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| 1 | /* | ||
| 2 | * Copyright (c) 1999, 2008, 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package com.sun.tools.jdi; | ||
| 27 | |||
| 28 | import com.sun.tools.jdi.*; | ||
| 29 | import com.sun.jdi.connect.*; | ||
| 30 | import com.sun.jdi.connect.spi.*; | ||
| 31 | import com.sun.jdi.*; | ||
| 32 | |||
| 33 | import java.util.Map; | ||
| 34 | import java.util.StringTokenizer; | ||
| 35 | import java.util.List; | ||
| 36 | import java.util.ArrayList; | ||
| 37 | import java.io.IOException; | ||
| 38 | import java.io.InterruptedIOException; | ||
| 39 | |||
| 40 | abstract class AbstractLauncher extends ConnectorImpl implements LaunchingConnector { | ||
| 41 | |||
| 42 | abstract public VirtualMachine | ||
| 43 | launch(Map<String,? extends Connector.Argument> arguments) | ||
| 44 | throws IOException, | ||
| 45 | IllegalConnectorArgumentsException, | ||
| 46 | VMStartException; | ||
| 47 | abstract public String name(); | ||
| 48 | abstract public String description(); | ||
| 49 | |||
| 50 | ThreadGroup grp; | ||
| 51 | |||
| 52 | AbstractLauncher() { | ||
| 53 | super(); | ||
| 54 | |||
| 55 | grp = Thread.currentThread().getThreadGroup(); | ||
| 56 | ThreadGroup parent = null; | ||
| 57 | while ((parent = grp.getParent()) != null) { | ||
| 58 | grp = parent; | ||
| 59 | } | ||
| 60 | } | ||
| 61 | |||
| 62 | String[] tokenizeCommand(String command, char quote) { | ||
| 63 | String quoteStr = String.valueOf(quote); // easier to deal with | ||
| 64 | |||
| 65 | /* | ||
| 66 | * Tokenize the command, respecting the given quote character. | ||
| 67 | */ | ||
| 68 | StringTokenizer tokenizer = new StringTokenizer(command, | ||
| 69 | quote + " \t\r\n\f", | ||
| 70 | true); | ||
| 71 | String quoted = null; | ||
| 72 | String pending = null; | ||
| 73 | List<String> tokenList = new ArrayList<String>(); | ||
| 74 | while (tokenizer.hasMoreTokens()) { | ||
| 75 | String token = tokenizer.nextToken(); | ||
| 76 | if (quoted != null) { | ||
| 77 | if (token.equals(quoteStr)) { | ||
| 78 | tokenList.add(quoted); | ||
| 79 | quoted = null; | ||
| 80 | } else { | ||
| 81 | quoted += token; | ||
| 82 | } | ||
| 83 | } else if (pending != null) { | ||
| 84 | if (token.equals(quoteStr)) { | ||
| 85 | quoted = pending; | ||
| 86 | } else if ((token.length() == 1) && | ||
| 87 | Character.isWhitespace(token.charAt(0))) { | ||
| 88 | tokenList.add(pending); | ||
| 89 | } else { | ||
| 90 | throw new InternalException("Unexpected token: " + token); | ||
| 91 | } | ||
| 92 | pending = null; | ||
| 93 | } else { | ||
| 94 | if (token.equals(quoteStr)) { | ||
| 95 | quoted = ""; | ||
| 96 | } else if ((token.length() == 1) && | ||
| 97 | Character.isWhitespace(token.charAt(0))) { | ||
| 98 | // continue | ||
| 99 | } else { | ||
| 100 | pending = token; | ||
| 101 | } | ||
| 102 | } | ||
| 103 | } | ||
| 104 | |||
| 105 | /* | ||
| 106 | * Add final token. | ||
| 107 | */ | ||
| 108 | if (pending != null) { | ||
| 109 | tokenList.add(pending); | ||
| 110 | } | ||
| 111 | |||
| 112 | /* | ||
| 113 | * An unclosed quote at the end of the command. Do an | ||
| 114 | * implicit end quote. | ||
| 115 | */ | ||
| 116 | if (quoted != null) { | ||
| 117 | tokenList.add(quoted); | ||
| 118 | } | ||
| 119 | |||
| 120 | String[] tokenArray = new String[tokenList.size()]; | ||
| 121 | for (int i = 0; i < tokenList.size(); i++) { | ||
| 122 | tokenArray[i] = tokenList.get(i); | ||
| 123 | } | ||
| 124 | return tokenArray; | ||
| 125 | } | ||
| 126 | |||
| 127 | protected VirtualMachine launch(String[] commandArray, String address, | ||
| 128 | TransportService.ListenKey listenKey, | ||
| 129 | TransportService ts) | ||
| 130 | throws IOException, VMStartException { | ||
| 131 | Helper helper = new Helper(commandArray, address, listenKey, ts); | ||
| 132 | helper.launchAndAccept(); | ||
| 133 | |||
| 134 | VirtualMachineManager manager = | ||
| 135 | Bootstrap.virtualMachineManager(); | ||
| 136 | |||
| 137 | return manager.createVirtualMachine(helper.connection(), | ||
| 138 | helper.process()); | ||
| 139 | } | ||
| 140 | |||
| 141 | /** | ||
| 142 | * This class simply provides a context for a single launch and | ||
| 143 | * accept. It provides instance fields that can be used by | ||
| 144 | * all threads involved. This stuff can't be in the Connector proper | ||
