上一篇讲了轮询的边角料,这篇进入正题.(竟然真有人看我博客,上两个图给你们整理下思路) 这是轮询总流程图. 下图为本节内容简图. Poll for I/O The loop blocks for I/O. At this point the loop will block for I/O for the duration calculated in the previous step. All I/O related handles that were monitoring a given fi