Zdenek Kotala wrote:
Pavan Deolasee napsal(a):
On Fri, Jul 4, 2008 at 4:25 PM, Heikki Linnakangas
<[EMAIL PROTECTED]> wrote:
No, there's a itemsz = MAXALIGN(itemsz) call before the check against
HashMaxItemSize.
Ah, right. Still should we just not MAXALIGN_DOWN the Max size to
reflect the practical limit on the itemsz ? It's more academical
though, so not a big deal.
Finally I use following formula:
#define HashMaxItemSize(page) \
MAXALIGN_DOWN(PageGetPageSize(page) - \
( SizeOfPageHeaderData + sizeof(ItemIdData) ) - \
MAXALIGN(sizeof(HashPageOpaqueData)) )
I did not replace PageGetPageSize(page), because other *MaxItemSize has
same interface.
Ok, fair enough.
There's another academical discrepancy between these two hunks:
*** src/backend/access/hash/hashpage.c 12 May 2008 00:00:44 -0000 1.75
--- src/backend/access/hash/hashpage.c 9 Jul 2008 11:30:09 -0000
***************
*** 407,413 ****
for (i = _hash_log2(metap->hashm_bsize); i > 0; --i)
{
if ((1 << i) <= (metap->hashm_bsize -
!
(MAXALIGN(sizeof(PageHeaderData)) +
MAXALIGN(sizeof(HashPageOpaqueData)))))
break;
}
--- 407,413 ----
for (i = _hash_log2(metap->hashm_bsize); i > 0; --i)
{
if ((1 << i) <= (metap->hashm_bsize -
!
(MAXALIGN(SizeOfPageHeaderData) +
MAXALIGN(sizeof(HashPageOpaqueData)))))
break;
}
and
*** src/include/access/hash.h 19 Jun 2008 00:46:05 -0000 1.88
--- src/include/access/hash.h 9 Jul 2008 11:30:10 -0000
***************
*** 192,198 ****
#define BMPG_SHIFT(metap) ((metap)->hashm_bmshift)
#define BMPG_MASK(metap) (BMPGSZ_BIT(metap) - 1)
#define HashPageGetBitmap(pg) \
! ((uint32 *) (((char *) (pg)) + MAXALIGN(sizeof(PageHeaderData))))
/*
* The number of bits in an ovflpage bitmap word.
--- 191,197 ----
#define BMPG_SHIFT(metap) ((metap)->hashm_bmshift)
#define BMPG_MASK(metap) (BMPGSZ_BIT(metap) - 1)
#define HashPageGetBitmap(pg) \
! ((uint32 *) (((char *) (pg)) + MAXALIGN(SizeOfPageHeaderData + sizeof(ItemIdData))))
/*
* The number of bits in an ovflpage bitmap word.
I admit I don't understand what that bitmap is, it looks like we're
assuming it can take up all the space between page header and the
special portion, without any line pointers, but in HashPageGetBitmap,
we're reserving space for one pointer. It looks like the actual size of
the bitmap is only the largest power of 2 below the maximum size, so
that won't be an issue in practice. That macro is actually doing the
same thing as PageGetContents, so I switched to using that. As that
moves the data sligthly on those bitmap pages, I guess we'll need a
catversion bump.
Attached is an updated patch. I also fixed some whitespace and comments
that were no longer valid. How does it look to you now?
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
? DEADJOE
? GNUmakefile
? buildlog
? config.log
? config.status
? page_04-heikki-1.patch
? contrib/pg_standby/.deps
? contrib/pg_standby/pg_standby
? contrib/spi/.deps
? doc/src/sgml/cvsmsg
? src/Makefile.global
? src/backend/postgres
? src/backend/access/common/.deps
? src/backend/access/gin/.deps
? src/backend/access/gist/.deps
? src/backend/access/hash/.deps
? src/backend/access/heap/.deps
? src/backend/access/index/.deps
? src/backend/access/nbtree/.deps
? src/backend/access/transam/.deps
? src/backend/bootstrap/.deps
? src/backend/catalog/.deps
? src/backend/catalog/postgres.bki
? src/backend/catalog/postgres.description
? src/backend/catalog/postgres.shdescription
? src/backend/commands/.deps
? src/backend/executor/.deps
? src/backend/lib/.deps
? src/backend/libpq/.deps
? src/backend/main/.deps
? src/backend/nodes/.deps
? src/backend/optimizer/geqo/.deps
? src/backend/optimizer/path/.deps
? src/backend/optimizer/plan/.deps
? src/backend/optimizer/prep/.deps
? src/backend/optimizer/util/.deps
? src/backend/parser/.deps
? src/backend/port/.deps
? src/backend/postmaster/.deps
? src/backend/regex/.deps
? src/backend/rewrite/.deps
? src/backend/snowball/.deps
? src/backend/snowball/snowball_create.sql
? src/backend/storage/buffer/.deps
? src/backend/storage/file/.deps
? src/backend/storage/freespace/.deps
? src/backend/storage/ipc/.deps
? src/backend/storage/large_object/.deps
? src/backend/storage/lmgr/.deps
? src/backend/storage/page/.deps
? src/backend/storage/smgr/.deps
? src/backend/tcop/.deps
? src/backend/tsearch/.deps
? src/backend/utils/.deps
? src/backend/utils/probes.h
? src/backend/utils/adt/.deps
? src/backend/utils/cache/.deps
? src/backend/utils/error/.deps
? src/backend/utils/fmgr/.deps
? src/backend/utils/hash/.deps
? src/backend/utils/init/.deps
? src/backend/utils/mb/.deps
? src/backend/utils/mb/conversion_procs/conversion_create.sql
? src/backend/utils/mb/conversion_procs/ascii_and_mic/.deps
? src/backend/utils/mb/conversion_procs/cyrillic_and_mic/.deps
? src/backend/utils/mb/conversion_procs/euc_cn_and_mic/.deps
? src/backend/utils/mb/conversion_procs/euc_jis_2004_and_shift_jis_2004/.deps
? src/backend/utils/mb/conversion_procs/euc_jp_and_sjis/.deps
? src/backend/utils/mb/conversion_procs/euc_kr_and_mic/.deps
? src/backend/utils/mb/conversion_procs/euc_tw_and_big5/.deps
? src/backend/utils/mb/conversion_procs/latin2_and_win1250/.deps
