重命名文件时出现错误32（另一个进程正在使用该文件）

时间：2011-08-19 04:32:56

标签： delphi delphi-2006 file-rename

我有一个Delphi 2006应用程序写入文件，然后定期将其重命名为一个序列名称，并创建一个新的，即

open file.dat
write a record to file.dat
close file.dat 
...   
open file.dat
write a record to file.dat
close file.dat  

rename file.dat to file20110818123456.dat

create file.dat

open file.dat
write a record to file.dat
close file.dat  
...

问题是有时重命名会因Error 32 - The process cannot access the file because it is being used by another process而失败。我正在检查重命名的目标不存在。就好像写入记录后文件的关闭不会立即发生。我在重命名过程中添加了一个循环以稍微睡一觉并再次尝试多达10次，但这没有用。 

function RenameFileAtAllCosts (const OldFileID : TFilename ;
                               const NewFileID : TFilename ;
                               out   ErrorCode : Integer) : boolean ;

const
    MaxRenameAttempts  = 10 ;

var
    RenameAttempts     : integer ;

begin
Result := FileExists (OldFileID) ;

if (Result = true) then
    begin
    if FileExists (NewFileID) then
        begin
        Result := DeleteFile (PChar (NewFileID)) ;
        end ;

    if (Result = true) then
        begin
        Result := (not FileExists (NewFileID)) ;
        end ;

    if (Result = true) then
        begin
        RenameAttempts := 0 ;
        repeat
            SysUtils.Sleep (50) ;   
            Result := RenameFile (OldFileID, NewFileID) ;
            inc (RenameAttempts)
        until (Result or (RenameAttempts >= MaxRenameAttempts)) ;
        end ;
    end ;
if (not Result) then
    begin
    ErrorCode := GetLastError ;
    end ;
end ;

*附加信息*

这是相关磁盘I / O的ProcMon日志，每个块前面都有相关的Pascal源或伪代码

open file.dat
write a record to file.dat
close file.dat 

5:45:27.1718325 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Desired Access: Generic Read/Write, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, AllocationSize: n/a, OpenResult: Opened
5:45:27.1719739 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,208, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:27.1720475 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,208, Length: 28, Priority: Normal
5:45:27.1721403 PM  APP.exe 1276    CloseFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS

if FileExists (NewFileID) then    // before call to RenameFileAtAllCosts
    begin

5:45:27.8630005 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP20110819054527.DAT    NAME NOT FOUND  Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a

if DeleteFile (NewFileID) then    // before call to RenameFileAtAllCosts
    begin

5:45:27.8634050 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP20110819054527.DAT    NAME NOT FOUND  Desired Access: Read Attributes, Delete, Disposition: Open, Options: Non-Directory File, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a

Result := FileExists (OldFileID) ;

5:45:27.8640878 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
5:45:27.8641684 PM  APP.exe 1276    QueryBasicInformationFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS CreationTime: 2/08/2011 7:45:59 PM, LastAccessTime: 19/08/2011 4:25:33 PM, LastWriteTime: 19/08/2011 5:45:27 PM, ChangeTime: 19/08/2011 5:45:27 PM, FileAttributes: A
5:45:27.8641902 PM  APP.exe 1276    CloseFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS

    if FileExists (NewFileID) then
        begin  

5:45:27.8648698 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP20110819054527.DAT    NAME NOT FOUND  Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a


    if (Result = true) then
        begin
        Result := (not FileExists (NewFileID)) ;
        end ;

5:45:27.8656780 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP20110819054527.DAT    NAME NOT FOUND  Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a

        RenameAttempts := 0 ;
        repeat
            SysUtils.Sleep (50) ;   
            Result := RenameFile (OldFileID, NewFileID) ;
            inc (RenameAttempts)
        until (Result or (RenameAttempts >= MaxRenameAttempts)) ;

