Function rcl_sys::rcl::subscription::rcl_take

pub unsafe extern "C" fn rcl_take(
    subscription: *const rcl_subscription_t, 
    ros_message: *mut c_void, 
    message_info: *mut rmw_message_info_t, 
    allocation: *mut rmw_subscription_allocation_t
) -> rcl_ret_t

Take a ROS message from a topic using a rcl subscription.