net.sourceforge.phpeclipse.debug.core/src/net/sourceforge/phpdt/internal/debug/core/model/PHPDebugTarget.java

   1 /**********************************************************************
   2 Copyright (c) 2000, 2002 IBM Corp. and others.
   3 All rights reserved. This program and the accompanying materials
   4 are made available under the terms of the Common Public License v1.0
   5 which accompanies this distribution, and is available at
   6 http://www.eclipse.org/legal/cpl-v10.html
   7
   8 Contributors:
   9     IBM Corporation - Initial implementation
  10     Vicente Fernando - www.alfersoft.com.ar
  11 **********************************************************************/
  12 package net.sourceforge.phpdt.internal.debug.core.model;
  13
  14 import net.sourceforge.phpdt.internal.debug.core.PHPDBGProxy;
  15 import net.sourceforge.phpdt.internal.debug.core.PHPDebugCorePlugin;
  16
  17 import org.eclipse.core.resources.IMarkerDelta;
  18 import org.eclipse.debug.core.DebugEvent;
  19 import org.eclipse.debug.core.DebugException;
  20 import org.eclipse.debug.core.DebugPlugin;
  21 import org.eclipse.debug.core.IBreakpointManager;
  22 import org.eclipse.debug.core.IDebugEventSetListener;
  23 import org.eclipse.debug.core.ILaunch;
  24 import org.eclipse.debug.core.ILaunchListener;
  25 import org.eclipse.debug.core.model.IBreakpoint;
  26 import org.eclipse.debug.core.model.IDebugTarget;
  27 import org.eclipse.debug.core.model.IMemoryBlock;
  28 import org.eclipse.debug.core.model.IProcess;
  29 import org.eclipse.debug.core.model.IThread;
  30
  31 /**
  32  * Debug target for PHP debug model.
  33  */
  34 public class PHPDebugTarget implements IPHPDebugTarget, ILaunchListener, IDebugEventSetListener {
  35
  36         private IProcess process;
  37         private boolean isTerminated;
  38         private boolean isSuspended;
  39         private ILaunch launch;
  40         private PHPThread[] threads;
  41         private PHPDBGProxy phpDBGProxy;
  42
  43         public PHPDebugTarget(ILaunch launch, IProcess process) {
  44                 this.isSuspended = false;
  45                 this.launch = launch;
  46                 this.process = process;
  47                 this.threads = new PHPThread[0];
  48                 IBreakpointManager manager= DebugPlugin.getDefault().getBreakpointManager();
  49                 manager.addBreakpointListener(this);
  50                 DebugPlugin.getDefault().addDebugEventListener(this);
  51                 initialize();
  52         }
  53
  54         protected synchronized void initialize() {
  55                 DebugEvent ev = new DebugEvent(this, DebugEvent.CREATE);
  56                 DebugPlugin.getDefault().fireDebugEventSet(new DebugEvent[] { ev });
  57         }
  58
  59         public void addThread(PHPThread phpThread) {
  60                 int i;
  61                 PHPThread[] updatedThreads = new PHPThread[threads.length + 1];
  62
  63                 for(i=0; i < threads.length; i++) {
  64                         updatedThreads[i] = threads[i];
  65                 }
  66                 updatedThreads[i] = phpThread;
  67                 threads = updatedThreads;
  68
  69                 fireChangeEvent();
  70         }
  71
  72         private void fireChangeEvent() {
  73                 DebugEvent ev = new DebugEvent(this, DebugEvent.CHANGE);
  74                 DebugPlugin.getDefault().fireDebugEventSet(new DebugEvent[] { ev });
  75         }
  76
  77         protected PHPThread getThreadById(int id) {
  78                 for (int i = 0; i < threads.length; i++) {
  79                         if (threads[i].getId() == id) {
  80                                 return threads[i];
  81                         }
  82                 }
  83                 return null;
  84         }
  85
  86         public IThread[] getThreads() {
  87                 return threads;
  88         }
  89
  90         public boolean hasThreads() throws DebugException {
  91                 return threads.length > 0;
  92         }
  93
  94         public String getName() throws DebugException {
  95                 return "PHP Debugger at localhost:" + getPHPDBGProxy().getPort();
  96         }
  97
  98         public boolean supportsBreakpoint(IBreakpoint arg0) {
  99                 return false;
 100         }
 101
 102         public String getModelIdentifier() {
 103                 return PHPDebugCorePlugin.PLUGIN_ID;
 104         }
 105
 106         public IDebugTarget getDebugTarget() {
 107                 return this;
 108         }
 109
 110         public ILaunch getLaunch() {
 111                 return launch;
 112         }
 113
 114         public boolean canTerminate() {
 115                 return !isTerminated;
 116         }
 117
 118         public boolean isTerminated() {
 119                 return isTerminated;
 120         }
 121
 122         public synchronized void terminate() {
 123                 // This method is synchronized to control a race condition between the
 124                 // UI thread that terminates the debugging session, and the slave
 125                 // thread that executes PHPLoop.run
 126                 if (isTerminated)
 127                         // Avoid terminating twice...
