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2bce7f19
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2bce7f19
编写于
7月 09, 2010
作者:
M
malenkov
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
6963811: Deadlock-prone locking changes in Introspector
Reviewed-by: peterz, rupashka
上级
f5058113
变更
9
隐藏空白更改
内联
并排
Showing
9 changed file
with
289 addition
and
61 deletion
+289
-61
src/share/classes/com/sun/beans/finder/InstanceFinder.java
src/share/classes/com/sun/beans/finder/InstanceFinder.java
+3
-5
src/share/classes/com/sun/beans/finder/PersistenceDelegateFinder.java
...asses/com/sun/beans/finder/PersistenceDelegateFinder.java
+12
-7
src/share/classes/com/sun/beans/finder/PropertyEditorFinder.java
...re/classes/com/sun/beans/finder/PropertyEditorFinder.java
+9
-3
src/share/classes/java/beans/Encoder.java
src/share/classes/java/beans/Encoder.java
+3
-10
src/share/classes/java/beans/Introspector.java
src/share/classes/java/beans/Introspector.java
+12
-19
src/share/classes/java/beans/PropertyEditorManager.java
src/share/classes/java/beans/PropertyEditorManager.java
+5
-17
test/java/beans/Introspector/Test6963811.java
test/java/beans/Introspector/Test6963811.java
+78
-0
test/java/beans/PropertyEditor/Test6963811.java
test/java/beans/PropertyEditor/Test6963811.java
+83
-0
test/java/beans/XMLEncoder/Test6963811.java
test/java/beans/XMLEncoder/Test6963811.java
+84
-0
未找到文件。
src/share/classes/com/sun/beans/finder/InstanceFinder.java
浏览文件 @
2bce7f19
/*
* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2009,
2010,
Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
...
...
@@ -39,7 +39,7 @@ class InstanceFinder<T> {
private
final
Class
<?
extends
T
>
type
;
private
final
boolean
allow
;
private
final
String
suffix
;
private
String
[]
packages
;
private
volatile
String
[]
packages
;
InstanceFinder
(
Class
<?
extends
T
>
type
,
boolean
allow
,
String
suffix
,
String
...
packages
)
{
this
.
type
=
type
;
...
...
@@ -49,9 +49,7 @@ class InstanceFinder<T> {
}
public
String
[]
getPackages
()
{
return
(
this
.
packages
.
length
>
0
)
?
this
.
packages
.
clone
()
:
this
.
packages
;
return
this
.
packages
.
clone
();
}
public
void
setPackages
(
String
...
packages
)
{
...
...
src/share/classes/com/sun/beans/finder/PersistenceDelegateFinder.java
浏览文件 @
2bce7f19
/*
* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2009,
2010,
Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
...
...
@@ -47,17 +47,22 @@ public final class PersistenceDelegateFinder
}
public
void
register
(
Class
<?>
type
,
PersistenceDelegate
delegate
)
{
if
(
delegate
!=
null
)
{
this
.
registry
.
put
(
type
,
delegate
);
}
else
{
this
.
registry
.
remove
(
type
);
synchronized
(
this
.
registry
)
{
if
(
delegate
!=
null
)
{
this
.
registry
.
put
(
type
,
delegate
);
}
else
{
this
.
registry
.
remove
(
type
);
}
}
}
@Override
public
PersistenceDelegate
find
(
Class
<?>
type
)
{
PersistenceDelegate
delegate
=
this
.
registry
.
get
(
type
);
PersistenceDelegate
delegate
;
synchronized
(
this
.
registry
)
{
delegate
=
this
.
registry
.
get
(
type
);
}
return
(
delegate
!=
null
)
?
delegate
:
super
.
find
(
type
);
}
}
src/share/classes/com/sun/beans/finder/PropertyEditorFinder.java
浏览文件 @
2bce7f19
/*
* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2009,
2010,
Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
...
...
