RFR (S): 8015972: Refactor the sending of the object count after GC event

[Erik Helin]

All,

based on internal feedback, I've updated the change, please see new
webrev at:

http://cr.openjdk.java.net/~ehelin/8015972/webrev.01/

The changes from webrev.00 are:
- Using the typedef GCId instead of jlong
- Remove the #include "utilities/macro.hpp" from
  objectCountEventSender.hpp
- Use public inheritance from AllStatic
- Sort includes in objectCountEventSender.hpp
- Remove the "should_commit" check from ObjectCountEventSender::send,
  add an assert instead
- Use >= instead of > in ObjectCountEventSenderClosure::should_send_event
- Remove the "is_alive" variable from ObjectCountFilter::do_object_b

Thanks,
Erik

On 2013-06-05, Erik Helin wrote:
> Hi all,
> 
> this small change refactors the way the object count after GC trace
> event is sent.
> 
> Webrev:
> http://cr.openjdk.java.net/~ehelin/8015972/webrev.00/
> 
> Bug:
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8015972
> 
> Testing:
> JPRT
> 
> Thanks,
> Erik