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plurals

PO
primarykey
Id
6247249
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-06-06T02:09:00.193
FavoriteCount
0
LastActivityDate
2011-06-06T02:15:08.553
LastEditDate
2011-06-06T02:15:08.553
LastEditorUserId
182748
OwnerUserId
182748
ParentId
6247148
PostTypeId
2
Score
3
ViewCount
0
LastEditorDisplayName
text
Body
A bit of a refresher from the manpage of on <code>tmpfile()</code>, which returns a <code>FILE*</code>: <blockquote>The file will be automatically deleted when it is closed or the program terminates.</blockquote> My verdict for this issue: Deleting a file on Windows is weird. When you delete a file on Windows, for as long as something holds a handle, you can't call <code>CreateFile</code> on something with the same absolute path, otherwise it will fail with the NT error code <code>STATUS_DELETE_PENDING</code>, which gets mapped to the Win32 code <code>ERROR_ACCESS_DENIED</code>. This is probably where <code>EPERM</code> in <code>errno</code> is coming from. You can confirm this with a tool like Sysinternals Process Monitor. My guess is that CRT somehow wound up creating a file that has the same name as something it's used before. I've sometimes witnessed that deleting files on Windows can appear asynchronous because some other process (sometimes even an antivirus product, in reaction to the fact that you've just closed a delete-on-close handle...) will leave a handle open to the file, so for some timing window you will see a visible file that you can't get a handle to without hitting delete pending/access denied. Or, it could be that <code>tmpfile</code> has simply chosen a filename that some other process is working on. To avoid this sort of thing you might want to consider another mechanism for temp files... For example a function like Win32 <code>GetTempFileName</code> allows you to create your own prefix which might make a collision less likely. That function appears to resolve race conditions by retrying if a create fails with "already exists", so be careful about deleting the temp filenames that thing generates - deleting the file cancels your rights to use it concurrently with other processes/threads.
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PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POtmpfile() on windows 7 x64
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 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USasveikau
UserOwnerUserId
1. USasveikau
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PostsAcceptedAnswerId
1. POtmpfile() on windows 7 x64
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1. VO
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2. VO
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3. VO
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1. This table or related slice is empty.

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