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md.h
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1 /*-------------------------------------------------------------------------
2  *
3  * md.h
4  * magnetic disk storage manager public interface declarations.
5  *
6  *
7  * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
8  * Portions Copyright (c) 1994, Regents of the University of California
9  *
10  * src/include/storage/md.h
11  *
12  *-------------------------------------------------------------------------
13  */
14 #ifndef MD_H
15 #define MD_H
16 
17 #include "storage/block.h"
18 #include "storage/relfilenode.h"
19 #include "storage/smgr.h"
20 #include "storage/sync.h"
21 
22 /* md storage manager functionality */
23 extern void mdinit(void);
24 extern void mdopen(SMgrRelation reln);
25 extern void mdclose(SMgrRelation reln, ForkNumber forknum);
26 extern void mdcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo);
27 extern bool mdexists(SMgrRelation reln, ForkNumber forknum);
28 extern void mdunlink(RelFileNodeBackend rnode, ForkNumber forknum, bool isRedo);
29 extern void mdextend(SMgrRelation reln, ForkNumber forknum,
30  BlockNumber blocknum, char *buffer, bool skipFsync);
31 extern void mdprefetch(SMgrRelation reln, ForkNumber forknum,
32  BlockNumber blocknum);
33 extern void mdread(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
34  char *buffer);
35 extern void mdwrite(SMgrRelation reln, ForkNumber forknum,
36  BlockNumber blocknum, char *buffer, bool skipFsync);
37 extern void mdwriteback(SMgrRelation reln, ForkNumber forknum,
38  BlockNumber blocknum, BlockNumber nblocks);
39 extern BlockNumber mdnblocks(SMgrRelation reln, ForkNumber forknum);
40 extern void mdtruncate(SMgrRelation reln, ForkNumber forknum,
41  BlockNumber nblocks);
42 extern void mdimmedsync(SMgrRelation reln, ForkNumber forknum);
43 
44 extern void ForgetDatabaseSyncRequests(Oid dbid);
45 extern void DropRelationFiles(RelFileNode *delrels, int ndelrels, bool isRedo);
46 
47 /* md sync callbacks */
48 extern int mdsyncfiletag(const FileTag *ftag, char *path);
49 extern int mdunlinkfiletag(const FileTag *ftag, char *path);
50 extern bool mdfiletagmatches(const FileTag *ftag, const FileTag *candidate);
51 
52 #endif /* MD_H */
int mdsyncfiletag(const FileTag *ftag, char *path)
Definition: md.c:1280
bool mdexists(SMgrRelation reln, ForkNumber forknum)
Definition: md.c:161
void mdwriteback(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum, BlockNumber nblocks)
Definition: md.c:560
void mdextend(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum, char *buffer, bool skipFsync)
Definition: md.c:388
void mdunlink(RelFileNodeBackend rnode, ForkNumber forknum, bool isRedo)
Definition: md.c:278
void mdinit(void)
Definition: md.c:148
uint32 BlockNumber
Definition: block.h:31
unsigned int Oid
Definition: postgres_ext.h:31
void mdimmedsync(SMgrRelation reln, ForkNumber forknum)
Definition: md.c:891
void DropRelationFiles(RelFileNode *delrels, int ndelrels, bool isRedo)
Definition: md.c:1001
void mdclose(SMgrRelation reln, ForkNumber forknum)
Definition: md.c:506
void ForgetDatabaseSyncRequests(Oid dbid)
Definition: md.c:983
void mdopen(SMgrRelation reln)
Definition: md.c:495
void mdtruncate(SMgrRelation reln, ForkNumber forknum, BlockNumber nblocks)
Definition: md.c:794
int mdunlinkfiletag(const FileTag *ftag, char *path)
Definition: md.c:1311
ForkNumber
Definition: relpath.h:40
void mdwrite(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum, char *buffer, bool skipFsync)
Definition: md.c:674
bool mdfiletagmatches(const FileTag *ftag, const FileTag *candidate)
Definition: md.c:1330
void mdprefetch(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum)
Definition: md.c:537
BlockNumber mdnblocks(SMgrRelation reln, ForkNumber forknum)
Definition: md.c:739
void mdcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo)
Definition: md.c:178
void mdread(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum, char *buffer)
Definition: md.c:609
Definition: sync.h:45