If the program must wait for a resource, such as an I/O completion, specify a maximum wait time, and then fail or requeue the task for execution at a later time.
如果程序必须等待诸如I/O完成这样的某个资源，那么请指定最长的等待时间，以及随后是失效还是将任务重新排队以便稍后执行。
There have been many new APIs proposed to improve the scalability, such as /dev/poll, real-time signals, I/O completion ports, /dev/epoll, and kernel queues.
为了提高可伸缩性，已经提出了许多新的API，比如 /dev/poll、实时信号、I/O完成端口、/dev/epoll和内核队列。
The CreateIoCompletionPort function associates an I/O completion port with one or more file handles.
CreateIoCompletionPort函数会使一个I/O完成端口与一个或多个文件句柄发生关联。
There's a third way, before issuing the call you should associate the handle that you want to do overlapped I/O on with a completion port.
有第三种方法，在发出调用之前，您应该将要做的重叠I /O的句柄与完成端口关联。
The PostQueuedCompletionStatus function allows an application to queue its own special-purpose I/O completion packets to the completion port without starting an asynchronous I/O operation.
PostQueuedCompletionStatus函数允许应用程序可以针对自定义的专用I/O完成包进行排队，而无需启动一个异步I/O操作。
The PostQueuedCompletionStatus function allows an application to queue its own special-purpose I/O completion packets to the completion port without starting an asynchronous I/O operation.
PostQueuedCompletionStatus函数允许应用程序可以针对自定义的专用I/O完成包进行排队，而无需启动一个异步I/O操作。
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