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Postgres FD Implementation
Commit 6d5cba7c authored by Bruce Momjian's avatar Bruce Momjian
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More vacuum cleanup

parent d950c197
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Showing with 247 additions and 246 deletions
src/backend/commands/vacuum.c
View file @ 6d5cba7c
......@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.155 2000/05/29 16:21:04 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.156 2000/05/29 17:06:14 momjian Exp $
*
*-------------------------------------------------------------------------
......@@ -78,20 +78,20 @@ static void vac_vacuum(NameData *VacRelP, bool analyze, List *anal_cols2);
static VRelList getrels(NameData *VacRelP);
static void vacuum_rel(Oid relid, bool analyze);
static void analyze_rel(Oid relid, List *anal_cols2);
static void scan_heap(VRelStats *vacrelstats, Relation onerel, VPageList vacuum_pages, VPageList fraged_pages);
static void repair_frag(VRelStats *vacrelstats, Relation onerel, VPageList vacuum_pages, VPageList fraged_pages, int nindices, Relation *Irel);
static void vacuum_heap(VRelStats *vacrelstats, Relation onerel, VPageList vpl);
static void vacuum_page(Page page, VPageDescr vpd);
static void vacuum_index(VPageList vpl, Relation indrel, int num_tuples, int keep_tuples);
static void scan_heap(VRelStats *vacrelstats, Relation onerel, VacPageList vacuum_pages, VacPageList fraged_pages);
static void repair_frag(VRelStats *vacrelstats, Relation onerel, VacPageList vacuum_pages, VacPageList fraged_pages, int nindices, Relation *Irel);
static void vacuum_heap(VRelStats *vacrelstats, Relation onerel, VacPageList vacpagelist);
static void vacuum_page(Page page, VacPage vacpage);
static void vacuum_index(VacPageList vacpagelist, Relation indrel, int num_tuples, int keep_tuples);
static void scan_index(Relation indrel, int num_tuples);
static void attr_stats(Relation onerel, int attr_cnt, VacAttrStats *vacattrstats, HeapTuple tuple);
static void bucketcpy(Form_pg_attribute attr, Datum value, Datum *bucket, int *bucket_len);
static void update_relstats(Oid relid, int num_pages, int num_tuples, bool hasindex, VRelStats *vacrelstats);
static void update_attstats(Oid relid, int natts, VacAttrStats *vacattrstats);
static void del_stats(Oid relid, int attcnt, int *attnums);
static VPageDescr tid_reaped(ItemPointer itemptr, VPageList vpl);
static void reap_page(VPageList vpl, VPageDescr vpc);
static void vpage_insert(VPageList vpl, VPageDescr vpnew);
static VacPage tid_reaped(ItemPointer itemptr, VacPageList vacpagelist);
static void reap_page(VacPageList vacpagelist, VacPage vacpage);
static void vpage_insert(VacPageList vacpagelist, VacPage vpnew);
static void get_indices(Oid relid, int *nindices, Relation **Irel);
static void close_indices(int nindices, Relation *Irel);
static void get_index_desc(Relation onerel, int nindices, Relation *Irel, IndDesc **Idesc);
......@@ -100,7 +100,7 @@ static void *vac_find_eq(void *bot, int nelem, int size, void *elm,
static int vac_cmp_blk(const void *left, const void *right);
static int vac_cmp_offno(const void *left, const void *right);
static int vac_cmp_vtlinks(const void *left, const void *right);
static bool enough_space(VPageDescr vpd, Size len);
static bool enough_space(VacPage vacpage, Size len);
static char *show_rusage(struct rusage * ru0);
/* CommonSpecialPortal function at the bottom */
......@@ -363,11 +363,11 @@ vacuum_rel(Oid relid, bool analyze)
{
HeapTuple tuple;
Relation onerel;
VPageListData vacuum_pages; /* List of pages to vacuum and/or clean
VacPageListData vacuum_pages; /* List of pages to vacuum and/or clean
* indices */
VPageListData fraged_pages; /* List of pages with space enough for
VacPageListData fraged_pages; /* List of pages with space enough for
* re-using */
VPageDescr *vpp;
VacPage *vacpage;
Relation *Irel;
int32 nindices,
i;
......@@ -428,7 +428,7 @@ vacuum_rel(Oid relid, bool analyze)
/* scan it */
reindex = false;
vacuum_pages.vpl_num_pages = fraged_pages.vpl_num_pages = 0;
vacuum_pages.num_pages = fraged_pages.num_pages = 0;
scan_heap(vacrelstats, onerel, &vacuum_pages, &fraged_pages);
if (IsIgnoringSystemIndexes() && IsSystemRelationName(RelationGetRelationName(onerel)))
reindex = true;
......@@ -456,7 +456,7 @@ vacuum_rel(Oid relid, bool analyze)
/* Clean/scan index relation(s) */
if (Irel != (Relation *) NULL)
{
if (vacuum_pages.vpl_num_pages > 0)
if (vacuum_pages.num_pages > 0)
{
for (i = 0; i < nindices; i++)
vacuum_index(&vacuum_pages, Irel[i], vacrelstats->num_tuples, 0);
......@@ -469,13 +469,13 @@ vacuum_rel(Oid relid, bool analyze)
}
}
if (fraged_pages.vpl_num_pages > 0) /* Try to shrink heap */
if (fraged_pages.num_pages > 0) /* Try to shrink heap */
repair_frag(vacrelstats, onerel, &vacuum_pages, &fraged_pages, nindices, Irel);
else
{
if (Irel != (Relation *) NULL)
close_indices(nindices, Irel);
