| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Markus Wanner <markus(at)bluegap(dot)ch> |
| Cc: | PostgreSQL-development Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: ProcSignalSlot vs. PGPROC |
| Date: | 2010-02-26 18:17:02 |
| Message-ID: | 1112.1267208222@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Markus Wanner <markus(at)bluegap(dot)ch> writes:
> do I understand correctly that a BackendId is just an index into the
> ProcSignalSlots array and not (necessarily) the same as the index into
> ProcArrayStruct's procs?
> If yes, could these be synchronized? Why is ProcSignalSlot not part of
> PGPROC at all? Both are shared memory structures per backend (plus
> NUM_AUXILIARY_PROCS). What am I missing?
It's easier to keep those modules separate. I believe also that there
are (or could be) processes that have entries in one array but not the
other.
regards, tom lane
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Gokulakannan Somasundaram | 2010-02-26 18:30:51 | Re: A thought on Index Organized Tables |
| Previous Message | Tom Lane | 2010-02-26 18:11:44 | Re: Avoiding bad prepared-statement plans. |