Source for gnu.classpath.jdwp.processor.ThreadReferenceCommandSet

   1: /* ThreadReferenceCommandSet.java -- class to implement the ThreadReference
   2:    Command Set Copyright (C) 2005 Free Software Foundation
   3:  
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: terms of your choice, provided that you also meet, for each linked
  32: independent module, the terms and conditions of the license of that
  33: module.  An independent module is a module which is not derived from
  34: or based on this library.  If you modify this library, you may extend
  35: this exception to your version of the library, but you are not
  36: obligated to do so.  If you do not wish to do so, delete this
  37: exception statement from your version. */
  38: 
  39: 
  40: package gnu.classpath.jdwp.processor;
  41: 
  42: import gnu.classpath.jdwp.JdwpConstants;
  43: import gnu.classpath.jdwp.VMFrame;
  44: import gnu.classpath.jdwp.VMVirtualMachine;
  45: import gnu.classpath.jdwp.exception.InvalidObjectException;
  46: import gnu.classpath.jdwp.exception.JdwpException;
  47: import gnu.classpath.jdwp.exception.JdwpInternalErrorException;
  48: import gnu.classpath.jdwp.exception.NotImplementedException;
  49: import gnu.classpath.jdwp.id.ObjectId;
  50: import gnu.classpath.jdwp.id.ThreadId;
  51: import gnu.classpath.jdwp.util.JdwpString;
  52: import gnu.classpath.jdwp.util.Location;
  53: 
  54: import java.io.DataOutputStream;
  55: import java.io.IOException;
  56: import java.nio.ByteBuffer;
  57: import java.util.ArrayList;
  58: 
  59: /**
  60:  * A class representing the ThreadReference Command Set.
  61:  * 
  62:  * @author Aaron Luchko <aluchko@redhat.com>
  63:  */
  64: public class ThreadReferenceCommandSet
  65:   extends CommandSet
  66: {
  67:   public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command)
  68:       throws JdwpException
  69:   {
  70:     try
  71:       {
  72:         switch (command)
  73:           {
  74:           case JdwpConstants.CommandSet.ThreadReference.NAME:
  75:             executeName(bb, os);
  76:             break;
  77:           case JdwpConstants.CommandSet.ThreadReference.SUSPEND:
  78:             executeSuspend(bb, os);
  79:             break;
  80:           case JdwpConstants.CommandSet.ThreadReference.RESUME:
  81:             executeResume(bb, os);
  82:             break;
  83:           case JdwpConstants.CommandSet.ThreadReference.STATUS:
  84:             executeStatus(bb, os);
  85:             break;
  86:           case JdwpConstants.CommandSet.ThreadReference.THREAD_GROUP:
  87:             executeThreadGroup(bb, os);
  88:             break;
  89:           case JdwpConstants.CommandSet.ThreadReference.FRAMES:
  90:             executeFrames(bb, os);
  91:             break;
  92:           case JdwpConstants.CommandSet.ThreadReference.FRAME_COUNT:
  93:             executeFrameCount(bb, os);
  94:             break;
  95:           case JdwpConstants.CommandSet.ThreadReference.OWNED_MONITORS:
  96:             executeOwnedMonitors(bb, os);
  97:             break;
  98:           case JdwpConstants.CommandSet.ThreadReference.CURRENT_CONTENDED_MONITOR:
  99:             executeCurrentContendedMonitor(bb, os);
 100:             break;
 101:           case JdwpConstants.CommandSet.ThreadReference.STOP:
 102:             executeStop(bb, os);
 103:             break;
 104:           case JdwpConstants.CommandSet.ThreadReference.INTERRUPT:
 105:             executeInterrupt(bb, os);
 106:             break;
 107:           case JdwpConstants.CommandSet.ThreadReference.SUSPEND_COUNT:
 108:             executeSuspendCount(bb, os);
 109:             break;
 110:           default:
 111:             throw new NotImplementedException("Command " + command + 
 112:               " not found in Thread Reference Command Set.");
 113:           }
 114:       }
 115:     catch (IOException ex)
 116:       {
 117:         // The DataOutputStream we're using isn't talking to a socket at all
 118:         // So if we throw an IOException we're in serious trouble
 119:         throw new JdwpInternalErrorException(ex);
 120:       }
 121: 
 122:     return false;
 123:   }
 124: 
 125:   private void executeName(ByteBuffer bb, DataOutputStream os)
 126:       throws JdwpException, IOException
 127:   {
 128:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 129:     Thread thread = tid.getThread();
 130:     JdwpString.writeString(os, thread.getName());
 131:   }
 132: 
 133:   private void executeSuspend(ByteBuffer bb, DataOutputStream os)
 134:       throws JdwpException, IOException
 135:   {
 136:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 137:     Thread thread = tid.getThread();
 138:     VMVirtualMachine.suspendThread(thread);
 139:   }
 140: 
 141:   private void executeResume(ByteBuffer bb, DataOutputStream os)
 142:       throws JdwpException, IOException
 143:   {
 144:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 145:     Thread thread = tid.getThread();
 146:     VMVirtualMachine.suspendThread(thread);
 147:   }
 148: 
 149:   private void executeStatus(ByteBuffer bb, DataOutputStream os)
 150:       throws JdwpException, IOException
 151:   {
 152:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 153:     Thread thread = tid.getThread();
 154:     int threadStatus = VMVirtualMachine.getThreadStatus(thread);
 155:     // There's only one possible SuspendStatus...