if (vacuum_pages.vpl_num_pages > 0) /* Clean pages from
if (vacuum_pages.num_pages > 0) /* Clean pages from
* vacuum_pages list */
vacuum_heap(vacrelstats, onerel, &vacuum_pages);
}
......@@ -483,14 +483,14 @@ vacuum_rel(Oid relid, bool analyze)
activate_indexes_of_a_table(relid, true);
/* ok - free vacuum_pages list of reaped pages */
if (vacuum_pages.vpl_num_pages > 0)
if (vacuum_pages.num_pages > 0)
{
vpp = vacuum_pages.vpl_pagedesc;
for (i = 0; i < vacuum_pages.vpl_num_pages; i++, vpp++)
pfree(*vpp);
pfree(vacuum_pages.vpl_pagedesc);
if (fraged_pages.vpl_num_pages > 0)
pfree(fraged_pages.vpl_pagedesc);
vacpage = vacuum_pages.pagedesc;
for (i = 0; i < vacuum_pages.num_pages; i++, vacpage++)
pfree(*vacpage);
pfree(vacuum_pages.pagedesc);
if (fraged_pages.num_pages > 0)
pfree(fraged_pages.pagedesc);
}
/* all done with this class, but hold lock until commit */
......@@ -691,7 +691,7 @@ analyze_rel(Oid relid, List *anal_cols2)
*/
static void
scan_heap(VRelStats *vacrelstats, Relation onerel,
VPageList vacuum_pages, VPageList fraged_pages)
VacPageList vacuum_pages, VacPageList fraged_pages)
{
BlockNumber nblocks,
blkno;
......@@ -707,7 +707,7 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
dobufrel,
notup;
char *relname;
VPageDescr vpc,
VacPage vacpage,
vp;
uint32 tups_vacuumed,
num_tuples,
......@@ -740,37 +740,37 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
nblocks = RelationGetNumberOfBlocks(onerel);
vpc = (VPageDescr) palloc(sizeof(VPageDescrData) + MaxOffsetNumber * sizeof(OffsetNumber));
vpc->vpd_offsets_used = 0;
vacpage = (VacPage) palloc(sizeof(VacPageData) + MaxOffsetNumber * sizeof(OffsetNumber));
vacpage->offsets_used = 0;
for (blkno = 0; blkno < nblocks; blkno++)
{
buf = ReadBuffer(onerel, blkno);
page = BufferGetPage(buf);
vpc->vpd_blkno = blkno;
vpc->vpd_offsets_free = 0;
vacpage->blkno = blkno;
vacpage->offsets_free = 0;
if (PageIsNew(page))
{
elog(NOTICE, "Rel %s: Uninitialized page %u - fixing",
relname, blkno);
PageInit(page, BufferGetPageSize(buf), 0);
vpc->vpd_free = ((PageHeader) page)->pd_upper - ((PageHeader) page)->pd_lower;
free_size += (vpc->vpd_free - sizeof(ItemIdData));
vacpage->free = ((PageHeader) page)->pd_upper - ((PageHeader) page)->pd_lower;
free_size += (vacpage->free - sizeof(ItemIdData));
new_pages++;
empty_end_pages++;
reap_page(vacuum_pages, vpc);
reap_page(vacuum_pages, vacpage);
WriteBuffer(buf);
continue;
}
if (PageIsEmpty(page))
{
vpc->vpd_free = ((PageHeader) page)->pd_upper - ((PageHeader) page)->pd_lower;
free_size += (vpc->vpd_free - sizeof(ItemIdData));
vacpage->free = ((PageHeader) page)->pd_upper - ((PageHeader) page)->pd_lower;
free_size += (vacpage->free - sizeof(ItemIdData));
empty_pages++;
empty_end_pages++;
reap_page(vacuum_pages, vpc);
reap_page(vacuum_pages, vacpage);
ReleaseBuffer(buf);
continue;
}
......@@ -790,7 +790,7 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
*/
if (!ItemIdIsUsed(itemid))
{
vpc->vpd_offsets[vpc->vpd_offsets_free++] = offnum;
vacpage->offsets[vacpage->offsets_free++] = offnum;
nunused++;
continue;
}
......@@ -974,7 +974,7 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
/* mark it unused */
lpp->lp_flags &= ~LP_USED;
vpc->vpd_offsets[vpc->vpd_offsets_free++] = offnum;
vacpage->offsets[vacpage->offsets_free++] = offnum;
tups_vacuumed++;
}
......@@ -1001,17 +1001,17 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
if (tempPage != (Page) NULL)
{ /* Some tuples are gone */
PageRepairFragmentation(tempPage);
vpc->vpd_free = ((PageHeader) tempPage)->pd_upper - ((PageHeader) tempPage)->pd_lower;
free_size += vpc->vpd_free;
reap_page(vacuum_pages, vpc);
vacpage->free = ((PageHeader) tempPage)->pd_upper - ((PageHeader) tempPage)->pd_lower;
free_size += vacpage->free;
reap_page(vacuum_pages, vacpage);
pfree(tempPage);
tempPage = (Page) NULL;
}
else if (vpc->vpd_offsets_free > 0)
else if (vacpage->offsets_free > 0)
{ /* there are only ~LP_USED line pointers */
vpc->vpd_free = ((PageHeader) page)->pd_upper - ((PageHeader) page)->pd_lower;
free_size += vpc->vpd_free;
reap_page(vacuum_pages, vpc);
vacpage->free = ((PageHeader) page)->pd_upper - ((PageHeader) page)->pd_lower;
free_size += vacpage->free;
reap_page(vacuum_pages, vacpage);
}
if (dobufrel)
ReleaseBuffer(buf);
......@@ -1021,7 +1021,7 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
empty_end_pages = 0;
}
pfree(vpc);
pfree(vacpage);
/* save stats in the rel list for use later */
vacrelstats->num_tuples = num_tuples;
......@@ -1032,28 +1032,28 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
vacrelstats->min_tlen = min_tlen;
vacrelstats->max_tlen = max_tlen;
vacuum_pages->vpl_empty_end_pages = empty_end_pages;
fraged_pages->vpl_empty_end_pages = empty_end_pages;
vacuum_pages->empty_end_pages = empty_end_pages;
fraged_pages->empty_end_pages = empty_end_pages;
/*
* Try to make fraged_pages keeping in mind that we can't use free
* space of "empty" end-pages and last page if it reaped.
