Prototype changes to use semaphore signalling for Unix #126
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Very much in the quick-prototype phase. Demonstrate that the CTRL-C logic can be alternatively implemented using a unnamed POSIX semaphore to signal between signal-handler and blocking thread.
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PLEASE DON'T MERGE!
Code is very much in the quick-prototype phase and very much not ready to be merged. Code is posted to demonstrate that the CTRL-C logic can be implemented using an unnamed POSIX semaphore to signal between signal-handler and blocking thread on unix rather than a pipe.
I've started a thread with the background on this here.