mcs/class/corlib/System.Runtime.InteropServices/Marshal.cs

   1 // System.Runtime.InteropServices.Marshal.cs
   2 //
   3 // Sean MacIsaac (macisaac@ximian.com)
   4 // Paolo Molaro (lupus@ximian.com)
   5 // Dietmar Maurer (dietmar@ximian.com)
   6 // Jonathan Chambers (joncham@gmail.com)
   7 //
   8 // (C) 2001-2002 Ximian, Inc.
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.Collections;
  34 using System.Collections.Generic;
  35 using System.Runtime.CompilerServices;
  36 using System;
  37 using System.Security;
  38 using System.Reflection;
  39 using System.Threading;
  40
  41 using System.Runtime.ConstrainedExecution;
  42 #if !FULL_AOT_RUNTIME
  43 using System.Runtime.InteropServices.ComTypes;
  44 using Mono.Interop;
  45 #endif
  46
  47 namespace System.Runtime.InteropServices
  48 {
  49         public static class Marshal
  50         {
  51                 /* fields */
  52                 public static readonly int SystemMaxDBCSCharSize = 2; // don't know what this is
  53                 public static readonly int SystemDefaultCharSize = Environment.IsRunningOnWindows ? 2 : 1;
  54
  55 #if !MOBILE
  56                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  57                 private extern static int AddRefInternal (IntPtr pUnk);
  58 #endif
  59
  60                 public static int AddRef (IntPtr pUnk)
  61                 {
  62 #if !MOBILE
  63                         if (pUnk == IntPtr.Zero)
  64                                 throw new ArgumentException ("Value cannot be null.", "pUnk");
  65                         return AddRefInternal (pUnk);
  66 #else
  67                         throw new NotImplementedException ();
  68 #endif
  69                 }
  70
  71                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  72                 public extern static IntPtr AllocCoTaskMem (int cb);
  73
  74                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  75                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
  76                 public extern static IntPtr AllocHGlobal (IntPtr cb);
  77
  78                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
  79                 public static IntPtr AllocHGlobal (int cb)
  80                 {
  81                         return AllocHGlobal ((IntPtr)cb);
  82                 }
  83
  84                 [MonoTODO]
  85                 public static object BindToMoniker (string monikerName)
  86                 {
  87                         throw new NotImplementedException ();
  88                 }
  89
  90                 [MonoTODO]
  91                 public static void ChangeWrapperHandleStrength (object otp, bool fIsWeak)
  92                 {
  93                         throw new NotImplementedException ();
  94                 }
  95
  96                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  97                 internal extern static void copy_to_unmanaged (Array source, int startIndex,
  98                                                                IntPtr destination, int length);
  99
 100                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 101                 internal extern static void copy_from_unmanaged (IntPtr source, int startIndex,
 102                                                                  Array destination, int length);
 103
 104                 public static void Copy (byte[] source, int startIndex, IntPtr destination, int length)
 105                 {
 106                         copy_to_unmanaged (source, startIndex, destination, length);
 107                 }
 108
 109                 public static void Copy (char[] source, int startIndex, IntPtr destination, int length)
 110                 {
 111                         copy_to_unmanaged (source, startIndex, destination, length);
 112                 }
 113
 114                 public static void Copy (short[] source, int startIndex, IntPtr destination, int length)
 115                 {
 116                         copy_to_unmanaged (source, startIndex, destination, length);
 117                 }
 118
 119                 public static void Copy (int[] source, int startIndex, IntPtr destination, int length)
 120                 {
 121                         copy_to_unmanaged (source, startIndex, destination, length);
 122                 }
 123
 124                 public static void Copy (long[] source, int startIndex, IntPtr destination, int length)
 125                 {
 126                         copy_to_unmanaged (source, startIndex, destination, length);
 127                 }
 128
 129                 public static void Copy (float[] source, int startIndex, IntPtr destination, int length)
 130                 {
 131                         copy_to_unmanaged (source, startIndex, destination, length);
 132                 }
 133
 134                 public static void Copy (double[] source, int startIndex, IntPtr destination, int length)
 135                 {
 136                         copy_to_unmanaged (source, startIndex, destination, length);
 137                 }
 138
 139                 public static void Copy (IntPtr[] source, int startIndex, IntPtr destination, int length)
 140                 {
 141                         copy_to_unmanaged (source, startIndex, destination, length);
 142                 }
 143
 144                 public static void Copy (IntPtr source, byte[] destination, int startIndex, int length)
 145                 {
 146                         copy_from_unmanaged (source, startIndex, destination, length);
 147                 }
 148
 149                 public static void Copy (IntPtr source, char[] destination, int startIndex, int length)
 150                 {
 151                         copy_from_unmanaged (source, startIndex, destination, length);
 152                 }
 153
 154                 public static void Copy (IntPtr source, short[] destination, int startIndex, int length)
 155                 {
 156                         copy_from_unmanaged (source, startIndex, destination, length);
 157                 }
 158
 159                 public static void Copy (IntPtr source, int[] destination, int startIndex, int length)
 160                 {
 161                         copy_from_unmanaged (source, startIndex, destination, length);
 162                 }
 163
 164                 public static void Copy (IntPtr source, long[] destination, int startIndex, int length)
 165                 {
 166                         copy_from_unmanaged (source, startIndex, destination, length);
 167                 }
 168
 169                 public static void Copy (IntPtr source, float[] destination, int startIndex, int length)
 170                 {
 171                         copy_from_unmanaged (source, startIndex, destination, length);
 172                 }
 173
 174                 public static void Copy (IntPtr source, double[] destination, int startIndex, int length)
 175                 {
 176                         copy_from_unmanaged (source, startIndex, destination, length);
 177                 }
 178
 179                 public static void Copy (IntPtr source, IntPtr[] destination, int startIndex, int length)
 180                 {
 181                         copy_from_unmanaged (source, startIndex, destination, length);
 182                 }
 183
 184                 public static IntPtr CreateAggregatedObject (IntPtr pOuter,