*/
if (do_shrinking && vacuum_pages->vpl_num_pages - empty_end_pages > 0)
if (do_shrinking && vacuum_pages->num_pages - empty_end_pages > 0)
{
int nusf; /* blocks usefull for re-using */
nusf = vacuum_pages->vpl_num_pages - empty_end_pages;
if ((vacuum_pages->vpl_pagedesc[nusf - 1])->vpd_blkno == nblocks - empty_end_pages - 1)
nusf = vacuum_pages->num_pages - empty_end_pages;
if ((vacuum_pages->pagedesc[nusf - 1])->blkno == nblocks - empty_end_pages - 1)
nusf--;
for (i = 0; i < nusf; i++)
{
vp = vacuum_pages->vpl_pagedesc[i];
vp = vacuum_pages->pagedesc[i];
if (enough_space(vp, min_tlen))
{
vpage_insert(fraged_pages, vp);
usable_free_size += vp->vpd_free;
usable_free_size += vp->free;
}
}
}
......@@ -1075,11 +1075,11 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
elog(MESSAGE_LEVEL, "Pages %u: Changed %u, reaped %u, Empty %u, New %u; \
Tup %u: Vac %u, Keep/VTL %u/%u, Crash %u, UnUsed %u, MinLen %u, MaxLen %u; \
Re-using: Free/Avail. Space %u/%u; EndEmpty/Avail. Pages %u/%u. %s",
nblocks, changed_pages, vacuum_pages->vpl_num_pages, empty_pages,
nblocks, changed_pages, vacuum_pages->num_pages, empty_pages,
new_pages, num_tuples, tups_vacuumed,
nkeep, vacrelstats->num_vtlinks, ncrash,
nunused, min_tlen, max_tlen, free_size, usable_free_size,
empty_end_pages, fraged_pages->vpl_num_pages,
empty_end_pages, fraged_pages->num_pages,
show_rusage(&ru0));
}
......@@ -1090,14 +1090,14 @@ Re-using: Free/Avail. Space %u/%u; EndEmpty/Avail. Pages %u/%u. %s",
*
* This routine marks dead tuples as unused and tries re-use dead space
* by moving tuples (and inserting indices if needed). It constructs
* Nvpl list of free-ed pages (moved tuples) and clean indices
* Nvacpagelist list of free-ed pages (moved tuples) and clean indices
* for them after committing (in hack-manner - without losing locks
* and freeing memory!) current transaction. It truncates relation
* if some end-blocks are gone away.
*/
static void
repair_frag(VRelStats *vacrelstats, Relation onerel,
VPageList vacuum_pages, VPageList fraged_pages,
VacPageList vacuum_pages, VacPageList fraged_pages,
int nindices, Relation *Irel)
{
TransactionId myXID;
......@@ -1120,11 +1120,11 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
Datum *idatum = NULL;
char *inulls = NULL;
InsertIndexResult iresult;
VPageListData Nvpl;
VPageDescr cur_page = NULL,
VacPageListData Nvacpagelist;
VacPage cur_page = NULL,
last_vacuum_page,
vpc,
*vpp;
vacpage,
*curpage;
int cur_item = 0;
IndDesc *Idesc,
*idcur;
......@@ -1156,17 +1156,17 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
inulls = (char *) palloc(INDEX_MAX_KEYS * sizeof(*inulls));
}
Nvpl.vpl_num_pages = 0;
num_fraged_pages = fraged_pages->vpl_num_pages;
Assert(vacuum_pages->vpl_num_pages > vacuum_pages->vpl_empty_end_pages);
vacuumed_pages = vacuum_pages->vpl_num_pages - vacuum_pages->vpl_empty_end_pages;
last_vacuum_page = vacuum_pages->vpl_pagedesc[vacuumed_pages - 1];
last_vacuum_block = last_vacuum_page->vpd_blkno;
Nvacpagelist.num_pages = 0;
num_fraged_pages = fraged_pages->num_pages;
Assert(vacuum_pages->num_pages > vacuum_pages->empty_end_pages);
vacuumed_pages = vacuum_pages->num_pages - vacuum_pages->empty_end_pages;
last_vacuum_page = vacuum_pages->pagedesc[vacuumed_pages - 1];
last_vacuum_block = last_vacuum_page->blkno;
cur_buffer = InvalidBuffer;
num_moved = 0;
vpc = (VPageDescr) palloc(sizeof(VPageDescrData) + MaxOffsetNumber * sizeof(OffsetNumber));
vpc->vpd_offsets_used = vpc->vpd_offsets_free = 0;
vacpage = (VacPage) palloc(sizeof(VacPageData) + MaxOffsetNumber * sizeof(OffsetNumber));
vacpage->offsets_used = vacpage->offsets_free = 0;
/*
* Scan pages backwards from the last nonempty page, trying to move
......@@ -1180,21 +1180,21 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
* in order, and on fraged_pages being a subset of vacuum_pages.
*/
nblocks = vacrelstats->num_pages;
for (blkno = nblocks - vacuum_pages->vpl_empty_end_pages - 1;
for (blkno = nblocks - vacuum_pages->empty_end_pages - 1;
blkno > last_move_dest_block;
blkno--)
{
buf = ReadBuffer(onerel, blkno);
page = BufferGetPage(buf);
vpc->vpd_offsets_free = 0;
vacpage->offsets_free = 0;
isempty = PageIsEmpty(page);
dowrite = false;
if (blkno == last_vacuum_block) /* it's reaped page */
{
if (last_vacuum_page->vpd_offsets_free > 0) /* there are dead tuples */
if (last_vacuum_page->offsets_free > 0) /* there are dead tuples */
{ /* on this page - clean */
Assert(!isempty);
vacuum_page(page, last_vacuum_page);
......@@ -1206,8 +1206,8 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
if (vacuumed_pages > 0)
{
/* get prev reaped page from vacuum_pages */
last_vacuum_page = vacuum_pages->vpl_pagedesc[vacuumed_pages - 1];
last_vacuum_block = last_vacuum_page->vpd_blkno;
last_vacuum_page = vacuum_pages->pagedesc[vacuumed_pages - 1];
last_vacuum_block = last_vacuum_page->blkno;
}
else
{
......@@ -1215,7 +1215,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
last_vacuum_block = -1;
}
if (num_fraged_pages > 0 &&
fraged_pages->vpl_pagedesc[num_fraged_pages - 1]->vpd_blkno ==
fraged_pages->pagedesc[num_fraged_pages - 1]->blkno ==
(BlockNumber) blkno)
{
/* page is in fraged_pages too; remove it */
......@@ -1232,7 +1232,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
chain_tuple_moved = false; /* no one chain-tuple was moved
* off this page, yet */
vpc->vpd_blkno = blkno;
vacpage->blkno = blkno;
maxoff = PageGetMaxOffsetNumber(page);
for (offnum = FirstOffsetNumber;
offnum <= maxoff;
......@@ -1257,7 +1257,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
/*
* If this (chain) tuple is moved by me already then I
* have to check is it in vpc or not - i.e. is it moved
* have to check is it in vacpage or not - i.e. is it moved
* while cleaning this page or some previous one.
