forked from OSchip/llvm-project
cb2d2ae56a
We need CLOCK_MONOTONIC equivalent implementation for z/OS within libc++. The default implementation is asserting. On z/OS the lack of 'clock_gettime()' and 'time_point()' force us to look for alternatives. The current proposal is to use `gettimeofday()` for CLOCK_MONOTONIC which is also used in CLOCK_REALTIME. This will allow us to skip the assertion with compromised CLOCK_MONOTONIC implementation which will not guarantee to never go back in time because it will use `gettimeofday()` but only when it's set. Is this a good compromise for platforms which does not support monotonic clock? Hopefully this will spark the discussion and agreement how to proceed in this situation. Reviewed By: #libc, ldionne, hubert.reinterpretcast Differential Revision: https://reviews.llvm.org/D93542 |
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