>From some experimentation it looks like that even in Session.terminate locks are automagically generated even without explicit lock/unlock.
Any thoughts? Matteo On Tue, Jul 10, 2012 at 9:33 AM, Cheong Hee (Gmail) <chn...@gmail.com>wrote: > ** > I think you are right or at least this is the impression I had the last > time on this subject. I plan to move from MultiEC locking manager to > ERXEC ec. As usual, I could be wrong.. > > > ----- Original Message ----- > *From:* Matteo Centro <woli...@matteocentro.it> > *To:* Paul Dunkler <paul.dunk...@xyrality.com> > *Cc:* webobjects-dev@lists.apple.com Dev > Apple<webobjects-dev@lists.apple.com+Dev+Apple>; Wonder > Project <wonder-d...@lists.sourceforge.net> > *Sent:* Monday, July 09, 2012 6:47 PM > *Subject:* Re: [Wonder-disc] ERXEC and locking > > Actually I noticed that removing all the locks (even the forgotten ones) > seems to have solved the problem... I had 100000 unique users on 22 > instances running for a day and no deadlocks. > > Any thoughts about stuff that is done in the Session.terminate? I need to > do some cleanup if the session terminates, do I get automatic lock unlock > in that scenario or the termination happens in a separate thread and so I > have to manually lock/unlock? > > Thanks, > > > Matteo > > On Mon, Jul 9, 2012 at 12:19 PM, Paul Dunkler > <paul.dunk...@xyrality.com>wrote: > >> I recently "Wonderized" a legacy WO application and I have a strange >> race condition that happens very rarely and only under extremely high load. >> Application extends ERXApplication, Session extends ERXSession and so on, >> I removed all "new EOEditingContext()" and replaced them with >> ERXEC.newEditingContext() >> but >> I forgot to remove some ec.lock() and ec.unlock() >> >> I am quite convinced that removing all locks and unlocks will bring me to >> a non deadlocking situation but I still want some reassurements >> I read a lot of stuff and I'm here to ask to you gurus a final word on >> the locking rule I inferred from what I read: >> >> If you always use ERXEC you can safely remove all lock and unlocks except >> for stuff that happen in background threads... >> >> >> Is it true? >> >> >> I think yes, its true. We are actually using Wonder Editing Contexts only >> and do not have any other locking stuff. Everything runs fine. >> >> >> What about stuff that happens in session.terminate()? I would say that it >> should have explicit lock/unlocks but any opinions are welcome. >> >> Thanks, >> >> >> Matteo >> >> ------------------------------------------------------------------------------ >> Live Security Virtual Conference >> Exclusive live event will cover all the ways today's security and >> threat landscape has changed and how IT managers can respond. Discussions >> will include endpoint security, mobile security and the latest in malware >> threats. >> http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/_______________________________________________ >> Wonder-disc mailing list >> wonder-d...@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/wonder-disc >> >> >> -- >> Mit freundlichen Grüßen >> >> Paul Dunkler >> >> >> >> >> >> ----------------------------------------------------- >> XYRALITY GmbH • Friedensallee 290 • 22763 Hamburg >> Paul Dunkler • Technical Director >> Mail: paul.dunk...@xyrality.com >> Tel: +49 (0) 40 35 73 001 41 >> Mobil: +49 (0) 151 252 228 42 >> Fax: +49 (0) 40 35 73 001 99 >> Web: http://www.xyrality.com/ >> Registergericht: Hamburg HRB 115332 >> Geschäftsführer: Sven Ossenbrüggen & Alexander Spohr >> ----------------------------------------------------- >> >> > ------------------------------ > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/chng34%40gmail.com > > This email sent to chn...@gmail.com > >
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