 128                         return;
 129                 phpDBGProxy.stop();
 130                 this.threads = new PHPThread[0];
 131                 isTerminated = true;
 132                 fireChangeEvent();
 133         }
 134
 135         public boolean canResume() {
 136                 if(isTerminated) return false;
 137                 return isSuspended;
 138         }
 139
 140         public boolean canSuspend() {
 141                 if(isTerminated) return false;
 142                 return !isSuspended;
 143         }
 144
 145         public boolean isSuspended() {
 146                 return isSuspended;
 147         }
 148
 149         public void resume() throws DebugException {
 150                 this.getPHPDBGProxy().resume();
 151                 isSuspended= false;
 152         }
 153
 154         public void suspend() throws DebugException {
 155                 this.getPHPDBGProxy().pause();
 156                 isSuspended= true;
 157         }
 158
 159         public void breakpointAdded(IBreakpoint breakpoint) {
 160                 this.getPHPDBGProxy().addBreakpoint(breakpoint) ;
 161         }
 162
 163         public void breakpointRemoved(IBreakpoint breakpoint, IMarkerDelta arg1) {
 164                 this.getPHPDBGProxy().removeBreakpoint(breakpoint) ;
 165         }
 166
 167         public void breakpointChanged(IBreakpoint breakpoint, IMarkerDelta arg1) {
 168                 // is called e.g. after a line has been inserted before a breakpoint
 169                 // but then the debugger is out of sync with the file anyway, so debugging
 170                 // should be stopped here.
 171         }
 172
 173         public boolean canDisconnect() {
 174                 return false;
 175         }
 176
 177         public void disconnect() throws DebugException {
 178         }
 179
 180         public boolean isDisconnected() {
 181                 return false;
 182         }
 183
 184         public boolean supportsStorageRetrieval() {
 185                 return false;
 186         }
 187
 188         public IMemoryBlock getMemoryBlock(long arg0, long arg1) throws DebugException {
 189                 return null;
 190         }
 191
 192         public Object getAdapter(Class arg0) {
 193                 return null;
 194         }
 195
 196         public IProcess getProcess() {
 197                 return process;
 198         }
 199
 200         public void setProcess(IProcess process) {
 201                 this.process = process;
 202         }
 203
 204         public PHPDBGProxy getPHPDBGProxy() {
 205                 return phpDBGProxy;
 206         }
 207
 208         public void setPHPDBGProxy(PHPDBGProxy phpDBGProxy) {
 209                 this.phpDBGProxy = phpDBGProxy;
 210         }
 211
 212         /**
 213          * @see ILaunchListener#launchRemoved(ILaunch)
 214          */
 215         public void launchRemoved(ILaunch launch) {
 216                 if (!isTerminated()) {
 217                         return;
 218                 }
 219                 if (launch.equals(getLaunch())) {
 220                         // This target has been deregistered, but it hasn't successfully terminated.
 221                         // Update internal state to reflect that it is disconnected
 222                         terminate();
 223                 }
 224         }
 225
 226         /**
 227          * @see ILaunchListener#launchAdded(ILaunch)
 228          */
 229         public void launchAdded(ILaunch launch) {
 230         }
 231
 232         /**
 233          * @see ILaunchListener#launchChanged(ILaunch)
 234          */
 235         public void launchChanged(ILaunch launch) {
 236         }
 237
 238         /**
 239          * When a debug target or process terminates, terminate DBG Proxy.
 240          *
 241          * @see IDebugEventSetListener#handleDebugEvents(DebugEvent[])
 242          */
 243         public void handleDebugEvents(DebugEvent[] events) {
 244                 for (int i = 0; i < events.length; i++) {
 245                         DebugEvent event = events[i];
 246                         if (event.getKind() == DebugEvent.TERMINATE) {
 247                                 Object source = event.getSource();
 248                                 if (source instanceof PHPDebugTarget || source instanceof IDebugTarget) {
 249                                         getPHPDBGProxy().stop();
 250                                 } else if(source instanceof IProcess) {
 251                                         if(getDebugTarget().getProcess() == (IProcess)source) {
 252                                                 getPHPDBGProxy().stop();
 253                                         }
 254                                 }
 255                         } else if (event.getKind() == DebugEvent.SUSPEND) {
 256                                 getPHPDBGProxy().pause();
 257                         }
 258                 }
 259         }
 260 }
 261