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Commit5800c6b

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committed
Btree WAL logging.
1 parent831e78e commit5800c6b

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4 files changed

+223
-55
lines changed

4 files changed

+223
-55
lines changed

‎src/backend/access/heap/heapam.c‎

Lines changed: 6 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.85 2000/09/07 09:58:34 vadim Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.86 2000/10/04 00:04:41 vadim Exp $
1212
*
1313
*
1414
* INTERFACE ROUTINES
@@ -86,8 +86,8 @@
8686
#include"utils/inval.h"
8787
#include"utils/relcache.h"
8888

89-
#ifdefXLOG/* comments are in_heap_update */
90-
staticItemPointerData_locked_tuple;
89+
#ifdefXLOG/* comments are inheap_update */
90+
staticxl_heaptid_locked_tuple_;
9191
#endif
9292

9393

@@ -1650,8 +1650,9 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
16501650
* In the event of crash prio logging, TQUAL routines will see
16511651
* HEAP_XMAX_UNLOGGED flag...
16521652
*/
1653-
_locked_tuple=*otid;
1654-
XactPushRollback(_heap_unlock_tuple, (void*)&_locked_tuple);
1653+
_locked_tuple_.node=relation->rd_node;
1654+
_locked_tuple_.tid=*otid;
1655+
XactPushRollback(_heap_unlock_tuple, (void*)&_locked_tuple_);
16551656
#endif
16561657
TransactionIdStore(GetCurrentTransactionId(),&(oldtup.t_data->t_xmax));
16571658
oldtup.t_data->t_cmax=GetCurrentCommandId();

‎src/backend/access/nbtree/nbtinsert.c‎

Lines changed: 132 additions & 24 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.62 2000/08/25 23:13:33 tgl Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.63 2000/10/04 00:04:42 vadim Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -33,6 +33,7 @@ typedef struct
3333
intbest_delta;/* best size delta so far */
3434
}FindSplitData;
3535

36+
void_bt_newroot(Relationrel,Bufferlbuf,Bufferrbuf);
3637

3738
staticTransactionId_bt_check_unique(Relationrel,BTItembtitem,
3839
RelationheapRel,Bufferbuf,
@@ -54,7 +55,6 @@ static void _bt_checksplitloc(FindSplitData *state, OffsetNumber firstright,
5455
intleftfree,intrightfree,
5556
boolnewitemonleft,Sizefirstrightitemsz);
5657
staticBuffer_bt_getstackbuf(Relationrel,BTStackstack);
57-
staticvoid_bt_newroot(Relationrel,Bufferlbuf,Bufferrbuf);
5858
staticvoid_bt_pgaddtup(Relationrel,Pagepage,
5959
Sizeitemsize,BTItembtitem,
6060
OffsetNumberitup_off,constchar*where);
@@ -514,6 +514,29 @@ _bt_insertonpg(Relation rel,
514514
}
515515
else
516516
{
517+
#ifdefXLOG
518+
/* XLOG stuff */
519+
{
520+
charxlbuf[sizeof(xl_btree_insert)+2*sizeof(CommandId)];
521+
xl_btree_insert*xlrec=xlbuf;
522+
inthsize=SizeOfBtreeInsert;
523+
524+
xlrec->target.node=rel->rd_node;
525+
ItemPointerSet(&(xlrec->target.tid),BufferGetBlockNumber(buf),newitemoff);
526+
if (P_ISLEAF(lpageop))
527+
{
528+
CommandIdcid=GetCurrentCommandId();
529+
memcpy(xlbuf+SizeOfBtreeInsert,&(char*)cid,sizeof(CommandId));
530+
hsize+=sizeof(CommandId);
531+
}
532+
533+
XLogRecPtrrecptr=XLogInsert(RM_BTREE_ID,XLOG_BTREE_INSERT,
534+
xlbuf,hsize, (char*)btitem,itemsz);
535+
536+
PageSetLSN(page,recptr);
537+
PageSetSUI(page,ThisStartUpID);
538+
}
539+
#endif
517540
_bt_pgaddtup(rel,page,itemsz,btitem,newitemoff,"page");
518541
itup_off=newitemoff;
519542
itup_blkno=BufferGetBlockNumber(buf);
@@ -578,8 +601,9 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
578601
ropaque= (BTPageOpaque)PageGetSpecialPointer(rightpage);
579602