 156:     int suspendStatus = JdwpConstants.SuspendStatus.SUSPENDED;
 157: 
 158:     os.writeInt(threadStatus);
 159:     os.writeInt(suspendStatus);
 160:   }
 161: 
 162:   private void executeThreadGroup(ByteBuffer bb, DataOutputStream os)
 163:       throws JdwpException, IOException
 164:   {
 165:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 166:     Thread thread = tid.getThread();
 167:     ThreadGroup group = thread.getThreadGroup();
 168:     ObjectId groupId = idMan.getObjectId(group);
 169:     groupId.write(os);
 170:   }
 171: 
 172:   private void executeFrames(ByteBuffer bb, DataOutputStream os)
 173:       throws JdwpException, IOException
 174:   {
 175:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 176:     Thread thread = tid.getThread();
 177:     int startFrame = bb.getInt();
 178:     int length = bb.getInt();
 179: 
 180:     ArrayList frames = VMVirtualMachine.getFrames(thread, startFrame, length);
 181:     os.writeInt(frames.size());
 182:     for (int i = 0; i < frames.size(); i++)
 183:       {
 184:         VMFrame frame = (VMFrame) frames.get(i);
 185:         os.writeLong(frame.getId());
 186:         Location loc = frame.getLocation();
 187:         loc.write(os);
 188:       }
 189:   }
 190: 
 191:   private void executeFrameCount(ByteBuffer bb, DataOutputStream os)
 192:       throws JdwpException, IOException
 193:   {
 194:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 195:     Thread thread = tid.getThread();
 196: 
 197:     int frameCount = VMVirtualMachine.getFrameCount(thread);
 198:     os.writeInt(frameCount);
 199:   }
 200: 
 201:   private void executeOwnedMonitors(ByteBuffer bb, DataOutputStream os)
 202:       throws JdwpException
 203:   {
 204:     // This command is optional, determined by VirtualMachines CapabilitiesNew
 205:     // so we'll leave it till later to implement
 206:     throw new NotImplementedException(
 207:       "Command OwnedMonitors not implemented.");
 208:   }
 209: 
 210:   private void executeCurrentContendedMonitor(ByteBuffer bb,
 211:                                               DataOutputStream os)
 212:       throws JdwpException
 213:   {
 214:     // This command is optional, determined by VirtualMachines CapabilitiesNew
 215:     // so we'll leave it till later to implement
 216:     throw new NotImplementedException(
 217:       "Command CurrentContentedMonitors not implemented.");
 218:   }
 219: 
 220:   private void executeStop(ByteBuffer bb, DataOutputStream os)
 221:       throws JdwpException, IOException
 222:   {
 223:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 224:     Thread thread = tid.getThread();
 225:     ObjectId exception = idMan.readObjectId(bb);
 226:     Throwable throwable = (Throwable) exception.getObject();
 227:     thread.stop (throwable);
 228:   }
 229: 
 230:   private void executeInterrupt(ByteBuffer bb, DataOutputStream os)
 231:       throws JdwpException, IOException
 232:   {
 233:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 234:     Thread thread = tid.getThread();
 235:     thread.interrupt();
 236:   }
 237: 
 238:   private void executeSuspendCount(ByteBuffer bb, DataOutputStream os)
 239:       throws JdwpException, IOException
 240:   {
 241:     ThreadId tid = (ThreadId) idMan.readObjectId(bb);
 242:     Thread thread = tid.getThread();
 243:     int suspendCount = VMVirtualMachine.getSuspendCount(thread);
 244:     os.writeInt(suspendCount);
 245:   }
 246: }