? src/backend/utils/mb/conversion_procs/latin_and_mic/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_ascii/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_big5/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_cyrillic/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_euc_cn/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_euc_jis_2004/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_euc_jp/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_euc_kr/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_euc_tw/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_gb18030/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_gbk/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_iso8859/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_iso8859_1/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_johab/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_shift_jis_2004/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_sjis/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_uhc/.deps
? src/backend/utils/mb/conversion_procs/utf8_and_win/.deps
? src/backend/utils/misc/.deps
? src/backend/utils/mmgr/.deps
? src/backend/utils/resowner/.deps
? src/backend/utils/sort/.deps
? src/backend/utils/time/.deps
? src/bin/initdb/.deps
? src/bin/initdb/initdb
? src/bin/pg_config/.deps
? src/bin/pg_config/pg_config
? src/bin/pg_controldata/.deps
? src/bin/pg_controldata/pg_controldata
? src/bin/pg_ctl/.deps
? src/bin/pg_ctl/pg_ctl
? src/bin/pg_dump/.deps
? src/bin/pg_dump/pg_dump
? src/bin/pg_dump/pg_dumpall
? src/bin/pg_dump/pg_restore
? src/bin/pg_resetxlog/.deps
? src/bin/pg_resetxlog/pg_resetxlog
? src/bin/psql/.deps
? src/bin/psql/d.c
? src/bin/psql/psql
? src/bin/scripts/.deps
? src/bin/scripts/clusterdb
? src/bin/scripts/createdb
? src/bin/scripts/createlang
? src/bin/scripts/createuser
? src/bin/scripts/dropdb
? src/bin/scripts/droplang
? src/bin/scripts/dropuser
? src/bin/scripts/reindexdb
? src/bin/scripts/vacuumdb
? src/include/pg_config.h
? src/include/stamp-h
? src/interfaces/ecpg/compatlib/.deps
? src/interfaces/ecpg/compatlib/exports.list
? src/interfaces/ecpg/compatlib/libecpg_compat.so.3.1
? src/interfaces/ecpg/ecpglib/.deps
? src/interfaces/ecpg/ecpglib/exports.list
? src/interfaces/ecpg/ecpglib/libecpg.so.6.1
? src/interfaces/ecpg/include/ecpg_config.h
? src/interfaces/ecpg/pgtypeslib/.deps
? src/interfaces/ecpg/pgtypeslib/exports.list
? src/interfaces/ecpg/pgtypeslib/libpgtypes.so.3.1
? src/interfaces/ecpg/preproc/.deps
? src/interfaces/ecpg/preproc/ecpg
? src/interfaces/libpq/.deps
? src/interfaces/libpq/exports.list
? src/interfaces/libpq/libpq.so.5.2
? src/pl/plpgsql/src/.deps
? src/port/.deps
? src/port/pg_config_paths.h
? src/test/regress/.deps
? src/test/regress/log
? src/test/regress/pg_regress
? src/test/regress/results
? src/test/regress/testtablespace
? src/test/regress/expected/constraints.out
? src/test/regress/expected/copy.out
? src/test/regress/expected/create_function_1.out
? src/test/regress/expected/create_function_2.out
? src/test/regress/expected/largeobject.out
? src/test/regress/expected/largeobject_1.out
? src/test/regress/expected/misc.out
? src/test/regress/expected/tablespace.out
? src/test/regress/sql/constraints.sql
? src/test/regress/sql/copy.sql
? src/test/regress/sql/create_function_1.sql
? src/test/regress/sql/create_function_2.sql
? src/test/regress/sql/largeobject.sql
? src/test/regress/sql/misc.sql
? src/test/regress/sql/tablespace.sql
? src/timezone/.deps
? src/timezone/zic
Index: src/backend/access/gist/gistutil.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/gist/gistutil.c,v
retrieving revision 1.29
diff -c -r1.29 gistutil.c
*** src/backend/access/gist/gistutil.c 19 Jun 2008 00:46:03 -0000 1.29
--- src/backend/access/gist/gistutil.c 9 Jul 2008 11:49:34 -0000
***************
*** 591,598 ****
/*
* Additionally check that the special area looks sane.
*/
! if (((PageHeader) (page))->pd_special !=
! (BLCKSZ - MAXALIGN(sizeof(GISTPageOpaqueData))))
ereport(ERROR,
(errcode(ERRCODE_INDEX_CORRUPTED),
errmsg("index \"%s\" contains corrupted page at block %u",
--- 591,597 ----
/*
* Additionally check that the special area looks sane.
*/
! if (PageGetSpecialSize(page) != MAXALIGN(sizeof(GISTPageOpaqueData)))
ereport(ERROR,
(errcode(ERRCODE_INDEX_CORRUPTED),
errmsg("index \"%s\" contains corrupted page at block %u",
Index: src/backend/access/hash/hashpage.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/hash/hashpage.c,v
retrieving revision 1.75
diff -c -r1.75 hashpage.c
*** src/backend/access/hash/hashpage.c 12 May 2008 00:00:44 -0000 1.75
--- src/backend/access/hash/hashpage.c 9 Jul 2008 11:49:34 -0000
***************
*** 407,413 ****
for (i = _hash_log2(metap->hashm_bsize); i > 0; --i)
{
if ((1 << i) <= (metap->hashm_bsize -
! (MAXALIGN(sizeof(PageHeaderData)) +
MAXALIGN(sizeof(HashPageOpaqueData)))))
break;
}
--- 407,413 ----
for (i = _hash_log2(metap->hashm_bsize); i > 0; --i)
{
if ((1 << i) <= (metap->hashm_bsize -
! (MAXALIGN(SizeOfPageHeaderData) +
MAXALIGN(sizeof(HashPageOpaqueData)))))
break;
}
Index: src/backend/access/hash/hashutil.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/hash/hashutil.c,v
retrieving revision 1.55
diff -c -r1.55 hashutil.c
*** src/backend/access/hash/hashutil.c 19 Jun 2008 00:46:03 -0000 1.55
--- src/backend/access/hash/hashutil.c 9 Jul 2008 11:49:34 -0000
***************
*** 164,171 ****
/*
* Additionally check that the special area looks sane.
