Re: BUG #4738: Cannot reconnect to shared memory

Has there been any progress on this?

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Jonathan Barnhart wrote:
>
> The following bug has been logged online:
>
> Bug reference: 4738
> Logged by: Jonathan Barnhart
> Email address: jdbarnhart(at)yahoo(dot)com
> PostgreSQL version: 8.3.7
> Operating system: WinXP, Vista
> Description: Cannot reconnect to shared memory
> Details:
>
> This bug seems to have been reintroduced between versions 8.3.4 and 8.3.7.
> It is basically a race condition when the fork emulation for Windows is
> used. The problem is that the side of the "fork" that creates the shared
> memory to emulate the Unix fork is often executed AFTER the logic in the
> "forked" process that connects to the shared memory.
>
> The obvious thing that has to be done is to create the shared memory object
> and THEN spawn the child processes. Unfortunately, the logic in that area
> is not entirely straightforward with a number of dependancies.
>
> I'm working on patching this, but so far I have had issues with screwing up
> other order dependant code.
>
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Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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