--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/management/HotspotRuntimeMBean/GetTotalSafepointTime.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2003, 2015, 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     4858522
+ * @summary Basic unit test of HotspotRuntimeMBean.getTotalSafepointTime()
+ *
+ * @run main/othervm -XX:+UsePerfData GetTotalSafepointTime
+ */
+
+/*
+ * This test is just a sanity check and does not check for the correct value.
+ */
+
+import sun.management.*;
+
+public class GetTotalSafepointTime {
+
+    private static HotspotRuntimeMBean mbean =
+        (HotspotRuntimeMBean)ManagementFactoryHelper.getHotspotRuntimeMBean();
+
+    private static final long NUM_THREAD_DUMPS = 100;
+
+    // Careful with these values.
+    private static final long MIN_VALUE_FOR_PASS = 1;
+    private static final long MAX_VALUE_FOR_PASS = Long.MAX_VALUE;
+
+    private static boolean trace = false;
+
+    public static void main(String args[]) throws Exception {
+        if (args.length > 0 && args[0].equals("trace")) {
+            trace = true;
+        }
+
+        // Thread.getAllStackTraces() should cause safepoints.
+        // If this test is failing because it doesn't,
+        // MIN_VALUE_FOR_PASS should be reset to 0
+        for (int i = 0; i < NUM_THREAD_DUMPS; i++) {
+             Thread.getAllStackTraces();
+        }
+
+        long value = mbean.getTotalSafepointTime();
+
+        if (trace) {
+            System.out.println("Total safepoint time (ms): " + value);
+        }
+
+        if (value < MIN_VALUE_FOR_PASS || value > MAX_VALUE_FOR_PASS) {
+            throw new RuntimeException("Total safepoint time " +
+                                       "illegal value: " + value + " ms " +
+                                       "(MIN = " + MIN_VALUE_FOR_PASS + "; " +
+                                       "MAX = " + MAX_VALUE_FOR_PASS + ")");
+        }
+
+        for (int i = 0; i < 2 * NUM_THREAD_DUMPS; i++) {
+             Thread.getAllStackTraces();
+        }
+        long value2 = mbean.getTotalSafepointTime();
+
+        if (trace) {
+            System.out.println("Total safepoint time2 (ms): " + value2);
+        }
+
+        if (value2 <= value) {
+            throw new RuntimeException("Total safepoint time " +
+                                       "did not increase " +
+                                       "(value = " + value + "; " +
+                                       "value2 = " + value2 + ")");
+        }
+
+        System.out.println("Test passed.");
+    }
+}