*/
if (tuple.t_data->t_infomask & HEAP_MOVED_OFF)
......@@ -1267,21 +1267,21 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
if (chain_tuple_moved) /* some chains was moved
* while */
{ /* cleaning this page */
Assert(vpc->vpd_offsets_free > 0);
for (i = 0; i < vpc->vpd_offsets_free; i++)
Assert(vacpage->offsets_free > 0);
for (i = 0; i < vacpage->offsets_free; i++)
{
if (vpc->vpd_offsets[i] == offnum)
if (vacpage->offsets[i] == offnum)
break;
}
if (i >= vpc->vpd_offsets_free) /* not found */
if (i >= vacpage->offsets_free) /* not found */
{
vpc->vpd_offsets[vpc->vpd_offsets_free++] = offnum;
vacpage->offsets[vacpage->offsets_free++] = offnum;
keep_tuples--;
}
}
else
{
vpc->vpd_offsets[vpc->vpd_offsets_free++] = offnum;
vacpage->offsets[vacpage->offsets_free++] = offnum;
keep_tuples--;
}
continue;
......@@ -1309,7 +1309,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
palloc(100 * sizeof(VTupleMoveData));
int num_vtmove = 0;
int free_vtmove = 100;
VPageDescr to_vpd = NULL;
VacPage to_vacpage = NULL;
int to_item = 0;
bool freeCbuf = false;
int ti;
......@@ -1366,26 +1366,26 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
/* first, can chain be moved ? */
for (;;)
{
if (to_vpd == NULL ||
!enough_space(to_vpd, tlen))
if (to_vacpage == NULL ||
!enough_space(to_vacpage, tlen))
{
/*
* if to_vpd no longer has enough free space to be
* if to_vacpage no longer has enough free space to be
* useful, remove it from fraged_pages list
*/
if (to_vpd != NULL &&
!enough_space(to_vpd, vacrelstats->min_tlen))
if (to_vacpage != NULL &&
!enough_space(to_vacpage, vacrelstats->min_tlen))
{
Assert(num_fraged_pages > to_item);
memmove(fraged_pages->vpl_pagedesc + to_item,
fraged_pages->vpl_pagedesc + to_item + 1,
sizeof(VPageDescr) * (num_fraged_pages - to_item - 1));
memmove(fraged_pages->pagedesc + to_item,
fraged_pages->pagedesc + to_item + 1,
sizeof(VacPage) * (num_fraged_pages - to_item - 1));
num_fraged_pages--;
}
for (i = 0; i < num_fraged_pages; i++)
{
if (enough_space(fraged_pages->vpl_pagedesc[i], tlen))
if (enough_space(fraged_pages->pagedesc[i], tlen))
break;
}
......@@ -1394,19 +1394,19 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
{
for (i = 0; i < num_vtmove; i++)
{
Assert(vtmove[i].vpd->vpd_offsets_used > 0);
(vtmove[i].vpd->vpd_offsets_used)--;
Assert(vtmove[i].vacpage->offsets_used > 0);
(vtmove[i].vacpage->offsets_used)--;
}
num_vtmove = 0;
break;
}
to_item = i;
to_vpd = fraged_pages->vpl_pagedesc[to_item];
to_vacpage = fraged_pages->pagedesc[to_item];
}
to_vpd->vpd_free -= MAXALIGN(tlen);
if (to_vpd->vpd_offsets_used >= to_vpd->vpd_offsets_free)
to_vpd->vpd_free -= MAXALIGN(sizeof(ItemIdData));
(to_vpd->vpd_offsets_used)++;
to_vacpage->free -= MAXALIGN(tlen);
if (to_vacpage->offsets_used >= to_vacpage->offsets_free)
to_vacpage->free -= MAXALIGN(sizeof(ItemIdData));
(to_vacpage->offsets_used)++;
if (free_vtmove == 0)
{
free_vtmove = 1000;
......@@ -1415,8 +1415,8 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
sizeof(VTupleMoveData));
}
vtmove[num_vtmove].tid = tp.t_self;
vtmove[num_vtmove].vpd = to_vpd;
if (to_vpd->vpd_offsets_used == 1)
vtmove[num_vtmove].vacpage = to_vacpage;
if (to_vacpage->offsets_used == 1)
vtmove[num_vtmove].cleanVpd = true;
else
vtmove[num_vtmove].cleanVpd = false;
......@@ -1481,8 +1481,8 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
ReleaseBuffer(Pbuf);
for (i = 0; i < num_vtmove; i++)
{
Assert(vtmove[i].vpd->vpd_offsets_used > 0);
(vtmove[i].vpd->vpd_offsets_used)--;
Assert(vtmove[i].vacpage->offsets_used > 0);
(vtmove[i].vacpage->offsets_used)--;
}
num_vtmove = 0;
elog(NOTICE, "Too old parent tuple found - can't continue repair_frag");
......@@ -1531,7 +1531,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
ItemPointerSetInvalid(&Ctid);
for (ti = 0; ti < num_vtmove; ti++)
{
VPageDescr destvpd = vtmove[ti].vpd;
VacPage destvacpage = vtmove[ti].vacpage;
/* Get tuple from chain */
tuple.t_self = vtmove[ti].tid;
......@@ -1544,7 +1544,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
tuple.t_data = (HeapTupleHeader) PageGetItem(Cpage, Citemid);
tuple_len = tuple.t_len = ItemIdGetLength(Citemid);
/* Get page to move in */
cur_buffer = ReadBuffer(onerel, destvpd->vpd_blkno);
cur_buffer = ReadBuffer(onerel, destvacpage->blkno);
/*
* We should LockBuffer(cur_buffer) but don't, at the
......@@ -1559,20 +1559,20 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
*
* This path is different from the other callers of
* vacuum_page, because we have already incremented the
* vpd's vpd_offsets_used field to account for the
* vacpage's offsets_used field to account for the
* tuple(s) we expect to move onto the page. Therefore
* vacuum_page's check for vpd_offsets_used == 0 is
* vacuum_page's check for offsets_used == 0 is
* wrong. But since that's a good debugging check for
* all other callers, we work around it here rather
* than remove it.
