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前往新版Gitcode,体验更适合开发者的 AI 搜索 >>
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0f582cee
编写于
2月 05, 1998
作者:
B
Bruce Momjian
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
char() cleanup and more cacheoff improvements.
上级
48ad446c
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
32 addition
and
11 deletion
+32
-11
src/backend/access/common/heaptuple.c
src/backend/access/common/heaptuple.c
+32
-11
未找到文件。
src/backend/access/common/heaptuple.c
浏览文件 @
0f582cee
...
...
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.3
2 1998/02/04 21:32
:08 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.3
3 1998/02/05 03:47
:08 momjian Exp $
*
* NOTES
* The old interface functions have been converted to macros
...
...
@@ -400,7 +400,7 @@ nocachegetattr(HeapTuple tup,
bool
*
isnull
)
{
char
*
tp
;
/* ptr to att in tuple */
bits8
*
bp
=
NULL
;
/* ptr to att in tuple */
bits8
*
bp
=
tup
->
t_bits
;
/* ptr to att in tuple */
int
slow
;
/* do we have to walk nulls? */
AttributeTupleForm
*
att
=
tupleDesc
->
attrs
;
...
...
@@ -452,7 +452,6 @@ nocachegetattr(HeapTuple tup,
* there's a null somewhere in the tuple
*/
bp
=
tup
->
t_bits
;
tp
=
(
char
*
)
tup
+
tup
->
t_hoff
;
slow
=
0
;
attnum
--
;
...
...
@@ -526,7 +525,11 @@ nocachegetattr(HeapTuple tup,
{
register
int
j
=
0
;
for
(
j
=
0
;
j
<
attnum
&&
!
slow
;
j
++
)
/*
* In for(), we make this <= and not < because we want to
* test if we can go past it in initializing offsets.
*/
for
(
j
=
0
;
j
<=
attnum
&&
!
slow
;
j
++
)
if
(
att
[
j
]
->
attlen
<
1
&&
!
VARLENA_FIXED_SIZE
(
att
[
j
]))
slow
=
1
;
}
...
...
@@ -556,7 +559,13 @@ nocachegetattr(HeapTuple tup,
else
off
=
att
[
j
-
1
]
->
attcacheoff
+
att
[
j
-
1
]
->
atttypmod
;
for
(;
j
<
attnum
+
1
;
j
++
)
for
(;
j
<=
attnum
||
/* Can we compute more? We will probably need them */
(
j
<
tup
->
t_natts
&&
att
[
j
]
->
attcacheoff
==
-
1
&&
(
HeapTupleNoNulls
(
tup
)
||
!
att_isnull
(
j
,
bp
))
&&
(
HeapTupleAllFixed
(
tup
)
||
att
[
j
]
->
attlen
>
0
||
VARLENA_FIXED_SIZE
(
att
[
j
])));
j
++
)
{
/*
* Fix me when going to a machine with more than a four-byte
...
...
@@ -589,13 +598,25 @@ nocachegetattr(HeapTuple tup,
att
[
j
]
->
attcacheoff
=
off
;
/* The only varlena/-1 length value to get here is this */
if
(
!
VARLENA_FIXED_SIZE
(
att
[
j
]))
off
+=
att
[
j
]
->
attlen
;
else
switch
(
att
[
j
]
->
attlen
)
{
Assert
(
att
[
j
]
->
atttypmod
==
VARSIZE
(
tp
+
off
));
off
+=
att
[
j
]
->
atttypmod
;
case
sizeof
(
char
):
off
++
;
break
;
case
sizeof
(
short
):
off
+=
sizeof
(
short
);
break
;
case
sizeof
(
int32
):
off
+=
sizeof
(
int32
);
break
;
case
-
1
:
Assert
(
!
VARLENA_FIXED_SIZE
(
att
[
j
])
||
att
[
j
]
->
atttypmod
==
VARSIZE
(
tp
+
off
));
off
+=
VARSIZE
(
tp
+
off
);
break
;
default:
off
+=
att
[
j
]
->
attlen
;
break
;
}
}
...
...
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