mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft/VirtualMachine.cs

   1 using System;
   2 using System.IO;
   3 using System.Threading;
   4 using System.Net;
   5 using System.Diagnostics;
   6 using System.Collections;
   7 using System.Collections.Generic;
   8 using Mono.Cecil.Metadata;
   9
  10 namespace Mono.Debugger.Soft
  11 {
  12         public class VirtualMachine : Mirror
  13         {
  14                 Queue queue;
  15                 object queue_monitor;
  16                 object startup_monitor;
  17                 AppDomainMirror root_domain;
  18                 Dictionary<int, EventRequest> requests;
  19                 ITargetProcess process;
  20
  21                 internal Connection conn;
  22
  23                 VersionInfo version;
  24
  25                 internal VirtualMachine (ITargetProcess process, Connection conn) : base () {
  26                         SetVirtualMachine (this);
  27                         queue = new Queue ();
  28                         queue_monitor = new Object ();
  29                         startup_monitor = new Object ();
  30                         requests = new Dictionary <int, EventRequest> ();
  31                         this.conn = conn;
  32                         this.process = process;
  33                         conn.ErrorHandler += ErrorHandler;
  34                 }
  35
  36                 // The standard output of the process is available normally through Process
  37                 public StreamReader StandardOutput { get; set; }
  38                 public StreamReader StandardError { get; set; }
  39
  40
  41                 public Process Process {
  42                         get {
  43                                 ProcessWrapper pw = process as ProcessWrapper;
  44                                 if (pw == null)
  45                                     throw new InvalidOperationException ("Process instance not available");
  46                                 return pw.Process;
  47                         }
  48                 }
  49
  50                 public ITargetProcess TargetProcess {
  51                         get {
  52                                 return process;
  53                         }
  54                 }
  55
  56                 public AppDomainMirror RootDomain {
  57                         get {
  58                                 return root_domain;
  59                         }
  60             }
  61
  62                 public EndPoint EndPoint {
  63                         get {
  64                                 var tcpConn = conn as TcpConnection;
  65                                 if (tcpConn != null)
  66                                         return tcpConn.EndPoint;
  67                                 return null;
  68                         }
  69                 }
  70
  71                 public VersionInfo Version {
  72                         get {
  73                                 return version;
  74                         }
  75                 }
  76
  77                 EventSet current_es;
  78                 int current_es_index;
  79
  80                 /*
  81                  * It is impossible to determine when to resume when using this method, since
  82                  * the debuggee is suspended only once per event-set, not event.
  83                  */
  84                 [Obsolete ("Use GetNextEventSet () instead")]
  85                 public Event GetNextEvent () {
  86                         lock (queue_monitor) {
  87                                 if (current_es == null || current_es_index == current_es.Events.Length) {
  88                                         if (queue.Count == 0)
  89                                                 Monitor.Wait (queue_monitor);
  90                                         current_es = (EventSet)queue.Dequeue ();
  91                                         current_es_index = 0;
  92                                 }
  93                                 return current_es.Events [current_es_index ++];
  94                         }
  95                 }
  96
  97                 public Event GetNextEvent (int timeout) {
  98                         throw new NotImplementedException ();
  99                 }
 100
 101                 public EventSet GetNextEventSet () {
 102                         lock (queue_monitor) {
 103                                 if (queue.Count == 0)
 104                                         Monitor.Wait (queue_monitor);
 105
 106                                 current_es = null;
 107                                 current_es_index = 0;
 108
 109                                 return (EventSet)queue.Dequeue ();
 110                         }
 111                 }
 112
 113                 [Obsolete ("Use GetNextEventSet () instead")]
 114                 public T GetNextEvent<T> () where T : Event {
 115                         return GetNextEvent () as T;
 116                 }
 117
 118                 public void Suspend () {
 119                         conn.VM_Suspend ();
 120             }
 121
 122                 public void Resume () {
 123                         try {
 124                                 conn.VM_Resume ();
 125                         } catch (CommandException ex) {
 126                                 if (ex.ErrorCode == ErrorCode.NOT_SUSPENDED)
 127                                         throw new InvalidOperationException ("The vm is not suspended.");
 128                                 else
 129                                         throw;
 130                         }
 131             }
 132
 133                 public void Exit (int exitCode) {
 134                         conn.VM_Exit (exitCode);
