method resizeFunctionWorkers

Source

resizeFunctionWorkers(int count, WorkerFunction function,
  {Map<String, dynamic> metadata}) async {
  if (sockets.length < count) {
    for (var i = sockets.length + 1; i <= count; i++) {
      var sock = createWorker(function, metadata: {
        "workerId": i
      }..addAll(metadata == null ? {} : metadata));
      sock._pool = this;
      sock.onReceivedMessageHandler = (msg) {
        if (onMessageReceivedHandler != null) {
          onMessageReceivedHandler(i, msg);
        }
      };
      await sock.init();
      sockets.add(sock);
    }
  } else {
    await reduceWorkers(count);
  }
}