1 /* 2 * Copyright (c) 2016, 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 import jdk.test.lib.JDKToolLauncher; 26 import jdk.test.lib.OutputAnalyzer; 27 import jdk.test.lib.ProcessTools; 28 import utils.Utils; 29 import java.util.concurrent.CountDownLatch; 30 31 /* 32 * @test JstackThreadTest 33 * @bug 8151442 34 * @summary jstack doesn't close quotation marks properly with threads' name greater than 1996 characters 35 * @modules java.base/jdk.internal.misc 36 * @library /testlibrary 37 * @build jdk.test.lib.* 38 * @run main JstackThreadTest 39 */ 40 public class JstackThreadTest { 41 static class NamedThread extends Thread { 42 CountDownLatch latch; 43 NamedThread(String name, CountDownLatch latch) { 44 this.latch = latch; 45 setName(name); 46 47 } 48 @Override 49 public void run() { 50 latch.countDown(); 51 Utils.sleep(); 52 } 53 } 54 55 public static void main(String[] args) throws Exception { 56 StringBuilder sb = new StringBuilder(); 57 /*create a string more than 1996 character */ 58 for(int i = 0; i < 1998; i++){ 59 sb.append("a"); 60 } 61 testWithName(sb.toString()); 62 } 63 64 private static void testWithName(String name) throws Exception { 65 //parent thread countDown latch 66 CountDownLatch latch = new CountDownLatch(1); 67 // Start a thread with a long thread name 68 NamedThread thread = new NamedThread(name, latch); 69 thread.setDaemon(true); 70 thread.start(); 71 ProcessBuilder processBuilder = new ProcessBuilder(); 72 JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack"); 73 launcher.addToolArg("-l"); 74 launcher.addToolArg(Long.toString(ProcessTools.getProcessId())); 75 processBuilder.command(launcher.getCommand()); 76 System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", "")); 77 // Ensuring that Jstack will always run after NamedThread 78 latch.await(); 79 OutputAnalyzer output = ProcessTools.executeProcess(processBuilder); 80 System.out.println(output.getOutput()); 81 output.shouldContain("\""+ name + "\""); 82 } 83 }