Date: Sat, 8 Aug 1998 07:59:06 +1000 (EST) From: John Birrell <jb@cimlogic.com.au> To: lists@tar.com Cc: current@FreeBSD.ORG Subject: Kernel threads (Was Re: Pthreads woes revisited.) Message-ID: <199808072159.HAA11063@cimlogic.com.au> In-Reply-To: <199808071503.KAA14839@ns.tar.com> from "Richard Seaman, Jr." at "Aug 7, 98 10:03:43 am"
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Richard Seaman, Jr. wrote: > Is there a description of what needs to be done, though? Are your > patches available anywhere? If someone is really going to look at > this, I assume they don't want to duplicate work already started, > and I assume they don't want to go in some direction the core team > doesn't support? There are a number of existing syscalls which need to be redesigned to allow a POSIX thread API. AFAIK, these syscalls were (are?) used by NCI and were added by John for them. They aren't built into the FreeBSD libc so I doubt that anyone else uses them. I haven't asked for opinions about cleaning this up (until now 8-). I think there are two stages to this work. The first is to get the syscall API in and working in a uni-processor environment. The second stage is to work on the SMP side, but as you'll note from messages posted by John, there is a significant amount of work there for someone with John's ability and level of understanding of the VM. I guess it is possible to complete the first stage now, but I doubt that the second stage will happen within 6 months. I'd also say that trying to do the second stage now would destabilize 3.0 and this is something I don't want to see happen. I know that this is not what people want to hear. -- John Birrell - jb@cimlogic.com.au; jb@freebsd.org http://www.cimlogic.com.au/ CIMlogic Pty Ltd, GPO Box 117A, Melbourne Vic 3001, Australia +61 418 353 137 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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