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rev 58105 : [mq]: 8236073-softmaxheapsize

@@ -43,19 +43,22 @@
   // Ratio check data for determining if heap growth is necessary.
   uint _ratio_over_threshold_count;
   double _ratio_over_threshold_sum;
   uint _pauses_since_start;
   G1HeapSizingPolicy(const G1CollectedHeap* g1h, const G1Analytics* analytics);
   // If an expansion would be appropriate, because recent GC overhead had
   // exceeded the desired limit, return an amount to expand by.
-  virtual size_t expansion_amount();
+  size_t expansion_amount_after_young_collection();
+  size_t shrink_amount_at_last_mixed_gc(size_t desired_bytes_after_concurrent_mark);
+  // Calculate the target capacity based on used bytes and free ratio
+  size_t target_heap_capacity(size_t used_bytes, uintx free_ratio) const;
   // Clear ratio tracking data used by expansion_amount().
   void clear_ratio_check_data();
   static G1HeapSizingPolicy* create(const G1CollectedHeap* g1h, const G1Analytics* analytics);
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