[Development] QVariant performance

Thiago Macieira thiago.macieira at intel.com
Mon May 16 22:31:59 CEST 2016

On segunda-feira, 16 de maio de 2016 18:06:27 PDT Sean Harmer wrote:
> > Uncontended locks in Qt are extremely cheap.
> They're better now than they were since Olivier rewrote QReadWriteLock 
> recently.

I have a mind to see if a solution inspired by the WTF::Lock solution (see
https://webkit.org/blog/6161/locking-in-webkit/ ) to see if QWaitCondition 
performance would improve and if we could get rid of the ugly freelist backing 
QMutex on non-futex platforms.

But if I can't get benefit for QWaitCondition, then I won't bother. Platforms 
without futex will suffer and people should just get a better OS instead (like 
Linux or Windows 8).

Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center

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