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
  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  * @modules java.management
  36  * @build jdk.testlibrary.*
  37  * @run main BasicJStackTest
  38  */
  39 public class BasicJStackTest {
  40 
  41     private static ProcessBuilder processBuilder = new ProcessBuilder();
  42 
  43     public static void main(String[] args) throws Exception {
  44         testJstackNoArgs();
  45         testJstack_l();
  46     }
  47 
  48     private static void testJstackNoArgs() throws Exception {
  49         OutputAnalyzer output = jstack();
  50         output.shouldHaveExitValue(0);
  51     }
  52 
  53     private static void testJstack_l() throws Exception {
  54         OutputAnalyzer output = jstack("-l");
  55         output.shouldHaveExitValue(0);
  56     }
  57 
  58     private static OutputAnalyzer jstack(String... toolArgs) throws Exception {
  59         JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack");
  60         launcher.addVMArg("-XX:+UsePerfData");
  61         if (toolArgs != null) {
  62             for (String toolArg : toolArgs) {
  63                 launcher.addToolArg(toolArg);
  64             }
  65         }
  66         launcher.addToolArg(Integer.toString(ProcessTools.getProcessId()));
  67 
  68         processBuilder.command(launcher.getCommand());
  69         System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
  70         OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
  71         System.out.println(output.getOutput());
  72 
  73         return output;
  74     }
  75 
  76 }