Re: [PATCH] Final: thread lock nesting debugging

[Neil Jerram]

2008/11/17 Linas Vepstas <address@hidden>:
> I've been seeing all sorts of deadlocks in guile, and so I wrote a small
> debugging utility to try to track down the problems.

Interesting patch!

One query; I may be being a bit dumb, I'm only just recovering from a
bad cold, but anyway...  Your patch checks for a thread unlocking
mutexes in the reverse order that it locked them in (let's call this
point "A").  But I thought your recent investigations had shown that
the problem was threads doing locking in inconsistent order, e.g.
thread 1 locks M1 and then M2, while thread 2 locks M2 and then M1
(point "B").  Are points "A" and "B" equivalent?  (It isn't obvious to
me if so.)

Regards,
       Neil