5:45:27.9211195 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:27.9834427 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:28.0459285 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:28.1084086 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:28.1710646 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:28.2335139 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:28.2959037 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:28.3584062 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:28.4209304 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
5:45:28.4834629 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SHARING VIOLATION   Desired Access: Read Attributes, Delete, Synchronize, Disposition: Open, Options: Synchronous IO Non-Alert, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a


open file.dat
write several records to file.dat
close file.dat 

5:45:28.4899722 PM  APP.exe 1276    CreateFile  C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Desired Access: Generic Read/Write, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, AllocationSize: n/a, OpenResult: Opened
5:45:28.4901002 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,236, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4901636 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,236, Length: 28, Priority: Normal
5:45:28.4902365 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,264, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4903031 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,264, Length: 28, Priority: Normal
5:45:28.4903517 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,292, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4905200 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,292, Length: 28, Priority: Normal
5:45:28.4905917 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,320, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4906633 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,320, Length: 28, Priority: Normal
5:45:28.4907120 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,348, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4907747 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,348, Length: 28, Priority: Normal
5:45:28.4908214 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,376, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4908841 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,376, Length: 28, Priority: Normal
5:45:28.4909308 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,404, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4909929 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,404, Length: 28, Priority: Normal
5:45:28.4910396 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,432, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4911023 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,432, Length: 28, Priority: Normal
5:45:28.4911491 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,460, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4912118 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,460, Length: 28, Priority: Normal
5:45:28.4912578 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,488, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4913206 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,488, Length: 28, Priority: Normal
5:45:28.4913673 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,516, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4914300 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,516, Length: 28, Priority: Normal
5:45:28.4914761 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,544, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4915388 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,544, Length: 28, Priority: Normal
5:45:28.4915855 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,572, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4916482 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,572, Length: 28, Priority: Normal
5:45:28.4916936 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,600, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4917570 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,600, Length: 28, Priority: Normal
5:45:28.4918043 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,628, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4919003 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,628, Length: 28, Priority: Normal
5:45:28.4919483 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,656, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4920110 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,656, Length: 28, Priority: Normal
5:45:28.4920577 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,684, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4921205 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,684, Length: 28, Priority: Normal
5:45:28.4921672 PM  APP.exe 1276    QueryStandardInformationFile    C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS AllocationSize: 57,344, EndOfFile: 54,712, NumberOfLinks: 1, DeletePending: False, Directory: False
5:45:28.4922299 PM  APP.exe 1276    WriteFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS Offset: 54,712, Length: 28, Priority: Normal
5:45:28.4922843 PM  APP.exe 1276    CloseFile   C:\Users\Public\Documents\APP\Datafile\APP.DAT  SUCCESS

*更新*

我想我已经钉了它。我下载了handle.exe并运行它。进程资源管理器始终显示没有匹配APP.DAT的句柄，但handle.exe实用程序显示PID 4（系统）拥有的句柄列表，其中APP.DAT作为文件名。我在我的OP中没有提到的是，同一个应用程序在另一个网络机器上以辅助“监视器”模式运行，它不会写入APP * .DAT文件，而只是从它们读取。 “啊哈！”当我意识到问题只发生在监视器应用程序也在运行时，并且句柄泄漏显示属于“系统”进程时 - 可能是在从网络机器打开文件时创建了句柄。

有时监控应用程序被拒绝访问该文件（始终使用错误998 - 由于某种原因对内存位置的访问无效），并且错误路径未关闭句柄。从那时起，应用程序的主要实例仍然能够读取和写入文件APP.DAT但重命名失败。确保文件在错误上关闭似乎已修复它。

指向“handle.exe”的指针是关键，以及我仍然可以用另一个打开的句柄写入文件的知识，但重命名会失败。感谢大家的贡献。

5 个答案:

答案 0 :(得分：4)

在我看来，问题不是目标文件，而是源文件......确保源文件上的句柄已关闭，这就是问题所在。

答案 1 :(得分：4)

调试此类问题的有用方法（无论如何）是使用Process Explorer的“查找/查找句柄或DLL”功能搜索文件名。如果特定文件名是打开的＆amp;独家它将揭示哪个程序持有它。如果是你的，你可以检查手柄是否关闭。如果不是你的，你可能要么只是编写一个小的等待（Windows有时会花时间去处理事情），或者强行解锁文件（我在这里有一个小程序用EXPLORER.EXE来做，因为它会当我使用它时，对文件进行了大量的锁定。）

HTH。

答案 2 :(得分：1)

我敢打赌，你对GetLastError的调用正在返回与此例程无关的早期API调用的错误代码。据我所知（我没有手头的资料）FileExists没有设置错误代码。但是如果第一次调用FileExists失败，那么你继续调用GetLastError。

答案 3 :(得分：0)

如果你在一秒左右后重试重命名会有帮助吗？也许Windows太慢而无法赶上。

答案 4 :(得分：0)

值得一提的是.DAT文件是由一些防病毒工具扫描的。因此，您可能会发现关闭文件，然后AV打开它进行扫描，当它仍然打开时，您正在尝试对其进行操作。当然你不能因为AV打开它。

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