*/
! if (((PageHeader) (page))->pd_special !=
! (BLCKSZ - MAXALIGN(sizeof(HashPageOpaqueData))))
ereport(ERROR,
(errcode(ERRCODE_INDEX_CORRUPTED),
errmsg("index \"%s\" contains corrupted page at block %u",
--- 164,170 ----
/*
* Additionally check that the special area looks sane.
*/
! if (PageGetSpecialSize(page) != MAXALIGN(sizeof(HashPageOpaqueData)))
ereport(ERROR,
(errcode(ERRCODE_INDEX_CORRUPTED),
errmsg("index \"%s\" contains corrupted page at block %u",
Index: src/backend/access/heap/heapam.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v
retrieving revision 1.260
diff -c -r1.260 heapam.c
*** src/backend/access/heap/heapam.c 19 Jun 2008 00:46:03 -0000 1.260
--- src/backend/access/heap/heapam.c 9 Jul 2008 11:49:34 -0000
***************
*** 1343,1349 ****
ItemPointer tid = &(tuple->t_self);
ItemId lp;
Buffer buffer;
! PageHeader dp;
OffsetNumber offnum;
bool valid;
--- 1343,1349 ----
ItemPointer tid = &(tuple->t_self);
ItemId lp;
Buffer buffer;
! Page page;
OffsetNumber offnum;
bool valid;
***************
*** 1356,1369 ****
* Need share lock on buffer to examine tuple commit status.
*/
LockBuffer(buffer, BUFFER_LOCK_SHARE);
! dp = (PageHeader) BufferGetPage(buffer);
/*
* We'd better check for out-of-range offnum in case of VACUUM since the
* TID was obtained.
*/
offnum = ItemPointerGetOffsetNumber(tid);
! if (offnum < FirstOffsetNumber || offnum > PageGetMaxOffsetNumber(dp))
{
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
if (keep_buf)
--- 1356,1369 ----
* Need share lock on buffer to examine tuple commit status.
*/
LockBuffer(buffer, BUFFER_LOCK_SHARE);
! page = BufferGetPage(buffer);
/*
* We'd better check for out-of-range offnum in case of VACUUM since the
* TID was obtained.
*/
offnum = ItemPointerGetOffsetNumber(tid);
! if (offnum < FirstOffsetNumber || offnum > PageGetMaxOffsetNumber(page))
{
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
if (keep_buf)
***************
*** 1380,1386 ****
/*
* get the item line pointer corresponding to the requested tid
*/
! lp = PageGetItemId(dp, offnum);
/*
* Must check for deleted tuple.
--- 1380,1386 ----
/*
* get the item line pointer corresponding to the requested tid
*/
! lp = PageGetItemId(page, offnum);
/*
* Must check for deleted tuple.
***************
*** 1402,1408 ****
/*
* fill in *tuple fields
*/
! tuple->t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp);
tuple->t_len = ItemIdGetLength(lp);
tuple->t_tableOid = RelationGetRelid(relation);
--- 1402,1408 ----
/*
* fill in *tuple fields
*/
! tuple->t_data = (HeapTupleHeader) PageGetItem(page, lp);
tuple->t_len = ItemIdGetLength(lp);
tuple->t_tableOid = RelationGetRelid(relation);
***************
*** 1627,1633 ****
for (;;)
{
Buffer buffer;
! PageHeader dp;
OffsetNumber offnum;
ItemId lp;
HeapTupleData tp;
--- 1627,1633 ----
for (;;)
{
Buffer buffer;
! Page page;
OffsetNumber offnum;
ItemId lp;
HeapTupleData tp;
***************
*** 1638,1644 ****
*/
buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(&ctid));
LockBuffer(buffer, BUFFER_LOCK_SHARE);
! dp = (PageHeader) BufferGetPage(buffer);
/*
* Check for bogus item number. This is not treated as an error
--- 1638,1644 ----
*/
buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(&ctid));
LockBuffer(buffer, BUFFER_LOCK_SHARE);
! page = BufferGetPage(buffer);
/*
* Check for bogus item number. This is not treated as an error
***************
*** 1646,1657 ****
* just assume that the prior tid is OK and return it unchanged.
*/
offnum = ItemPointerGetOffsetNumber(&ctid);
! if (offnum < FirstOffsetNumber || offnum > PageGetMaxOffsetNumber(dp))
{
UnlockReleaseBuffer(buffer);
break;
}
! lp = PageGetItemId(dp, offnum);
if (!ItemIdIsNormal(lp))
{
UnlockReleaseBuffer(buffer);
--- 1646,1657 ----
* just assume that the prior tid is OK and return it unchanged.
*/
offnum = ItemPointerGetOffsetNumber(&ctid);
! if (offnum < FirstOffsetNumber || offnum > PageGetMaxOffsetNumber(page))
{
UnlockReleaseBuffer(buffer);
break;
}
! lp = PageGetItemId(page, offnum);
if (!ItemIdIsNormal(lp))
{
UnlockReleaseBuffer(buffer);
***************
*** 1660,1666 ****
/* OK to access the tuple */
tp.t_self = ctid;
! tp.t_data = (HeapTupleHeader) PageGetItem(dp, lp);
tp.t_len = ItemIdGetLength(lp);
/*
--- 1660,1666 ----
/* OK to access the tuple */
tp.t_self = ctid;
! tp.t_data = (HeapTupleHeader) PageGetItem(page, lp);
tp.t_len = ItemIdGetLength(lp);
/*
***************
*** 1964,1970 ****
TransactionId xid = GetCurrentTransactionId();
ItemId lp;
HeapTupleData tp;
! PageHeader dp;
Buffer buffer;
bool have_tuple_lock = false;
bool iscombo;
--- 1964,1970 ----
TransactionId xid = GetCurrentTransactionId();
ItemId lp;
HeapTupleData tp;
! Page page;
Buffer buffer;
bool have_tuple_lock = false;
bool iscombo;
***************
*** 1974,1984 ****
buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(tid));
LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
! dp = (PageHeader) BufferGetPage(buffer);
! lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(tid));
Assert(ItemIdIsNormal(lp));
! tp.t_data = (HeapTupleHeader) PageGetItem(dp, lp);
tp.t_len = ItemIdGetLength(lp);
tp.t_self = *tid;
--- 1974,1984 ----
buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(tid));
LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
! page = BufferGetPage(buffer);
! lp = PageGetItemId(page, ItemPointerGetOffsetNumber(tid));
Assert(ItemIdIsNormal(lp));
! tp.t_data = (HeapTupleHeader) PageGetItem(page, lp);
tp.t_len = ItemIdGetLength(lp);
tp.t_self = *tid;
***************
*** 2112,2118 ****
* the subsequent page pruning will be a no-op and the hint will be
* cleared.
