Showing the changes to java/pkg/com/sun/tools/example/debug/bdi/ChildSession.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,300 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 1998, 1999, 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.example.debug.bdi; | ||
| 27 | |||
| 28 | import com.sun.jdi.*; | ||
| 29 | import com.sun.jdi.connect.LaunchingConnector; | ||
| 30 | import com.sun.jdi.connect.Connector; | ||
| 31 | import com.sun.jdi.connect.VMStartException; | ||
| 32 | import com.sun.jdi.connect.IllegalConnectorArgumentsException; | ||
| 33 | import java.io.*; | ||
| 34 | import java.util.Map; | ||
| 35 | import javax.swing.SwingUtilities; | ||
| 36 | |||
| 37 | |||
| 38 | class ChildSession extends Session { | ||
| 39 | |||
| 40 | private Process process; | ||
| 41 | |||
| 42 | private PrintWriter in; | ||
| 43 | private BufferedReader out; | ||
| 44 | private BufferedReader err; | ||
| 45 | |||
| 46 | private InputListener input; | ||
| 47 | private OutputListener output; | ||
| 48 | private OutputListener error; | ||
| 49 | |||
| 50 | public ChildSession(ExecutionManager runtime, | ||
| 51 | String userVMArgs, String cmdLine, | ||
| 52 | InputListener input, | ||
| 53 | OutputListener output, | ||
| 54 | OutputListener error, | ||
| 55 | OutputListener diagnostics) { | ||
| 56 | this(runtime, getVM(diagnostics, userVMArgs, cmdLine), | ||
| 57 | input, output, error, diagnostics); | ||
| 58 | } | ||
| 59 | |||
| 60 | public ChildSession(ExecutionManager runtime, | ||
| 61 | LaunchingConnector connector, | ||
| 62 | Map<String, Connector.Argument> arguments, | ||
| 63 | InputListener input, | ||
| 64 | OutputListener output, | ||
| 65 | OutputListener error, | ||
| 66 | OutputListener diagnostics) { | ||
| 67 | this(runtime, generalGetVM(diagnostics, connector, arguments), | ||
| 68 | input, output, error, diagnostics); | ||
| 69 | } | ||
| 70 | |||
| 71 | private ChildSession(ExecutionManager runtime, | ||
| 72 | VirtualMachine vm, | ||
| 73 | InputListener input, | ||
| 74 | OutputListener output, | ||
| 75 | OutputListener error, | ||
| 76 | OutputListener diagnostics) { | ||
| 77 | super(vm, runtime, diagnostics); | ||
| 78 | this.input = input; | ||
| 79 | this.output = output; | ||
| 80 | this.error = error; | ||
| 81 | } | ||
| 82 | |||
| 83 | @Override | ||
| 84 | public boolean attach() { | ||
| 85 | |||
| 86 | if (!connectToVMProcess()) { | ||
| 87 | diagnostics.putString("Could not launch VM"); | ||
| 88 | return false; | ||
| 89 | } | ||
| 90 | |||
| 91 | /* | ||
| 92 | * Create a Thread that will retrieve and display any output. | ||
| 93 | * Needs to be high priority, else debugger may exit before | ||
| 94 | * it can be displayed. | ||
| 95 | */ | ||
| 96 | |||
| 97 | //### Rename InputWriter and OutputReader classes | ||
| 98 | //### Thread priorities cribbed from ttydebug. Think about them. | ||
| 99 | |||
| 100 | OutputReader outputReader = | ||
| 101 | new OutputReader("output reader", "output", | ||
| 102 | out, output, diagnostics); | ||
| 103 | outputReader.setPriority(Thread.MAX_PRIORITY-1); | ||
| 104 | outputReader.start(); | ||
| 105 | |||
| 106 | OutputReader errorReader = | ||
| 107 | new OutputReader("error reader", "error", | ||
| 108 | err, error, diagnostics); | ||
| 109 | errorReader.setPriority(Thread.MAX_PRIORITY-1); | ||
| 110 | errorReader.start(); | ||
| 111 | |||
