RFR (S): 8006954: GC Cause equals No GC for CMS background collection in the trace GC event

[Erik Helin]

Based on some internal feedback, I've updated the change. I've added a 
new GCCause::Cause called _cms_concurrent_mark to be used as cause for 
collect_in_background.

The new webrev can be found here:
http://cr.openjdk.java.net/~ehelin/8006954/webrev.01/

Thanks,
Erik

On 02/06/2013 06:08 PM, Erik Helin wrote:
> Hi all,
>
> this change makes sure that the "cause" field in the
> /vm/gc/collection/garbage_collection event is set for a CMS background
> collection. This is done by ensuring that the _cause field in
> GenCollectedHeap is set before registering the start of a GC event.
>
> Webrev:
> http://cr.openjdk.java.net/~ehelin/8006954/webrev.00/
>
> Bug:
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8006954
>
> Thanks,
> Erik