*/
! PageSetPrunable(dp, xid);
/* store transaction information of xact deleting the tuple */
tp.t_data->t_infomask &= ~(HEAP_XMAX_COMMITTED |
--- 2112,2118 ----
* the subsequent page pruning will be a no-op and the hint will be
* cleared.
*/
! PageSetPrunable(page, xid);
/* store transaction information of xact deleting the tuple */
tp.t_data->t_infomask &= ~(HEAP_XMAX_COMMITTED |
***************
*** 2150,2157 ****
recptr = XLogInsert(RM_HEAP_ID, XLOG_HEAP_DELETE, rdata);
! PageSetLSN(dp, recptr);
! PageSetTLI(dp, ThisTimeLineID);
}
END_CRIT_SECTION();
--- 2150,2157 ----
recptr = XLogInsert(RM_HEAP_ID, XLOG_HEAP_DELETE, rdata);
! PageSetLSN(page, recptr);
! PageSetTLI(page, ThisTimeLineID);
}
END_CRIT_SECTION();
***************
*** 2276,2282 ****
ItemId lp;
HeapTupleData oldtup;
HeapTuple heaptup;
! PageHeader dp;
Buffer buffer,
newbuf;
bool need_toast,
--- 2276,2282 ----
ItemId lp;
HeapTupleData oldtup;
HeapTuple heaptup;
! Page page;
Buffer buffer,
newbuf;
bool need_toast,
***************
*** 2306,2316 ****
buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(otid));
LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
! dp = (PageHeader) BufferGetPage(buffer);
! lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(otid));
Assert(ItemIdIsNormal(lp));
! oldtup.t_data = (HeapTupleHeader) PageGetItem(dp, lp);
oldtup.t_len = ItemIdGetLength(lp);
oldtup.t_self = *otid;
--- 2306,2316 ----
buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(otid));
LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
! page = BufferGetPage(buffer);
! lp = PageGetItemId(page, ItemPointerGetOffsetNumber(otid));
Assert(ItemIdIsNormal(lp));
! oldtup.t_data = (HeapTupleHeader) PageGetItem(page, lp);
oldtup.t_len = ItemIdGetLength(lp);
oldtup.t_self = *otid;
***************
*** 2491,2497 ****
HeapTupleHasExternal(newtup) ||
newtup->t_len > TOAST_TUPLE_THRESHOLD);
! pagefree = PageGetHeapFreeSpace((Page) dp);
newtupsize = MAXALIGN(newtup->t_len);
--- 2491,2497 ----
HeapTupleHasExternal(newtup) ||
newtup->t_len > TOAST_TUPLE_THRESHOLD);
! pagefree = PageGetHeapFreeSpace(page);
newtupsize = MAXALIGN(newtup->t_len);
***************
*** 2557,2563 ****
/* Re-acquire the lock on the old tuple's page. */
LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
/* Re-check using the up-to-date free space */
! pagefree = PageGetHeapFreeSpace((Page) dp);
if (newtupsize > pagefree)
{
/*
--- 2557,2563 ----
/* Re-acquire the lock on the old tuple's page. */
LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
/* Re-check using the up-to-date free space */
! pagefree = PageGetHeapFreeSpace(page);
if (newtupsize > pagefree)
{
/*
***************
*** 2603,2609 ****
else
{
/* Set a hint that the old page could use prune/defrag */
! PageSetFull(dp);
}
/* NO EREPORT(ERROR) from here till changes are logged */
--- 2603,2609 ----
else
{
/* Set a hint that the old page could use prune/defrag */
! PageSetFull(page);
}
/* NO EREPORT(ERROR) from here till changes are logged */
***************
*** 2621,2627 ****
* not to optimize for aborts. Note that heap_xlog_update must be kept in
* sync if this decision changes.
*/
! PageSetPrunable(dp, xid);
if (use_hot_update)
{
--- 2621,2627 ----
* not to optimize for aborts. Note that heap_xlog_update must be kept in
* sync if this decision changes.
*/
! PageSetPrunable(page, xid);
if (use_hot_update)
{
***************
*** 2946,2952 ****
HTSU_Result result;
ItemPointer tid = &(tuple->t_self);
ItemId lp;
! PageHeader dp;
TransactionId xid;
TransactionId xmax;
uint16 old_infomask;
--- 2946,2952 ----
HTSU_Result result;
ItemPointer tid = &(tuple->t_self);
ItemId lp;
! Page page;
TransactionId xid;
TransactionId xmax;
uint16 old_infomask;
***************
*** 2959,2969 ****
*buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(tid));
LockBuffer(*buffer, BUFFER_LOCK_EXCLUSIVE);
! dp = (PageHeader) BufferGetPage(*buffer);
! lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(tid));
Assert(ItemIdIsNormal(lp));
! tuple->t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp);
tuple->t_len = ItemIdGetLength(lp);
tuple->t_tableOid = RelationGetRelid(relation);
--- 2959,2969 ----
*buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(tid));
LockBuffer(*buffer, BUFFER_LOCK_EXCLUSIVE);
! page = BufferGetPage(*buffer);
! lp = PageGetItemId(page, ItemPointerGetOffsetNumber(tid));
Assert(ItemIdIsNormal(lp));
! tuple->t_data = (HeapTupleHeader) PageGetItem(page, lp);
tuple->t_len = ItemIdGetLength(lp);
tuple->t_tableOid = RelationGetRelid(relation);
***************
*** 3302,3309 ****
recptr = XLogInsert(RM_HEAP_ID, XLOG_HEAP_LOCK, rdata);
! PageSetLSN(dp, recptr);
! PageSetTLI(dp, ThisTimeLineID);
}
END_CRIT_SECTION();
--- 3302,3309 ----
recptr = XLogInsert(RM_HEAP_ID, XLOG_HEAP_LOCK, rdata);
! PageSetLSN(page, recptr);
! PageSetTLI(page, ThisTimeLineID);
}
END_CRIT_SECTION();
Index: src/backend/access/heap/hio.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/heap/hio.c,v
retrieving revision 1.71
diff -c -r1.71 hio.c
*** src/backend/access/heap/hio.c 8 Jun 2008 22:00:47 -0000 1.71
--- src/backend/access/heap/hio.c 9 Jul 2008 11:49:34 -0000
***************
*** 107,113 ****
Buffer otherBuffer, bool use_fsm)
{
Buffer buffer = InvalidBuffer;
! Page pageHeader;
Size pageFreeSpace,
saveFreeSpace;
BlockNumber targetBlock,
--- 107,113 ----
Buffer otherBuffer, bool use_fsm)
{
Buffer buffer = InvalidBuffer;
! Page page;
Size pageFreeSpace,
saveFreeSpace;
BlockNumber targetBlock,
***************
*** 218,225 ****
* Now we can check to see if there's enough free space here. If so,
* we're done.
