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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*-------------------------------------------------------------------------
*
* lmgr.h--
* POSTGRES lock manager definitions.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: lmgr.h,v 1.14 1998/08/01 15:26:36 vadim Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef LMGR_H
#define LMGR_H
#include <storage/lock.h>
#include <utils/rel.h>
#include <catalog/catname.h>
/*
* This was moved from pladt.h for the new lock manager. Want to obsolete
* all of the old code.
*/
typedef struct LockRelId
{
Oid relId; /* a relation identifier */
Oid dbId; /* a database identifier */
} LockRelId;
#ifdef LowLevelLocking
typedef struct LockInfoData
{
LockRelId lockRelId;
bool lockHeld[MAX_LOCKMODES]; /* on table level */
} LockInfoData;
#else
typedef struct LockInfoData
{
LockRelId lockRelId;
} LockInfoData;
#endif
typedef LockInfoData *LockInfo;
#define LockInfoIsValid(lockinfo) PointerIsValid(lockinfo)
extern void RelationInitLockInfo(Relation relation);
extern void RelationSetLockForDescriptorOpen(Relation relation);
extern void RelationSetLockForRead(Relation relation);
extern void RelationUnsetLockForRead(Relation relation);
extern void RelationSetLockForWrite(Relation relation);
extern void RelationUnsetLockForWrite(Relation relation);
/* used in vaccum.c */
extern void
RelationSetLockForWritePage(Relation relation,
ItemPointer itemPointer);
/* used in nbtpage.c, hashpage.c */
extern void
RelationSetSingleWLockPage(Relation relation,
ItemPointer itemPointer);
extern void
RelationUnsetSingleWLockPage(Relation relation,
ItemPointer itemPointer);
extern void
RelationSetSingleRLockPage(Relation relation,
ItemPointer itemPointer);
extern void
RelationUnsetSingleRLockPage(Relation relation,
ItemPointer itemPointer);
extern void RelationSetRIntentLock(Relation relation);
extern void RelationUnsetRIntentLock(Relation relation);
extern void RelationSetWIntentLock(Relation relation);
extern void RelationUnsetWIntentLock(Relation relation);
/* single.c */
extern bool SingleLockReln(LockInfo lockinfo, LOCKMODE lockmode, int action);
extern bool
SingleLockPage(LockInfo lockinfo, ItemPointer tidPtr,
LOCKMODE lockmode, int action);
/* proc.c */
extern void InitProcGlobal(IPCKey key);
#endif /* LMGR_H */
|
