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