Readdirectorychangesw 阻塞
Web我已经阅读了 ReadDirectoryChangesW() 的文档，还看到了 CDirectoryChangeWatcher project ，但都没有说明为什么人们想要异步调用它。 我知道 current 线程不会阻塞，但 … WebDec 19, 2005 · 关于用ReadDirectoryChangesW函数异步监控目录的问题. 我用ReadDirectoryChangesW函数异步监控特定目录下是否有新文件增加,采用完成端口方式,但我发现用异步调用时,当一次增加很多文件时,该函数会丢失事件,使得有一些新加的文件漏了.但用同步方式好像没有这个问题,不 ...
Readdirectorychangesw 阻塞
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WebI want to use function ReadDirectoryChangesW() in asynchronous mode with I/O completion routine supplied.. The question is I don't know how to retrieve the exact information about the change in the completion routine (a CALLBACK function). Completion routine … WebJun 30, 2008 · 小弟之前有篇关于监控文件(夹)的文章,利用的是API函数ReadDirectoryChangesW,当时图方便啊,使用ReadDirectoryChangesW进行同步监控文件(夹),现在突然发现自己居然没有手段让运行阻塞的ReadDirectoryChangesW函数的线程正常地退出,继而导致很多资源无法释放,恼火了.无奈之下只好又写了异步的版本。
WebSep 5, 2024 · First, open your directory handle as normal. Next, associate it with your IOCP by calling CreateIoCompletionPort () and passing the IOCP handle in (see docs for more details). Finally, call ReadDirectoryChangesW () and pass an OVERLAPPED as detailed in the docs. The call will return, and if successful, the results will become available as the ... ReadDirectoryChangesW fails with ERROR_NOACCESS when the buffer is not aligned on a DWORD boundary. ReadDirectoryChangesW fails with ERROR_NOTIFY_ENUM_DIR when the system was unable to record all the changes to the directory. In this case, you should compute the changes by … See more [in] hDirectory A handle to the directory to be monitored. This directory must be opened with theFILE_LIST_DIRECTORY access right, or an access right such as … See more If the function succeeds, the return value is nonzero. For synchronous calls, this means that the operationsucceeded. For asynchronous calls, this indicates that the … See more To obtain a handle to a directory, use the CreateFilefunction with the FILE_FLAG_BACKUP_SEMANTICSflag. A call to … See more
WebSep 29, 2024 · 当缓冲区长度大于 64 KB 且应用程序通过网络监视目录时，ReadDirectoryChangesW 失败，ERROR_INVALID_PARAMETER。 这是因为数据包大小 …
WebJun 28, 2024 · 在 ReadDirectoryChangesW 的声明中，你会注意到第一个参数是一个目录的句柄。. 你是否知道你可以获得一个目录的句柄呢？. 名为OpenDirectory的函数是不存在 的，CreateDirectory也不会返回句柄。. 第一个参数的文档是这样描述的：”这个目录必须以 FILE_LIST_DIRECTORY 访问 ...
Web我已经阅读了 ReadDirectoryChangesW() 的文档，还看到了 CDirectoryChangeWatcher project ，但都没有说明为什么人们想要异步调用它。 我知道 current 线程不会阻塞，但是，至少对于使用完成端口的 CDirectoryChangeWatcher 代码，当它调用 GetQueuedCompletionStatus() 时，that 无论如何线程 block (如果没有变化)。 grace hawksburnWeb在下文中一共展示了ReadDirectoryChangesW函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐 … chillicothe constitution tribune obituariesWebMay 24, 2006 · 一、java中断机制 当外部线程对某线程调用了thread.interrupt()方法后，java语言的处理机制如下： 如果该线程处在可中断状态下，（调用了xx.wait()，或 … grace hawkins facebookWebApr 3, 2024 · ReadDirectoryChangesW() returns changes in a data structure, called FILE_NOTIFY_INFORMATION. It is basically a custom single-linked list, where the nodes contain the relative path and the type of ... grace hayba twitterWebNov 10, 2024 · 问题在于我对ReadDirectoryChangesW的使用，因为在我注释掉这段代码之后，一切都正常。 一旦事件句柄被发出信号，ReadDirectoryChangesW阻塞线程，阻止线程“捕获”事件并退出。如果我在目录中添加一个新文件，它会返回“事件”和“退出”。 grace hawkinsWebApr 29, 2016 · ReadDirectoryChangesW 为阻塞型函数，很多人会使用TerminateThread强制结束该线程，但这样会导致资源无法释放。 最好的方法是：创建一个手动重置的 Event … chillicothe computer repairWebMay 4, 2012 · It seems to me that you are mixing the various ways to use ReadDirectoryChangesW(), you do both specify the FILE_FLAG_OVERLAPPED flag when opening the directory and provide a pointer to the lpOverlapped parameter, meaning you want to wait on the event in the structure and handle the asynchronous I/O; and at the … grace hayba body measurements