Function hrtime

lib/internal/process/per_thread.js:78–97

(time)

const hrBigintValues = new BigUint64Array(binding.hrtimeBuffer.buffer, 0, 1);

function hrtime(time) {
  binding.hrtime();

  if (time !== undefined) {
    validateArray(time, 'time');
    if (time.length !== 2) {
      throw new ERR_OUT_OF_RANGE('time', 2, time.length);
    }

    const sec = (hrValues[0] * 0x100000000 + hrValues[1]) - time[0];
    const nsec = hrValues[2] - time[1];
    const needsBorrow = nsec < 0;
    return [needsBorrow ? sec - 1 : sec, needsBorrow ? nsec + 1e9 : nsec];
  }

  return [
    hrValues[0] * 0x100000000 + hrValues[1],
    hrValues[2],
  ];
}

function hrtimeBigInt() {
  binding.hrtimeBigInt();