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Refactor per-page logic common to all redo routines to a new function.

author Heikki Linnakangas <heikki.linnakangas@iki.fi>

2014年8月13日 12:39:08 +0000 (15:39 +0300)

committer Heikki Linnakangas <heikki.linnakangas@iki.fi>

Tue, 2 Sep 2014 12:10:28 +0000 (15:10 +0300)

commit f8f4227976a2cdb8ac7c611e49da03aa9e65e0d2

tree 92a7aa95ce72fbac48325761761821f8d7a742ed tree

parent 26f8b99b248aae989e63ca0969a746f30b0c8c21 commit | diff

Refactor per-page logic common to all redo routines to a new function.

Every redo routine uses the same idiom to determine what to do to a page:
check if there's a backup block for it, and if not read, the buffer if the
block exists, and check its LSN. Refactor that into a common function,
XLogReadBufferForRedo, making all the redo routines shorter and more
readable.

This has no user-visible effect, and makes no changes to the WAL format.

Reviewed by Andres Freund, Alvaro Herrera, Michael Paquier.

src/backend/access/gin/ginxlog.c diff | blob | blame | history

src/backend/access/gist/gistxlog.c diff | blob | blame | history

src/backend/access/heap/heapam.c diff | blob | blame | history

src/backend/access/nbtree/nbtxlog.c diff | blob | blame | history

src/backend/access/spgist/spgxlog.c diff | blob | blame | history

src/backend/access/transam/README diff | blob | blame | history

src/backend/access/transam/xlogutils.c diff | blob | blame | history

src/include/access/xlogutils.h diff | blob | blame | history

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