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Some changes to prepare for LONG attributes.

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Jan
This commit is contained in:
Jan Wieck
1999-12-16 22:20:03 +00:00
parent 5ca971a18a
commit 397e9b32a3
43 changed files with 235 additions and 115 deletions
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27
src/backend/access/common/heaptuple.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.58 1999/07/19 07:07:15 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.59 1999/12/16 22:19:34 wieck Exp $
*
* NOTES
* The old interface functions have been converted to macros
@@ -562,6 +562,7 @@ heap_copytuple(HeapTuple tuple)
newTuple = (HeapTuple) palloc(HEAPTUPLESIZE + tuple->t_len);
newTuple->t_len = tuple->t_len;
newTuple->t_self = tuple->t_self;
newTuple->t_datamcxt = CurrentMemoryContext;
newTuple->t_data = (HeapTupleHeader) ((char *) newTuple + HEAPTUPLESIZE);
memmove((char *) newTuple->t_data,
(char *) tuple->t_data, (int) tuple->t_len);
@@ -585,6 +586,7 @@ heap_copytuple_with_tuple(HeapTuple src, HeapTuple dest)
dest->t_len = src->t_len;
dest->t_self = src->t_self;
dest->t_datamcxt = CurrentMemoryContext;
dest->t_data = (HeapTupleHeader) palloc(src->t_len);
memmove((char *) dest->t_data,
(char *) src->t_data, (int) src->t_len);
@@ -682,6 +684,7 @@ heap_formtuple(TupleDesc tupleDescriptor,
len += ComputeDataSize(tupleDescriptor, value, nulls);
tuple = (HeapTuple) palloc(HEAPTUPLESIZE + len);
tuple->t_datamcxt = CurrentMemoryContext;
td = tuple->t_data = (HeapTupleHeader) ((char *) tuple + HEAPTUPLESIZE);
MemSet((char *) td, 0, (int) len);
@@ -792,6 +795,27 @@ heap_modifytuple(HeapTuple tuple,
return newTuple;
}
/* ----------------
* heap_freetuple
* ----------------
*/
void
heap_freetuple(HeapTuple htup)
{
extern int getpid();
if (htup->t_data != NULL)
if (htup->t_datamcxt != NULL && (char *)(htup->t_data) !=
((char *) htup + HEAPTUPLESIZE))
{
elog(NOTICE, "TELL Jan Wieck: heap_freetuple() found separate t_data");
}
pfree(htup);
}
/* ----------------------------------------------------------------
* other misc functions
* ----------------------------------------------------------------
@@ -814,6 +838,7 @@ heap_addheader(uint32 natts, /* max domain index */
hoff = len = MAXALIGN(len); /* be conservative */
len += structlen;
tuple = (HeapTuple) palloc(HEAPTUPLESIZE + len);
tuple->t_datamcxt = CurrentMemoryContext;
td = tuple->t_data = (HeapTupleHeader) ((char *) tuple + HEAPTUPLESIZE);
MemSet((char *) td, 0, (int) len);

40
src/backend/access/heap/heapam.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.60 1999/11/24 00:44:28 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.61 1999/12/16 22:19:36 wieck Exp $
*
*
* INTERFACE ROUTINES
@@ -117,6 +117,8 @@ initscan(HeapScanDesc scan,
* relation is empty
* ----------------
*/
scan->rs_ntup.t_datamcxt = scan->rs_ctup.t_datamcxt =
scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ntup.t_data = scan->rs_ctup.t_data =
scan->rs_ptup.t_data = NULL;
scan->rs_nbuf = scan->rs_cbuf = scan->rs_pbuf = InvalidBuffer;
@@ -127,8 +129,10 @@ initscan(HeapScanDesc scan,
* reverse scan
