static void
ginRedoCreateIndex(XLogRecPtr lsn, XLogRecord *record)
{
RelFileNode *node = (RelFileNode *) XLogRecGetData(record);
Buffer RootBuffer,
MetaBuffer;
Page page;
/* Backup blocks are not used in create_index records */
Assert(!(record->xl_info & XLR_BKP_BLOCK_MASK));
MetaBuffer = XLogReadBuffer(*node, GIN_METAPAGE_BLKNO, true);
Assert(BufferIsValid(MetaBuffer));
page = (Page) BufferGetPage(MetaBuffer);
GinInitMetabuffer(MetaBuffer);
PageSetLSN(page, lsn);
MarkBufferDirty(MetaBuffer);
RootBuffer = XLogReadBuffer(*node, GIN_ROOT_BLKNO, true);
Assert(BufferIsValid(RootBuffer));
page = (Page) BufferGetPage(RootBuffer);
GinInitBuffer(RootBuffer, GIN_LEAF);
PageSetLSN(page, lsn);
MarkBufferDirty(RootBuffer);
UnlockReleaseBuffer(RootBuffer);
UnlockReleaseBuffer(MetaBuffer);
}
static void
spgRedoCreateIndex(XLogRecPtr lsn, XLogRecord *record)
{
RelFileNode *node = (RelFileNode *) XLogRecGetData(record);
Buffer buffer;
Page page;
/* Backup blocks are not used in create_index records */
Assert(!(record->xl_info & XLR_BKP_BLOCK_MASK));
buffer = XLogReadBuffer(*node, SPGIST_METAPAGE_BLKNO, true);
Assert(BufferIsValid(buffer));
page = (Page) BufferGetPage(buffer);
SpGistInitMetapage(page);
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
buffer = XLogReadBuffer(*node, SPGIST_ROOT_BLKNO, true);
Assert(BufferIsValid(buffer));
SpGistInitBuffer(buffer, SPGIST_LEAF);
page = (Page) BufferGetPage(buffer);
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
buffer = XLogReadBuffer(*node, SPGIST_NULL_BLKNO, true);
Assert(BufferIsValid(buffer));
SpGistInitBuffer(buffer, SPGIST_LEAF | SPGIST_NULLS);
page = (Page) BufferGetPage(buffer);
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
static void
spgRedoCreateIndex(XLogRecPtr lsn, XLogRecord *record)
{
RelFileNode *node = (RelFileNode *) XLogRecGetData(record);
Buffer buffer;
Page page;
buffer = XLogReadBuffer(*node, SPGIST_METAPAGE_BLKNO, true);
Assert(BufferIsValid(buffer));
page = (Page) BufferGetPage(buffer);
SpGistInitMetapage(page);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
buffer = XLogReadBuffer(*node, SPGIST_HEAD_BLKNO, true);
Assert(BufferIsValid(buffer));
SpGistInitBuffer(buffer, SPGIST_LEAF);
page = (Page) BufferGetPage(buffer);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
static void
ginRedoDeleteListPages(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogDeleteListPages *data = (ginxlogDeleteListPages *) XLogRecGetData(record);
Buffer metabuffer;
Page metapage;
int i;
/* Backup blocks are not used in delete_listpage records */
Assert(!(record->xl_info & XLR_BKP_BLOCK_MASK));
metabuffer = XLogReadBuffer(data->node, GIN_METAPAGE_BLKNO, false);
if (!BufferIsValid(metabuffer))
return; /* assume index was deleted, nothing to do */
metapage = BufferGetPage(metabuffer);
memcpy(GinPageGetMeta(metapage), &data->metadata, sizeof(GinMetaPageData));
PageSetLSN(metapage, lsn);
MarkBufferDirty(metabuffer);
/*
* In normal operation, shiftList() takes exclusive lock on all the
* pages-to-be-deleted simultaneously. During replay, however, it should
* be all right to lock them one at a time. This is dependent on the fact
* that we are deleting pages from the head of the list, and that readers
* share-lock the next page before releasing the one they are on. So we
* cannot get past a reader that is on, or due to visit, any page we are
* going to delete. New incoming readers will block behind our metapage
* lock and then see a fully updated page list.
*/
for (i = 0; i < data->ndeleted; i++)
{
Buffer buffer = XLogReadBuffer(data->node, data->toDelete[i], false);
if (BufferIsValid(buffer))
{
Page page = BufferGetPage(buffer);
if (lsn > PageGetLSN(page))
{
GinPageGetOpaque(page)->flags = GIN_DELETED;
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
UnlockReleaseBuffer(metabuffer);
}
/*
* Replay the clearing of F_FOLLOW_RIGHT flag.
*/
static void
gistRedoClearFollowRight(RelFileNode node, XLogRecPtr lsn,
BlockNumber leftblkno)
{
Buffer buffer;
buffer = XLogReadBuffer(node, leftblkno, false);
if (BufferIsValid(buffer))
{
Page page = (Page) BufferGetPage(buffer);
/*
* Note that we still update the page even if page LSN is equal to the
* LSN of this record, because the updated NSN is not included in the
* full page image.
