Date: Wed, 30 Apr 2003 20:39:47 -0400 (EDT) From: Daniel Eischen <eischen@pcnet1.pcnet.com> To: Julian Elischer <julian@elischer.org> Cc: threads@freebsd.org Subject: Re: Question about rtld-elf. Anyone?.. Anyone? Message-ID: <Pine.GSO.4.10.10304302033540.4525-100000@pcnet1.pcnet.com> In-Reply-To: <Pine.BSF.4.21.0304301731130.63218-100000@InterJet.elischer.org>
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On Wed, 30 Apr 2003, Julian Elischer wrote: > What would be cool would be a signal handler for SIGUSR1 > or something that dumps out (to somewhere) a full thread state table. Where have you been? We've had that in libc_r, libthr (I believe), and libpthread via SIGINFO :-) The problem is that rtld-elf uses sigprocmask to block all the signals within its critical regions, so only SIGKILL works. I've made some local changes to rtld-elf just to test out different theories, but it's beyond me (well, I don't really want to devote lots of time trying to understand all the inner workings of it) to make the kind of changes that jdp had mentioned. > On Wed, 30 Apr 2003, Terry Lambert wrote: > > > Daniel Eischen wrote: > > > As an experiment, I made the dlfoo calls in rtld-elf weak > > > (__dlfoo -> dlfoo) and then overrode them in libpthread > > > and protected them with mutexes. > > > > > > I can get mozilla to work about 1/2 of the time now, but > > > it still gets stuck in the same state the other 1/2 of > > > the time. This is a bit of an improvement, and seems to > > > indicate (at least to me) that rtld-elf is the culprit. > > > > > > Is there maybe a way to get the thread that was running when > > the process was involuntarily preempted run first, instead of > > running it based on priority? Netscape, at least, made this > > assumption for Java and Javascript pages. > > > > Alternately, you may try disabling Java* in Mozilla, and see > > if that keeps you from crashing. > > > > Also try not moving the mouse until everything is loaded, and > > see if that saves you, too. > > > > -- Terry -- Dan Eischen
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