Re: [Xen-devel] [PATCH 21/28] libxl: ocaml: add wrappers for poll

[Rob Hoes <Rob.Hoes@xxxxxxxxxx>]

> On 25/03/13 14:45, Rob Hoes wrote:
> > +value Val_poll(short event)
> > +{
> > +   CAMLparam0();
> > +   CAMLlocal1(res);
> > +
> > +   switch (event) {
> > +           case POLLIN: res = Val_int(0); break;
> > +           case POLLPRI: res = Val_int(1); break;
> > +           case POLLOUT: res = Val_int(2); break;
> > +           case POLLERR: res = Val_int(3); break;
> > +           case POLLHUP: res = Val_int(4); break;
> > +           case POLLNVAL: res = Val_int(5); break;
> > +   }
> > +
> > +   CAMLreturn(res);
> > +}
> 
> Is it possible for none of the cases to match? If so, what would you like to
> happen-- it's worth being more explicit.

I'll probably add some sort of exception handling, or an "unknown" error state.

Cheers,
Rob

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