Joanie found a problem with my last incarnation of this fix. The result
was a deadlock. I've tried to avoid this by changing the way the locks
are acquired. In particular, the __del__ method checks to see if it
must acquire the lock, or already has it. This is a bit kludgey, but
it's a corner-case of a corner-case. I've also added a bunch of
asserts, updated the faux lock DummyLock, and switched the transport to
use NRLock, which will result in a traceback instead of a deadlock if
this problem ever happens again.
http://cr.opensolaris.org/~johansen/webrev-14240-3/
Thanks,
-j
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