aboutsummaryrefslogtreecommitdiff
path: root/src/include/postmaster/bgwriter.h
blob: a72e31724c05b4c02815ac68c08001283b7908a7 (plain)
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
/*-------------------------------------------------------------------------
 *
 * bgwriter.h
 *	  Exports from postmaster/bgwriter.c.
 *
 * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
 *
 * $PostgreSQL: pgsql/src/include/postmaster/bgwriter.h,v 1.15 2010/01/02 16:58:08 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef _BGWRITER_H
#define _BGWRITER_H

#include "storage/block.h"
#include "storage/relfilenode.h"


/* GUC options */
extern int	BgWriterDelay;
extern int	CheckPointTimeout;
extern int	CheckPointWarning;
extern double CheckPointCompletionTarget;

extern void BackgroundWriterMain(void);

extern void RequestCheckpoint(int flags);
extern void CheckpointWriteDelay(int flags, double progress);

extern bool ForwardFsyncRequest(RelFileNode rnode, ForkNumber forknum,
					BlockNumber segno);
extern void AbsorbFsyncRequests(void);

extern Size BgWriterShmemSize(void);
extern void BgWriterShmemInit(void);

#endif   /* _BGWRITER_H */