On Wed, 2012-06-27 at 09:29 +0200, Michel Dänzer wrote:
> On Mit, 2012-06-27 at 03:49 +0200, Marek Olšák wrote:
> >
> > +GLuint64
> > +_mesa_get_cpu_timestamp(void)
> > +{
> > +#ifndef _WIN32
> > + struct timeval tv;
> > +
> > + gettimeofday(&tv, 0);
> > + return (GLuint64)tv.tv_sec * 1000000000ull + (GLuint64)tv.tv_usec *
> > 1000;
>
> As in a recent discussion about DRM vblank counters, it may be better to
> use clock_gettime(CLOCK_MONOTONIC, ...) when possible, as gettimeofday()
> can move backwards.And if you do so, since it looks like you're working in milliseconds, please steal xserver's GetTimeInMillis() for it: http://cgit.freedesktop.org/xorg/xserver/tree/os/utils.c#n409 http://cgit.freedesktop.org/xorg/xserver/commit/os/utils.c?id=44adb31bfece29260a9bbd9075c9212ebf00d24d - ajax
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