Re: Core Animation Deadlock
Re: Core Animation Deadlock
- Subject: Re: Core Animation Deadlock
- From: Colin Cornaby <email@hidden>
- Date: Thu, 24 Apr 2008 23:11:32 -0700
Enabled NSZombie and friends didn't seem to fix the issue (or log
anything.)
This isn't going to be too easy to track down. Once I figure out what
series of events is triggering it I will try to put together a test
case.
On Apr 24, 2008, at 9:14 PM, John Harper wrote:
On Apr 24, 2008, at 7:38 PM, Colin Cornaby wrote:
It looks like NSUIHeartBeat could be attempting to lock something.
Although I could be wrong, it may not be related.
The render thread got stuck while depth sorting:
Thread 11 (process 13823 thread 0x8803):
#0 0x90a27d9c in CARenderLayerDepthSortSublayers ()
#1 0x90a27611 in prepare_layer0 ()
#2 0x90a27597 in prepare_layer0 ()
#3 0x90a27597 in prepare_layer0 ()
#4 0x90a26dd4 in CARenderUpdateAddContext ()
#5 0x90a25f72 in view_draw ()
#6 0x90a34f60 in view_display_link ()
#7 0x90a26936 in link_callback ()
#8 0x94cc1015 in CVDisplayLink::performIO ()
#9 0x94cc1641 in CVDisplayLink::runIOThread ()
#10 0x958e06f5 in _pthread_start ()
#11 0x958e05b2 in thread_start ()
this is done while holding the lock the main thread is trying to
take. I can't think of any way you could cause this other than heap
corruption, or maybe over-releasing objects, so it could be a CA
bug. I would try running with NSZombies enabled first; if you don't
see anything wrong that way, file a bug report (with a test case
showing the hang if possible, otherwise there's probably no way we
can debug it…)
John
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