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Acquire and release fences, in my opinion, are rather misunderstood on the web right now. That’s too bad, because the C++11 Standards Committee did a great job specifying the meaning of these memory fences. They enable robust algorithms which scale well across multiple cores, and map nicely onto today’s most common CPU architectures. First things first: Acquire and release fences are considered low-level lock-free operations. If you stick with higher-level, sequentially consistent atomic types, ...