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 }