Re: Default Button heartBeat bug
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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