 135                 }
 136
 137                 public void Detach () {
 138                         conn.VM_Dispose ();
 139                         conn.Close ();
 140                         notify_vm_event (EventType.VMDisconnect, SuspendPolicy.None, 0, 0, null);
 141                 }
 142
 143                 [Obsolete ("This method was poorly named; use the Detach() method instead")]
 144                 public void Dispose ()
 145                 {
 146                         Detach ();
 147                 }
 148
 149                 public void ForceDisconnect ()
 150                 {
 151                         conn.ForceDisconnect ();
 152                 }
 153
 154                 public IList<ThreadMirror> GetThreads () {
 155                         long[] ids = vm.conn.VM_GetThreads ();
 156                         ThreadMirror[] res = new ThreadMirror [ids.Length];
 157                         for (int i = 0; i < ids.Length; ++i)
 158                                 res [i] = GetThread (ids [i]);
 159                         return res;
 160                 }
 161
 162                 // Same as the mirrorOf methods in JDI
 163                 public PrimitiveValue CreateValue (object value) {
 164                         if (value == null)
 165                                 return new PrimitiveValue (vm, null);
 166
 167                         if (!value.GetType ().IsPrimitive)
 168                                 throw new ArgumentException ("value must be of a primitive type instead of '" + value.GetType () + "'", "value");
 169
 170                         return new PrimitiveValue (vm, value);
 171                 }
 172
 173                 public EnumMirror CreateEnumMirror (TypeMirror type, PrimitiveValue value) {
 174                         return new EnumMirror (this, type, value);
 175                 }
 176
 177                 //
 178                 // Enable send and receive timeouts on the connection and send a keepalive event
 179                 // every 'keepalive_interval' milliseconds.
 180                 //
 181
 182                 public void SetSocketTimeouts (int send_timeout, int receive_timeout, int keepalive_interval)
 183                 {
 184                         conn.SetSocketTimeouts (send_timeout, receive_timeout, keepalive_interval);
 185                 }
 186
 187                 //
 188                 // Methods to create event request objects
 189                 //
 190                 public BreakpointEventRequest CreateBreakpointRequest (MethodMirror method, long il_offset) {
 191                         return new BreakpointEventRequest (this, method, il_offset);
 192                 }
 193
 194                 public BreakpointEventRequest CreateBreakpointRequest (Location loc) {
 195                         if (loc == null)
 196                                 throw new ArgumentNullException ("loc");
 197                         CheckMirror (loc);
 198                         return new BreakpointEventRequest (this, loc.Method, loc.ILOffset);
 199                 }
 200
 201                 public StepEventRequest CreateStepRequest (ThreadMirror thread) {
 202                         return new StepEventRequest (this, thread);
 203                 }
 204
 205                 public MethodEntryEventRequest CreateMethodEntryRequest () {
 206                         return new MethodEntryEventRequest (this);
 207                 }
 208
 209                 public MethodExitEventRequest CreateMethodExitRequest () {
 210                         return new MethodExitEventRequest (this);
 211                 }
 212
 213                 public ExceptionEventRequest CreateExceptionRequest (TypeMirror exc_type) {
 214                         return new ExceptionEventRequest (this, exc_type, true, true);
 215                 }
 216
 217                 public ExceptionEventRequest CreateExceptionRequest (TypeMirror exc_type, bool caught, bool uncaught) {
 218                         return new ExceptionEventRequest (this, exc_type, caught, uncaught);
 219                 }
 220
 221                 public AssemblyLoadEventRequest CreateAssemblyLoadRequest () {
 222                         return new AssemblyLoadEventRequest (this);
 223                 }
 224
 225                 public TypeLoadEventRequest CreateTypeLoadRequest () {
 226                         return new TypeLoadEventRequest (this);
 227                 }
 228
 229                 public void EnableEvents (params EventType[] events) {
 230                         foreach (EventType etype in events) {
 231                                 if (etype == EventType.Breakpoint)
 232                                         throw new ArgumentException ("Breakpoint events cannot be requested using EnableEvents", "events");
 233                                 conn.EnableEvent (etype, SuspendPolicy.All, null);
 234                         }
 235                 }
 236
 237                 public BreakpointEventRequest SetBreakpoint (MethodMirror method, long il_offset) {
 238                         BreakpointEventRequest req = CreateBreakpointRequest (method, il_offset);
 239
 240                         req.Enable ();
 241
 242                         return req;
 243                 }
 244
 245                 public void ClearAllBreakpoints () {
 246                         conn.ClearAllBreakpoints ();
 247                 }
 248
 249                 public void Disconnect () {
 250                         conn.Close ();
 251                 }
 252
 253                 //
 254                 // Return a list of TypeMirror objects for all loaded types which reference the
 255                 // source file FNAME. Might return false positives.
