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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) 1996-2017, 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 "datatype/timestamp.h"
19 #include "storage/lock.h"
20 
21 /*
22  * GlobalTransactionData is defined in twophase.c; other places have no
23  * business knowing the internal definition.
24  */
26 
27 /* GUC variable */
28 extern int max_prepared_xacts;
29 
30 extern Size TwoPhaseShmemSize(void);
31 extern void TwoPhaseShmemInit(void);
32 
33 extern void AtAbort_Twophase(void);
34 extern void PostPrepare_Twophase(void);
35 
38 
39 extern GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid,
41  Oid owner, Oid databaseid);
42 
43 extern void StartPrepare(GlobalTransaction gxact);
44 extern void EndPrepare(GlobalTransaction gxact);
46 
48  int *nxids_p);
49 extern void StandbyRecoverPreparedTransactions(bool overwriteOK);
50 extern void RecoverPreparedTransactions(void);
51 
52 extern void CheckPointTwoPhase(XLogRecPtr redo_horizon);
53 
54 extern void FinishPreparedTransaction(const char *gid, bool isCommit);
55 
56 extern void PrepareRedoAdd(char *buf, XLogRecPtr start_lsn,
57  XLogRecPtr end_lsn);
58 extern void PrepareRedoRemove(TransactionId xid, bool giveWarning);
59 extern void restoreTwoPhaseData(void);
60 #endif /* TWOPHASE_H */
void AtAbort_Twophase(void)
Definition: twophase.c:317
void restoreTwoPhaseData(void)
Definition: twophase.c:1729
void PostPrepare_Twophase(void)
Definition: twophase.c:362
void FinishPreparedTransaction(const char *gid, bool isCommit)
Definition: twophase.c:1368
uint32 TransactionId
Definition: c.h:397
void EndPrepare(GlobalTransaction gxact)
Definition: twophase.c:1065
int64 TimestampTz
Definition: timestamp.h:39
struct GlobalTransactionData * GlobalTransaction
Definition: twophase.h:25
unsigned int Oid
Definition: postgres_ext.h:31
void CheckPointTwoPhase(XLogRecPtr redo_horizon)
Definition: twophase.c:1650
char gid[GIDSIZE]
Definition: twophase.c:176
void PrepareRedoAdd(char *buf, XLogRecPtr start_lsn, XLogRecPtr end_lsn)
Definition: twophase.c:2312
void TwoPhaseShmemInit(void)
Definition: twophase.c:252
PGPROC * TwoPhaseGetDummyProc(TransactionId xid)
Definition: twophase.c:869
void StartPrepare(GlobalTransaction gxact)
Definition: twophase.c:992
static char * buf
Definition: pg_test_fsync.c:66
GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid, TimestampTz prepared_at, Oid owner, Oid databaseid)
Definition: twophase.c:377
int BackendId
Definition: backendid.h:21
void RecoverPreparedTransactions(void)
Definition: twophase.c:1900
uint64 XLogRecPtr
Definition: xlogdefs.h:21
BackendId TwoPhaseGetDummyBackendId(TransactionId xid)
Definition: twophase.c:857
size_t Size
Definition: c.h:356
TransactionId xid
Definition: twophase.c:169
TimestampTz prepared_at
Definition: twophase.c:158
void PrepareRedoRemove(TransactionId xid, bool giveWarning)
Definition: twophase.c:2374
bool StandbyTransactionIdIsPrepared(TransactionId xid)
Definition: twophase.c:1340
Definition: proc.h:94
TransactionId PrescanPreparedTransactions(TransactionId **xids_p, int *nxids_p)
Definition: twophase.c:1785
void StandbyRecoverPreparedTransactions(bool overwriteOK)
Definition: twophase.c:1866
Size TwoPhaseShmemSize(void)
Definition: twophase.c:236
int max_prepared_xacts
Definition: twophase.c:117