On 16 Jul 2011, at 11:40 AM, Adam Gerson wrote:
> I am having a strange issue with an app I am working on. I get a
> pinwheel of death. Its not consistently reproducible, but does happen
> sometimes. When I pause in the debugger it breaks into assembly code
> so I am not sure how to trace it. Where can I look next?
Your main thread is hung on a semaphore in a window-resize view animation. Some
other thread must be holding the semaphore.
Here is the first place I'd look: AppKit (and therefore essentially all of your
human-interface tasks) is not thread-safe. Have you set up any threads? Are you
doing any drawing, window operations, etc., from a background thread?
— F
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