<i18n dev> testcase failure java/util/Locale/Bug6989440.java

[David Holmes]

So the jtreg uncaughtException code is doing a join() on the target 
Thread while holding the monitor lock of the ThreadGroup - ouch! Where 
do we file jtreg bugs?

David

On 11/10/2011 1:44 AM, Chris Hegarty wrote:
> On 10/10/2011 15:52, Alan Bateman wrote:
>> Chris Hegarty wrote:
>>> Naoto,
>>>
>>> Forgot to add, you can probably just push the changes for the test
>>> along with your source changes. I modified it a little since last
>>> review. Reproduces one in about every ten times on one of our Dual
>>> core Linux x64 boxes.
>> Is it the CME that duplicates for you? I'm still wondering about the
>> original failure mode which was a timeout, presumably a looping thread
>> or deadlock or something else.
>
> This duplicates CME and deadlock. The deadlock would appear to happen
> because jtreg tries to cleanup the thread that throws the CME, uncaught
> exception. Look for 0xea769858 below.
>
> "Thread-7" prio=10 tid=0x0a026c00 nid=0x3c30 in Object.wait() [0xd00fe000]
> java.lang.Thread.State: TIMED_WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> - waiting on <0xea769858> (a java.lang.Thread)
> at java.lang.Thread.join(Thread.java:1266)
> - locked <0xea769858> (a java.lang.Thread)
> at
> com.sun.javatest.regtest.MainAction$SameVMThreadGroup.cleanup(MainAction.java:760)
>
> at
> com.sun.javatest.regtest.MainAction$SameVMThreadGroup.uncaughtException(MainAction.java:727)
>
> - locked <0xea766988> (a
> com.sun.javatest.regtest.MainAction$SameVMThreadGroup)
> at java.lang.Thread.dispatchUncaughtException(Thread.java:1964)
>
> "Thread-6" prio=10 tid=0x0a022000 nid=0x3c2f waiting for monitor entry
> [0xd0256000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at java.lang.ThreadGroup.threadTerminated(ThreadGroup.java:942)
> - waiting to lock <0xea766988> (a
> com.sun.javatest.regtest.MainAction$SameVMThreadGroup)
> at java.lang.Thread.exit(Thread.java:732)
>
> "SameVMThread" prio=10 tid=0xd058a000 nid=0x3c2e waiting for monitor
> entry [0xd02a6000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at java.lang.ThreadGroup.add(ThreadGroup.java:885)
> - waiting to lock <0xea766988> (a
> com.sun.javatest.regtest.MainAction$SameVMThreadGroup)
> at java.lang.Thread.start(Thread.java:687)
> - locked <0xea790160> (a Bug6989440$TestThread)
> at Bug6989440.main(Bug6989440.java:47)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>
> at java.lang.reflect.Method.invoke(Method.java:601)
> at
> com.sun.javatest.regtest.MainAction$SameVMRunnable.run(MainAction.java:680)
> at java.lang.Thread.run(Thread.java:722)
> .....
>
>
> -Chris.
>
>>
>> -Alan.