> On Jun 17, 2016, at 16:40, Christiaan Hofman <cmhof...@gmail.com> wrote:
>
> I can finally see the crasher myself now, as I have finally upgraded to
> 10.11. So this again shows this is at least partly an OS bug, as it seems o
> occur only in 10.9 and 10.11, and not in 10.10.
>
> I also tried my proposal to use (a finite number of) non-releasing
> controllers as the web view delegates. But unfortunately this did not fix the
> problem. So perhaps it’s not related to the web view delegate.
>
> One thing I noted is that the crash happens after a little while, and does
> not occur if the max number of web views is large enough for all web view
> icons. This makes me now suspect that the problem has to do with the
> notification. Also because in your tests the strange retainCount jumps happen
> around those notifications. So perhaps there’s something off with the timing
> of those notifications. Perhaps it has to do with the fact that several icons
> are notified at once, even though only one web view will be available, so
> that may perhaps get some run condition between the waiting icons?
>
> One thing that seems wrong to me in the code is the main thread check in
> -[FVWebViewIcon release]. Should that not be pthread_main_np() == 0 rather
> than != 0? Not that changing this fixes the crasher.
>
> Christiaan
>
I think I finally fixed the problem!
It looks like the web view is a complete red herring. The problem is with the
notification center. Apparently there is something fishy going on with how
NSNotification references the object. I have replaced the notification center
by a simply non-retaining array to hold the icons waiting for rendering. I’ve
seen no crashes since!
Christiaan
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