On Feb 1, 2009, at 8:37 PM, Michael Ash wrote:
Thanks to both you and Rob for repeating the experiment. Interesting that it's so variable. On my computer it would occasionally require several million to crash, but most of the time it explodes within the first few hundred thousand.
I've been testing your code too. The first time I ran it, it crashed after 1,150,000 operations had been added. But the second time, more than two hours and 40 million operations later, it was still running fine. I've had a couple more attempts where it went well over 1 million without problem.
I'm going to keep trying, but it looks very hard to reproduce on my system (MacBook Pro Core 2 Duo 2.33Ghz, Leopard 10.5.6).
Just for clarification, what kind of "explode" happens on your computer (and the other respondents, if they have that information)?
On my computer, the one time I saw it crash, it was an NSInvalidArgumentException, complaining that in "-[MyOperation start]" the "receiver has already started or finished". I'm wondering if this is the exception everyone sees, or if the actual exception varies from one execution of the program to the next.
If the problem is difficult to reproduce on some computers, knowing the exact failure could greatly help Apple track the problem down.
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