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Two-phase commit. Original patch by Heikki Linnakangas, with additional

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hacking by Alvaro Herrera and Tom Lane.
This commit is contained in:
Tom Lane
2005-06-17 22:32:51 +00:00
parent 5495575903
commit d0a89683a3
61 changed files with 4454 additions and 439 deletions
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49
src/include/access/twophase.h Normal file
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/*-------------------------------------------------------------------------
*
* twophase.h
* Two-phase-commit related declarations.
*
*
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/twophase.h,v 1.1 2005/06/17 22:32:48 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef TWOPHASE_H
#define TWOPHASE_H
#include "storage/lock.h"
/*
* GlobalTransactionData is defined in twophase.c; other places have no
* business knowing the internal definition.
*/
typedef struct GlobalTransactionData *GlobalTransaction;
/* GUC variable */
extern int max_prepared_xacts;
extern int TwoPhaseShmemSize(void);
extern void TwoPhaseShmemInit(void);
extern PGPROC *TwoPhaseGetDummyProc(TransactionId xid);
extern GlobalTransaction MarkAsPreparing(TransactionId xid, Oid databaseid,
char *gid, AclId owner);
extern void MarkAsPrepared(GlobalTransaction gxact);
extern void StartPrepare(GlobalTransaction gxact);
extern void EndPrepare(GlobalTransaction gxact);
extern TransactionId PrescanPreparedTransactions(void);
extern void RecoverPreparedTransactions(void);
extern void RecreateTwoPhaseFile(TransactionId xid, void *content, int len);
extern void RemoveTwoPhaseFile(TransactionId xid, bool giveWarning);
extern void FinishPreparedTransaction(char *gid, bool isCommit);
#endif /* TWOPHASE_H */