Re: Re: [PATCH v2 0/4] make open/unlink failures user friendly on windows using retry/abort

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Hi,

On Sun, Nov 07, 2010 at 04:49:20PM +0100, Johannes Sixt wrote:
> On Sonntag, 7. November 2010, Heiko Voigt wrote:
> > j6t: I have not changed your error code in mingw_rename since you
> > explicitely compare with the windows error code ERROR_ACCESS_DENIED and
> > do not use the err_win_to_posix() function. Did you do this on purpose or
> > should I also refer to ERROR_SHARING_VIOLATION ?
> 
> IIRC, I dumped the error code before I implemented the retry logic, and the 
> error was ERROR_ACCESS_DENIED. Did you verify that the occasions where you 
> want to retry the operations indeed fail due to ERROR_SHARING_VIOLATION, or 
> do you trust the documentation?

I tested this for my use case which is described by the manual testing
script[1]. I ran it once to create the test structure and then from
inside the test repository

	./../block_read 5000 file

and manually checked out the other branch in parallel. In this situation
git will stop with the retry question. But I am not sure which use case you
where addressing. Do you have a script or some information to reproduce?

> In any case, it is better to check for the Windows error code (which ever you 
> finally choose) rather than errno, IMO.

I agree because that should give us more fine grained control and since in
err_win_to_posix() many codes are mapped to EACCES.

Cheers Heiko

[1] http://groups.google.com/group/msysgit/msg/fcad5f1455b263ca 
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