*/
if (!XLByteLT(lsn, PageGetLSN(page)))
{
GistPageGetOpaque(page)->nsn = lsn;
GistClearFollowRight(page);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
static void
spgRedoVacuumRoot(XLogRecPtr lsn, XLogRecord *record)
{
char *ptr = XLogRecGetData(record);
spgxlogVacuumRoot *xldata = (spgxlogVacuumRoot *) ptr;
OffsetNumber *toDelete;
Buffer buffer;
Page page;
ptr += sizeof(spgxlogVacuumRoot);
toDelete = (OffsetNumber *) ptr;
if (!(record->xl_info & XLR_BKP_BLOCK_1))
{
buffer = XLogReadBuffer(xldata->node, SPGIST_HEAD_BLKNO, false);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
/* The tuple numbers are in order */
PageIndexMultiDelete(page, toDelete, xldata->nDelete);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
}
static void
ginRedoVacuumDataLeafPage(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogVacuumDataLeafPage *xlrec = (ginxlogVacuumDataLeafPage *) XLogRecGetData(record);
Buffer buffer;
Page page;
/* If we have a full-page image, restore it and we're done */
if (record->xl_info & XLR_BKP_BLOCK(0))
{
(void) RestoreBackupBlock(lsn, record, 0, false, false);
return;
}
buffer = XLogReadBuffer(xlrec->node, xlrec->blkno, false);
if (!BufferIsValid(buffer))
return;
page = (Page) BufferGetPage(buffer);
Assert(GinPageIsLeaf(page));
Assert(GinPageIsData(page));
if (lsn > PageGetLSN(page))
{
ginRedoRecompress(page, &xlrec->data);
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
static void
ginRedoCreatePTree(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogCreatePostingTree *data = (ginxlogCreatePostingTree *) XLogRecGetData(record);
char *ptr;
Buffer buffer;
Page page;
/* Backup blocks are not used in create_ptree records */
Assert(!(record->xl_info & XLR_BKP_BLOCK_MASK));
buffer = XLogReadBuffer(data->node, data->blkno, true);
Assert(BufferIsValid(buffer));
page = (Page) BufferGetPage(buffer);
GinInitBuffer(buffer, GIN_DATA | GIN_LEAF | GIN_COMPRESSED);
ptr = XLogRecGetData(record) + sizeof(ginxlogCreatePostingTree);
/* Place page data */
memcpy(GinDataLeafPageGetPostingList(page), ptr, data->size);
GinDataPageSetDataSize(page, data->size);
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
/*
* Replay the clearing of F_FOLLOW_RIGHT flag on a child page.
*
* Even if the WAL record includes a full-page image, we have to update the
* follow-right flag, because that change is not included in the full-page
* image. To be sure that the intermediate state with the wrong flag value is
* not visible to concurrent Hot Standby queries, this function handles
* restoring the full-page image as well as updating the flag. (Note that
* we never need to do anything else to the child page in the current WAL
* action.)
*/
static void
gistRedoClearFollowRight(XLogRecPtr lsn, XLogRecord *record, int block_index,
RelFileNode node, BlockNumber childblkno)
{
Buffer buffer;
Page page;
if (record->xl_info & XLR_BKP_BLOCK(block_index))
buffer = RestoreBackupBlock(lsn, record, block_index, false, true);
else
{
buffer = XLogReadBuffer(node, childblkno, false);
if (!BufferIsValid(buffer))
return; /* page was deleted, nothing to do */
}
page = (Page) BufferGetPage(buffer);
/*
* Note that we still update the page even if page LSN is equal to the LSN
* of this record, because the updated NSN is not included in the full
* page image.
*/
if (lsn >= PageGetLSN(page))
{
GistPageSetNSN(page, lsn);
GistClearFollowRight(page);
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
static void
forget_matching_split(Relation reln, RelFileNode node,
BlockNumber insertblk, OffsetNumber offnum,
bool is_root)
{
Buffer buffer;
Page page;
BTItem btitem;
BlockNumber rightblk;
List *l;
/* Get downlink TID from page */
buffer = XLogReadBuffer(false, reln, insertblk);
if (!BufferIsValid(buffer))
elog(PANIC, "forget_matching_split: block unfound");
page = (Page) BufferGetPage(buffer);
btitem = (BTItem) PageGetItem(page, PageGetItemId(page, offnum));
rightblk = ItemPointerGetBlockNumber(&(btitem->bti_itup.t_tid));
Assert(ItemPointerGetOffsetNumber(&(btitem->bti_itup.t_tid)) == P_HIKEY);
UnlockAndReleaseBuffer(buffer);
foreach(l, incomplete_splits)
{
bt_incomplete_split *split = (bt_incomplete_split *) lfirst(l);
if (RelFileNodeEquals(node, split->node) &&
rightblk == split->rightblk)
{
if (is_root != split->is_root)
elog(LOG, "forget_matching_split: fishy is_root data");
incomplete_splits = lremove(split, incomplete_splits);
break; /* need not look further */
}
}
static void
ginRedoInsertListPage(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogInsertListPage *data = (ginxlogInsertListPage *) XLogRecGetData(record);
Buffer buffer;
Page page;
OffsetNumber l,
off = FirstOffsetNumber;
int i,
tupsize;
IndexTuple tuples = (IndexTuple) (XLogRecGetData(record) + sizeof(ginxlogInsertListPage));
/* If we have a full-page image, restore it and we're done */
if (record->xl_info & XLR_BKP_BLOCK(0))
{
(void) RestoreBackupBlock(lsn, record, 0, false, false);
return;
}
buffer = XLogReadBuffer(data->node, data->blkno, true);
Assert(BufferIsValid(buffer));
page = BufferGetPage(buffer);
GinInitBuffer(buffer, GIN_LIST);
GinPageGetOpaque(page)->rightlink = data->rightlink;
if (data->rightlink == InvalidBlockNumber)
{
/* tail of sublist */
GinPageSetFullRow(page);
GinPageGetOpaque(page)->maxoff = 1;
}
else
{
GinPageGetOpaque(page)->maxoff = 0;
}
for (i = 0; i < data->ntuples; i++)
{
tupsize = IndexTupleSize(tuples);
l = PageAddItem(page, (Item) tuples, tupsize, off, false, false);
if (l == InvalidOffsetNumber)
elog(ERROR, "failed to add item to index page");
tuples = (IndexTuple) (((char *) tuples) + tupsize);
}
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
static void
ginRedoInsertListPage(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogInsertListPage *data = (ginxlogInsertListPage *) XLogRecGetData(record);
Buffer buffer;
Page page;
OffsetNumber l,
off = FirstOffsetNumber;
int i,
tupsize;
IndexTuple tuples = (IndexTuple) (XLogRecGetData(record) + sizeof(ginxlogInsertListPage));
/*
* Backup blocks are not used, we always re-initialize the page.
