--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/com/sun/management/OperatingSystemMXBean/GetProcessCpuTime.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2003-2004 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug     4858522
+ * @summary Basic unit test of OperatingSystemMXBean.getProcessCpuTime()
+ * @author  Steve Bohne
+ */
+
+/*
+ * This test is just a sanity check and does not check for the correct
+ * value.  The correct value should be checked manually:
+ * Solaris/Linux:
+ *   1. In a shell, enter the command: "ps -ef"
+ *   2. The value (reported in seconds) is in the "TIME" column for the process
+ * Windows NT/XP/2000:
+ *   1. Hit Ctrl-Alt-Delete, select Task Manager, select Processes tab
+ *   2. The value (reported in seconds) is in the "CPU Time" column for the
+ *      process.  You may have to add this column via View menu-> Select
+ *      Columns... item.
+ * Windows 98/ME:
+ *   Not supported.
+ */
+
+import com.sun.management.OperatingSystemMXBean;
+import java.lang.management.*;
+
+public class GetProcessCpuTime {
+
+    private static OperatingSystemMXBean mbean =
+        (com.sun.management.OperatingSystemMXBean)
+        ManagementFactory.getOperatingSystemMXBean();
+
+
+    // Careful with these values.
+    private static final long MIN_TIME_FOR_PASS = 1;
+    private static final long MAX_TIME_FOR_PASS = Long.MAX_VALUE;
+
+    // No max time.
+
+    private static boolean trace = false;
+
+    public static void main(String args[]) throws Exception {
+        if (args.length > 0 && args[0].equals("trace")) {
+            trace = true;
+        }
+
+        // Consume cpu time
+        double sum=0;
+        for (int i=0; i <=2000000; i++) {
+          sum += i;
+          sum /= i;
+        }
+
+        long ns = mbean.getProcessCpuTime();
+        if (ns == -1) {
+            System.out.println("getProcessCpuTime() is not supported");
+            return;
+        }
+
+        if (trace) {
+            System.out.println("Process CPU time in ns: " + ns);
+        }
+
+        if (ns < MIN_TIME_FOR_PASS || ns > MAX_TIME_FOR_PASS) {
+            throw new RuntimeException("Process CPU time " +
+                                       "illegal value: " + ns + " ns " +
+                                       "(MIN = " + MIN_TIME_FOR_PASS + "; " +
+                                       "MAX = " + MAX_TIME_FOR_PASS + ")");
+        }
+
+        System.out.println("Test passed.");
+    }
+}