Function eventLoopUtilization

lib/internal/worker.js:699–721

(util1, util2)

}

function eventLoopUtilization(util1, util2) {
  // TODO(trevnorris): Works to solve the thread-safe read/write issue of
  // loopTime, but has the drawback that it can't be set until the event loop
  // has had a chance to turn. So it will be impossible to read the ELU of
  // a worker thread immediately after it's been created.
  if (!this[kIsOnline] || !this[kHandle]) {
    return { idle: 0, active: 0, utilization: 0 };
  }

  // Cache loopStart, since it's only written to once.
  if (this[kLoopStartTime] === -1) {
    this[kLoopStartTime] = this[kHandle].loopStartTime();
    if (this[kLoopStartTime] === -1)
      return { idle: 0, active: 0, utilization: 0 };
  }

  return internalEventLoopUtilization(
    this[kLoopStartTime],
    this[kHandle].loopIdleTime(),
    util1,
    util2,
  );
}

module.exports = {
  ownsProcessState,