1 /* 2 * Copyright (c) 2019, 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.io.BufferedReader; 25 import java.io.InputStreamReader; 26 import java.io.IOException; 27 28 import jdk.test.lib.JDKToolLauncher; 29 30 31 public class DebugdUtils { 32 33 private static final String GOLDEN = "Debugger attached"; 34 35 private final String id; 36 37 private Process debugdProcess; 38 39 public DebugdUtils(String id) { 40 this.id = id; 41 debugdProcess = null; 42 } 43 44 public void attach(long pid) throws IOException { 45 JDKToolLauncher jhsdbLauncher = JDKToolLauncher.createUsingTestJDK("jhsdb"); 46 jhsdbLauncher.addToolArg("debugd"); 47 jhsdbLauncher.addToolArg("--pid"); 48 jhsdbLauncher.addToolArg(Long.toString(pid)); 49 if (id != null) { 50 jhsdbLauncher.addToolArg("--serverid"); 51 jhsdbLauncher.addToolArg(id); 52 } 53 debugdProcess = (new ProcessBuilder(jhsdbLauncher.getCommand())).start(); 54 55 // Wait until debug server attached 56 try (BufferedReader reader = new BufferedReader(new InputStreamReader(debugdProcess.getErrorStream()))) { 57 String line; 58 while ((line = reader.readLine()) != null) { 59 if (line.contains(GOLDEN)) { 60 break; 61 } 62 } 63 } 64 } 65 66 public void detach() throws InterruptedException { 67 if (debugdProcess != null) { 68 debugdProcess.destroy(); 69 debugdProcess.waitFor(); 70 } 71 } 72 }