*/
Assert(!(record->xl_info & XLR_BKP_BLOCK_MASK));
buffer = XLogReadBuffer(data->node, data->blkno, true);
Assert(BufferIsValid(buffer));
page = BufferGetPage(buffer);
GinInitBuffer(buffer, GIN_LIST);
GinPageGetOpaque(page)->rightlink = data->rightlink;
if (data->rightlink == InvalidBlockNumber)
{
/* tail of sublist */
GinPageSetFullRow(page);
GinPageGetOpaque(page)->maxoff = 1;
}
else
{
GinPageGetOpaque(page)->maxoff = 0;
}
for (i = 0; i < data->ntuples; i++)
{
tupsize = IndexTupleSize(tuples);
l = PageAddItem(page, (Item) tuples, tupsize, off, false, false);
if (l == InvalidOffsetNumber)
elog(ERROR, "failed to add item to index page");
tuples = (IndexTuple) (((char *) tuples) + tupsize);
off++;
}
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
static void
bitmap_xlog_insert_bitmap_lastwords(bool redo, XLogRecPtr lsn, XLogRecord* record)
{
xl_bm_bitmap_lastwords *xlrec =
(xl_bm_bitmap_lastwords*) XLogRecGetData(record);
Relation reln;
reln = XLogOpenRelation(xlrec->bm_node);
if (!RelationIsValid(reln))
return;
if (redo)
{
Buffer lovBuffer;
Page lovPage;
BMLOVItem lovItem;
#ifdef BM_DEBUG
ereport(LOG, (errcode(LOG),
errmsg("call bitmap_xlog_insert_bitmap_lastwords: redo=%d\n",
redo)));
#endif
lovBuffer = XLogReadBuffer(false, reln, xlrec->bm_lov_blkno);
if (!BufferIsValid(lovBuffer))
elog(PANIC, "bm_insert_redo: block unfound: %d",
xlrec->bm_lov_blkno);
lovPage = BufferGetPage(lovBuffer);
if (XLByteLT(PageGetLSN(lovPage), lsn))
{
lovItem = (BMLOVItem)
PageGetItem(lovPage, PageGetItemId(lovPage, xlrec->bm_lov_offset));
lovItem->bm_last_compword = xlrec->bm_last_compword;
lovItem->bm_last_word = xlrec->bm_last_word;
lovItem->bm_last_two_headerbits = xlrec->bm_last_two_headerbits;
PageSetLSN(lovPage, lsn);
PageSetTLI(lovPage, ThisTimeLineID);
_bitmap_wrtbuf(lovBuffer);
}
else
_bitmap_relbuf(lovBuffer);
}
else
elog(PANIC, "bm_insert_undo: not implemented.");
}
static void
gistRedoCreateIndex(XLogRecPtr lsn, XLogRecord *record)
{
RelFileNode *node = (RelFileNode *) XLogRecGetData(record);
Buffer buffer;
Page page;
buffer = XLogReadBuffer(*node, GIST_ROOT_BLKNO, true);
Assert(BufferIsValid(buffer));
page = (Page) BufferGetPage(buffer);
GISTInitBuffer(buffer, F_LEAF);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
static void
bitmap_xlog_insert_meta(bool redo, XLogRecPtr lsn, XLogRecord* record)
{
xl_bm_metapage *xlrec = (xl_bm_metapage*) XLogRecGetData(record);
Relation reln;
reln = XLogOpenRelation(xlrec->bm_node);
if (!RelationIsValid(reln))
return;
if (redo)
{
Buffer metabuf;
BMMetaPage metapage;
#ifdef BM_DEBUG
ereport(LOG, (errcode(LOG),
errmsg("call bitmap_xlog_insert_meta: redo=%d\n", redo)));
#endif
metabuf = XLogReadBuffer(false, reln, BM_METAPAGE);
if (!BufferIsValid(metabuf))
elog(PANIC, "bm_insert_redo: block unfound: %d", BM_METAPAGE);
/* restore the page */
metapage = (BMMetaPage)BufferGetPage(metabuf);
if (XLByteLT(PageGetLSN(metapage), lsn))
{
PageSetLSN(metapage, lsn);
PageSetTLI(metapage, ThisTimeLineID);
_bitmap_wrtbuf(metabuf);
}
else
_bitmap_relbuf(metabuf);
}
else
elog(PANIC, "bm_insert_undo: not implemented.");
}
static void
ginRedoClearIncompleteSplit(XLogRecPtr lsn, RelFileNode node, BlockNumber blkno)
{
Buffer buffer;
Page page;
buffer = XLogReadBuffer(node, blkno, false);
if (!BufferIsValid(buffer))
return; /* page was deleted, nothing to do */
page = (Page) BufferGetPage(buffer);
if (lsn > PageGetLSN(page))
{
GinPageGetOpaque(page)->flags &= ~GIN_INCOMPLETE_SPLIT;
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
static void
gistRedoCreateIndex(XLogRecPtr lsn, XLogRecord *record)
{
RelFileNode *node = (RelFileNode *) XLogRecGetData(record);
Buffer buffer;
Page page;
/* Backup blocks are not used in create_index records */
Assert(!(record->xl_info & XLR_BKP_BLOCK_MASK));
buffer = XLogReadBuffer(*node, GIST_ROOT_BLKNO, true);
Assert(BufferIsValid(buffer));
page = (Page) BufferGetPage(buffer);
GISTInitBuffer(buffer, F_LEAF);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
/*
* This is functionally the same as heap_xlog_newpage.
