Re: atexit_callback can be a net negative - Mailing list pgsql-hackers

On 03/07/2014 04:23 PM, Florian Weimer wrote:
> On 03/07/2014 06:03 AM, Tom Lane wrote:
>
>> In the bug thread I proposed making atexit_callback check whether getpid()
>> still matches MyProcPid.  If it doesn't, then presumably we inherited the
>> atexit callback list, along with the value of MyProcPid, from some parent
>> backend process whose elbow we should not joggle.  Can anyone see a flaw
>> in that?
>
> There's the PID reuse problem.  Forking twice (with a delay) could end
> up with the same PID as MyProcPid.

Not if the parent process is still running.

- Heikki