On Tue, Mar 22, 2016 at 1:56 PM, Amit Kapila <amit.kapil...@gmail.com> wrote:
> So as far as I can see there are two ways to resolve this issue, one is to
> retry generation of dsm name if CreateFileMapping returns EACCES and second
> is to append data_dir name to dsm name as the same is done for main shared
> memory, that will avoid the error to occur.  First approach has minor flaw
> that if CreateFileMapping returns EACCES due to reason other then duplicate
> dsm name which I am not sure is possible to identify, then we should report
> error instead try to regenerate the name
> Robert and or others, can you share your opinion on what is the best way to
> proceed for this issue.

For my 2c here, the approach using GetSharedMemName to identify the
origin of a dynamic shared memory segment looks more solid in terms of
robustness and collision handling. Retrying a segment is never going
to be completely water-proof.

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