From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Jeff Davis <pgsql(at)j-davis(dot)com> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: pg_filedump 9.3: checksums (and a few other fixes) |
Date: | 2013-06-14 00:09:38 |
Message-ID: | 21587.1371168578@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Jeff Davis <pgsql(at)j-davis(dot)com> writes:
> The patch is a bit ugly: I had to copy some code, and copy the entire
> checksum.c file (minus some Asserts, which don't work in an external
> program). Suggestions welcome.
What I propose we do about this is reduce backend/storage/page/checksum.c
to something like
#include "postgres.h"
#include "storage/checksum.h"
#include "storage/checksum_impl.h"
moving all the code currently in the file into a new .h file. Then,
any external programs such as pg_filedump can use the checksum code
by including checksum_impl.h. This is essentially the same thing we
did with the CRC support functionality some time ago.
Also, we have the cut-point between checksum.c and bufpage.c at the
wrong place. IMO we should move PageCalcChecksum16 in toto into
checksum.c (or really now into checksum_impl.h), because that and not
just checksum_block() is the functionality that is wanted.
regards, tom lane
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