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

@@ -24,15 +24,17 @@
 
 #include "precompiled.hpp"
 #include "code/nmethod.hpp"
 #include "gc/g1/g1BlockOffsetTable.inline.hpp"
 #include "gc/g1/g1CollectedHeap.inline.hpp"
+#include "gc/g1/g1HeapRegionTraceType.hpp"
 #include "gc/g1/g1OopClosures.inline.hpp"
 #include "gc/g1/heapRegion.inline.hpp"
 #include "gc/g1/heapRegionBounds.inline.hpp"
 #include "gc/g1/heapRegionManager.inline.hpp"
 #include "gc/g1/heapRegionRemSet.hpp"
+#include "gc/g1/heapRegionTracer.hpp"
 #include "gc/shared/genOopClosures.inline.hpp"
 #include "gc/shared/liveRange.hpp"
 #include "gc/shared/space.inline.hpp"
 #include "logging/log.hpp"
 #include "memory/iterator.hpp"

@@ -214,10 +216,11 @@
 
 void HeapRegion::set_starts_humongous(HeapWord* obj_top, size_t fill_size) {
   assert(!is_humongous(), "sanity / pre-condition");
   assert(top() == bottom(), "should be empty");
 
+  report_region_type_change(G1HeapRegionTraceType::StartsHumongous);
   _type.set_starts_humongous();
   _humongous_start_region = this;
 
   _bot_part.set_for_starts_humongous(obj_top, fill_size);
 }

@@ -225,10 +228,11 @@
 void HeapRegion::set_continues_humongous(HeapRegion* first_hr) {
   assert(!is_humongous(), "sanity / pre-condition");
   assert(top() == bottom(), "should be empty");
   assert(first_hr->is_starts_humongous(), "pre-condition");
 
+  report_region_type_change(G1HeapRegionTraceType::ContinuesHumongous);
   _type.set_continues_humongous();
   _humongous_start_region = first_hr;
 }
 
 void HeapRegion::clear_humongous() {

@@ -270,10 +274,19 @@
   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(),
+                                            (uint)allocation_context());
+}
+
 CompactibleSpace* HeapRegion::next_compaction_space() const {
   return G1CollectedHeap::heap()->next_compaction_region(this);
 }
 
 void HeapRegion::note_self_forwarding_removal_start(bool during_initial_mark,