580603
/* if we're splitting this page, it won't be the root when we're done */
581-
oopaque->btpo_flags &= ~BTP_ROOT;
582-
lopaque->btpo_flags=ropaque->btpo_flags=oopaque->btpo_flags;
604+
lopaque->btpo_flags=oopaque->btpo_flags;
605+
lopaque->btpo_flags &= ~BTP_ROOT;
606+
ropaque->btpo_flags=lopaque->btpo_flags;
583607
lopaque->btpo_prev=oopaque->btpo_prev;
584608
lopaque->btpo_next=BufferGetBlockNumber(rbuf);
585609
ropaque->btpo_prev=BufferGetBlockNumber(buf);
@@ -608,7 +632,7 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
608632
item= (BTItem)PageGetItem(origpage,itemid);
609633
if (PageAddItem(rightpage, (Item)item,itemsz,rightoff,
610634
LP_USED)==InvalidOffsetNumber)
611-
elog(FATAL,"btree: failed to add hikey to the right sibling");
635+
elog(STOP,"btree: failed to add hikey to the right sibling");
612636
rightoff=OffsetNumberNext(rightoff);
613637
}
614638

@@ -633,7 +657,7 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
633657
}
634658
if (PageAddItem(leftpage, (Item)item,itemsz,leftoff,
635659
LP_USED)==InvalidOffsetNumber)
636-
elog(FATAL,"btree: failed to add hikey to the left sibling");
660+
elog(STOP,"btree: failed to add hikey to the left sibling");
637661
leftoff=OffsetNumberNext(leftoff);
638662

639663
/*
@@ -704,6 +728,75 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
704728
}
705729
}
706730

731+
/*
732+
* We have to grab the right sibling (if any) and fix the prev
733+
* pointer there. We are guaranteed that this is deadlock-free
734+
* since no other writer will be holding a lock on that page
735+
* and trying to move left, and all readers release locks on a page
736+
* before trying to fetch its neighbors.
737+
*/
738+
739+
if (!P_RIGHTMOST(ropaque))
740+
{
741+
sbuf=_bt_getbuf(rel,ropaque->btpo_next,BT_WRITE);
742+
spage=BufferGetPage(sbuf);
743+
}
744+
745+
#ifdefXLOG
746+
/*
747+
* Right sibling is locked, new siblings are prepared, but original
748+
* page is not updated yet. Log changes before continuing.
749+
*
750+
* NO ELOG(ERROR) till right sibling is updated.
751+
*
752+
*/
753+
{
754+
charxlbuf[sizeof(xl_btree_split)+
755+
2*sizeof(CommandId)+BLCKSZ];
756+
xl_btree_split*xlrec=xlbuf;
757+
inthsize=SizeOfBtreeSplit;
758+
intflag= (newitemonleft) ?
759+
XLOG_BTREE_SPLEFT :XLOG_BTREE_SPLIT;
760+
761+
xlrec->target.node=rel->rd_node;
762+
ItemPointerSet(&(xlrec->target.tid),itup_blkno,itup_off);
763+
if (P_ISLEAF(lopaque))
764+
{
765+
CommandIdcid=GetCurrentCommandId();
766+
memcpy(xlbuf+hsize,&(char*)cid,sizeof(CommandId));
767+
hsize+=sizeof(CommandId);
768+
}
769+
if (newitemonleft)
770+
{
771+
memcpy(xlbuf+hsize, (char*)newitem,newitemsz);
772+
hsize+=newitemsz;
773+
xlrec->otherblk=BufferGetBlockNumber(rbuf);
774+
}
775+
else
776+
xlrec->otherblk=BufferGetBlockNumber(buf);
777+
778+
xlrec->rightblk=ropaque->btpo_next;
779+
780+
/*
781+
* Dirrect access to page is not good but faster - we should
782+
* implement some new func in page API.
783+
*/
784+
XLogRecPtrrecptr=XLogInsert(RM_BTREE_ID,flag,xlbuf,
785+
hsize, (char*)rightpage+ (PageHeader)rightpage)->pd_upper,
786+
((PageHeader)rightpage)->pd_special- ((PageHeader)rightpage)->upper);
787+
788+
PageSetLSN(leftpage,recptr);
789+
PageSetSUI(leftpage,ThisStartUpID);
790+
PageSetLSN(rightpage,recptr);
791+
PageSetSUI(rightpage,ThisStartUpID);
792+
if (!P_RIGHTMOST(ropaque))
793+
{
794+
PageSetLSN(spage,recptr);
795+
PageSetSUI(spage,ThisStartUpID);
796+
}
797+
}
798+
#endif
799+
707800
/*
708801
* By here, the original data page has been split into two new halves,
709802
* and these are correct. The algorithm requires that the left page
@@ -716,18 +809,8 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
716809

