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Re: CA_DEBUG_TRANSACTIONS=1
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Re: CA_DEBUG_TRANSACTIONS=1


  • Subject: Re: CA_DEBUG_TRANSACTIONS=1
  • From: Kyle Sluder <email@hidden>
  • Date: Wed, 05 Sep 2012 16:13:32 -0700

On Sep 5, 2012, at 4:12 PM, John MacMullin wrote:

> Ok, I went to the scheme in Xcode and added the variable.  Running again produced the following backtrace.
>
> 0   QuartzCore                          0x00007fff8a736b95 _ZN2CA11Transaction4pushEv + 219
> 1   QuartzCore                          0x00007fff8a73676d _ZN2CA11Transaction15ensure_implicitEv + 273
> 2   QuartzCore                          0x00007fff8a73660a _ZN2CA11Transaction9set_valueEj12_CAValueTypePKv + 40
> 3   QuartzCore                          0x00007fff8a73659e +[CATransaction setDisableActions:] + 38
> 4   AppKit                              0x00007fff8e3ef8ae -[NSScrollerImp _updateLayerGeometry] + 67
> 5   AppKit                              0x00007fff8e3eee8d -[NSScroller(NSInternal2) _replaceScrollerImp] + 368
> 6   AppKit                              0x00007fff8e486ff8 -[NSScroller initWithCoder:] + 305
> 7   Foundation                          0x00007fff8b763c39 _decodeObjectBinary + 2741
> 8   Foundation                          0x00007fff8b764a16 -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1189
> 9   Foundation                          0x00007fff8b764f88 -[NSArray(NSArray) initWithCoder:] + 538
> 10  Foundation                          0x00007fff8b763c39 _decodeObjectBinary + 2741
> 11  Foundation                          0x00007fff8b762fe4 _decodeObject + 226
> 12  AppKit                              0x00007fff8e309061 -[NSView initWithCoder:] + 976
> 13  AppKit                              0x00007fff8e484597 -[NSScrollView initWithCoder:] + 335
> 14  Foundation                          0x00007fff8b763c39 _decodeObjectBinary + 2741
> 15  Foundation                          0x00007fff8b762fe4 _decodeObject + 226
>
> Is is possible to attach the debugger to this so that I can see the problem in my code?

You should already be running in the debugger.

Are you perhaps decoding a nib on a background thread?

>
> Or can/should this be resolved with Atos?
>
> And back to the beginning, what is an uncommitted CATransaction?

Re-read the Core Animation Programming Guide. Core Animation uses a per-thread transaction model.

--Kyle Sluder
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References: 
 >CA_DEBUG_TRANSACTIONS=1 (From: John MacMullin <email@hidden>)
 >Re: CA_DEBUG_TRANSACTIONS=1 (From: Kyle Sluder <email@hidden>)
 >Re: CA_DEBUG_TRANSACTIONS=1 (From: John MacMullin <email@hidden>)

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