 185                                                              object o)
 186                 {
 187                         throw new NotImplementedException ();
 188                 }
 189
 190 #if NET_4_5
 191                 public static IntPtr CreateAggregatedObject<T> (IntPtr pOuter, T o) {
 192                         return CreateAggregatedObject (pOuter, (object)o);
 193                 }
 194 #endif
 195
 196 #if !FULL_AOT_RUNTIME
 197                 public static object CreateWrapperOfType (object o, Type t)
 198                 {
 199                         __ComObject co = o as __ComObject;
 200                         if (co == null)
 201                                 throw new ArgumentException ("o must derive from __ComObject", "o");
 202                         if (t == null)
 203                                 throw new ArgumentNullException ("t");
 204
 205                         Type[] itfs = o.GetType ().GetInterfaces ();
 206                         foreach (Type itf in itfs) {
 207                                 if (itf.IsImport && co.GetInterface (itf) == IntPtr.Zero)
 208                                         throw new InvalidCastException ();
 209                         }
 210
 211                         return ComInteropProxy.GetProxy (co.IUnknown, t).GetTransparentProxy ();
 212                 }
 213
 214 #if NET_4_5
 215                 public static TWrapper CreateWrapperOfType<T, TWrapper> (T o) {
 216                         return (TWrapper)CreateWrapperOfType ((object)o, typeof (TWrapper));
 217                 }
 218 #endif
 219 #endif
 220
 221                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 222                 [ComVisible (true)]
 223                 public extern static void DestroyStructure (IntPtr ptr, Type structuretype);
 224
 225 #if NET_4_5
 226                 public static void DestroyStructure<T> (IntPtr ptr) {
 227                         DestroyStructure (ptr, typeof (T));
 228                 }
 229 #endif
 230
 231                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 232                 public extern static void FreeBSTR (IntPtr ptr);
 233
 234                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 235                 public extern static void FreeCoTaskMem (IntPtr ptr);
 236
 237                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 238                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 239                 public extern static void FreeHGlobal (IntPtr hglobal);
 240
 241                 static void ClearBSTR (IntPtr ptr)
 242                 {
 243                         int len = ReadInt32 (ptr, -4);
 244
 245                         for (int i = 0; i < len; i++)
 246                                 WriteByte (ptr, i, 0);
 247                 }
 248
 249                 public static void ZeroFreeBSTR (IntPtr s)
 250                 {
 251                         ClearBSTR (s);
 252                         FreeBSTR (s);
 253                 }
 254
 255                 static void ClearAnsi (IntPtr ptr)
 256                 {
 257                         for (int i = 0; ReadByte (ptr, i) != 0; i++)
 258                                 WriteByte (ptr, i, 0);
 259                 }
 260
 261                 static void ClearUnicode (IntPtr ptr)
 262                 {
 263                         for (int i = 0; ReadInt16 (ptr, i) != 0; i += 2)
 264                                 WriteInt16 (ptr, i, 0);
 265                 }
 266
 267                 public static void ZeroFreeCoTaskMemAnsi (IntPtr s)
 268                 {
 269                         ClearAnsi (s);
 270                         FreeCoTaskMem (s);
 271                 }
 272
 273                 public static void ZeroFreeCoTaskMemUnicode (IntPtr s)
 274                 {
 275                         ClearUnicode (s);
 276                         FreeCoTaskMem (s);
 277                 }
 278
 279                 public static void ZeroFreeGlobalAllocAnsi (IntPtr s)
 280                 {
 281                         ClearAnsi (s);
 282                         FreeHGlobal (s);
 283                 }
 284
 285                 public static void ZeroFreeGlobalAllocUnicode (IntPtr s)
 286                 {
 287                         ClearUnicode (s);
 288                         FreeHGlobal (s);
 289                 }
 290
 291 #if !FULL_AOT_RUNTIME
 292                 public static Guid GenerateGuidForType (Type type)
 293                 {
 294                         return type.GUID;
 295                 }
 296
 297                 public static string GenerateProgIdForType (Type type)
 298                 {
 299                         IList<CustomAttributeData> attrs = CustomAttributeData.GetCustomAttributes (type);
 300
 301                         foreach (var a in attrs)
 302                         {
 303                                 var dt = a.Constructor.DeclaringType;
 304                                 string name = dt.Name;
 305                                 if (name == "ProgIdAttribute")
 306                                 {
 307                                         var args = a.ConstructorArguments;
 308                                         string text = a.ConstructorArguments[0].Value as string;
 309                                         if (text == null)
 310                                         {
 311                                                 text = string.Empty;
 312                                         }
 313                                         return text;
 314                                 }
 315                         }
 316
 317                         return type.FullName;
 318                 }
 319
 320                 [MonoTODO]
 321                 public static object GetActiveObject (string progID)
 322                 {
 323                         throw new NotImplementedException ();
 324                 }
 325
 326 #if !MOBILE
 327                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 328                 private extern static IntPtr GetCCW (object o, Type T);
 329
 330                 private static IntPtr GetComInterfaceForObjectInternal (object o, Type T)
 331                 {
 332                         if (IsComObject (o))
 333                                 return ((__ComObject)o).GetInterface (T);
 334                         else
 335                                 return GetCCW (o, T);
 336                 }
 337 #endif
 338
 339                 public static IntPtr GetComInterfaceForObject (object o, Type T)
 340                 {
 341 #if !MOBILE
 342                         IntPtr pItf = GetComInterfaceForObjectInternal (o, T);
 343                         AddRef (pItf);
 344                         return pItf;
 345 #else
 346                         throw new NotImplementedException ();
 347 #endif
 348                 }
 349
 350 #if NET_4_5
 351                 public static IntPtr GetComInterfaceForObject<T, TInterface> (T o) {
 352                         return GetComInterfaceForObject ((object)o, typeof (T));
 353                 }
 354 #endif
 355
 356                 [MonoTODO]
 357                 public static IntPtr GetComInterfaceForObjectInContext (object o, Type t)
 358                 {
 359                         throw new NotImplementedException ();
 360                 }
 361
 362                 [MonoNotSupportedAttribute ("MSDN states user code should never need to call this method.")]
