Re: [Qemu-devel] [PATCH v3 01/10] Introduce qemu_cond_timedwait for POSIX

[malc]

On Thu, 5 Apr 2012, Paolo Bonzini wrote:

> Il 05/04/2012 14:53, malc ha scritto:
> > On Thu, 5 Apr 2012, Paolo Bonzini wrote:
> > 
> >> Il 05/04/2012 14:30, malc ha scritto:
> >>>>> Would save that "* 1000". I just wondered why we do not use it elsewhere
> >>>>> in QEMU and was reluctant to risk some BSD breakage.
> >>>>>
> >>> It's probably worth mentioning that using anything other than 
> >>> clock_gettime and CLOCK_MONOTONING (as well as setting proper pthread
> >>> clock attr on the condition variable) is prone to the surprises (such
> >>> as NTP corrections and daylight saving changes).
> >>
> >> I was about to suggest the same, but how widespread is support for
> >> pthread_condattr_setclock?
> > 
> > If it's not all is lost anyway.
> 
> Only once every year. :)

DST changes happen twice if i'm not mistaken, NTP is at liberty to change
things more than once at any rate.

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