[PATCH v2] tests: posix: use cpu clock for sleep

[Adhemerval Zanella Netto]

On 18/02/26 12:55, DJ Delorie wrote:
> Yury Khrustalev <yury.khrustalev@arm.com> writes:
>> The problem is that it doesn't to nothing exactly: it advances "time" by
>> whatever delta we're waiting for but does so instantly so the current
>> thread continues but its perception of the result of time() has changed
>> in a "correct" way.
> 
> Ok, that's evil, as it means program wall time is disconnected from real
> wall time.  Does usleep() do that?  If it does, I don't see any way
> around it besides your original patch.  Or declare such emulations
> broken and move forward ;-)
> 

I don't think a busy-wait would be a problem for this test, we already have
some similar tests for clock checks and 1s walltime should be ok.  DJ, do 
think it should be a block for this fix?