On Jun 25, 2016, at 01:40 , Rick Mann <rm...@latencyzero.com> wrote:
>
> It seems that they might not be, but I can't find documentation either way.
What do you mean by “access”? Are you referring to their internal state, or
their relationship to the file system?
NSFileWrapper is *not* listed as thread-safe:
https://developer.apple.com/library/prerelease/content/documentation/Cocoa/Conceptual/Multithreading/ThreadSafetySummary/ThreadSafetySummary.html
so I’d assume it comes under the general rubric of “mutable objects”, since the
properties that hold file data can change. It’s even possible (though I don’t
recall offhand any evidence that makes this a plausible claim) that they access
file system information lazily, so even reading properties that don’t change
may mutate the internal state.
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