717810
PageRestoreTempPage(leftpage,origpage);
718811

719-
/*
720-
* Finally, we need to grab the right sibling (if any) and fix the
721-
* prev pointer there.We are guaranteed that this is deadlock-free
722-
* since no other writer will be holding a lock on that page
723-
* and trying to move left, and all readers release locks on a page
724-
* before trying to fetch its neighbors.
725-
*/
726-
727812
if (!P_RIGHTMOST(ropaque))
728813
{
729-
sbuf=_bt_getbuf(rel,ropaque->btpo_next,BT_WRITE);
730-
spage=BufferGetPage(sbuf);
731814
sopaque= (BTPageOpaque)PageGetSpecialPointer(spage);
732815
sopaque->btpo_prev=BufferGetBlockNumber(rbuf);
733816

@@ -1002,7 +1085,7 @@ _bt_getstackbuf(Relation rel, BTStack stack)
10021085
*two new children. The new root page is neither pinned nor locked, and
10031086
*we have also written out lbuf and rbuf and dropped their pins/locks.
10041087
*/
1005-
staticvoid
1088+
void
10061089
_bt_newroot(Relationrel,Bufferlbuf,Bufferrbuf)
10071090
{
10081091
Bufferrootbuf;
@@ -1011,7 +1094,7 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
10111094
rootpage;
10121095
BlockNumberlbkno,
10131096
rbkno;
1014-
BlockNumberrootbknum;
1097+
BlockNumberrootblknum;
10151098
BTPageOpaquerootopaque;
10161099
ItemIditemid;
10171100
BTItemitem;
@@ -1021,12 +1104,16 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
10211104
/* get a new root page */
10221105
rootbuf=_bt_getbuf(rel,P_NEW,BT_WRITE);
10231106
rootpage=BufferGetPage(rootbuf);
1024-
rootbknum=BufferGetBlockNumber(rootbuf);
1107+
rootblknum=BufferGetBlockNumber(rootbuf);
1108+
1109+
1110+
/* NO ELOG(ERROR) from here till newroot op is logged */
10251111

10261112
/* set btree special data */
10271113
rootopaque= (BTPageOpaque)PageGetSpecialPointer(rootpage);
10281114
rootopaque->btpo_prev=rootopaque->btpo_next=P_NONE;
10291115
rootopaque->btpo_flags |=BTP_ROOT;
1116+
rootopaque->btpo_parent=BTREE_METAPAGE;
10301117

10311118
lbkno=BufferGetBlockNumber(lbuf);
10321119
rbkno=BufferGetBlockNumber(rbuf);
@@ -1040,7 +1127,7 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
10401127
*/
10411128
((BTPageOpaque)PageGetSpecialPointer(lpage))->btpo_parent=
10421129
((BTPageOpaque)PageGetSpecialPointer(rpage))->btpo_parent=
1043-
rootbknum;
1130+
rootblknum;
10441131

10451132
/*
10461133
* Create downlink item for left page (old root). Since this will be
@@ -1058,7 +1145,7 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
10581145
* the two items will go into positions P_HIKEY and P_FIRSTKEY.
10591146
*/
10601147
if (PageAddItem(rootpage, (Item)new_item,itemsz,P_HIKEY,LP_USED)==InvalidOffsetNumber)
1061-
elog(FATAL,"btree: failed to add leftkey to new root page");
1148+
elog(STOP,"btree: failed to add leftkey to new root page");
10621149
pfree(new_item);
10631150

10641151
/*
@@ -1075,14 +1162,35 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
10751162
* insert the right page pointer into the new root page.
10761163
*/
10771164
if (PageAddItem(rootpage, (Item)new_item,itemsz,P_FIRSTKEY,LP_USED)==InvalidOffsetNumber)
1078-
elog(FATAL,"btree: failed to add rightkey to new root page");
1165+
elog(STOP,"btree: failed to add rightkey to new root page");
10791166
pfree(new_item);
10801167

1168+
#ifdefXLOG
1169+
/* XLOG stuff */
1170+
{
1171+
xl_btree_newrootxlrec;
1172+
xlrec.node=rel->rd_node;
1173+
xlrec.rootblk=rootblknum;
1174+
1175+
/*
1176+
* Dirrect access to page is not good but faster - we should
1177+
* implement some new func in page API.
1178+
*/
1179+
XLogRecPtrrecptr=XLogInsert(RM_BTREE_ID,XLOG_BTREE_NEWROOT,
1180+
&xlrec,SizeOfBtreeNewroot,
1181+
(char*)rootpage+ (PageHeader)rootpage)->pd_upper,
1182+
((PageHeader)rootpage)->pd_special- ((PageHeader)rootpage)->upper);
1183+
1184+
PageSetLSN(rootpage,recptr);
1185+
PageSetSUI(rootpage,ThisStartUpID);
1186+
}
1187+
#endif
1188+
10811189
/* write and let go of the new root buffer */
10821190
_bt_wrtbuf(rel,rootbuf);
10831191

10841192
/* update metadata page with new root block number */
1085-
_bt_metaproot(rel,rootbknum,0);
1193+
_bt_metaproot(rel,rootblknum,0);
10861194