 363                 public static object GetComObjectData (object obj, object key)
 364                 {
 365                         throw new NotSupportedException ("MSDN states user code should never need to call this method.");
 366                 }
 367
 368 #if !MOBILE
 369                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 370                 private extern static int GetComSlotForMethodInfoInternal (MemberInfo m);
 371 #endif
 372
 373                 public static int GetComSlotForMethodInfo (MemberInfo m)
 374                 {
 375 #if !MOBILE
 376                         if (m == null)
 377                                 throw new ArgumentNullException ("m");
 378                         if (!(m is MethodInfo))
 379                                 throw new ArgumentException ("The MemberInfo must be an interface method.", "m");
 380                         if (!m.DeclaringType.IsInterface)
 381                                 throw new ArgumentException ("The MemberInfo must be an interface method.", "m");
 382                         return GetComSlotForMethodInfoInternal (m);
 383 #else
 384                         throw new NotImplementedException ();
 385 #endif
 386                 }
 387
 388                 [MonoTODO]
 389                 public static int GetEndComSlot (Type t)
 390                 {
 391                         throw new NotImplementedException ();
 392                 }
 393
 394                 [MonoTODO]
 395                 public static int GetExceptionCode()
 396                 {
 397                         throw new NotImplementedException ();
 398                 }
 399
 400                 [MonoTODO]
 401                 [ComVisible (true)]
 402                 public static IntPtr GetExceptionPointers()
 403                 {
 404                         throw new NotImplementedException ();
 405                 }
 406
 407                 public static IntPtr GetHINSTANCE (Module m)
 408                 {
 409                         if (m == null)
 410                                 throw new ArgumentNullException ("m");
 411
 412                         return m.GetHINSTANCE ();
 413                 }
 414 #endif // !FULL_AOT_RUNTIME
 415
 416 #if !FULL_AOT_RUNTIME
 417                 [MonoTODO ("SetErrorInfo")]
 418                 public static int GetHRForException (Exception e)
 419                 {
 420                         return e.hresult;
 421                 }
 422
 423                 [MonoTODO]
 424                 [ReliabilityContract (Consistency.WillNotCorruptState, Cer.Success)]
 425                 public static int GetHRForLastWin32Error()
 426                 {
 427                         throw new NotImplementedException ();
 428                 }
 429
 430                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 431                 private extern static IntPtr GetIDispatchForObjectInternal (object o);
 432
 433                 public static IntPtr GetIDispatchForObject (object o)
 434                 {
 435                         IntPtr pUnk = GetIDispatchForObjectInternal (o);
 436                         // Internal method does not AddRef
 437                         AddRef (pUnk);
 438                         return pUnk;
 439                 }
 440
 441                 [MonoTODO]
 442                 public static IntPtr GetIDispatchForObjectInContext (object o)
 443                 {
 444                         throw new NotImplementedException ();
 445                 }
 446
 447                 [MonoTODO]
 448                 public static IntPtr GetITypeInfoForType (Type t)
 449                 {
 450                         throw new NotImplementedException ();
 451                 }
 452
 453                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 454                 private extern static IntPtr GetIUnknownForObjectInternal (object o);
 455
 456                 public static IntPtr GetIUnknownForObject (object o)
 457                 {
 458                         IntPtr pUnk = GetIUnknownForObjectInternal (o);
 459                         // Internal method does not AddRef
 460                         AddRef (pUnk);
 461                         return pUnk;
 462                 }
 463
 464                 [MonoTODO]
 465                 public static IntPtr GetIUnknownForObjectInContext (object o)
 466                 {
 467                         throw new NotImplementedException ();
 468                 }
 469
 470                 [MonoTODO]
 471                 [Obsolete ("This method has been deprecated")]
 472                 public static IntPtr GetManagedThunkForUnmanagedMethodPtr (IntPtr pfnMethodToWrap, IntPtr pbSignature, int cbSignature)
 473                 {
 474                         throw new NotImplementedException ();
 475                 }
 476
 477                 [MonoTODO]
 478                 public static MemberInfo GetMethodInfoForComSlot (Type t, int slot, ref ComMemberType memberType)
 479                 {
 480                         throw new NotImplementedException ();
 481                 }
 482
 483                 public static void GetNativeVariantForObject (object obj, IntPtr pDstNativeVariant)
 484                 {
 485                         Variant vt = new Variant();
 486                         vt.SetValue(obj);
 487                         Marshal.StructureToPtr(vt, pDstNativeVariant, false);
 488                 }
 489
 490 #if NET_4_5
 491                 public static void GetNativeVariantForObject<T> (T obj, IntPtr pDstNativeVariant) {
 492                         GetNativeVariantForObject ((object)obj, pDstNativeVariant);
 493                 }
 494 #endif
 495
 496 #if !MOBILE
 497                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 498                 private static extern object GetObjectForCCW (IntPtr pUnk);
 499 #endif
 500
 501                 public static object GetObjectForIUnknown (IntPtr pUnk)
 502                 {
 503 #if !MOBILE
 504                         object obj = GetObjectForCCW (pUnk);
 505                         // was not a CCW
 506                         if (obj == null) {
 507                                 ComInteropProxy proxy = ComInteropProxy.GetProxy (pUnk, typeof (__ComObject));
 508                                 obj = proxy.GetTransparentProxy ();
 509                         }
 510                         return obj;
 511 #else
 512                         throw new NotImplementedException ();
 513 #endif
 514                 }
 515
 516                 public static object GetObjectForNativeVariant (IntPtr pSrcNativeVariant)
 517                 {
 518                         Variant vt = (Variant)Marshal.PtrToStructure(pSrcNativeVariant, typeof(Variant));
 519                         return vt.GetValue();
 520                 }
 521
 522 #if NET_4_5
 523                 public static T GetObjectForNativeVariant<T> (IntPtr pSrcNativeVariant) {
 524                         Variant vt = (Variant)Marshal.PtrToStructure(pSrcNativeVariant, typeof(Variant));
 525                         return (T)vt.GetValue();
 526                 }
 527 #endif
 528
 529                 public static object[] GetObjectsForNativeVariants (IntPtr aSrcNativeVariant, int cVars)
