Have you implemented your own Thread::Queue then? But I'm not sure whether there is a way to see which thread holds a lock, other than adding print statements.

As a work around, I would try to restructure the code so that the work units fetched from the locked area are larger, and thus less lock contention happens. See Data::Stream::Bulk for a possible implementation.

In reply to Re: Debugging lock ownership by Corion
in thread Debugging lock ownership by Anonymous Monk

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