*/
static void
ginRedoVacuumPage(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogVacuumPage *xlrec = (ginxlogVacuumPage *) XLogRecGetData(record);
char *blk = ((char *) xlrec) + sizeof(ginxlogVacuumPage);
Buffer buffer;
Page page;
Assert(xlrec->hole_offset < BLCKSZ);
Assert(xlrec->hole_length < BLCKSZ);
/* Backup blocks are not used, we'll re-initialize the page always. */
Assert(!(record->xl_info & XLR_BKP_BLOCK_MASK));
buffer = XLogReadBuffer(xlrec->node, xlrec->blkno, true);
if (!BufferIsValid(buffer))
return;
page = (Page) BufferGetPage(buffer);
if (xlrec->hole_length == 0)
{
memcpy((char *) page, blk, BLCKSZ);
}
else
{
memcpy((char *) page, blk, xlrec->hole_offset);
/* must zero-fill the hole */
MemSet((char *) page + xlrec->hole_offset, 0, xlrec->hole_length);
memcpy((char *) page + (xlrec->hole_offset + xlrec->hole_length),
blk + xlrec->hole_offset,
BLCKSZ - (xlrec->hole_offset + xlrec->hole_length));
}
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
static void
gistRedoPageDeleteRecord(XLogRecPtr lsn, XLogRecord *record)
{
gistxlogPageDelete *xldata = (gistxlogPageDelete *) XLogRecGetData(record);
Buffer buffer;
Page page;
/* nothing else to do if page was backed up (and no info to do it with) */
if (record->xl_info & XLR_BKP_BLOCK_1)
return;
buffer = XLogReadBuffer(xldata->node, xldata->blkno, false);
if (!BufferIsValid(buffer))
return;
page = (Page) BufferGetPage(buffer);
GistPageSetDeleted(page);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
static void
spgRedoSplitTuple(XLogRecPtr lsn, XLogRecord *record)
{
char *ptr = XLogRecGetData(record);
spgxlogSplitTuple *xldata = (spgxlogSplitTuple *) ptr;
SpGistInnerTuple prefixTuple;
SpGistInnerTuple postfixTuple;
Buffer buffer;
Page page;
/* we assume this is adequately aligned */
ptr += sizeof(spgxlogSplitTuple);
prefixTuple = (SpGistInnerTuple) ptr;
ptr += prefixTuple->size;
postfixTuple = (SpGistInnerTuple) ptr;
/* insert postfix tuple first to avoid dangling link */
if (xldata->blknoPostfix != xldata->blknoPrefix &&
!(record->xl_info & XLR_BKP_BLOCK_2))
{
buffer = XLogReadBuffer(xldata->node, xldata->blknoPostfix,
xldata->newPage);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (xldata->newPage)
SpGistInitBuffer(buffer, 0);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
addOrReplaceTuple(page, (Item) postfixTuple,
postfixTuple->size, xldata->offnumPostfix);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
/* now handle the original page */
if (!(record->xl_info & XLR_BKP_BLOCK_1))
{
buffer = XLogReadBuffer(xldata->node, xldata->blknoPrefix, false);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
PageIndexTupleDelete(page, xldata->offnumPrefix);
if (PageAddItem(page, (Item) prefixTuple, prefixTuple->size,
xldata->offnumPrefix, false, false) != xldata->offnumPrefix)
elog(ERROR, "failed to add item of size %u to SPGiST index page",
prefixTuple->size);
if (xldata->blknoPostfix == xldata->blknoPrefix)
addOrReplaceTuple(page, (Item) postfixTuple,
postfixTuple->size,
xldata->offnumPostfix);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
}
static void
ginRedoUpdateMetapage(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogUpdateMeta *data = (ginxlogUpdateMeta *) XLogRecGetData(record);
Buffer metabuffer;
Page metapage;
Buffer buffer;
/*
* Restore the metapage. This is essentially the same as a full-page
* image, so restore the metapage unconditionally without looking at the
* LSN, to avoid torn page hazards.
*/
metabuffer = XLogReadBuffer(data->node, GIN_METAPAGE_BLKNO, false);
if (!BufferIsValid(metabuffer))
return; /* assume index was deleted, nothing to do */
metapage = BufferGetPage(metabuffer);
memcpy(GinPageGetMeta(metapage), &data->metadata, sizeof(GinMetaPageData));
PageSetLSN(metapage, lsn);
MarkBufferDirty(metabuffer);
if (data->ntuples > 0)
{
/*
* insert into tail page
*/
if (record->xl_info & XLR_BKP_BLOCK(0))
(void) RestoreBackupBlock(lsn, record, 0, false, false);
else
{
buffer = XLogReadBuffer(data->node, data->metadata.tail, false);
if (BufferIsValid(buffer))
{
Page page = BufferGetPage(buffer);
if (lsn > PageGetLSN(page))
{
OffsetNumber l,
off = (PageIsEmpty(page)) ? FirstOffsetNumber :
OffsetNumberNext(PageGetMaxOffsetNumber(page));
int i,
tupsize;
IndexTuple tuples = (IndexTuple) (XLogRecGetData(record) + sizeof(ginxlogUpdateMeta));
for (i = 0; i < data->ntuples; i++)
{
tupsize = IndexTupleSize(tuples);
l = PageAddItem(page, (Item) tuples, tupsize, off, false, false);
if (l == InvalidOffsetNumber)
elog(ERROR, "failed to add item to index page");
tuples = (IndexTuple) (((char *) tuples) + tupsize);
off++;
}
/*
* Increase counter of heap tuples
*/
GinPageGetOpaque(page)->maxoff++;
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
}
else if (data->prevTail != InvalidBlockNumber)
{
/*
* New tail
*/
if (record->xl_info & XLR_BKP_BLOCK(0))
(void) RestoreBackupBlock(lsn, record, 0, false, false);
else
{
buffer = XLogReadBuffer(data->node, data->prevTail, false);
if (BufferIsValid(buffer))
{
Page page = BufferGetPage(buffer);
if (lsn > PageGetLSN(page))
{
GinPageGetOpaque(page)->rightlink = data->newRightlink;
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
}
UnlockReleaseBuffer(metabuffer);
}
static void
ginRedoDeletePage(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogDeletePage *data = (ginxlogDeletePage *) XLogRecGetData(record);
Buffer dbuffer;
Buffer pbuffer;
Buffer lbuffer;
Page page;
if (record->xl_info & XLR_BKP_BLOCK(0))
dbuffer = RestoreBackupBlock(lsn, record, 0, false, true);
else
{
dbuffer = XLogReadBuffer(data->node, data->blkno, false);
