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.process.OutputAnalyzer; 27 import jdk.test.lib.process.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 /test/lib 37 * @run main JstackThreadTest 38 */ 39 public class JstackThreadTest { 40 static class NamedThread extends Thread { 41 CountDownLatch latch; 42 NamedThread(String name, CountDownLatch latch) { 43 this.latch = latch; 44 setName(name); 45 46 } 47 @Override 48 public void run() { 49 latch.countDown(); 50 Utils.sleep(); 51 } 52 } 53 54 public static void main(String[] args) throws Exception { 55 StringBuilder sb = new StringBuilder(); 56 /*create a string more than 1996 character */ 57 for(int i = 0; i < 1998; i++){ 58 sb.append("a"); 59 } 60 testWithName(sb.toString()); 61 } 62 63 private static void testWithName(String name) throws Exception { 64 //parent thread countDown latch 65 CountDownLatch latch = new CountDownLatch(1); 66 // Start a thread with a long thread name 67 NamedThread thread = new NamedThread(name, latch); 68 thread.setDaemon(true); 69 thread.start(); 70 ProcessBuilder processBuilder = new ProcessBuilder(); 71 JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack"); 72 launcher.addToolArg("-l"); 73 launcher.addToolArg(Long.toString(ProcessTools.getProcessId())); 74 processBuilder.command(launcher.getCommand()); 75 System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", "")); 76 // Ensuring that Jstack will always run after NamedThread 77 latch.await(); 78 OutputAnalyzer output = ProcessTools.executeProcess(processBuilder); 79 System.out.println(output.getOutput()); 80 output.shouldContain("\""+ name + "\""); 81 } 82 }