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How about setting up a 60-second interval timer by calling the setitimer() function. Will that solve the problem?
--- Scott Klement http://www.scottklement.com On Thu, 3 Nov 2005, Jevgeni Astanovski wrote:
I've asked this question once last year and got some proposals. Letter below describes more or less these possibilities. There was also Simon Coulter's comment:Surely it would be better to start the program once and have it sleep for n seconds between processing. That would avoid the overhead of starting umpteen jobs as well as make it easier to locate problems.But the problem is (I understood it now :-(((), that most of these are not what I've been looking for.... Imagine you need to START a process every minute, that is ...... 7:00:00 7:01:00 7:02:00 7:03:00 ...... And the process itself can take from 1 second to say 50 seconds - unpredictable. Both methods (1) and (2) does not do the job at all - as obvious as it is. I need to guarantee, that the process is started with a fixed frequency, and the proposed guarantees, that system will rest guaranteed amount of time between process executions. The only method, that actually does the job is (3), when I have an upper level C(L) program, that submits my process every fixed period. But Simon says, that from the system point of view it is not very good. Are there any other possibilities, or number (3) is the only one? Jevgeni.-----Original Message----- From: Svensson, Joakim [mailto:joakim.svensson@xxxxxxxxxxxxx] Sent: Friday, December 17, 2004 9:54 AM To: C programming iSeries / AS400 Subject: RE: [C400-L] What is a technique to start a program periodically? Hmm, well, I actually did write a response but our web-mail client seems to have kept all the text... The text you see is added to all outgoing mail totally out of my control. Back to my answer: You have several options to accomplish what you need: 1. Use a simple delay in a loop in your program. C-pseudo code do { ...stuff... system("DLYJOB (60)"); } while (break_condition) 2. Use a time out on a data queue. This is nice since you can control the program termination externally, by sending something via the data queue and since it's consuming close to zero system resources. timeout = 60; do { ...stuff... ReceiveFromDataqueue (myqueue, mydata, timeout); } while (mydata <> "BREAK") 3. As suggested you can have another job submitting your program every 60 seconds, or you can do it from your program, but both options are inefficient from a system point of view. All these options would in practice require you to execute your program in a new job queue, or else your program would hog QBATCH all day long which normally is not accepted. Joakim ------------------------------------ Svensson, Joakim Capgemini, Sweden Certified Enterprise Architect / Principal Joakim.Svensson@xxxxxxxxxxxxx Sweden ------------------------------------ -----Original Message----- From: c400-l-bounces+joakim.svensson=capgemini.com@xxxxxxxxxxxx [mailto:c400-l-bounces+joakim.svensson=capgemini.com@xxxxxxxxxxxx] On Behalf Of Peter Grace Sent: den 16 december 2004 20:07 To: C programming iSeries / AS400 Subject: Re: [C400-L] What is a technique to start a program periodically? -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 It's a new kind of e-mail where only the person it's addressed to can actually see the message! OK, maybe not. But it makes you wonder! <puts on tinfoil hat> Pete Jevgeni Astanovski wrote: | Hm-m-m.... | Does it really contain anything confidential? /------------------------------------------------\ |Peter Grace Phone: 484-875-9462 |Technology Analyst Fax: 484-875-9461 |RealTime Technologies, Inc. |835 Springdale Drive, Suite 101 |Exton, PA 19341 \------------------------------------------------/ This message contains information that may be privileged or confidential and is the property of the Capgemini Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message. _______________________________________________ This is the C programming iSeries / AS400 (C400-L) mailing list To post a message email: C400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/c400-l or email: C400-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/c400-l.-- This is the C programming iSeries / AS400 (C400-L) mailing list To post a message email: C400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/c400-l or email: C400-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/c400-l.
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