src/share/vm/gc_implementation/g1/heapRegion.cpp

rev 9033 : 8223691: Add JFR G1 Region Type Change Event Support

@@ -35,10 +35,11 @@
 #include "memory/genOopClosures.inline.hpp"
 #include "memory/iterator.hpp"
 #include "memory/space.inline.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/orderAccess.inline.hpp"
+#include "gc_implementation/g1/heapRegionTracer.hpp"
 
 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
 
 int    HeapRegion::LogOfHRGrainBytes = 0;
 int    HeapRegion::LogOfHRGrainWords = 0;

@@ -209,17 +210,43 @@
   double region_elapsed_time_ms =
     g1p->predict_region_elapsed_time_ms(this, false /* for_young_gc */);
   _gc_efficiency = (double) reclaimable_bytes() / region_elapsed_time_ms;
 }
 
+void HeapRegion::set_free() {
+  report_region_type_change(G1HeapRegionTraceType::Free);
+  _type.set_free();
+}
+
+void HeapRegion::set_eden() {
+  report_region_type_change(G1HeapRegionTraceType::Eden);
+  _type.set_eden();
+}
+
+void HeapRegion::set_eden_pre_gc() {
+  report_region_type_change(G1HeapRegionTraceType::Eden);
+  _type.set_eden_pre_gc();
+}
+
+void HeapRegion::set_survivor() {
+  report_region_type_change(G1HeapRegionTraceType::Survivor);
+  _type.set_survivor();
+}
+
+void HeapRegion::set_old() {
+  report_region_type_change(G1HeapRegionTraceType::Old);
+  _type.set_old();
+}
+
 void HeapRegion::set_startsHumongous(HeapWord* new_top, HeapWord* new_end) {
   assert(!isHumongous(), "sanity / pre-condition");
   assert(end() == _orig_end,
          "Should be normal before the humongous object allocation");
   assert(top() == bottom(), "should be empty");
   assert(bottom() <= new_top && new_top <= new_end, "pre-condition");
 
+  report_region_type_change(G1HeapRegionTraceType::StartsHumongous);
   _type.set_starts_humongous();
   _humongous_start_region = this;
 
   set_end(new_end);
   _offsets.set_for_starts_humongous(new_top);

@@ -230,10 +257,11 @@
   assert(end() == _orig_end,
          "Should be normal before the humongous object allocation");
   assert(top() == bottom(), "should be empty");
   assert(first_hr->startsHumongous(), "pre-condition");
 
+  report_region_type_change(G1HeapRegionTraceType::ContinuesHumongous);
   _type.set_continues_humongous();
   _humongous_start_region = first_hr;
 }
 
 void HeapRegion::clear_humongous() {

@@ -301,10 +329,18 @@
   hr_clear(false /*par*/, false /*clear_space*/);
   set_top(bottom());
   record_timestamp();
 }
 
+void HeapRegion::report_region_type_change(G1HeapRegionTraceType::Type to) {
+  HeapRegionTracer::send_region_type_change(_hrm_index,
+                                            get_trace_type(),
+                                            to,
+                                            (uintptr_t)bottom(),
+                                            used());
+}
+
 CompactibleSpace* HeapRegion::next_compaction_space() const {
   return G1CollectedHeap::heap()->next_compaction_region(this);
 }
 
 void HeapRegion::note_self_forwarding_removal_start(bool during_initial_mark,