Yielding from C

I have a simple Lua function like this:

function test( x )

while x>0 do

print(x);

x=x-1;

coroutine.yield();

end

Basically it prints one number every time it is resumed. From C I can do:

co=lua_newthread(L);

lua_getglobal(co,”test”);

lua_pushinteger(co,100);

lua_resume(co,1);

Then keep calling lua_resume(co,0) until the thread is done.

Is it possible to write a C function “test” that behaves the exact same way? Obviously it can’t have a loop with a yield in the middle, because that’s not going to work in C. The C code will need to yield and put the thread in such a state that the next lua_resume will call it again. Also there’s the matter of storing ‘x’ in the thread’s state to act like a local variable.

Any ideas?

Regards

Ivo