* ----------------
*/
scan->rs_ntup.t_datamcxt = scan->rs_ctup.t_datamcxt = NULL;
scan->rs_ntup.t_data = scan->rs_ctup.t_data = NULL;
scan->rs_nbuf = scan->rs_cbuf = InvalidBuffer;
scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ptup.t_data = NULL;
scan->rs_pbuf = UnknownBuffer;
}
@@ -138,8 +142,10 @@ initscan(HeapScanDesc scan,
* forward scan
* ----------------
*/
scan->rs_ctup.t_datamcxt = scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ctup.t_data = scan->rs_ptup.t_data = NULL;
scan->rs_cbuf = scan->rs_pbuf = InvalidBuffer;
scan->rs_ntup.t_datamcxt = NULL;
scan->rs_ntup.t_data = NULL;
scan->rs_nbuf = UnknownBuffer;
} /* invalid too */
@@ -272,6 +278,7 @@ heapgettup(Relation relation,
*/
if (!(pages = relation->rd_nblocks))
{
tuple->t_datamcxt = NULL;
tuple->t_data = NULL;
return;
}
@@ -290,6 +297,7 @@ heapgettup(Relation relation,
if (ItemPointerIsValid(tid) == false)
{
*buffer = InvalidBuffer;
tuple->t_datamcxt = NULL;
tuple->t_data = NULL;
return;
}
@@ -306,6 +314,7 @@ heapgettup(Relation relation,
lineoff = ItemPointerGetOffsetNumber(tid);
lpp = PageGetItemId(dp, lineoff);
tuple->t_datamcxt = NULL;
tuple->t_data = (HeapTupleHeader) PageGetItem((Page) dp, lpp);
tuple->t_len = ItemIdGetLength(lpp);
LockBuffer(*buffer, BUFFER_LOCK_UNLOCK);
@@ -376,6 +385,7 @@ heapgettup(Relation relation,
if (page >= pages)
{
*buffer = InvalidBuffer;
tuple->t_datamcxt = NULL;
tuple->t_data = NULL;
return;
}
@@ -415,6 +425,7 @@ heapgettup(Relation relation,
{
if (ItemIdIsUsed(lpp))
{
tuple->t_datamcxt = NULL;
tuple->t_data = (HeapTupleHeader) PageGetItem((Page) dp, lpp);
tuple->t_len = ItemIdGetLength(lpp);
ItemPointerSet(&(tuple->t_self), page, lineoff);
@@ -466,6 +477,7 @@ heapgettup(Relation relation,
if (BufferIsValid(*buffer))
ReleaseBuffer(*buffer);
*buffer = InvalidBuffer;
tuple->t_datamcxt = NULL;
tuple->t_data = NULL;
return;
}
@@ -836,6 +848,7 @@ heap_getnext(HeapScanDesc scandesc, int backw)
{
if (BufferIsValid(scan->rs_nbuf))
ReleaseBuffer(scan->rs_nbuf);
scan->rs_ntup.t_datamcxt = NULL;
scan->rs_ntup.t_data = NULL;
scan->rs_nbuf = UnknownBuffer;
return NULL;
@@ -892,10 +905,12 @@ heap_getnext(HeapScanDesc scandesc, int backw)
{
if (BufferIsValid(scan->rs_pbuf))
ReleaseBuffer(scan->rs_pbuf);
scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ptup.t_data = NULL;
scan->rs_pbuf = InvalidBuffer;
if (BufferIsValid(scan->rs_nbuf))
ReleaseBuffer(scan->rs_nbuf);
scan->rs_ntup.t_datamcxt = NULL;
scan->rs_ntup.t_data = NULL;
scan->rs_nbuf = InvalidBuffer;
return NULL;
@@ -903,6 +918,7 @@ heap_getnext(HeapScanDesc scandesc, int backw)
if (BufferIsValid(scan->rs_pbuf))
ReleaseBuffer(scan->rs_pbuf);
scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ptup.t_data = NULL;
scan->rs_pbuf = UnknownBuffer;
@@ -918,6 +934,7 @@ heap_getnext(HeapScanDesc scandesc, int backw)
{
if (BufferIsValid(scan->rs_pbuf))
ReleaseBuffer(scan->rs_pbuf);
scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ptup.t_data = NULL;
scan->rs_pbuf = UnknownBuffer;
HEAPDEBUG_3; /* heap_getnext returns NULL at end */
@@ -976,10 +993,12 @@ heap_getnext(HeapScanDesc scandesc, int backw)
{
if (BufferIsValid(scan->rs_nbuf))
