--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/UniquePathUtilities.java	2017-02-15 17:08:06.498478854 -0800
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2016, 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.
+ */
+package org.graalvm.compiler.options;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicLong;
+
+public class UniquePathUtilities {
+
+    private static final AtomicLong globalTimeStamp = new AtomicLong();
+    /**
+     * This generates a per thread persistent id to aid mapping related dump files with each other.
+     */
+    private static final ThreadLocal<Integer> threadDumpId = new ThreadLocal<>();
+    private static final AtomicInteger dumpId = new AtomicInteger();
+
+    private static int getThreadDumpId() {
+        Integer id = threadDumpId.get();
+        if (id == null) {
+            id = dumpId.incrementAndGet();
+            threadDumpId.set(id);
+        }
+        return id;
+    }
+
+    private static String formatExtension(String ext) {
+        if (ext == null || ext.length() == 0) {
+            return "";
+        }
+        return "." + ext;
+    }
+
+    public static long getGlobalTimeStamp() {
+        if (globalTimeStamp.get() == 0) {
+            globalTimeStamp.compareAndSet(0, System.currentTimeMillis());
+        }
+        return globalTimeStamp.get();
+    }
+
+    /**
+     * Generate a {@link Path} using the format "%s-%d_%d%s" with the {@link OptionValue#getValue()
+     * base filename}, a {@link #globalTimeStamp global timestamp}, {@link #getThreadDumpId a per
+     * thread unique id} and an optional {@code extension}.
+     *
+     * @return the output file path or null if the flag is null
+     */
+    public static Path getPath(OptionValue<String> option, OptionValue<String> defaultDirectory, String extension) {
+        return getPath(option, defaultDirectory, extension, true);
+    }
+
+    /**
+     * Generate a {@link Path} using the format "%s-%d_%s" with the {@link OptionValue#getValue()
+     * base filename}, a {@link #globalTimeStamp global timestamp} and an optional {@code extension}
+     * .
+     *
+     * @return the output file path or null if the flag is null
+     */
+    public static Path getPathGlobal(OptionValue<String> option, OptionValue<String> defaultDirectory, String extension) {
+        return getPath(option, defaultDirectory, extension, false);
+    }
+
+    private static Path getPath(OptionValue<String> option, OptionValue<String> defaultDirectory, String extension, boolean includeThreadId) {
+        if (option.getValue() == null) {
+            return null;
+        }
+        final String name = includeThreadId
+                        ? String.format("%s-%d_%d%s", option.getValue(), getGlobalTimeStamp(), getThreadDumpId(), formatExtension(extension))
+                        : String.format("%s-%d%s", option.getValue(), getGlobalTimeStamp(), formatExtension(extension));
+        Path result = Paths.get(name);
+        if (result.isAbsolute() || defaultDirectory == null) {
+            return result;
+        }
+        return Paths.get(defaultDirectory.getValue(), name);
+    }
+
+}