Re: File conflict in Windows

Hi Valeri!

On 12 Feb 2007, at 00:12, Fine, Valeri wrote:

>> While the file is open in Root, I cannot delete it using Windows
>> explorer.
>
> Do you think it is unreasonable?
> There are two scenarios
> 1. Either you can not change (delete, write append ...) the file
> that had been open by some program
> or
> 2. You can, but that program should not try to access the file
> anymore or crash.
>
> The average Linux file system doesn't provide such level of the
> protection. I would like to call your attention that this is the
> feature of the Windows file system rather the concrete Windows
> application.
>

I just verified that ROOT v5.14.00b does "access; lstat; unlink; access; open" on the file, which is safe on all Unix-like systems, because the file created by open is independent from the one unlinked before. So, using TFile(..., "RECREATE") is a safe way of writing a new data set, irrespective of the fact whether the file is open in another process or not: the other process(es) will just see the old contents. It is a shame that Windows cannot cope with deleted open files.

Ciao,

                     Roland

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