if (BufferIsValid(dbuffer))
{
page = BufferGetPage(dbuffer);
if (lsn > PageGetLSN(page))
{
Assert(GinPageIsData(page));
GinPageGetOpaque(page)->flags = GIN_DELETED;
PageSetLSN(page, lsn);
MarkBufferDirty(dbuffer);
}
}
}
if (record->xl_info & XLR_BKP_BLOCK(1))
pbuffer = RestoreBackupBlock(lsn, record, 1, false, true);
else
{
pbuffer = XLogReadBuffer(data->node, data->parentBlkno, false);
if (BufferIsValid(pbuffer))
{
page = BufferGetPage(pbuffer);
if (lsn > PageGetLSN(page))
{
Assert(GinPageIsData(page));
Assert(!GinPageIsLeaf(page));
GinPageDeletePostingItem(page, data->parentOffset);
PageSetLSN(page, lsn);
MarkBufferDirty(pbuffer);
}
}
}
if (record->xl_info & XLR_BKP_BLOCK(2))
(void) RestoreBackupBlock(lsn, record, 2, false, false);
else if (data->leftBlkno != InvalidBlockNumber)
{
lbuffer = XLogReadBuffer(data->node, data->leftBlkno, false);
if (BufferIsValid(lbuffer))
{
page = BufferGetPage(lbuffer);
if (lsn > PageGetLSN(page))
{
Assert(GinPageIsData(page));
GinPageGetOpaque(page)->rightlink = data->rightLink;
PageSetLSN(page, lsn);
MarkBufferDirty(lbuffer);
}
UnlockReleaseBuffer(lbuffer);
}
}
if (BufferIsValid(pbuffer))
UnlockReleaseBuffer(pbuffer);
if (BufferIsValid(dbuffer))
UnlockReleaseBuffer(dbuffer);
}
static void
spgRedoPickSplit(XLogRecPtr lsn, XLogRecord *record)
{
char *ptr = XLogRecGetData(record);
spgxlogPickSplit *xldata = (spgxlogPickSplit *) ptr;
SpGistInnerTuple innerTuple;
SpGistState state;
OffsetNumber *toDelete;
OffsetNumber *toInsert;
uint8 *leafPageSelect;
Buffer srcBuffer;
Buffer destBuffer;
Page page;
int bbi;
int i;
fillFakeState(&state, xldata->stateSrc);
ptr += MAXALIGN(sizeof(spgxlogPickSplit));
innerTuple = (SpGistInnerTuple) ptr;
ptr += innerTuple->size;
toDelete = (OffsetNumber *) ptr;
ptr += MAXALIGN(sizeof(OffsetNumber) * xldata->nDelete);
toInsert = (OffsetNumber *) ptr;
ptr += MAXALIGN(sizeof(OffsetNumber) * xldata->nInsert);
leafPageSelect = (uint8 *) ptr;
ptr += MAXALIGN(sizeof(uint8) * xldata->nInsert);
/* now ptr points to the list of leaf tuples */
/*
* It's a bit tricky to identify which pages have been handled as
* full-page images, so we explicitly count each referenced buffer.
*/
bbi = 0;
if (xldata->blknoSrc == SPGIST_HEAD_BLKNO)
{
/* when splitting root, we touch it only in the guise of new inner */
srcBuffer = InvalidBuffer;
}
else if (xldata->initSrc)
{
/* just re-init the source page */
srcBuffer = XLogReadBuffer(xldata->node, xldata->blknoSrc, true);
Assert(BufferIsValid(srcBuffer));
page = (Page) BufferGetPage(srcBuffer);
SpGistInitBuffer(srcBuffer, SPGIST_LEAF);
/* don't update LSN etc till we're done with it */
}
else
{
/* delete the specified tuples from source page */
if (!(record->xl_info & XLR_SET_BKP_BLOCK(bbi)))
{
srcBuffer = XLogReadBuffer(xldata->node, xldata->blknoSrc, false);
if (BufferIsValid(srcBuffer))
{
page = BufferGetPage(srcBuffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
/*
* We have it a bit easier here than in doPickSplit(),
* because we know the inner tuple's location already,
* so we can inject the correct redirection tuple now.
*/
if (!state.isBuild)
spgPageIndexMultiDelete(&state, page,
toDelete, xldata->nDelete,
SPGIST_REDIRECT,
SPGIST_PLACEHOLDER,
xldata->blknoInner,
xldata->offnumInner);
else
spgPageIndexMultiDelete(&state, page,
toDelete, xldata->nDelete,
SPGIST_PLACEHOLDER,
SPGIST_PLACEHOLDER,
InvalidBlockNumber,
InvalidOffsetNumber);
/* don't update LSN etc till we're done with it */
}
}
}
else
srcBuffer = InvalidBuffer;
bbi++;
}
/* try to access dest page if any */
if (xldata->blknoDest == InvalidBlockNumber)
{
destBuffer = InvalidBuffer;
}
else if (xldata->initDest)
{
/* just re-init the dest page */
destBuffer = XLogReadBuffer(xldata->node, xldata->blknoDest, true);
Assert(BufferIsValid(destBuffer));
page = (Page) BufferGetPage(destBuffer);
SpGistInitBuffer(destBuffer, SPGIST_LEAF);
/* don't update LSN etc till we're done with it */
}
else
{
if (!(record->xl_info & XLR_SET_BKP_BLOCK(bbi)))
destBuffer = XLogReadBuffer(xldata->node, xldata->blknoDest, false);
else
destBuffer = InvalidBuffer;
bbi++;
}
/* restore leaf tuples to src and/or dest page */
for (i = 0; i < xldata->nInsert; i++)
{
SpGistLeafTuple lt = (SpGistLeafTuple) ptr;
Buffer leafBuffer;
ptr += lt->size;
leafBuffer = leafPageSelect[i] ? destBuffer : srcBuffer;
if (!BufferIsValid(leafBuffer))
continue; /* no need to touch this page */
page = BufferGetPage(leafBuffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
addOrReplaceTuple(page, (Item) lt, lt->size, toInsert[i]);
}
}
/* Now update src and dest page LSNs */
if (BufferIsValid(srcBuffer))
{
page = BufferGetPage(srcBuffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(srcBuffer);
}
UnlockReleaseBuffer(srcBuffer);
}
if (BufferIsValid(destBuffer))
{
page = BufferGetPage(destBuffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(destBuffer);
}
UnlockReleaseBuffer(destBuffer);
}
/* restore new inner tuple */
if (!(record->xl_info & XLR_SET_BKP_BLOCK(bbi)))
{
Buffer buffer = XLogReadBuffer(xldata->node, xldata->blknoInner,
xldata->initInner);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (xldata->initInner)
SpGistInitBuffer(buffer, 0);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
addOrReplaceTuple(page, (Item) innerTuple, innerTuple->size,
xldata->offnumInner);
/* if inner is also parent, update link while we're here */
if (xldata->blknoInner == xldata->blknoParent)
{
SpGistInnerTuple parent;
parent = (SpGistInnerTuple) PageGetItem(page,
PageGetItemId(page, xldata->offnumParent));
spgUpdateNodeLink(parent, xldata->nodeI,
xldata->blknoInner, xldata->offnumInner);
