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

   1 using System;
   2 using System.IO;
   3 using System.Net;
   4 using System.Net.Sockets;
   5 using System.Threading;
   6 using System.Collections.Generic;
   7 using System.Text;
   8 using System.Diagnostics;
   9 using Mono.Cecil.Metadata;
  10
  11 namespace Mono.Debugger.Soft
  12 {
  13         public class VersionInfo {
  14                 public string VMVersion {
  15                         get; set;
  16                 }
  17
  18                 public int MajorVersion {
  19                         get; set;
  20                 }
  21
  22                 public int MinorVersion {
  23                         get; set;
  24                 }
  25
  26                 /*
  27                  * Check that this version is at least major:minor
  28                  */
  29                 public bool AtLeast (int major, int minor) {
  30                         if ((MajorVersion > major) || ((MajorVersion == major && MinorVersion >= minor)))
  31                                 return true;
  32                         else
  33                                 return false;
  34                 }
  35         }
  36
  37         struct SourceInfo {
  38                 public string source_file;
  39                 public byte[] guid, hash;
  40         }
  41
  42         class DebugInfo {
  43                 public int max_il_offset;
  44                 public int[] il_offsets;
  45                 public int[] line_numbers;
  46                 public int[] column_numbers;
  47                 public int[] end_line_numbers;
  48                 public int[] end_column_numbers;
  49                 public SourceInfo[] source_files;
  50         }
  51
  52         struct FrameInfo {
  53                 public long id;
  54                 public long method;
  55                 public int il_offset;
  56                 public StackFrameFlags flags;
  57         }
  58
  59         class TypeInfo {
  60                 public string ns, name, full_name;
  61                 public long assembly, module, base_type, element_type;
  62                 public int token, rank, attributes;
  63                 public bool is_byref, is_pointer, is_primitive, is_valuetype, is_enum;
  64                 public bool is_gtd, is_generic_type;
  65                 public long[] nested;
  66                 public long gtd;
  67                 public long[] type_args;
  68         }
  69
  70         struct IfaceMapInfo {
  71                 public long iface_id;
  72                 public long[] iface_methods;
  73                 public long[] target_methods;
  74         }
  75
  76         class MethodInfo {
  77                 public int attributes, iattributes, token;
  78                 public bool is_gmd, is_generic_method;
  79                 public long gmd;
  80                 public long[] type_args;
  81         }
  82
  83         class MethodBodyInfo {
  84                 public byte[] il;
  85                 public ExceptionClauseInfo[] clauses;
  86         }
  87
  88         struct ExceptionClauseInfo {
  89                 public ExceptionClauseFlags flags;
  90                 public int try_offset;
  91                 public int try_length;
  92                 public int handler_offset;
  93                 public int handler_length;
  94                 public int filter_offset;
  95                 public long catch_type_id;
  96         }
  97
  98         [Flags]
  99         enum ExceptionClauseFlags {
 100                 None = 0x0,
 101                 Filter = 0x1,
 102                 Finally = 0x2,
 103                 Fault = 0x4,
 104         }
 105
 106         struct ParamInfo {
 107                 public int call_conv;
 108                 public int param_count;
 109                 public int generic_param_count;
 110                 public long ret_type;
 111                 public long[] param_types;
 112                 public string[] param_names;
 113         }
 114
 115         struct LocalsInfo {
 116                 public long[] types;
 117                 public string[] names;
 118                 public int[] live_range_start;
 119                 public int[] live_range_end;
 120         }
 121
 122         struct PropInfo {
 123                 public long id;
 124                 public string name;
 125                 public long get_method, set_method;
 126                 public int attrs;
 127         }
 128
 129         class CattrNamedArgInfo {
 130                 public bool is_property;
 131                 public long id;
 132                 public ValueImpl value;
 133         }
 134
 135         class CattrInfo {
 136                 public long ctor_id;
 137                 public ValueImpl[] ctor_args;
 138                 public CattrNamedArgInfo[] named_args;
 139         }
 140
 141         class ThreadInfo {
 142                 public bool is_thread_pool;
 143         }
 144
 145         struct ObjectRefInfo {
 146                 public long type_id;
 147                 public long domain_id;
 148         }
 149
 150         enum ValueTypeId {
 151                 VALUE_TYPE_ID_NULL = 0xf0,
 152                 VALUE_TYPE_ID_TYPE = 0xf1,
 153                 VALUE_TYPE_ID_PARENT_VTYPE = 0xf2
 154         }
 155
 156         [Flags]
 157         enum InvokeFlags {
 158                 NONE = 0,
 159                 DISABLE_BREAKPOINTS = 1,
 160                 SINGLE_THREADED = 2,
 161                 OUT_THIS = 4,
 162                 OUT_ARGS = 8,
 163                 VIRTUAL = 16,
 164         }
 165
 166         enum ElementType {
 167                 End              = 0x00,
 168                 Void            = 0x01,
 169                 Boolean  = 0x02,
 170                 Char            = 0x03,
 171                 I1                = 0x04,
 172                 U1                = 0x05,
 173                 I2                = 0x06,
 174                 U2                = 0x07,
 175                 I4                = 0x08,
 176                 U4                = 0x09,
 177                 I8                = 0x0a,
 178                 U8                = 0x0b,
 179                 R4                = 0x0c,
 180                 R8                = 0x0d,
 181                 String    = 0x0e,
 182                 Ptr              = 0x0f,
 183                 ByRef      = 0x10,
 184                 ValueType   = 0x11,
 185                 Class      = 0x12,
 186                 Var        = 0x13,
 187                 Array      = 0x14,
 188                 GenericInst = 0x15,
 189                 TypedByRef  = 0x16,
 190                 I                  = 0x18,
 191                 U                  = 0x19,
 192                 FnPtr      = 0x1b,
 193                 Object    = 0x1c,
 194                 SzArray  = 0x1d,
 195                 MVar       = 0x1e,
 196                 CModReqD        = 0x1f,
 197                 CModOpt  = 0x20,
 198                 Internal        = 0x21,
 199                 Modifier        = 0x40,
 200                 Sentinel        = 0x41,
 201                 Pinned    = 0x45,
 202
 203                 Type            = 0x50,
 204                 Boxed      = 0x51,
 205                 Enum            = 0x55
 206         }
 207
 208         class ValueImpl {
 209                 public ElementType Type; /* or one of the VALUE_TYPE_ID constants */
 210                 public long Objid;
 211                 public object Value;
 212                 public long Klass; // For ElementType.ValueType
 213                 public ValueImpl[] Fields; // for ElementType.ValueType
 214                 public bool IsEnum; // For ElementType.ValueType
 215                 public long Id; /* For VALUE_TYPE_ID_TYPE */
 216                 public int Index; /* For VALUE_TYPE_PARENT_VTYPE */
 217         }
 218
 219         class ModuleInfo {
 220                 public string Name, ScopeName, FQName, Guid;
 221                 public long Assembly;
 222         }
 223
 224         class FieldMirrorInfo {
 225                 public string Name;
 226                 public long Parent, TypeId;
 227                 public int Attrs;
 228         }
 229
 230         enum TokenType {
 231                 STRING = 0,
 232                 TYPE = 1,
 233                 FIELD = 2,
 234                 METHOD = 3,
 235                 UNKNOWN = 4
 236         }
 237
 238         [Flags]
 239         enum StackFrameFlags {
 240                 NONE = 0,
 241                 DEBUGGER_INVOKE = 1,
 242                 NATIVE_TRANSITION = 2
 243         }
 244
 245         class ResolvedToken {
 246                 public TokenType Type;
 247                 public string Str;
 248                 public long Id;
 249         }
 250
 251         class Modifier {
 252         }
 253
 254         class CountModifier : Modifier {
 255                 public int Count {
 256                         get; set;
 257                 }
 258         }
 259
 260         class LocationModifier : Modifier {
 261                 public long Method {
 262                         get; set;
 263                 }
 264
 265                 public long Location {
 266                         get; set;
 267                 }
 268         }
 269
 270         class StepModifier : Modifier {
 271                 public long Thread {
 272                         get; set;
 273                 }
 274
 275                 public int Depth {
 276                         get; set;
 277                 }
 278
 279                 public int Size {
 280                         get; set;
 281                 }
 282
 283                 public int Filter {
 284                         get; set;
 285                 }
 286         }
 287
 288         class ThreadModifier : Modifier {
 289                 public long Thread {
 290                         get; set;
 291                 }
 292         }
 293
 294         class ExceptionModifier : Modifier {
 295                 public long Type {
 296                         get; set;
 297                 }
 298                 public bool Caught {
 299                         get; set;
 300                 }
 301                 public bool Uncaught {
 302                         get; set;
 303                 }
 304                 public bool Subclasses {
 305                         get; set;
 306                 }
 307         }
 308
 309         class AssemblyModifier : Modifier {
 310                 public long[] Assemblies {
 311                         get; set;
 312                 }
 313         }
 314
 315         class SourceFileModifier : Modifier {
 316                 public string[] SourceFiles {
 317                         get; set;
 318                 }
 319         }
 320
 321         class TypeNameModifier : Modifier {
 322                 public string[] TypeNames {
 323                         get; set;
 324                 }
 325         }
 326
 327         class EventInfo {
 328                 public EventType EventType {
 329                         get; set;
 330                 }
 331
 332                 public int ReqId {
 333                         get; set;
 334                 }
 335
 336                 public SuspendPolicy SuspendPolicy {
 337                         get; set;
 338                 }
 339
 340                 public long ThreadId {
 341                         get; set;
 342                 }
 343
 344                 public long Id {
 345                         get; set;
 346                 }
 347
 348                 public long Location {
 349                         get; set;
 350                 }
 351
 352                 public int Level {
 353                         get; set;
 354                 }
 355
 356                 public string Category {
 357                         get; set;
 358                 }
 359
 360                 public string Message {
 361                         get; set;
 362                 }
 363
 364                 public int ExitCode {
 365                         get; set;
 366                 }
 367
 368                 public EventInfo (EventType type, int req_id) {
 369                         EventType = type;
 370                         ReqId = req_id;
 371                 }
 372         }
 373
 374         public enum ErrorCode {
 375                 NONE = 0,
 376                 INVALID_OBJECT = 20,
 377                 INVALID_FIELDID = 25,
 378                 INVALID_FRAMEID = 30,
 379                 NOT_IMPLEMENTED = 100,
 380                 NOT_SUSPENDED = 101,
 381                 INVALID_ARGUMENT = 102,
 382                 ERR_UNLOADED = 103,
 383                 ERR_NO_INVOCATION = 104,
 384                 ABSENT_INFORMATION = 105,
 385                 NO_SEQ_POINT_AT_IL_OFFSET = 106
 386         }
 387
 388         public class ErrorHandlerEventArgs : EventArgs {
 389
 390                 public ErrorCode ErrorCode {
 391                         get; set;
 392                 }
 393         }
 394
 395         /*
 396          * Represents the connection to the debuggee
 397          */
 398         public abstract class Connection
 399         {
 400                 /*
 401                  * The protocol and the packet format is based on JDWP, the differences
 402                  * are in the set of supported events, and the commands.
 403                  */
 404                 internal const string HANDSHAKE_STRING = "DWP-Handshake";
 405
 406                 internal const int HEADER_LENGTH = 11;
 407
 408                 static readonly bool EnableConnectionLogging = !String.IsNullOrEmpty (Environment.GetEnvironmentVariable ("MONO_SDB_LOG"));
 409                 static int ConnectionId;
 410                 readonly StreamWriter LoggingStream;
 411
 412                 /*
 413                  * Th version of the wire-protocol implemented by the library. The library
 414                  * and the debuggee can communicate if they implement the same major version.
 415                  * If they implement a different minor version, they can communicate, but some
 416                  * features might not be available. This allows older clients to communicate
 417                  * with newer runtimes, and vice versa.
