--- /dev/null	2018-01-12 12:14:44.065206906 +0100
+++ new/src/hotspot/share/gc/shared/softRefGenPolicy.hpp	2018-02-21 18:45:36.048919651 +0100
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_GC_SHARED_SOFTREFGENPOLICY_HPP
+#define SHARE_VM_GC_SHARED_SOFTREFGENPOLICY_HPP
+
+#include "gc/shared/softRefPolicy.hpp"
+#include "utilities/globalDefinitions.hpp"
+
+class AdaptiveSizePolicy;
+
+class SoftRefGenPolicy : public SoftRefPolicy {
+ private:
+  AdaptiveSizePolicy* _size_policy;
+
+public:
+  SoftRefGenPolicy() : _size_policy(NULL) {}
+
+  void set_size_policy(AdaptiveSizePolicy* size_policy) {
+    _size_policy = size_policy;
+  }
+
+  virtual void cleared_all_soft_refs();
+};
+
+#endif // SHARE_VM_GC_SHARED_SOFTREFGENPOLICY_HPP