}
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
bbi++;
/* update parent downlink, unless we did it above */
if (xldata->blknoParent == InvalidBlockNumber)
{
/* no parent cause we split the root */
Assert(xldata->blknoInner == SPGIST_HEAD_BLKNO);
}
else if (xldata->blknoInner != xldata->blknoParent)
{
if (!(record->xl_info & XLR_SET_BKP_BLOCK(bbi)))
{
Buffer buffer = XLogReadBuffer(xldata->node, xldata->blknoParent, false);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
SpGistInnerTuple parent;
parent = (SpGistInnerTuple) PageGetItem(page,
PageGetItemId(page, xldata->offnumParent));
spgUpdateNodeLink(parent, xldata->nodeI,
xldata->blknoInner, xldata->offnumInner);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
}
}
static void
ginRedoSplit(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogSplit *data = (ginxlogSplit *) XLogRecGetData(record);
Buffer lbuffer,
rbuffer;
Page lpage,
rpage;
uint32 flags;
uint32 lflags,
rflags;
char *payload;
bool isLeaf = (data->flags & GIN_INSERT_ISLEAF) != 0;
bool isData = (data->flags & GIN_INSERT_ISDATA) != 0;
bool isRoot = (data->flags & GIN_SPLIT_ROOT) != 0;
payload = XLogRecGetData(record) + sizeof(ginxlogSplit);
/*
* First clear incomplete-split flag on child page if this finishes a
* split
*/
if (!isLeaf)
{
if (record->xl_info & XLR_BKP_BLOCK(0))
(void) RestoreBackupBlock(lsn, record, 0, false, false);
else
ginRedoClearIncompleteSplit(lsn, data->node, data->leftChildBlkno);
}
flags = 0;
if (isLeaf)
flags |= GIN_LEAF;
if (isData)
flags |= GIN_DATA;
if (isLeaf && isData)
flags |= GIN_COMPRESSED;
lflags = rflags = flags;
if (!isRoot)
lflags |= GIN_INCOMPLETE_SPLIT;
lbuffer = XLogReadBuffer(data->node, data->lblkno, true);
Assert(BufferIsValid(lbuffer));
lpage = (Page) BufferGetPage(lbuffer);
GinInitBuffer(lbuffer, lflags);
rbuffer = XLogReadBuffer(data->node, data->rblkno, true);
Assert(BufferIsValid(rbuffer));
rpage = (Page) BufferGetPage(rbuffer);
GinInitBuffer(rbuffer, rflags);
GinPageGetOpaque(lpage)->rightlink = BufferGetBlockNumber(rbuffer);
GinPageGetOpaque(rpage)->rightlink = isRoot ? InvalidBlockNumber : data->rrlink;
/* Do the tree-type specific portion to restore the page contents */
if (isData)
ginRedoSplitData(lpage, rpage, payload);
else
ginRedoSplitEntry(lpage, rpage, payload);
PageSetLSN(rpage, lsn);
MarkBufferDirty(rbuffer);
PageSetLSN(lpage, lsn);
MarkBufferDirty(lbuffer);
if (isRoot)
{
BlockNumber rootBlkno = data->rrlink;
Buffer rootBuf = XLogReadBuffer(data->node, rootBlkno, true);
Page rootPage = BufferGetPage(rootBuf);
GinInitBuffer(rootBuf, flags & ~GIN_LEAF & ~GIN_COMPRESSED);
if (isData)
{
Assert(rootBlkno != GIN_ROOT_BLKNO);
ginDataFillRoot(NULL, BufferGetPage(rootBuf),
BufferGetBlockNumber(lbuffer),
BufferGetPage(lbuffer),
BufferGetBlockNumber(rbuffer),
BufferGetPage(rbuffer));
}
else
{
Assert(rootBlkno == GIN_ROOT_BLKNO);
ginEntryFillRoot(NULL, BufferGetPage(rootBuf),
BufferGetBlockNumber(lbuffer),
BufferGetPage(lbuffer),
BufferGetBlockNumber(rbuffer),
BufferGetPage(rbuffer));
}
PageSetLSN(rootPage, lsn);
MarkBufferDirty(rootBuf);
UnlockReleaseBuffer(rootBuf);
}
UnlockReleaseBuffer(rbuffer);
UnlockReleaseBuffer(lbuffer);
}
static void
spgRedoVacuumLeaf(XLogRecPtr lsn, XLogRecord *record)
{
char *ptr = XLogRecGetData(record);
spgxlogVacuumLeaf *xldata = (spgxlogVacuumLeaf *) ptr;
OffsetNumber *toDead;
OffsetNumber *toPlaceholder;
OffsetNumber *moveSrc;
OffsetNumber *moveDest;
OffsetNumber *chainSrc;
OffsetNumber *chainDest;
SpGistState state;
Buffer buffer;
Page page;
int i;
fillFakeState(&state, xldata->stateSrc);
ptr += sizeof(spgxlogVacuumLeaf);
toDead = (OffsetNumber *) ptr;
ptr += sizeof(OffsetNumber) * xldata->nDead;
toPlaceholder = (OffsetNumber *) ptr;
ptr += sizeof(OffsetNumber) * xldata->nPlaceholder;
moveSrc = (OffsetNumber *) ptr;
ptr += sizeof(OffsetNumber) * xldata->nMove;
moveDest = (OffsetNumber *) ptr;
ptr += sizeof(OffsetNumber) * xldata->nMove;
chainSrc = (OffsetNumber *) ptr;
ptr += sizeof(OffsetNumber) * xldata->nChain;
chainDest = (OffsetNumber *) ptr;
if (!(record->xl_info & XLR_BKP_BLOCK_1))
{
buffer = XLogReadBuffer(xldata->node, xldata->blkno, false);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
spgPageIndexMultiDelete(&state, page,
toDead, xldata->nDead,
SPGIST_DEAD, SPGIST_DEAD,
InvalidBlockNumber,
InvalidOffsetNumber);
spgPageIndexMultiDelete(&state, page,
toPlaceholder, xldata->nPlaceholder,
SPGIST_PLACEHOLDER, SPGIST_PLACEHOLDER,
InvalidBlockNumber,
InvalidOffsetNumber);
/* see comments in vacuumLeafPage() */
for (i = 0; i < xldata->nMove; i++)
{
ItemId idSrc = PageGetItemId(page, moveSrc[i]);
ItemId idDest = PageGetItemId(page, moveDest[i]);
ItemIdData tmp;
tmp = *idSrc;
*idSrc = *idDest;
*idDest = tmp;
}
spgPageIndexMultiDelete(&state, page,
moveSrc, xldata->nMove,
SPGIST_PLACEHOLDER, SPGIST_PLACEHOLDER,
InvalidBlockNumber,
InvalidOffsetNumber);
for (i = 0; i < xldata->nChain; i++)
{
SpGistLeafTuple lt;
lt = (SpGistLeafTuple) PageGetItem(page,
PageGetItemId(page, chainSrc[i]));
Assert(lt->tupstate == SPGIST_LIVE);
lt->nextOffset = chainDest[i];
}
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
}
static void
ginRedoInsert(XLogRecPtr lsn, XLogRecord *record)
{
ginxlogInsert *data = (ginxlogInsert *) XLogRecGetData(record);
Buffer buffer;
Page page;
char *payload;
BlockNumber leftChildBlkno = InvalidBlockNumber;
BlockNumber rightChildBlkno = InvalidBlockNumber;
bool isLeaf = (data->flags & GIN_INSERT_ISLEAF) != 0;
payload = XLogRecGetData(record) + sizeof(ginxlogInsert);
/*
* First clear incomplete-split flag on child page if this finishes a
* split.
