public IEnumerator Do()
        {
            using (var defer = new Defer())
            {
                var thread = new System.Threading.Thread(() =>
                {
                    try
                    {
                        Result = _func();
                    }
                    catch (Exception e)
                    {
                        Error = e;
                    }
                });

                thread.Start();
                defer.Add(() =>
                {
                    if (thread.IsAlive)
                    {
                        thread.Abort();
                    }
                });

                while (thread.IsAlive)
                {
                    yield return(null);
                }
            }
        }
        public IEnumerator Do()
        {
            Executor executor = new Executor();

            using (var defer = new Defer())
            {
                defer.Add(() =>
                {
                    foreach (Coroutine c in executor)
                    {
                        c.Dispose();
                    }
                    executor.Clear();
                });

                for (int i = 0; i < _ms.Length; ++i)
                {
                    executor.Add(_Do(_ms[i]));
                }

                executor.Resume(Coroutine.Delta);
                while (!executor.Finished)
                {
                    if (Error != null)
                    {
                        yield break;
                    }
                    yield return(null);

                    executor.Resume(Coroutine.Delta);
                }

                if (Error != null)
                {
                    yield break;
                }
                Result = System.Array.ConvertAll(_ms, m => m.Result);
            }
        }