[Gc] Stopping the world on Darwin

Boehm, Hans hans.boehm at hp.com
Tue Jun 29 17:53:51 PDT 2004


I unfortunately can't test this.  Since nobody objected, I went
ahead and applied it.


> -----Original Message-----
> From: gc-bounces at napali.hpl.hp.com
> [mailto:gc-bounces at napali.hpl.hp.com]On Behalf Of Dick Porter
> Sent: Friday, June 18, 2004 2:10 AM
> To: gc at napali.hpl.hp.com
> Subject: [Gc] Stopping the world on Darwin
> We've been seeing deadlocks when running mono on darwin.  It turns out
> that the world wasn't stopping - the test for the thread run state was
> never being satisfied.
> On our test machine (Darwin macmono.boston.ximian.com 7.4.0 Darwin
> Kernel Version 7.4.0: Wed May 12 16:58:24 PDT 2004;
> root:xnu/xnu-517.7.7.obj~7/RELEASE_PPC  Power Macintosh powerpc) the
> thread_info() state is always TH_STATE_WAITING, never 
> Even when thread_suspend() has been called, the state doesn't seem to
> change.  However, the suspend_count does seem to work.
> A patch against 6.3alpha6 is attached, along with the simple test
> program I used (which is slightly more complex than it might 
> be, because
> at first I was thinking it was a pthread_cond_timedwait() 
> interaction.)
> - Dick

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