RFR (S): 8133530: Add JFR event for evacuation statistics

[Thomas Schatzl]

Hi Mikael,

On Fri, 2015-08-14 at 13:30 +0200, Mikael Gerdin wrote:
> Hi Thomas,
> 
> On 2015-08-13 17:43, Thomas Schatzl wrote:
> > Hi all,
> >
> >    can I have reviews for this split-out from 8073013 that adds JFR
> > support for evacuation statistics.
> >
> > The code has been changed to (hopefully) correspond better to the way
> > code that sends JFR events should look like.
> >
> > CR:
> > https://bugs.openjdk.java.net/browse/JDK-8133530
> > Webrev:
> > http://cr.openjdk.java.net/~tschatzl/8133530/webrev/
> 
> in gcTrace.hpp
> 39 #include "gc/g1/g1YCTypes.hpp"
> 40 #include "gcHeapSummary.hpp"
> 41 #endif
> 42
> 
> you should use the full path to gcHeapSummary.hpp
> 
> in gcTraceSend.cpp
> 240   if (surv_evt.should_commit()) {
> 241     surv_evt.set_gcId(GCId::peek().id());
> 242     surv_evt.set_allocated(summary.allocated() * HeapWordSize);
> 
> The other events use
> 232     e.set_gcId(_shared_gc_info.gc_id().id());
> 
> When you assert_set_gc_id you actually verify that the shared gc info id 
> is set.

  all fixed in 
http://cr.openjdk.java.net/~tschatzl/8133530/webrev.0_to_1 (diff)
http://cr.openjdk.java.net/~tschatzl/8133530/webrev.1 (full)

I also incorporated a suggestion by Erik that extracted the common
members of the two new events into a single (JFR) struct to benefit a
little from refactoring.

Thanks,
  Thomas