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Add a time-of-preparation column to the pg_prepared_xacts view, per an

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old suggestion by Oliver Jowett.  Also, add a transaction column to the
pg_locks view to show the xid of each transaction holding or awaiting
locks; this allows prepared transactions to be properly associated with
the locks they own.  There was already a column named 'transaction',
and I chose to rename it to 'transactionid' --- since this column is
new in the current devel cycle there should be no backwards compatibility
issue to worry about.
This commit is contained in:
Tom Lane
2005-06-18 19:33:42 +00:00
parent 66b098492e
commit a8d1075f27
8 changed files with 106 additions and 54 deletions
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10
src/include/access/twophase.h
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@@ -7,7 +7,7 @@
* 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 $
* $PostgreSQL: pgsql/src/include/access/twophase.h,v 1.2 2005/06/18 19:33:42 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -15,6 +15,7 @@
#define TWOPHASE_H
#include "storage/lock.h"
#include "utils/timestamp.h"
/*
@@ -31,8 +32,9 @@ extern void TwoPhaseShmemInit(void);
extern PGPROC *TwoPhaseGetDummyProc(TransactionId xid);
extern GlobalTransaction MarkAsPreparing(TransactionId xid, Oid databaseid,
char *gid, AclId owner);
extern GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid,
TimestampTz prepared_at,
AclId owner, Oid databaseid);
extern void MarkAsPrepared(GlobalTransaction gxact);
extern void StartPrepare(GlobalTransaction gxact);
@@ -44,6 +46,6 @@ 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);
extern void FinishPreparedTransaction(const char *gid, bool isCommit);
#endif /* TWOPHASE_H */