Method _stamp

test/async-hooks/init-hooks.js:148–153

(h, hook)

  }

  _stamp(h, hook) {
    if (h == null) return;
    h[hook] ??= [];
    const time = process.hrtime(this._start);
    h[hook].push((time[0] * 1e9) + time[1]);
  }

  _getActivity(uid, hook) {
    const h = this._activities.get(uid);