Collect thread dumps of all Java process on localhost

[Keimpe Bronkhorst]

Mandy,

Thanks, I got it to work using your suggestions.

Keimpe Bronkhorst
Oracle JDeveloper


On 11/4/2015 5:02 PM, Mandy Chung wrote:
>> On Nov 4, 2015, at 2:32 PM, Keimpe Bronkhorst <keimpe.bronkhorst at oracle.com> wrote:
>>
>> This concerns code we have in Oracle JDeveloper which collect thread dumps of all Java Processes on local host. This code uses the non-public JDK classes:
>>      import sun.jvmstat.monitor.MonitorException;
>>      import sun.jvmstat.monitor.MonitoredHost;
>>      import sun.jvmstat.monitor.MonitoredVm;
>>      import sun.jvmstat.monitor.MonitoredVmUtil;
>>      import sun.jvmstat.monitor.VmIdentifier;
>>
>> to identify the Java processes on local host, and
>>
>>      import com.sun.tools.attach.VirtualMachine;
>>      import sun.tools.attach.HotSpotVirtualMachine;
>>
>> to attach to the processes and dump their threads.
>>
>> The trouble is that these classes are not accessible anymore in JDK9 unless -XaddExports: is used.
>>
>> Does anybody know how to do this functionality using public classes, or are there plans to add public classes to replace these non-public classes?
>
> com.sun.tools.attach is supported API that you should use to list the VM processes on a local host:
>     http://download.java.net/jdk9/docs/jdk/api/attach/spec/index.html
>
> I guess you are calling HotSpotVirtualMachine.remoteDataDump method to get thread dump.  Can you use java.lang.management.ThreadMXBean.dumpAllThreads once you start a local JMX agent in the attached VM?
>
> Mandy