*/
if (!PageIsEmpty(ToPage) && vtmove[ti].cleanVpd)
{
int sv_offsets_used = destvpd->vpd_offsets_used;
int sv_offsets_used = destvacpage->offsets_used;
destvpd->vpd_offsets_used = 0;
vacuum_page(ToPage, destvpd);
destvpd->vpd_offsets_used = sv_offsets_used;
destvacpage->offsets_used = 0;
vacuum_page(ToPage, destvacpage);
destvacpage->offsets_used = sv_offsets_used;
}
heap_copytuple_with_tuple(&tuple, &newtup);
RelationInvalidateHeapTuple(onerel, &tuple);
......@@ -1585,15 +1585,15 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
if (newoff == InvalidOffsetNumber)
{
elog(ERROR, "moving chain: failed to add item with len = %u to page %u",
tuple_len, destvpd->vpd_blkno);
tuple_len, destvacpage->blkno);
}
newitemid = PageGetItemId(ToPage, newoff);
pfree(newtup.t_data);
newtup.t_datamcxt = NULL;
newtup.t_data = (HeapTupleHeader) PageGetItem(ToPage, newitemid);
ItemPointerSet(&(newtup.t_self), destvpd->vpd_blkno, newoff);
if (((int) destvpd->vpd_blkno) > last_move_dest_block)
last_move_dest_block = destvpd->vpd_blkno;
ItemPointerSet(&(newtup.t_self), destvacpage->blkno, newoff);
if (((int) destvacpage->blkno) > last_move_dest_block)
last_move_dest_block = destvacpage->blkno;
/*
* Set t_ctid pointing to itself for last tuple in
......@@ -1617,7 +1617,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
* (corresponding index tuple will be cleaned).
*/
if (Cbuf == buf)
vpc->vpd_offsets[vpc->vpd_offsets_free++] =
vacpage->offsets[vacpage->offsets_free++] =
ItemPointerGetOffsetNumber(&(tuple.t_self));
else
keep_tuples++;
......@@ -1670,25 +1670,25 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
if (!enough_space(cur_page, vacrelstats->min_tlen))
{
Assert(num_fraged_pages > cur_item);
memmove(fraged_pages->vpl_pagedesc + cur_item,
fraged_pages->vpl_pagedesc + cur_item + 1,
sizeof(VPageDescr) * (num_fraged_pages - cur_item - 1));
memmove(fraged_pages->pagedesc + cur_item,
fraged_pages->pagedesc + cur_item + 1,
sizeof(VacPage) * (num_fraged_pages - cur_item - 1));
num_fraged_pages--;
}
}
for (i = 0; i < num_fraged_pages; i++)
{
if (enough_space(fraged_pages->vpl_pagedesc[i], tuple_len))
if (enough_space(fraged_pages->pagedesc[i], tuple_len))
break;
}
if (i == num_fraged_pages)
break; /* can't move item anywhere */
cur_item = i;
cur_page = fraged_pages->vpl_pagedesc[cur_item];
cur_buffer = ReadBuffer(onerel, cur_page->vpd_blkno);
cur_page = fraged_pages->pagedesc[cur_item];
cur_buffer = ReadBuffer(onerel, cur_page->blkno);
ToPage = BufferGetPage(cur_buffer);
/* if this page was not used before - clean it */
if (!PageIsEmpty(ToPage) && cur_page->vpd_offsets_used == 0)
if (!PageIsEmpty(ToPage) && cur_page->offsets_used == 0)
vacuum_page(ToPage, cur_page);
}
......@@ -1713,14 +1713,14 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
{
elog(ERROR, "\
failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
tuple_len, cur_page->vpd_blkno, cur_page->vpd_free,
cur_page->vpd_offsets_used, cur_page->vpd_offsets_free);
tuple_len, cur_page->blkno, cur_page->free,
cur_page->offsets_used, cur_page->offsets_free);
}
newitemid = PageGetItemId(ToPage, newoff);
pfree(newtup.t_data);
newtup.t_datamcxt = NULL;
newtup.t_data = (HeapTupleHeader) PageGetItem(ToPage, newitemid);
ItemPointerSet(&(newtup.t_data->t_ctid), cur_page->vpd_blkno, newoff);
ItemPointerSet(&(newtup.t_data->t_ctid), cur_page->blkno, newoff);
newtup.t_self = newtup.t_data->t_ctid;
/*
......@@ -1732,13 +1732,13 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
~(HEAP_XMIN_COMMITTED | HEAP_XMIN_INVALID | HEAP_MOVED_IN);
tuple.t_data->t_infomask |= HEAP_MOVED_OFF;
cur_page->vpd_offsets_used++;
cur_page->offsets_used++;
num_moved++;
cur_page->vpd_free = ((PageHeader) ToPage)->pd_upper - ((PageHeader) ToPage)->pd_lower;
if (((int) cur_page->vpd_blkno) > last_move_dest_block)
last_move_dest_block = cur_page->vpd_blkno;
cur_page->free = ((PageHeader) ToPage)->pd_upper - ((PageHeader) ToPage)->pd_lower;
if (((int) cur_page->blkno) > last_move_dest_block)
last_move_dest_block = cur_page->blkno;
vpc->vpd_offsets[vpc->vpd_offsets_free++] = offnum;
vacpage->offsets[vacpage->offsets_free++] = offnum;
/* insert index' tuples if needed */
if (Irel != (Relation *) NULL)
......@@ -1788,22 +1788,22 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
/* some chains was moved while */
if (chain_tuple_moved)
{ /* cleaning this page */
Assert(vpc->vpd_offsets_free > 0);
for (i = 0; i < vpc->vpd_offsets_free; i++)
Assert(vacpage->offsets_free > 0);
for (i = 0; i < vacpage->offsets_free; i++)
{
if (vpc->vpd_offsets[i] == off)
if (vacpage->offsets[i] == off)
break;
}
if (i >= vpc->vpd_offsets_free) /* not found */
if (i >= vacpage->offsets_free) /* not found */
{
vpc->vpd_offsets[vpc->vpd_offsets_free++] = off;
vacpage->offsets[vacpage->offsets_free++] = off;
Assert(keep_tuples > 0);
keep_tuples--;
}
}
else
{
vpc->vpd_offsets[vpc->vpd_offsets_free++] = off;
vacpage->offsets[vacpage->offsets_free++] = off;
Assert(keep_tuples > 0);
keep_tuples--;
}
......@@ -1811,14 +1811,14 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
}
}
if (vpc->vpd_offsets_free > 0) /* some tuples were moved */
