1 /*
   2  * Copyright (c) 2015, 2018, 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 import jdk.test.lib.Platform;
  31 import jdk.test.lib.process.OutputAnalyzer;
  32 import jdk.test.lib.process.ProcessTools;
  33 
  34 import jdk.test.lib.Utils;
  35 import jdk.test.lib.JDKToolLauncher;
  36 
  37 /**
  38  * @test
  39  * @summary Test deadlock detection
  40  * @requires vm.hasSAandCanAttach
  41  * @library /test/lib
  42  * @build jdk.test.lib.apps.* jdk.test.lib.Platform
  43  * @build DeadlockDetectionTest
  44  * @run main DeadlockDetectionTest
  45  */
  46 public class DeadlockDetectionTest {
  47 
  48     private static LingeredAppWithDeadlock theApp = null;
  49     private static ProcessBuilder processBuilder = new ProcessBuilder();
  50 
  51     private static OutputAnalyzer jstack(String... toolArgs) throws Exception {
  52         JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack");
  53         launcher.addVMArg("-XX:+UsePerfData");
  54         if (toolArgs != null) {
  55             for (String toolArg : toolArgs) {
  56                 launcher.addToolArg(toolArg);
  57             }
  58         }
  59 
  60         processBuilder.command(launcher.getCommand());
  61         System.out.println(processBuilder.command().stream().collect(Collectors.joining(" ")));
  62         OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
  63         System.out.println(output.getOutput());
  64 
  65         return output;
  66     }
  67 
  68     public static void main(String[] args) throws Exception {
  69         System.out.println("Starting DeadlockDetectionTest");
  70 
  71         if (!LingeredApp.isLastModifiedWorking()) {
  72             // Exact behaviour of the test depends on operating system and the test nature,
  73             // so just print the warning and continue
  74             System.err.println("Warning! Last modified time doesn't work.");
  75         }
  76 
  77         try {
  78             List<String> vmArgs = new ArrayList<String>();
  79             vmArgs.add("-XX:+UsePerfData");
  80             vmArgs.addAll(Utils.getVmOptions());
  81 
  82             theApp = new LingeredAppWithDeadlock();
  83             LingeredApp.startApp(vmArgs, theApp);
  84             OutputAnalyzer output = jstack(Long.toString(theApp.getPid()));
  85             System.out.println(output.getOutput());
  86 
  87             if (output.getExitValue() == 3) {
  88                 System.out.println("Test can't run for some reason. Skipping");
  89             }
  90             else {
  91                 output.shouldHaveExitValue(0);
  92                 output.shouldContain("Found 1 deadlock.");
  93             }
  94 
  95         } finally {
  96             LingeredApp.stopApp(theApp);
  97         }
  98     }
  99 }