| 112 | InputWriter inputWriter = | ||
| 113 | new InputWriter("input writer", in, input); | ||
| 114 | inputWriter.setPriority(Thread.MAX_PRIORITY-1); | ||
| 115 | inputWriter.start(); | ||
| 116 | |||
| 117 | if (!super.attach()) { | ||
| 118 | if (process != null) { | ||
| 119 | process.destroy(); | ||
| 120 | process = null; | ||
| 121 | } | ||
| 122 | return false; | ||
| 123 | } | ||
| 124 | |||
| 125 | //### debug | ||
| 126 | //System.out.println("IO after attach: "+ inputWriter + " " + outputReader + " "+ errorReader); | ||
| 127 | |||
| 128 | return true; | ||
| 129 | } | ||
| 130 | |||
| 131 | @Override | ||
| 132 | public void detach() { | ||
| 133 | |||
| 134 | //### debug | ||
| 135 | //System.out.println("IO before detach: "+ inputWriter + " " + outputReader + " "+ errorReader); | ||
| 136 | |||
| 137 | super.detach(); | ||
| 138 | |||
| 139 | /* | ||
| 140 | inputWriter.quit(); | ||
| 141 | outputReader.quit(); | ||
| 142 | errorReader.quit(); | ||
| 143 | */ | ||
| 144 | |||
| 145 | if (process != null) { | ||
| 146 | process.destroy(); | ||
| 147 | process = null; | ||
| 148 | } | ||
| 149 | |||
| 150 | } | ||
| 151 | |||
| 152 | /** | ||
| 153 | * Launch child java interpreter, return host:port | ||
| 154 | */ | ||
| 155 | |||
| 156 | static private void dumpStream(OutputListener diagnostics, | ||
| 157 | InputStream stream) throws IOException { | ||
| 158 | BufferedReader in = | ||
| 159 | new BufferedReader(new InputStreamReader(stream)); | ||
| 160 | String line; | ||
| 161 | while ((line = in.readLine()) != null) { | ||
| 162 | diagnostics.putString(line); | ||
| 163 | } | ||
| 164 | } | ||
| 165 | |||
| 166 | static private void dumpFailedLaunchInfo(OutputListener diagnostics, | ||
| 167 | Process process) { | ||
| 168 | try { | ||
| 169 | dumpStream(diagnostics, process.getErrorStream()); | ||
| 170 | dumpStream(diagnostics, process.getInputStream()); | ||
| 171 | } catch (IOException e) { | ||
| 172 | diagnostics.putString("Unable to display process output: " + | ||
| 173 | e.getMessage()); | ||
| 174 | } | ||
| 175 | } | ||
| 176 | |||
| 177 | static private VirtualMachine getVM(OutputListener diagnostics, | ||
| 178 | String userVMArgs, | ||
| 179 | String cmdLine) { | ||
| 180 | VirtualMachineManager manager = Bootstrap.virtualMachineManager(); | ||
| 181 | LaunchingConnector connector = manager.defaultConnector(); | ||
| 182 | Map<String, Connector.Argument> arguments = connector.defaultArguments(); | ||
| 183 | arguments.get("options").setValue(userVMArgs); | ||
| 184 | arguments.get("main").setValue(cmdLine); | ||
| 185 | return generalGetVM(diagnostics, connector, arguments); | ||
| 186 | } | ||
| 187 | |||
| 188 | static private VirtualMachine generalGetVM(OutputListener diagnostics, | ||
| 189 | LaunchingConnector connector, | ||
| 190 | Map<String, Connector.Argument> arguments) { | ||
| 191 | VirtualMachine vm = null; | ||
| 192 | try { | ||
| 193 | diagnostics.putString("Starting child."); | ||
| 194 | vm = connector.launch(arguments); | ||
| 195 | } catch (IOException ioe) { | ||
| 196 | diagnostics.putString("Unable to start child: " + ioe.getMessage()); | ||
| 197 | } catch (IllegalConnectorArgumentsException icae) { | ||
| 198 | diagnostics.putString("Unable to start child: " + icae.getMessage()); | ||
| 199 | } catch (VMStartException vmse) { | ||
