Re: [boost] [spinlock] Spin on volatile read, NUMA fairness?

[Niall Douglas]

I think the Intel paper was referring to MSVC only, which is an unusual compiler in that its atomics all turn into InterlockedXXX functions irrespective of what you ask for. In other words, all seq_cst.

Absolutely untrue for VC-ARM. Also untrue for VC 2015 x86/x64, where <atomic> avoids Interlocked machinery when an ordinary load/store with a compiler barrier will suffice due to the strength of the architecture's guarantees. (The versions are blurring together, so I forget when we made this change.) STL