[Qt-interest] Monotonic clock in Qt?

Thiago Macieira thiago at kde.org
Tue May 4 23:53:18 CEST 2010


Em Terça-feira 4. Maio 2010, às 21.46.22, Nikos Chantziaras escreveu:
> I need to do time measurements, and I use QTime for this.
> Unfortunately, QTime is not "solid" for this.  If the system clock gets
> changed, I'm screwed.
> 
> Qt 4.7 introduces QElapsedTimer for this.  But I can't use Qt 4.7; it
> will be a while (probably in range of *years*) until Linux distros ship
> Qt 4.7 by default, especially Debian-based ones (which is still using Qt
> 4.4).
> 
> Is there any solution that will work with Qt versions 4.6 and lower?
> I'd hate to do kernel system calls, since there's no way to probe for
> that in qmake (I'd have to switch to GNU Autoconf).

Do system calls or use QElapsedTimer.

And besides Debian, most distros will be shipping Qt 4.7 by the end of the 
year.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
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