| 145 | * because the connector is is a singleton and not specific to any | ||
| 146 | * one launch. | ||
| 147 | */ | ||
| 148 | private class Helper { | ||
| 149 | private final String address; | ||
| 150 | private TransportService.ListenKey listenKey; | ||
| 151 | private TransportService ts; | ||
| 152 | private final String[] commandArray; | ||
| 153 | private Process process = null; | ||
| 154 | private Connection connection = null; | ||
| 155 | private IOException acceptException = null; | ||
| 156 | private boolean exited = false; | ||
| 157 | |||
| 158 | Helper(String[] commandArray, String address, TransportService.ListenKey listenKey, | ||
| 159 | TransportService ts) { | ||
| 160 | this.commandArray = commandArray; | ||
| 161 | this.address = address; | ||
| 162 | this.listenKey = listenKey; | ||
| 163 | this.ts = ts; | ||
| 164 | } | ||
| 165 | |||
| 166 | String commandString() { | ||
| 167 | String str = ""; | ||
| 168 | for (int i = 0; i < commandArray.length; i++) { | ||
| 169 | if (i > 0) { | ||
| 170 | str += " "; | ||
| 171 | } | ||
| 172 | str += commandArray[i]; | ||
| 173 | } | ||
| 174 | return str; | ||
| 175 | } | ||
| 176 | |||
| 177 | synchronized void launchAndAccept() throws | ||
| 178 | IOException, VMStartException { | ||
| 179 | |||
| 180 | process = Runtime.getRuntime().exec(commandArray); | ||
| 181 | |||
| 182 | Thread acceptingThread = acceptConnection(); | ||
| 183 | Thread monitoringThread = monitorTarget(); | ||
| 184 | try { | ||
| 185 | while ((connection == null) && | ||
| 186 | (acceptException == null) && | ||
| 187 | !exited) { | ||
| 188 | wait(); | ||
| 189 | } | ||
| 190 | |||
| 191 | if (exited) { | ||
| 192 | throw new VMStartException( | ||
| 193 | "VM initialization failed for: " + commandString(), process); | ||
| 194 | } | ||
| 195 | if (acceptException != null) { | ||
| 196 | // Rethrow the exception in this thread | ||
| 197 | throw acceptException; | ||
| 198 | } | ||
| 199 | } catch (InterruptedException e) { | ||
| 200 | throw new InterruptedIOException("Interrupted during accept"); | ||
| 201 | } finally { | ||
| 202 | acceptingThread.interrupt(); | ||
| 203 | monitoringThread.interrupt(); | ||
| 204 | } | ||
| 205 | } | ||
| 206 | |||
| 207 | Process process() { | ||
| 208 | return process; | ||
| 209 | } | ||
| 210 | |||
| 211 | Connection connection() { | ||
| 212 | return connection; | ||
| 213 | } | ||
| 214 | |||
| 215 | synchronized void notifyOfExit() { | ||
| 216 | exited = true; | ||
| 217 | notify(); | ||
| 218 | } | ||
| 219 | |||
| 220 | synchronized void notifyOfConnection(Connection connection) { | ||
| 221 | this.connection = connection; | ||
| 222 | notify(); | ||
| 223 | } | ||
| 224 | |||
| 225 | synchronized void notifyOfAcceptException(IOException acceptException) { | ||
| 226 | this.acceptException = acceptException; | ||
| 227 | notify(); | ||
| 228 | } | ||
| 229 | |||
| 230 | Thread monitorTarget() { | ||
| 231 | Thread thread = new Thread(grp, | ||
| 232 | "launched target monitor") { | ||
| 233 | public void run() { | ||
| 234 | try { | ||
| 235 | process.waitFor(); | ||
| 236 | /* | ||
| 237 | * Notify waiting thread of VM error termination | ||
| 238 | */ | ||
| 239 | notifyOfExit(); | ||
| 240 | } catch (InterruptedException e) { | ||
| 241 | // Connection has been established, stop monitoring | ||
| 242 | } | ||
| 243 | } | ||
| 244 | }; | ||
| 245 | thread.setDaemon(true); | ||
| 246 | thread.start(); | ||
| 247 | return thread; | ||
| 248 | } | ||
| 249 | |||
| 250 | Thread acceptConnection() { | ||
| 251 | Thread thread = new Thread(grp, | ||
| 252 | "connection acceptor") { | ||
| 253 | public void run() { | ||
| 254 | try { | ||
| 255 | Connection connection = ts.accept(listenKey, 0, 0); | ||
| 256 | /* | ||
| 257 | * Notify waiting thread of connection | ||
| 258 | */ | ||
| 259 | notifyOfConnection(connection); | ||
| 260 | } catch (InterruptedIOException e) { | ||
| 261 | // VM terminated, stop accepting | ||
| 262 | } catch (IOException e) { | ||
| 263 | // Report any other exception to waiting thread | ||
| 264 | notifyOfAcceptException(e); | ||
| 265 | } | ||
| 266 | } | ||
| 267 | }; | ||
| 268 | thread.setDaemon(true); | ||
| 269 | thread.start(); | ||
| 270 | return thread; | ||
| 271 | } | ||
| 272 | } | ||
| 273 | } | ||