Method ReadProcNetDevLine

be/src/util/system-state-info.cc:181–201

}

void SystemStateInfo::ReadProcNetDevLine(
    const StringPiece& dev_string, NetworkValues* result) {
  StringPiece sp(dev_string);
  // Lines can have leading whitespace
  StripWhiteSpace(&sp);

  // Initialize result to 0 to simplify error handling below
  memset(result, 0, sizeof(*result));

  // Don't include the loopback interface
  if (sp.starts_with("lo:")) return;

  int colon_idx = sp.find_first_of(':');
  if (colon_idx == StringPiece::npos) {
    KLOG_EVERY_N_SECS(WARNING, 60) << "Failed to parse interface name in line: "
        << sp.as_string();
    return;
  }

  ReadIntArray(sp.substr(colon_idx + 1), NUM_NET_VALUES, result);
}

void SystemStateInfo::AddNetworkValues(const NetworkValues& a, NetworkValues* b) {
  for (int i = 0; i < NUM_NET_VALUES; ++i) (*b)[i] += a[i];