@@ -64,12 +64,18 @@ public final class PropertyEditorFinder
}
public
void
register
(
Class
<?>
type
,
Class
<?>
editor
)
{
this
.
registry
.
put
(
type
,
editor
);
synchronized
(
this
.
registry
)
{
this
.
registry
.
put
(
type
,
editor
);
}
}
@Override
public
PropertyEditor
find
(
Class
<?>
type
)
{
PropertyEditor
editor
=
instantiate
(
this
.
registry
.
get
(
type
),
null
);
Class
<?>
predefined
;
synchronized
(
this
.
registry
)
{
predefined
=
this
.
registry
.
get
(
type
);
}
PropertyEditor
editor
=
instantiate
(
predefined
,
null
);
if
(
editor
==
null
)
{
editor
=
super
.
find
(
type
);
if
((
editor
==
null
)
&&
(
null
!=
type
.
getEnumConstants
()))
{
...
...
src/share/classes/java/beans/Encoder.java
浏览文件 @
2bce7f19
...
...
@@ -194,13 +194,8 @@ public class Encoder {
* @see java.beans.BeanInfo#getBeanDescriptor
*/
public
PersistenceDelegate
getPersistenceDelegate
(
Class
<?>
type
)
{
synchronized
(
this
.
finder
)
{
PersistenceDelegate
pd
=
this
.
finder
.
find
(
type
);
if
(
pd
!=
null
)
{
return
pd
;
}
}
return
MetaData
.
getPersistenceDelegate
(
type
);
PersistenceDelegate
pd
=
this
.
finder
.
find
(
type
);
return
(
pd
!=
null
)
?
pd
:
MetaData
.
getPersistenceDelegate
(
type
);
}
/**
...
...
@@ -214,9 +209,7 @@ public class Encoder {
* @see java.beans.BeanInfo#getBeanDescriptor
*/
public
void
setPersistenceDelegate
(
Class
<?>
type
,
PersistenceDelegate
delegate
)
{
synchronized
(
this
.
finder
)
{
this
.
finder
.
register
(
type
,
delegate
);
}
this
.
finder
.
register
(
type
,
delegate
);
}
/**
...
...
src/share/classes/java/beans/Introspector.java
浏览文件 @
2bce7f19
...
...
@@ -158,21 +158,23 @@ public class Introspector {
if
(!
ReflectUtil
.
isPackageAccessible
(
beanClass
))
{
return
(
new
Introspector
(
beanClass
,
null
,
USE_ALL_BEANINFO
)).
getBeanInfo
();
}
Map
<
Class
<?>,
BeanInfo
>
beanInfoCache
;
BeanInfo
beanInfo
;
synchronized
(
BEANINFO_CACHE
)
{
Map
<
Class
<?>,
BeanInfo
>
beanInfoCache
=
(
Map
<
Class
<?>,
BeanInfo
>)
AppContext
.
getAppContext
().
get
(
BEANINFO_CACHE
);
beanInfoCache
=
(
Map
<
Class
<?>,
BeanInfo
>)
AppContext
.
getAppContext
().
get
(
BEANINFO_CACHE
);
if
(
beanInfoCache
==
null
)
{
beanInfoCache
=
new
WeakHashMap
<
Class
<?>,
BeanInfo
>();
AppContext
.
getAppContext
().
put
(
BEANINFO_CACHE
,
beanInfoCache
);
}
BeanInfo
beanInfo
=
beanInfoCache
.
get
(
beanClass
);
if
(
beanInfo
==
null
)
{
beanInfo
=
(
new
Introspector
(
beanClass
,
null
,
USE_ALL_BEANINFO
)).
getBeanInfo
();
beanInfo
=
beanInfoCache
.
get
(
beanClass
);
}
if
(
beanInfo
==
null
)
{
beanInfo
=
new
Introspector
(
beanClass
,
null
,
USE_ALL_BEANINFO
).
getBeanInfo
();
synchronized
(
BEANINFO_CACHE
)
{
beanInfoCache
.
put
(
beanClass
,
beanInfo
);
}
return
beanInfo
;
}
return
beanInfo
;
}
/**
...
...
@@ -302,10 +304,7 @@ public class Introspector {
*/
public
static
String
[]
getBeanInfoSearchPath
()
{
BeanInfoFinder
finder
=
getFinder
();
synchronized
(
finder
)
{
return
finder
.
getPackages
();
}
return
getFinder
().
getPackages
();
}
/**
...
