other stuff
> Implementing a circular buffer with one reader and one writer is
> probably in the first assignment of any concurrent programming course.
No, it is the first assignment of any operating systems course.
It all works great until you add select() to the problem.
This race condition is documented as being unsolvable in the book
"Advanced Programming in the Unix Environment" by Richard Stevens.
Though it is getting obsolete, the book is still very good.
(it does not cover Linux, BSD 4.4, or anything else recent)
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