 256                 // Since protocol version 2.7.
 257                 //
 258                 public IList<TypeMirror> GetTypesForSourceFile (string fname, bool ignoreCase) {
 259                         long[] ids = conn.VM_GetTypesForSourceFile (fname, ignoreCase);
 260                         var res = new TypeMirror [ids.Length];
 261                         for (int i = 0; i < ids.Length; ++i)
 262                                 res [i] = GetType (ids [i]);
 263                         return res;
 264                 }
 265
 266                 //
 267                 // Return a list of TypeMirror objects for all loaded types named 'NAME'.
 268                 // NAME should be in the the same for as with Assembly.GetType ().
 269                 // Since protocol version 2.9.
 270                 //
 271                 public IList<TypeMirror> GetTypes (string name, bool ignoreCase) {
 272                         long[] ids = conn.VM_GetTypes (name, ignoreCase);
 273                         var res = new TypeMirror [ids.Length];
 274                         for (int i = 0; i < ids.Length; ++i)
 275                                 res [i] = GetType (ids [i]);
 276                         return res;
 277                 }
 278
 279                 internal void queue_event_set (EventSet es) {
 280                         lock (queue_monitor) {
 281                                 queue.Enqueue (es);
 282                                 Monitor.Pulse (queue_monitor);
 283                         }
 284                 }
 285
 286                 internal void ErrorHandler (object sender, ErrorHandlerEventArgs args) {
 287                         switch (args.ErrorCode) {
 288                         case ErrorCode.INVALID_OBJECT:
 289                                 throw new ObjectCollectedException ();
 290                         case ErrorCode.INVALID_FRAMEID:
 291                                 throw new InvalidStackFrameException ();
 292                         case ErrorCode.NOT_SUSPENDED:
 293                                 throw new InvalidOperationException ("The vm is not suspended.");
 294                         case ErrorCode.NOT_IMPLEMENTED:
 295                                 throw new NotSupportedException ("This request is not supported by the protocol version implemented by the debuggee.");
 296                         case ErrorCode.ABSENT_INFORMATION:
 297                                 throw new AbsentInformationException ();
 298                         case ErrorCode.NO_SEQ_POINT_AT_IL_OFFSET:
 299                                 throw new ArgumentException ("Cannot set breakpoint on the specified IL offset.");
 300                         default:
 301                                 throw new CommandException (args.ErrorCode);
 302                         }
 303                 }
 304
 305                 /* Wait for the debuggee to start up and connect to it */
 306                 internal void connect () {
 307                         conn.Connect ();
 308
 309                         // Test the connection
 310                         version = conn.Version;
 311                         if (version.MajorVersion != Connection.MAJOR_VERSION)
 312                                 throw new NotSupportedException (String.Format ("The debuggee implements protocol version {0}.{1}, while {2}.{3} is required.", version.MajorVersion, version.MinorVersion, Connection.MAJOR_VERSION, Connection.MINOR_VERSION));
 313
 314                         long root_domain_id = conn.RootDomain;
 315                         root_domain = GetDomain (root_domain_id);
 316                 }
 317
 318                 internal void notify_vm_event (EventType evtype, SuspendPolicy spolicy, int req_id, long thread_id, string vm_uri) {
 319                         //Console.WriteLine ("Event: " + evtype + "(" + vm_uri + ")");
 320
 321                         switch (evtype) {
 322                         case EventType.VMStart:
 323                                 /* Notify the main thread that the debuggee started up */
 324                                 lock (startup_monitor) {
 325                                         Monitor.Pulse (startup_monitor);
 326                                 }
 327                                 queue_event_set (new EventSet (this, spolicy, new Event[] { new VMStartEvent (vm, req_id, thread_id) }));
 328                                 break;
 329                         case EventType.VMDeath:
 330                                 queue_event_set (new EventSet (this, spolicy, new Event[] { new VMDeathEvent (vm, req_id) }));
 331                                 break;
 332                         case EventType.VMDisconnect:
 333                                 queue_event_set (new EventSet (this, spolicy, new Event[] { new VMDisconnectEvent (vm, req_id) }));
 334                                 break;
 335                         default:
