8236073: G1: Use SoftMaxHeapSize to guide GC heuristics

@@ -146,10 +146,11 @@
   double _cur_derived_pointer_table_update_time_ms;
 
   double _cur_clear_ct_time_ms;
   double _cur_expand_heap_time_ms;
   double _cur_ref_proc_time_ms;
+  double _cur_adjust_heap_time_ms;
 
   double _cur_collection_start_sec;
   double _root_region_scan_wait_time_ms;
 
   double _external_accounted_time_ms;

@@ -262,10 +263,14 @@
 
   void record_expand_heap_time(double ms) {
     _cur_expand_heap_time_ms = ms;
   }
 
+  void record_or_add_adjust_heap_time(double ms) {
+    _cur_adjust_heap_time_ms += ms;
+  }
+
   void record_initial_evac_time(double ms) {
     _cur_collection_initial_evac_time_ms = ms;
   }
 
   void record_or_add_optional_evac_time(double ms) {

@@ -401,10 +406,14 @@
 
   double cur_expand_heap_time_ms() {
     return _cur_expand_heap_time_ms;
   }
 
+  double cur_adjust_heap_time_ms() {
+    return _cur_adjust_heap_time_ms;
+  }
+
   double root_region_scan_wait_time_ms() {
     return _root_region_scan_wait_time_ms;
   }
 
   double young_cset_choice_time_ms() {