rb_define_method (c, "delete", c_delete, 0);
rb_define_method (c, "fd", c_fd_get, 0);
rb_define_method (c, "get_active", c_get_active, 1);
rb_define_method (c, "delete", c_delete, 0);
rb_define_method (c, "fd", c_fd_get, 0);
rb_define_method (c, "get_active", c_get_active, 1);