 530                 {
 531                         if (cVars < 0)
 532                                 throw new ArgumentOutOfRangeException ("cVars", "cVars cannot be a negative number.");
 533                         object[] objects = new object[cVars];
 534                         for (int i = 0; i < cVars; i++)
 535                                 objects[i] = GetObjectForNativeVariant ((IntPtr)(aSrcNativeVariant.ToInt64 () +
 536                                         i * SizeOf (typeof(Variant))));
 537                         return objects;
 538                 }
 539
 540 #if NET_4_5
 541                 public static T[] GetObjectsForNativeVariants<T> (IntPtr aSrcNativeVariant, int cVars) {
 542                         if (cVars < 0)
 543                                 throw new ArgumentOutOfRangeException ("cVars", "cVars cannot be a negative number.");
 544                         T[] objects = new T[cVars];
 545                         for (int i = 0; i < cVars; i++)
 546                                 objects[i] = GetObjectForNativeVariant<T> ((IntPtr)(aSrcNativeVariant.ToInt64 () +
 547                                         i * SizeOf (typeof(Variant))));
 548                         return objects;
 549                 }
 550 #endif
 551
 552                 [MonoTODO]
 553                 public static int GetStartComSlot (Type t)
 554                 {
 555                         throw new NotImplementedException ();
 556                 }
 557
 558                 [MonoTODO]
 559                 [Obsolete ("This method has been deprecated")]
 560                 public static Thread GetThreadFromFiberCookie (int cookie)
 561                 {
 562                         throw new NotImplementedException ();
 563                 }
 564
 565                 public static object GetTypedObjectForIUnknown (IntPtr pUnk, Type t)
 566                 {
 567                         ComInteropProxy proxy = new ComInteropProxy (pUnk, t);
 568                         __ComObject co = (__ComObject)proxy.GetTransparentProxy ();
 569                         foreach (Type itf in t.GetInterfaces ()) {
 570                                 if ((itf.Attributes & TypeAttributes.Import) == TypeAttributes.Import) {
 571                                         if (co.GetInterface (itf) == IntPtr.Zero)
 572                                                 return null;
 573                                 }
 574                         }
 575                         return co;
 576                 }
 577
 578                 [MonoTODO]
 579                 public static Type GetTypeForITypeInfo (IntPtr piTypeInfo)
 580                 {
 581                         throw new NotImplementedException ();
 582                 }
 583
 584 #if !FULL_AOT_RUNTIME
 585                 [Obsolete]
 586                 [MonoTODO]
 587                 public static string GetTypeInfoName (UCOMITypeInfo pTI)
 588                 {
 589                         throw new NotImplementedException ();
 590                 }
 591
 592                 public static string GetTypeInfoName (ITypeInfo typeInfo)
 593                 {
 594                         throw new NotImplementedException ();
 595                 }
 596
 597                 [Obsolete]
 598                 [MonoTODO]
 599                 public static Guid GetTypeLibGuid (UCOMITypeLib pTLB)
 600                 {
 601                         throw new NotImplementedException ();
 602                 }
 603
 604                 [MonoTODO]
 605                 public static Guid GetTypeLibGuid (ITypeLib typelib)
 606                 {
 607                         throw new NotImplementedException ();
 608                 }
 609
 610                 [MonoTODO]
 611                 public static Guid GetTypeLibGuidForAssembly (Assembly asm)
 612                 {
 613                         throw new NotImplementedException ();
 614                 }
 615
 616                 [Obsolete]
 617                 [MonoTODO]
 618                 public static int GetTypeLibLcid (UCOMITypeLib pTLB)
 619                 {
 620                         throw new NotImplementedException ();
 621                 }
 622
 623                 [MonoTODO]
 624                 public static int GetTypeLibLcid (ITypeLib typelib)
 625                 {
 626                         throw new NotImplementedException ();
 627                 }
 628
 629                 [Obsolete]
 630                 [MonoTODO]
 631                 public static string GetTypeLibName (UCOMITypeLib pTLB)
 632                 {
 633                         throw new NotImplementedException ();
 634                 }
 635
 636                 [MonoTODO]
 637                 public static string GetTypeLibName (ITypeLib typelib)
 638                 {
 639                         throw new NotImplementedException ();
 640                 }
 641
 642                 [MonoTODO]
 643                 public static void GetTypeLibVersionForAssembly (Assembly inputAssembly, out int majorVersion, out int minorVersion)
 644                 {
 645                         throw new NotImplementedException ();
 646                 }
 647
 648                 public static object GetUniqueObjectForIUnknown (IntPtr unknown)
 649                 {
 650                         throw new NotImplementedException ();
 651                 }
 652 #endif
 653
 654                 [MonoTODO]
 655                 [Obsolete ("This method has been deprecated")]
 656                 public static IntPtr GetUnmanagedThunkForManagedMethodPtr (IntPtr pfnMethodToWrap, IntPtr pbSignature, int cbSignature)
 657                 {
 658                         throw new NotImplementedException ();
 659                 }
 660
 661 #if !MOBILE
 662                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 663                 public extern static bool IsComObject (object o);
 664 #else
 665                 public static bool IsComObject (object o)
 666                 {
 667                         throw new NotImplementedException ();
 668                 }
 669 #endif
 670
 671                 [MonoTODO]
 672                 public static bool IsTypeVisibleFromCom (Type t)
 673                 {
 674                         throw new NotImplementedException ();
 675                 }
 676
 677                 [MonoTODO]
 678                 public static int NumParamBytes (MethodInfo m)
 679                 {
 680                         throw new NotImplementedException ();
 681                 }
 682 #endif
 683
 684                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 685                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 686                 public static extern int GetLastWin32Error();
 687
 688                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 689                 public extern static IntPtr OffsetOf (Type t, string fieldName);
 690
 691 #if NET_4_5
 692                 public static IntPtr OffsetOf<T> (string fieldName) {
 693                         return OffsetOf (typeof (T), fieldName);
 694                 }
 695 #endif
 696
 697                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 698                 public extern static void Prelink (MethodInfo m);
 699
