1 /* 2 * Copyright (c) 2013, 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 package jdk.testlibrary; 25 26 import java.util.ArrayList; 27 28 public class JcmdBase { 29 30 private static ProcessBuilder processBuilder = new ProcessBuilder(); 31 32 /** 33 * Attach jcmd to the current process 34 * 35 * @param commandArgs 36 * jcmd command line parameters, e.g. JFR.start 37 * @return jcmd output 38 * @throws Exception 39 */ 40 public final static OutputAnalyzer jcmd(String... commandArgs) 41 throws Exception { 42 ArrayList<String> cmd = new ArrayList<String>(); 43 String cmdString = ""; 44 45 // jcmd from the jdk to be tested 46 String jcmdPath = JdkFinder.getTool("jcmd", false); 47 cmd.add(jcmdPath); 48 cmdString += jcmdPath; 49 50 String pid = Integer.toString(ProcessTools.getProcessId()); 51 cmd.add(pid); 52 cmdString += " " + pid; 53 54 for (int i = 0; i < commandArgs.length; i++) { 55 cmd.add(commandArgs[i]); 56 cmdString += " " + commandArgs[i]; 57 } 58 59 // Log command line for debugging purpose 60 System.out.println("Command line:"); 61 System.out.println(cmdString); 62 63 processBuilder.command(cmd); 64 OutputAnalyzer output = new OutputAnalyzer(processBuilder.start()); 65 66 // Log output for debugging purpose 67 System.out.println("Command output:"); 68 System.out.println(output.getOutput()); 69 70 if (output.getExitValue() != 0) { 71 throw new Exception(processBuilder.command() 72 + " resulted in exit value " + output.getExitValue() 73 + " , expected to get 0"); 74 } 75 76 return output; 77 } 78 79 }