--- old/src/hotspot/share/gc/shared/genCollectedHeap.hpp	2018-02-21 18:45:35.112887766 +0100
+++ new/src/hotspot/share/gc/shared/genCollectedHeap.hpp	2018-02-21 18:45:34.924881362 +0100
@@ -29,6 +29,7 @@
 #include "gc/shared/collectedHeap.hpp"
 #include "gc/shared/collectorPolicy.hpp"
 #include "gc/shared/generation.hpp"
+#include "gc/shared/softRefGenPolicy.hpp"
 
 class StrongRootsScope;
 class SubTasksDone;
@@ -70,6 +71,8 @@
   // The generational collector policy.
   GenCollectorPolicy* _gen_policy;
 
+  SoftRefGenPolicy _soft_ref_gen_policy;
+
   // Indicates that the most recent previous incremental collection failed.
   // The flag is cleared when an action is taken that might clear the
   // condition that caused that incremental collection to fail.
@@ -166,6 +169,8 @@
 
   virtual CollectorPolicy* collector_policy() const { return gen_policy(); }
 
+  virtual SoftRefPolicy* soft_ref_policy() { return &_soft_ref_gen_policy; }
+
   // Adaptive size policy
   virtual AdaptiveSizePolicy* size_policy() {
     return gen_policy()->size_policy();