 700                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 701                 public extern static void PrelinkAll (Type c);
 702
 703                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 704                 public extern static string PtrToStringAnsi (IntPtr ptr);
 705
 706                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 707                 public extern static string PtrToStringAnsi (IntPtr ptr, int len);
 708
 709                 public static string PtrToStringAuto (IntPtr ptr)
 710                 {
 711                         return SystemDefaultCharSize == 2
 712                                 ? PtrToStringUni (ptr) : PtrToStringAnsi (ptr);
 713                 }
 714
 715                 public static string PtrToStringAuto (IntPtr ptr, int len)
 716                 {
 717                         return SystemDefaultCharSize == 2
 718                                 ? PtrToStringUni (ptr, len) : PtrToStringAnsi (ptr, len);
 719                 }
 720
 721                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 722                 public extern static string PtrToStringUni (IntPtr ptr);
 723
 724                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 725                 public extern static string PtrToStringUni (IntPtr ptr, int len);
 726
 727 #if !MOBILE
 728                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 729                 public extern static string PtrToStringBSTR (IntPtr ptr);
 730 #else
 731                 public static string PtrToStringBSTR (IntPtr ptr)
 732                 {
 733                         throw new NotImplementedException ();
 734                 }
 735 #endif
 736
 737                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 738                 [ComVisible (true)]
 739                 public extern static void PtrToStructure (IntPtr ptr, object structure);
 740
 741                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 742                 [ComVisible (true)]
 743                 public extern static object PtrToStructure (IntPtr ptr, Type structureType);
 744
 745 #if NET_4_5
 746                 public static void PtrToStructure<T> (IntPtr ptr, T structure) {
 747                         PtrToStructure (ptr, (object)structure);
 748                 }
 749
 750                 public static object PtrToStructure<T> (IntPtr ptr) {
 751                         return PtrToStructure (ptr, typeof (T));
 752                 }
 753 #endif
 754
 755 #if !MOBILE
 756                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 757                 private extern static int QueryInterfaceInternal (IntPtr pUnk, ref Guid iid, out IntPtr ppv);
 758 #endif
 759
 760                 public static int QueryInterface (IntPtr pUnk, ref Guid iid, out IntPtr ppv)
 761                 {
 762 #if !MOBILE
 763                         if (pUnk == IntPtr.Zero)
 764                                 throw new ArgumentException ("Value cannot be null.", "pUnk");
 765                         return QueryInterfaceInternal (pUnk, ref iid, out ppv);
 766 #else
 767                         throw new NotImplementedException ();
 768 #endif
 769                 }
 770
 771                 public static byte ReadByte (IntPtr ptr)
 772                 {
 773                         unsafe {
 774                                 return *(byte*)ptr;
 775                         }
 776                 }
 777
 778                 public static byte ReadByte (IntPtr ptr, int ofs) {
 779                         unsafe {
 780                                 return *((byte*)ptr + ofs);
 781                         }
 782                 }
 783
 784                 [MonoTODO]
 785                 [SuppressUnmanagedCodeSecurity]
 786                 public static byte ReadByte ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs)
 787                 {
 788                         throw new NotImplementedException ();
 789                 }
 790
 791                 public unsafe static short ReadInt16 (IntPtr ptr)
 792                 {
 793                         byte *addr = (byte *) ptr;
 794
 795                         // The mono JIT can't inline this due to the hight number of calls
 796                         // return ReadInt16 (ptr, 0);
 797
 798                         if (((uint)addr & 1) == 0)
 799                                 return *(short*)addr;
 800
 801                         short s;
 802                         String.memcpy ((byte*)&s, (byte*)ptr, 2);
 803                         return s;
 804                 }
 805
 806                 public unsafe static short ReadInt16 (IntPtr ptr, int ofs)
 807                 {
 808                         byte *addr = ((byte *) ptr) + ofs;
 809
 810                         if (((uint) addr & 1) == 0)
 811                                 return *(short*)addr;
 812
 813                         short s;
 814                         String.memcpy ((byte*)&s, addr, 2);
 815                         return s;
 816                 }
 817
 818                 [MonoTODO]
 819                 [SuppressUnmanagedCodeSecurity]
 820                 public static short ReadInt16 ([In, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs)
 821                 {
 822                         throw new NotImplementedException ();
 823                 }
 824
 825                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 826                 public unsafe static int ReadInt32 (IntPtr ptr)
 827                 {
 828                         byte *addr = (byte *) ptr;
 829
 830                         if (((uint)addr & 3) == 0)
 831                                 return *(int*)addr;
 832
 833                         int s;
 834                         String.memcpy ((byte*)&s, addr, 4);
 835                         return s;
 836                 }
 837
 838                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 839                 public unsafe static int ReadInt32 (IntPtr ptr, int ofs)
 840                 {
 841                         byte *addr = ((byte *) ptr) + ofs;
 842
 843                         if ((((int) addr) & 3) == 0)
 844                                 return *(int*)addr;
 845                         else {
 846                                 int s;
 847                                 String.memcpy ((byte*)&s, addr, 4);
 848                                 return s;
 849                         }
 850                 }
 851
 852                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 853                 [MonoTODO]
 854                 [SuppressUnmanagedCodeSecurity]
 855                 public static int ReadInt32 ([In, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs)
 856                 {
 857                         throw new NotImplementedException ();
 858                 }
 859
 860                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 861                 public unsafe static long ReadInt64 (IntPtr ptr)
 862                 {
 863                         byte *addr = (byte *) ptr;
 864
 865                         // The real alignment might be 4 on some platforms, but this is just an optimization,
 866                         // so it doesn't matter.
