Hmm. Maybe I am asking a stupid question here. . .but are you talking about having a file opened multiple times *within* the same executable or in different executables?
Reason I ask is that I think the former problem is what the comment in H5Fopen is referring to but your inquiy regarding 'locking' seems to apply to the latter case. Mark From: Hdf-forum <[email protected]<mailto:[email protected]>> on behalf of David <[email protected]<mailto:[email protected]>> Reply-To: HDF Users Discussion List <[email protected]<mailto:[email protected]>> Date: Monday, November 16, 2015 9:46 AM To: HDF Users Discussion List <[email protected]<mailto:[email protected]>> Subject: [Hdf-forum] Multiply Opened Files I found this in the reference manual about H5Fopen(): "In some cases, such as files on a local Unix file system, the HDF5 library can detect that a file is multiply opened and will maintain coherent access among the file identifiers" Does HDF5 maintain multi-open coherent access on Windows also? Ideally I'd like to have the file locked so that multiple opens are not possible but I can't figure out a way to do that on Windows. Something like the flock() method for Unix I've seen on this forum would be fine but I only see file locking available via CreateFile() in the Windows API. - David
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