# facts.ludic - a fact's record reused (the ludic.wildlife idiom): a batch sent or failed is a fact
# a fact record no drain holds any more, made (and kept) only when every one is held
function telemetry__fact_record(telemetry_st: mut TelemetryState) -> TelemetryFact {
  if telemetry_st.telemetry__fnext[0] >= len(telemetry_st.telemetry__ffree) {
    q_unheld(telemetry_st.telemetry__facts, telemetry_st.telemetry__fpool, telemetry_st.telemetry__ffree)
    telemetry_st.telemetry__fnext[0] = 0
  }
  if telemetry_st.telemetry__fnext[0] < len(telemetry_st.telemetry__ffree) {
    let f = telemetry_st.telemetry__ffree[telemetry_st.telemetry__fnext[0]]
    telemetry_st.telemetry__fnext[0] += 1
    return f
  }
  @alloc_ok("the fact pool grows to the most facts in flight at once")
  let f = new TelemetryFact
  @alloc_ok("the fact pool grows to the most facts in flight at once")
  push(telemetry_st.telemetry__fpool, f)
  return f
}