--- /dev/null	2019-02-13 16:01:02.292000000 +0300
+++ new/src/share/vm/jfr/recorder/checkpoint/types/jfrTypeSet.hpp	2019-02-15 19:03:15.573502569 +0300
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2016, 2018, 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_JFR_RECORDER_CHECKPOINT_TYPES_JFRTYPESET_HPP
+#define SHARE_VM_JFR_RECORDER_CHECKPOINT_TYPES_JFRTYPESET_HPP
+
+#include "jfr/utilities/jfrAllocation.hpp"
+
+class ClassLoaderData;
+class JfrArtifactClosure;
+class JfrArtifactSet;
+class JfrCheckpointWriter;
+class Klass;
+
+// XXX class PackageEntry;
+
+class JfrTypeSet : AllStatic {
+  friend class CLDCallback;
+  friend class JfrTypeManager;
+  friend class TypeSetSerialization;
+ private:
+  static JfrArtifactSet* _artifacts;
+  static JfrArtifactClosure* _subsystem_callback;
+  static bool _class_unload;
+
+  static void do_klass(Klass* k);
+  static void do_unloaded_klass(Klass* k);
+  static void do_klasses();
+
+  // XXX
+  // static void do_package(PackageEntry* entry);
+  // static void do_unloaded_package(PackageEntry* entry);
+  // static void do_packages();
+
+  static void do_class_loader_data(ClassLoaderData* cld);
+  static void do_unloaded_class_loader_data(ClassLoaderData* cld);
+  static void do_class_loaders();
+
+  static void write_klass_constants(JfrCheckpointWriter* writer, JfrCheckpointWriter* leakp_writer);
+// XXX  static void write_package_constants(JfrCheckpointWriter* writer, JfrCheckpointWriter* leakp_writer);
+  static void write_class_loader_constants(JfrCheckpointWriter* writer, JfrCheckpointWriter* leakp_writer);
+  static void write_method_constants(JfrCheckpointWriter* writer, JfrCheckpointWriter* leakp_writer);
+  static void write_symbol_constants(JfrCheckpointWriter* writer, JfrCheckpointWriter* leakp_writer);
+  static void serialize(JfrCheckpointWriter* writer, JfrCheckpointWriter* leakp_writer, bool class_unload);
+};
+
+#endif // SHARE_VM_JFR_RECORDER_CHECKPOINT_TYPES_JFRTYPESET_HPP