[Development] Mutex future directions

[Thiago Macieira]

On quarta-feira, 23 de maio de 2012 04.54.11, bradley.hughes at nokia.com wrote:
> On May 22, 2012, at 11:01 AM, ext Thiago Macieira wrote:
> > And I don't think they very much liked the idea of spinning while trying
> > to
> > acquire a lock (consumes power)... at least we have a call to
> > QThread::yieldCurrentThread(), though it would be interesting to see what
> > happens if we replace it with a PAUSE instruction.
> 
> Have you seen the spin code in 4.8? It does use
> QThread::yieldCurrentThread(). ;)

Indeed it does. I'm saying that it would be interesting to check what happens 
if we replace it with a simple PAUSE instruction. We might be able to achieve 
the same result with a much smaller overhead.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
     Intel Sweden AB - Registration Number: 556189-6027
     Knarrarnäsgatan 15, 164 40 Kista, Stockholm, Sweden
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