Re: Delay when posting a notification to NSNotificationCentre
Re: Delay when posting a notification to NSNotificationCentre
- Subject: Re: Delay when posting a notification to NSNotificationCentre
- From: Chuck Hill <email@hidden>
- Date: Thu, 12 Mar 2009 11:43:41 -0700
On Mar 12, 2009, at 5:43 AM, Simon McLean wrote:
Thanks for the tips chaps. I've popped everything into an executor
pool now and the notifications now behave how as i want them to. But
now i've run back into an issue (bug?) with
ERXFetchSpecificationBatchIterator which throws a wobbly when running
in a thread :-(
http://lists.apple.com/archives/webobjects-dev/2009/Mar/msg00029.html
Can you build Wonder? Try changing the constructor from
if (qualifier != null) {
this
.fetchSpecification
.setQualifier(entity.schemaBasedQualifier(qualifier));
}
to
ec.rootObjectStore().lock();
try {
if (qualifier != null) {
this
.fetchSpecification
.setQualifier(entity.schemaBasedQualifier(qualifier));
}
} finally {
ec.rootObjectStore().unlock();
}
Chuck
2009/3/10 Mike Schrag <email@hidden>
Is that normal behavior ? The java docs don't talk about the
sequence of events, but I presumed that the notifier would just
makes it's notification then get on with whatever it has to do
next and not care about what the listeners are doing, or how long
it takes them to do it.
this is normal ... receipt of notifications happens in-thread with
the event dispatch, which is actually required in some cases, since
WO/EOF use notifications in several cases for synchronous events
(when a new eoadaptor channel is needed, for instance).
Do i just need to stick the listeners job into a thread to get it
to run in the background ?
I would personally recommend using a Java 1.5 ExecutorPool rather
than doing anything with your own threads (you don't want to kill
your app because you're spawning tons of threads by accident).
ms
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--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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