 418                  */
 419                 internal const int MAJOR_VERSION = 2;
 420                 internal const int MINOR_VERSION = 38;
 421
 422                 enum WPSuspendPolicy {
 423                         NONE = 0,
 424                         EVENT_THREAD = 1,
 425                         ALL = 2
 426                 }
 427
 428                 enum CommandSet {
 429                         VM = 1,
 430                         OBJECT_REF = 9,
 431                         STRING_REF = 10,
 432                         THREAD = 11,
 433                         ARRAY_REF = 13,
 434                         EVENT_REQUEST = 15,
 435                         STACK_FRAME = 16,
 436                         APPDOMAIN = 20,
 437                         ASSEMBLY = 21,
 438                         METHOD = 22,
 439                         TYPE = 23,
 440                         MODULE = 24,
 441                         FIELD = 25,
 442                         EVENT = 64
 443                 }
 444
 445                 enum EventKind {
 446                         VM_START = 0,
 447                         VM_DEATH = 1,
 448                         THREAD_START = 2,
 449                         THREAD_DEATH = 3,
 450                         APPDOMAIN_CREATE = 4, // Not in JDI
 451                         APPDOMAIN_UNLOAD = 5, // Not in JDI
 452                         METHOD_ENTRY = 6,
 453                         METHOD_EXIT = 7,
 454                         ASSEMBLY_LOAD = 8,
 455                         ASSEMBLY_UNLOAD = 9,
 456                         BREAKPOINT = 10,
 457                         STEP = 11,
 458                         TYPE_LOAD = 12,
 459                         EXCEPTION = 13,
 460                         KEEPALIVE = 14,
 461                         USER_BREAK = 15,
 462                         USER_LOG = 16
 463                 }
 464
 465                 enum ModifierKind {
 466                         COUNT = 1,
 467                         THREAD_ONLY = 3,
 468                         LOCATION_ONLY = 7,
 469                         EXCEPTION_ONLY = 8,
 470                         STEP = 10,
 471                         ASSEMBLY_ONLY = 11,
 472                         SOURCE_FILE_ONLY = 12,
 473                         TYPE_NAME_ONLY = 13
 474                 }
 475
 476                 enum CmdVM {
 477                         VERSION = 1,
 478                         ALL_THREADS = 2,
 479                         SUSPEND = 3,
 480                         RESUME = 4,
 481                         EXIT = 5,
 482                         DISPOSE = 6,
 483                         INVOKE_METHOD = 7,
 484                         SET_PROTOCOL_VERSION = 8,
 485                         ABORT_INVOKE = 9,
 486                         SET_KEEPALIVE = 10,
 487                         GET_TYPES_FOR_SOURCE_FILE = 11,
 488                         GET_TYPES = 12,
 489                         INVOKE_METHODS = 13,
 490                         START_BUFFERING = 14,
 491                         STOP_BUFFERING = 15
 492                 }
 493
 494                 enum CmdEvent {
 495                         COMPOSITE = 100
 496                 }
 497
 498                 enum CmdThread {
 499                         GET_FRAME_INFO = 1,
 500                         GET_NAME = 2,
 501                         GET_STATE = 3,
 502                         GET_INFO = 4,
 503                         /* FIXME: Merge into GET_INFO when the major protocol version is increased */
 504                         GET_ID = 5,
 505                         /* Ditto */
 506                         GET_TID = 6,
 507                         SET_IP = 7
 508                 }
 509
 510                 enum CmdEventRequest {
 511                         SET = 1,
 512                         CLEAR = 2,
 513                         CLEAR_ALL_BREAKPOINTS = 3
 514                 }
 515
 516                 enum CmdAppDomain {
 517                         GET_ROOT_DOMAIN = 1,
 518                         GET_FRIENDLY_NAME = 2,
 519                         GET_ASSEMBLIES = 3,
 520                         GET_ENTRY_ASSEMBLY = 4,
 521                         CREATE_STRING = 5,
 522                         GET_CORLIB = 6,
 523                         CREATE_BOXED_VALUE = 7
 524                 }
 525
 526                 enum CmdAssembly {
 527                         GET_LOCATION = 1,
 528                         GET_ENTRY_POINT = 2,
 529                         GET_MANIFEST_MODULE = 3,
 530                         GET_OBJECT = 4,
 531                         GET_TYPE = 5,
 532                         GET_NAME = 6
 533                 }
 534
 535                 enum CmdModule {
 536                         GET_INFO = 1,
 537                 }
 538
 539                 enum CmdMethod {
 540                         GET_NAME = 1,
 541                         GET_DECLARING_TYPE = 2,
 542                         GET_DEBUG_INFO = 3,
 543                         GET_PARAM_INFO = 4,
 544                         GET_LOCALS_INFO = 5,
 545                         GET_INFO = 6,
 546                         GET_BODY = 7,
 547                         RESOLVE_TOKEN = 8,
 548                         GET_CATTRS = 9,
 549                         MAKE_GENERIC_METHOD = 10
 550                 }
 551
 552                 enum CmdType {
 553                         GET_INFO = 1,
 554                         GET_METHODS = 2,
 555                         GET_FIELDS = 3,
 556                         GET_VALUES = 4,
 557                         GET_OBJECT = 5,
 558                         GET_SOURCE_FILES = 6,
 559                         SET_VALUES = 7,
 560                         IS_ASSIGNABLE_FROM = 8,
 561                         GET_PROPERTIES = 9,
 562                         GET_CATTRS = 10,
 563                         GET_FIELD_CATTRS = 11,
 564                         GET_PROPERTY_CATTRS = 12,
 565                         /* FIXME: Merge into GET_SOURCE_FILES when the major protocol version is increased */
 566                         GET_SOURCE_FILES_2 = 13,
 567                         /* FIXME: Merge into GET_VALUES when the major protocol version is increased */
 568                         GET_VALUES_2 = 14,
 569                         CMD_TYPE_GET_METHODS_BY_NAME_FLAGS = 15,
 570                         GET_INTERFACES = 16,
 571                         GET_INTERFACE_MAP = 17,
 572                         IS_INITIALIZED = 18,
 573                         CREATE_INSTANCE = 19
 574                 }
 575
 576                 enum CmdField {
 577                         GET_INFO = 1
 578                 }
 579
 580                 [Flags]
 581                 enum BindingFlagsExtensions {
 582                         BINDING_FLAGS_IGNORE_CASE = 0x70000000,
 583                 }
 584
 585                 enum CmdStackFrame {
 586                         GET_VALUES = 1,
 587                         GET_THIS = 2,
 588                         SET_VALUES = 3,
 589                         GET_DOMAIN = 4,
 590                 }
 591
 592                 enum CmdArrayRef {
 593                         GET_LENGTH = 1,
 594                         GET_VALUES = 2,
 595                         SET_VALUES = 3
 596                 }
 597
 598                 enum CmdStringRef {
 599                         GET_VALUE = 1,
 600                         GET_LENGTH = 2,
 601                         GET_CHARS = 3
 602                 }
 603
 604                 enum CmdObjectRef {
 605                         GET_TYPE = 1,
 606                         GET_VALUES = 2,
 607                         IS_COLLECTED = 3,
 608                         GET_ADDRESS = 4,
 609                         GET_DOMAIN = 5,
 610                         SET_VALUES = 6,
 611                         GET_INFO = 7,
 612                 }
 613
 614                 class Header {
 615                         public int id;
 616                         public int command_set;
 617                         public int command;
 618                         public int flags;
 619                 }
 620
 621                 internal static int GetPacketLength (byte[] header) {
 622                         int offset = 0;
 623                         return decode_int (header, ref offset);
 624                 }
 625
 626                 internal static bool IsReplyPacket (byte[] packet) {
 627                         int offset = 8;
 628                         return decode_byte (packet, ref offset) == 0x80;
 629                 }
 630
 631                 internal static int GetPacketId (byte[] packet) {
 632                         int offset = 4;
 633                         return decode_int (packet, ref offset);
 634                 }
 635
 636                 static int decode_byte (byte[] packet, ref int offset) {
 637                         return packet [offset++];
 638                 }
 639
 640                 static int decode_short (byte[] packet, ref int offset) {
 641                         int res = ((int)packet [offset] << 8) | (int)packet [offset + 1];
 642                         offset += 2;
 643                         return res;
 644                 }
 645
 646                 static int decode_int (byte[] packet, ref int offset) {
 647                         int res = ((int)packet [offset] << 24) | ((int)packet [offset + 1] << 16) | ((int)packet [offset + 2] << 8) | (int)packet [offset + 3];
 648                         offset += 4;
 649                         return res;
 650                 }
 651
 652                 static long decode_id (byte[] packet, ref int offset) {
 653                         return decode_int (packet, ref offset);
 654                 }
 655
 656                 static long decode_long (byte[] packet, ref int offset) {
 657                         uint high = (uint)decode_int (packet, ref offset);
 658                         uint low = (uint)decode_int (packet, ref offset);
 659
 660                         return (long)(((ulong)high << 32) | (ulong)low);
 661                 }
 662
 663                 internal static SuspendPolicy decode_suspend_policy (int suspend_policy) {
 664                         switch ((WPSuspendPolicy)suspend_policy) {
 665                         case WPSuspendPolicy.NONE:
 666                                 return SuspendPolicy.None;
 667                         case WPSuspendPolicy.EVENT_THREAD:
 668                                 return SuspendPolicy.EventThread;
 669                         case WPSuspendPolicy.ALL:
 670                                 return SuspendPolicy.All;
 671                         default:
 672                                 throw new NotImplementedException ();
 673                         }
 674                 }
 675
 676                 static Header decode_command_header (byte[] packet) {
 677                         int offset = 0;
 678                         Header res = new Header ();
 679
 680                         decode_int (packet, ref offset);
 681                         res.id = decode_int (packet, ref offset);
 682                         res.flags = decode_byte (packet, ref offset);
 683                         res.command_set = decode_byte (packet, ref offset);
 684                         res.command = decode_byte (packet, ref offset);
 685
 686                         return res;
 687                 }
 688
 689                 static void encode_byte (byte[] buf, int b, ref int offset) {
 690                         buf [offset] = (byte)b;
 691                         offset ++;
 692                 }
 693
 694                 static void encode_int (byte[] buf, int i, ref int offset) {
 695                         buf [offset] = (byte)((i >> 24) & 0xff);
 696                         buf [offset + 1] = (byte)((i >> 16) & 0xff);
 697                         buf [offset + 2] = (byte)((i >> 8) & 0xff);
 698                         buf [offset + 3] = (byte)((i >> 0) & 0xff);
 699                         offset += 4;
 700                 }
 701
 702                 static void encode_id (byte[] buf, long id, ref int offset) {
 703                         encode_int (buf, (int)id, ref offset);
 704                 }
 705
 706                 static void encode_long (byte[] buf, long l, ref int offset) {
 707                         encode_int (buf, (int)((l >> 32) & 0xffffffff), ref offset);
 708                         encode_int (buf, (int)(l & 0xffffffff), ref offset);
 709                 }
 710
 711                 internal static byte[] EncodePacket (int id, int commandSet, int command, byte[] data, int dataLen) {
 712                         byte[] buf = new byte [dataLen + 11];
 713                         int offset = 0;
 714
 715                         encode_int (buf, buf.Length, ref offset);
 716                         encode_int (buf, id, ref offset);
 717                         encode_byte (buf, 0, ref offset);
 718                         encode_byte (buf, commandSet, ref offset);
 719                         encode_byte (buf, command, ref offset);
 720
 721                         for (int i = 0; i < dataLen; ++i)
 722                                 buf [offset + i] = data [i];
 723
 724                         return buf;
 725                 }
 726
 727                 class PacketReader {
 728                         byte[] packet;
 729                         int offset;
 730
 731                         public PacketReader (byte[] packet) {
 732                                 this.packet = packet;
 733
 734                                 // For event packets
 735                                 Header header = decode_command_header (packet);
 736                                 CommandSet = (CommandSet)header.command_set;
 737                                 Command = header.command;
 738
 739                                 // For reply packets
 740                                 offset = 0;
 741                                 ReadInt (); // length
 742                                 ReadInt (); // id
 743                                 ReadByte (); // flags
 744                                 ErrorCode = ReadShort ();
 745                         }
 746
 747                         public CommandSet CommandSet {
 748                                 get; set;
 749                         }
 750
 751                         public int Command {
 752                                 get; set;
 753                         }
 754
 755                         public int ErrorCode {
 756                                 get; set;
 757                         }
 758
 759                         public int Offset {
 760                                 get {
 761                                         return offset;
 762                                 }
 763                         }
 764
 765                         public int ReadByte () {
 766                                 return decode_byte (packet, ref offset);
 767                         }
 768
 769                         public int ReadShort () {
 770                                 return decode_short (packet, ref offset);
 771                         }
 772
 773                         public int ReadInt () {
 774                                 return decode_int (packet, ref offset);
 775                         }
 776
 777                         public long ReadId () {
 778                                 return decode_id (packet, ref offset);
 779                         }
 780
 781                         public long ReadLong () {
 782                                 return decode_long (packet, ref offset);
 783                         }
 784
 785                         public float ReadFloat () {
 786                                 float f = DataConverter.FloatFromBE (packet, offset);
 787                                 offset += 4;
 788                                 return f;
 789                         }
 790
 791                         public double ReadDouble () {
 792                                 double d = DataConverter.DoubleFromBE (packet, offset);
 793                                 offset += 8;
 794                                 return d;
 795                         }
 796
 797                         public string ReadString () {
 798                                 int len = decode_int (packet, ref offset);
 799                                 string res = new String (Encoding.UTF8.GetChars (packet, offset, len));
 800                                 offset += len;
 801                                 return res;
 802                         }
 803
 804                         public ValueImpl ReadValue () {
 805                                 ElementType etype = (ElementType)ReadByte ();
 806
 807                                 switch (etype) {
 808                                 case ElementType.Void:
 809                                         return new ValueImpl { Type = etype };
 810                                 case ElementType.I1:
 811                                         return new ValueImpl { Type = etype, Value = (sbyte)ReadInt () };
 812                                 case ElementType.U1:
 813                                         return new ValueImpl { Type = etype, Value = (byte)ReadInt () };
 814                                 case ElementType.Boolean:
 815                                         return new ValueImpl { Type = etype, Value = ReadInt () != 0 };
 816                                 case ElementType.I2:
 817                                         return new ValueImpl { Type = etype, Value = (short)ReadInt () };
 818                                 case ElementType.U2:
 819                                         return new ValueImpl { Type = etype, Value = (ushort)ReadInt () };
 820                                 case ElementType.Char:
 821                                         return new ValueImpl { Type = etype, Value = (char)ReadInt () };
 822                                 case ElementType.I4:
 823                                         return new ValueImpl { Type = etype, Value = ReadInt () };
 824                                 case ElementType.U4:
 825                                         return new ValueImpl { Type = etype, Value = (uint)ReadInt () };
 826                                 case ElementType.I8:
 827                                         return new ValueImpl { Type = etype, Value = ReadLong () };
 828                                 case ElementType.U8:
 829                                         return new ValueImpl { Type = etype, Value = (ulong)ReadLong () };
