1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*
* xlogutils.h
*
* Utilities for replaying WAL records.
*
* Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/access/xlogutils.h
*/
#ifndef XLOG_UTILS_H
#define XLOG_UTILS_H
#include "access/xlog.h"
#include "storage/bufmgr.h"
extern bool XLogHaveInvalidPages(void);
extern void XLogCheckInvalidPages(void);
extern void XLogDropRelation(RelFileNode rnode, ForkNumber forknum);
extern void XLogDropDatabase(Oid dbid);
extern void XLogTruncateRelation(RelFileNode rnode, ForkNumber forkNum,
BlockNumber nblocks);
/* Result codes for XLogReadBufferForRedo[Extended] */
typedef enum
{
BLK_NEEDS_REDO, /* changes from WAL record need to be applied */
BLK_DONE, /* block is already up-to-date */
BLK_RESTORED, /* block was restored from a full-page image */
BLK_NOTFOUND /* block was not found (and hence does not need to be
* replayed) */
} XLogRedoAction;
extern XLogRedoAction XLogReadBufferForRedo(XLogRecPtr lsn, XLogRecord *record,
int block_index, RelFileNode rnode, BlockNumber blkno,
Buffer *buf);
extern XLogRedoAction XLogReadBufferForRedoExtended(XLogRecPtr lsn,
XLogRecord *record, int block_index,
RelFileNode rnode, ForkNumber forkno,
BlockNumber blkno,
ReadBufferMode mode, bool get_cleanup_lock,
Buffer *buf);
extern Buffer XLogReadBuffer(RelFileNode rnode, BlockNumber blkno, bool init);
extern Buffer XLogReadBufferExtended(RelFileNode rnode, ForkNumber forknum,
BlockNumber blkno, ReadBufferMode mode);
extern Relation CreateFakeRelcacheEntry(RelFileNode rnode);
extern void FreeFakeRelcacheEntry(Relation fakerel);
#endif
|
