producer consumer queue

[Dllieu]

http://www.1024cores.net/home/lock-free-algorithms/queues/bounded-mpmc-queue
https://github.com/cameron314/concurrentqueue

[Dllieu]

https://github.com/CppCon/CppCon2016/blob/master/Presentations/Rainbow%20Six%20Siege%20-%20Quest%20for%20Performance/Rainbow%20Six%20Siege%20-%20Quest%20for%20Performance%20-%20Nicolas%20Fleury%20-%20CppCon%202016.pdf