1/*
2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import org.testng.annotations.Test;
25import org.testng.Assert;
26
27import jdk.test.lib.process.OutputAnalyzer;
28import jdk.test.lib.dcmd.CommandExecutor;
29import jdk.test.lib.dcmd.JMXExecutor;
30
31import java.text.NumberFormat;
32import java.text.ParseException;
33
34/*
35 * @test
36 * @summary Test of diagnostic command VM.uptime
37 * @library /test/lib
38 * @modules java.base/jdk.internal.misc
39 *          java.compiler
40 *          java.management
41 *          jdk.internal.jvmstat/sun.jvmstat.monitor
42 * @run testng UptimeTest
43 */
44public class UptimeTest {
45    public void run(CommandExecutor executor) {
46        double someUptime = 1.0;
47        long startTime = System.currentTimeMillis();
48        try {
49            synchronized (this) {
50                /* Loop to guard against spurious wake ups */
51                while (System.currentTimeMillis() < (startTime + someUptime * 1000)) {
52                    wait((int) someUptime * 1000);
53                }
54            }
55        } catch (InterruptedException e) {
56            Assert.fail("Test error: Exception caught when sleeping:", e);
57        }
58
59        OutputAnalyzer output = executor.execute("VM.uptime");
60
61        output.stderrShouldBeEmpty();
62
63        /*
64         * Output should be:
65         * [pid]:
66         * xx.yyy s
67         *
68         * If there is only one line in output there is no "[pid]:" printout;
69         * skip first line, split on whitespace and grab first half
70         */
71        int index = output.asLines().size() == 1 ? 0 : 1;
72        String uptimeString = output.asLines().get(index).split("\\s+")[0];
73
74        try {
75            double uptime = NumberFormat.getNumberInstance().parse(uptimeString).doubleValue();
76            if (uptime < someUptime) {
77                Assert.fail(String.format(
78                        "Test failure: Uptime was less than intended sleep time: %.3f s < %.3f s",
79                        uptime, someUptime));
80            }
81        } catch (ParseException e) {
82            Assert.fail("Test failure: Could not parse uptime string: " +
83                    uptimeString, e);
84        }
85    }
86
87    @Test
88    public void jmx() {
89        run(new JMXExecutor());
90    }
91}
92