Re: how to handle input device
John Rohlf (jrohlf++at++tubes)
Wed, 23 Aug 95 18:34:37 PDT
>
>
> >
> > Thanks for your reply.
> > Your comment that UNIX signal should not be used with Performer process is
> > very important for me since I am designing a simulator using signal(SIGIO) for
> > input handling! I couldn't find something like that from Performer manuals..
> > Do you know the details about that? Or does anyone know?
> >
> > Yutaka Kanou(3D Incorporated)
> > d3++at++po.iijnet.or.jp
> >
> >
>
> I`m sorry , I haven't more infos. But only one remark is that
> I believe that you could not install some signal handlers in the
> Performer-processes (APP, CULL, DRAW) because some (which ones ???) maybe are
> used to Sync the processes. Maybe I'm wrong, but it was the only restriction
> (the use of signal) people of SGI France told me.
>
> That's why, I believe you could not use sockets with SIGIO in the APP process.
The only signals Performer traps are SIGCHLD and SIGHUP. It
ignores SIGCHLD signals from non-Performer processes.
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on Mon Aug 10 1998 - 17:51:49 PDT