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Refactor XLogOpenRelation() and XLogReadBuffer() in preparation for relation

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forks. XLogOpenRelation() and the associated light-weight relation cache in
xlogutils.c is gone, and XLogReadBuffer() now takes a RelFileNode as argument,
instead of Relation.

For functions that still need a Relation struct during WAL replay, there's a
new function called CreateFakeRelcacheEntry() that returns a fake entry like
XLogOpenRelation() used to.
This commit is contained in:
Heikki Linnakangas
2008-06-12 09:12:31 +00:00
parent c4f2a0458d
commit a213f1ee6c
20 changed files with 295 additions and 427 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/backend/access/transam/xlog.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.313 2008/06/08 22:00:47 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.314 2008/06/12 09:12:30 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@ -2840,7 +2840,6 @@ CleanupBackupHistory(void)
static void
RestoreBkpBlocks(XLogRecord *record, XLogRecPtr lsn)
{
Relation reln;
Buffer buffer;
Page page;
BkpBlock bkpb;
@ -2856,8 +2855,7 @@ RestoreBkpBlocks(XLogRecord *record, XLogRecPtr lsn)
memcpy(&bkpb, blk, sizeof(BkpBlock));
blk += sizeof(BkpBlock);
reln = XLogOpenRelation(bkpb.node);
buffer = XLogReadBuffer(reln, bkpb.block, true);
buffer = XLogReadBuffer(bkpb.node, bkpb.block, true);
Assert(BufferIsValid(buffer));
page = (Page) BufferGetPage(buffer);
@ -5064,9 +5062,7 @@ StartupXLOG(void)
BACKUP_LABEL_FILE, BACKUP_LABEL_OLD)));
}
/* Start up the recovery environment */
XLogInitRelationCache();
/* Initialize resource managers */
for (rmid = 0; rmid <= RM_MAX_ID; rmid++)
{
if (RmgrTable[rmid].rm_startup != NULL)
@ -5330,11 +5326,6 @@ StartupXLOG(void)
* allows some extra error checking in xlog_redo.
*/
CreateCheckPoint(CHECKPOINT_IS_SHUTDOWN | CHECKPOINT_IMMEDIATE);
/*
* Close down recovery environment
*/
XLogCloseRelationCache();
}
/*