*/
! pageHeader = (Page) BufferGetPage(buffer);
! pageFreeSpace = PageGetHeapFreeSpace(pageHeader);
if (len + saveFreeSpace <= pageFreeSpace)
{
/* use this page as future insert target, too */
--- 218,225 ----
* Now we can check to see if there's enough free space here. If so,
* we're done.
*/
! page = BufferGetPage(buffer);
! pageFreeSpace = PageGetHeapFreeSpace(page);
if (len + saveFreeSpace <= pageFreeSpace)
{
/* use this page as future insert target, too */
***************
*** 303,318 ****
* is empty (this should never happen, but if it does we don't want to
* risk wiping out valid data).
*/
! pageHeader = (Page) BufferGetPage(buffer);
! if (!PageIsNew((PageHeader) pageHeader))
elog(ERROR, "page %u of relation \"%s\" should be empty but is not",
BufferGetBlockNumber(buffer),
RelationGetRelationName(relation));
! PageInit(pageHeader, BufferGetPageSize(buffer), 0);
! if (len > PageGetHeapFreeSpace(pageHeader))
{
/* We should not get here given the test at the top */
elog(PANIC, "tuple is too big: size %lu", (unsigned long) len);
--- 303,318 ----
* is empty (this should never happen, but if it does we don't want to
* risk wiping out valid data).
*/
! page = BufferGetPage(buffer);
! if (!PageIsNew(page))
elog(ERROR, "page %u of relation \"%s\" should be empty but is not",
BufferGetBlockNumber(buffer),
RelationGetRelationName(relation));
! PageInit(page, BufferGetPageSize(buffer), 0);
! if (len > PageGetHeapFreeSpace(page))
{
/* We should not get here given the test at the top */
elog(PANIC, "tuple is too big: size %lu", (unsigned long) len);
Index: src/backend/access/heap/pruneheap.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/heap/pruneheap.c,v
retrieving revision 1.15
diff -c -r1.15 pruneheap.c
*** src/backend/access/heap/pruneheap.c 19 Jun 2008 00:46:03 -0000 1.15
--- src/backend/access/heap/pruneheap.c 9 Jul 2008 11:49:34 -0000
***************
*** 72,78 ****
void
heap_page_prune_opt(Relation relation, Buffer buffer, TransactionId OldestXmin)
{
! PageHeader dp = (PageHeader) BufferGetPage(buffer);
Size minfree;
/*
--- 72,78 ----
void
heap_page_prune_opt(Relation relation, Buffer buffer, TransactionId OldestXmin)
{
! Page page = BufferGetPage(buffer);
Size minfree;
/*
***************
*** 81,87 ****
* Forget it if page is not hinted to contain something prunable that's
* older than OldestXmin.
*/
! if (!PageIsPrunable(dp, OldestXmin))
return;
/*
--- 81,87 ----
* Forget it if page is not hinted to contain something prunable that's
* older than OldestXmin.
*/
! if (!PageIsPrunable(page, OldestXmin))
return;
/*
***************
*** 100,106 ****
HEAP_DEFAULT_FILLFACTOR);
minfree = Max(minfree, BLCKSZ / 10);
! if (PageIsFull(dp) || PageGetHeapFreeSpace((Page) dp) < minfree)
{
/* OK, try to get exclusive buffer lock */
if (!ConditionalLockBufferForCleanup(buffer))
--- 100,106 ----
HEAP_DEFAULT_FILLFACTOR);
minfree = Max(minfree, BLCKSZ / 10);
! if (PageIsFull(page) || PageGetHeapFreeSpace(page) < minfree)
{
/* OK, try to get exclusive buffer lock */
if (!ConditionalLockBufferForCleanup(buffer))
***************
*** 112,118 ****
* prune. (We needn't recheck PageIsPrunable, since no one else could
* have pruned while we hold pin.)
*/
! if (PageIsFull(dp) || PageGetHeapFreeSpace((Page) dp) < minfree)
{
/* OK to prune (though not to remove redirects) */
(void) heap_page_prune(relation, buffer, OldestXmin, false, true);
--- 112,118 ----
* prune. (We needn't recheck PageIsPrunable, since no one else could
* have pruned while we hold pin.)
*/
! if (PageIsFull(page) || PageGetHeapFreeSpace(page) < minfree)
{
/* OK to prune (though not to remove redirects) */
(void) heap_page_prune(relation, buffer, OldestXmin, false, true);
Index: src/backend/access/nbtree/nbtpage.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v
retrieving revision 1.109
diff -c -r1.109 nbtpage.c
*** src/backend/access/nbtree/nbtpage.c 12 May 2008 00:00:45 -0000 1.109
--- src/backend/access/nbtree/nbtpage.c 9 Jul 2008 11:49:34 -0000
***************
*** 436,443 ****
/*
* Additionally check that the special area looks sane.
*/
! if (((PageHeader) (page))->pd_special !=
! (BLCKSZ - MAXALIGN(sizeof(BTPageOpaqueData))))
ereport(ERROR,
(errcode(ERRCODE_INDEX_CORRUPTED),
errmsg("index \"%s\" contains corrupted page at block %u",
--- 436,442 ----
/*
* Additionally check that the special area looks sane.
