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On Sat, Feb 12, 2011 at 19:39, Francesco Abbate <francesco.bbt@gmail.com> wrote:
> Hi all,
>
> As many have already pointed out there is a big problem when using
> external C libraries that repeatedly calls Lua callback functions,
> like Leo Razoumov was mentioning for numerical integration routines
> that requires a pointer to a C function to evaluate the function. The
> problem is that in these circumstances LuaJIT is not able to optimize
> the Lua callback function because it is called from the C code.
>

Mike Pall recently pointed out a clean approach to facilitate
Lua->C->Lua calls using C-side coroutines.
http://lua-users.org/lists/lua-l/2011-02/msg00455.html
Most importantly, this method does not preclude LuaJIT optimizations.

--Leo--