From owner-freebsd-current  Mon Nov 26 12:32:54 2001
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Date: Mon, 26 Nov 2001 15:32:51 -0500 (EST)
From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
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To: "Andrew R. Reiter" <arr@FreeBSD.org>
Cc: freebsd-current@FreeBSD.org
Subject: Re: libfetch kqueue patch
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<<On Mon, 26 Nov 2001 15:27:45 -0500 (EST), "Andrew R. Reiter" <arr@FreeBSD.org> said:

> As from OpenBSD (in shorter form):

> 	fd_set *fds = calloc(howmany(fd+1, NFDBITS), sizeof(fd_mask));

But this is not portable.  The application is not allowed to assume
anything about the structure of an fd_set, or the existence of a type
`fd_mask', or the existence of a macro `howmany' (which is actually
prohibited).  The only portable (in the sense of officially
standardized) interface that doesn't suffer from this problem is
poll().

-GAWollman


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