[vtk-developers] Python Wrapping fails in master build.

David Gobbi david.gobbi at gmail.com
Fri Sep 28 10:32:29 EDT 2018

On Thu, Sep 27, 2018 at 11:02 PM David Gobbi <david.gobbi at gmail.com> wrote:

> Thanks, Andrew.  So now we know that errno is EACCES, which corresponds to
> a Windows filesystem error of ERROR_ACCESS_DENIED
> or ERROR_SHARING_VIOLATION.  I strongly suspect the latter.
> So there are two options:
> 1) retry a few times (e.g. 5 times over 5 seconds), in the hope that the
> sharing violation will clear up, which it probably will because antivirus
> software only takes a fraction of a second to scan a small file.
> 2) write to a temporary file which is then renamed to ..Python.cxx (in
> which case the 'rename' operation has to retry if it encounters a sharing
> violation).
> The latter is what CMake does (its "cmSystemTools::RenameFile()" function
> retries, so cmake doesn't seem to have any magic that makes retries
> unnecessary).
> I'm tempted to go with (1) due to its simplicity, and because if we used a
> random temporary file we'd have to find some way to remove that file if
> vtkWrapPython didn't exit cleanly.

Another option that might work:

3) If the output file already exists, then delete it with the Windows
DeleteFile() function before calling fopen() to create a new file with the
same name.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://public.kitware.com/pipermail/vtk-developers/attachments/20180928/4251f24e/attachment.html>

More information about the vtk-developers mailing list