database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-10 17:42:29 +03:00
Code Activity

Ensure that all TransactionId comparisons are encapsulated in macros

Browse Source 
(TransactionIdPrecedes, TransactionIdFollows, etc).  First step on the
way to transaction ID wrap solution ...
This commit is contained in:
Tom Lane
2001-08-23 23:06:38 +00:00
parent 29ec29ffac
commit 7326e78c42
17 changed files with 139 additions and 100 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/backend/access/transam/transam.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/transam/transam.c,v 1.45 2001/07/12 04:11:13 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/transam.c,v 1.46 2001/08/23 23:06:37 tgl Exp $
*
* NOTES
* This file contains the high level access-method interface to the
@@ -44,7 +44,7 @@ Relation LogRelation = (Relation) NULL;
* Single-item cache for results of TransactionLogTest.
* ----------------
*/
static TransactionId cachedTestXid = NullTransactionId;
static TransactionId cachedTestXid = InvalidTransactionId;
static XidStatus cachedTestXidStatus;
/* ----------------
@@ -333,18 +333,19 @@ InitializeTransactionLog(void)
/*
* if we have a virgin database, we initialize the log relation by
* committing the AmiTransactionId and we initialize the
* committing the BootstrapTransactionId and we initialize the
* variable relation by setting the next available transaction id to
* FirstTransactionId. OID initialization happens as a side
* FirstNormalTransactionId. OID initialization happens as a side
* effect of bootstrapping in varsup.c.
*/
SpinAcquire(OidGenLockId);
if (!TransactionIdDidCommit(AmiTransactionId))
if (!TransactionIdDidCommit(BootstrapTransactionId))
{
TransactionLogUpdate(AmiTransactionId, XID_COMMIT);
TransactionLogUpdate(BootstrapTransactionId, XID_COMMIT);
Assert(!IsUnderPostmaster &&
ShmemVariableCache->nextXid <= FirstTransactionId);
ShmemVariableCache->nextXid = FirstTransactionId;
TransactionIdEquals(ShmemVariableCache->nextXid,
FirstNormalTransactionId));
ShmemVariableCache->nextXid = FirstNormalTransactionId;
}
else if (RecoveryCheckingEnabled())
{

8
src/backend/access/transam/varsup.c
View File

@@ -6,7 +6,7 @@
* Copyright (c) 2000, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/transam/varsup.c,v 1.43 2001/08/10 18:57:33 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/varsup.c,v 1.44 2001/08/23 23:06:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -41,7 +41,7 @@ GetNewTransactionId(TransactionId *xid)
*/
if (AMI_OVERRIDE)
{
*xid = AmiTransactionId;
*xid = BootstrapTransactionId;
return;
}
@@ -49,7 +49,7 @@ GetNewTransactionId(TransactionId *xid)
*xid = ShmemVariableCache->nextXid;
(ShmemVariableCache->nextXid)++;
TransactionIdAdvance(ShmemVariableCache->nextXid);
/*
* Must set MyProc->xid before releasing XidGenLock. This ensures that
@@ -89,7 +89,7 @@ ReadNewTransactionId(TransactionId *xid)
*/
if (AMI_OVERRIDE)
{
*xid = AmiTransactionId;
*xid = BootstrapTransactionId;
return;
}

10
src/backend/access/transam/xid.c
View File

@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: xid.c,v 1.31 2001/07/12 04:11:13 tgl Exp $
* $Id: xid.c,v 1.32 2001/08/23 23:06:37 tgl Exp $
*
* OLD COMMENTS
* XXX WARNING
@@ -23,11 +23,8 @@
#include "access/xact.h"
/*
* TransactionId is typedef'd as uint32, so...
*/
#define PG_GETARG_TRANSACTIONID(n) PG_GETARG_UINT32(n)
#define PG_RETURN_TRANSACTIONID(x) PG_RETURN_UINT32(x)
#define PG_GETARG_TRANSACTIONID(n) DatumGetTransactionId(PG_GETARG_DATUM(n))
#define PG_RETURN_TRANSACTIONID(x) return TransactionIdGetDatum(x)
Datum
@@ -42,7 +39,6 @@ Datum
xidout(PG_FUNCTION_ARGS)
{
TransactionId transactionId = PG_GETARG_TRANSACTIONID(0);
/* maximum 32 bit unsigned integer representation takes 10 chars */
char *representation = palloc(11);

