait for what I'll call "1+1 of n" (i.e. what until one specific ECB is posted, plus one of "n" other ECBs). The closest that I can envision for "2 of n" might be if the "n" are "n" worker threads which produce "some output" and, for some reason that I can't envision, the parent needs at least 2 worker products in order to do something else. But that idea is so vague that it is basically useless. Hum, maybe a case of "efficiency" in the aforementioned scenario. Suppose that you need "n" worker threads to produce "product". These thread each take a relatively "large" amount of time. Your main thread does something with this "product", but it does it quickly. It would be more efficient to accumulate "m" (<n) units of "product" to process in a loop for each redispatch of the main thread. Well, a little more reasonable, but still not too specific. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