 336                                 throw new Exception ();
 337                         }
 338                 }
 339
 340                 //
 341                 // Methods to create instances of mirror objects
 342                 //
 343
 344                 /*
 345                 class MirrorCache<T> {
 346                         static Dictionary <long, T> mirrors;
 347                         static object mirror_lock = new object ();
 348
 349                         internal static T GetMirror (VirtualMachine vm, long id) {
 350                                 lock (mirror_lock) {
 351                                 if (mirrors == null)
 352                                         mirrors = new Dictionary <long, T> ();
 353                                 T obj;
 354                                 if (!mirrors.TryGetValue (id, out obj)) {
 355                                         obj = CreateMirror (vm, id);
 356                                         mirrors [id] = obj;
 357                                 }
 358                                 return obj;
 359                                 }
 360                         }
 361
 362                         internal static T CreateMirror (VirtualMachine vm, long id) {
 363                         }
 364                 }
 365                 */
 366
 367                 // FIXME: When to remove items from the cache ?
 368
 369                 Dictionary <long, MethodMirror> methods;
 370                 object methods_lock = new object ();
 371
 372                 internal MethodMirror GetMethod (long id) {
 373                         lock (methods_lock) {
 374                                 if (methods == null)
 375                                         methods = new Dictionary <long, MethodMirror> ();
 376                                 MethodMirror obj;
 377                                 if (id == 0)
 378                                         return null;
 379                                 if (!methods.TryGetValue (id, out obj)) {
 380                                         obj = new MethodMirror (this, id);
 381                                         methods [id] = obj;
 382                                 }
 383                                 return obj;
 384                         }
 385             }
 386
 387                 Dictionary <long, AssemblyMirror> assemblies;
 388                 object assemblies_lock = new object ();
 389
 390                 internal AssemblyMirror GetAssembly (long id) {
 391                         lock (assemblies_lock) {
 392                                 if (assemblies == null)
 393                                         assemblies = new Dictionary <long, AssemblyMirror> ();
 394                                 AssemblyMirror obj;
 395                                 if (id == 0)
 396                                         return null;
 397                                 if (!assemblies.TryGetValue (id, out obj)) {
 398                                         obj = new AssemblyMirror (this, id);
 399                                         assemblies [id] = obj;
 400                                 }
 401                                 return obj;
 402                         }
 403             }
 404
 405                 Dictionary <long, ModuleMirror> modules;
 406                 object modules_lock = new object ();
 407
 408                 internal ModuleMirror GetModule (long id) {
 409                         lock (modules_lock) {
 410                                 if (modules == null)
 411                                         modules = new Dictionary <long, ModuleMirror> ();
 412                                 ModuleMirror obj;
 413                                 if (id == 0)
 414                                         return null;
 415                                 if (!modules.TryGetValue (id, out obj)) {
 416                                         obj = new ModuleMirror (this, id);
 417                                         modules [id] = obj;
 418                                 }
 419                                 return obj;
 420                         }
 421             }
 422
 423                 Dictionary <long, AppDomainMirror> domains;
 424                 object domains_lock = new object ();
 425
 426                 internal AppDomainMirror GetDomain (long id) {
 427                         lock (domains_lock) {
 428                                 if (domains == null)
 429                                         domains = new Dictionary <long, AppDomainMirror> ();
 430                                 AppDomainMirror obj;
 431                                 if (id == 0)
 432                                         return null;
 433                                 if (!domains.TryGetValue (id, out obj)) {
 434                                         obj = new AppDomainMirror (this, id);