if (vacpage->offsets_free > 0) /* some tuples were moved */
{
if (chain_tuple_moved) /* else - they are ordered */
{
qsort((char *) (vpc->vpd_offsets), vpc->vpd_offsets_free,
qsort((char *) (vacpage->offsets), vacpage->offsets_free,
sizeof(OffsetNumber), vac_cmp_offno);
}
reap_page(&Nvpl, vpc);
reap_page(&Nvacpagelist, vacpage);
WriteBuffer(buf);
}
else if (dowrite)
......@@ -1858,15 +1858,15 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
* xmin committed for inserted tuples
*/
checked_moved = 0;
for (i = 0, vpp = vacuum_pages->vpl_pagedesc; i < vacuumed_pages; i++, vpp++)
for (i = 0, curpage = vacuum_pages->pagedesc; i < vacuumed_pages; i++, curpage++)
{
Assert((*vpp)->vpd_blkno < (BlockNumber) blkno);
buf = ReadBuffer(onerel, (*vpp)->vpd_blkno);
Assert((*curpage)->blkno < (BlockNumber) blkno);
buf = ReadBuffer(onerel, (*curpage)->blkno);
page = BufferGetPage(buf);
if ((*vpp)->vpd_offsets_used == 0) /* this page was not used */
if ((*curpage)->offsets_used == 0) /* this page was not used */
{
if (!PageIsEmpty(page))
vacuum_page(page, *vpp);
vacuum_page(page, *curpage);
}
else
/* this page was used */
......@@ -1897,7 +1897,7 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
elog(ERROR, "HEAP_MOVED_OFF/HEAP_MOVED_IN was expected");
}
}
Assert((*vpp)->vpd_offsets_used == num_tuples);
Assert((*curpage)->offsets_used == num_tuples);
checked_moved += num_tuples;
}
WriteBuffer(buf);
......@@ -1909,18 +1909,18 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
nblocks, blkno, num_moved,
show_rusage(&ru0));
if (Nvpl.vpl_num_pages > 0)
if (Nvacpagelist.num_pages > 0)
{
/* vacuum indices again if needed */
if (Irel != (Relation *) NULL)
{
VPageDescr *vpleft,
VacPage *vpleft,
*vpright,
vpsave;
/* re-sort Nvpl.vpl_pagedesc */
for (vpleft = Nvpl.vpl_pagedesc,
vpright = Nvpl.vpl_pagedesc + Nvpl.vpl_num_pages - 1;
/* re-sort Nvacpagelist.pagedesc */
for (vpleft = Nvacpagelist.pagedesc,
vpright = Nvacpagelist.pagedesc + Nvacpagelist.num_pages - 1;
vpleft < vpright; vpleft++, vpright--)
{
vpsave = *vpleft;
......@@ -1929,15 +1929,15 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
}
Assert(keep_tuples >= 0);
for (i = 0; i < nindices; i++)
vacuum_index(&Nvpl, Irel[i],
vacuum_index(&Nvacpagelist, Irel[i],
vacrelstats->num_tuples, keep_tuples);
}
/* clean moved tuples from last page in Nvpl list */
if (vpc->vpd_blkno == (BlockNumber) (blkno - 1) &&
vpc->vpd_offsets_free > 0)
/* clean moved tuples from last page in Nvacpagelist list */
if (vacpage->blkno == (BlockNumber) (blkno - 1) &&
vacpage->offsets_free > 0)
{
buf = ReadBuffer(onerel, vpc->vpd_blkno);
buf = ReadBuffer(onerel, vacpage->blkno);
page = BufferGetPage(buf);
num_tuples = 0;
for (offnum = FirstOffsetNumber;
......@@ -1964,16 +1964,16 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
}
}
Assert(vpc->vpd_offsets_free == num_tuples);
Assert(vacpage->offsets_free == num_tuples);
PageRepairFragmentation(page);
WriteBuffer(buf);
}
/* now - free new list of reaped pages */
vpp = Nvpl.vpl_pagedesc;
for (i = 0; i < Nvpl.vpl_num_pages; i++, vpp++)
pfree(*vpp);
pfree(Nvpl.vpl_pagedesc);
curpage = Nvacpagelist.pagedesc;
for (i = 0; i < Nvacpagelist.num_pages; i++, curpage++)
pfree(*curpage);
pfree(Nvacpagelist.pagedesc);
}
/* truncate relation, after flushing any dirty pages out to disk */
......@@ -1995,7 +1995,7 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
close_indices(nindices, Irel);
}
pfree(vpc);
pfree(vacpage);
if (vacrelstats->vtlinks != NULL)
pfree(vacrelstats->vtlinks);
......@@ -2008,34 +2008,34 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
* if there are "empty" end-blocks.
*/
static void
vacuum_heap(VRelStats *vacrelstats, Relation onerel, VPageList vacuum_pages)
vacuum_heap(VRelStats *vacrelstats, Relation onerel, VacPageList vacuum_pages)
{
Buffer buf;
Page page;
VPageDescr *vpp;
VacPage *vacpage;
int nblocks;
int i;
nblocks = vacuum_pages->vpl_num_pages;
nblocks -= vacuum_pages->vpl_empty_end_pages; /* nothing to do with
nblocks = vacuum_pages->num_pages;
nblocks -= vacuum_pages->empty_end_pages; /* nothing to do with
* them */
for (i = 0, vpp = vacuum_pages->vpl_pagedesc; i < nblocks; i++, vpp++)
for (i = 0, vacpage = vacuum_pages->pagedesc; i < nblocks; i++, vacpage++)
{
if ((*vpp)->vpd_offsets_free > 0)
if ((*vacpage)->offsets_free > 0)
{
buf = ReadBuffer(onerel, (*vpp)->vpd_blkno);
buf = ReadBuffer(onerel, (*vacpage)->blkno);
page = BufferGetPage(buf);
vacuum_page(page, *vpp);
vacuum_page(page, *vacpage);
WriteBuffer(buf);
}
}
/* truncate relation if there are some empty end-pages */
if (vacuum_pages->vpl_empty_end_pages > 0)
if (vacuum_pages->empty_end_pages > 0)
{
Assert(vacrelstats->num_pages >= vacuum_pages->vpl_empty_end_pages);
nblocks = vacrelstats->num_pages - vacuum_pages->vpl_empty_end_pages;
Assert(vacrelstats->num_pages >= vacuum_pages->empty_end_pages);
nblocks = vacrelstats->num_pages - vacuum_pages->empty_end_pages;
elog(MESSAGE_LEVEL, "Rel %s: Pages: %u --> %u.",
RelationGetRelationName(onerel),
vacrelstats->num_pages, nblocks);
......@@ -2065,17 +2065,17 @@ vacuum_heap(VRelStats *vacrelstats, Relation onerel, VPageList vacuum_pages)
* and repair its fragmentation.
