JEP 167

Staffan Larsen staffan.larsen at oracle.com
Fri May 16 07:12:32 UTC 2014


JEP 167 is done and should be in the completed state. I’ll see if I can get that updated. The relevant bug (with change set information) is: https://bugs.openjdk.java.net/browse/JDK-8005849.

For seeing what instrumentation has been added, take a look at src/share/vm/trace/trace.xml which lists all instrumentation points. To enable trace output in OpenJDK, run with -XX:+EnableTracing (although running Java Flight Recorder [1] from Java Mission Control [2] provides a much better user experience).

Regarding the broken links, it looks like the http://opengrok.neojava.org is no longer what it used to be. In general, page you refer to has not been updated for several years...

Thanks,
/Staffan

[1] http://docs.oracle.com/javase/8/docs/technotes/guides/jfr/
[2] http://docs.oracle.com/javase/8/docs/technotes/guides/jmc/



On 16 maj 2014, at 08:55, Mario Torre <neugens at redhat.com> wrote:

> Hi all!
> 
> What's the state of JEP 167?
> 
> http://openjdk.java.net/jeps/167
> 
> I was trying to understand what kind of events have been added and how I
> can retrieve them from the outside world, but documentation seems to be
> quite lacking and it's difficult to find everything.
> 
> I'm also interested in adding some instrumentation code myself, so I
> would like to avoid duplication.
> 
> On a side, but related, note, I was trying to find more information
> here:
> 
> http://openjdk.java.net/groups/hotspot/docs/Serviceability.html
> 
> I see all the links in the document should point to actual classes,
> instead they point to some hosting website that ask me to register...
> 
> Cheers,
> Mario
> 
> 



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