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Re: NSScroller revision?
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Re: NSScroller revision?


  • Subject: Re: NSScroller revision?
  • From: Kyle Sluder <email@hidden>
  • Date: Fri, 25 Apr 2014 12:32:28 -0700

On Fri, Apr 25, 2014, at 12:20 PM, edward taffel wrote:
> i just noticed & i’m not sure in which seed it occurred: NSScroller seems
> to have undergone some revision. i now get this message:
>
> CoreAnimation: warning, deleted thread with uncommitted CATransaction;
> created by:
> 0   QuartzCore                          0x00007fff96328ff6
> _ZN2CA11Transaction4pushEv + 312
> 1   QuartzCore                          0x00007fff96328b29
> _ZN2CA11Transaction15ensure_implicitEv + 273
> 2   QuartzCore                          0x00007fff963289c6
> _ZN2CA11Transaction9set_valueEj12_CAValueTypePKv + 40
> 3   QuartzCore                          0x00007fff9632895a
> +[CATransaction setDisableActions:] + 38
> 4   AppKit                              0x00007fff94005985
> -[NSScrollerImp _updateLayerGeometry] + 68
> 5   AppKit                              0x00007fff94004f52
> -[NSScroller(NSInternal2) _replaceScrollerImp] + 401
> 6   AppKit                              0x00007fff94164647 -[NSScroller
> initWithFrame:] + 391
> ...
>
> the message is logged about 10 seconds after launch, once for the
> vertical scroller only; the scroller looks & behaves as expected. both
> scrollers are programmatically added (not in ib).
>
> does anyone have any idea what the issue is?

Often times this happens if an instance of a layer-backed NSView (of
which NSScroll is an example) is deallocated on a background thread.

Ensure that the last reference to your views is always released from the
main thread.

--Kyle Sluder

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