1 /*
   2  * Copyright (c) 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.ArrayList;
  25 import java.util.List;
  26 import java.util.stream.Collectors;
  27 
  28 import jdk.test.lib.apps.LingeredApp;
  29 import jdk.test.lib.apps.LingeredAppWithDeadlock;
  30 
  31 import jdk.testlibrary.Utils;
  32 import jdk.testlibrary.Platform;
  33 import jdk.testlibrary.JDKToolLauncher;
  34 import jdk.testlibrary.OutputAnalyzer;
  35 import jdk.testlibrary.ProcessTools;
  36 
  37 /*
  38  * @test
  39  * @summary Test deadlock detection
  40  * @library /test/lib
  41  * @library /lib/testlibrary
  42  * @build jdk.testlibrary.*
  43  * @build jdk.test.lib.apps.*
  44  * @build DeadlockDetectionTest
  45  * @run main DeadlockDetectionTest
  46  */
  47 public class DeadlockDetectionTest {
  48 
  49     private static LingeredAppWithDeadlock theApp = null;
  50     private static ProcessBuilder processBuilder = new ProcessBuilder();
  51 
  52     private static OutputAnalyzer jstack(String... toolArgs) throws Exception {
  53         JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack");
  54         launcher.addVMArg("-XX:+UsePerfData");
  55         if (toolArgs != null) {
  56             for (String toolArg : toolArgs) {
  57                 launcher.addToolArg(toolArg);
  58             }
  59         }
  60 
  61         processBuilder.command(launcher.getCommand());
  62         System.out.println(processBuilder.command().stream().collect(Collectors.joining(" ")));
  63         OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
  64         System.out.println(output.getOutput());
  65 
  66         return output;
  67     }
  68 
  69     public static void main(String[] args) throws Exception {
  70         System.out.println("Starting DeadlockDetectionTest");
  71 
  72         if (!Platform.shouldSAAttach()) {
  73             // Silently skip the test if we don't have enough permissions to attach
  74             System.err.println("Error! Insufficient permissions to attach.");
  75             return;
  76         }
  77 
  78         if (!LingeredApp.isLastModifiedWorking()) {
  79             // Exact behaviour of the test depends on operating system and the test nature,
  80             // so just print the warning and continue
  81             System.err.println("Warning! Last modified time doesn't work.");
  82         }
  83 
  84         try {
  85             List<String> vmArgs = new ArrayList<String>();
  86             vmArgs.add("-XX:+UsePerfData");
  87             vmArgs.addAll(Utils.getVmOptions());
  88 
  89             theApp = new LingeredAppWithDeadlock();
  90             LingeredApp.startApp(vmArgs, theApp);
  91             OutputAnalyzer output = jstack(Long.toString(theApp.getPid()));
  92             System.out.println(output.getOutput());
  93 
  94             if (output.getExitValue() == 3) {
  95                 System.out.println("Test can't run for some reason. Skipping");
  96             }
  97             else {
  98                 output.shouldHaveExitValue(0);
  99                 output.shouldContain("Found 1 deadlock.");
 100             }
 101 
 102         } finally {
 103             LingeredApp.stopApp(theApp);
 104         }
 105     }
 106 }