/*
* MUST BE CALLED ONLY ON RECOVERY.
*
* Check if exists valid (inserted by not aborted xaction) heap tuple
* for given item pointer
*/
bool
XLogIsValidTuple(RelFileNode hnode, ItemPointer iptr)
{
Relation reln;
Buffer buffer;
Page page;
ItemId lp;
HeapTupleHeader htup;
reln = XLogOpenRelation(false, RM_HEAP_ID, hnode);
if (!RelationIsValid(reln))
return (false);
buffer = ReadBuffer(reln, ItemPointerGetBlockNumber(iptr));
if (!BufferIsValid(buffer))
return (false);
LockBuffer(buffer, BUFFER_LOCK_SHARE);
page = (Page) BufferGetPage(buffer);
if (PageIsNew((PageHeader) page) ||
ItemPointerGetOffsetNumber(iptr) > PageGetMaxOffsetNumber(page))
{
UnlockAndReleaseBuffer(buffer);
return (false);
}
if (PageGetSUI(page) != ThisStartUpID)
{
Assert(PageGetSUI(page) < ThisStartUpID);
UnlockAndReleaseBuffer(buffer);
return (true);
}
lp = PageGetItemId(page, ItemPointerGetOffsetNumber(iptr));
if (!ItemIdIsUsed(lp) || ItemIdDeleted(lp))
{
UnlockAndReleaseBuffer(buffer);
return (false);
}
htup = (HeapTupleHeader) PageGetItem(page, lp);
/* MUST CHECK WASN'T TUPLE INSERTED IN PREV STARTUP */
if (!(htup->t_infomask & HEAP_XMIN_COMMITTED))
{
if (htup->t_infomask & HEAP_XMIN_INVALID ||
(htup->t_infomask & HEAP_MOVED_IN &&
TransactionIdDidAbort(HeapTupleHeaderGetXvac(htup))) ||
TransactionIdDidAbort(HeapTupleHeaderGetXmin(htup)))
{
UnlockAndReleaseBuffer(buffer);
return (false);
}
}
UnlockAndReleaseBuffer(buffer);
return (true);
}
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.");
}
/*
* Check if specified heap tuple was inserted by given
* xaction/command and return
*
* - -1 if not
* - 0 if there is no tuple at all
* - 1 if yes
*/
int
XLogIsOwnerOfTuple(RelFileNode hnode, ItemPointer iptr,
TransactionId xid, CommandId cid)
{
Relation reln;
Buffer buffer;
Page page;
ItemId lp;
HeapTupleHeader htup;
reln = XLogOpenRelation(false, RM_HEAP_ID, hnode);
if (!RelationIsValid(reln))
return (0);
buffer = ReadBuffer(reln, ItemPointerGetBlockNumber(iptr));
if (!BufferIsValid(buffer))
return (0);
LockBuffer(buffer, BUFFER_LOCK_SHARE);
page = (Page) BufferGetPage(buffer);
if (PageIsNew((PageHeader) page) ||
ItemPointerGetOffsetNumber(iptr) > PageGetMaxOffsetNumber(page))
{
UnlockAndReleaseBuffer(buffer);
return (0);
}
lp = PageGetItemId(page, ItemPointerGetOffsetNumber(iptr));
if (!ItemIdIsUsed(lp) || ItemIdDeleted(lp))
{
UnlockAndReleaseBuffer(buffer);
return (0);
}
htup = (HeapTupleHeader) PageGetItem(page, lp);
Assert(PageGetSUI(page) == ThisStartUpID);
if (!TransactionIdEquals(HeapTupleHeaderGetXmin(htup), xid) ||
HeapTupleHeaderGetCmin(htup) != cid)
{
UnlockAndReleaseBuffer(buffer);
return (-1);
}
UnlockAndReleaseBuffer(buffer);
return (1);
}
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
bitmap_xlog_insert_bitmap(bool redo, XLogRecPtr lsn, XLogRecord* record)
{
xl_bm_bitmappage *xlrec = (xl_bm_bitmappage*) XLogRecGetData(record);
Relation reln;
reln = XLogOpenRelation(xlrec->bm_node);
if (!RelationIsValid(reln))
return;
if (redo)
{
Buffer bitmapBuffer;
Page bitmapPage;
BMBitmapOpaque bitmapPageOpaque ;
bitmapBuffer = XLogReadBuffer(false, reln, xlrec->bm_bitmap_blkno);
if (!BufferIsValid(bitmapBuffer))
elog(PANIC, "bm_insert_redo: block unfound: %d",
xlrec->bm_bitmap_blkno);
bitmapPage = BufferGetPage(bitmapBuffer);