 830                                 case ElementType.R4:
 831                                         return new ValueImpl { Type = etype, Value = ReadFloat () };
 832                                 case ElementType.R8:
 833                                         return new ValueImpl { Type = etype, Value = ReadDouble () };
 834                                 case ElementType.I:
 835                                 case ElementType.U:
 836                                 case ElementType.Ptr:
 837                                         // FIXME: The client and the debuggee might have different word sizes
 838                                         return new ValueImpl { Type = etype, Value = ReadLong () };
 839                                 case ElementType.String:
 840                                 case ElementType.SzArray:
 841                                 case ElementType.Class:
 842                                 case ElementType.Array:
 843                                 case ElementType.Object:
 844                                         long objid = ReadId ();
 845                                         return new ValueImpl () { Type = etype, Objid = objid };
 846                                 case ElementType.ValueType:
 847                                         bool is_enum = ReadByte () == 1;
 848                                         long klass = ReadId ();
 849                                         long nfields = ReadInt ();
 850                                         ValueImpl[] fields = new ValueImpl [nfields];
 851                                         for (int i = 0; i < nfields; ++i)
 852                                                 fields [i] = ReadValue ();
 853                                         return new ValueImpl () { Type = etype, Klass = klass, Fields = fields, IsEnum = is_enum };
 854                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_NULL:
 855                                         return new ValueImpl { Type = etype };
 856                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_TYPE:
 857                                         return new ValueImpl () { Type = etype, Id = ReadId () };
 858                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_PARENT_VTYPE:
 859                                         return new ValueImpl () { Type = etype, Index = ReadInt () };
 860                                 default:
 861                                         throw new NotImplementedException ("Unable to handle type " + etype);
 862                                 }
 863                         }
 864
 865                         public long[] ReadIds (int n) {
 866                                 long[] res = new long [n];
 867                                 for (int i = 0; i < n; ++i)
 868                                         res [i] = ReadId ();
 869                                 return res;
 870                         }
 871                 }
 872
 873                 class PacketWriter {
 874
 875                         byte[] data;
 876                         int offset;
 877
 878                         public PacketWriter () {
 879                                 data = new byte [1024];
 880                                 offset = 0;
 881                         }
 882
 883                         void MakeRoom (int size) {
 884                                 if (offset + size >= data.Length) {
 885                                         int new_len = data.Length * 2;
 886                                         while (new_len < offset + size) {
 887                                                 new_len *= 2;
 888                                         }
 889                                         byte[] new_data = new byte [new_len];
 890                                         Array.Copy (data, new_data, data.Length);
 891                                         data = new_data;
 892                                 }
 893                         }
 894
 895                         public PacketWriter WriteByte (byte val) {
 896                                 MakeRoom (1);
 897                                 encode_byte (data, val, ref offset);
 898                                 return this;
 899                         }
 900
 901                         public PacketWriter WriteInt (int val) {
 902                                 MakeRoom (4);
 903                                 encode_int (data, val, ref offset);
 904                                 return this;
 905                         }
 906
 907                         public PacketWriter WriteId (long id) {
 908                                 MakeRoom (8);
 909                                 encode_id (data, id, ref offset);
 910                                 return this;
 911                         }
 912
 913                         public PacketWriter WriteLong (long val) {
 914                                 MakeRoom (8);
 915                                 encode_long (data, val, ref offset);
 916                                 return this;
 917                         }
 918
 919                         public PacketWriter WriteFloat (float f) {
 920                                 MakeRoom (8);
 921                                 byte[] b = DataConverter.GetBytesBE (f);
 922                                 for (int i = 0; i < 4; ++i)
 923                                         data [offset + i] = b [i];
 924                                 offset += 4;
 925                                 return this;
 926                         }
 927
 928                         public PacketWriter WriteDouble (double d) {
 929                                 MakeRoom (8);
 930                                 byte[] b = DataConverter.GetBytesBE (d);
 931                                 for (int i = 0; i < 8; ++i)
 932                                         data [offset + i] = b [i];
 933                                 offset += 8;
 934                                 return this;
 935                         }
 936
 937                         public PacketWriter WriteInts (int[] ids) {
 938                                 for (int i = 0; i < ids.Length; ++i)
 939                                         WriteInt (ids [i]);
 940                                 return this;
 941                         }
 942
 943                         public PacketWriter WriteIds (long[] ids) {
 944                                 for (int i = 0; i < ids.Length; ++i)
 945                                         WriteId (ids [i]);
 946                                 return this;
 947                         }
 948
 949                         public PacketWriter WriteString (string s) {
 950                                 if (s == null)
 951                                         return WriteInt (-1);
 952
 953                                 byte[] b = Encoding.UTF8.GetBytes (s);
 954                                 MakeRoom (4);
 955                                 encode_int (data, b.Length, ref offset);
 956                                 MakeRoom (b.Length);
 957                                 Buffer.BlockCopy (b, 0, data, offset, b.Length);
 958                                 offset += b.Length;
 959                                 return this;
 960                         }
 961
 962                         public PacketWriter WriteBool (bool val) {
 963                                 WriteByte (val ? (byte)1 : (byte)0);
 964                                 return this;
 965                         }
 966
 967                         public PacketWriter WriteValue (ValueImpl v) {
 968                                 ElementType t;
 969
 970                                 if (v.Value != null)
 971                                         t = TypeCodeToElementType (Type.GetTypeCode (v.Value.GetType ()));
 972                                 else
 973                                         t = v.Type;
 974                                 WriteByte ((byte)t);
 975                                 switch (t) {
 976                                 case ElementType.Boolean:
 977                                         WriteInt ((bool)v.Value ? 1 : 0);
 978                                         break;
 979                                 case ElementType.Char:
 980                                         WriteInt ((int)(char)v.Value);
 981                                         break;
 982                                 case ElementType.I1:
 983                                         WriteInt ((int)(sbyte)v.Value);
 984                                         break;
 985                                 case ElementType.U1:
 986                                         WriteInt ((int)(byte)v.Value);
 987                                         break;
 988                                 case ElementType.I2:
 989                                         WriteInt ((int)(short)v.Value);
 990                                         break;
 991                                 case ElementType.U2:
 992                                         WriteInt ((int)(ushort)v.Value);
 993                                         break;
 994                                 case ElementType.I4:
 995                                         WriteInt ((int)(int)v.Value);
 996                                         break;
 997                                 case ElementType.U4:
 998                                         WriteInt ((int)(uint)v.Value);
 999                                         break;
1000                                 case ElementType.I8:
1001                                         WriteLong ((long)(long)v.Value);
1002                                         break;
1003                                 case ElementType.U8:
1004                                         WriteLong ((long)(ulong)v.Value);
1005                                         break;
1006                                 case ElementType.R4:
1007                                         WriteFloat ((float)v.Value);
1008                                         break;
1009                                 case ElementType.R8:
1010                                         WriteDouble ((double)v.Value);
1011                                         break;
1012                                 case ElementType.String:
1013                                 case ElementType.SzArray:
1014                                 case ElementType.Class:
1015                                 case ElementType.Array:
1016                                 case ElementType.Object:
1017                                         WriteId (v.Objid);
1018                                         break;
1019                                 case ElementType.ValueType:
1020                                         // FIXME:
1021                                         if (v.IsEnum)
1022                                                 throw new NotImplementedException ();
1023                                         WriteByte (0);
1024                                         WriteId (v.Klass);
1025                                         WriteInt (v.Fields.Length);
1026                                         for (int i = 0; i < v.Fields.Length; ++i)
1027                                                 WriteValue (v.Fields [i]);
1028                                         break;
1029                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_NULL:
1030                                         break;
1031                                 default:
1032                                         throw new NotImplementedException ();
1033                                 }
1034
1035                                 return this;
1036                         }
1037
1038                         public PacketWriter WriteValues (ValueImpl[] values) {
1039                                 for (int i = 0; i < values.Length; ++i)
1040                                         WriteValue (values [i]);
1041                                 return this;
1042                         }
1043
1044                         public byte[] Data {
1045                                 get {
1046                                         return data;
1047                                 }
1048                         }
1049
1050                         public int Offset {
1051                                 get {
1052                                         return offset;
1053                                 }
1054                         }
1055                 }
1056
1057                 delegate void ReplyCallback (int packet_id, byte[] packet);
1058
1059                 bool closed;
1060                 Thread receiver_thread;
1061                 Dictionary<int, byte[]> reply_packets;
1062                 Dictionary<int, ReplyCallback> reply_cbs;
1063                 Dictionary<int, int> reply_cb_counts;
1064                 object reply_packets_monitor;
1065
1066                 internal event EventHandler<ErrorHandlerEventArgs> ErrorHandler;
1067
1068                 protected Connection () {
1069                         closed = false;
1070                         reply_packets = new Dictionary<int, byte[]> ();
1071                         reply_cbs = new Dictionary<int, ReplyCallback> ();
1072                         reply_cb_counts = new Dictionary<int, int> ();
1073                         reply_packets_monitor = new Object ();
1074                         if (EnableConnectionLogging) {
1075                                 var path = Environment.GetEnvironmentVariable ("MONO_SDB_LOG");
1076                                 if (path.Contains ("{0}")) {
1077                                         //C:\SomeDir\sdbLog{0}.txt -> C:\SomeDir\sdbLog1.txt
1078                                         LoggingStream = new StreamWriter (string.Format (path, ConnectionId++), false);
1079                                 } else if (Path.HasExtension (path)) {
1080                                         //C:\SomeDir\sdbLog.txt -> C:\SomeDir\sdbLog1.txt
1081                                         LoggingStream = new StreamWriter (Path.GetDirectoryName (path) + Path.DirectorySeparatorChar + Path.GetFileNameWithoutExtension (path) + ConnectionId++ + "." + Path.GetExtension (path), false);
1082                                 } else {
1083                                         //C:\SomeDir\sdbLog -> C:\SomeDir\sdbLog1
1084                                         LoggingStream = new StreamWriter (path + ConnectionId++, false);
1085                                 }
1086                         }
1087                 }
1088
1089                 protected abstract int TransportReceive (byte[] buf, int buf_offset, int len);
1090                 protected abstract int TransportSend (byte[] buf, int buf_offset, int len);
1091                 protected abstract void TransportSetTimeouts (int send_timeout, int receive_timeout);
1092                 protected abstract void TransportClose ();
1093
1094                 internal VersionInfo Version;
1095
1096                 int Receive (byte[] buf, int buf_offset, int len) {
1097                         int offset = 0;
1098
1099                         while (offset < len) {
1100                                 int n = TransportReceive (buf, buf_offset + offset, len - offset);
1101
1102                                 if (n == 0)
1103                                         return offset;
1104                                 offset += n;
1105                         }
1106
1107                         return offset;
1108                 }
1109
1110                 // Do the wire protocol handshake
1111                 internal void Connect () {
1112                         byte[] buf = new byte [HANDSHAKE_STRING.Length];
1113                         char[] cbuf = new char [buf.Length];
1114
1115                         // FIXME: Add a timeout
1116                         int n = Receive (buf, 0, buf.Length);
1117                         if (n == 0)
1118                                 throw new IOException ("DWP Handshake failed.");
1119                         for (int i = 0; i < buf.Length; ++i)
1120                                 cbuf [i] = (char)buf [i];
1121
1122                         if (new String (cbuf) != HANDSHAKE_STRING)
1123                                 throw new IOException ("DWP Handshake failed.");
1124
1125                         TransportSend (buf, 0, buf.Length);
1126
1127                         receiver_thread = new Thread (new ThreadStart (receiver_thread_main));
1128                         receiver_thread.Name = "SDB Receiver";
1129                         receiver_thread.IsBackground = true;
1130                         receiver_thread.Start ();
1131
1132                         Version = VM_GetVersion ();
1133
1134                         //
1135                         // Tell the debuggee our protocol version, so newer debuggees can work
1136                         // with older clients
1137                         //
1138
1139                         //
1140                         // Older debuggees might not support this request
1141                         EventHandler<ErrorHandlerEventArgs> OrigErrorHandler = ErrorHandler;
1142                         ErrorHandler = null;
1143                         ErrorHandler += delegate (object sender, ErrorHandlerEventArgs args) {
1144                                 throw new NotSupportedException ();
1145                         };
1146                         try {
1147                                 VM_SetProtocolVersion (MAJOR_VERSION, MINOR_VERSION);
1148                         } catch (NotSupportedException) {
1149                         }
1150                         ErrorHandler = OrigErrorHandler;
1151                 }
1152
1153                 internal byte[] ReadPacket () {
1154                         // FIXME: Throw ClosedConnectionException () if the connection is closed
1155                         // FIXME: Throw ClosedConnectionException () if another thread closes the connection
1156                         // FIXME: Locking
1157                         byte[] header = new byte [HEADER_LENGTH];
1158
1159                         int len = Receive (header, 0, header.Length);
1160                         if (len == 0)
1161                                 return new byte [0];
1162                         if (len != HEADER_LENGTH) {
1163                                 // FIXME:
1164                                 throw new IOException ("Packet of length " + len + " is read.");
