On Jun 14, 2008, at 7:19 PM, David wrote:
I am using NSMutableArrays to hold the nodes in the tree. One thread is adding child nodes while the main thread maybe accessing the arrays through the data source. I find it hard to imagine that NSMutableArray could becausing the problem.
Neither NSOutlineView nor NSMutableArray are thread safe.Unless the documentation explicitly claims thread safety, assume the class is not thread safe. As well, no amount of locking will make a non-thread-safe object thread-safe unless you absolutely positively know that only your code (and only your code protected by the locks) contain the only reference to said object.
Regardless, in this case, NSMutableArray (along with the rest of the mutable collection classes) are explicitly documented as *not* being thread safe.
b.bum
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