method reduceWorkers

Source

reduceWorkers(int count) async {
  if (sockets.length > count) {
    var toRemove = sockets.length - count;
    List<WorkerSocket> socks = sockets
      .skip(count)
      .take(toRemove)
      .toList();
    for (var sock in socks) {
      await sock.close();
      sock.kill();
      sockets.remove(sock);
    }
  }
}