1 /*
   2  * Copyright (c) 2005, 2014, 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 
  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  * @bug 6260070
  33  * @summary Unit test for jstack utility
  34  * @library /lib/testlibrary
  35  * @run main BasicJStackTest
  36  */
  37 public class BasicJStackTest {
  38 
  39     private static ProcessBuilder processBuilder = new ProcessBuilder();
  40 
  41     public static void main(String[] args) throws Exception {
  42         testJstackNoArgs();
  43         testJstack_l();
  44     }
  45 
  46     private static void testJstackNoArgs() throws Exception {
  47         OutputAnalyzer output = jstack();
  48         output.shouldHaveExitValue(0);
  49     }
  50 
  51     private static void testJstack_l() throws Exception {
  52         OutputAnalyzer output = jstack("-l");
  53         output.shouldHaveExitValue(0);
  54     }
  55 
  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(Integer.toString(ProcessTools.getProcessId()));
  65 
  66         processBuilder.command(launcher.getCommand());
  67         System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
  68         OutputAnalyzer output = new OutputAnalyzer(processBuilder.start());
  69         System.out.println(output.getOutput());
  70 
  71         return output;
  72     }
  73 
  74 }