distributed_system_coursework/lib/utils.ex

defmodule Utils do
  def unicast(m, p) do
    case :global.whereis_name(p) do
      pid when is_pid(pid) -> send(pid, m)
      :undefined -> :ok
    end
  end

  def beb_broadcast(m, dest), do: for(p <- dest, do: unicast(m, p))

  def register_name(name, pid, link \\ true) do
    case :global.re_register_name(name, pid) do
      :yes ->
        # Note this is running on the parent so we are linking the parent to the rb
        # so that when we close the parent the rb also dies
        if link do
          Process.link(pid)
        end

        pid

      :no ->
        Process.exit(pid, :kill)
        :error
    end
  end
end