OpenTween.TweenMain.tw_NewPostFromStream C# (CSharp) Method

        private async void tw_NewPostFromStream(object sender, EventArgs e)
        {
            if (this._cfgCommon.ReadOldPosts)
            {
                _statuses.SetReadHomeTab(); //新着時未読クリア
            }

            this._statuses.DistributePosts();

            if (this._cfgCommon.UserstreamPeriod > 0) return;

            // userStreamsRefreshing が 0 (インクリメント後は1) であれば RefreshTimeline を実行
            if (Interlocked.Increment(ref this.userStreamsRefreshing) == 1)
            {
                try
                {
                    await this.InvokeAsync(() => this.RefreshTimeline())
                        .ConfigureAwait(false);
                }
                finally
                {
                    Interlocked.Exchange(ref this.userStreamsRefreshing, 0);
                }
            }
        }