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This commit is contained in:
Vadim B. Mikheev
2000-10-13 02:03:02 +00:00
parent 0b33ace678
commit 25a26a7ab8
5 changed files with 703 additions and 40 deletions
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25
src/backend/access/nbtree/nbtpage.c
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v 1.38 2000/10/04 00:04:42 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v 1.39 2000/10/13 02:03:00 vadim Exp $
*
* NOTES
* Postgres btree pages look like ordinary relation pages. The opaque
@@ -27,23 +27,6 @@
#include "access/nbtree.h"
#include "miscadmin.h"
#define BTREE_METAPAGE 0
#define BTREE_MAGIC 0x053162
#define BTREE_VERSION 1
typedef struct BTMetaPageData
{
uint32 btm_magic;
uint32 btm_version;
BlockNumber btm_root;
int32 btm_level;
} BTMetaPageData;
#define BTPageGetMeta(p) \
((BTMetaPageData *) &((PageHeader) p)->pd_linp[0])
/*
* We use high-concurrency locking on btrees. There are two cases in
* which we don't do locking. One is when we're building the btree.
@@ -188,14 +171,18 @@ _bt_getroot(Relation rel, int access)
#ifdef XLOG
/* XLOG stuff */
{
xl_btree_insert xlrec;
xl_btree_newroot xlrec;
xlrec.node = rel->rd_node;
BlockIdSet(&(xlrec.rootblk), rootblkno);
XLogRecPtr recptr = XLogInsert(RM_BTREE_ID, XLOG_BTREE_NEWROOT,
&xlrec, SizeOfBtreeNewroot, NULL, 0);
PageSetLSN(rootpage, recptr);
PageSetSUI(rootpage, ThisStartUpID);
PageSetLSN(metapg, recptr);
PageSetSUI(metapg, ThisStartUpID);
}
#endif