Function luaC_step

freebsd/contrib/openzfs/module/lua/lgc.c:1176–1180

** performs a basic GC step only if collector is running */

** performs a basic GC step only if collector is running
*/
void luaC_step (lua_State *L) {
  global_State *g = G(L);
  if (g->gcrunning) luaC_forcestep(L);
  else luaE_setdebt(g, -GCSTEPSIZE);  /* avoid being called too often */
}