if (XLByteLT(PageGetLSN(bitmapPage), lsn))
{
bitmapPageOpaque = (BMBitmapOpaque)PageGetSpecialPointer(bitmapPage);;
#ifdef BM_DEBUG
ereport(LOG, (errcode(LOG),
errmsg("call bitmap_xlog_insert_bitmap: redo=%d, blkno=%d, isOpaque=%d, words_used=%d, lastword=%d, next_blkno=%d\n", redo, xlrec->bm_bitmap_blkno, xlrec->bm_isOpaque, xlrec->bm_lastword_pos, xlrec->bm_lastword_in_block, xlrec->bm_next_blkno)));
#endif
if (xlrec->bm_isOpaque)
{
if (bitmapPageOpaque->bm_bitmap_next != InvalidBlockNumber)
elog(PANIC,
"%s next bitmap page for blkno %d is already set",
"bm_insert_redo: ",
xlrec->bm_bitmap_blkno);
Assert(bitmapPageOpaque->bm_hrl_words_used ==
BM_NUM_OF_HRL_WORDS_PER_PAGE);
bitmapPageOpaque->bm_bitmap_next = xlrec->bm_next_blkno;
}
else
{
BMBitmap bitmap;
if (bitmapPageOpaque->bm_hrl_words_used !=
xlrec->bm_lastword_pos - 1)
elog(PANIC,
"bm_insert_redo: a bit has been inserted in the pos %d",
xlrec->bm_lastword_pos);
Assert (xlrec->bm_lastword_in_block != 0);
bitmap = (BMBitmap) PageGetContents(bitmapPage);
bitmap->bm_headerWords
[(bitmapPageOpaque->bm_hrl_words_used/BM_HRL_WORD_SIZE)] |=
(1<<(BM_HRL_WORD_SIZE-1-
(bitmapPageOpaque->bm_hrl_words_used%BM_HRL_WORD_SIZE)));
bitmap->bm_contentWords[bitmapPageOpaque->bm_hrl_words_used] =
xlrec->bm_lastword_in_block;
bitmapPageOpaque->bm_hrl_words_used ++;
}
PageSetLSN(bitmapPage, lsn);
PageSetTLI(bitmapPage, ThisTimeLineID);
_bitmap_wrtbuf(bitmapBuffer);
}
else
_bitmap_relbuf(bitmapBuffer);
}
else
elog(PANIC, "bm_insert_undo: not implemented.");
}
static void
bitmap_xlog_insert_lovmeta(bool redo, XLogRecPtr lsn, XLogRecord* record)
{
xl_bm_lovmetapage *xlrec = (xl_bm_lovmetapage*)XLogRecGetData(record);
Relation reln;
reln = XLogOpenRelation(xlrec->bm_node);
/* reln = XLogOpenRelation(redo, RM_BITMAP_ID, xlrec->bm_node);*/
if (!RelationIsValid(reln))
return;
if (redo)
{
Buffer lovMetabuf;
Page lovMetapage;
BMLOVMetaItem copyMetaItems, metaItems;
#ifdef BM_DEBUG
ereport(LOG, (errcode(LOG),
errmsg("call bitmap_xlog_insert_lovmeta: redo=%d\n", redo)));
#endif
lovMetabuf = XLogReadBuffer(false, reln, BM_LOV_STARTPAGE-1);
if (!BufferIsValid(lovMetabuf))
elog(PANIC, "bm_insert_redo: block unfound: %d -- at (%d,%d,%d)",
BM_LOV_STARTPAGE-1, xlrec->bm_node.spcNode,
xlrec->bm_node.dbNode, xlrec->bm_node.relNode);
lovMetapage = BufferGetPage(lovMetabuf);
if (XLByteLT(PageGetLSN(lovMetapage), lsn))
{
#ifdef BM_DEBUG
uint32 attno;
#endif
copyMetaItems = (BMLOVMetaItem)PageGetContents(lovMetapage);
metaItems = (BMLOVMetaItem)
((char*)xlrec + sizeof(xl_bm_lovmetapage));
memcpy(copyMetaItems, metaItems,
xlrec->bm_num_of_attrs * sizeof(BMLOVMetaItemData));
#ifdef BM_DEBUG
for(attno=0; attno<xlrec->bm_num_of_attrs; attno++)
elog(LOG, "metaItems=%d, %d, %d",
copyMetaItems[attno].bm_lov_heapId,
copyMetaItems[attno].bm_lov_indexId,
copyMetaItems[attno].bm_lov_lastpage);
#endif
PageSetLSN(lovMetapage, lsn);
PageSetTLI(lovMetapage, ThisTimeLineID);
_bitmap_wrtbuf(lovMetabuf);
}
else
_bitmap_relbuf(lovMetabuf);
}
else
elog(PANIC, "bm_insert_undo: not implemented.");
}
static void
bitmap_xlog_newpage(bool redo, XLogRecPtr lsn, XLogRecord *record)
{
xl_bm_newpage *xlrec = (xl_bm_newpage*) XLogRecGetData(record);
Relation reln;
Page page;
uint8 info;
/* xl_bm_metapage *xlrecMeta = (xl_bm_metapage*)
