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Fix for possible releasebuffer bug.
This commit is contained in:
Bruce Momjian
parent
6c4982851a
commit
a753e5d192
@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/catalog/indexing.c,v 1.22 1998/08/20 22:07:36 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/catalog/indexing.c,v 1.23 1998/08/30 23:25:55 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -227,31 +227,26 @@ CatalogIndexFetchTuple(Relation heapRelation,
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{
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IndexScanDesc sd;
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RetrieveIndexResult indexRes;
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HeapTuple tuple;
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HeapTuple tuple = NULL;
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Buffer buffer;
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sd = index_beginscan(idesc, false, num_keys, skey);
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tuple = (HeapTuple) NULL;
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do
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while ((indexRes = index_getnext(sd, ForwardScanDirection)))
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{
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indexRes = index_getnext(sd, ForwardScanDirection);
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if (indexRes)
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{
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ItemPointer iptr;
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ItemPointer iptr;
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iptr = &indexRes->heap_iptr;
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tuple = heap_fetch(heapRelation, SnapshotNow, iptr, &buffer);
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pfree(indexRes);
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}
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else
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iptr = &indexRes->heap_iptr;
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tuple = heap_fetch(heapRelation, SnapshotNow, iptr, &buffer);
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pfree(indexRes);
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if (HeapTupleIsValid(tuple))
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break;
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} while (!HeapTupleIsValid(tuple));
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}
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if (HeapTupleIsValid(tuple))
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{
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tuple = heap_copytuple(tuple);
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if (BufferIsValid(buffer))
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ReleaseBuffer(buffer);
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}
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index_endscan(sd);
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pfree(sd);
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@ -333,7 +328,7 @@ ProcedureOidIndexScan(Relation heapRelation, Oid procId)
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(bits16) 0x0,
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(AttrNumber) 1,
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(RegProcedure) F_OIDEQ,
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(Datum) procId);
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ObjectIdGetDatum(procId));
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idesc = index_openr(ProcedureOidIndex);
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tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
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@ -359,7 +354,7 @@ ProcedureNameIndexScan(Relation heapRelation,
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(bits16) 0x0,
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(AttrNumber) 1,
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(RegProcedure) F_NAMEEQ,
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(Datum) procName);
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PointerGetDatum(procName));
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ScanKeyEntryInitialize(&skey[1],
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(bits16) 0x0,
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@ -371,7 +366,7 @@ ProcedureNameIndexScan(Relation heapRelation,
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(bits16) 0x0,
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(AttrNumber) 3,
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(RegProcedure) F_OID8EQ,
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(Datum) argTypes);
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PointerGetDatum(argTypes));
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idesc = index_openr(ProcedureNameIndex);
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tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 3);
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@ -394,7 +389,7 @@ ProcedureSrcIndexScan(Relation heapRelation, text *procSrc)
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(bits16) 0x0,
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(AttrNumber) 1,
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(RegProcedure) F_TEXTEQ,
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(Datum) procSrc);
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PointerGetDatum(procSrc));
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idesc = index_openr(ProcedureSrcIndex);
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tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
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@ -415,7 +410,7 @@ TypeOidIndexScan(Relation heapRelation, Oid typeId)
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(bits16) 0x0,
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(AttrNumber) 1,
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(RegProcedure) F_OIDEQ,
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(Datum) typeId);
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ObjectIdGetDatum(typeId));
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idesc = index_openr(TypeOidIndex);
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tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
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@ -436,7 +431,7 @@ TypeNameIndexScan(Relation heapRelation, char *typeName)
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(bits16) 0x0,
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(AttrNumber) 1,
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(RegProcedure) F_NAMEEQ,
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(Datum) typeName);
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PointerGetDatum(typeName));
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idesc = index_openr(TypeNameIndex);
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tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
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@ -477,7 +472,7 @@ ClassOidIndexScan(Relation heapRelation, Oid relId)
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(bits16) 0x0,
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(AttrNumber) 1,
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(RegProcedure) F_OIDEQ,
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(Datum) relId);
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ObjectIdGetDatum(relId));
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idesc = index_openr(ClassOidIndex);
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tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
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@ -1,7 +1,7 @@
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/* A lexical scanner generated by flex */
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/* Scanner skeleton version:
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* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.24 1998/08/23 22:25:51 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.25 1998/08/30 23:25:56 momjian Exp $
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*/
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#define FLEX_SCANNER
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@ -555,7 +555,7 @@ char *yytext;
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.24 1998/08/23 22:25:51 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.25 1998/08/30 23:25:56 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -1181,6 +1181,8 @@ YY_RULE_SETUP
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if (isascii((unsigned char)yytext[i]) &&
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isupper(yytext[i]))
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yytext[i] = tolower(yytext[i]);
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if (i >= NAMEDATALEN)
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yytext[NAMEDATALEN-1] = '\0';
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keyword = ScanKeywordLookup((char*)yytext);
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if (keyword != NULL) {
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@ -1195,7 +1197,7 @@ YY_RULE_SETUP
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YY_BREAK
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case 34:
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YY_RULE_SETUP
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#line 337 "scan.l"
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#line 339 "scan.l"
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{
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char* endptr;
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@ -1217,7 +1219,7 @@ YY_RULE_SETUP
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YY_BREAK
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case 35:
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YY_RULE_SETUP
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#line 355 "scan.l"
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#line 357 "scan.l"
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{
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char* endptr;
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@ -1232,7 +1234,7 @@ YY_RULE_SETUP
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YY_BREAK
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case 36:
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YY_RULE_SETUP
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#line 366 "scan.l"
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#line 368 "scan.l"
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{
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char* endptr;
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@ -1253,7 +1255,7 @@ YY_RULE_SETUP
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YY_BREAK
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case 37:
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YY_RULE_SETUP
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#line 383 "scan.l"
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#line 385 "scan.l"
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{
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char* endptr;
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@ -1267,7 +1269,7 @@ YY_RULE_SETUP
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YY_BREAK
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case 38:
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YY_RULE_SETUP
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#line 395 "scan.l"
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#line 397 "scan.l"
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{
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int i;
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ScanKeyword *keyword;
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@ -1276,6 +1278,8 @@ YY_RULE_SETUP
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if (isascii((unsigned char)yytext[i]) &&
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isupper(yytext[i]))
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yytext[i] = tolower(yytext[i]);
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if (i >= NAMEDATALEN)
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yytext[NAMEDATALEN-1] = '\0';
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keyword = ScanKeywordLookup((char*)yytext);
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if (keyword != NULL) {
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@ -1290,20 +1294,20 @@ YY_RULE_SETUP
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YY_BREAK
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case 39:
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YY_RULE_SETUP
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#line 414 "scan.l"
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#line 418 "scan.l"
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{ /* ignore */ }
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YY_BREAK
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case 40:
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YY_RULE_SETUP
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#line 416 "scan.l"
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#line 420 "scan.l"
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{ return (yytext[0]); }
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YY_BREAK
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case 41:
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YY_RULE_SETUP
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#line 418 "scan.l"
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#line 422 "scan.l"
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ECHO;
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YY_BREAK
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#line 1307 "lex.yy.c"
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#line 1311 "lex.yy.c"
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case YY_STATE_EOF(INITIAL):
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case YY_STATE_EOF(xb):
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case YY_STATE_EOF(xc):
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@ -2189,7 +2193,7 @@ int main()
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return 0;
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}
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#endif
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#line 418 "scan.l"
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#line 422 "scan.l"
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void yyerror(char message[])
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