 435                                         domains [id] = obj;
 436                                 }
 437                                 return obj;
 438                         }
 439             }
 440
 441                 Dictionary <long, TypeMirror> types;
 442                 object types_lock = new object ();
 443
 444                 internal TypeMirror GetType (long id) {
 445                         lock (types_lock) {
 446                                 if (types == null)
 447                                         types = new Dictionary <long, TypeMirror> ();
 448                                 TypeMirror obj;
 449                                 if (id == 0)
 450                                         return null;
 451                                 if (!types.TryGetValue (id, out obj)) {
 452                                         obj = new TypeMirror (this, id);
 453                                         types [id] = obj;
 454                                 }
 455                                 return obj;
 456                         }
 457             }
 458
 459                 internal TypeMirror[] GetTypes (long[] ids) {
 460                         var res = new TypeMirror [ids.Length];
 461                         for (int i = 0; i < ids.Length; ++i)
 462                                 res [i] = GetType (ids [i]);
 463                         return res;
 464                 }
 465
 466                 Dictionary <long, ObjectMirror> objects;
 467                 object objects_lock = new object ();
 468
 469                 internal T GetObject<T> (long id, long domain_id, long type_id) where T : ObjectMirror {
 470                         lock (objects_lock) {
 471                                 if (objects == null)
 472                                         objects = new Dictionary <long, ObjectMirror> ();
 473                                 ObjectMirror obj;
 474                                 if (!objects.TryGetValue (id, out obj)) {
 475                                         /*
 476                                          * Obtain the domain/type of the object to determine the type of
 477                                          * object we need to create.
 478                                          */
 479                                         if (domain_id == 0 || type_id == 0) {
 480                                                 if (conn.Version.AtLeast (2, 5)) {
 481                                                         var info = conn.Object_GetInfo (id);
 482                                                         domain_id = info.domain_id;
 483                                                         type_id = info.type_id;
 484                                                 } else {
 485                                                         if (domain_id == 0)
 486                                                                 domain_id = conn.Object_GetDomain (id);
 487                                                         if (type_id == 0)
 488                                                                 type_id = conn.Object_GetType (id);
 489                                                 }
 490                                         }
 491                                         AppDomainMirror d = GetDomain (domain_id);
 492                                         TypeMirror t = GetType (type_id);
 493
 494                                         if (t.Assembly == d.Corlib && t.Namespace == "System.Threading" && t.Name == "Thread")
 495                                                 obj = new ThreadMirror (this, id, t, d);
 496                                         else if (t.Assembly == d.Corlib && t.Namespace == "System" && t.Name == "String")
 497                                                 obj = new StringMirror (this, id, t, d);
 498                                         else if (typeof (T) == typeof (ArrayMirror))
 499                                                 obj = new ArrayMirror (this, id, t, d);
 500                                         else
 501                                                 obj = new ObjectMirror (this, id, t, d);
 502                                         objects [id] = obj;
 503                                 }
 504                                 return (T)obj;
 505                         }
 506             }
 507
 508                 internal T GetObject<T> (long id) where T : ObjectMirror {
 509                         return GetObject<T> (id, 0, 0);
 510                 }
 511
 512                 internal ObjectMirror GetObject (long objid) {
 513                         return GetObject<ObjectMirror> (objid);
 514                 }
 515
 516                 internal ThreadMirror GetThread (long id) {
 517                         return GetObject <ThreadMirror> (id);
 518                 }
 519
 520                 object requests_lock = new object ();
