Date: Mon, 11 Feb 2008 08:24:02 +0100 From: Olaf Wagner <wagner@luthien.in-berlin.de> To: Alfred Perlstein <alfred@freebsd.org> Cc: freebsd-threads@freebsd.org Subject: Re: FreeBSD Threading Documentation Message-ID: <20080211072402.GA59256@luthien.in-berlin.de> In-Reply-To: <20080211031325.GF99258@elvis.mu.org> References: <20080211013728.GB54462@luthien.in-berlin.de> <20080211031325.GF99258@elvis.mu.org>
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On Sun, Feb 10, 2008 at 07:13:25PM -0800, Alfred Perlstein wrote: > * Olaf Wagner <wagner@luthien.in-berlin.de> [080210 18:37] wrote: > > I haven't found much, so I think I'll have to ask here after all: > > > > Is there any overview article or design document about the > > different threading implementations in FreeBSD? > > There have been a few approaches taken over the years, > an N-1(libc_r), N-M(libkse) and N-N (libthr). > > Currently FreeBSD supports pthreads using libthr which > is pretty much the same way that Solaris and Linux support > pthreads. That's about how much I had already figured out :-) I am looking for something a little bit longer (let's say about 5-12 pages) which discusses the design and compares two or more of the solutions. Or is the source code the only available documentation? The FreeBSD documentation project has amassed such a wealth of information, but I couldn't find anything related to threads, which does not seem a very uncommon topic to me. The reason because I'm asking is that I've started to use FreeBSD's system threading libraries for CM3 instead of the built-in user threads system, and there are several interesting effects (hangs, assertion failures, ...) with one or the other of the libraries, which may either be located in M3 or in C code. Olaf -- /\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ || Olaf Wagner | wagner(at)luthien.in-berlin.de (priv.)| || Cranachstrasse 7 | wagner(at)elego.de (business) | || D-12157 Berlin | phone: +49 30 85 60 26 70 | || Germany / Deutschland | ab/am: +49 30 85 58 01 81 | \/////////////////////////////////////////////////////////////////
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