[vtkusers] Support for Windows XP and 32-bit PPC MAC OS

[Sujin Philip]

Hi Sean,

That is correct. According to Apple's documentation, 64-bit atomic math is
not available on 32 bit ppc machines. For now, I am using try_compiles to
determine what operations are available on a platform and reverting to
mutexes for missing atomic operations. I was worried that the extra
try-compiles will slow the configuration process unnecessarily. I am
leaving them in for now. We can remove them when we no longer care about
these platforms in the future.

Thanks
Sujin


On Fri, Apr 24, 2015 at 11:26 AM, Sean McBride <sean at rogue-research.com>
wrote:

> On Thu, 23 Apr 2015 18:00:37 -0400, Sujin Philip said:
>
> >I am working on vtkAtomicInt. Some of the features I need are not
> supported
> >on older platforms. I wanted to know if any users still use/care about the
> >following platforms: Windows XP or OS X for 32 bit PowerPC platform. We
> can
> >implement a fall back to use mutexes on these platforms but I am wondering
> >if it is worth the effort.
>
> My Rogue3 "Mac10.5-gcc-dbg-ppc-shared" dashboard is 32 bit Power PC.  But
> I don't much care about 32 PPC anymore personally.  I could switch the
> dashboard to 64 bit.
>
> What are you missing on 32 bit PPC?  64 bit atomic math?
>
> Cheers,
>
> --
> ____________________________________________________________
> Sean McBride, B. Eng                 sean at rogue-research.com
> Rogue Research                        www.rogue-research.com
> Mac Software Developer              Montréal, Québec, Canada
>
>
>
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