Date: Sat, 10 Nov 2001 11:09:48 +1100 From: Edwin Groothuis <edwin@mavetju.org> To: Guy Helmer <ghelmer@palisadesys.com> Cc: freebsd-hackers@freebsd.org Subject: Re: pcap/bpf in a multi-threaded environment Message-ID: <20011110110948.B35711@k7.mavetju.org> In-Reply-To: <HEEHKIJOHDLFOOEBABJIAEJGCAAA.ghelmer@palisadesys.com>; from ghelmer@palisadesys.com on Fri, Nov 09, 2001 at 10:56:30AM -0600 References: <20011109225532.A3919@k7.mavetju.org> <HEEHKIJOHDLFOOEBABJIAEJGCAAA.ghelmer@palisadesys.com>
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On Fri, Nov 09, 2001 at 10:56:30AM -0600, Guy Helmer wrote: > The problem is probably due to the poll system call that the threaded > library does before performing the read(). In the non-threaded case, the > read() returns when the timeout is hit; in the threaded case, the threaded > library's poll() has to succeed before the read system call will be > executed, and poll() won't succeed until the buffer is full. > > If you would like to try this patch (relative to FreeBSD 4.3) to > /sys/net/bpf.c and /sys/net/bpfdesc.h and let me know if it helps, I will > add this patch to PR 22063 and perhaps commit it if it passes review. It works like a charm now! Thanks for this. It's really really nice to have a 'proper' working application now :-) I would be happy if you could get this fixed in the source-tree, so that I (and other people of course) can enjoy the charms of bpf-access in a threaded environment! Edwin -- Edwin Groothuis | Personal website: http://www.MavEtJu.org edwin@mavetju.org | Interested in MUDs? Visit Fatal Dimensions: ------------------+ http://www.FatalDimensions.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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