*/
if (!isLeaf)
{
leftChildBlkno = BlockIdGetBlockNumber((BlockId) payload);
payload += sizeof(BlockIdData);
rightChildBlkno = BlockIdGetBlockNumber((BlockId) payload);
payload += sizeof(BlockIdData);
if (record->xl_info & XLR_BKP_BLOCK(0))
(void) RestoreBackupBlock(lsn, record, 0, false, false);
else
ginRedoClearIncompleteSplit(lsn, data->node, leftChildBlkno);
}
/* If we have a full-page image, restore it and we're done */
if (record->xl_info & XLR_BKP_BLOCK(isLeaf ? 0 : 1))
{
(void) RestoreBackupBlock(lsn, record, isLeaf ? 0 : 1, false, false);
return;
}
buffer = XLogReadBuffer(data->node, data->blkno, false);
if (!BufferIsValid(buffer))
return; /* page was deleted, nothing to do */
page = (Page) BufferGetPage(buffer);
if (lsn > PageGetLSN(page))
{
/* How to insert the payload is tree-type specific */
if (data->flags & GIN_INSERT_ISDATA)
{
Assert(GinPageIsData(page));
ginRedoInsertData(buffer, isLeaf, rightChildBlkno, payload);
}
else
{
Assert(!GinPageIsData(page));
ginRedoInsertEntry(buffer, isLeaf, rightChildBlkno, payload);
}
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
static void
spgRedoVacuumRedirect(XLogRecPtr lsn, XLogRecord *record)
{
char *ptr = XLogRecGetData(record);
spgxlogVacuumRedirect *xldata = (spgxlogVacuumRedirect *) ptr;
OffsetNumber *itemToPlaceholder;
Buffer buffer;
Page page;
ptr += sizeof(spgxlogVacuumRedirect);
itemToPlaceholder = (OffsetNumber *) ptr;
if (!(record->xl_info & XLR_BKP_BLOCK_1))
{
buffer = XLogReadBuffer(xldata->node, xldata->blkno, false);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
SpGistPageOpaque opaque = SpGistPageGetOpaque(page);
int i;
/* Convert redirect pointers to plain placeholders */
for (i = 0; i < xldata->nToPlaceholder; i++)
{
SpGistDeadTuple dt;
dt = (SpGistDeadTuple) PageGetItem(page,
PageGetItemId(page, itemToPlaceholder[i]));
Assert(dt->tupstate == SPGIST_REDIRECT);
dt->tupstate = SPGIST_PLACEHOLDER;
ItemPointerSetInvalid(&dt->pointer);
}
Assert(opaque->nRedirection >= xldata->nToPlaceholder);
opaque->nRedirection -= xldata->nToPlaceholder;
opaque->nPlaceholder += xldata->nToPlaceholder;
/* Remove placeholder tuples at end of page */
if (xldata->firstPlaceholder != InvalidOffsetNumber)
{
int max = PageGetMaxOffsetNumber(page);
OffsetNumber *toDelete;
toDelete = palloc(sizeof(OffsetNumber) * max);
for (i = xldata->firstPlaceholder; i <= max; i++)
toDelete[i - xldata->firstPlaceholder] = i;
i = max - xldata->firstPlaceholder + 1;
Assert(opaque->nPlaceholder >= i);
opaque->nPlaceholder -= i;
/* The array is sorted, so can use PageIndexMultiDelete */
PageIndexMultiDelete(page, toDelete, i);
pfree(toDelete);
}
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
}
/*
* redo any page update (except page split)
*/
static void
gistRedoPageUpdateRecord(XLogRecPtr lsn, XLogRecord *record)
{
char *begin = XLogRecGetData(record);
gistxlogPageUpdate *xldata = (gistxlogPageUpdate *) begin;
Buffer buffer;
Page page;
char *data;
if (BlockNumberIsValid(xldata->leftchild))
gistRedoClearFollowRight(xldata->node, lsn, xldata->leftchild);
/* nothing more to do if page was backed up (and no info to do it with) */
if (record->xl_info & XLR_BKP_BLOCK_1)
return;
buffer = XLogReadBuffer(xldata->node, xldata->blkno, false);
if (!BufferIsValid(buffer))
return;
page = (Page) BufferGetPage(buffer);
if (XLByteLE(lsn, PageGetLSN(page)))
{
UnlockReleaseBuffer(buffer);
return;
}
data = begin + sizeof(gistxlogPageUpdate);
/* Delete old tuples */
if (xldata->ntodelete > 0)
{
int i;
OffsetNumber *todelete = (OffsetNumber *) data;
data += sizeof(OffsetNumber) * xldata->ntodelete;
for (i = 0; i < xldata->ntodelete; i++)
PageIndexTupleDelete(page, todelete[i]);
if (GistPageIsLeaf(page))
GistMarkTuplesDeleted(page);
}
/* add tuples */
if (data - begin < record->xl_len)
{
OffsetNumber off = (PageIsEmpty(page)) ? FirstOffsetNumber :
OffsetNumberNext(PageGetMaxOffsetNumber(page));
while (data - begin < record->xl_len)
{
IndexTuple itup = (IndexTuple) data;
Size sz = IndexTupleSize(itup);
OffsetNumber l;
data += sz;
l = PageAddItem(page, (Item) itup, sz, off, false, false);
if (l == InvalidOffsetNumber)
elog(ERROR, "failed to add item to GiST index page, size %d bytes",