 867                         if (((uint) addr & 7) == 0)
 868                                 return *(long*)ptr;
 869
 870                         long s;
 871                         String.memcpy ((byte*)&s, addr, 8);
 872                         return s;
 873                 }
 874
 875                 public unsafe static long ReadInt64 (IntPtr ptr, int ofs)
 876                 {
 877                         byte *addr = ((byte *) ptr) + ofs;
 878
 879                         if (((uint) addr & 7) == 0)
 880                                 return *(long*)addr;
 881
 882                         long s;
 883                         String.memcpy ((byte*)&s, addr, 8);
 884                         return s;
 885                 }
 886
 887                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 888                 [MonoTODO]
 889                 [SuppressUnmanagedCodeSecurity]
 890                 public static long ReadInt64 ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs)
 891                 {
 892                         throw new NotImplementedException ();
 893                 }
 894
 895                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 896                 public static IntPtr ReadIntPtr (IntPtr ptr)
 897                 {
 898                         if (IntPtr.Size == 4)
 899                                 return (IntPtr)ReadInt32 (ptr);
 900                         else
 901                                 return (IntPtr)ReadInt64 (ptr);
 902                 }
 903
 904                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 905                 public static IntPtr ReadIntPtr (IntPtr ptr, int ofs)
 906                 {
 907                         if (IntPtr.Size == 4)
 908                                 return (IntPtr)ReadInt32 (ptr, ofs);
 909                         else
 910                                 return (IntPtr)ReadInt64 (ptr, ofs);
 911                 }
 912
 913                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 914                 [MonoTODO]
 915                 public static IntPtr ReadIntPtr ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs)
 916                 {
 917                         throw new NotImplementedException ();
 918                 }
 919
 920                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 921                 public extern static IntPtr ReAllocCoTaskMem (IntPtr pv, int cb);
 922
 923                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 924                 public extern static IntPtr ReAllocHGlobal (IntPtr pv, IntPtr cb);
 925
 926 #if !MOBILE
 927                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
 928                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 929                 private extern static int ReleaseInternal (IntPtr pUnk);
 930 #endif
 931
 932                 [ReliabilityContract (Consistency.WillNotCorruptState, Cer.Success)]
 933                 public static int Release (IntPtr pUnk)
 934                 {
 935 #if !MOBILE
 936                         if (pUnk == IntPtr.Zero)
 937                                 throw new ArgumentException ("Value cannot be null.", "pUnk");
 938
 939                         return ReleaseInternal (pUnk);
 940 #else
 941                         throw new NotImplementedException ();
 942 #endif
 943                 }
 944
 945 #if !FULL_AOT_RUNTIME
 946                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 947                 private extern static int ReleaseComObjectInternal (object co);
 948
 949                 public static int ReleaseComObject (object o)
 950                 {
 951                         if (o == null)
 952                                 throw new ArgumentException ("Value cannot be null.", "o");
 953                         if (!IsComObject (o))
 954                                 throw new ArgumentException ("Value must be a Com object.", "o");
 955                         return ReleaseComObjectInternal (o);
 956                 }
 957
 958                 [Obsolete]
 959                 [MonoTODO]
 960                 public static void ReleaseThreadCache()
 961                 {
 962                         throw new NotImplementedException ();
 963                 }
 964
 965                 [MonoNotSupportedAttribute ("MSDN states user code should never need to call this method.")]
 966                 public static bool SetComObjectData (object obj, object key, object data)
 967                 {
 968                         throw new NotSupportedException ("MSDN states user code should never need to call this method.");
 969                 }
 970 #endif
 971
 972                 [ComVisible (true)]
 973                 public static int SizeOf (object structure)
 974                 {
 975                         return SizeOf (structure.GetType ());
 976                 }
 977
 978                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 979                 public extern static int SizeOf (Type t);
 980
 981 #if NET_4_5
 982                 public static int SizeOf<T> () {
 983                         return SizeOf (typeof (T));
 984                 }
 985
 986                 public static int SizeOf<T> (T structure) {
 987                         return SizeOf (structure.GetType ());
 988                 }
 989 #endif
 990
 991                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 992                 public extern static IntPtr StringToBSTR (string s);
 993
 994                 //
 995                 // I believe this is wrong, because in Mono and in P/Invoke
 996                 // we treat "Ansi" conversions as UTF-8 conversions, while
 997                 // this one does not do this
 998                 //
 999                 public static IntPtr StringToCoTaskMemAnsi (string s)
1000                 {
1001                         int length = s.Length + 1;
1002                         IntPtr ctm = AllocCoTaskMem (length);
1003
1004                         byte[] asBytes = new byte[length];
1005                         for (int i = 0; i < s.Length; i++)
1006                                 asBytes[i] = (byte)s[i];
1007                         asBytes[s.Length] = 0;
1008
1009                         copy_to_unmanaged (asBytes, 0, ctm, length);
1010                         return ctm;
1011                 }
1012
1013                 public static IntPtr StringToCoTaskMemAuto (string s)
1014                 {
1015                         return SystemDefaultCharSize == 2
1016                                 ? StringToCoTaskMemUni (s) : StringToCoTaskMemAnsi (s);
1017                 }
1018
1019                 public static IntPtr StringToCoTaskMemUni (string s)
1020                 {
1021                         int length = s.Length + 1;
1022                         IntPtr ctm = AllocCoTaskMem (length * 2);
1023
1024                         char[] asChars = new char[length];
1025                         s.CopyTo (0, asChars, 0, s.Length);
1026                         asChars[s.Length] = '\0';
1027
1028                         copy_to_unmanaged (asChars, 0, ctm, length);
1029                         return ctm;
1030                 }
1031
1032                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1033                 public extern static IntPtr StringToHGlobalAnsi (string s);
1034
1035                 public static IntPtr StringToHGlobalAuto (string s)
1036                 {
1037                         return SystemDefaultCharSize == 2
1038                                 ? StringToHGlobalUni (s) : StringToHGlobalAnsi (s);
1039                 }
1040
1041                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1042                 public extern static IntPtr StringToHGlobalUni (string s);
1043
1044                 public static IntPtr SecureStringToBSTR (SecureString s)
1045                 {
1046                         if (s == null)
1047                                 throw new ArgumentNullException ("s");
1048                         int len = s.Length;
1049                         IntPtr ctm = AllocCoTaskMem ((len+1) * 2 + 4);
1050                         byte [] buffer = null;
1051                         WriteInt32 (ctm, 0, len*2);
1052                         try {
1053                                 buffer = s.GetBuffer ();
1054
1055                                 for (int i = 0; i < len; i++)
1056                                         WriteInt16 (ctm, 4 + (i * 2), (short) ((buffer [(i*2)] << 8) | (buffer [i*2+1])));
1057                                 WriteInt16 (ctm, 4 + buffer.Length, 0);
1058                         } finally {
1059                                 if (buffer != null)
1060                                         for (int i = buffer.Length; i > 0; ){
1061                                                 i--;
1062                                                 buffer [i] = 0;
1063                                         }
1064                         }
1065                         return (IntPtr) ((long)ctm + 4);
1066                 }
1067
1068                 public static IntPtr SecureStringToCoTaskMemAnsi (SecureString s)
1069                 {
1070                         if (s == null)
1071                                 throw new ArgumentNullException ("s");
1072                         int len = s.Length;
1073                         IntPtr ctm = AllocCoTaskMem (len + 1);
1074                         byte [] copy = new byte [len+1];
1075
1076                         try {
1077                                 byte [] buffer = s.GetBuffer ();
1078                                 int i = 0, j = 0;
1079                                 for (; i < len; i++, j += 2){
1080                                         copy [i] = buffer [j+1];
1081                                         buffer [j] = 0;
1082                                         buffer [j+1] = 0;
1083                                 }
1084                                 copy [i] = 0;
1085                                 copy_to_unmanaged (copy, 0, ctm, len+1);
1086                         } finally {
1087                                 // Ensure that we clear the buffer.
