[libcxx-commits] [PATCH] D93542: [SystemZ][ZOS] Provide CLOCK_MONOTONIC alternative

[Marshall Clow via Phabricator via libcxx-commits]

mclow.lists added a comment.

Starting in C++11, the standard library requires a monotonic clock.

There was a discussion about this at the time in the standards committee, with the question asked:
"You realize that you're requiring systems to have a monotonic clock, right"?
and it was answered: "Yes, we realize that and we're fine with that"

That being said, Libc++ has a mode which does not require a monotonic clock. 
The configuration is guarded by `_LIBCPP_HAS_NO_THREADS`


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  https://reviews.llvm.org/D93542/new/

https://reviews.llvm.org/D93542