Date: Wed, 7 Aug 2002 14:43:32 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Martin Blapp <mb@imp.ch> Cc: Daniel Eischen <eischen@pcnet1.pcnet.com>, <hackers@FreeBSD.ORG>, <jdp@polstra.com>, <deischen@FreeBSD.ORG> Subject: Re: Help needed. Deadlock in rtld makes openoffice build hang ag Message-ID: <200208072143.g77LhWxd000805@apollo.backplane.com> References: <20020807204231.R58571-100000@levais.imp.ch>
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:hi,
:
:> It must have got interrupted while in a critical section.
:> Something may have grabbed a spinlock that the thread needs
:> inside a critical section.
:
:How can I debug that ? And is this a libc_r problem or a rtld
:problem (which uses spinlocks) ?
In rtld-elf/i386/lockdflt.c, put some code in the
wlock_acquire() loop to fault out or print an error message
when lock contention is detected. If you know what threading
package OpenOffice is using you could also setup a callback
vector for rtld to call inside its lock acquisition loop to
force a context switch. A hack, I know, but it may be the
only real solution.
-Matt
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