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C#多线程例子

0
悬赏园豆:20 [已解决问题] 解决于 2016-05-19 14:37

我现在写了个代码,但不确定是不是开启了多线程,并且这种写法是不是很LOW啊?

 1 static void Main(string[] args)
 2         {
 3             Thread thread1 = new Thread(test1);
 4             thread1.Start();
 5             Thread thread2 = new Thread(test2);
 6             thread2.Start();
 7             Thread thread3 = new Thread(test3);
 8             thread3.Start();
 9         }
10         public static void test1()
11         {
12             for (int i = 0; i < 1000000000; i++)
13             {
14                 Console.Write("x");    
15             }
16             
17         }
18         public static void test2()
19         {
20             for (int i = 0; i < 1000000000; i++)
21             {
22                 Console.Write("y");
23             }
24         }
25         public static void test3()
26         {
27             for (int i = 0; i < 1000000000; i++)
28             {
29                 Console.Write("z");
30             }
31         }

如上图,我这算是多线程吗?并且有没有比较给力点的写法?

猫出没的主页 猫出没 | 菜鸟二级 | 园豆:219
提问于:2016-05-19 14:06
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最佳答案
0

是多線程。

推薦System.Threading.Tasks下的Parallel

收获园豆:20
RosonJ | 老鸟四级 |园豆:4910 | 2016-05-19 14:16

能大概写下例子吗?我这边现在比较想要点高大上的写法,,,原来我对多线程不熟。。

猫出没 | 园豆:219 (菜鸟二级) | 2016-05-19 14:25

@猫出没: 

static void Main(string[] args)
{
    DirectoryInfo di = new DirectoryInfo(Directory.GetCurrentDirectory());

    Scan s = new Scan();
    s.scanFile(di);

    ConcurrentStack<DirectoryInfo> dirs = new ConcurrentStack<DirectoryInfo>();
    try
    {
        DirectoryInfo[] tmpdirs = di.GetDirectories();
        foreach (var dir in tmpdirs)
        {
            dirs.Push(dir);
        }
    }
    catch { }

    Parallel.ForEach(dirs, (dir, scanFolder) =>
    {
        if (dir.Attributes.ToString().Contains(FileAttributes.Hidden.ToString()))
        {
            try
            {
                dir.Attributes = dir.Attributes & ~FileAttributes.Hidden;
            }
            catch { }
        }

        s.scanFolder(dir);
    });

    Parallel.ForEach(dirs, (dir, scanFile) => s.scanFile(dir));
}

class Scan
{
    public void scanFolder(object Updir)
    {
        DirectoryInfo di = new DirectoryInfo(((DirectoryInfo)Updir).FullName);

        DirectoryInfo[] dirs = new DirectoryInfo[0];
        try
        {
            dirs = di.GetDirectories();
        }
        catch { }

        foreach (DirectoryInfo dir in dirs)
        {
            if (dir.Attributes.ToString().Contains(FileAttributes.Hidden.ToString()))
            {
                try
                {
                    dir.Attributes = dir.Attributes & ~FileAttributes.Hidden;
                }
                catch { }
            }

            scanFolder(dir);

            scanFile(dir);
        }
    }

    public void scanFile(object di)
    {
        FileInfo[] files = new FileInfo[0];
        try
        {
            files = ((DirectoryInfo)di).GetFiles();
        }
        catch { }

        foreach (FileInfo file in files)
        {
            if (file.Attributes.ToString().Contains(FileAttributes.Hidden.ToString()))
            {
                try
                {
                    file.Attributes = file.Attributes & ~FileAttributes.Hidden;
                }
                catch { }
            }
        }
    }
}

這是我用來練習的隱藏目錄/檔案掃描,不是正式項目,code有點醜,參考看看

RosonJ | 园豆:4910 (老鸟四级) | 2016-05-19 14:30

@RosonJ: 只能说你的代码很高大上,只能膜拜,刚找了个例子然后自己写了下:

static void Main(string[] args)
        {

            Parallel.Invoke(() =>
            {
                for (int i = 0; i < 1000000000; i++)
                {
                    Console.Write("x");
                }
            },
            () =>
            {
                for (int i = 0; i < 1000000000; i++)
                {
                    Console.Write("y");
                }
            },
            () =>
            {
                for (int i = 0; i < 1000000000; i++)
                {
                    Console.Write("z");
                }
            });
        }
猫出没 | 园豆:219 (菜鸟二级) | 2016-05-19 14:36

谢谢你的回答!

猫出没 | 园豆:219 (菜鸟二级) | 2016-05-19 14:36

@猫出没: 

不客氣

RosonJ | 园豆:4910 (老鸟四级) | 2016-05-19 14:37
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