Xavier Leroy <Xavier.Leroy@inria.fr> writes:

> The "system threads" OCaml library addresses this issue by having one
> global master lock that must be acquired in order to run Caml code or
> call most run-time facilities, including the allocator and the GC.
> This lock is released when calling C from OCaml (allowing other
> threads to execute Caml code) and reacquired again before resuming
> execution of Caml code.

How good or bad an arrangement is this?  I've been asked about the
threading facilities of ocaml, but I don't know enough to compare and
contrast, say, ocaml and Java.
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