1 /*-------------------------------------------------------------------------
4 * Two-phase-commit related declarations.
7 * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
10 * $PostgreSQL: pgsql/src/include/access/twophase.h,v 1.11 2009/01/01 17:23:56 momjian Exp $
12 *-------------------------------------------------------------------------
17 #include "access/xlogdefs.h"
18 #include "storage/proc.h"
19 #include "utils/timestamp.h"
22 * GlobalTransactionData is defined in twophase.c; other places have no
23 * business knowing the internal definition.
25 typedef struct GlobalTransactionData *GlobalTransaction;
28 extern int max_prepared_xacts;
30 extern Size TwoPhaseShmemSize(void);
31 extern void TwoPhaseShmemInit(void);
33 extern PGPROC *TwoPhaseGetDummyProc(TransactionId xid);
35 extern GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid,
36 TimestampTz prepared_at,
37 Oid owner, Oid databaseid);
39 extern void StartPrepare(GlobalTransaction gxact);
40 extern void EndPrepare(GlobalTransaction gxact);
42 extern TransactionId PrescanPreparedTransactions(void);
43 extern void RecoverPreparedTransactions(void);
45 extern void RecreateTwoPhaseFile(TransactionId xid, void *content, int len);
46 extern void RemoveTwoPhaseFile(TransactionId xid, bool giveWarning);
48 extern void CheckPointTwoPhase(XLogRecPtr redo_horizon);
50 extern void FinishPreparedTransaction(const char *gid, bool isCommit);
52 #endif /* TWOPHASE_H */