Re: Recent drawing optimizations

[Richard Frith-Macdonald]

On Tuesday, April 1, 2003, at 03:31  pm, Ludovic Marcotte wrote:
> The stack trace Benhur posted shows where the crash is initiated. The
> subthread in GNUMail post a distributed notification to update the 
> status
> label in the MailWindow. The MailWindowController adds itself as an
> observer in the main thread for those distributed notifications
> (GNUMailStatusLabelMessage). Upon reception of distributed 
> notifications,
> this will call, in the main thread, MailWindowController:
> -updateStatusLabelWithMessage:.
>
> This used to work perfectly for months. I haven't changed anything 
> lately
> related to that.

On 21st Feb I modified/fixed NSDistributedNotificationCenter.m so that
notifications could arrive in any thread.  Before that, notifications 
would
only ever arrive in the thread which made the initial connection to the
distributed notification server (I considered this a minor bug).

I don't *think* you are supposed to make assumptions about which thread
a notification will arrive in ... but I'm not sure.

Anyway, this would explain the problem ... but the obvious question 
arising
is what the 'correct' thread behavior is for notification handling, and 
hence
whether this is a base library bug or an application bug.