1165                         }
1166
1167                         int packetLength = GetPacketLength (header);
1168                         if (packetLength < 11)
1169                                 throw new IOException ("Invalid packet length.");
1170
1171                         if (packetLength == 11) {
1172                                 return header;
1173                         } else {
1174                                 byte[] buf = new byte [packetLength];
1175                                 for (int i = 0; i < header.Length; ++i)
1176                                         buf [i] = header [i];
1177                                 len = Receive (buf, header.Length, packetLength - header.Length);
1178                                 if (len != packetLength - header.Length)
1179                                         throw new IOException ();
1180                                 return buf;
1181                         }
1182                 }
1183
1184                 internal void WritePacket (byte[] packet) {
1185                         // FIXME: Throw ClosedConnectionException () if the connection is closed
1186                         // FIXME: Throw ClosedConnectionException () if another thread closes the connection
1187                         // FIXME: Locking
1188                         TransportSend (packet, 0, packet.Length);
1189                 }
1190
1191                 internal void WritePackets (List<byte[]> packets) {
1192                         // FIXME: Throw ClosedConnectionException () if the connection is closed
1193                         // FIXME: Throw ClosedConnectionException () if another thread closes the connection
1194                         // FIXME: Locking
1195                         int len = 0;
1196                         for (int i = 0; i < packets.Count; ++i)
1197                                 len += packets [i].Length;
1198                         byte[] data = new byte [len];
1199                         int pos = 0;
1200                         for (int i = 0; i < packets.Count; ++i) {
1201                                 Buffer.BlockCopy (packets [i], 0, data, pos, packets [i].Length);
1202                                 pos += packets [i].Length;
1203                         }
1204                         TransportSend (data, 0, data.Length);
1205                 }
1206
1207                 internal void Close () {
1208                         closed = true;
1209                 }
1210
1211                 internal bool IsClosed {
1212                         get {
1213                                 return closed;
1214                         }
1215                 }
1216
1217                 bool disconnected;
1218
1219                 void receiver_thread_main () {
1220                         while (!closed) {
1221                                 try {
1222                                         bool res = ReceivePacket ();
1223                                         if (!res)
1224                                                 break;
1225                                 } catch (Exception ex) {
1226                                         if (!closed) {
1227                                                 Console.WriteLine (ex);
1228                                         }
1229                                         break;
1230                                 }
1231                         }
1232
1233                         lock (reply_packets_monitor) {
1234                                 disconnected = true;
1235                                 Monitor.PulseAll (reply_packets_monitor);
1236                                 TransportClose ();
1237                         }
1238                         EventHandler.VMDisconnect (0, 0, null);
1239                 }
1240
1241                 bool ReceivePacket () {
1242                                 byte[] packet = ReadPacket ();
1243
1244                                 if (packet.Length == 0) {
1245                                         return false;
1246                                 }
1247
1248                                 if (IsReplyPacket (packet)) {
1249                                         int id = GetPacketId (packet);
1250                                         ReplyCallback cb = null;
1251                                         lock (reply_packets_monitor) {
1252                                                 reply_cbs.TryGetValue (id, out cb);
1253                                                 if (cb == null) {
1254                                                         reply_packets [id] = packet;
1255                                                         Monitor.PulseAll (reply_packets_monitor);
1256                                                 } else {
1257                                                         int c = reply_cb_counts [id];
1258                                                         c --;
1259                                                         if (c == 0) {
1260                                                                 reply_cbs.Remove (id);
1261                                                                 reply_cb_counts.Remove (id);
1262                                                         }
1263                                                 }
1264                                         }
1265
1266                                         if (cb != null)
1267                                                 cb.Invoke (id, packet);
1268                                 } else {
1269                                         PacketReader r = new PacketReader (packet);
1270
1271                                         if (r.CommandSet == CommandSet.EVENT && r.Command == (int)CmdEvent.COMPOSITE) {
1272                                                 int spolicy = r.ReadByte ();
1273                                                 int nevents = r.ReadInt ();
1274
1275                                                 SuspendPolicy suspend_policy = decode_suspend_policy (spolicy);
1276
1277                                                 EventInfo[] events = new EventInfo [nevents];
1278
1279                                                 for (int i = 0; i < nevents; ++i) {
1280                                                         EventKind kind = (EventKind)r.ReadByte ();
1281                                                         int req_id = r.ReadInt ();
1282
1283                                                         EventType etype = (EventType)kind;
1284
1285                                                         long thread_id = r.ReadId ();
1286                                                         if (kind == EventKind.VM_START) {
1287                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id };
1288                                                                 //EventHandler.VMStart (req_id, thread_id, null);
1289                                                         } else if (kind == EventKind.VM_DEATH) {
1290                                                                 int exit_code = 0;
1291                                                                 if (Version.AtLeast (2, 27))
1292                                                                         exit_code = r.ReadInt ();
1293                                                                 //EventHandler.VMDeath (req_id, 0, null);
1294                                                                 events [i] = new EventInfo (etype, req_id) { ExitCode = exit_code };
1295                                                         } else if (kind == EventKind.THREAD_START) {
1296                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = thread_id };
1297                                                                 //EventHandler.ThreadStart (req_id, thread_id, thread_id);
1298                                                         } else if (kind == EventKind.THREAD_DEATH) {
1299                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = thread_id };
1300                                                                 //EventHandler.ThreadDeath (req_id, thread_id, thread_id);
1301                                                         } else if (kind == EventKind.ASSEMBLY_LOAD) {
1302                                                                 long id = r.ReadId ();
1303                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1304                                                                 //EventHandler.AssemblyLoad (req_id, thread_id, id);
1305                                                         } else if (kind == EventKind.ASSEMBLY_UNLOAD) {
1306                                                                 long id = r.ReadId ();
1307                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1308                                                                 //EventHandler.AssemblyUnload (req_id, thread_id, id);
1309                                                         } else if (kind == EventKind.TYPE_LOAD) {
1310                                                                 long id = r.ReadId ();
1311                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1312                                                                 //EventHandler.TypeLoad (req_id, thread_id, id);
1313                                                         } else if (kind == EventKind.METHOD_ENTRY) {
1314                                                                 long id = r.ReadId ();
1315                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1316                                                                 //EventHandler.MethodEntry (req_id, thread_id, id);
1317                                                         } else if (kind == EventKind.METHOD_EXIT) {
1318                                                                 long id = r.ReadId ();
1319                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1320                                                                 //EventHandler.MethodExit (req_id, thread_id, id);
1321                                                         } else if (kind == EventKind.BREAKPOINT) {
1322                                                                 long id = r.ReadId ();
1323                                                                 long loc = r.ReadLong ();
1324                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id, Location = loc };
1325                                                                 //EventHandler.Breakpoint (req_id, thread_id, id, loc);
1326                                                         } else if (kind == EventKind.STEP) {
1327                                                                 long id = r.ReadId ();
1328                                                                 long loc = r.ReadLong ();
1329                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id, Location = loc };
1330                                                                 //EventHandler.Step (req_id, thread_id, id, loc);
1331                                                         } else if (kind == EventKind.EXCEPTION) {
1332                                                                 long id = r.ReadId ();
1333                                                                 long loc = 0; // FIXME
1334                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id, Location = loc };
1335                                                                 //EventHandler.Exception (req_id, thread_id, id, loc);
1336                                                         } else if (kind == EventKind.APPDOMAIN_CREATE) {
1337                                                                 long id = r.ReadId ();
1338                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1339                                                                 //EventHandler.AppDomainCreate (req_id, thread_id, id);
1340                                                         } else if (kind == EventKind.APPDOMAIN_UNLOAD) {
1341                                                                 long id = r.ReadId ();
1342                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1343                                                                 //EventHandler.AppDomainUnload (req_id, thread_id, id);
1344                                                         } else if (kind == EventKind.USER_BREAK) {
1345                                                                 long id = 0;
1346                                                                 long loc = 0;
1347                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id, Location = loc };
1348                                                                 //EventHandler.Exception (req_id, thread_id, id, loc);
1349                                                         } else if (kind == EventKind.USER_LOG) {
1350                                                                 int level = r.ReadInt ();
1351                                                                 string category = r.ReadString ();
1352                                                                 string message = r.ReadString ();
1353                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Level = level, Category = category, Message = message };
1354                                                                 //EventHandler.Exception (req_id, thread_id, id, loc);
1355                                                         } else if (kind == EventKind.KEEPALIVE) {
1356                                                                 events [i] = new EventInfo (etype, req_id) { };
1357                                                         } else {
1358                                                                 throw new NotImplementedException ("Unknown event kind: " + kind);
1359                                                         }
1360                                                 }
1361
1362                                                 EventHandler.Events (suspend_policy, events);
1363                                         }
1364                                 }
1365
1366                                 return true;
1367                 }
1368
1369                 internal IEventHandler EventHandler {
1370                         get; set;
1371                 }
1372
1373                 static String CommandString (CommandSet command_set, int command)
1374                 {
1375                         string cmd;
1376                         switch (command_set) {
1377                         case CommandSet.VM:
1378                                 cmd = ((CmdVM)command).ToString ();
1379                                 break;
1380                         case CommandSet.OBJECT_REF:
1381                                 cmd = ((CmdObjectRef)command).ToString ();
1382                                 break;
1383                         case CommandSet.STRING_REF:
1384                                 cmd = ((CmdStringRef)command).ToString ();
1385                                 break;
1386                         case CommandSet.THREAD:
1387                                 cmd = ((CmdThread)command).ToString ();
1388                                 break;
1389                         case CommandSet.ARRAY_REF:
1390                                 cmd = ((CmdArrayRef)command).ToString ();
1391                                 break;
1392                         case CommandSet.EVENT_REQUEST:
1393                                 cmd = ((CmdEventRequest)command).ToString ();
1394                                 break;
1395                         case CommandSet.STACK_FRAME:
1396                                 cmd = ((CmdStackFrame)command).ToString ();
1397                                 break;
1398                         case CommandSet.APPDOMAIN:
1399                                 cmd = ((CmdAppDomain)command).ToString ();
1400                                 break;
1401                         case CommandSet.ASSEMBLY:
1402                                 cmd = ((CmdAssembly)command).ToString ();
1403                                 break;
1404                         case CommandSet.METHOD:
1405                                 cmd = ((CmdMethod)command).ToString ();
1406                                 break;
1407                         case CommandSet.TYPE:
1408                                 cmd = ((CmdType)command).ToString ();
1409                                 break;
1410                         case CommandSet.MODULE:
1411                                 cmd = ((CmdModule)command).ToString ();
1412                                 break;
1413                         case CommandSet.FIELD:
1414                                 cmd = ((CmdField)command).ToString ();
1415                                 break;
1416                         case CommandSet.EVENT:
1417                                 cmd = ((CmdEvent)command).ToString ();
1418                                 break;
1419                         default:
1420                                 cmd = command.ToString ();
1421                                 break;
1422                         }
1423                         return string.Format ("[{0} {1}]", command_set, cmd);
1424                 }
1425
1426                 long total_protocol_ticks;
1427
1428                 void LogPacket (int packet_id, byte[] encoded_packet, byte[] reply_packet, CommandSet command_set, int command, Stopwatch watch) {
1429                         watch.Stop ();
1430                         total_protocol_ticks += watch.ElapsedTicks;
1431                         var ts = TimeSpan.FromTicks (total_protocol_ticks);
1432                         string msg = string.Format ("Packet: {0} sent: {1} received: {2} ms: {3} total ms: {4} {5}",
1433                            packet_id, encoded_packet.Length, reply_packet.Length, watch.ElapsedMilliseconds,
1434                            (ts.Seconds * 1000) + ts.Milliseconds,
1435                            CommandString (command_set, command));
1436
1437                         LoggingStream.WriteLine (msg);
1438                         LoggingStream.Flush ();
1439                 }
1440
1441                 bool buffer_packets;
1442                 List<byte[]> buffered_packets = new List<byte[]> ();
1443
1444                 //
1445                 // Start buffering request/response packets on both the client and the debuggee side.
