1 /*
2  * Copyright (c) 2005, 2015, 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
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22  */
23 
24 import java.util.Arrays;
25 
26 import jdk.testlibrary.JDKToolLauncher;
27 import jdk.testlibrary.OutputAnalyzer;
28 import jdk.testlibrary.ProcessTools;
29 
30 /*
31  * @test
32  * @summary Unit test for jstack utility
33  * @library /lib/testlibrary
34  * @build jdk.testlibrary.*
35  * @run main BasicJStackTest
36  */
37 public class BasicJStackTest {
38 
39     private static ProcessBuilder processBuilder = new ProcessBuilder();
40 
main(String[] args)41     public static void main(String[] args) throws Exception {
42         testJstackNoArgs();
43         testJstack_l();
44     }
45 
testJstackNoArgs()46     private static void testJstackNoArgs() throws Exception {
47         OutputAnalyzer output = jstack();
48         output.shouldHaveExitValue(0);
49     }
50 
testJstack_l()51     private static void testJstack_l() throws Exception {
52         OutputAnalyzer output = jstack("-l");
53         output.shouldHaveExitValue(0);
54     }
55 
jstack(String... toolArgs)56     private static OutputAnalyzer jstack(String... toolArgs) throws Exception {
57         JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack");
58         launcher.addVMArg("-XX:+UsePerfData");
59         if (toolArgs != null) {
60             for (String toolArg : toolArgs) {
61                 launcher.addToolArg(toolArg);
62             }
63         }
64         launcher.addToolArg(Long.toString(ProcessTools.getProcessId()));
65 
66         processBuilder.command(launcher.getCommand());
67         System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
68         OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
69         System.out.println(output.getOutput());
70 
71         return output;
72     }
73 
74 }
75