10871195
/* update and release new sibling, and finally the old root */
10881196
_bt_wrtbuf(rel,rbuf);
@@ -1125,7 +1233,7 @@ _bt_pgaddtup(Relation rel,
11251233

11261234
if (PageAddItem(page, (Item)btitem,itemsize,itup_off,
11271235
LP_USED)==InvalidOffsetNumber)
1128-
elog(FATAL,"btree: failed to add item to the %s for %s",
1236+
elog(STOP,"btree: failed to add item to the %s for %s",
11291237
where,RelationGetRelationName(rel));
11301238
}
11311239

‎src/backend/access/nbtree/nbtpage.c‎

Lines changed: 39 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -9,7 +9,7 @@
99
*
1010
*
1111
* IDENTIFICATION
12-
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v 1.37 2000/07/21 06:42:32 tgl Exp $
12+
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v 1.38 2000/10/04 00:04:42 vadim Exp $
1313
*
1414
*NOTES
1515
* Postgres btree pages look like ordinary relation pages.The opaque
@@ -128,7 +128,7 @@ _bt_getroot(Relation rel, int access)
128128
Pagemetapg;
129129
BTPageOpaquemetaopaque;
130130
Bufferrootbuf;
131-
Pagerootpg;
131+
Pagerootpage;
132132
BTPageOpaquerootopaque;
133133
BlockNumberrootblkno;
134134
BTMetaPageData*metad;
@@ -177,14 +177,31 @@ _bt_getroot(Relation rel, int access)
177177
*/
178178
rootbuf=_bt_getbuf(rel,P_NEW,BT_WRITE);
179179
rootblkno=BufferGetBlockNumber(rootbuf);
180-
rootpg=BufferGetPage(rootbuf);
180+
rootpage=BufferGetPage(rootbuf);
181+
182+
/* NO ELOG(ERROR) till meta is updated */
183+
184+
_bt_pageinit(rootpage,BufferGetPageSize(rootbuf));
185+
rootopaque= (BTPageOpaque)PageGetSpecialPointer(rootpage);
186+
rootopaque->btpo_flags |= (BTP_LEAF |BTP_ROOT);
187+
188+
#ifdefXLOG
189+
/* XLOG stuff */
190+
{
191+
xl_btree_insertxlrec;
192+
xlrec.node=rel->rd_node;
193+
194+
XLogRecPtrrecptr=XLogInsert(RM_BTREE_ID,XLOG_BTREE_NEWROOT,
195+
&xlrec,SizeOfBtreeNewroot,NULL,0);
196+
197+
PageSetLSN(rootpage,recptr);
198+
PageSetSUI(rootpage,ThisStartUpID);
199+
}
200+
#endif
181201

182202
metad->btm_root=rootblkno;
183203
metad->btm_level=1;
184204

185-
_bt_pageinit(rootpg,BufferGetPageSize(rootbuf));
186-
rootopaque= (BTPageOpaque)PageGetSpecialPointer(rootpg);
187-
rootopaque->btpo_flags |= (BTP_LEAF |BTP_ROOT);
188205
_bt_wrtnorelbuf(rel,rootbuf);
189206

190207
/* swap write lock for read lock */
@@ -218,8 +235,8 @@ _bt_getroot(Relation rel, int access)
218235
* at the metadata page and got the root buffer, then we got the wrong
219236
* buffer. Release it and try again.
220237
*/
221-
rootpg=BufferGetPage(rootbuf);
222-
rootopaque= (BTPageOpaque)PageGetSpecialPointer(rootpg);
238+
rootpage=BufferGetPage(rootbuf);
239+
rootopaque= (BTPageOpaque)PageGetSpecialPointer(rootpage);
223240

224241
if (!P_ISROOT(rootopaque))
225242
{
@@ -396,6 +413,20 @@ _bt_pagedel(Relation rel, ItemPointer tid)
396413
buf=_bt_getbuf(rel,blkno,BT_WRITE);
397414
page=BufferGetPage(buf);
398415

416+
#ifdefXLOG
417+
/* XLOG stuff */
418+
{
419+
xl_btree_deletexlrec;
420+
xlrec.target.node=rel->rd_node;
421+
xlrec.target.tid=*tid;
422+
XLogRecPtrrecptr=XLogInsert(RM_BTREE_ID,XLOG_BTREE_DELETE,
423+
(char*)xlrec,SizeOfBtreeDelete,NULL,0);
424+
425+
PageSetLSN(page,recptr);
426+
PageSetSUI(page,ThisStartUpID);
427+
}
428+
#endif
429+
399430
PageIndexTupleDelete(page,offno);
400431

401432
/* write the buffer and release the lock */

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