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Refactor to create generic WAL page read callback

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Previously we didn’t have a generic WAL page read callback function,
surprisingly. Logical decoding has logical_read_local_xlog_page(), which was
actually generic, so move that to xlogfunc.c and rename to
read_local_xlog_page().
Maintain logical_read_local_xlog_page() so existing callers still work.

As requested by Michael Paquier, Alvaro Herrera and Andres Freund
This commit is contained in:
Simon Riggs
2016-01-20 17:18:58 -08:00
parent 45be99f8cd
commit 422a55a687
3 changed files with 172 additions and 155 deletions
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3
src/include/access/xlogutils.h
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@@ -47,4 +47,7 @@ extern Buffer XLogReadBufferExtended(RelFileNode rnode, ForkNumber forknum,
extern Relation CreateFakeRelcacheEntry(RelFileNode rnode);
extern void FreeFakeRelcacheEntry(Relation fakerel);
extern int read_local_xlog_page(XLogReaderState *state, XLogRecPtr targetPagePtr,
int reqLen, XLogRecPtr targetRecPtr, char *cur_page, TimeLineID *pageTLI);
#endif