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体验新版 GitCode,发现更多精彩内容 >>
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4dded12f
编写于
11月 27, 1999
作者:
T
Tom Lane
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电子邮件补丁
差异文件
COPY to a relation should keep write lock till transaction commit.
Thanks to Hiroshi for spotting the problem.
上级
37432f5a
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
15 addition
and
8 deletion
+15
-8
src/backend/commands/copy.c
src/backend/commands/copy.c
+15
-8
未找到文件。
src/backend/commands/copy.c
浏览文件 @
4dded12f
...
...
@@ -6,7 +6,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.9
1 1999/11/22 17:56:00 momjian
Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.9
2 1999/11/27 21:52:53 tgl
Exp $
*
*-------------------------------------------------------------------------
*/
...
...
@@ -257,14 +257,16 @@ DoCopy(char *relname, bool binary, bool oids, bool from, bool pipe,
Relation
rel
;
extern
char
*
UserName
;
/* defined in global.c */
const
AclMode
required_access
=
from
?
ACL_WR
:
ACL_RD
;
LOCKMODE
required_lock
=
from
?
AccessExclusiveLock
:
AccessShareLock
;
/* Note: AccessExclusive is probably overkill for copying to a relation,
* but that's what the existing code grabs on the rel's indices. If
* this is relaxed then I think the index locks need relaxed also.
*/
int
result
;
rel
=
heap_openr
(
relname
,
required_lock
);
/*
* Open and lock the relation, using the appropriate lock type.
*
* Note: AccessExclusive is probably overkill for copying to a relation,
* but that's what the code grabs on the rel's indices. If this lock is
* relaxed then I think the index locks need relaxed also.
*/
rel
=
heap_openr
(
relname
,
(
from
?
AccessExclusiveLock
:
AccessShareLock
));
result
=
pg_aclcheck
(
relname
,
UserName
,
required_access
);
if
(
result
!=
ACLCHECK_OK
)
...
...
@@ -349,7 +351,12 @@ DoCopy(char *relname, bool binary, bool oids, bool from, bool pipe,
}
}
heap_close
(
rel
,
required_lock
);
/*
* Close the relation. If reading, we can release the AccessShareLock
* we got; if writing, we should hold the lock until end of transaction
* to ensure that updates will be committed before lock is released.
*/
heap_close
(
rel
,
(
from
?
NoLock
:
AccessShareLock
));
}
...
...
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