[Openmcl-devel] lock owner: how to access?

[Alexander Repenning]

In cases where some kind of deadlock includes the user/"initial" thread CCL becomes unresponsive (understandably and justifiably). OS X will show the spinning beach ball and there is not much left for the user to do other than to force quit the app. However, a separate "deadlock detection" thread can continue even in these situations and could do a little introspection of threads and locks to potentially detect a deadlock situation. This could be very useful for debugging as it could spit out some into into alt console.

Question: there is some introspection that could be done on threads/processes but what about locks? If, say, process p1 grabs lock l1, is there a way to access this information? In other words, how would one write a (grabbed-by <lock>) function?

Alex