22
src/backend/access/transam/xlog.c
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.73 2001/08/10 18:57:33 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.74 2001/08/23 23:06:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -2349,7 +2349,7 @@ BootStrapXLOG(void)
checkPoint.redo.xrecoff = SizeOfXLogPHD;
checkPoint.undo = checkPoint.redo;
checkPoint.ThisStartUpID = 0;
checkPoint.nextXid = FirstTransactionId;
checkPoint.nextXid = FirstNormalTransactionId;
checkPoint.nextOid = BootstrapObjectIdData;
checkPoint.time = time(NULL);
@@ -2508,7 +2508,7 @@ StartupXLOG(void)
wasShutdown ? "TRUE" : "FALSE");
elog(LOG, "next transaction id: %u; next oid: %u",
checkPoint.nextXid, checkPoint.nextOid);
if (checkPoint.nextXid < FirstTransactionId)
if (!TransactionIdIsNormal(checkPoint.nextXid))
elog(STOP, "invalid next transaction id");
ShmemVariableCache->nextXid = checkPoint.nextXid;
@@ -2550,8 +2550,10 @@ StartupXLOG(void)
if (XLByteLT(checkPoint.redo, RecPtr))
record = ReadRecord(&(checkPoint.redo), STOP, buffer);
else
/* read past CheckPoint record */
{
/* read past CheckPoint record */
record = ReadRecord(NULL, LOG, buffer);
}
if (record != NULL)
{
@@ -2560,8 +2562,13 @@ StartupXLOG(void)
ReadRecPtr.xlogid, ReadRecPtr.xrecoff);
do
{
if (record->xl_xid >= ShmemVariableCache->nextXid)
ShmemVariableCache->nextXid = record->xl_xid + 1;
/* nextXid must be beyond record's xid */
if (TransactionIdFollowsOrEquals(record->xl_xid,
ShmemVariableCache->nextXid))
{
ShmemVariableCache->nextXid = record->xl_xid;
TransactionIdAdvance(ShmemVariableCache->nextXid);
}
if (XLOG_DEBUG)
{
char buf[8192];
@@ -3101,7 +3108,8 @@ xlog_redo(XLogRecPtr lsn, XLogRecord *record)
memcpy(&checkPoint, XLogRecGetData(record), sizeof(CheckPoint));
/* In an ONLINE checkpoint, treat the counters like NEXTOID */
if (ShmemVariableCache->nextXid < checkPoint.nextXid)
if (TransactionIdPrecedes(ShmemVariableCache->nextXid,
checkPoint.nextXid))
ShmemVariableCache->nextXid = checkPoint.nextXid;
if (ShmemVariableCache->nextOid < checkPoint.nextOid)
{

4
src/backend/access/transam/xlogutils.c
View File

@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/access/transam/xlogutils.c,v 1.16 2001/06/29 21:08:24 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/xlogutils.c,v 1.17 2001/08/23 23:06:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -76,7 +76,7 @@ XLogIsOwnerOfTuple(RelFileNode hnode, ItemPointer iptr,
htup = (HeapTupleHeader) PageGetItem(page, lp);
Assert(PageGetSUI(page) == ThisStartUpID);
if (htup->t_xmin != xid || htup->t_cmin != cid)
if (!TransactionIdEquals(htup->t_xmin, xid) || htup->t_cmin != cid)
{
UnlockAndReleaseBuffer(buffer);
return (-1);