--- old/src/hotspot/share/gc/parallel/parallelScavengeHeap.hpp	2018-02-21 18:45:31.752773310 +0100
+++ new/src/hotspot/share/gc/parallel/parallelScavengeHeap.hpp	2018-02-21 18:45:31.556766633 +0100
@@ -34,6 +34,7 @@
 #include "gc/shared/collectorPolicy.hpp"
 #include "gc/shared/gcPolicyCounters.hpp"
 #include "gc/shared/gcWhen.hpp"
+#include "gc/shared/softRefPolicy.hpp"
 #include "gc/shared/strongRootsScope.hpp"
 #include "memory/metaspace.hpp"
 #include "utilities/growableArray.hpp"
@@ -59,6 +60,8 @@
 
   GenerationSizer* _collector_policy;
 
+  SoftRefPolicy _soft_ref_policy;
+
   // Collection of generations that are adjacent in the
   // space reserved for the heap.
   AdjoiningGenerations* _gens;
@@ -106,6 +109,8 @@
 
   virtual CollectorPolicy* collector_policy() const { return _collector_policy; }
 
+  virtual SoftRefPolicy* soft_ref_policy() { return &_soft_ref_policy; }
+
   virtual GrowableArray<GCMemoryManager*> memory_managers();
   virtual GrowableArray<MemoryPool*> memory_pools();