 521
 522                 internal void AddRequest (EventRequest req, int id) {
 523                         lock (requests_lock) {
 524                                 requests [id] = req;
 525                         }
 526                 }
 527
 528                 internal void RemoveRequest (EventRequest req, int id) {
 529                         lock (requests_lock) {
 530                                 requests.Remove (id);
 531                         }
 532                 }
 533
 534                 internal EventRequest GetRequest (int id) {
 535                         lock (requests_lock) {
 536                                 return requests [id];
 537                         }
 538                 }
 539
 540                 internal Value DecodeValue (ValueImpl v) {
 541                         if (v.Value != null)
 542                                 return new PrimitiveValue (this, v.Value);
 543
 544                         switch (v.Type) {
 545                         case ElementType.Void:
 546                                 return null;
 547                         case ElementType.SzArray:
 548                         case ElementType.Array:
 549                                 return GetObject<ArrayMirror> (v.Objid);
 550                         case ElementType.String:
 551                                 return GetObject<StringMirror> (v.Objid);
 552                         case ElementType.Class:
 553                         case ElementType.Object:
 554                                 return GetObject (v.Objid);
 555                         case ElementType.ValueType:
 556                                 if (v.IsEnum)
 557                                         return new EnumMirror (this, GetType (v.Klass), DecodeValues (v.Fields));
 558                                 else
 559                                         return new StructMirror (this, GetType (v.Klass), DecodeValues (v.Fields));
 560                         case (ElementType)ValueTypeId.VALUE_TYPE_ID_NULL:
 561                                 return new PrimitiveValue (this, null);
 562                         default:
 563                                 throw new NotImplementedException ("" + v.Type);
 564                         }
 565                 }
 566
 567                 internal Value[] DecodeValues (ValueImpl[] values) {
 568                         Value[] res = new Value [values.Length];
 569                         for (int i = 0; i < values.Length; ++i)
 570                                 res [i] = DecodeValue (values [i]);
 571                         return res;
 572                 }
 573
 574                 internal ValueImpl EncodeValue (Value v) {
 575                         if (v is PrimitiveValue) {
 576                                 object val = (v as PrimitiveValue).Value;
 577                                 if (val == null)
 578                                         return new ValueImpl { Type = (ElementType)ValueTypeId.VALUE_TYPE_ID_NULL, Objid = 0 };
 579                                 else
 580                                         return new ValueImpl { Value = val };
 581                         } else if (v is ObjectMirror) {
 582                                 return new ValueImpl { Type = ElementType.Object, Objid = (v as ObjectMirror).Id };
 583                         } else if (v is StructMirror) {
 584                                 return new ValueImpl { Type = ElementType.ValueType, Klass = (v as StructMirror).Type.Id, Fields = EncodeValues ((v as StructMirror).Fields) };
 585                         } else {
 586                                 throw new NotSupportedException ();
 587                         }
 588                 }
 589
 590                 internal ValueImpl[] EncodeValues (IList<Value> values) {
 591                         ValueImpl[] res = new ValueImpl [values.Count];
 592                         for (int i = 0; i < values.Count; ++i)
 593                                 res [i] = EncodeValue (values [i]);
 594                         return res;
 595                 }
 596
 597                 internal void CheckProtocolVersion (int major, int minor) {
 598                         if (!conn.Version.AtLeast (major, minor))
 599                                 throw new NotSupportedException ("This request is not supported by the protocol version implemented by the debuggee.");
 600                 }
 601     }
 602
 603         class EventHandler : MarshalByRefObject, IEventHandler
 604         {
 605                 VirtualMachine vm;
 606
 607                 public EventHandler (VirtualMachine vm) {
 608                         this.vm = vm;
 609                 }
 610
 611                 public void Events (SuspendPolicy suspend_policy, EventInfo[] events) {
 612                         var l = new List<Event> ();
 613
 614                         for (int i = 0; i < events.Length; ++i) {
