mcs/class/corlib/System.Runtime.Remoting.Messaging/MonoMethodMessage.cs

   1 //
   2 // System.Runtime.Remoting.Messaging.MonoMethodMessage.cs
   3 //
   4 // Author:
   5 //   Dietmar Maurer (dietmar@ximian.com)
   6 //   Patrik Torstensson
   7 //
   8 // (C) Ximian, Inc.  http://www.ximian.com
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System;
  35 using System.Collections;
  36 using System.Reflection;
  37 using System.Runtime.CompilerServices;
  38 using System.Runtime.InteropServices;
  39
  40 namespace System.Runtime.Remoting.Messaging {
  41
  42         [Serializable]
  43         [StructLayout (LayoutKind.Sequential)]
  44         internal class MonoMethodMessage : IMethodCallMessage, IMethodReturnMessage, IInternalMessage {
  45
  46 #pragma warning disable 649
  47                 #region keep in sync with MonoMessage in object-internals.h
  48                 MonoMethod method;
  49                 object []  args;
  50                 string []  names;
  51                 byte [] arg_types; /* 1 == IN; 2 == OUT; 3 == INOUT; 4 == COPY OUT */
  52                 public LogicalCallContext ctx;
  53                 public object rval;
  54                 public Exception exc;
  55                 AsyncResult asyncResult;
  56                 CallType call_type;
  57                 #endregion
  58 #pragma warning restore 649
  59
  60                 string uri;
  61
  62                 MethodCallDictionary properties;
  63
  64                 Type[] methodSignature;
  65
  66                 Identity identity;
  67
  68
  69                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  70                 internal extern void InitMessage (MonoMethod method, object [] out_args);
  71
  72                 public MonoMethodMessage (MethodBase method, object [] out_args)
  73                 {
  74                         if (method != null)
  75                                 InitMessage ((MonoMethod)method, out_args);
  76                         else
  77                                 args = null;
  78                 }
  79
  80                 public MonoMethodMessage (Type type, string method_name, object [] in_args)
  81                 {
  82                         // fixme: consider arg types
  83                         MethodInfo minfo = type.GetMethod (method_name);
  84
  85                         InitMessage ((MonoMethod)minfo, null);
  86
  87                         int len = in_args.Length;
  88                         for (int i = 0; i < len; i++) {
  89                                 args [i] = in_args [i];
  90                         }
  91                 }
  92
  93                 public IDictionary Properties {
  94                         get {
  95                                 if (properties == null) properties = new MethodCallDictionary (this);
  96                                 return properties;
  97                         }
  98                 }
  99
 100                 public int ArgCount {
 101                         get {
 102                                 if (CallType == CallType.EndInvoke)
 103                                         return -1;
 104
 105                                 if (null == args)
 106                                         return 0;
 107
 108                                 return args.Length;
 109                         }
 110                 }
 111
 112                 public object [] Args {
 113                         get {
 114                                 return args;
 115                         }
 116                 }
 117
 118                 public bool HasVarArgs {
 119                         get {
 120                                 return false;
 121                         }
 122                 }
 123
 124                 public LogicalCallContext LogicalCallContext {
 125                         get {
 126                                 return ctx;
 127                         }
 128
 129                         set {
 130                                 ctx = value;
 131                         }
 132                 }
 133
 134                 public MethodBase MethodBase {
 135                         get {
 136                                 return method;
 137                         }
 138                 }
 139
 140                 public string MethodName {
 141                         get {
 142                                 if (null == method)
 143                                         return String.Empty;
 144
 145                                 return method.Name;
 146                         }
 147                 }
 148
 149                 public object MethodSignature {
 150                         get {
 151                                 if (methodSignature == null) {
 152                                         ParameterInfo[] parameters = method.GetParameters();
 153                                         methodSignature = new Type[parameters.Length];
 154                                         for (int n=0; n<parameters.Length; n++)
 155                                                 methodSignature[n] = parameters[n].ParameterType;
 156                                 }
 157                                 return methodSignature;
 158                         }
 159                 }
 160
 161                 public string TypeName {
 162                         get {
 163                                 if (null == method)
 164                                         return String.Empty;
 165
 166                                 return method.DeclaringType.AssemblyQualifiedName;
 167                         }
 168                 }
 169
 170                 public string Uri {
 171                         get {
 172                                 return uri;
 173                         }
 174
 175                         set {
 176                                 uri = value;
 177                         }
 178                 }
 179
 180                 public object GetArg (int arg_num)
 181                 {
 182                         if (null == args)
 183                                 return null;
 184
 185                         return args [arg_num];
 186                 }
 187
 188                 public string GetArgName (int arg_num)
 189                 {
 190                         if (null == args)
 191                                 return String.Empty;
 192
 193                         return names [arg_num];
 194                 }
 195
 196                 public int InArgCount {
 197                         get {
 198                                 if (CallType == CallType.EndInvoke)
 199                                         return -1;
 200
 201                                 if (null == args)
 202                                         return 0;
 203
 204                                 int count = 0;
