Function insertGuarded

lib/internal/timers.js:361–384

(item, refed)

// Appends a timer onto the end of an existing timers list, or creates a new
// list if one does not already exist for the specified timeout duration.
function insertGuarded(item, refed) {
  const msecs = item._idleTimeout;
  if (msecs < 0 || msecs === undefined)
    return;

  insert(item, msecs);

  const isDestroyed = item._destroyed;
  if (isDestroyed || !item[async_id_symbol]) {
    item._destroyed = false;
    initAsyncResource(item, 'Timeout');
  }

  if (isDestroyed) {
    if (refed)
      incRefCount();
  } else if (refed === !item[kRefed]) {
    if (refed)
      incRefCount();
    else
      decRefCount();
  }
  item[kRefed] = refed;
}

// We need to use the binding as the receiver for fast API calls.
function insert(item, msecs, start = binding.getLibuvNow()) {