*/
! if ( (PageGetSpecialSize(page)) != MAXALIGN(sizeof(BTPageOpaqueData)))
ereport(ERROR,
(errcode(ERRCODE_INDEX_CORRUPTED),
errmsg("index \"%s\" contains corrupted page at block %u",
***************
*** 555,561 ****
/* Initialize the new page before returning it */
page = BufferGetPage(buf);
! Assert(PageIsNew((PageHeader) page));
_bt_pageinit(page, BufferGetPageSize(buf));
}
--- 554,560 ----
/* Initialize the new page before returning it */
page = BufferGetPage(buf);
! Assert(PageIsNew(page));
_bt_pageinit(page, BufferGetPageSize(buf));
}
Index: src/backend/access/transam/xlog.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v
retrieving revision 1.315
diff -c -r1.315 xlog.c
*** src/backend/access/transam/xlog.c 30 Jun 2008 22:10:43 -0000 1.315
--- src/backend/access/transam/xlog.c 9 Jul 2008 11:49:34 -0000
***************
*** 1017,1035 ****
XLogCheckBuffer(XLogRecData *rdata, bool doPageWrites,
XLogRecPtr *lsn, BkpBlock *bkpb)
{
! PageHeader page;
! page = (PageHeader) BufferGetBlock(rdata->buffer);
/*
* XXX We assume page LSN is first data on *every* page that can be passed
* to XLogInsert, whether it otherwise has the standard page layout or
* not.
*/
! *lsn = page->pd_lsn;
if (doPageWrites &&
! XLByteLE(page->pd_lsn, RedoRecPtr))
{
/*
* The page needs to be backed up, so set up *bkpb
--- 1017,1035 ----
XLogCheckBuffer(XLogRecData *rdata, bool doPageWrites,
XLogRecPtr *lsn, BkpBlock *bkpb)
{
! Page page;
! page = BufferGetPage(rdata->buffer);
/*
* XXX We assume page LSN is first data on *every* page that can be passed
* to XLogInsert, whether it otherwise has the standard page layout or
* not.
*/
! *lsn = PageGetLSN(page);
if (doPageWrites &&
! XLByteLE(PageGetLSN(page), RedoRecPtr))
{
/*
* The page needs to be backed up, so set up *bkpb
Index: src/backend/access/transam/xlogutils.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/transam/xlogutils.c,v
retrieving revision 1.56
diff -c -r1.56 xlogutils.c
*** src/backend/access/transam/xlogutils.c 19 Jun 2008 00:46:03 -0000 1.56
--- src/backend/access/transam/xlogutils.c 9 Jul 2008 11:49:34 -0000
***************
*** 279,285 ****
/* check that page has been initialized */
Page page = (Page) BufferGetPage(buffer);
! if (PageIsNew((PageHeader) page))
{
UnlockReleaseBuffer(buffer);
log_invalid_page(rnode, blkno, true);
--- 279,285 ----
/* check that page has been initialized */
Page page = (Page) BufferGetPage(buffer);
! if (PageIsNew(page))
{
UnlockReleaseBuffer(buffer);
log_invalid_page(rnode, blkno, true);
Index: src/backend/commands/sequence.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/commands/sequence.c,v
retrieving revision 1.153
diff -c -r1.153 sequence.c
*** src/backend/commands/sequence.c 12 Jun 2008 09:12:30 -0000 1.153
--- src/backend/commands/sequence.c 9 Jul 2008 11:49:34 -0000
***************
*** 109,115 ****
Oid seqoid;
Relation rel;
Buffer buf;
! PageHeader page;
sequence_magic *sm;
HeapTuple tuple;
TupleDesc tupDesc;
--- 109,115 ----
Oid seqoid;
Relation rel;
Buffer buf;
! Page page;
sequence_magic *sm;
HeapTuple tuple;
TupleDesc tupDesc;
***************
*** 212,220 ****
buf = ReadBuffer(rel, P_NEW);
Assert(BufferGetBlockNumber(buf) == 0);
! page = (PageHeader) BufferGetPage(buf);
! PageInit((Page) page, BufferGetPageSize(buf), sizeof(sequence_magic));
sm = (sequence_magic *) PageGetSpecialPointer(page);
sm->magic = SEQ_MAGIC;
--- 212,220 ----
buf = ReadBuffer(rel, P_NEW);
Assert(BufferGetBlockNumber(buf) == 0);
! page = BufferGetPage(buf);
! PageInit(page, BufferGetPageSize(buf), sizeof(sequence_magic));
sm = (sequence_magic *) PageGetSpecialPointer(page);
sm->magic = SEQ_MAGIC;
***************
*** 954,960 ****
static Form_pg_sequence
read_info(SeqTable elm, Relation rel, Buffer *buf)
{
! PageHeader page;
ItemId lp;
HeapTupleData tuple;
sequence_magic *sm;
--- 954,960 ----
static Form_pg_sequence
read_info(SeqTable elm, Relation rel, Buffer *buf)
{
! Page page;
ItemId lp;
HeapTupleData tuple;
sequence_magic *sm;
***************
*** 963,969 ****
*buf = ReadBuffer(rel, 0);
LockBuffer(*buf, BUFFER_LOCK_EXCLUSIVE);
! page = (PageHeader) BufferGetPage(*buf);
sm = (sequence_magic *) PageGetSpecialPointer(page);
if (sm->magic != SEQ_MAGIC)
--- 963,969 ----
*buf = ReadBuffer(rel, 0);
LockBuffer(*buf, BUFFER_LOCK_EXCLUSIVE);
! page = BufferGetPage(*buf);
sm = (sequence_magic *) PageGetSpecialPointer(page);
if (sm->magic != SEQ_MAGIC)
***************
*** 972,978 ****
lp = PageGetItemId(page, FirstOffsetNumber);
Assert(ItemIdIsNormal(lp));
! tuple.t_data = (HeapTupleHeader) PageGetItem((Page) page, lp);
seq = (Form_pg_sequence) GETSTRUCT(&tuple);
--- 972,978 ----
lp = PageGetItemId(page, FirstOffsetNumber);
Assert(ItemIdIsNormal(lp));
! tuple.t_data = (HeapTupleHeader) PageGetItem(page, lp);
seq = (Form_pg_sequence) GETSTRUCT(&tuple);
Index: src/backend/commands/trigger.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/commands/trigger.c,v
retrieving revision 1.234
diff -c -r1.234 trigger.c
*** src/backend/commands/trigger.c 15 May 2008 00:17:39 -0000 1.234
--- src/backend/commands/trigger.c 9 Jul 2008 11:49:34 -0000
