Re: [rfc] epoll interface change and glibc bits ...

From: Mark Mielke (mark@mark.mielke.cc)
Date: Wed Nov 20 2002 - 18:51:35 EST

On Wed, Nov 20, 2002 at 03:19:30PM -0800, Davide Libenzi wrote:
> On Wed, 20 Nov 2002, Mark Mielke wrote:
> > > struct epoll_event {
> > > unsigned short events;
> > > unsigned short revents;
> > > __uint64_t obj;
> > > };
> > Forget any argument I had against removing 'fd'. This sounds good.
> > Perhaps 'obj' should be named 'userdata'?
> > struct epoll_event {
> > unsigned short events;
> > unsigned short revents;
> > __uint64_t userdata;
> > };
> Do we want to have a union instead of a direct 64bit int ?

I was going to suggest this, except I couldn't figure out what to
suggest that it look like... I finally figured that the value could be
cast, or wrapped in a union by userspace (although theoretically, this
might mean more words than absolutely necessary to initialize on a
32-bit CPU...)

What were you thinking? 1X64 bit or 2X32 bit?

mark 

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