FYI. After investigation done by Red Hat, it turned out that mutexes
suffer from the same fundamental problem as semaphores (ie. are not
thread safe and not atomic). See comments 0002193 and 0002194 for a
concise explanation of the issue. They have requested a clarification in
POSIX from the Austin Group and, as a result, the POSIX standard has
been updated.
http://austingroupbugs.net/view.php?id=811
The funny part is: "Of course nobody notices the bug because it's a
race condition that gets hit once in an interval somewhere on the order
of cpu-years...".
Somehow we did noticed it (the corresponding semaphore bug) in EOS ;)
Cheers,
Lukasz
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