1088                                 for (int i = len; i > 0; ){
1089                                         i--;
1090                                         copy [i] = 0;
1091                                 }
1092                         }
1093                         return ctm;
1094                 }
1095
1096                 public static IntPtr SecureStringToCoTaskMemUnicode (SecureString s)
1097                 {
1098                         if (s == null)
1099                                 throw new ArgumentNullException ("s");
1100                         int len = s.Length;
1101                         IntPtr ctm = AllocCoTaskMem (len * 2 + 2);
1102                         byte [] buffer = null;
1103                         try {
1104                                 buffer = s.GetBuffer ();
1105                                 for (int i = 0; i < len; i++)
1106                                         WriteInt16 (ctm, i * 2, (short) ((buffer [(i*2)] << 8) | (buffer [i*2+1])));
1107                                 WriteInt16 (ctm, buffer.Length, 0);
1108                         } finally {
1109                                 if (buffer != null)
1110                                         for (int i = buffer.Length; i > 0; ){
1111                                                 i--;
1112                                                 buffer [i] = 0;
1113                                         }
1114                         }
1115                         return ctm;
1116                 }
1117
1118                 public static IntPtr SecureStringToGlobalAllocAnsi (SecureString s)
1119                 {
1120                         if (s == null)
1121                                 throw new ArgumentNullException ("s");
1122                         return SecureStringToCoTaskMemAnsi (s);
1123                 }
1124
1125                 public static IntPtr SecureStringToGlobalAllocUnicode (SecureString s)
1126                 {
1127                         if (s == null)
1128                                 throw new ArgumentNullException ("s");
1129                         return SecureStringToCoTaskMemUnicode (s);
1130                 }
1131
1132                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
1133                 [ComVisible (true)]
1134                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1135                 public extern static void StructureToPtr (object structure, IntPtr ptr, bool fDeleteOld);
1136
1137 #if NET_4_5
1138                 public static void StructureToPtr<T> (T structure, IntPtr ptr, bool fDeleteOld) {
1139                         StructureToPtr ((object)structure, ptr, fDeleteOld);
1140                 }
1141 #endif
1142
1143                 public static void ThrowExceptionForHR (int errorCode) {
1144                         Exception ex = GetExceptionForHR (errorCode);
1145                         if (ex != null)
1146                                 throw ex;
1147                 }
1148
1149                 public static void ThrowExceptionForHR (int errorCode, IntPtr errorInfo) {
1150                         Exception ex = GetExceptionForHR (errorCode, errorInfo);
1151                         if (ex != null)
1152                                 throw ex;
1153                 }
1154
1155                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1156                 public extern static IntPtr UnsafeAddrOfPinnedArrayElement (Array arr, int index);
1157
1158 #if NET_4_5
1159                 public static IntPtr UnsafeAddrOfPinnedArrayElement<T> (T[] arr, int index) {
1160                         return UnsafeAddrOfPinnedArrayElement ((Array)arr, index);
1161                 }
1162 #endif
1163
1164                 public static void WriteByte (IntPtr ptr, byte val)
1165                 {
1166                         unsafe {
1167                                 *(byte*)ptr = val;
1168                         }
1169                 }
1170
1171                 public static void WriteByte (IntPtr ptr, int ofs, byte val) {
1172                         unsafe {
1173                                 *(byte*)(IntPtr.Add (ptr, ofs)) = val;
1174                         }
1175                 }
1176
1177                 [MonoTODO]
1178                 [SuppressUnmanagedCodeSecurity]
1179                 public static void WriteByte ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, byte val)
1180                 {
1181                         throw new NotImplementedException ();
1182                 }
1183
1184                 public static unsafe void WriteInt16 (IntPtr ptr, short val)
1185                 {
1186                         byte *addr = (byte *) ptr;
1187
1188                         if (((uint)addr & 1) == 0)
1189                                 *(short*)addr = val;
1190                         else
1191                                 String.memcpy (addr, (byte*)&val, 2);
1192                 }
1193
1194                 public static unsafe void WriteInt16 (IntPtr ptr, int ofs, short val)
1195                 {
1196                         byte *addr = ((byte *) ptr) + ofs;
1197
1198                         if (((uint)addr & 1) == 0)
1199                                 *(short*)addr = val;
1200                         else {
1201                                 String.memcpy (addr, (byte*)&val, 2);
1202                         }
1203                 }
1204
1205                 [MonoTODO]
1206                 [SuppressUnmanagedCodeSecurity]
1207                 public static void WriteInt16 ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, short val)
1208                 {
1209                         throw new NotImplementedException ();
1210                 }
1211
1212                 public static void WriteInt16 (IntPtr ptr, char val)
1213                 {
1214                         WriteInt16 (ptr, 0, (short)val);
1215                 }
1216
1217                 public static void WriteInt16 (IntPtr ptr, int ofs, char val)
1218                 {
1219                         WriteInt16 (ptr, ofs, (short)val);
1220                 }
1221
1222                 [MonoTODO]
1223                 public static void WriteInt16([In, Out] object ptr, int ofs, char val)
1224                 {
1225                         throw new NotImplementedException ();
1226                 }
1227
1228                 public static unsafe void WriteInt32 (IntPtr ptr, int val)
1229                 {
1230                         byte *addr = (byte *) ptr;
1231
1232                         if (((uint)addr & 3) == 0)
1233                                 *(int*)addr = val;
1234                         else {
1235                                 String.memcpy (addr, (byte*)&val, 4);
1236                         }
1237                 }
1238
1239                 public unsafe static void WriteInt32 (IntPtr ptr, int ofs, int val)
1240                 {
1241                         byte *addr = ((byte *) ptr) + ofs;
1242
1243                         if (((uint)addr & 3) == 0)
1244                                 *(int*)addr = val;
1245                         else {
1246                                 String.memcpy (addr, (byte*)&val, 4);
1247                         }
1248                 }
1249
1250                 [MonoTODO]
1251                 [SuppressUnmanagedCodeSecurity]
1252                 public static void WriteInt32([In, Out, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs, int val)
1253                 {
1254                         throw new NotImplementedException ();
1255                 }
1256
1257                 public static unsafe void WriteInt64 (IntPtr ptr, long val)
1258                 {
1259                         byte *addr = (byte *) ptr;
1260
1261                         // The real alignment might be 4 on some platforms, but this is just an optimization,
1262                         // so it doesn't matter.