((char*)xlrec+sizeof(xl_bm_newpage)); */
info = record->xl_info & ~XLR_INFO_MASK;
ereport(DEBUG1, (errmsg_internal("into --> XLogOpenRelation")));
reln = XLogOpenRelation(xlrec->bm_node);
ereport(DEBUG1, (errmsg_internal("done --> XLogOpenRelation")));
if (!RelationIsValid(reln))
return;
ereport(DEBUG1, (errmsg_internal("crash1")));
if (redo)
{
Buffer buffer;
#ifdef BM_DEBUG
ereport(LOG, (errcode(LOG),
errmsg("call bitmap_xlog_newpage: redo=%d, info=%x\n", redo, info)));
#endif
buffer = XLogReadBuffer(true, reln, xlrec->bm_new_blkno);
if (!BufferIsValid(buffer))
elog(PANIC, "bm_insert_redo: block unfound: %d",
xlrec->bm_new_blkno);
page = BufferGetPage(buffer);
if (XLByteLT(PageGetLSN(page), lsn))
{
Buffer metabuf;
BMMetaPage metapage;
switch (info)
{
case XLOG_BITMAP_INSERT_NEWLOV:
_bitmap_lovpageinit(reln, buffer);
break;
case XLOG_BITMAP_INSERT_NEWLOVMETA:
_bitmap_lovmetapageinit(reln, buffer);
break;
case XLOG_BITMAP_INSERT_NEWBITMAP:
_bitmap_bitmappageinit(reln, buffer);
break;
default:
elog(PANIC, "bitmap_redo: unknown newpage op code %u", info);
}
PageSetLSN(page, lsn);
PageSetTLI(page, ThisTimeLineID);
_bitmap_wrtbuf(buffer);
metabuf = XLogReadBuffer(true, reln, BM_METAPAGE);
if (!BufferIsValid(metabuf))
elog(PANIC, "bm_insert_redo: block unfound: %d", BM_METAPAGE);
metapage = (BMMetaPage)BufferGetPage(metabuf);
if (XLByteLT(PageGetLSN(metapage), lsn))
{
PageSetLSN(metapage, lsn);
PageSetTLI(metapage, ThisTimeLineID);
_bitmap_wrtbuf(metabuf);
}
else
_bitmap_relbuf(metabuf);
}
else {
_bitmap_relbuf(buffer);
}
}
else
elog(PANIC, "bm_insert_undo: not implemented.");
/* elog(PANIC, "call completely done for _bitmap_lovmetapageinit from bitmap_xlog_newpage[src/backend/access/bitmap/bitmapxlog.c]", info); */
}
static void
bitmap_xlog_insert_lovitem(bool redo, XLogRecPtr lsn, XLogRecord* record)
{
xl_bm_lovitem *xlrec = (xl_bm_lovitem*) XLogRecGetData(record);
Relation reln;
reln = XLogOpenRelation(xlrec->bm_node);
if (!RelationIsValid(reln))
return;
if (redo)
{
Buffer lovBuffer;
Page lovPage;
#ifdef BM_DEBUG
ereport(LOG, (errcode(LOG),
errmsg("call bitmap_xlog_insert_lovitem: redo=%d, blkno=%d\n",
redo, xlrec->bm_lov_blkno)));
#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))
{
if(xlrec->bm_isNewItem)
{
OffsetNumber newOffset, itemSize;
newOffset = OffsetNumberNext(PageGetMaxOffsetNumber(lovPage));
if (newOffset != xlrec->bm_lov_offset)
elog(PANIC,
"bm_insert_redo: LOV item is not inserted in pos %d(requested %d)",
newOffset, xlrec->bm_lov_offset);
itemSize = sizeof(BMLOVItemData);
if (itemSize > PageGetFreeSpace(lovPage))
elog(PANIC,
"bm_insert_redo: not enough space in LOV page %d",
xlrec->bm_lov_blkno);
if (PageAddItem(lovPage, (Item)&(xlrec->bm_lovItem), itemSize,
newOffset, LP_USED) == InvalidOffsetNumber)
ereport(ERROR,
(errcode(ERRCODE_INTERNAL_ERROR),
errmsg("failed to add LOV item to \"%s\"",
RelationGetRelationName(reln))));
}
else{
BMLOVItem oldLovItem;
oldLovItem = (BMLOVItem)
PageGetItem(lovPage,
PageGetItemId(lovPage, xlrec->bm_lov_offset));
memcpy(oldLovItem, &(xlrec->bm_lovItem), sizeof(BMLOVItemData));
}
PageSetLSN(lovPage, lsn);
PageSetTLI(lovPage, ThisTimeLineID);
_bitmap_wrtbuf(lovBuffer);
}
else {
_bitmap_relbuf(lovBuffer);
}
}
else
elog(PANIC, "bm_insert_undo: not implemented.");
}
