Creating a circular log for app

[Apocryphon]

I know how to redirect output from NSLog into a file, so now I'm trying to figure out how to write to that file while it is below a certain size, like say 100 KB. Once the file gets to be >100k, it is deleted and a new file is created in its place. I tried doing this:

while ([fileAttributes fileSize] < '10')
{
freopen(filepath, "a+", stderr);
}

But all it does is basically cause the app to freeze- it become stuck in this loop, and does not load anything. Does anyone have any suggestions as to how I should do this? Do I need to use threading?

[dljeffery]

Check it only when you need to write to it.

But what you are describing is not what I'd call a circular log. My definition of a circular log is one that gets up to a certain max size and then always stays there, removing the oldest entry (or possibly more, depending on how much space is needed) each time a new entry is written.

[Apocryphon]

Hm, that makes sense. My concern is how to check if the log gets larger than the file size limit while it is being written.