***************
*** 2203,2219 ****
}
else
{
! PageHeader dp;
ItemId lp;
buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(tid));
! dp = (PageHeader) BufferGetPage(buffer);
! lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(tid));
Assert(ItemIdIsNormal(lp));
! tuple.t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp);
tuple.t_len = ItemIdGetLength(lp);
tuple.t_self = *tid;
tuple.t_tableOid = RelationGetRelid(relation);
--- 2203,2219 ----
}
else
{
! Page page;
ItemId lp;
buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(tid));
! page = BufferGetPage(buffer);
! lp = PageGetItemId(page, ItemPointerGetOffsetNumber(tid));
Assert(ItemIdIsNormal(lp));
! tuple.t_data = (HeapTupleHeader) PageGetItem(page, lp);
tuple.t_len = ItemIdGetLength(lp);
tuple.t_self = *tid;
tuple.t_tableOid = RelationGetRelid(relation);
Index: src/backend/optimizer/util/plancat.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/optimizer/util/plancat.c,v
retrieving revision 1.147
diff -c -r1.147 plancat.c
*** src/backend/optimizer/util/plancat.c 19 Jun 2008 00:46:04 -0000 1.147
--- src/backend/optimizer/util/plancat.c 9 Jul 2008 11:49:34 -0000
***************
*** 429,435 ****
tuple_width += sizeof(HeapTupleHeaderData);
tuple_width += sizeof(ItemPointerData);
/* note: integer division is intentional here */
! density = (BLCKSZ - sizeof(PageHeaderData)) / tuple_width;
}
*tuples = rint(density * (double) curpages);
break;
--- 429,435 ----
tuple_width += sizeof(HeapTupleHeaderData);
tuple_width += sizeof(ItemPointerData);
/* note: integer division is intentional here */
! density = (BLCKSZ - SizeOfPageHeaderData) / tuple_width;
}
*tuples = rint(density * (double) curpages);
break;
Index: src/backend/storage/buffer/bufmgr.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v
retrieving revision 1.233
diff -c -r1.233 bufmgr.c
*** src/backend/storage/buffer/bufmgr.c 19 Jun 2008 00:46:05 -0000 1.233
--- src/backend/storage/buffer/bufmgr.c 9 Jul 2008 11:49:34 -0000
***************
*** 263,269 ****
* always have left a zero-filled buffer, complain if not PageIsNew.
*/
bufBlock = isLocalBuf ? LocalBufHdrGetBlock(bufHdr) : BufHdrGetBlock(bufHdr);
! if (!PageIsNew((PageHeader) bufBlock))
ereport(ERROR,
(errmsg("unexpected data beyond EOF in block %u of relation %u/%u/%u",
blockNum, smgr->smgr_rnode.spcNode, smgr->smgr_rnode.dbNode, smgr->smgr_rnode.relNode),
--- 263,269 ----
* always have left a zero-filled buffer, complain if not PageIsNew.
*/
bufBlock = isLocalBuf ? LocalBufHdrGetBlock(bufHdr) : BufHdrGetBlock(bufHdr);
! if (!PageIsNew((Page) bufBlock))
ereport(ERROR,
(errmsg("unexpected data beyond EOF in block %u of relation %u/%u/%u",
blockNum, smgr->smgr_rnode.spcNode, smgr->smgr_rnode.dbNode, smgr->smgr_rnode.relNode),
Index: src/include/access/hash.h
===================================================================
RCS file: /cvsroot/pgsql/src/include/access/hash.h,v
retrieving revision 1.88
diff -c -r1.88 hash.h
*** src/include/access/hash.h 19 Jun 2008 00:46:05 -0000 1.88
--- src/include/access/hash.h 9 Jul 2008 11:49:35 -0000
***************
*** 166,175 ****
* Maximum size of a hash index item (it's okay to have only one per page)
*/
#define HashMaxItemSize(page) \
! (PageGetPageSize(page) - \
! sizeof(PageHeaderData) - \
! MAXALIGN(sizeof(HashPageOpaqueData)) - \
! sizeof(ItemIdData))
#define HASH_MIN_FILLFACTOR 10
#define HASH_DEFAULT_FILLFACTOR 75
--- 166,175 ----
* Maximum size of a hash index item (it's okay to have only one per page)
*/
#define HashMaxItemSize(page) \
! MAXALIGN_DOWN(PageGetPageSize(page) - \
! SizeOfPageHeaderData - \
! sizeof(ItemIdData) - \
! MAXALIGN(sizeof(HashPageOpaqueData)))
#define HASH_MIN_FILLFACTOR 10
#define HASH_DEFAULT_FILLFACTOR 75
***************
*** 191,198 ****
#define BMPGSZ_BIT(metap) ((metap)->hashm_bmsize << BYTE_TO_BIT)
#define BMPG_SHIFT(metap) ((metap)->hashm_bmshift)
#define BMPG_MASK(metap) (BMPGSZ_BIT(metap) - 1)
! #define HashPageGetBitmap(pg) \
! ((uint32 *) (((char *) (pg)) + MAXALIGN(sizeof(PageHeaderData))))
/*
* The number of bits in an ovflpage bitmap word.
--- 191,197 ----
#define BMPGSZ_BIT(metap) ((metap)->hashm_bmsize << BYTE_TO_BIT)
#define BMPG_SHIFT(metap) ((metap)->hashm_bmshift)
#define BMPG_MASK(metap) (BMPGSZ_BIT(metap) - 1)
! #define HashPageGetBitmap(pg) ((uint32 *) PageGetContents(pg))
/*
* The number of bits in an ovflpage bitmap word.
Index: src/include/access/htup.h
===================================================================
RCS file: /cvsroot/pgsql/src/include/access/htup.h,v
retrieving revision 1.99
diff -c -r1.99 htup.h
*** src/include/access/htup.h 12 May 2008 00:00:53 -0000 1.99
--- src/include/access/htup.h 9 Jul 2008 11:49:35 -0000
***************
*** 362,373 ****
* other stuff that has to be on a disk page. Since heap pages use no
* "special space", there's no deduction for that.
*
! * NOTE: we do not need to count an ItemId for the tuple because
! * sizeof(PageHeaderData) includes the first ItemId on the page. But beware
! * of assuming that, say, you can fit 2 tuples of size MaxHeapTupleSize/2
! * on the same page.