 615                                 EventInfo ei = events [i];
 616                                 int req_id = ei.ReqId;
 617                                 long thread_id = ei.ThreadId;
 618                                 long id = ei.Id;
 619                                 long loc = ei.Location;
 620
 621                                 switch (ei.EventType) {
 622                                 case EventType.VMStart:
 623                                         vm.notify_vm_event (EventType.VMStart, suspend_policy, req_id, thread_id, null);
 624                                         break;
 625                                 case EventType.VMDeath:
 626                                         vm.notify_vm_event (EventType.VMDeath, suspend_policy, req_id, thread_id, null);
 627                                         break;
 628                                 case EventType.ThreadStart:
 629                                         l.Add (new ThreadStartEvent (vm, req_id, id));
 630                                         break;
 631                                 case EventType.ThreadDeath:
 632                                         l.Add (new ThreadDeathEvent (vm, req_id, id));
 633                                         break;
 634                                 case EventType.AssemblyLoad:
 635                                         l.Add (new AssemblyLoadEvent (vm, req_id, thread_id, id));
 636                                         break;
 637                                 case EventType.AssemblyUnload:
 638                                         l.Add (new AssemblyUnloadEvent (vm, req_id, thread_id, id));
 639                                         break;
 640                                 case EventType.TypeLoad:
 641                                         l.Add (new TypeLoadEvent (vm, req_id, thread_id, id));
 642                                         break;
 643                                 case EventType.MethodEntry:
 644                                         l.Add (new MethodEntryEvent (vm, req_id, thread_id, id));
 645                                         break;
 646                                 case EventType.MethodExit:
 647                                         l.Add (new MethodExitEvent (vm, req_id, thread_id, id));
 648                                         break;
 649                                 case EventType.Breakpoint:
 650                                         l.Add (new BreakpointEvent (vm, req_id, thread_id, id, loc));
 651                                         break;
 652                                 case EventType.Step:
 653                                         l.Add (new StepEvent (vm, req_id, thread_id, id, loc));
 654                                         break;
 655                                 case EventType.Exception:
 656                                         l.Add (new ExceptionEvent (vm, req_id, thread_id, id, loc));
 657                                         break;
 658                                 case EventType.AppDomainCreate:
 659                                         l.Add (new AppDomainCreateEvent (vm, req_id, thread_id, id));
 660                                         break;
 661                                 case EventType.AppDomainUnload:
 662                                         l.Add (new AppDomainUnloadEvent (vm, req_id, thread_id, id));
 663                                         break;
 664                                 case EventType.UserBreak:
 665                                         l.Add (new UserBreakEvent (vm, req_id, thread_id));
 666                                         break;
 667                                 case EventType.UserLog:
 668                                         l.Add (new UserLogEvent (vm, req_id, thread_id, ei.Level, ei.Category, ei.Message));
 669                                         break;
 670                                 default:
 671                                         break;
 672                                 }
 673                         }
 674
 675                         if (l.Count > 0)
 676                                 vm.queue_event_set (new EventSet (vm, suspend_policy, l.ToArray ()));
 677                 }
 678
 679                 public void VMDisconnect (int req_id, long thread_id, string vm_uri) {
 680                         vm.notify_vm_event (EventType.VMDisconnect, SuspendPolicy.None, req_id, thread_id, vm_uri);
 681         }
 682     }
 683
 684         public class CommandException : Exception {
 685
 686                 internal CommandException (ErrorCode error_code) : base ("Debuggee returned error code " + error_code + ".") {
 687                         ErrorCode = error_code;
 688                 }
 689
 690                 public ErrorCode ErrorCode {
 691                         get; set;
 692                 }
 693         }
 694 }