ReleaseBuffer(scan->rs_nbuf);
scan->rs_ntup.t_datamcxt = NULL;
scan->rs_ntup.t_data = NULL;
scan->rs_nbuf = InvalidBuffer;
if (BufferIsValid(scan->rs_pbuf))
ReleaseBuffer(scan->rs_pbuf);
scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ptup.t_data = NULL;
scan->rs_pbuf = InvalidBuffer;
HEAPDEBUG_6; /* heap_getnext returning EOS */
@@ -988,6 +1007,7 @@ heap_getnext(HeapScanDesc scandesc, int backw)
if (BufferIsValid(scan->rs_nbuf))
ReleaseBuffer(scan->rs_nbuf);
scan->rs_ntup.t_datamcxt = NULL;
scan->rs_ntup.t_data = NULL;
scan->rs_nbuf = UnknownBuffer;
}
@@ -1066,10 +1086,12 @@ heap_fetch(Relation relation,
{
ReleaseBuffer(buffer);
*userbuf = InvalidBuffer;
tuple->t_datamcxt = NULL;
tuple->t_data = NULL;
return;
}
tuple->t_datamcxt = NULL;
tuple->t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp);
tuple->t_len = ItemIdGetLength(lp);
@@ -1156,6 +1178,7 @@ heap_get_latest_tid(Relation relation,
* ----------------
*/
tp.t_datamcxt = NULL;
t_data = tp.t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp);
tp.t_len = ItemIdGetLength(lp);
tp.t_self = *tid;
@@ -1270,6 +1293,7 @@ heap_delete(Relation relation, ItemPointer tid, ItemPointer ctid)
dp = (PageHeader) BufferGetPage(buffer);
lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(tid));
tp.t_datamcxt = NULL;
tp.t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp);
tp.t_len = ItemIdGetLength(lp);
tp.t_self = *tid;
@@ -1365,6 +1389,7 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
dp = (PageHeader) BufferGetPage(buffer);
lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(otid));
oldtup.t_datamcxt = NULL;
oldtup.t_data = (HeapTupleHeader) PageGetItem(dp, lp);
oldtup.t_len = ItemIdGetLength(lp);
oldtup.t_self = *otid;
@@ -1488,6 +1513,7 @@ heap_mark4update(Relation relation, HeapTuple tuple, Buffer *buffer)
dp = (PageHeader) BufferGetPage(*buffer);
lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(tid));
tuple->t_datamcxt = NULL;
tuple->t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp);
tuple->t_len = ItemIdGetLength(lp);
@@ -1665,10 +1691,14 @@ heap_restrpos(HeapScanDesc scan)
scan->rs_nbuf = InvalidBuffer;
if (!ItemPointerIsValid(&scan->rs_mptid))
{
scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ptup.t_data = NULL;
}
else
{
scan->rs_ptup.t_self = scan->rs_mptid;
scan->rs_ptup.t_datamcxt = NULL;
scan->rs_ptup.t_data = (HeapTupleHeader) 0x1; /* for heapgettup */
heapgettup(scan->rs_rd,
&(scan->rs_ptup),
@@ -1680,10 +1710,14 @@ heap_restrpos(HeapScanDesc scan)
}
if (!ItemPointerIsValid(&scan->rs_mctid))
{
scan->rs_ctup.t_datamcxt = NULL;
scan->rs_ctup.t_data = NULL;
}
else
{
scan->rs_ctup.t_self = scan->rs_mctid;
scan->rs_ctup.t_datamcxt = NULL;
scan->rs_ctup.t_data = (HeapTupleHeader) 0x1; /* for heapgettup */
heapgettup(scan->rs_rd,
&(scan->rs_ctup),
@@ -1695,9 +1729,13 @@ heap_restrpos(HeapScanDesc scan)
}
if (!ItemPointerIsValid(&scan->rs_mntid))
{
scan->rs_ntup.t_datamcxt = NULL;
scan->rs_ntup.t_data = NULL;
}
else
{
scan->rs_ntup.t_datamcxt = NULL;
scan->rs_ntup.t_self = scan->rs_mntid;
scan->rs_ntup.t_data = (HeapTupleHeader) 0x1; /* for heapgettup */
heapgettup(scan->rs_rd,