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Re: Default Button heartBeat bug
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Re: Default Button heartBeat bug


  • Subject: Re: Default Button heartBeat bug
  • From: "John C. Randolph" <email@hidden>
  • Date: Fri, 7 Jan 2005 11:23:12 -0800


On Jan 7, 2005, at 11:19 AM, j o a r wrote:


On 2005-01-07, at 14.26, Thomas Davie wrote:


Hmm, no on needing a multi-CPU machine. I've seen both the crash with -[NSUIHeartBeat _heartBeatThread:] and the console message (not at the same time) on my single CPU machine.

I've only seen a backtrace with NSUIHeartBeat, though; I've never seen one with NSViewHierarchyLock.


The implication of that being that it's a different bug, try to isolate that one and file a new RadarWeb entry :)



Not necessarily a different problem (although it could of course be). This is a race condition between threads, and as such it's much easier to reproduce on multi-CPU machines. It might just be that I've never been patient enough to wait it out on a single-CPU machine.

It has been reported on single-processor machines, but it's much more rare. FWIW, I haven't seen Joar's test case crash on a single processor machine yet.


-jcr



John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html


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  • Follow-Ups:
    • Re: Default Button heartBeat bug
      • From: Darkshadow <email@hidden>
References: 
 >Default Button heartBeat bug (From: Dominic Feira <email@hidden>)
 >Re: Default Button heartBeat bug (From: j o a r <email@hidden>)
 >Re: Default Button heartBeat bug (From: Shawn Erickson <email@hidden>)
 >Re: Default Button heartBeat bug (From: mmalcolm crawford <email@hidden>)
 >Re: Default Button heartBeat bug (From: j o a r <email@hidden>)
 >Re: Default Button heartBeat bug (From: Darkshadow <email@hidden>)
 >Re: Default Button heartBeat bug (From: Thomas Davie <email@hidden>)
 >Re: Default Button heartBeat bug (From: j o a r <email@hidden>)

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