Kilim? - implements "green" threads in Java - apparently outperforms Erlang! However (unless Sriram says to the contrary) it suffers from the same problems green threads do generally.
Important point raised by Sriram: reference safety is more difficult to monitor in OO languages, so he stresses the need for "tree-like" reference patterns (same reasoning as for FBP "trees"). Kilim checks this programmatically, using type safety checking (how?).
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