Re: .ready and .done files considered harmful - Mailing list pgsql-hackers

On Wed, Jul 28, 2021 at 6:48 AM Dipesh Pandit <dipesh.pandit@gmail.com> wrote:
> As of now shared memory is not attached to the archiver. Archiver cannot
> access ThisTimeLineID or a flag available in shared memory.

If that is true, why are there functions PgArchShmemSize() and
PgArchShmemInit(), and how does this statement in PgArchiverMain()
manage not to core dump?

    /*
     * Advertise our pgprocno so that backends can use our latch to wake us up
     * while we're sleeping.
     */
    PgArch->pgprocno = MyProc->pgprocno;

I think what you are saying is true before v14, but not in v14 and master.

-- 
Robert Haas
EDB: http://www.enterprisedb.com