--- /dev/null	2019-09-03 08:57:28.780066420 -0700
+++ new/src/hotspot/share/include/cds.h	2019-10-03 11:39:49.958015081 -0700
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 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_INCLUDE_CDS_H
+#define SHARE_INCLUDE_CDS_H
+
+// This file declares the CDS data structures that are used by the HotSpot Serviceability Agent
+// (see C sources inside src/jdk.hotspot.agent).
+//
+// We should use only standard C types. Do not use custom types such as bool, intx,
+// etc, to avoid introducing unnecessary dependencies to other HotSpot type declarations.
+//
+// Also, this is a C header file. Do not use C++ here.
+
+#define NUM_CDS_REGIONS 9
+#define CDS_ARCHIVE_MAGIC 0xf00baba2
+#define CURRENT_CDS_ARCHIVE_VERSION 4
+#define INVALID_CDS_ARCHIVE_VERSION -1
+
+struct CDSFileMapRegion {
+  int        _crc;           // crc checksum of the current space
+  size_t     _file_offset;   // sizeof(this) rounded to vm page size
+  union {
+    char*    _base;          // copy-on-write base address
+    size_t   _offset;        // offset from the compressed oop encoding base, only used
+                             // by archive heap space
+  } _addr;
+  size_t     _used;          // for setting space top on read
+  int        _read_only;     // read only space?
+  int        _allow_exec;    // executable code in space?
+};
+
+struct CDSFileMapHeaderBase {
+  unsigned int _magic;           // identify file type
+  int          _crc;             // header crc checksum
+  int          _version;         // must be CURRENT_CDS_ARCHIVE_VERSION
+  struct CDSFileMapRegion _space[NUM_CDS_REGIONS];
+};
+
+typedef struct CDSFileMapHeaderBase CDSFileMapHeaderBase;
+
+#endif // SHARE_INCLUDE_CDS_H