[libc-commits] [libc] [libc] add a simple TTAS spin lock (PR #98846)

[Schrodinger ZHU Yifan via libc-commits]

SchrodingerZhu wrote:

@jhuber6 I think this technique is called CTR as in https://arxiv.org/pdf/2102.03863, section 2.1. But TTAS semantic should be more general. Frankly speaking, I am not sure how it performs on modern hardware regarding implement TTAS locks.

https://github.com/llvm/llvm-project/pull/98846