1446                 // Packets sent between StartBuffering ()/StopBuffering () must be async, i.e. sent
1447                 // using Send () and not SendReceive ().
1448                 //
1449                 public void StartBuffering () {
1450                         buffer_packets = true;
1451                         if (Version.AtLeast (2, 34))
1452                                 VM_StartBuffering ();
1453                 }
1454
1455                 public void StopBuffering () {
1456                         if (Version.AtLeast (2, 34))
1457                                 VM_StopBuffering ();
1458                         buffer_packets = false;
1459
1460                         WritePackets (buffered_packets);
1461                         if (EnableConnectionLogging) {
1462                                 LoggingStream.WriteLine (String.Format ("Sent {0} packets.", buffered_packets.Count));
1463                                 LoggingStream.Flush ();
1464                         }
1465                         buffered_packets.Clear ();
1466                 }
1467
1468                 /* Send a request and call cb when a result is received */
1469                 int Send (CommandSet command_set, int command, PacketWriter packet, Action<PacketReader> cb, int count) {
1470                         int id = IdGenerator;
1471
1472                         Stopwatch watch = null;
1473                         if (EnableConnectionLogging)
1474                                 watch = Stopwatch.StartNew ();
1475
1476                         byte[] encoded_packet;
1477                         if (packet == null)
1478                                 encoded_packet = EncodePacket (id, (int)command_set, command, null, 0);
1479                         else
1480                                 encoded_packet = EncodePacket (id, (int)command_set, command, packet.Data, packet.Offset);
1481
1482                         if (cb != null) {
1483                                 lock (reply_packets_monitor) {
1484                                         reply_cbs [id] = delegate (int packet_id, byte[] p) {
1485                                                 if (EnableConnectionLogging)
1486                                                         LogPacket (packet_id, encoded_packet, p, command_set, command, watch);
1487                                                 /* Run the callback on a tp thread to avoid blocking the receive thread */
1488                                                 PacketReader r = new PacketReader (p);
1489                                                 cb.BeginInvoke (r, null, null);
1490                                         };
1491                                         reply_cb_counts [id] = count;
1492                                 }
1493                         }
1494
1495                         if (buffer_packets)
1496                                 buffered_packets.Add (encoded_packet);
1497                         else
1498                                 WritePacket (encoded_packet);
1499
1500                         return id;
1501                 }
1502
1503                 // Send a request without waiting for an answer
1504                 void Send (CommandSet command_set, int command) {
1505                         Send (command_set, command, null, null, 0);
1506                 }
1507
1508                 PacketReader SendReceive (CommandSet command_set, int command, PacketWriter packet) {
1509                         int id = IdGenerator;
1510                         Stopwatch watch = null;
1511
1512                         if (disconnected)
1513                                 throw new VMDisconnectedException ();
1514
1515                         if (EnableConnectionLogging)
1516                                 watch = Stopwatch.StartNew ();
1517
1518                         byte[] encoded_packet;
1519
1520                         if (packet == null)
1521                                 encoded_packet = EncodePacket (id, (int)command_set, command, null, 0);
1522                         else
1523                                 encoded_packet = EncodePacket (id, (int)command_set, command, packet.Data, packet.Offset);
1524
1525                         WritePacket (encoded_packet);
1526
1527                         int packetId = id;
1528
1529                         /* Wait for the reply packet */
1530                         while (true) {
1531                                 lock (reply_packets_monitor) {
1532                                         if (reply_packets.ContainsKey (packetId)) {
1533                                                 byte[] reply = reply_packets [packetId];
1534                                                 reply_packets.Remove (packetId);
1535                                                 PacketReader r = new PacketReader (reply);
1536
1537                                                 if (EnableConnectionLogging)
1538                                                         LogPacket (packetId, encoded_packet, reply, command_set, command, watch);
1539                                                 if (r.ErrorCode != 0) {
1540                                                         if (ErrorHandler != null)
1541                                                                 ErrorHandler (this, new ErrorHandlerEventArgs () { ErrorCode = (ErrorCode)r.ErrorCode });
1542                                                         throw new NotImplementedException ("No error handler set.");
1543                                                 } else {
1544                                                         return r;
1545                                                 }
1546                                         } else {
1547                                                 if (disconnected)
1548                                                         throw new VMDisconnectedException ();
1549                                                 Monitor.Wait (reply_packets_monitor);
1550                                         }
1551                                 }
1552                         }
1553                 }
1554
1555                 PacketReader SendReceive (CommandSet command_set, int command) {
1556                         return SendReceive (command_set, command, null);
1557                 }
1558
1559                 int packet_id_generator;
1560
1561                 int IdGenerator {
1562                         get {
1563                                 return Interlocked.Increment (ref packet_id_generator);
1564                         }
1565                 }
1566
1567                 CattrInfo[] ReadCattrs (PacketReader r) {
1568                         CattrInfo[] res = new CattrInfo [r.ReadInt ()];
1569                         for (int i = 0; i < res.Length; ++i) {
1570                                 CattrInfo info = new CattrInfo ();
1571                                 info.ctor_id = r.ReadId ();
1572                                 info.ctor_args = new ValueImpl [r.ReadInt ()];
1573                                 for (int j = 0; j < info.ctor_args.Length; ++j) {
1574                                         info.ctor_args [j] = r.ReadValue ();
1575                                 }
1576                                 info.named_args = new CattrNamedArgInfo [r.ReadInt ()];
1577                                 for (int j = 0; j < info.named_args.Length; ++j) {
1578                                         CattrNamedArgInfo arg = new CattrNamedArgInfo ();
1579                                         int arg_type = r.ReadByte ();
1580                                         arg.is_property = arg_type == 0x54;
1581                                         arg.id = r.ReadId ();
1582                                         arg.value = r.ReadValue ();
1583                                         info.named_args [j] = arg;
1584                                 }
1585                                 res [i] = info;
1586                         }
1587                         return res;
1588                 }
1589
1590                 static ElementType TypeCodeToElementType (TypeCode c) {
1591                         switch (c) {
1592                         case TypeCode.Boolean:
1593                                 return ElementType.Boolean;
1594                         case TypeCode.Char:
1595                                 return ElementType.Char;
1596                         case TypeCode.SByte:
1597                                 return ElementType.I1;
1598                         case TypeCode.Byte:
1599                                 return ElementType.U1;
1600                         case TypeCode.Int16:
1601                                 return ElementType.I2;
1602                         case TypeCode.UInt16:
1603                                 return ElementType.U2;
1604                         case TypeCode.Int32:
1605                                 return ElementType.I4;
1606                         case TypeCode.UInt32:
1607                                 return ElementType.U4;
1608                         case TypeCode.Int64:
1609                                 return ElementType.I8;
1610                         case TypeCode.UInt64:
1611                                 return ElementType.U8;
1612                         case TypeCode.Single:
1613                                 return ElementType.R4;
1614                         case TypeCode.Double:
1615                                 return ElementType.R8;
1616                         default:
1617                                 throw new NotImplementedException ();
1618                         }
1619                 }
1620
1621                 /*
1622                  * Implementation of debugger commands
1623                  */
1624
1625                 internal VersionInfo VM_GetVersion () {
1626                         var res = SendReceive (CommandSet.VM, (int)CmdVM.VERSION, null);
1627                         VersionInfo info = new VersionInfo ();
1628                         info.VMVersion = res.ReadString ();
1629                         info.MajorVersion = res.ReadInt ();
1630                         info.MinorVersion = res.ReadInt ();
1631                         return info;
1632                 }
1633
1634                 internal void VM_SetProtocolVersion (int major, int minor) {
1635                         SendReceive (CommandSet.VM, (int)CmdVM.SET_PROTOCOL_VERSION, new PacketWriter ().WriteInt (major).WriteInt (minor));
1636                 }
1637
1638                 internal long[] VM_GetThreads () {
1639                         var res = SendReceive (CommandSet.VM, (int)CmdVM.ALL_THREADS, null);
1640                         int len = res.ReadInt ();
1641                         long[] arr = new long [len];
1642                         for (int i = 0; i < len; ++i)
1643                                 arr [i] = res.ReadId ();
1644                         return arr;
1645                 }
1646
1647                 internal void VM_Suspend () {
1648                         SendReceive (CommandSet.VM, (int)CmdVM.SUSPEND);
1649                 }
1650
1651                 internal void VM_Resume () {
1652                         SendReceive (CommandSet.VM, (int)CmdVM.RESUME);
1653                 }
1654
1655                 internal void VM_Exit (int exitCode) {
1656                         SendReceive (CommandSet.VM, (int)CmdVM.EXIT, new PacketWriter ().WriteInt (exitCode));
1657                 }
1658
1659                 internal void VM_Dispose () {
1660                         SendReceive (CommandSet.VM, (int)CmdVM.DISPOSE);
1661                 }
1662
1663                 internal ValueImpl VM_InvokeMethod (long thread, long method, ValueImpl this_arg, ValueImpl[] arguments, InvokeFlags flags, out ValueImpl exc) {
1664                         exc = null;
1665                         PacketReader r = SendReceive (CommandSet.VM, (int)CmdVM.INVOKE_METHOD, new PacketWriter ().WriteId (thread).WriteInt ((int)flags).WriteId (method).WriteValue (this_arg).WriteInt (arguments.Length).WriteValues (arguments));
1666                         if (r.ReadByte () == 0) {
1667                                 exc = r.ReadValue ();
1668                                 return null;
1669                         } else {
1670                                 return r.ReadValue ();
1671                         }
1672                 }
1673
1674                 internal delegate void InvokeMethodCallback (ValueImpl v, ValueImpl exc, ValueImpl out_this, ValueImpl[] out_args, ErrorCode error, object state);
1675
1676                 void read_invoke_res (PacketReader r, out ValueImpl v, out ValueImpl exc, out ValueImpl out_this, out ValueImpl[] out_args) {
1677                         int resflags = r.ReadByte ();
1678                         v = null;
1679                         exc = null;
1680                         out_this = null;
1681                         out_args = null;
1682                         if (resflags == 0) {
1683                                 exc = r.ReadValue ();
1684                         } else {
1685                                 v = r.ReadValue ();
1686                                 if ((resflags & 2) != 0)
1687                                         out_this = r.ReadValue ();
1688                                 if ((resflags & 4) != 0) {
1689                                         int nargs = r.ReadInt ();
1690                                         out_args = new ValueImpl [nargs];
1691                                         for (int i = 0; i < nargs; ++i)
1692                                                 out_args [i] = r.ReadValue ();
1693                                 }
1694                         }
1695                 }
1696
1697                 internal int VM_BeginInvokeMethod (long thread, long method, ValueImpl this_arg, ValueImpl[] arguments, InvokeFlags flags, InvokeMethodCallback callback, object state) {
1698                         return Send (CommandSet.VM, (int)CmdVM.INVOKE_METHOD, new PacketWriter ().WriteId (thread).WriteInt ((int)flags).WriteId (method).WriteValue (this_arg).WriteInt (arguments.Length).WriteValues (arguments), delegate (PacketReader r) {
1699                                         ValueImpl v, exc, out_this = null;
1700                                         ValueImpl[] out_args = null;
1701
1702                                         if (r.ErrorCode != 0) {
1703                                                 callback (null, null, null, null, (ErrorCode)r.ErrorCode, state);
1704                                         } else {
1705                                                 read_invoke_res (r, out v, out exc, out out_this, out out_args);
1706                                                 callback (v, exc, out_this, out_args, 0, state);
1707                                         }
1708                                 }, 1);
1709                 }
1710
1711                 internal int VM_BeginInvokeMethods (long thread, long[] methods, ValueImpl this_arg, List<ValueImpl[]> arguments, InvokeFlags flags, InvokeMethodCallback callback, object state) {
1712                         // FIXME: Merge this with INVOKE_METHOD
1713                         var w = new PacketWriter ();
1714                         w.WriteId (thread);
1715                         w.WriteInt ((int)flags);
1716                         w.WriteInt (methods.Length);
1717                         for (int i = 0; i < methods.Length; ++i) {
1718                                 w.WriteId (methods [i]);
1719                                 w.WriteValue (this_arg);
