blob: 15f376ec5ed7afcabd32340cea0fb147f9895350 (
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
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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/*-------------------------------------------------------------------------
*
* xact.h--
* postgres transaction system header
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: xact.h,v 1.1.1.1 1996/07/09 06:21:09 scrappy Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef XACT_H
#define XACT_H
#include <signal.h>
#include "storage/ipc.h"
#include "miscadmin.h"
#include "utils/portal.h"
#include "utils/elog.h"
#include "utils/mcxt.h"
#include "utils/nabstime.h"
/* ----------------
* transaction state structure
* ----------------
*/
typedef struct TransactionStateData {
TransactionId transactionIdData;
CommandId commandId;
AbsoluteTime startTime;
int state;
int blockState;
} TransactionStateData;
/* ----------------
* transaction states
* ----------------
*/
#define TRANS_DEFAULT 0
#define TRANS_START 1
#define TRANS_INPROGRESS 2
#define TRANS_COMMIT 3
#define TRANS_ABORT 4
#define TRANS_DISABLED 5
/* ----------------
* transaction block states
* ----------------
*/
#define TBLOCK_DEFAULT 0
#define TBLOCK_BEGIN 1
#define TBLOCK_INPROGRESS 2
#define TBLOCK_END 3
#define TBLOCK_ABORT 4
#define TBLOCK_ENDABORT 5
typedef TransactionStateData *TransactionState;
/* ----------------
* extern definitions
* ----------------
*/
extern int TransactionFlushEnabled();
extern void SetTransactionFlushEnabled(bool state);
extern bool IsTransactionState(void);
extern bool IsAbortedTransactionBlockState(void);
extern void OverrideTransactionSystem(bool flag);
extern TransactionId GetCurrentTransactionId(void);
extern CommandId GetCurrentCommandId(void);
extern AbsoluteTime GetCurrentTransactionStartTime(void);
extern bool TransactionIdIsCurrentTransactionId(TransactionId xid);
extern bool CommandIdIsCurrentCommandId(CommandId cid);
extern void ClearCommandIdCounterOverflowFlag(void);
extern void CommandCounterIncrement(void);
extern void InitializeTransactionSystem(void);
extern void AtStart_Cache(void);
extern void AtStart_Locks(void);
extern void AtStart_Memory(void);
extern void RecordTransactionCommit(void);
extern void AtCommit_Cache(void);
extern void AtCommit_Locks(void);
extern void AtCommit_Memory(void);
extern void RecordTransactionAbort(void);
extern void AtAbort_Cache(void);
extern void AtAbort_Locks(void);
extern void AtAbort_Memory(void);
extern void StartTransaction(void);
extern bool CurrentXactInProgress(void);
extern void CommitTransaction(void);
extern void AbortTransaction(void);
extern void StartTransactionCommand(void);
extern void CommitTransactionCommand(void);
extern void AbortCurrentTransaction(void);
extern void BeginTransactionBlock(void);
extern void EndTransactionBlock(void);
extern void AbortTransactionBlock(void);
extern bool IsTransactionBlock();
extern void UserAbortTransactionBlock();
extern TransactionId DisabledTransactionId;
/* defined in xid.c */
extern bool TransactionIdIsValid(TransactionId transactionId);
extern void StoreInvalidTransactionId(TransactionId *destination);
extern void TransactionIdStore(TransactionId transactionId,
TransactionId *destination);
extern bool TransactionIdEquals(TransactionId id1, TransactionId id2);
extern bool TransactionIdIsLessThan(TransactionId id1, TransactionId id2);
extern void TransactionIdIncrement(TransactionId *transactionId);
extern void TransactionIdAdd(TransactionId *xid, int value);
#endif /* XACT_H */
|
