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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2007-08-01 22:45:09 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2007-08-01 22:45:09 +0000 |
| commit | 4a78cdeb6b598940e9d9adb92deca6494628802a (patch) | |
| tree | 0c8ad45eea297dcbc647705265eab8188fd4d8b1 /src/include/access/transam.h | |
| parent | c722628a430f347ff4a30419004cddc9795a3bb6 (diff) | |
| download | postgresql-4a78cdeb6b598940e9d9adb92deca6494628802a.tar.gz postgresql-4a78cdeb6b598940e9d9adb92deca6494628802a.zip | |
Support an optional asynchronous commit mode, in which we don't flush WAL
before reporting a transaction committed. Data consistency is still
guaranteed (unlike setting fsync = off), but a crash may lose the effects
of the last few transactions. Patch by Simon, some editorialization by Tom.
Diffstat (limited to 'src/include/access/transam.h')
| -rw-r--r-- | src/include/access/transam.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/include/access/transam.h b/src/include/access/transam.h index b6fadcd4362..98850cc0d3b 100644 --- a/src/include/access/transam.h +++ b/src/include/access/transam.h @@ -7,13 +7,15 @@ * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/transam.h,v 1.60 2007/01/05 22:19:51 momjian Exp $ + * $PostgreSQL: pgsql/src/include/access/transam.h,v 1.61 2007/08/01 22:45:09 tgl Exp $ * *------------------------------------------------------------------------- */ #ifndef TRANSAM_H #define TRANSAM_H +#include "access/xlogdefs.h" + /* ---------------- * Special transaction ID values @@ -115,14 +117,17 @@ extern VariableCache ShmemVariableCache; extern bool TransactionIdDidCommit(TransactionId transactionId); extern bool TransactionIdDidAbort(TransactionId transactionId); extern void TransactionIdCommit(TransactionId transactionId); +extern void TransactionIdAsyncCommit(TransactionId transactionId, XLogRecPtr lsn); extern void TransactionIdAbort(TransactionId transactionId); extern void TransactionIdSubCommit(TransactionId transactionId); extern void TransactionIdCommitTree(int nxids, TransactionId *xids); +extern void TransactionIdAsyncCommitTree(int nxids, TransactionId *xids, XLogRecPtr lsn); extern void TransactionIdAbortTree(int nxids, TransactionId *xids); extern bool TransactionIdPrecedes(TransactionId id1, TransactionId id2); extern bool TransactionIdPrecedesOrEquals(TransactionId id1, TransactionId id2); extern bool TransactionIdFollows(TransactionId id1, TransactionId id2); extern bool TransactionIdFollowsOrEquals(TransactionId id1, TransactionId id2); +extern XLogRecPtr TransactionIdGetCommitLSN(TransactionId xid); /* in transam/varsup.c */ extern TransactionId GetNewTransactionId(bool isSubXact); |