[xmlblaster] dead lock

["Xavier Roques" <xRoques at infovista.com>]

Hi,

I'm using Xmlblaster 1.6.

I restarted, some connected clients and unfortunately one of my client
never connects back :(

Even if I restart several times this client, it never successes to
connect.

That's why I dumped the threads' stack on the server side and I found
the following dead lock (see below)

Is there a way to avoid it ?

Thanks,

Xavier.


"XmlBlaster.ssl_socket.SSL.tcpListener-alouettebench17-agent":
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchManager.getConnectionStatusListener
s(DispatchManager.java:206)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	- waiting to lock
<0xdb74d9c0> (a org.xmlBlaster.util.dispatch.DispatchManager)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchManager.toAlive(DispatchManager.jav
a:293)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	- locked <0xdb7a0930> (a
java.lang.Object)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnectionsHandler.updateState(Disp
atchConnectionsHandler.java:332)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	- locked <0xdb7a0f28> (a
java.util.ArrayList)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnectionsHandler.toAlive(Dispatch
ConnectionsHandler.java:302)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnection.handleTransition(Dispatc
hConnection.java:575)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	- locked <0xdb7b2838> (a
org.xmlBlaster.engine.dispatch.CbDispatchConnection)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnection.initialize(DispatchConne
ction.java:132)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnectionsHandler.initialize(Dispa
tchConnectionsHandler.java:179)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	- locked <0xdb7a0f28> (a
java.util.ArrayList)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchManager.updateProperty(DispatchMana
ger.java:160)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.authentication.SessionInfo.updateConnectQos(SessionInfo.j
ava:513)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.authentication.Authenticate.connect(Authenticate.java:276
)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.authentication.AuthenticateProtector.connect(Authenticate
Protector.java:74)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.authentication.AuthenticateProtector.connect(Authenticate
Protector.java:62)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.protocol.socket.HandleClient.handleMessage(HandleClient.j
ava:266)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.protocol.socket.HandleClient$1.run(HandleClient.java:379)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker
.runTask(ThreadPoolExecutor.java:665)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker
.run(ThreadPoolExecutor.java:690)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
java.lang.Thread.run(Thread.java:619)
INFO   | jvm 1    | 2007/09/25 11:31:29 | "XmlBlaster.PingTimer":
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnectionsHandler.shutdown(Dispatc
hConnectionsHandler.java:486)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	- waiting to lock
<0xdb7a0f28> (a java.util.ArrayList)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchManager.shutdown(DispatchManager.ja
va:954)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	- locked <0xdb74d9c0> (a
org.xmlBlaster.util.dispatch.DispatchManager)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchManager.givingUpDelivery(DispatchMa
nager.java:364)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchManager.toDead(DispatchManager.java
:356)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnectionsHandler.updateState(Disp
atchConnectionsHandler.java:348)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnectionsHandler.toDead(DispatchC
onnectionsHandler.java:315)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnection.handleTransition(Dispatc
hConnection.java:632)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnection.ping(DispatchConnection.
java:359)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.dispatch.DispatchConnection.timeout(DispatchConnecti
on.java:423)
INFO   | jvm 1    | 2007/09/25 11:31:29 | 	at
org.xmlBlaster.util.Timeout.run(Timeout.java:189)