--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/7158800/InternTest.java	Wed Jun 13 19:52:59 2012 -0400
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2012, 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.
+ */
+
+/*
+ * @test
+ * @bug 7158800
+ * @run shell/timeout=400 Test7158800.sh
+ * @summary This test performs poorly if alternate hashing isn't used for
+ * string table.
+ * The timeout is handled by the shell file (which kills the process)
+ */
+import java.util.*;
+import java.io.*;
+
+public class InternTest {
+    public static void main (String args[]) throws Exception {
+        final String badStringsFilename = "badstrings.txt";
+
+        if (args.length == 0 || (!args[0].equals("bad") && !args[0].equals("normal"))) {
+            System.out.println("Usage:  java InternTest [normal|bad]");
+            System.exit(1);
+        }
+
+        FileInputStream fstream = new FileInputStream(badStringsFilename);
+        DataInputStream in = new DataInputStream(fstream);
+        BufferedReader br = new BufferedReader(new InputStreamReader(in));
+        String toIntern, toDiscard;
+        int count = 0;
+        long current = 0L;
+        long last = System.currentTimeMillis();
+
+        if (args[0].equals("bad")) {
+            while ((toIntern = br.readLine()) != null) {
+                toDiscard = new String((new Integer((int)(Math.random() * Integer.MAX_VALUE))).toString());
+                toIntern.intern();
+                count++;
+                if (count % 10000 == 0 && count != 0) {
+                    current = System.currentTimeMillis();
+                    System.out.println(new Date(current) + ": interned " + count + " 0-hash strings - last 10000 took " + ((float)(current - last))/1000 + "s (" + ((float)(current - last))/10000000 + "s per String)");
+                    last = current;
+                }
+            }
+        }
+        if (args[0].equals("normal")) {
+            while ((toDiscard = br.readLine()) != null) { // do the same read from the file to try and make the test fair
+                toIntern = new String((new Integer((int)(Math.random() * Integer.MAX_VALUE))).toString());
+                toIntern.intern();
+                count++;
+                if (count % 10000 == 0 && count != 0) {
+                    current = System.currentTimeMillis();
+                    System.out.println(new Date(current) + ": interned " + count + " normal strings - last 10000 took " + ((float)(current - last))/1000 + "s (" + ((float)(current - last))/10000000 + "s per String)");
+                    last = current;
+                }
+            }
+        }
+        in.close();
+    }
+}
+
+