src/hotspot/share/gc/g1/g1CollectedHeap.hpp

rev 47676 : imported patch 8149127-rename-concurrentrefine-b
rev 47677 : [mq]: 8149127-rename-concurrentrefine-b-stefanj-review
rev 47678 : imported patch 8140255-move-sampling-thread

@@ -71,10 +71,11 @@
 class G1CollectionSet;
 class G1CollectorPolicy;
 class G1Policy;
 class G1HotCardCache;
 class G1RemSet;
+class G1YoungRemSetSamplingThread;
 class HeapRegionRemSetIterator;
 class G1ConcurrentMark;
 class ConcurrentMarkThread;
 class G1ConcurrentRefine;
 class GenerationCounters;

@@ -140,10 +141,12 @@
 
   // Testing classes.
   friend class G1CheckCSetFastTableClosure;
 
 private:
+  G1YoungRemSetSamplingThread* _young_gen_sampling_thread;
+
   WorkGang* _workers;
   G1CollectorPolicy* _collector_policy;
 
   static size_t _humongous_object_threshold_in_words;
 

@@ -551,10 +554,12 @@
 
   // Merges the information gathered on a per-thread basis for all worker threads
   // during GC into global variables.
   void merge_per_thread_state_info(G1ParScanThreadStateSet* per_thread_states);
 public:
+  G1YoungRemSetSamplingThread* sampling_thread() const { return _young_gen_sampling_thread; }
+
   WorkGang* workers() const { return _workers; }
 
   G1Allocator* allocator() {
     return _allocator;
   }

@@ -957,10 +962,11 @@
   // May not return if something goes wrong.
   G1CollectedHeap(G1CollectorPolicy* policy);
 
 private:
   jint initialize_concurrent_refinement();
+  jint initialize_young_gen_sampling_thread();
 public:
   // Initialize the G1CollectedHeap to have the initial and
   // maximum sizes and remembered and barrier sets
   // specified by the policy object.
   jint initialize();