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Diffstat (limited to 'src/backend/access/gist/gistutil.c')
-rw-r--r--src/backend/access/gist/gistutil.c108
1 files changed, 65 insertions, 43 deletions
diff --git a/src/backend/access/gist/gistutil.c b/src/backend/access/gist/gistutil.c
index 03c5773d4d..1754a10369 100644
--- a/src/backend/access/gist/gistutil.c
+++ b/src/backend/access/gist/gistutil.c
@@ -4,15 +4,17 @@
* utilities routines for the postgres GiST index access method.
*
*
- * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/gist/gistutil.c,v 1.35 2010/01/02 16:57:34 momjian Exp $
+ * src/backend/access/gist/gistutil.c
*-------------------------------------------------------------------------
*/
#include "postgres.h"
+#include <math.h>
+
#include "access/gist_private.h"
#include "access/reloptions.h"
#include "storage/freespace.h"
@@ -152,7 +154,7 @@ gistfillitupvec(IndexTuple *vec, int veclen, int *memlen)
* invalid tuple. Resulting Datums aren't compressed.
*/
-bool
+void
gistMakeUnionItVec(GISTSTATE *giststate, IndexTuple *itvec, int len, int startkey,
Datum *attr, bool *isnull)
{
@@ -180,10 +182,6 @@ gistMakeUnionItVec(GISTSTATE *giststate, IndexTuple *itvec, int len, int startke
Datum datum;
bool IsNull;
- if (GistTupleIsInvalid(itvec[j]))
- return FALSE; /* signals that union with invalid tuple =>
- * result is invalid */
-
datum = index_getattr(itvec[j], i + 1, giststate->tupdesc, &IsNull);
if (IsNull)
continue;
@@ -211,15 +209,14 @@ gistMakeUnionItVec(GISTSTATE *giststate, IndexTuple *itvec, int len, int startke
}
/* Make union and store in attr array */
- attr[i] = FunctionCall2(&giststate->unionFn[i],
- PointerGetDatum(evec),
- PointerGetDatum(&attrsize));
+ attr[i] = FunctionCall2Coll(&giststate->unionFn[i],
+ giststate->supportCollation[i],
+ PointerGetDatum(evec),
+ PointerGetDatum(&attrsize));
isnull[i] = FALSE;
}
}
-
- return TRUE;
}
/*
@@ -231,8 +228,7 @@ gistunion(Relation r, IndexTuple *itvec, int len, GISTSTATE *giststate)
{
memset(isnullS, TRUE, sizeof(bool) * giststate->tupdesc->natts);
- if (!gistMakeUnionItVec(giststate, itvec, len, 0, attrS, isnullS))
- return gist_form_invalid_tuple(InvalidBlockNumber);
+ gistMakeUnionItVec(giststate, itvec, len, 0, attrS, isnullS);
return gistFormTuple(giststate, r, attrS, isnullS, false);
}
@@ -278,9 +274,10 @@ gistMakeUnionKey(GISTSTATE *giststate, int attno,
}
*dstisnull = FALSE;
- *dst = FunctionCall2(&giststate->unionFn[attno],
- PointerGetDatum(evec),
- PointerGetDatum(&dstsize));
+ *dst = FunctionCall2Coll(&giststate->unionFn[attno],
+ giststate->supportCollation[attno],
+ PointerGetDatum(evec),
+ PointerGetDatum(&dstsize));
}
}
@@ -289,9 +286,10 @@ gistKeyIsEQ(GISTSTATE *giststate, int attno, Datum a, Datum b)
{
bool result;
- FunctionCall3(&giststate->equalFn[attno],
- a, b,
- PointerGetDatum(&result));
+ FunctionCall3Coll(&giststate->equalFn[attno],
+ giststate->supportCollation[attno],
+ a, b,
+ PointerGetDatum(&result));
return result;
}
@@ -328,9 +326,6 @@ gistgetadjusted(Relation r, IndexTuple oldtup, IndexTuple addtup, GISTSTATE *gis
IndexTuple newtup = NULL;
int i;
- if (GistTupleIsInvalid(oldtup) || GistTupleIsInvalid(addtup))
- return gist_form_invalid_tuple(ItemPointerGetBlockNumber(&(oldtup->t_tid)));
-
gistDeCompressAtt(giststate, r, oldtup, NULL,
(OffsetNumber) 0, oldentries, oldisnull);