*/
! #define MaxHeapTupleSize (BLCKSZ - MAXALIGN(sizeof(PageHeaderData)))
/*
* MaxHeapTuplesPerPage is an upper bound on the number of tuples that can
--- 362,371 ----
* other stuff that has to be on a disk page. Since heap pages use no
* "special space", there's no deduction for that.
*
! * NOTE: we include the size of the ItemId for the tuple, so don't assume that
! * you can, say, fit 2 tuples of size MaxHeapTupleSize/2 on the same page.
*/
! #define MaxHeapTupleSize (BLCKSZ - MAXALIGN(SizeOfPageHeaderData + sizeof(ItemIdData)))
/*
* MaxHeapTuplesPerPage is an upper bound on the number of tuples that can
***************
*** 381,387 ****
* require increases in the size of work arrays.
*/
#define MaxHeapTuplesPerPage \
! ((int) ((BLCKSZ - offsetof(PageHeaderData, pd_linp)) / \
(MAXALIGN(offsetof(HeapTupleHeaderData, t_bits)) + sizeof(ItemIdData))))
/*
--- 379,385 ----
* require increases in the size of work arrays.
*/
#define MaxHeapTuplesPerPage \
! ((int) ((BLCKSZ - SizeOfPageHeaderData) / \
(MAXALIGN(offsetof(HeapTupleHeaderData, t_bits)) + sizeof(ItemIdData))))
/*
Index: src/include/access/itup.h
===================================================================
RCS file: /cvsroot/pgsql/src/include/access/itup.h,v
retrieving revision 1.49
diff -c -r1.49 itup.h
*** src/include/access/itup.h 1 Jan 2008 19:45:56 -0000 1.49
--- src/include/access/itup.h 9 Jul 2008 11:49:35 -0000
***************
*** 134,140 ****
* must be maxaligned, and it must have an associated item pointer.
*/
#define MaxIndexTuplesPerPage \
! ((int) ((BLCKSZ - offsetof(PageHeaderData, pd_linp)) / \
(MAXALIGN(sizeof(IndexTupleData) + 1) + sizeof(ItemIdData))))
--- 134,140 ----
* must be maxaligned, and it must have an associated item pointer.
*/
#define MaxIndexTuplesPerPage \
! ((int) ((BLCKSZ - SizeOfPageHeaderData) / \
(MAXALIGN(sizeof(IndexTupleData) + 1) + sizeof(ItemIdData))))
Index: src/include/access/nbtree.h
===================================================================
RCS file: /cvsroot/pgsql/src/include/access/nbtree.h,v
retrieving revision 1.120
diff -c -r1.120 nbtree.h
*** src/include/access/nbtree.h 19 Jun 2008 00:46:06 -0000 1.120
--- src/include/access/nbtree.h 9 Jul 2008 11:49:35 -0000
***************
*** 113,125 ****
*
* We actually need to be able to fit three items on every page,
* so restrict any one item to 1/3 the per-page available space.
- *
- * Note: sizeof(PageHeaderData) includes the first ItemId, but we have
- * to allow for 2 more, as well as the end-of-page special space.
*/
#define BTMaxItemSize(page) \
MAXALIGN_DOWN((PageGetPageSize(page) - \
! MAXALIGN(sizeof(PageHeaderData) + 2*sizeof(ItemIdData)) - \
MAXALIGN(sizeof(BTPageOpaqueData))) / 3)
/*
--- 113,122 ----
*
* We actually need to be able to fit three items on every page,
* so restrict any one item to 1/3 the per-page available space.
*/
#define BTMaxItemSize(page) \
MAXALIGN_DOWN((PageGetPageSize(page) - \
! MAXALIGN(SizeOfPageHeaderData + 3*sizeof(ItemIdData)) - \
MAXALIGN(sizeof(BTPageOpaqueData))) / 3)
/*
Index: src/include/access/tuptoaster.h
===================================================================
RCS file: /cvsroot/pgsql/src/include/access/tuptoaster.h,v
retrieving revision 1.40
diff -c -r1.40 tuptoaster.h
*** src/include/access/tuptoaster.h 19 Jun 2008 00:46:06 -0000 1.40
--- src/include/access/tuptoaster.h 9 Jul 2008 11:49:35 -0000
***************
*** 46,55 ****
*/
#define TOAST_TUPLES_PER_PAGE 4
- /* Note: sizeof(PageHeaderData) includes the first ItemId on the page */
#define TOAST_TUPLE_THRESHOLD \
MAXALIGN_DOWN((BLCKSZ - \
! MAXALIGN(sizeof(PageHeaderData) + (TOAST_TUPLES_PER_PAGE-1) * sizeof(ItemIdData))) \
/ TOAST_TUPLES_PER_PAGE)
#define TOAST_TUPLE_TARGET TOAST_TUPLE_THRESHOLD
--- 46,54 ----
*/
#define TOAST_TUPLES_PER_PAGE 4
#define TOAST_TUPLE_THRESHOLD \
MAXALIGN_DOWN((BLCKSZ - \
! MAXALIGN(SizeOfPageHeaderData + (TOAST_TUPLES_PER_PAGE) * sizeof(ItemIdData))) \
/ TOAST_TUPLES_PER_PAGE)
#define TOAST_TUPLE_TARGET TOAST_TUPLE_THRESHOLD
***************
*** 73,82 ****
*/
#define EXTERN_TUPLES_PER_PAGE 4 /* tweak only this */
- /* Note: sizeof(PageHeaderData) includes the first ItemId on the page */
#define EXTERN_TUPLE_MAX_SIZE \
MAXALIGN_DOWN((BLCKSZ - \
! MAXALIGN(sizeof(PageHeaderData) + (EXTERN_TUPLES_PER_PAGE-1) * sizeof(ItemIdData))) \
/ EXTERN_TUPLES_PER_PAGE)
#define TOAST_MAX_CHUNK_SIZE \
--- 72,80 ----
*/
#define EXTERN_TUPLES_PER_PAGE 4 /* tweak only this */
#define EXTERN_TUPLE_MAX_SIZE \
MAXALIGN_DOWN((BLCKSZ - \
! MAXALIGN(SizeOfPageHeaderData + (EXTERN_TUPLES_PER_PAGE) * sizeof(ItemIdData))) \
/ EXTERN_TUPLES_PER_PAGE)
#define TOAST_MAX_CHUNK_SIZE \
--
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