1 /* 2 * Copyright (c) 2005, 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.Arrays; 25 26 import jdk.test.lib.process.OutputAnalyzer; 27 import jdk.test.lib.process.ProcessTools; 28 import jdk.testlibrary.JDKToolLauncher; 29 30 /* 31 * @test 32 * @summary Unit test for jstack utility 33 * @library /lib/testlibrary 34 * @library /test/lib 35 * @build jdk.testlibrary.* 36 * @run main BasicJStackTest 37 */ 38 public class BasicJStackTest { 39 40 private static ProcessBuilder processBuilder = new ProcessBuilder(); 41 42 public static void main(String[] args) throws Exception { 43 testJstackNoArgs(); 44 testJstack_l(); 45 } 46 47 private static void testJstackNoArgs() throws Exception { 48 OutputAnalyzer output = jstack(); 49 output.shouldHaveExitValue(0); 50 } 51 52 private static void testJstack_l() throws Exception { 53 OutputAnalyzer output = jstack("-l"); 54 output.shouldHaveExitValue(0); 55 } 56 57 private static OutputAnalyzer jstack(String... toolArgs) throws Exception { 58 JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack"); 59 launcher.addVMArg("-XX:+UsePerfData"); 60 if (toolArgs != null) { 61 for (String toolArg : toolArgs) { 62 launcher.addToolArg(toolArg); 63 } 64 } 65 launcher.addToolArg(Long.toString(ProcessTools.getProcessId())); 66 67 processBuilder.command(launcher.getCommand()); 68 System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", "")); 69 OutputAnalyzer output = ProcessTools.executeProcess(processBuilder); 70 System.out.println(output.getOutput()); 71 72 return output; 73 } 74 75 }