...
@@ -329,10 +328,7 @@ public class Introspector {
if
(
sm
!=
null
)
{
sm
.
checkPropertiesAccess
();
}
BeanInfoFinder
finder
=
getFinder
();
synchronized
(
finder
)
{
finder
.
setPackages
(
path
);
}
getFinder
().
setPackages
(
path
);
}
...
...
@@ -454,10 +450,7 @@ public class Introspector {
* @return Instance of an explicit BeanInfo class or null if one isn't found.
*/
private
static
BeanInfo
findExplicitBeanInfo
(
Class
beanClass
)
{
BeanInfoFinder
finder
=
getFinder
();
synchronized
(
finder
)
{
return
finder
.
find
(
beanClass
);
}
return
getFinder
().
find
(
beanClass
);
}
/**
...
...
src/share/classes/java/beans/PropertyEditorManager.java
浏览文件 @
2bce7f19
/*
* Copyright (c) 1996, 20
09
, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 20
10
, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
...
...
@@ -81,10 +81,7 @@ public class PropertyEditorManager {
if
(
sm
!=
null
)
{
sm
.
checkPropertiesAccess
();
}
PropertyEditorFinder
finder
=
getFinder
();
synchronized
(
finder
)
{
finder
.
register
(
targetType
,
editorClass
);
}
getFinder
().
register
(
targetType
,
editorClass
);
}
/**
...
...
@@ -95,10 +92,7 @@ public class PropertyEditorManager {
* The result is null if no suitable editor can be found.
*/
public
static
PropertyEditor
findEditor
(
Class
<?>
targetType
)
{
PropertyEditorFinder
finder
=
getFinder
();
synchronized
(
finder
)
{
return
finder
.
find
(
targetType
);
}
return
getFinder
().
find
(
targetType
);
}
/**
...
...
@@ -110,10 +104,7 @@ public class PropertyEditorManager {
* e.g. Sun implementation initially sets to {"sun.beans.editors"}.
*/
public
static
String
[]
getEditorSearchPath
()
{
PropertyEditorFinder
finder
=
getFinder
();
synchronized
(
finder
)
{
return
finder
.
getPackages
();
}
return
getFinder
().
getPackages
();
}
/**
...
...
@@ -134,10 +125,7 @@ public class PropertyEditorManager {
if
(
sm
!=
null
)
{
sm
.
checkPropertiesAccess
();
}
PropertyEditorFinder
finder
=
getFinder
();
synchronized
(
finder
)
{
finder
.
setPackages
(
path
);
}
getFinder
().
setPackages
(
path
);
}
private
static
PropertyEditorFinder
getFinder
()
{
...
...
test/java/beans/Introspector/Test6963811.java
0 → 100644
浏览文件 @
2bce7f19
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6963811
* @summary Tests deadlock in Introspector
* @author Sergey Malenkov
*/
import
java.beans.Introspector
;
import
java.beans.SimpleBeanInfo
;
public
class
Test6963811
implements
Runnable
{
private
final
long
time
;
private
final
boolean
sync
;
public
Test6963811
(
long
time
,
boolean
sync
)
{
this
.
time
=
time
;
this
.
sync
=
sync
;
}
public
void
run
()
{
try
{
Thread
.
sleep
(
this
.
time
);
// increase the chance of the deadlock
Introspector
.
getBeanInfo
(
this
.
sync
?
