src/share/vm/gc/g1/g1CollectionSet.hpp

@@ -55,10 +55,13 @@
   // the incrementally built collection set at the start of an evacuation
   // pause, and incremented in finalize_old_part() when adding old regions
   // (if any) to the collection set.
   size_t _bytes_used_before;
 
+  // The sum of live bytes in the collection set, set as described above.
+  size_t _bytes_live_before;
+
   size_t _recorded_rs_lengths;
 
   // The associated information that is maintained while the incremental
   // collection set is being built with young regions. Used to populate
   // the recorded info for the evacuation pause.

@@ -79,10 +82,13 @@
   // The number of bytes in the incrementally built collection set.
   // Used to set _collection_set_bytes_used_before at the start of
   // an evacuation pause.
   size_t _inc_bytes_used_before;
 
+  // The number of live bytes in the incrementally built collection set.
+  size_t _inc_bytes_live_before;
+
   // The RSet lengths recorded for regions in the CSet. It is updated
   // by the thread that adds a new region to the CSet. We assume that
   // only one thread can be allocating a new CSet region (currently,
   // it does so after taking the Heap_lock) hence no need to
   // synchronize updates to this field.

@@ -171,10 +177,14 @@
 
   void reset_bytes_used_before() {
     _bytes_used_before = 0;
   }
 
+  void reset_bytes_live_before() {
+    _bytes_live_before = 0;
+  }
+
   // Choose a new collection set.  Marks the chosen regions as being
   // "in_collection_set", and links them together.  The head and number of
   // the collection set are available via access methods.
   double finalize_young_part(double target_pause_time_ms);
   void finalize_old_part(double time_remaining_ms);