将所有文件记录在一个大目录中

发布于 2024-07-11 14:34:34 字数 542 浏览 4 评论 0原文

我有许多目录，其中包含大量文件（约 10,000 个）。我想在我的应用程序中创建这些文件的列表，并且已经对 io 访问进行了线程化，以便应用程序在加载时不会冻结。但是，如果我在加载所有文件之前退出应用程序，则线程不会响应 .Join()，直到完成对 dirInfo.GetFiles(...) 的调用：

// ... mythread
    DirectoryInfo dirInfo = new DirectoryInfo(path);
    foreach(FileINfo file in dirInfo.GetFiles(extension)) 
    {
        // with large directories, the GetFiles call above 
        //    can stall for a long time
        ...

将文件缓存到 foreach 之外只会解决问题。我需要某种线程式回调方式来查找目录中的文件，但我不知道该怎么做。任何帮助，将不胜感激。

非常感谢，坦普恩。

原文

I've got a number of directories with a large number of files in them (~10,000). I want to create a list of these files in my app, and have already threaded the io access so that the app doesn't freeze while they load. However if I exit the app before all files are loaded, the thread doesn't respond to the .Join() until the call to dirInfo.GetFiles(...) is completed:

// ... mythread
    DirectoryInfo dirInfo = new DirectoryInfo(path);
    foreach(FileINfo file in dirInfo.GetFiles(extension)) 
    {
        // with large directories, the GetFiles call above 
        //    can stall for a long time
        ...

Caching the files out of the foreach just moves the problem. I need some kind of threaded, callback-y way of finding the files in the directory and I'm not sure how to do that. Any help would be appreciated.

Many thanks,
tenpn.

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情魔剑神 2024-07-18 14:34:34

您应该使用 ThreadPool 类中的线程。这将使其成为后台线程，并且当应用程序关闭时它应该收到 ThreadInteruptException。

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月寒剑心 2024-07-18 14:34:34

当您的应用程序即将执行时，您可以调用 Thread.Abort()关闭（在加入之前）。

myThread.Abort();
// Wait for myThread to end.
myThread.Join();

另外，您可能希望在线程方法中捕获 ThreadAbortException 并在必要时进行一些终结/清理。

try {
    DirectoryInfo dirInfo = new DirectoryInfo(path);
    foreach(FileINfo file in dirInfo.GetFiles(extension)) 
    {
        // with large directories, the GetFiles call above 
        //    can stall for a long time
        ...
    }
}
catch (ThreadAbortException e)
{
    // cleaning
}

You can call Thread.Abort() when your application is about to close (before the Join).

myThread.Abort();
// Wait for myThread to end.
myThread.Join();

Also, you might want to catch the ThreadAbortException in the thread method and do some finalization/cleaning, if necessary.

try {
    DirectoryInfo dirInfo = new DirectoryInfo(path);
    foreach(FileINfo file in dirInfo.GetFiles(extension)) 
    {
        // with large directories, the GetFiles call above 
        //    can stall for a long time
        ...
    }
}
catch (ThreadAbortException e)
{
    // cleaning
}

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