RFR(S): 8191229: serviceability/jvmti/GetOwnedMonitorInfo/GetOwnedMonitorInfoTest.java fails with NoClassDefFoundError

Chris Plummer chris.plummer at oracle.com
Thu Dec 7 08:11:43 UTC 2017


I could put it in Agent_Initialize(). It would be a little simpler since 
I would not need to call and error check GetEnv() again. I initially had 
done it there, but ran into the crash due to handle issues, so I moved 
it to JNI_OnLoad. But ended up having the same problem there, and it was 
due to specifying JVMTI_VERSION_1 on the GetEnv() call. I think possibly 
the dispatch table is different and it was not doing the NewGlobalRef() 
call properly. So Agent_Initialize() might work now that I'm specifying 
JVMTI_VERSION_9.

thanks,

Chris

On 12/7/17 12:02 AM, serguei.spitsyn at oracle.com wrote:
> Hi Chris,
>
> This variant is not that simple as one would expect but it looks Ok to 
> me.
>
> Thanks,
> Serguei
>
>
> On 12/6/17 23:44, Chris Plummer wrote:
>> New webrev:
>>
>> https://bugs.openjdk.java.net/browse/JDK-8191229
>> http://cr.openjdk.java.net/~cjplummer/8191229/webrev.01/
>>
>> testClass now initialized from JNI_OnLoad(), and use memset to clear 
>> callbacks. Also updated to use JVMTI_VERSION_9 when calling GetEnv().
>>
>> thanks,
>>
>> Chris
>



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