1720                                 w.WriteInt (arguments [i].Length);
1721                                 w.WriteValues (arguments [i]);
1722                         }
1723                         return Send (CommandSet.VM, (int)CmdVM.INVOKE_METHODS, w, delegate (PacketReader r) {
1724                                         ValueImpl v, exc, out_this = null;
1725                                         ValueImpl[] out_args = null;
1726
1727                                         if (r.ErrorCode != 0) {
1728                                                 callback (null, null, null, null, (ErrorCode)r.ErrorCode, state);
1729                                         } else {
1730                                                 read_invoke_res (r, out v, out exc, out out_this, out out_args);
1731                                                 callback (v, exc, out_this, out_args, 0, state);
1732                                         }
1733                                 }, methods.Length);
1734                 }
1735
1736                 internal void VM_AbortInvoke (long thread, int id)
1737                 {
1738                         SendReceive (CommandSet.VM, (int)CmdVM.ABORT_INVOKE, new PacketWriter ().WriteId (thread).WriteInt (id));
1739                 }
1740
1741                 internal void SetSocketTimeouts (int send_timeout, int receive_timeout, int keepalive_interval)
1742                 {
1743                         TransportSetTimeouts (send_timeout, receive_timeout);
1744                         SendReceive (CommandSet.VM, (int)CmdVM.SET_KEEPALIVE, new PacketWriter ().WriteId (keepalive_interval));
1745                 }
1746
1747                 internal long[] VM_GetTypesForSourceFile (string fname, bool ignoreCase) {
1748                         var res = SendReceive (CommandSet.VM, (int)CmdVM.GET_TYPES_FOR_SOURCE_FILE, new PacketWriter ().WriteString (fname).WriteBool (ignoreCase));
1749                         int count = res.ReadInt ();
1750                         long[] types = new long [count];
1751                         for (int i = 0; i < count; ++i)
1752                                 types [i] = res.ReadId ();
1753                         return types;
1754                 }
1755
1756                 internal long[] VM_GetTypes (string name, bool ignoreCase) {
1757                         var res = SendReceive (CommandSet.VM, (int)CmdVM.GET_TYPES, new PacketWriter ().WriteString (name).WriteBool (ignoreCase));
1758                         int count = res.ReadInt ();
1759                         long[] types = new long [count];
1760                         for (int i = 0; i < count; ++i)
1761                                 types [i] = res.ReadId ();
1762                         return types;
1763                 }
1764
1765                 internal void VM_StartBuffering () {
1766                         Send (CommandSet.VM, (int)CmdVM.START_BUFFERING);
1767                 }
1768
1769                 internal void VM_StopBuffering () {
1770                         Send (CommandSet.VM, (int)CmdVM.STOP_BUFFERING);
1771                 }
1772
1773                 /*
1774                  * DOMAIN
1775                  */
1776
1777                 internal long RootDomain {
1778                         get {
1779                                 return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ROOT_DOMAIN, null).ReadId ();
1780                         }
1781                 }
1782
1783                 internal string Domain_GetName (long id) {
1784                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_FRIENDLY_NAME, new PacketWriter ().WriteId (id)).ReadString ();
1785                 }
1786
1787                 internal long[] Domain_GetAssemblies (long id) {
1788                         var res = SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ASSEMBLIES, new PacketWriter ().WriteId (id));
1789                         int count = res.ReadInt ();
1790                         long[] assemblies = new long [count];
1791                         for (int i = 0; i < count; ++i)
1792                                 assemblies [i] = res.ReadId ();
1793                         return assemblies;
1794                 }
1795
1796                 internal long Domain_GetEntryAssembly (long id) {
1797                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ENTRY_ASSEMBLY, new PacketWriter ().WriteId (id)).ReadId ();
1798                 }
1799
1800                 internal long Domain_GetCorlib (long id) {
1801                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_CORLIB, new PacketWriter ().WriteId (id)).ReadId ();
1802                 }
1803
1804                 internal long Domain_CreateString (long id, string s) {
1805                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.CREATE_STRING, new PacketWriter ().WriteId (id).WriteString (s)).ReadId ();
1806                 }
1807
1808                 internal long Domain_CreateBoxedValue (long id, long type_id, ValueImpl v) {
1809                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.CREATE_BOXED_VALUE, new PacketWriter ().WriteId (id).WriteId (type_id).WriteValue (v)).ReadId ();
1810                 }
1811
1812                 /*
1813                  * METHOD
1814                  */
1815
1816                 internal string Method_GetName (long id) {
1817                         return SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
1818                 }
1819
1820                 internal long Method_GetDeclaringType (long id) {
1821                         return SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_DECLARING_TYPE, new PacketWriter ().WriteId (id)).ReadId ();
1822                 }
1823
1824                 internal DebugInfo Method_GetDebugInfo (long id) {
1825                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_DEBUG_INFO, new PacketWriter ().WriteId (id));
1826
1827                         DebugInfo info = new DebugInfo ();
1828                         info.max_il_offset = res.ReadInt ();
1829
1830                         SourceInfo[] sources = null;
1831                         if (Version.AtLeast (2, 13)) {
1832                                 int n = res.ReadInt ();
1833                                 sources = new SourceInfo [n];
1834                                 for (int i = 0; i < n; ++i) {
1835                                         sources [i].source_file = res.ReadString ();
1836                                         if (Version.AtLeast (2, 14)) {
1837                                                 sources [i].hash = new byte [16];
1838                                                 for (int j = 0; j < 16; ++j)
1839                                                         sources [i].hash [j] = (byte)res.ReadByte ();
1840                                         }
1841                                 }
1842                         } else {
1843                                 sources = new SourceInfo [1];
1844                                 sources [0].source_file = res.ReadString ();
1845                         }
1846
1847                         int n_il_offsets = res.ReadInt ();
1848                         info.il_offsets = new int [n_il_offsets];
1849                         info.line_numbers = new int [n_il_offsets];
1850                         info.source_files = new SourceInfo [n_il_offsets];
1851                         info.column_numbers = new int [n_il_offsets];
1852                         info.end_line_numbers = new int [n_il_offsets];
1853                         info.end_column_numbers = new int [n_il_offsets];
1854                         for (int i = 0; i < n_il_offsets; ++i) {
1855                                 info.il_offsets [i] = res.ReadInt ();
1856                                 info.line_numbers [i] = res.ReadInt ();
1857                                 if (Version.AtLeast (2, 12)) {
1858                                         int idx = res.ReadInt ();
1859                                         info.source_files [i] = idx >= 0 ? sources [idx] : default (SourceInfo);
1860                                 } else {
1861                                         info.source_files [i] = sources [0];
1862                                 }
1863                                 if (Version.AtLeast (2, 19))
1864                                         info.column_numbers [i] = res.ReadInt ();
1865                                 else
1866                                         info.column_numbers [i] = 0;
1867                                 if (Version.AtLeast (2, 32)) {
1868                                         info.end_line_numbers [i] = res.ReadInt ();
1869                                         info.end_column_numbers [i] = res.ReadInt ();
1870                                 } else {
1871                                         info.end_column_numbers [i] = -1;
1872                                         info.end_column_numbers [i] = -1;
1873                                 }
1874                         }
1875
1876                         return info;
1877                 }
1878
1879                 internal ParamInfo Method_GetParamInfo (long id) {
1880                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_PARAM_INFO, new PacketWriter ().WriteId (id));
1881
1882                         ParamInfo info = new ParamInfo ();
1883                         info.call_conv = res.ReadInt ();
1884                         info.param_count = res.ReadInt ();
1885                         info.generic_param_count = res.ReadInt ();
1886                         info.ret_type = res.ReadId ();
1887                         info.param_types = new long [info.param_count];
1888                         for (int i = 0; i < info.param_count; ++i)
1889                                 info.param_types [i] = res.ReadId ();
1890                         info.param_names = new string [info.param_count];
1891                         for (int i = 0; i < info.param_count; ++i)
1892                                 info.param_names [i] = res.ReadString ();
1893
1894                         return info;
1895                 }
1896
1897                 internal LocalsInfo Method_GetLocalsInfo (long id) {
1898                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_LOCALS_INFO, new PacketWriter ().WriteId (id));
1899
1900                         LocalsInfo info = new LocalsInfo ();
1901                         int nlocals = res.ReadInt ();
1902                         info.types = new long [nlocals];
1903                         for (int i = 0; i < nlocals; ++i)
1904                                 info.types [i] = res.ReadId ();
1905                         info.names = new string [nlocals];
1906                         for (int i = 0; i < nlocals; ++i)
1907                                 info.names [i] = res.ReadString ();
1908                         info.live_range_start = new int [nlocals];
1909                         info.live_range_end = new int [nlocals];
1910                         for (int i = 0; i < nlocals; ++i) {
1911                                 info.live_range_start [i] = res.ReadInt ();
1912                                 info.live_range_end [i] = res.ReadInt ();
1913                         }
1914
1915                         return info;
1916                 }
1917
1918                 internal MethodInfo Method_GetInfo (long id) {
1919                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_INFO, new PacketWriter ().WriteId (id));
1920
1921                         MethodInfo info = new MethodInfo ();
1922                         info.attributes = res.ReadInt ();
1923                         info.iattributes = res.ReadInt ();
1924                         info.token = res.ReadInt ();
1925                         if (Version.AtLeast (2, 12)) {
1926                                 int attrs = res.ReadByte ();
1927                                 if ((attrs & (1 << 0)) != 0)
1928                                         info.is_gmd = true;
1929                                 if ((attrs & (1 << 1)) != 0)
1930                                         info.is_generic_method = true;
1931                                 info.gmd = res.ReadId ();
1932                                 if (Version.AtLeast (2, 15)) {
1933                                         if (info.is_generic_method) {
1934                                                 int n = res.ReadInt ();
1935                                                 info.type_args = res.ReadIds (n);
1936                                         }
1937                                 }
1938                         }
1939                         return info;
1940                 }
1941
1942                 internal MethodBodyInfo Method_GetBody (long id) {
1943                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_BODY, new PacketWriter ().WriteId (id));
1944
1945                         MethodBodyInfo info = new MethodBodyInfo ();
1946                         info.il = new byte [res.ReadInt ()];
1947                         for (int i = 0; i < info.il.Length; ++i)
1948                                 info.il [i] = (byte)res.ReadByte ();
1949
1950                         if (Version.AtLeast (2, 18)) {
1951                                 info.clauses = new ExceptionClauseInfo [res.ReadInt ()];
1952
1953                                 for (int i = 0; i < info.clauses.Length; ++i) {
1954                                         var clause = new ExceptionClauseInfo {
1955                                                 flags = (ExceptionClauseFlags) res.ReadInt (),
1956                                                 try_offset = res.ReadInt (),
1957                                                 try_length = res.ReadInt (),
1958                                                 handler_offset = res.ReadInt (),
1959                                                 handler_length = res.ReadInt (),
1960                                         };
1961
1962                                         if (clause.flags == ExceptionClauseFlags.None)
1963                                                 clause.catch_type_id = res.ReadId ();
1964                                         else if (clause.flags == ExceptionClauseFlags.Filter)
1965                                                 clause.filter_offset = res.ReadInt ();
1966
1967                                         info.clauses [i] = clause;
1968                                 }
1969                         } else
1970                                 info.clauses = new ExceptionClauseInfo [0];
1971
1972                         return info;
1973                 }
1974
1975                 internal ResolvedToken Method_ResolveToken (long id, int token) {
1976                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.RESOLVE_TOKEN, new PacketWriter ().WriteId (id).WriteInt (token));
1977
1978                         TokenType type = (TokenType)res.ReadByte ();
1979                         switch (type) {
1980                         case TokenType.STRING:
1981                                 return new ResolvedToken () { Type = type, Str = res.ReadString () };
1982                         case TokenType.TYPE:
1983                         case TokenType.METHOD:
1984                         case TokenType.FIELD:
1985                                 return new ResolvedToken () { Type = type, Id = res.ReadId () };
1986                         case TokenType.UNKNOWN:
1987                                 return new ResolvedToken () { Type = type };
