摘要： Overlapped I/O是Windows系统上的Asynchronous I/O implementation。啥叫asynchronous I/O ？借用Linux Man page中对AIO的介绍：The POSIX asynchronous I/O (AIO) interface allows applications to initiate one or more I/O operations that are performed asynchronously (i.e., in the background). The application can elect to be no 阅读全文