[vtkusers] problem with POSIX threads

[Song Li]

Thanks for information!
the problem is I only can find vtkMultiThreader.cxx under "common", there are many "#ifdef
....." there, so what you suggest is use #defines ..... in my code or directly in VTK's source
code ?? Thanks a lot!



Praveen Bhaniramka wrote:

> Hi Berk and Song,
>
> The reason for these problems is probably that VTK uses sproc for the
> multi-threading (see common/vtkMultiThreading.cxx) on SGIs. As far as I
> know, on IRIX, pthreads are implemented using sproc in such a way that
> they do not work with sprocs properly. So if your application uses
> pthreads, you should disable the use of sproc and use pthreads instead.
>
> I haven't looked at the vtkMultiThreading source much, but it seems that
> there are #defines for VTK_USE_SPROC and VTK_USE_PTHREADS which you could
> use to make the appropriate changes.
>
> HTH,
> Praveen
>
> On Mon, 4 Feb 2002, Berk Geveci wrote:
>
> > Even with Irix 6.5, there have been issues with pthreads.
> > Random crashes and such. Whenever we compile on SGIs, we
> > disable pthread support.
> >
> > -Berk
> >
> > >From: Song Li <lisong at vrac.iastate.edu>
> > >Reply-To: lisong at vrac.iastate.edu
> > >To: vtkusers at public.kitware.com
> > >Subject: [vtkusers] problem with POSIX threads
> > >Date: Mon, 04 Feb 2002 15:14:34 -0600
> > >
> > >Hi, gurus,
> > >    my program use VTK and other software libraries on SGI platform, it
> > >works fine when I use libraries with sproc mode, but after I switch to
> > >use POSIX-mode library, the program can not work, I doubt that VTK cause
> > >the problem, anybody can tell me if VTK can also support these two modes
> > >and how to switch between them ??(Makefile available??)
> > >   Thanks a lot!
> > >
> > >--
> > >Song Li
> > >VRAC(Virtual Reality Application Center),Iowa State University
> > >Email: lisong at vrac.iastate.edu
> > >Homepage: http://www.vrac.iastate.edu/~lisong
> > >
> > >
> >
> >
> >
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> -------------------------------------------------------------------
> Praveen Bhaniramka               Member of Technical Staff (MTS)
> praveenb at sgi.com                 Advanced Graphics Division
> (650)933-1785                    Silicon Graphics, Inc.
> -------------------------------------------------------------------

--
Song Li
VRAC(Virtual Reality Application Center),Iowa State University
Email: lisong at vrac.iastate.edu
Homepage: http://www.vrac.iastate.edu/~lisong


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