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dragonwell8_jdk
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fe80fea6
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dragonwell8_jdk
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体验新版 GitCode,发现更多精彩内容 >>
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fe80fea6
编写于
3月 09, 2009
作者:
D
dfuchs
浏览文件
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电子邮件补丁
差异文件
6691246: Thread context class loader can be set using JMX remote ClientNotifForwarded
Reviewed-by: emcmanus
上级
498d2fd6
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
80 addition
and
18 deletion
+80
-18
src/share/classes/com/sun/jmx/remote/internal/ClientNotifForwarder.java
...ses/com/sun/jmx/remote/internal/ClientNotifForwarder.java
+80
-18
未找到文件。
src/share/classes/com/sun/jmx/remote/internal/ClientNotifForwarder.java
浏览文件 @
fe80fea6
...
...
@@ -22,7 +22,6 @@
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package
com.sun.jmx.remote.internal
;
import
java.io.IOException
;
...
...
@@ -34,6 +33,7 @@ import java.util.List;
import
java.util.Map
;
import
java.util.concurrent.Executor
;
import
java.security.AccessControlContext
;
import
java.security.AccessController
;
import
java.security.PrivilegedAction
;
import
javax.security.auth.Subject
;
...
...
@@ -54,6 +54,9 @@ import com.sun.jmx.remote.util.EnvHelp;
public
abstract
class
ClientNotifForwarder
{
private
final
AccessControlContext
acc
;
public
ClientNotifForwarder
(
Map
env
)
{
this
(
null
,
env
);
}
...
...
@@ -87,6 +90,8 @@ public abstract class ClientNotifForwarder {
this
.
command
=
command
;
if
(
thread
==
null
)
{
thread
=
new
Thread
()
{
@Override
public
void
run
()
{
while
(
true
)
{
Runnable
r
;
...
...
@@ -130,6 +135,7 @@ public abstract class ClientNotifForwarder {
this
.
defaultClassLoader
=
defaultClassLoader
;
this
.
executor
=
ex
;
this
.
acc
=
AccessController
.
getContext
();
}
/**
...
...
@@ -390,28 +396,85 @@ public abstract class ClientNotifForwarder {
setState
(
TERMINATED
);
}
// -------------------------------------------------
// private classes
// -------------------------------------------------
// -------------------------------------------------
// private classes
// -------------------------------------------------
//
private
class
NotifFetcher
implements
Runnable
{
private
volatile
boolean
alreadyLogged
=
false
;
private
void
logOnce
(
String
msg
,
SecurityException
x
)
{
if
(
alreadyLogged
)
return
;
// Log only once.
logger
.
config
(
"setContextClassLoader"
,
msg
);
if
(
x
!=
null
)
logger
.
fine
(
"setContextClassLoader"
,
x
);
alreadyLogged
=
true
;
}
// Set new context class loader, returns previous one.
private
final
ClassLoader
setContextClassLoader
(
final
ClassLoader
loader
)
{
final
AccessControlContext
ctxt
=
ClientNotifForwarder
.
this
.
acc
;
// if ctxt is null, log a config message and throw a
// SecurityException.
if
(
ctxt
==
null
)
{
logOnce
(
"AccessControlContext must not be null."
,
null
);
throw
new
SecurityException
(
"AccessControlContext must not be null"
);
}
return
AccessController
.
doPrivileged
(
new
PrivilegedAction
<
ClassLoader
>()
{
public
ClassLoader
run
()
{
try
{
// get context class loader - may throw
// SecurityException - though unlikely.
final
ClassLoader
previous
=
Thread
.
currentThread
().
getContextClassLoader
();
// if nothing needs to be done, break here...
if
(
loader
==
previous
)
return
previous
;
// reset context class loader - may throw
// SecurityException
Thread
.
currentThread
().
setContextClassLoader
(
loader
);
return
previous
;
}
catch
(
SecurityException
x
)
{
logOnce
(
"Permission to set ContextClassLoader missing. "
+
"Notifications will not be dispatched. "
+
"Please check your Java policy configuration: "
+
x
,
x
);
throw
x
;
}
}
},
ctxt
);
}
public
void
run
()
{
final
ClassLoader
previous
;
if
(
defaultClassLoader
!=
null
)
{
previous
=
setContextClassLoader
(
defaultClassLoader
);
}
else
{
previous
=
null
;
}
try
{
doRun
();
}
finally
{
if
(
defaultClassLoader
!=
null
)
{
setContextClassLoader
(
previous
);
}
}
}
private
void
doRun
()
{
synchronized
(
ClientNotifForwarder
.
this
)
{
currentFetchThread
=
Thread
.
currentThread
();
if
(
state
==
STARTING
)
if
(
state
==
STARTING
)
{
setState
(
STARTED
);
}
}
if
(
defaultClassLoader
!=
null
)
{
AccessController
.
doPrivileged
(
new
PrivilegedAction
<
Void
>()
{
public
Void
run
()
{
Thread
.
currentThread
().
setContextClassLoader
(
defaultClassLoader
);
return
null
;
}
});
}
NotificationResult
nr
=
null
;
if
(!
shouldStop
()
&&
(
nr
=
fetchNotifs
())
!=
null
)
{
...
...
@@ -444,8 +507,9 @@ public abstract class ClientNotifForwarder {
// check if an mbean unregistration notif
if
(!
listenerID
.
equals
(
mbeanRemovedNotifID
))
{
final
ClientListenerInfo
li
=
infoList
.
get
(
listenerID
);
if
(
li
!=
null
)
listeners
.
put
(
listenerID
,
li
);
if
(
li
!=
null
)
{
listeners
.
put
(
listenerID
,
li
);
}
continue
;
}
final
Notification
notif
=
tn
.
getNotification
();
...
...
@@ -786,9 +850,7 @@ public abstract class ClientNotifForwarder {
private
long
clientSequenceNumber
=
-
1
;
private
final
int
maxNotifications
;
private
final
long
timeout
;
private
Integer
mbeanRemovedNotifID
=
null
;
private
Thread
currentFetchThread
;
// state
...
...
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