*/
static void
vacuum_page(Page page, VPageDescr vpd)
vacuum_page(Page page, VacPage vacpage)
{
ItemId itemid;
int i;
/* There shouldn't be any tuples moved onto the page yet! */
Assert(vpd->vpd_offsets_used == 0);
Assert(vacpage->offsets_used == 0);
for (i = 0; i < vpd->vpd_offsets_free; i++)
for (i = 0; i < vacpage->offsets_free; i++)
{
itemid = &(((PageHeader) page)->pd_linp[vpd->vpd_offsets[i] - 1]);
itemid = &(((PageHeader) page)->pd_linp[vacpage->offsets[i] - 1]);
itemid->lp_flags &= ~LP_USED;
}
PageRepairFragmentation(page);
......@@ -2128,7 +2128,7 @@ scan_index(Relation indrel, int num_tuples)
/*
* vacuum_index() -- vacuum one index relation.
*
* Vpl is the VPageList of the heap we're currently vacuuming.
* Vpl is the VacPageList of the heap we're currently vacuuming.
* It's locked. Indrel is an index relation on the vacuumed heap.
* We don't set locks on the index relation here, since the indexed
* access methods support locking at different granularities.
......@@ -2138,7 +2138,7 @@ scan_index(Relation indrel, int num_tuples)
* pg_class.
*/
static void
vacuum_index(VPageList vpl, Relation indrel, int num_tuples, int keep_tuples)
vacuum_index(VacPageList vacpagelist, Relation indrel, int num_tuples, int keep_tuples)
{
RetrieveIndexResult res;
IndexScanDesc iscan;
......@@ -2146,7 +2146,7 @@ vacuum_index(VPageList vpl, Relation indrel, int num_tuples, int keep_tuples)
int tups_vacuumed;
int num_index_tuples;
int num_pages;
VPageDescr vp;
VacPage vp;
struct rusage ru0;
getrusage(RUSAGE_SELF, &ru0);
......@@ -2161,7 +2161,7 @@ vacuum_index(VPageList vpl, Relation indrel, int num_tuples, int keep_tuples)
{
heapptr = &res->heap_iptr;
if ((vp = tid_reaped(heapptr, vpl)) != (VPageDescr) NULL)
if ((vp = tid_reaped(heapptr, vacpagelist)) != (VacPage) NULL)
{
#ifdef NOT_USED
elog(DEBUG, "<%x,%x> -> <%x,%x>",
......@@ -2170,11 +2170,11 @@ vacuum_index(VPageList vpl, Relation indrel, int num_tuples, int keep_tuples)
ItemPointerGetBlockNumber(&(res->heap_iptr)),
ItemPointerGetOffsetNumber(&(res->heap_iptr)));
#endif
if (vp->vpd_offsets_free == 0)
if (vp->offsets_free == 0)
{
elog(NOTICE, "Index %s: pointer to EmptyPage (blk %u off %u) - fixing",
RelationGetRelationName(indrel),
vp->vpd_blkno, ItemPointerGetOffsetNumber(heapptr));
vp->blkno, ItemPointerGetOffsetNumber(heapptr));
}
++tups_vacuumed;
index_delete(indrel, &res->index_iptr);
......@@ -2206,42 +2206,42 @@ vacuum_index(VPageList vpl, Relation indrel, int num_tuples, int keep_tuples)
/*
* tid_reaped() -- is a particular tid reaped?
*
* vpl->VPageDescr_array is sorted in right order.
* vacpagelist->VacPage_array is sorted in right order.
*/
static VPageDescr
tid_reaped(ItemPointer itemptr, VPageList vpl)
static VacPage
tid_reaped(ItemPointer itemptr, VacPageList vacpagelist)
{
OffsetNumber ioffno;
OffsetNumber *voff;
VPageDescr vp,
VacPage vp,
*vpp;
VPageDescrData vpd;
VacPageData vacpage;
vpd.vpd_blkno = ItemPointerGetBlockNumber(itemptr);
vacpage.blkno = ItemPointerGetBlockNumber(itemptr);
ioffno = ItemPointerGetOffsetNumber(itemptr);
vp = &vpd;
vpp = (VPageDescr *) vac_find_eq((void *) (vpl->vpl_pagedesc),
vpl->vpl_num_pages, sizeof(VPageDescr), (void *) &vp,
vp = &vacpage;
vpp = (VacPage *) vac_find_eq((void *) (vacpagelist->pagedesc),
vacpagelist->num_pages, sizeof(VacPage), (void *) &vp,
vac_cmp_blk);
if (vpp == (VPageDescr *) NULL)
return (VPageDescr) NULL;
if (vpp == (VacPage *) NULL)
return (VacPage) NULL;
vp = *vpp;
/* ok - we are on true page */
if (vp->vpd_offsets_free == 0)
if (vp->offsets_free == 0)
{ /* this is EmptyPage !!! */
return vp;
}
voff = (OffsetNumber *) vac_find_eq((void *) (vp->vpd_offsets),
vp->vpd_offsets_free, sizeof(OffsetNumber), (void *) &ioffno,
voff = (OffsetNumber *) vac_find_eq((void *) (vp->offsets),
vp->offsets_free, sizeof(OffsetNumber), (void *) &ioffno,
vac_cmp_offno);
if (voff == (OffsetNumber *) NULL)
return (VPageDescr) NULL;
return (VacPage) NULL;
return vp;
......@@ -2720,43 +2720,44 @@ del_stats(Oid relid, int attcnt, int *attnums)
* (and highest tid on a page is last).
