As some might recall, we have implemented a software PLC in Ocaml. This 
product is undergoing a complete rewrite as it is being generalized from 
the original proof-of-concept implementation where we had hard-wired 
support for Parker Hannifin servodrives. The new implementation will 
allow for indefinite fieldbuses, operating independently of each other. 
To decouple the different fieldbus IO managers we extensively use 
threads. Now, I am wondering if and how it is possible to debug a 
running multithreaded application. How does ocamldebug behave in such 
situations?

Alex


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