 205
 206                                 foreach (byte t in arg_types) {
 207                                         if ((t & 1) != 0) count++;
 208
 209                                 }
 210                                 return count;
 211                         }
 212                 }
 213
 214                 public object [] InArgs {
 215                         get {
 216                                 int i, j, count = InArgCount;
 217                                 object [] inargs = new object [count];
 218
 219                                 i = j = 0;
 220                                 foreach (byte t in arg_types) {
 221                                         if ((t & 1) != 0)
 222                                                 inargs [j++] = args [i];
 223                                         i++;
 224                                 }
 225
 226                                 return inargs;
 227                         }
 228                 }
 229
 230                 public object GetInArg (int arg_num)
 231                 {
 232                         int i = 0, j = 0;
 233                         foreach (byte t in arg_types) {
 234                                 if ((t & 1) != 0) {
 235                                         if (j++ == arg_num)
 236                                                 return args [i];
 237                                 }
 238                                 i++;
 239                         }
 240                         return null;
 241                 }
 242
 243                 public string GetInArgName (int arg_num)
 244                 {
 245                         int i = 0, j = 0;
 246                         foreach (byte t in arg_types) {
 247                                 if ((t & 1) != 0) {
 248                                         if (j++ == arg_num)
 249                                                 return names [i];
 250                                 }
 251                                 i++;
 252                         }
 253                         return null;
 254                 }
 255
 256                 public Exception Exception {
 257                         get {
 258                                 return exc;
 259                         }
 260                 }
 261
 262                 public int OutArgCount {
 263                         get {
 264                                 if (null == args)
 265                                         return 0;
 266
 267                                 int count = 0;
 268
 269                                 foreach (byte t in arg_types) {
 270                                         if ((t & 2) != 0) count++;
 271
 272                                 }
 273                                 return count;
 274                         }
 275                 }
 276
 277                 public object [] OutArgs {
 278                         get {
 279                                 if (null == args)
 280                                         return null;
 281
 282                                 int i, j, count = OutArgCount;
 283                                 object [] outargs = new object [count];
 284
 285                                 i = j = 0;
 286                                 foreach (byte t in arg_types) {
 287                                         if ((t & 2) != 0)
 288                                                 outargs [j++] = args [i];
 289                                         i++;
 290                                 }
 291
 292                                 return outargs;
 293                         }
 294                 }
 295
 296                 public object ReturnValue {
 297                         get {
 298                                 return rval;
 299                         }
 300                 }
 301
 302                 public object GetOutArg (int arg_num)
 303                 {
 304                         int i = 0, j = 0;
 305                         foreach (byte t in arg_types) {
 306                                 if ((t & 2) != 0) {
 307                                         if (j++ == arg_num)
 308                                                 return args [i];
 309                                 }
 310                                 i++;
 311                         }
 312                         return null;
 313                 }
 314
 315                 public string GetOutArgName (int arg_num)
 316                 {
 317                         int i = 0, j = 0;
 318                         foreach (byte t in arg_types) {
 319                                 if ((t & 2) != 0) {
 320                                         if (j++ == arg_num)
 321                                                 return names [i];
 322                                 }
 323                                 i++;
 324                         }
 325                         return null;
 326                 }
 327
 328                 Identity IInternalMessage.TargetIdentity
 329                 {
 330                         get { return identity; }
 331                         set { identity = value; }
 332                 }
 333
 334                 public bool IsAsync
 335                 {
 336                         get { return asyncResult != null; }
 337                 }
 338
 339                 public AsyncResult AsyncResult
 340                 {
 341                         get { return asyncResult; }
 342                 }
 343
 344                 internal CallType CallType
 345                 {
 346                         get
 347                         {
 348                                 // FIXME: ideally, the OneWay type would be set by the runtime
 349
 350                                 if (call_type == CallType.Sync && RemotingServices.IsOneWay (method))
 351                                         call_type = CallType.OneWay;
 352                                 return call_type;
 353                         }
 354                 }
 355
 356                 public bool NeedsOutProcessing (out int outCount) {
 357                         bool res = false;
 358                         outCount = 0;
 359                         foreach (byte t in arg_types) {
 360                                 if ((t & 2) != 0)
 361                                         outCount++;
 362                                 else if ((t & 4) != 0)
 363                                         res = true;
 364                         }
 365                         return outCount > 0 || res;
 366                 }
 367
 368         }
 369
 370         internal enum CallType: int
 371         {
 372                 Sync = 0,
 373                 BeginInvoke = 1,
 374                 EndInvoke = 2,
 375                 OneWay = 3
 376         }
 377 }
 378