System.IO.File.Delete collisions? (iOS)

Unity Engine
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1

Hi all,

We’re investigating a crash on iOS where it seems that a file that is being deleted (temporary buffer) might not be deleted within the same frame as the request to delete it is being made; we get an exception thrown when we try to use StreamWriter (AppendText) with the same file. It’s hard to tell exactly if the re-use is attempted in the same frame as the delete but it shouldn’t be.

When we changed the code to generate temporary file names with a longer period the problem went away; i.e we’ve spaced out the distance between a delete and a re use.

Does anybody know if File.Delete could take longer to complete than a couple of frames? It’s a stab in the dark but this one is a bit puzzling…

2

No further developments but…I’ve added a NSFileManager isWritableFileAtPath check around it (since we’re compiling with Fast but No Exceptions I can’t use try/catch.)

3

Still not’n…now errors showing up with Append. I’ve decided to try this approach; iphone - append NSString to file atomically? - Stack Overflow