From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
Cc: | PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org> |
Subject: | Re: Clog handling on exec'ed backend |
Date: | 2003-05-03 02:03:59 |
Message-ID: | 11399.1051927439@sss.pgh.pa.us |
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Lists: | pgsql-patches |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> It basically makes one of the Clog data structures into a shared memory
> area when using exec (EXEC_BACKEND is defined). It passes all the
> regression/initdb tests on Unix.
It would be cleaner to make the array of LWLockIds part of ClogCtlData,
if you're going to do it that way. I have doubts that pushing all
LWLockIds into shared memory is a feasible solution, however.
Out of curiosity: have you actually tested any of this Windows code
you're proposing to commit? A lot of it looks to me like it's not
gonna work --- stuff is getting done too soon or too late. For
example, I don't see how a backend is going to read GUC variables
when it doesn't yet know where the data directory is.
regards, tom lane
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