Function time_encode

crates/client-api/src/routes/subscribe.rs:1784–1788

Measure serialization/compression time for one websocket payload.

(encode: impl FnOnce() -> (InUseSerializeBuffer, T))

/// Measure serialization/compression time for one websocket payload.
fn time_encode<T>(encode: impl FnOnce() -> (InUseSerializeBuffer, T)) -> (Duration, InUseSerializeBuffer, T) {
    let start = Instant::now();
    let (in_use, data) = encode();
    (start.elapsed(), in_use, data)
}

/// Build binary websocket frames and payload metrics for encoded bytes.
fn ws_encode_binary_frames(