class Pool

static VALUE
rb_fiber_pool_initialize(int argc, VALUE* argv, VALUE self)
{
    rb_thread_t *th = GET_THREAD();
    VALUE size = Qnil, count = Qnil, vm_stack_size = Qnil;
    struct fiber_pool * fiber_pool = NULL;

    // Maybe these should be keyword arguments.
    rb_scan_args(argc, argv, "03", &size, &count, &vm_stack_size);

    if (NIL_P(size)) {
        size = INT2NUM(th->vm->default_params.fiber_machine_stack_size);
    }

    if (NIL_P(count)) {
        count = INT2NUM(128);
    }

    if (NIL_P(vm_stack_size)) {
        vm_stack_size = INT2NUM(th->vm->default_params.fiber_vm_stack_size);
    }

    TypedData_Get_Struct(self, struct fiber_pool, &FiberPoolDataType, fiber_pool);

    fiber_pool_initialize(fiber_pool, NUM2SIZET(size), NUM2SIZET(count), NUM2SIZET(vm_stack_size));

    return self;
}