| 200 | diagnostics.putString("Unable to start child: " + vmse.getMessage() + '\n'); | ||
| 201 | dumpFailedLaunchInfo(diagnostics, vmse.process()); | ||
| 202 | } | ||
| 203 | return vm; | ||
| 204 | } | ||
| 205 | |||
| 206 | private boolean connectToVMProcess() { | ||
| 207 | if (vm == null) { | ||
| 208 | return false; | ||
| 209 | } | ||
| 210 | process = vm.process(); | ||
| 211 | in = new PrintWriter(new OutputStreamWriter(process.getOutputStream())); | ||
| 212 | //### Note small buffer sizes! | ||
| 213 | out = new BufferedReader(new InputStreamReader(process.getInputStream()), 1); | ||
| 214 | err = new BufferedReader(new InputStreamReader(process.getErrorStream()), 1); | ||
| 215 | return true; | ||
| 216 | } | ||
| 217 | |||
| 218 | /** | ||
| 219 | * Threads to handle application input/output. | ||
| 220 | */ | ||
| 221 | |||
| 222 | private static class OutputReader extends Thread { | ||
| 223 | |||
| 224 | private String streamName; | ||
| 225 | private BufferedReader stream; | ||
| 226 | private OutputListener output; | ||
| 227 | private OutputListener diagnostics; | ||
| 228 | private boolean running = true; | ||
| 229 | private char[] buffer = new char[512]; | ||
| 230 | |||
| 231 | OutputReader(String threadName, | ||
| 232 | String streamName, | ||
| 233 | BufferedReader stream, | ||
| 234 | OutputListener output, | ||
| 235 | OutputListener diagnostics) { | ||
| 236 | super(threadName); | ||
| 237 | this.streamName = streamName; | ||
| 238 | this.stream = stream; | ||
| 239 | this.output = output; | ||
| 240 | this.diagnostics = diagnostics; | ||
| 241 | } | ||
| 242 | |||
| 243 | @Override | ||
| 244 | public void run() { | ||
| 245 | try { | ||
| 246 | int count; | ||
| 247 | while (running && (count = stream.read(buffer, 0, 512)) != -1) { | ||
| 248 | if (count > 0) { | ||
| 249 | // Run in Swing event dispatcher thread. | ||
| 250 | final String chars = new String(buffer, 0, count); | ||
| 251 | SwingUtilities.invokeLater(new Runnable() { | ||
| 252 | @Override | ||
| 253 | public void run() { | ||
| 254 | output.putString(chars); | ||
| 255 | } | ||
| 256 | }); | ||
| 257 | } | ||
| 258 | //### Should we sleep briefly here? | ||
| 259 | } | ||
| 260 | } catch (IOException e) { | ||
| 261 | // Run in Swing event dispatcher thread. | ||
| 262 | SwingUtilities.invokeLater(new Runnable() { | ||
| 263 | @Override | ||
| 264 | public void run() { | ||
| 265 | diagnostics.putString("IO error reading " + | ||
| 266 | streamName + | ||
| 267 | " stream of child java interpreter"); | ||
| 268 | } | ||
| 269 | }); | ||
| 270 | } | ||
| 271 | } | ||
| 272 | } | ||
| 273 | |||
| 274 | private static class InputWriter extends Thread { | ||
| 275 | |||
| 276 | private PrintWriter stream; | ||
| 277 | private InputListener input; | ||
| 278 | private boolean running = true; | ||
| 279 | |||
| 280 | InputWriter(String threadName, | ||
| 281 | PrintWriter stream, | ||
| 282 | InputListener input) { | ||
| 283 | super(threadName); | ||
| 284 | this.stream = stream; | ||
| 285 | this.input = input; | ||
| 286 | } | ||
| 287 | |||
| 288 | @Override | ||
| 289 | public void run() { | ||
| 290 | String line; | ||
| 291 | while (running) { | ||
| 292 | line = input.getLine(); | ||
| 293 | stream.println(line); | ||
| 294 | // Should not be needed for println above! | ||
| 295 | stream.flush(); | ||
| 296 | } | ||
| 297 | } | ||
| 298 | } | ||
| 299 | |||
| 300 | } | ||