--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/appcds/test-classes/MultiProcClass.java	Mon Jul 29 10:34:20 2019 -0400
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2015, 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.
+ *
+ */
+
+import sun.hotspot.WhiteBox;
+
+// This class should be loaded from a shared archive.
+public class MultiProcClass {
+    private static String instanceLabel;
+
+    public static void main(String args[]) throws Exception {
+        instanceLabel = args[0];
+        String checkPmap = args[1];
+
+        long pid = ProcessHandle.current().pid();
+        System.out.println(inst("========================== Starting MultiProcClass"));
+        System.out.println(inst("My PID: " + pid ));
+        System.out.println(inst("checkPmap = <" + checkPmap + ">" ));
+
+        if ("true".equals(checkPmap)) {
+            if (runPmap(pid, true) != 0)
+                System.out.println("MultiProcClass: Pmap failed");
+        }
+
+        WhiteBox wb = WhiteBox.getWhiteBox();
+        if (!wb.isSharedClass(MultiProcClass.class)) {
+            throw new RuntimeException(inst("MultiProcClass should be shared but is not."));
+        }
+
+        System.out.println(inst("========================== Leaving MultiProcClass"));
+    }
+
+    // A convenience method to append process instance label
+    private static String inst(String msg) {
+        return "process-" + instanceLabel + " : " + msg;
+    }
+
+    // Use on Linux-only; requires jdk-9 for Process.pid()
+    public static int runPmap(long pid, boolean inheritIO) throws Exception {
+        ProcessBuilder pmapPb = new ProcessBuilder("pmap", "" + pid);
+        if (inheritIO)
+            pmapPb.inheritIO();
+
+        return pmapPb.start().waitFor();
+    }
+}