On 11/07/18 04:16, Thomas Munro wrote:
On Tue, Jul 10, 2018 at 11:39 PM, Heikki Linnakangas <hlinn...@iki.fi> wrote:
I don't have a FreeBSD machine at hand, so I didn't try fixing that
patch.


I updated the FreeBSD version to use the header test approach you
showed, and pushed that too.  FWIW the build farm has some FreeBSD
animals with and without PROC_PDEATHSIG_CTL.

Thanks!

I suppose it's possibly that we might want to reconsider the choice of
signal in the future (SIGINFO or SIGPWR).

We could reuse SIGUSR1 for this. If we set the flag in SIGUSR1 handler, then some PostmasterIsAlive() calls would take the slow path unnecessarily, but it would probably be OK. The slow path isn't that slow. But using SIGINFO/SIGPWR seems fine.

- Heikki

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