多线程 Move 文件，进程占用，如何解决？

[renjunfeng]

private static Object lock1 = new object();
private static Object lock2 = new object();
static void Main(string[] args)
{
Thread thread_write = new Thread(new ThreadStart(Write));
thread_write.Start();

Thread thread_copy = new Thread(new ThreadStart(Move));
thread_copy.Start();

Thread thread_move = new Thread(new ThreadStart(Move));
thread_move.Start();

}
private static void Write()
{
while (true)
{
System.Threading.Thread.Sleep(1000);
File.WriteAllText(Path.Combine(@"D:\ConsoleAppWrite", Guid.NewGuid().ToString() + ".txt"), "Write......");
}
}
private static void Copy()
{
while (true)
{
FileInfo[] file_infos = SortFiles(@"D:\ConsoleAppWrite", "*.txt");
foreach (FileInfo fl in file_infos)
CopyFileToFolder(fl, @"D:\ConsoleAppCopy");
}
}
private static void Move()
{
while (true)
{
FileInfo[] file_infos = SortFiles(@"D:\ConsoleAppWrite", "*.txt");
foreach (FileInfo fl in file_infos)
MoveFileToFolder(fl, @"D:\ConsoleAppMove");
}
}
#region Directory Utilities
public static FileInfo[] SortFiles(string folder, string fileFilter)
{
if (Directory.Exists(folder))
{
DirectoryInfo dirInfo = new DirectoryInfo(folder);
FileInfo[] sourceFileInfo = dirInfo.GetFiles(fileFilter, SearchOption.TopDirectoryOnly);
Array.Sort(sourceFileInfo, new FileCreateTimeComparer());
return sourceFileInfo;
}
return new FileInfo[] { };
}

public static FileInfo MoveFileToFolder(FileInfo fileInfo, string destFolder)
{
string newFileFullName = Path.Combine(destFolder, fileInfo.Name);
lock (lock1)
{
if (!File.Exists(newFileFullName))
{
File.Move(fileInfo.FullName, Path.Combine(destFolder, fileInfo.Name));
}
}
return new FileInfo(newFileFullName);
}

public static void CopyFileToFolder(FileInfo fileInfo, params string[] destFolders)
{
if (destFolders != null)
{
foreach (string destFolder in destFolders)
{
string newFileFullName = Path.Combine(destFolder, fileInfo.Name);
lock (lock2)
{
if (!File.Exists(newFileFullName))
{
File.Copy(fileInfo.FullName, Path.Combine(destFolder, fileInfo.Name));
}
}
}
}
}

public static string GetBakFolder(string currentFolder, DateTime fileCreateTime)
{
string bakFolder = string.Format(@"{0}\{1}\{2}\{3}", currentFolder, fileCreateTime.Year, fileCreateTime.Month, fileCreateTime.Day);
if (!Directory.Exists(bakFolder))
{
Directory.CreateDirectory(bakFolder);
}
return bakFolder;
}
#endregion

[renjunfeng]

哈哈！能lock的地方都 lock了，就是不行！

[ycproc]

[Quote=引用 6 楼 timzhufaith 的回复:]

多lock几个地方。。。明显是同步问题
[/Quote]
还lock 越多越出问题

先检查执行顺序

[renjunfeng]

咋就没有人 提个 解决方案呢！@我的测试代码以上！实在是找不到办法

[winner2050]

多线程对于磁盘的文件移动操作的意义在于，当文件被占用或者不存在的情况下移动就会异常，这样就很慢了。

现在你把多线程给磁盘操作带来新的异常。

[bdmh]

你连个互斥都么有，肯定出错多个线程同时搞一个目录（文件），能不出错吗

[renjunfeng]

lock (lock1)
{
if (!File.Exists(newFileFullName))
{
File.Move(fileInfo.FullName, Path.Combine(destFolder, fileInfo.Name));
}

不起作用，如何互斥？

[bdmh]

你的互斥应该放到Move函数中，否则，其他线程会对你获取的文件信息进行更改

[renjunfeng]

private static void Move()
{
while (true)
{
lock (lock1)
{
FileInfo[] file_infos = SortFiles(@"D:\ConsoleAppWrite", "*.txt");
foreach (FileInfo fl in file_infos)
MoveFileToFolder(fl, @"D:\ConsoleAppMove");
}
}
}
照样是： 进程占用，不能解决问题！

[garfieldzf]

ManualResetEvent

[TimZhuFaith]

多lock几个地方。。。明显是同步问题