Re: NSNotification and NSRunLoop

[Richard Frith-Macdonald]

On Wednesday, October 29, 2003, at 05:54 PM, Chris B. Vetter wrote:

> On Wed, 29 Oct 2003 06:18:51 +0000
> Richard Frith-Macdonald <richard@brainstorm.co.uk> wrote:
> > On Wednesday, October 29, 2003, at 01:29 AM, Yen-Ju Chen wrote:
> > >  Why does it happen ?
> > >  Do I have to use NSRunLoop in order to receive NSNotification in
> > >  the middle of while loop ?
> > Yes ... events  only arrive while a run loop is running ... so you
> > need to run the runloop within your while loop.
> [...]
>
> I was playing with sockets the other day and ran into a similar 
> problem,
> Yen-Ju was having (with respect to NSRunLoop and NSNotification).
>
> Basically I did the same as you suggested (put NSRunLoop inside a loop)
> and never received any notifications, until the while() finished. When 
> I
> put the while() in a separate method, added it to a timer and fired 
> that
> one off, it worked... Weird.

Do you have any example code I could try out?  I've certainly used that
sort of code successfully in the past ... but some particular set of 
circumstances
might be triggering a bug of some kind.

One thing I can think of is that notifications are actually only 
received by the
default run loop of the main thread (I don't know if this is Apple 
behavior too)
so running another loop will not enable notifications to be received.
I *think* this is correct ... but perhaps it's a bug to be fixed and 
the notification
reception should be automatically added to all run loops.