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twophase.h
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1 /*-------------------------------------------------------------------------
2  *
3  * twophase.h
4  * Two-phase-commit related 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/access/twophase.h
11  *
12  *-------------------------------------------------------------------------
13  */
14 #ifndef TWOPHASE_H
15 #define TWOPHASE_H
16 
17 #include "access/xlogdefs.h"
18 #include "access/xact.h"
19 #include "datatype/timestamp.h"
20 #include "storage/lock.h"
21 
22 /*
23  * GlobalTransactionData is defined in twophase.c; other places have no
24  * business knowing the internal definition.
25  */
27 
28 /* GUC variable */
30 
31 extern Size TwoPhaseShmemSize(void);
32 extern void TwoPhaseShmemInit(void);
33 
34 extern void AtAbort_Twophase(void);
35 extern void PostPrepare_Twophase(void);
36 
37 extern PGPROC *TwoPhaseGetDummyProc(TransactionId xid, bool lock_held);
39 
40 extern GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid,
42  Oid owner, Oid databaseid);
43 
44 extern void StartPrepare(GlobalTransaction gxact);
45 extern void EndPrepare(GlobalTransaction gxact);
47 
49  int *nxids_p);
50 extern void StandbyRecoverPreparedTransactions(void);
51 extern void RecoverPreparedTransactions(void);
52 
53 extern void CheckPointTwoPhase(XLogRecPtr redo_horizon);
54 
55 extern void FinishPreparedTransaction(const char *gid, bool isCommit);
56 
57 extern void PrepareRedoAdd(char *buf, XLogRecPtr start_lsn,
58  XLogRecPtr end_lsn, RepOriginId origin_id);
59 extern void PrepareRedoRemove(TransactionId xid, bool giveWarning);
60 extern void restoreTwoPhaseData(void);
61 #endif /* TWOPHASE_H */
void AtAbort_Twophase(void)
Definition: twophase.c:317
void restoreTwoPhaseData(void)
Definition: twophase.c:1777
void PostPrepare_Twophase(void)
Definition: twophase.c:357
void FinishPreparedTransaction(const char *gid, bool isCommit)
Definition: twophase.c:1399
uint32 TransactionId
Definition: c.h:508
void EndPrepare(GlobalTransaction gxact)
Definition: twophase.c:1060
int64 TimestampTz
Definition: timestamp.h:39
uint16 RepOriginId
Definition: xlogdefs.h:58
void PrepareRedoAdd(char *buf, XLogRecPtr start_lsn, XLogRecPtr end_lsn, RepOriginId origin_id)
Definition: twophase.c:2335
struct GlobalTransactionData * GlobalTransaction
Definition: twophase.h:26
unsigned int Oid
Definition: postgres_ext.h:31
void CheckPointTwoPhase(XLogRecPtr redo_horizon)
Definition: twophase.c:1695
char gid[GIDSIZE]
Definition: twophase.c:172
#define PGDLLIMPORT
Definition: c.h:1266
void TwoPhaseShmemInit(void)
Definition: twophase.c:252
void StartPrepare(GlobalTransaction gxact)
Definition: twophase.c:987
static char * buf
Definition: pg_test_fsync.c:67
void StandbyRecoverPreparedTransactions(void)
Definition: twophase.c:1920
GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid, TimestampTz prepared_at, Oid owner, Oid databaseid)
Definition: twophase.c:372
int BackendId
Definition: backendid.h:21
void RecoverPreparedTransactions(void)
Definition: twophase.c:1961
uint64 XLogRecPtr
Definition: xlogdefs.h:21
size_t Size
Definition: c.h:467
PGPROC * TwoPhaseGetDummyProc(TransactionId xid, bool lock_held)
Definition: twophase.c:878
TransactionId xid
Definition: twophase.c:165
TimestampTz prepared_at
Definition: twophase.c:154
void PrepareRedoRemove(TransactionId xid, bool giveWarning)
Definition: twophase.c:2405
BackendId TwoPhaseGetDummyBackendId(TransactionId xid, bool lock_held)
Definition: twophase.c:863
PGDLLIMPORT int max_prepared_xacts
Definition: twophase.c:117
bool StandbyTransactionIdIsPrepared(TransactionId xid)
Definition: twophase.c:1371
Definition: proc.h:95
TransactionId PrescanPreparedTransactions(TransactionId **xids_p, int *nxids_p)
Definition: twophase.c:1839
Size TwoPhaseShmemSize(void)
Definition: twophase.c:236