IoServiceScheduler.Post.cs

    public virtual Task Post(Action action)
    {
      checkIfDisposed();

      if (action == null)
      {
        throw new ArgumentNullException("action");
      }

      return postInner(() => Dispatch(action));
    }

    public virtual Task Post(Func<Task> function)
    {
      checkIfDisposed();

      if (function == null)
      {
        throw new ArgumentNullException("function");
      }

      return postInner(() => Dispatch(function));
    }
    
    private Task postInner(Func<Task> dispatcher)
    {
      bool oldIsInServiceThread = m_isServiceThreadFlags.Value.IsServiceThread;

      try
      {
        clearCurrentThreadAsServiceFlag();
        return dispatcher();
      }
      finally
      {
        m_isServiceThreadFlags.Value.IsServiceThread = oldIsInServiceThread;
      }
    }