*/
static void
reap_page(VPageList vpl, VPageDescr vpc)
reap_page(VacPageList vacpagelist, VacPage vacpage)
{
VPageDescr newvpd;
VacPage newvacpage;
/* allocate a VPageDescrData entry */
newvpd = (VPageDescr) palloc(sizeof(VPageDescrData) + vpc->vpd_offsets_free * sizeof(OffsetNumber));
/* allocate a VacPageData entry */
newvacpage = (VacPage) palloc(sizeof(VacPageData) + vacpage->offsets_free * sizeof(OffsetNumber));
/* fill it in */
if (vpc->vpd_offsets_free > 0)
memmove(newvpd->vpd_offsets, vpc->vpd_offsets, vpc->vpd_offsets_free * sizeof(OffsetNumber));
newvpd->vpd_blkno = vpc->vpd_blkno;
newvpd->vpd_free = vpc->vpd_free;
newvpd->vpd_offsets_used = vpc->vpd_offsets_used;
newvpd->vpd_offsets_free = vpc->vpd_offsets_free;
if (vacpage->offsets_free > 0)
memmove(newvacpage->offsets, vacpage->offsets, vacpage->offsets_free * sizeof(OffsetNumber));
newvacpage->blkno = vacpage->blkno;
newvacpage->free = vacpage->free;
newvacpage->offsets_used = vacpage->offsets_used;
newvacpage->offsets_free = vacpage->offsets_free;
/* insert this page into vpl list */
vpage_insert(vpl, newvpd);
/* insert this page into vacpagelist list */
vpage_insert(vacpagelist, newvacpage);
}
static void vpage_insert(VPageList vpl, VPageDescr vpnew)
static void
vpage_insert(VacPageList vacpagelist, VacPage vpnew)
{
#define PG_NPAGEDESC 1024
/* allocate a VPageDescr entry if needed */
if (vpl->vpl_num_pages == 0)
/* allocate a VacPage entry if needed */
if (vacpagelist->num_pages == 0)
{
vpl->vpl_pagedesc = (VPageDescr *) palloc(PG_NPAGEDESC * sizeof(VPageDescr));
vpl->vpl_num_allocated_pages = PG_NPAGEDESC;
vacpagelist->pagedesc = (VacPage *) palloc(PG_NPAGEDESC * sizeof(VacPage));
vacpagelist->num_allocated_pages = PG_NPAGEDESC;
}
else if (vpl->vpl_num_pages >= vpl->vpl_num_allocated_pages)
else if (vacpagelist->num_pages >= vacpagelist->num_allocated_pages)
{
vpl->vpl_num_allocated_pages *= 2;
vpl->vpl_pagedesc = (VPageDescr *) repalloc(vpl->vpl_pagedesc, vpl->vpl_num_allocated_pages * sizeof(VPageDescr));
vacpagelist->num_allocated_pages *= 2;
vacpagelist->pagedesc = (VacPage *) repalloc(vacpagelist->pagedesc, vacpagelist->num_allocated_pages * sizeof(VacPage));
}
vpl->vpl_pagedesc[vpl->vpl_num_pages] = vpnew;
(vpl->vpl_num_pages)++;
vacpagelist->pagedesc[vacpagelist->num_pages] = vpnew;
(vacpagelist->num_pages)++;
}
......@@ -2821,8 +2822,8 @@ vac_cmp_blk(const void *left, const void *right)
BlockNumber lblk,
rblk;
lblk = (*((VPageDescr *) left))->vpd_blkno;
rblk = (*((VPageDescr *) right))->vpd_blkno;
lblk = (*((VacPage *) left))->blkno;
rblk = (*((VacPage *) right))->blkno;
if (lblk < rblk)
return -1;
......@@ -3063,20 +3064,20 @@ get_index_desc(Relation onerel, int nindices, Relation *Irel, IndDesc **Idesc)
static bool
enough_space(VPageDescr vpd, Size len)
enough_space(VacPage vacpage, Size len)
{
len = MAXALIGN(len);
if (len > vpd->vpd_free)
if (len > vacpage->free)
return false;
if (vpd->vpd_offsets_used < vpd->vpd_offsets_free) /* there are free
if (vacpage->offsets_used < vacpage->offsets_free) /* there are free
* itemid(s) */
return true; /* and len <= free_space */
/* ok. noff_usd >= noff_free and so we'll have to allocate new itemid */
if (len + MAXALIGN(sizeof(ItemIdData)) <= vpd->vpd_free)
if (len + MAXALIGN(sizeof(ItemIdData)) <= vacpage->free)
return true;
return false;
......
src/include/commands/vacuum.h
View file @ 6d5cba7c
......@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: vacuum.h,v 1.29 2000/05/29 16:21:05 momjian Exp $
* $Id: vacuum.h,v 1.30 2000/05/29 17:06:15 momjian Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -30,29 +30,29 @@ typedef struct VAttListData
typedef VAttListData *VAttList;
typedef struct VPageDescrData
typedef struct VacPageData
{
BlockNumber vpd_blkno; /* BlockNumber of this Page */
Size vpd_free; /* FreeSpace on this Page */
uint16 vpd_offsets_used; /* Number of OffNums used by
BlockNumber blkno; /* BlockNumber of this Page */
Size free; /* FreeSpace on this Page */
uint16 offsets_used; /* Number of OffNums used by
* vacuum */
uint16 vpd_offsets_free; /* Number of OffNums free or to be
uint16 offsets_free; /* Number of OffNums free or to be
* free */
OffsetNumber vpd_offsets[1];/* Array of its OffNums */
} VPageDescrData;
OffsetNumber offsets[1];/* Array of its OffNums */
} VacPageData;
typedef VPageDescrData *VPageDescr;
typedef VacPageData *VacPage;
typedef struct VPageListData
typedef struct VacPageListData
{
int vpl_empty_end_pages; /* Number of "empty" end-pages */
int vpl_num_pages; /* Number of pages in vpl_pagedesc */
int vpl_num_allocated_pages; /* Number of allocated
* pages in vpl_pagedesc */
VPageDescr *vpl_pagedesc; /* Descriptions of pages */
} VPageListData;
int empty_end_pages; /* Number of "empty" end-pages */
int num_pages; /* Number of pages in pagedesc */
int num_allocated_pages; /* Number of allocated
* pages in pagedesc */
VacPage *pagedesc; /* Descriptions of pages */
} VacPageListData;
typedef VPageListData *VPageList;
typedef VacPageListData *VacPageList;
typedef struct
{
......@@ -111,8 +111,8 @@ typedef VTupleLinkData *VTupleLink;
typedef struct VTupleMoveData
{
ItemPointerData tid; /* tuple ID */
VPageDescr vpd; /* where to move */
bool cleanVpd; /* clean vpd before using */
VacPage vacpage; /* where to move */
bool cleanVpd; /* clean vacpage before using */
} VTupleMoveData;
typedef VTupleMoveData *VTupleMove;
......
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