1263                         if (((uint)addr & 7) == 0)
1264                                 *(long*)addr = val;
1265                         else
1266                                 String.memcpy (addr, (byte*)&val, 8);
1267                 }
1268
1269                 public static unsafe void WriteInt64 (IntPtr ptr, int ofs, long val)
1270                 {
1271                         byte *addr = ((byte *) ptr) + ofs;
1272
1273                         // The real alignment might be 4 on some platforms, but this is just an optimization,
1274                         // so it doesn't matter.
1275                         if (((uint)addr & 7) == 0)
1276                                 *(long*)addr = val;
1277                         else
1278                                 String.memcpy (addr, (byte*)&val, 8);
1279                 }
1280
1281                 [MonoTODO]
1282                 [SuppressUnmanagedCodeSecurity]
1283                 public static void WriteInt64 ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, long val)
1284                 {
1285                         throw new NotImplementedException ();
1286                 }
1287
1288                 public static void WriteIntPtr (IntPtr ptr, IntPtr val)
1289                 {
1290                         if (IntPtr.Size == 4)
1291                                 WriteInt32 (ptr, (int)val);
1292                         else
1293                                 WriteInt64 (ptr, (long)val);
1294                 }
1295
1296                 public static void WriteIntPtr (IntPtr ptr, int ofs, IntPtr val)
1297                 {
1298                         if (IntPtr.Size == 4)
1299                                 WriteInt32 (ptr, ofs, (int)val);
1300                         else
1301                                 WriteInt64 (ptr, ofs, (long)val);
1302                 }
1303
1304                 [MonoTODO]
1305                 public static void WriteIntPtr([In, Out, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs, IntPtr val)
1306                 {
1307                         throw new NotImplementedException ();
1308                 }
1309
1310                 public static Exception GetExceptionForHR (int errorCode) {
1311                         return GetExceptionForHR (errorCode, IntPtr.Zero);
1312                 }
1313
1314                 public static Exception GetExceptionForHR (int errorCode, IntPtr errorInfo) {
1315
1316                         const int E_OUTOFMEMORY = unchecked ((int)0x8007000EL);
1317                         const int E_INVALIDARG = unchecked ((int)0X80070057);
1318
1319                         switch (errorCode)
1320                         {
1321                         case E_OUTOFMEMORY:
1322                                 return new OutOfMemoryException ();
1323                         case E_INVALIDARG:
1324                                 return new ArgumentException ();
1325                         }
1326                         if (errorCode < 0)
1327                                 return new COMException ("", errorCode);
1328                         return null;
1329                 }
1330
1331 #if !FULL_AOT_RUNTIME
1332                 public static int FinalReleaseComObject (object o)
1333                 {
1334                         while (ReleaseComObject (o) != 0);
1335                         return 0;
1336                 }
1337 #endif
1338
1339                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1340                 private static extern Delegate GetDelegateForFunctionPointerInternal (IntPtr ptr, Type t);
1341
1342                 public static Delegate GetDelegateForFunctionPointer (IntPtr ptr, Type t)
1343                 {
1344                         if (t == null)
1345                                 throw new ArgumentNullException ("t");
1346                         if (!t.IsSubclassOf (typeof (MulticastDelegate)) || (t == typeof (MulticastDelegate)))
1347                                 throw new ArgumentException ("Type is not a delegate", "t");
1348                         if (t.IsGenericType)
1349                                 throw new ArgumentException ("The specified Type must not be a generic type definition.");
1350                         if (ptr == IntPtr.Zero)
1351                                 throw new ArgumentNullException ("ptr");
1352
1353                         return GetDelegateForFunctionPointerInternal (ptr, t);
1354                 }
1355
1356 #if NET_4_5
1357                 public static Delegate GetDelegateForFunctionPointer<T> (IntPtr ptr) {
1358                         return GetDelegateForFunctionPointer (ptr, typeof (T));
1359                 }
1360 #endif
1361
1362                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1363                 private static extern IntPtr GetFunctionPointerForDelegateInternal (Delegate d);
1364
1365                 public static IntPtr GetFunctionPointerForDelegate (Delegate d)
1366                 {
1367                         if (d == null)
1368                                 throw new ArgumentNullException ("d");
1369
1370                         return GetFunctionPointerForDelegateInternal (d);
1371                 }
1372
1373 #if NET_4_5
1374                 public static IntPtr GetFunctionPointerForDelegate<TDelegate> (TDelegate d) {
1375                         if (d == null)
1376                                 throw new ArgumentNullException ("d");
1377
1378                         return GetFunctionPointerForDelegateInternal ((Delegate)(object)d);
1379                 }
1380 #endif
1381         }
1382 }