Struct rmw_service_info_t 

#[repr(C)]
pub struct rmw_service_info_t {
    pub source_timestamp: rmw_time_point_value_t,
    pub received_timestamp: rmw_time_point_value_t,
    pub request_id: rmw_request_id_t,
}

Per-request metadata — upstream rmw_service_info_t, field for field.

Issue 2081. Filled by take_request_with_info for a request and, since issue 2136, by take_response_with_info for a reply. As in rmw_message_info_t, a field the backend cannot report is ZERO: a timestamp of 0 means “not stamped”, and an all-zero request_id.writer_guid means the request id is not reported. The runtime turns each into None, never into a value.

The timestamps are the SENDER’s and the RECEIVER’s, as upstream’s are: for a request, the client’s send time and the server’s arrival time; for a reply, the server’s send time and the client’s arrival time.

Fields

source_timestamp: rmw_time_point_value_t

Sender’s clock when the message was sent, ns. 0 = not reported.

received_timestamp: rmw_time_point_value_t

Receiver’s clock when the message was received, ns. 0 = not reported.

request_id: rmw_request_id_t

The request: who sent it, and its client-assigned sequence number.

Trait Implementations

impl Clone for rmw_service_info_t

fn clone(&self) -> rmw_service_info_t

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for rmw_service_info_t

impl Debug for rmw_service_info_t

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.