Problem
Implement a thread-safe circular buffer (FIFO queue) in C++ without using the Standard Template Library (STL).
Practicing as: Embedded Engineer interview at Magic AlHi, I'll play your Magic Al interviewer for the Embedded Engineer role. Candidates describe these interviews as often stressful and moderately difficult, so expect me to be direct and to the point. Take your time with the question above and answer like we're in the room.
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