Super
.
class
:
Sub
.
class
,
this
.
sync
?
null
:
Object
.
class
);
}
catch
(
Exception
exception
)
{
exception
.
printStackTrace
();
}
}
public
static
void
main
(
String
[]
args
)
throws
Exception
{
Thread
[]
threads
=
new
Thread
[
2
];
for
(
int
i
=
0
;
i
<
threads
.
length
;
i
++)
{
threads
[
i
]
=
new
Thread
(
new
Test6963811
(
0L
,
i
>
0
));
threads
[
i
].
start
();
Thread
.
sleep
(
500L
);
// increase the chance of the deadlock
}
for
(
Thread
thread
:
threads
)
{
thread
.
join
();
}
}
public
static
class
Super
{
}
public
static
class
Sub
extends
Super
{
}
public
static
class
SubBeanInfo
extends
SimpleBeanInfo
{
public
SubBeanInfo
()
{
new
Test6963811
(
1000L
,
true
).
run
();
}
}
}
test/java/beans/PropertyEditor/Test6963811.java
0 → 100644
浏览文件 @
2bce7f19
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6963811
* @summary Tests deadlock in PropertyEditorManager
* @author Sergey Malenkov
*/
import
java.beans.PropertyEditorManager
;
import
sun.beans.editors.StringEditor
;
public
class
Test6963811
implements
Runnable
{
private
final
long
time
;
private
final
boolean
sync
;
public
Test6963811
(
long
time
,
boolean
sync
)
{
this
.
time
=
time
;
this
.
sync
=
sync
;
}
public
void
run
()
{
try
{
Thread
.
sleep
(
this
.
time
);
// increase the chance of the deadlock
if
(
this
.
sync
)
{
synchronized
(
Test6963811
.
class
)
{
PropertyEditorManager
.
findEditor
(
Super
.
class
);
}
}
else
{
PropertyEditorManager
.
findEditor
(
Sub
.
class
);
}
}
catch
(
Exception
exception
)
{
exception
.
printStackTrace
();
}
}
public
static
void
main
(
String
[]
args
)
throws
Exception
{
Thread
[]
threads
=
new
Thread
[
2
];
for
(
int
i
=
0
;
i
<
threads
.
length
;
i
++)
{
threads
[
i
]
=
new
Thread
(
new
Test6963811
(
0L
,
i
>
0
));
threads
[
i
].
start
();
Thread
.
sleep
(
500L
);
// increase the chance of the deadlock
}
for
(
Thread
thread
:
threads
)
{
thread
.
join
();
}
}
public
static
class
Super
{
}
public
static
class
Sub
extends
Super
{
}
public
static
class
SubEditor
extends
StringEditor
{
public
SubEditor
()
{
new
Test6963811
(
1000L
,
true
).
run
();
}
}
}
test/java/beans/XMLEncoder/Test6963811.java
0 → 100644
浏览文件 @
2bce7f19
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6963811
* @summary Tests deadlock in Encoder
* @author Sergey Malenkov
*/
import
java.beans.Encoder
;
import
java.beans.DefaultPersistenceDelegate
;
public
class
Test6963811
implements
Runnable
{
private
static
final
Encoder
ENCODER
=
new
Encoder
();
private
final
long
time
;
private
final
boolean
sync
;
public
Test6963811
(
long
time
,
boolean
sync
)
{
this
.
time
=
time
;
this
.
sync
=
sync
;
}
public
void
run
()
{
try
{
Thread
.
sleep
(
this
.
time
);
// increase the chance of the deadlock
if
(
this
.
sync
)
{
synchronized
(
Test6963811
.
class
)
{
ENCODER
.
getPersistenceDelegate
(
Super
.
class
);
}
}
else
{
ENCODER
.
getPersistenceDelegate
(
Sub
.
class
);
}
}
catch
(
Exception
exception
)
{
exception
.
printStackTrace
();
}
}
public
static
void
main
(
String
[]
args
)
throws
Exception
{
Thread
[]
threads
=
new
Thread
[
2
];
for
(
int
i
=
0
;
i
<
threads
.
length
;
i
++)
{
threads
[
i
]
=
new
Thread
(
new
Test6963811
(
0L
,
i
>
0
));
threads
[
i
].
start
();
Thread
.
sleep
(
500L
);
// increase the chance of the deadlock
}
for
(
Thread
thread
:
threads
)
{
thread
.
join
();
}
}
public
static
class
Super
{
}
public
static
class
Sub
extends
Super
{
}
public
static
class
SubPersistenceDelegate
extends
DefaultPersistenceDelegate
{
public
SubPersistenceDelegate
()
{
new
Test6963811
(
1000L
,
true
).
run
();
}
}
}
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