J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999-2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any 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] = (String)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 | } |