1988                         default:
1989                                 throw new NotImplementedException ();
1990                         }
1991                 }
1992
1993                 internal CattrInfo[] Method_GetCustomAttributes (long id, long attr_type_id, bool inherit) {
1994                         PacketReader r = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_CATTRS, new PacketWriter ().WriteId (id).WriteId (attr_type_id));
1995                         return ReadCattrs (r);
1996                 }
1997
1998                 internal long Method_MakeGenericMethod (long id, long[] args) {
1999                         PacketReader r = SendReceive (CommandSet.METHOD, (int)CmdMethod.MAKE_GENERIC_METHOD, new PacketWriter ().WriteId (id).WriteInt (args.Length).WriteIds (args));
2000                         return r.ReadId ();
2001                 }
2002
2003                 /*
2004                  * THREAD
2005                  */
2006
2007                 internal string Thread_GetName (long id) {
2008                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
2009                 }
2010
2011                 internal void Thread_GetFrameInfo (long id, int start_frame, int length, Action<FrameInfo[]> resultCallaback) {
2012                         Send (CommandSet.THREAD, (int)CmdThread.GET_FRAME_INFO, new PacketWriter ().WriteId (id).WriteInt (start_frame).WriteInt (length), (res) => {
2013                                 int count = res.ReadInt ();
2014                                 var frames = new FrameInfo[count];
2015                                 for (int i = 0; i < count; ++i) {
2016                                         var f = new FrameInfo ();
2017                                         f.id = res.ReadInt ();
2018                                         f.method = res.ReadId ();
2019                                         f.il_offset = res.ReadInt ();
2020                                         f.flags = (StackFrameFlags)res.ReadByte ();
2021                                         frames [i] = f;
2022                                 }
2023                                 resultCallaback (frames);
2024                         }, 1);
2025                 }
2026
2027                 internal int Thread_GetState (long id) {
2028                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_STATE, new PacketWriter ().WriteId (id)).ReadInt ();
2029                 }
2030
2031                 internal ThreadInfo Thread_GetInfo (long id) {
2032                         PacketReader r = SendReceive (CommandSet.THREAD, (int)CmdThread.GET_INFO, new PacketWriter ().WriteId (id));
2033
2034                         ThreadInfo res = new ThreadInfo () { is_thread_pool = r.ReadByte () > 0 ? true : false };
2035
2036                         return res;
2037                 }
2038
2039                 internal long Thread_GetId (long id) {
2040                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_ID, new PacketWriter ().WriteId (id)).ReadLong ();
2041                 }
2042
2043                 internal long Thread_GetTID (long id) {
2044                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_TID, new PacketWriter ().WriteId (id)).ReadLong ();
2045                 }
2046
2047                 internal void Thread_SetIP (long id, long method_id, long il_offset) {
2048                         SendReceive (CommandSet.THREAD, (int)CmdThread.SET_IP, new PacketWriter ().WriteId (id).WriteId (method_id).WriteLong (il_offset));
2049                 }
2050
2051                 /*
2052                  * MODULE
2053                  */
2054
2055                 internal ModuleInfo Module_GetInfo (long id) {
2056                         PacketReader r = SendReceive (CommandSet.MODULE, (int)CmdModule.GET_INFO, new PacketWriter ().WriteId (id));
2057                         ModuleInfo info = new ModuleInfo { Name = r.ReadString (), ScopeName = r.ReadString (), FQName = r.ReadString (), Guid = r.ReadString (), Assembly = r.ReadId () };
2058                         return info;
2059                 }
2060
2061                 /*
2062                  * ASSEMBLY
2063                  */
2064
2065                 internal string Assembly_GetLocation (long id) {
2066                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_LOCATION, new PacketWriter ().WriteId (id)).ReadString ();
2067                 }
2068
2069                 internal long Assembly_GetEntryPoint (long id) {
2070                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_ENTRY_POINT, new PacketWriter ().WriteId (id)).ReadId ();
2071                 }
2072
2073                 internal long Assembly_GetManifestModule (long id) {
2074                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_MANIFEST_MODULE, new PacketWriter ().WriteId (id)).ReadId ();
2075                 }
2076
2077                 internal long Assembly_GetObject (long id) {
2078                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_OBJECT, new PacketWriter ().WriteId (id)).ReadId ();
2079                 }
2080
2081                 internal long Assembly_GetType (long id, string name, bool ignoreCase) {
2082                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_TYPE, new PacketWriter ().WriteId (id).WriteString (name).WriteBool (ignoreCase)).ReadId ();
2083                 }
2084
2085                 internal string Assembly_GetName (long id) {
2086                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
2087                 }
2088
2089                 /*
2090                  * TYPE
2091                  */
2092
2093                 internal TypeInfo Type_GetInfo (long id) {
2094                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_INFO, new PacketWriter ().WriteId (id));
2095                         TypeInfo res = new TypeInfo ();
2096
2097                         res.ns = r.ReadString ();
2098                         res.name = r.ReadString ();
2099                         res.full_name = r.ReadString ();
2100                         res.assembly = r.ReadId ();
2101                         res.module = r.ReadId ();
2102                         res.base_type = r.ReadId ();
2103                         res.element_type = r.ReadId ();
2104                         res.token = r.ReadInt ();
2105                         res.rank = r.ReadByte ();
2106                         res.attributes = r.ReadInt ();
2107                         int b = r.ReadByte ();
2108                         res.is_byref = (b & 1) != 0;
2109                         res.is_pointer = (b & 2) != 0;
2110                         res.is_primitive = (b & 4) != 0;
2111                         res.is_valuetype = (b & 8) != 0;
2112                         res.is_enum = (b & 16) != 0;
2113                         res.is_gtd = (b & 32) != 0;
2114                         res.is_generic_type = (b & 64) != 0;
2115
2116                         int nested_len = r.ReadInt ();
2117                         res.nested = new long [nested_len];
2118                         for (int i = 0; i < nested_len; ++i)
2119                                 res.nested [i] = r.ReadId ();
2120
2121                         if (Version.AtLeast (2, 12))
2122                                 res.gtd = r.ReadId ();
2123                         if (Version.AtLeast (2, 15) && res.is_generic_type) {
2124                                 int n = r.ReadInt ();
2125                                 res.type_args = r.ReadIds (n);
2126                         }
2127
2128                         return res;
2129                 }
2130
2131                 internal long[] Type_GetMethods (long id) {
2132                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_METHODS, new PacketWriter ().WriteId (id));
2133
2134                         int n = r.ReadInt ();
2135                         long[] res = new long [n];
2136                         for (int i = 0; i < n; ++i)
2137                                 res [i] = r.ReadId ();
2138                         return res;
2139                 }
2140
2141                 internal long[] Type_GetFields (long id, out string[] names, out long[] types, out int[] attrs) {
2142                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_FIELDS, new PacketWriter ().WriteId (id));
2143
2144                         int n = r.ReadInt ();
2145                         long[] res = new long [n];
2146                         names = new string [n];
2147                         types = new long [n];
2148                         attrs = new int [n];
2149                         for (int i = 0; i < n; ++i) {
2150                                 res [i] = r.ReadId ();
2151                                 names [i] = r.ReadString ();
2152                                 types [i] = r.ReadId ();
2153                                 attrs [i] = r.ReadInt ();
2154                         }
2155                         return res;
2156                 }
2157
2158                 internal PropInfo[] Type_GetProperties (long id) {
2159                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_PROPERTIES, new PacketWriter ().WriteId (id));
2160
2161                         int n = r.ReadInt ();
2162                         PropInfo[] res = new PropInfo [n];
2163                         for (int i = 0; i < n; ++i) {
2164                                 res [i] = new PropInfo ();
2165                                 res [i].id = r.ReadId ();
2166                                 res [i].name = r.ReadString ();
2167                                 res [i].get_method = r.ReadId ();
2168                                 res [i].set_method = r.ReadId ();
2169                                 res [i].attrs = r.ReadInt ();
2170                         }
2171
2172                         return res;
2173                 }
2174
2175                 internal long Type_GetObject (long id) {
2176                         return SendReceive (CommandSet.TYPE, (int)CmdType.GET_OBJECT, new PacketWriter ().WriteId (id)).ReadId ();
2177                 }
2178
2179                 internal ValueImpl[] Type_GetValues (long id, long[] fields, long thread_id) {
2180                         int len = fields.Length;
2181                         PacketReader r;
2182                         if (thread_id != 0)
2183                                 r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_VALUES_2, new PacketWriter ().WriteId (id).WriteId (thread_id).WriteInt (len).WriteIds (fields));
2184                         else
2185                                 r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (len).WriteIds (fields));
2186
2187                         ValueImpl[] res = new ValueImpl [len];
2188                         for (int i = 0; i < len; ++i)
2189                                 res [i] = r.ReadValue ();
2190                         return res;
2191                 }
2192
2193                 internal void Type_SetValues (long id, long[] fields, ValueImpl[] values) {
2194                         SendReceive (CommandSet.TYPE, (int)CmdType.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (fields.Length).WriteIds (fields).WriteValues (values));
2195                 }
2196
2197                 internal string[] Type_GetSourceFiles (long id, bool return_full_paths) {
2198                         var r = SendReceive (CommandSet.TYPE, return_full_paths ? (int)CmdType.GET_SOURCE_FILES_2 : (int)CmdType.GET_SOURCE_FILES, new PacketWriter ().WriteId (id));
2199                         int len = r.ReadInt ();
2200                         string[] res = new string [len];
2201                         for (int i = 0; i < len; ++i)
2202                                 res [i] = r.ReadString ();
2203                         return res;
2204                 }
2205
2206                 internal bool Type_IsAssignableFrom (long id, long c_id) {
2207                         return SendReceive (CommandSet.TYPE, (int)CmdType.IS_ASSIGNABLE_FROM, new PacketWriter ().WriteId (id).WriteId (c_id)).ReadByte () > 0;
2208                 }
2209
2210                 internal CattrInfo[] Type_GetCustomAttributes (long id, long attr_type_id, bool inherit) {
2211                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_CATTRS, new PacketWriter ().WriteId (id).WriteId (attr_type_id));
2212                         return ReadCattrs (r);
2213                 }
2214
2215                 internal CattrInfo[] Type_GetFieldCustomAttributes (long id, long field_id, long attr_type_id, bool inherit) {
2216                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_FIELD_CATTRS, new PacketWriter ().WriteId (id).WriteId (field_id).WriteId (attr_type_id));
2217                         return ReadCattrs (r);
2218                 }
2219
2220                 internal CattrInfo[] Type_GetPropertyCustomAttributes (long id, long field_id, long attr_type_id, bool inherit) {
2221                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_PROPERTY_CATTRS, new PacketWriter ().WriteId (id).WriteId (field_id).WriteId (attr_type_id));
2222                         return ReadCattrs (r);
2223                 }
2224
2225                 public long[] Type_GetMethodsByNameFlags (long id, string name, int flags, bool ignoreCase) {
2226                         flags |= ignoreCase ? (int)BindingFlagsExtensions.BINDING_FLAGS_IGNORE_CASE : 0;
2227                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.CMD_TYPE_GET_METHODS_BY_NAME_FLAGS, new PacketWriter ().WriteId (id).WriteString (name).WriteInt (flags));
2228                         int len = r.ReadInt ();
2229                         long[] res = new long [len];
2230                         for (int i = 0; i < len; ++i)
2231                                 res [i] = r.ReadId ();
2232                         return res;
2233                 }
2234
2235                 internal long[] Type_GetInterfaces (long id) {
2236                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_INTERFACES, new PacketWriter ().WriteId (id));
2237                         int len = r.ReadInt ();
2238                         return r.ReadIds (len);
2239                 }
2240
2241                 internal IfaceMapInfo[] Type_GetInterfaceMap (long id, long[] ids) {
2242                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_INTERFACE_MAP, new PacketWriter ().WriteId (id).WriteInt (ids.Length).WriteIds (ids));
2243                         var res = new IfaceMapInfo [ids.Length];
2244                         for (int i = 0; i < ids.Length; ++i) {
2245                                 int n = r.ReadInt ();
2246
2247                                 res [i].iface_id = ids [i];
2248                                 res [i].iface_methods = r.ReadIds (n);
2249                                 res [i].target_methods = r.ReadIds (n);
2250                         }
2251
2252                         return res;
2253                 }
2254
2255                 internal bool Type_IsInitialized (long id) {
2256                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.IS_INITIALIZED, new PacketWriter ().WriteId (id));
2257                         return r.ReadInt () == 1;
2258                 }
2259
2260                 internal long Type_CreateInstance (long id) {
2261                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.CREATE_INSTANCE, new PacketWriter ().WriteId (id));
2262                         return r.ReadId ();
2263                 }
2264
2265                 /*
2266                  * FIELD
2267                  */
2268
