我如何知道线程已完成其任务？
举个例子：-
我使用 CreateThread Api 创建了线程 pThread，它将执行一些任务，比如 vSampleTask
我怎么知道 pThread 已经完成它的任务了吗？
谢谢
Say for an example:-
I have created thread pThread using CreateThread Api which will perform some task say vSampleTask
How will i know that pThread has completed its task?
Thanks
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您可以使用
WaitForSingleObject或其他等待函数之一。您可以使用MsgWaitForMultipleObjects例如，允许您的等待被输入消息打断。当线程执行完成时，线程句柄将发出信号。作为替代方法，您可以通过调用
GetExitCodeThread。如果线程仍然繁忙，则返回FALSE；如果线程已完成，则返回TRUE。如果线程已完成，则还将返回退出代码。如果一个线程需要等待另一个线程完成，那么您应该使用等待函数，而不是调用
GetExitCodeThread的繁忙轮询循环。繁忙的循环和轮询只会消耗不必要的 CPU（和电量）。等待函数允许等待线程变得空闲。You can wait on the thread handle with
WaitForSingleObjector one of the other wait functions. You can useMsgWaitForMultipleObjectsto allow your wait to be interrupted by input messages, for example. The thread handle becomes signaled when the thread's execution has completed.As an alternative, you can check on a thread's status by calling
GetExitCodeThread. This will returnFALSEif the thread is still busy, andTRUEif it has completed. If the thread has completed, then the exit code will also be returned.If one thread needs to wait for another to be complete then you should use the wait functions rather than a busy polling loop calling
GetExitCodeThread. Busy loops and polling will just consume needless amounts of CPU (and power). Wait functions allow the waiting thread to become idle.您可以使用
GetExitCodeThread来询问线程的状态。You can get
GetExitCodeThreadto ask for the status of the thread.