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WAL

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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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85
src/backend/access/nbtree/nbtinsert.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.64 2000/10/05 20:10:20 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.65 2000/10/13 02:03:00 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -61,6 +61,10 @@ static void _bt_pgaddtup(Relation rel, Page page,
static bool _bt_isequal(TupleDesc itupdesc, Page page, OffsetNumber offnum,
int keysz, ScanKey scankey);
#ifdef XLOG
static Relation _xlheapRel; /* temporary hack */
#endif
/*
* _bt_doinsert() -- Handle insertion of a single btitem in the tree.
*
@@ -119,6 +123,10 @@ top:
}
}
#ifdef XLOG
_xlheapRel = heapRel; /* temporary hack */
#endif
/* do the insertion */
res = _bt_insertonpg(rel, buf, stack, natts, itup_scankey, btitem, 0);
@@ -517,21 +525,38 @@ _bt_insertonpg(Relation rel,
#ifdef XLOG
/* XLOG stuff */
{
char xlbuf[sizeof(xl_btree_insert) + 2 * sizeof(CommandId)];
char xlbuf[sizeof(xl_btree_insert) +
sizeof(CommandId) + sizeof(RelFileNode)];
xl_btree_insert *xlrec = xlbuf;
int hsize = SizeOfBtreeInsert;
BTItemData truncitem;
BTItem xlitem = btitem;
Size xlsize = IndexTupleDSize(btitem->bti_itup) +
(sizeof(BTItemData) - sizeof(IndexTupleData));
xlrec->target.node = rel->rd_node;
ItemPointerSet(&(xlrec->target.tid), BufferGetBlockNumber(buf), newitemoff);
if (P_ISLEAF(lpageop))
{
{
CommandId cid = GetCurrentCommandId();
memcpy(xlbuf + SizeOfBtreeInsert, &(char*)cid, sizeof(CommandId));
memcpy(xlbuf + hsize, &cid, sizeof(CommandId));
hsize += sizeof(CommandId);
memcpy(xlbuf + hsize, &(_xlheapRel->rd_node), sizeof(RelFileNode));
hsize += sizeof(RelFileNode);
}
/*
* Read comments in _bt_pgaddtup
*/
else if (newitemoff == P_FIRSTDATAKEY(lpageop))
{
truncitem = *btitem;
truncitem.bti_itup.t_info = sizeof(BTItemData);
xlitem = &truncitem;
xlsize = sizeof(BTItemData);
}
XLogRecPtr recptr = XLogInsert(RM_BTREE_ID, XLOG_BTREE_INSERT,
xlbuf, hsize, (char*) btitem, itemsz);
xlbuf, hsize, (char*) xlitem, xlsize);
PageSetLSN(page, recptr);
PageSetSUI(page, ThisStartUpID);
@@ -752,7 +777,7 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
*/
{
char xlbuf[sizeof(xl_btree_split) +
2 * sizeof(CommandId) + BLCKSZ];
sizeof(CommandId) + sizeof(RelFileNode) + BLCKSZ];
xl_btree_split *xlrec = xlbuf;
int hsize = SizeOfBtreeSplit;
int flag = (newitemonleft) ?
@@ -765,11 +790,30 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
CommandId cid = GetCurrentCommandId();
memcpy(xlbuf + hsize, &(char*)cid, sizeof(CommandId));
hsize += sizeof(CommandId);
memcpy(xlbuf + hsize, &(_xlheapRel->rd_node), sizeof(RelFileNode));
hsize += sizeof(RelFileNode);
}
if (newitemonleft)
{
memcpy(xlbuf + hsize, (char*) newitem, newitemsz);
hsize += newitemsz;
/*
* Read comments in _bt_pgaddtup.
* Actually, seems that in non-leaf splits newitem shouldn't
* go to first data key position.
*/
if (! P_ISLEAF(lopaque) && itup_off == P_FIRSTDATAKEY(lopaque))
{
BTItemData truncitem = *newitem;
truncitem.bti_itup.t_info = sizeof(BTItemData);
memcpy(xlbuf + hsize, &truncitem, sizeof(BTItemData));
hsize += sizeof(BTItemData);
}
else
{
Size itemsz = IndexTupleDSize(newitem->bti_itup) +
(sizeof(BTItemData) - sizeof(IndexTupleData));
memcpy(xlbuf + hsize, (char*) newitem, itemsz);
hsize += itemsz;
}
xlrec->otherblk = BufferGetBlockNumber(rbuf);
}
else
@@ -1012,7 +1056,7 @@ static Buffer
_bt_getstackbuf(Relation rel, BTStack stack)
{
BlockNumber blkno;
Buffer buf;
Buffer buf, newbuf;
OffsetNumber start,
offnum,
maxoff;
@@ -1101,11 +1145,18 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
Size itemsz;
BTItem new_item;
#ifdef XLOG
Buffer metabuf;
#endif
/* get a new root page */
rootbuf = _bt_getbuf(rel, P_NEW, BT_WRITE);
rootpage = BufferGetPage(rootbuf);
rootblknum = BufferGetBlockNumber(rootbuf);
#ifdef XLOG
metabuf = _bt_getbuf(rel, BTREE_METAPAGE,BT_WRITE);
#endif
/* NO ELOG(ERROR) from here till newroot op is logged */
@@ -1168,9 +1219,12 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
#ifdef XLOG
/* XLOG stuff */
{
xl_btree_newroot xlrec;
xl_btree_newroot xlrec;
Page metapg = BufferGetPage(metabuf);
BTMetaPageData *metad = BTPageGetMeta(metapg);
xlrec.node = rel->rd_node;
xlrec.rootblk = rootblknum;
BlockIdSet(&(xlrec.rootblk), rootblknum);
/*
* Dirrect access to page is not good but faster - we should
@@ -1181,16 +1235,25 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
(char*)rootpage + (PageHeader) rootpage)->pd_upper,
((PageHeader) rootpage)->pd_special - ((PageHeader) rootpage)->upper);
metad->btm_root = rootblknum;
(metad->btm_level)++;
PageSetLSN(rootpage, recptr);
PageSetSUI(rootpage, ThisStartUpID);
PageSetLSN(metapg, recptr);
PageSetSUI(metapg, ThisStartUpID);
_bt_wrtbuf(rel, metabuf);
}
#endif
/* write and let go of the new root buffer */
_bt_wrtbuf(rel, rootbuf);
#ifndef XLOG
/* update metadata page with new root block number */
_bt_metaproot(rel, rootblknum, 0);
#endif
/* update and release new sibling, and finally the old root */
_bt_wrtbuf(rel, rbuf);