--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/memory/dynamicArchive.hpp	Fri May 17 08:29:55 2019 -0700
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2019, 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_MEMORY_DYNAMICARCHIVE_HPP
+#define SHARE_VM_MEMORY_DYNAMICARCHIVE_HPP
+
+#if INCLUDE_CDS
+
+#include "classfile/compactHashtable.hpp"
+#include "memory/allocation.hpp"
+#include "memory/filemap.hpp"
+#include "memory/memRegion.hpp"
+#include "memory/virtualspace.hpp"
+#include "oops/oop.hpp"
+#include "utilities/exceptions.hpp"
+#include "utilities/macros.hpp"
+#include "utilities/resourceHash.hpp"
+
+// We want to include all archive header information in the dynamic archive.
+// This helps simplify the process if the base layer archive is missing at
+// dynamic archiving time.
+struct DynamicArchiveHeader : public FileMapHeader {
+  // crc for the base archive header and regions
+  int _base_archive_crc[MetaspaceShared::n_regions+1];
+};
+
+class DynamicArchive : AllStatic {
+  static class DynamicArchiveBuilder* _builder;
+  static address original_to_target_impl(address orig_obj);
+  static address original_to_buffer_impl(address orig_obj);
+  static address buffer_to_target_impl(address buff_obj);
+
+public:
+  static void dump();
+
+  // obj is a copy of a MetaspaceObj, stored in the dumping buffer.
+  //
+  // The return value is the runtime targeted location of this object as
+  // mapped from the dynamic archive.
+  template <typename T> static T buffer_to_target(T buff_obj) {
+    return (T)buffer_to_target_impl(address(buff_obj));
+  }
+
+  // obj is an original MetaspaceObj used by the JVM (e.g., a valid Symbol* in the
+  // SymbolTable).
+  //
+  // The return value is the runtime targeted location of this object as
+  // mapped from the dynamic archive.
+  template <typename T> static T original_to_target(T obj) {
+    return (T)original_to_target_impl(address(obj));
+  }
+
+  // obj is an original MetaspaceObj use by the JVM (e.g., a valid Symbol* in the
+  // SymbolTable).
+  //
+  // The return value is the location of this object in the dump time
+  // buffer space
+  template <typename T> static T original_to_buffer(T obj) {
+    return (T)original_to_buffer_impl(address(obj));
+  }
+
+  // Delta of this object from SharedBaseAddress
+  static uintx object_delta_uintx(void* buff_obj);
+
+  // Does obj point to an address inside the runtime target space of the dynamic
+  // archive?
+  static bool is_in_target_space(void *obj);
+
+  static address map();
+  static bool is_mapped();
+  static bool validate(FileMapInfo* dynamic_info);
+  static void disable();
+private:
+  static address map_impl(FileMapInfo* mapinfo);
+  static void map_failed(FileMapInfo* mapinfo);
+};
+#endif // INCLUDE_CDS
+#endif // SHARE_VM_MEMORY_DYNAMICARCHIVE_HPP