@@ -401,14 +396,6 @@ gistchoose(Relation r, Page p, IndexTuple it, /* it has compressed entry */
int j;
IndexTuple itup = (IndexTuple) PageGetItem(p, PageGetItemId(p, i));
- if (!GistPageIsLeaf(p) && GistTupleIsInvalid(itup))
- {
- ereport(LOG,
- (errmsg("index \"%s\" needs VACUUM or REINDEX to finish crash recovery",
- RelationGetRelationName(r))));
- continue;
- }
-
sum_grow = 0;
for (j = 0; j < r->rd_att->natts; j++)
{
@@ -460,8 +447,9 @@ gistdentryinit(GISTSTATE *giststate, int nkey, GISTENTRY *e,
gistentryinit(*e, k, r, pg, o, l);
dep = (GISTENTRY *)
- DatumGetPointer(FunctionCall1(&giststate->decompressFn[nkey],
- PointerGetDatum(e)));
+ DatumGetPointer(FunctionCall1Coll(&giststate->decompressFn[nkey],
+ giststate->supportCollation[nkey],
+ PointerGetDatum(e)));
/* decompressFn may just return the given pointer */
if (dep != e)
gistentryinit(*e, dep->key, dep->rel, dep->page, dep->offset,
@@ -486,8 +474,9 @@ gistcentryinit(GISTSTATE *giststate, int nkey,
gistentryinit(*e, k, r, pg, o, l);
cep = (GISTENTRY *)
- DatumGetPointer(FunctionCall1(&giststate->compressFn[nkey],
- PointerGetDatum(e)));
+ DatumGetPointer(FunctionCall1Coll(&giststate->compressFn[nkey],
+ giststate->supportCollation[nkey],
+ PointerGetDatum(e)));
/* compressFn may just return the given pointer */
if (cep != e)
gistentryinit(*e, cep->key, cep->rel, cep->page, cep->offset,
@@ -521,7 +510,12 @@ gistFormTuple(GISTSTATE *giststate, Relation r,
}
res = index_form_tuple(giststate->tupdesc, compatt, isnull);
- GistTupleSetValid(res);
+
+ /*
+ * The offset number on tuples on internal pages is unused. For historical
+ * reasons, it is set 0xffff.
+ */
+ ItemPointerSetOffsetNumber(&(res->t_tid), 0xffff);
return res;
}
@@ -532,16 +526,23 @@ gistpenalty(GISTSTATE *giststate, int attno,
{
float penalty = 0.0;
- if (giststate->penaltyFn[attno].fn_strict == FALSE || (isNullOrig == FALSE && isNullAdd == FALSE))
- FunctionCall3(&giststate->penaltyFn[attno],
- PointerGetDatum(orig),
- PointerGetDatum(add),
- PointerGetDatum(&penalty));
+ if (giststate->penaltyFn[attno].fn_strict == FALSE ||
+ (isNullOrig == FALSE && isNullAdd == FALSE))
+ {
+ FunctionCall3Coll(&giststate->penaltyFn[attno],
+ giststate->supportCollation[attno],
+ PointerGetDatum(orig),
+ PointerGetDatum(add),
+ PointerGetDatum(&penalty));
+ /* disallow negative or NaN penalty */
+ if (isnan(penalty) || penalty < 0.0)
+ penalty = 0.0;
+ }
else if (isNullOrig && isNullAdd)
penalty = 0.0;
else
- penalty = 1e10; /* try to prevent to mix null and non-null
- * value */
+ penalty = 1e10; /* try to prevent mixing null and non-null
+ * values */
return penalty;
}
@@ -677,3 +678,24 @@ gistoptions(PG_FUNCTION_ARGS)
PG_RETURN_BYTEA_P(result);
PG_RETURN_NULL();
}
+
+/*
+ * Temporary GiST indexes are not WAL-logged, but we need LSNs to detect
+ * concurrent page splits anyway. GetXLogRecPtrForTemp() provides a fake
+ * sequence of LSNs for that purpose. Each call generates an LSN that is
+ * greater than any previous value returned by this function in the same
+ * session.
+ */
+XLogRecPtr
+GetXLogRecPtrForTemp(void)
+{
+ static XLogRecPtr counter = {0, 1};
+
+ counter.xrecoff++;
+ if (counter.xrecoff == 0)
+ {
+ counter.xlogid++;
+ counter.xrecoff++;
+ }
+ return counter;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-10 22:01:33 +0000