(int) sz);
off++;
}
}
else
{
/*
* special case: leafpage, nothing to insert, nothing to delete, then
* vacuum marks page
*/
if (GistPageIsLeaf(page) && xldata->ntodelete == 0)
GistClearTuplesDeleted(page);
}
if (!GistPageIsLeaf(page) && PageGetMaxOffsetNumber(page) == InvalidOffsetNumber && xldata->blkno == GIST_ROOT_BLKNO)
/*
* all links on non-leaf root page was deleted by vacuum full, so root
* page becomes a leaf
*/
GistPageSetLeaf(page);
GistPageGetOpaque(page)->rightlink = InvalidBlockNumber;
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
static void
spgRedoAddLeaf(XLogRecPtr lsn, XLogRecord *record)
{
char *ptr = XLogRecGetData(record);
spgxlogAddLeaf *xldata = (spgxlogAddLeaf *) ptr;
SpGistLeafTuple leafTuple;
Buffer buffer;
Page page;
/* we assume this is adequately aligned */
ptr += sizeof(spgxlogAddLeaf);
leafTuple = (SpGistLeafTuple) ptr;
if (!(record->xl_info & XLR_BKP_BLOCK_1))
{
buffer = XLogReadBuffer(xldata->node, xldata->blknoLeaf,
xldata->newPage);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (xldata->newPage)
SpGistInitBuffer(buffer, SPGIST_LEAF);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
/* insert new tuple */
if (xldata->offnumLeaf != xldata->offnumHeadLeaf)
{
/* normal cases, tuple was added by SpGistPageAddNewItem */
addOrReplaceTuple(page, (Item) leafTuple, leafTuple->size,
xldata->offnumLeaf);
/* update head tuple's chain link if needed */
if (xldata->offnumHeadLeaf != InvalidOffsetNumber)
{
SpGistLeafTuple head;
head = (SpGistLeafTuple) PageGetItem(page,
PageGetItemId(page, xldata->offnumHeadLeaf));
Assert(head->nextOffset == leafTuple->nextOffset);
head->nextOffset = xldata->offnumLeaf;
}
}
else
{
/* replacing a DEAD tuple */
PageIndexTupleDelete(page, xldata->offnumLeaf);
if (PageAddItem(page,
(Item) leafTuple, leafTuple->size,
xldata->offnumLeaf, false, false) != xldata->offnumLeaf)
elog(ERROR, "failed to add item of size %u to SPGiST index page",
leafTuple->size);
}
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
/* update parent downlink if necessary */
if (xldata->blknoParent != InvalidBlockNumber &&
!(record->xl_info & XLR_BKP_BLOCK_2))
{
buffer = XLogReadBuffer(xldata->node, xldata->blknoParent, false);
if (BufferIsValid(buffer))
{
page = BufferGetPage(buffer);
if (!XLByteLE(lsn, PageGetLSN(page)))
{
SpGistInnerTuple tuple;
tuple = (SpGistInnerTuple) PageGetItem(page,
PageGetItemId(page, xldata->offnumParent));
spgUpdateNodeLink(tuple, xldata->nodeI,
xldata->blknoLeaf, xldata->offnumLeaf);
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
}
UnlockReleaseBuffer(buffer);
}
}
}
static void
gistRedoPageSplitRecord(XLogRecPtr lsn, XLogRecord *record)
{
gistxlogPageSplit *xldata = (gistxlogPageSplit *) XLogRecGetData(record);
PageSplitRecord xlrec;
Buffer buffer;
Page page;
int i;
bool isrootsplit = false;
if (BlockNumberIsValid(xldata->leftchild))
gistRedoClearFollowRight(xldata->node, lsn, xldata->leftchild);
decodePageSplitRecord(&xlrec, record);
/* loop around all pages */
for (i = 0; i < xlrec.data->npage; i++)
{
NewPage *newpage = xlrec.page + i;
int flags;
if (newpage->header->blkno == GIST_ROOT_BLKNO)
{
Assert(i == 0);
isrootsplit = true;
}
buffer = XLogReadBuffer(xlrec.data->node, newpage->header->blkno, true);
Assert(BufferIsValid(buffer));
page = (Page) BufferGetPage(buffer);
/* ok, clear buffer */
if (xlrec.data->origleaf && newpage->header->blkno != GIST_ROOT_BLKNO)
flags = F_LEAF;
else
flags = 0;
GISTInitBuffer(buffer, flags);
/* and fill it */
gistfillbuffer(page, newpage->itup, newpage->header->num, FirstOffsetNumber);
if (newpage->header->blkno == GIST_ROOT_BLKNO)
{
GistPageGetOpaque(page)->rightlink = InvalidBlockNumber;
GistPageGetOpaque(page)->nsn = xldata->orignsn;
GistClearFollowRight(page);
}
else
{
if (i < xlrec.data->npage - 1)
GistPageGetOpaque(page)->rightlink = xlrec.page[i + 1].header->blkno;
else
GistPageGetOpaque(page)->rightlink = xldata->origrlink;
GistPageGetOpaque(page)->nsn = xldata->orignsn;
if (i < xlrec.data->npage - 1 && !isrootsplit)
GistMarkFollowRight(page);
else
GistClearFollowRight(page);
}
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer);
}
}