2269                 internal FieldMirrorInfo Field_GetInfo (long id) {
2270                         PacketReader r = SendReceive (CommandSet.FIELD, (int)CmdField.GET_INFO, new PacketWriter ().WriteId (id));
2271                         FieldMirrorInfo info = new FieldMirrorInfo { Name = r.ReadString (), Parent = r.ReadId (), TypeId = r.ReadId (), Attrs = r.ReadInt () };
2272                         return info;
2273                 }
2274
2275                 /*
2276                  * EVENTS
2277                  */
2278
2279                 internal int EnableEvent (EventType etype, SuspendPolicy suspend_policy, List<Modifier> mods) {
2280                         var w = new PacketWriter ().WriteByte ((byte)etype).WriteByte ((byte)suspend_policy);
2281                         if (mods != null) {
2282                                 if (mods.Count > 255)
2283                                         throw new NotImplementedException ();
2284                                 w.WriteByte ((byte)mods.Count);
2285                                 foreach (Modifier mod in mods) {
2286                                         if (mod is CountModifier) {
2287                                                 w.WriteByte ((byte)ModifierKind.COUNT);
2288                                                 w.WriteInt ((mod as CountModifier).Count);
2289                                         } else if (mod is LocationModifier) {
2290                                                 w.WriteByte ((byte)ModifierKind.LOCATION_ONLY);
2291                                                 w.WriteId ((mod as LocationModifier).Method);
2292                                                 w.WriteLong ((mod as LocationModifier).Location);
2293                                         } else if (mod is StepModifier) {
2294                                                 w.WriteByte ((byte)ModifierKind.STEP);
2295                                                 w.WriteId ((mod as StepModifier).Thread);
2296                                                 w.WriteInt ((mod as StepModifier).Size);
2297                                                 w.WriteInt ((mod as StepModifier).Depth);
2298                                                 if (Version.AtLeast (2, 16))
2299                                                         w.WriteInt ((mod as StepModifier).Filter);
2300                                         } else if (mod is ThreadModifier) {
2301                                                 w.WriteByte ((byte)ModifierKind.THREAD_ONLY);
2302                                                 w.WriteId ((mod as ThreadModifier).Thread);
2303                                         } else if (mod is ExceptionModifier) {
2304                                                 var em = mod as ExceptionModifier;
2305                                                 w.WriteByte ((byte)ModifierKind.EXCEPTION_ONLY);
2306                                                 w.WriteId (em.Type);
2307                                                 if (Version.MajorVersion > 2 || Version.MinorVersion > 0) {
2308                                                         /* This is only supported in protocol version 2.1 */
2309                                                         w.WriteBool (em.Caught);
2310                                                         w.WriteBool (em.Uncaught);
2311                                                 } else if (!em.Caught || !em.Uncaught) {
2312                                                         throw new NotSupportedException ("This request is not supported by the protocol version implemented by the debuggee.");
2313                                                 }
2314                                                 if (Version.MajorVersion > 2 || Version.MinorVersion > 24) {
2315                                                         w.WriteBool (em.Subclasses);
2316                                                 } else if (!em.Subclasses) {
2317                                                         throw new NotSupportedException ("This request is not supported by the protocol version implemented by the debuggee.");
2318                                                 }
2319                                         } else if (mod is AssemblyModifier) {
2320                                                 w.WriteByte ((byte)ModifierKind.ASSEMBLY_ONLY);
2321                                                 var amod = (mod as AssemblyModifier);
2322                                                 w.WriteInt (amod.Assemblies.Length);
2323                                                 foreach (var id in amod.Assemblies)
2324                                                         w.WriteId (id);
2325                                         } else if (mod is SourceFileModifier) {
2326                                                 w.WriteByte ((byte)ModifierKind.SOURCE_FILE_ONLY);
2327                                                 var smod = (mod as SourceFileModifier);
2328                                                 w.WriteInt (smod.SourceFiles.Length);
2329                                                 foreach (var s in smod.SourceFiles)
2330                                                         w.WriteString (s);
2331                                         } else if (mod is TypeNameModifier) {
2332                                                 w.WriteByte ((byte)ModifierKind.TYPE_NAME_ONLY);
2333                                                 var tmod = (mod as TypeNameModifier);
2334                                                 w.WriteInt (tmod.TypeNames.Length);
2335                                                 foreach (var s in tmod.TypeNames)
2336                                                         w.WriteString (s);
2337                                         } else {
2338                                                 throw new NotImplementedException ();
2339                                         }
2340                                 }
2341                         } else {
2342                                 w.WriteByte (0);
2343                         }
2344                         return SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.SET, w).ReadInt ();
2345                 }
2346
2347                 internal void ClearEventRequest (EventType etype, int req_id) {
2348                         SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.CLEAR, new PacketWriter ().WriteByte ((byte)etype).WriteInt (req_id));
2349                 }
2350
2351                 internal void ClearAllBreakpoints () {
2352                         SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.CLEAR_ALL_BREAKPOINTS, new PacketWriter ());
2353                 }
2354
2355                 /*
2356                  * STACK FRAME
2357                  */
2358                 internal ValueImpl StackFrame_GetThis (long thread_id, long id) {
2359                         PacketReader r = SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.GET_THIS, new PacketWriter ().WriteId (thread_id).WriteId (id));
2360                         return r.ReadValue ();
2361                 }
2362
2363                 internal ValueImpl[] StackFrame_GetValues (long thread_id, long id, int[] pos) {
2364                         /* pos < 0 -> argument at pos (-pos) - 1 */
2365                         /* pos >= 0 -> local at pos */
2366                         int len = pos.Length;
2367                         PacketReader r = SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.GET_VALUES, new PacketWriter ().WriteId (thread_id).WriteId (id).WriteInt (len).WriteInts (pos));
2368
2369                         ValueImpl[] res = new ValueImpl [len];
2370                         for (int i = 0; i < len; ++i)
2371                                 res [i] = r.ReadValue ();
2372                         return res;
2373                 }
2374
2375                 internal void StackFrame_SetValues (long thread_id, long id, int[] pos, ValueImpl[] values) {
2376                         /* pos < 0 -> argument at pos (-pos) - 1 */
2377                         /* pos >= 0 -> local at pos */
2378                         int len = pos.Length;
2379                         SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.SET_VALUES, new PacketWriter ().WriteId (thread_id).WriteId (id).WriteInt (len).WriteInts (pos).WriteValues (values));
2380                 }
2381
2382                 internal long StackFrame_GetDomain (long thread_id, long id) {
2383                         return SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.GET_DOMAIN, new PacketWriter ().WriteId (thread_id).WriteId (id)).ReadId ();
2384                 }
2385
2386                 /*
2387                  * ARRAYS
2388                  */
2389                 internal int[] Array_GetLength (long id, out int rank, out int[] lower_bounds) {
2390                         var r = SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.GET_LENGTH, new PacketWriter ().WriteId (id));
2391                         rank = r.ReadInt ();
2392                         int[] res = new int [rank];
2393                         lower_bounds = new int [rank];
2394                         for (int i = 0; i < rank; ++i) {
2395                                 res [i] = r.ReadInt ();
2396                                 lower_bounds [i] = r.ReadInt ();
2397                         }
2398                         return res;
2399                 }
2400
2401                 internal ValueImpl[] Array_GetValues (long id, int index, int len) {
2402                         var r = SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (index).WriteInt (len));
2403                         ValueImpl[] res = new ValueImpl [len];
2404                         for (int i = 0; i < len; ++i)
2405                                 res [i] = r.ReadValue ();
2406                         return res;
2407                 }
2408
2409                 internal void Array_SetValues (long id, int index, ValueImpl[] values) {
2410                         SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (index).WriteInt (values.Length).WriteValues (values));
2411                 }
2412
2413                 /*
2414                  * STRINGS
2415                  */
2416                 internal string String_GetValue (long id) {
2417                         return SendReceive (CommandSet.STRING_REF, (int)CmdStringRef.GET_VALUE, new PacketWriter ().WriteId (id)).ReadString ();
2418                 }
2419
2420                 internal int String_GetLength (long id) {
2421                         return (int)SendReceive (CommandSet.STRING_REF, (int)CmdStringRef.GET_LENGTH, new PacketWriter ().WriteId (id)).ReadLong ();
2422                 }
2423
2424                 internal char[] String_GetChars (long id, int index, int length) {
2425                         var r = SendReceive (CommandSet.STRING_REF, (int)CmdStringRef.GET_CHARS, new PacketWriter ().WriteId (id).WriteLong (index).WriteLong (length));
2426                         var res = new char [length];
2427                         for (int i = 0; i < length; ++i)
2428                                 res [i] = (char)r.ReadShort ();
2429                         return res;
2430                 }
2431
2432                 /*
2433                  * OBJECTS
2434                  */
2435                 internal long Object_GetType (long id) {
2436                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_TYPE, new PacketWriter ().WriteId (id)).ReadId ();
2437                 }
2438
2439                 internal long Object_GetDomain (long id) {
2440                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_DOMAIN, new PacketWriter ().WriteId (id)).ReadId ();
2441                 }
2442
2443                 internal ValueImpl[] Object_GetValues (long id, long[] fields) {
2444                         int len = fields.Length;
2445                         PacketReader r = SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (len).WriteIds (fields));
2446
2447                         ValueImpl[] res = new ValueImpl [len];
2448                         for (int i = 0; i < len; ++i)
2449                                 res [i] = r.ReadValue ();
2450                         return res;
2451                 }
2452
2453                 internal void Object_SetValues (long id, long[] fields, ValueImpl[] values) {
2454                         SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (fields.Length).WriteIds (fields).WriteValues (values));
2455                 }
2456
2457                 internal bool Object_IsCollected (long id) {
2458                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.IS_COLLECTED, new PacketWriter ().WriteId (id)).ReadInt () == 1;
2459                 }
2460
2461                 internal long Object_GetAddress (long id) {
2462                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_ADDRESS, new PacketWriter ().WriteId (id)).ReadLong ();
2463                 }
2464
2465                 internal ObjectRefInfo Object_GetInfo (long id) {
2466                         ObjectRefInfo res = new ObjectRefInfo ();
2467                         PacketReader r = SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_INFO, new PacketWriter ().WriteId (id));
2468
2469                         res.type_id = r.ReadId ();
2470                         res.domain_id = r.ReadId ();
2471                         return res;
2472                 }
2473
2474                 public void ForceDisconnect ()
2475                 {
2476                         closed = true;
2477                         disconnected = true;
2478                         TransportClose ();
2479                 }
2480         }
2481
2482         class TcpConnection : Connection
2483         {
2484                 Socket socket;
2485
2486                 internal TcpConnection (Socket socket)
2487                 {
2488                         this.socket = socket;
2489                         //socket.SetSocketOption (SocketOptionLevel.IP, SocketOptionName.NoDelay, 1);
2490                 }
2491
2492                 internal EndPoint EndPoint {
2493                         get {
2494                                 return socket.RemoteEndPoint;
2495                         }
2496                 }
2497
2498                 protected override int TransportSend (byte[] buf, int buf_offset, int len)
2499                 {
2500                         return socket.Send (buf, buf_offset, len, SocketFlags.None);
2501                 }
2502
2503                 protected override int TransportReceive (byte[] buf, int buf_offset, int len)
2504                 {
2505                         return socket.Receive (buf, buf_offset, len, SocketFlags.None);
2506                 }
2507
2508                 protected override void TransportSetTimeouts (int send_timeout, int receive_timeout)
2509                 {
2510                         socket.SendTimeout = send_timeout;
2511                         socket.ReceiveTimeout = receive_timeout;
2512                 }
2513
2514                 protected override void TransportClose ()
2515                 {
2516                         socket.Close ();
2517                 }
2518         }
2519
2520         /* This is the interface exposed by the debugger towards the debugger agent */
2521         interface IEventHandler
2522         {
2523                 void Events (SuspendPolicy suspend_policy, EventInfo[] events);
2524
2525                 void VMDisconnect (int req_id, long thread_id, string vm_uri);
2526         }
2527 }