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
  39 namespace System.Runtime.Remoting.Messaging {
  40
  41         [Serializable]
  42         internal class MonoMethodMessage : IMethodCallMessage, IMethodReturnMessage, IInternalMessage {
  43
  44                 #region keep in sync with MonoMessage in object-internals.h
  45                 MonoMethod method;
  46                 object []  args;
  47                 string []  names;
  48                 byte [] arg_types; /* 1 == IN; 2 == OUT; 3 == INOUT; 4 == COPY OUT */
  49                 public LogicalCallContext ctx;
  50                 public object rval;
  51                 public Exception exc;
  52                 AsyncResult asyncResult;
  53                 CallType call_type;
  54                 #endregion
  55
  56                 string uri;
  57
  58                 MethodCallDictionary properties;
  59
  60                 Type[] methodSignature;
  61
  62                 Identity identity;
  63
  64
  65                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  66                 internal extern void InitMessage (MonoMethod method, object [] out_args);
  67
  68                 public MonoMethodMessage (MethodBase method, object [] out_args)
  69                 {
  70                         if (method != null)
  71                                 InitMessage ((MonoMethod)method, out_args);
  72                         else
  73                                 args = null;
  74                 }
  75
  76                 public MonoMethodMessage (Type type, string method_name, object [] in_args)
  77                 {
  78                         // fixme: consider arg types
  79                         MethodInfo minfo = type.GetMethod (method_name);
  80
  81                         InitMessage ((MonoMethod)minfo, null);
  82
  83                         int len = in_args.Length;
  84                         for (int i = 0; i < len; i++) {
  85                                 args [i] = in_args [i];
  86                         }
  87                 }
  88
  89                 public IDictionary Properties {
  90                         get {
  91                                 if (properties == null) properties = new MethodCallDictionary (this);
  92                                 return properties;
  93                         }
  94                 }
  95
  96                 public int ArgCount {
  97                         get {
  98                                 if (CallType == CallType.EndInvoke)
  99                                         return -1;
 100
 101                                 if (null == args)
 102                                         return 0;
 103
 104                                 return args.Length;
 105                         }
 106                 }
 107
 108                 public object [] Args {
 109                         get {
 110                                 return args;
 111                         }
 112                 }
 113
 114                 public bool HasVarArgs {
 115                         get {
 116                                 return false;
 117                         }
 118                 }
 119
 120                 public LogicalCallContext LogicalCallContext {
 121                         get {
 122                                 return ctx;
 123                         }
 124
 125                         set {
 126                                 ctx = value;
 127                         }
 128                 }
 129
 130                 public MethodBase MethodBase {
 131                         get {
 132                                 return method;
 133                         }
 134                 }
 135
 136                 public string MethodName {
 137                         get {
 138                                 if (null == method)
 139                                         return String.Empty;
 140
 141                                 return method.Name;
 142                         }
 143                 }
 144
 145                 public object MethodSignature {
 146                         get {
 147                                 if (methodSignature == null) {
 148                                         ParameterInfo[] parameters = method.GetParameters();
 149                                         methodSignature = new Type[parameters.Length];
 150                                         for (int n=0; n<parameters.Length; n++)
 151                                                 methodSignature[n] = parameters[n].ParameterType;
 152                                 }
 153                                 return methodSignature;
 154                         }
 155                 }
 156
 157                 public string TypeName {
 158                         get {
 159                                 if (null == method)
 160                                         return String.Empty;
 161
 162                                 return method.DeclaringType.AssemblyQualifiedName;
 163                         }
 164                 }
 165
 166                 public string Uri {
 167                         get {
 168                                 return uri;
 169                         }
 170
 171                         set {
 172                                 uri = value;
 173                         }
 174                 }
 175
 176                 public object GetArg (int arg_num)
 177                 {
 178                         if (null == args)
 179                                 return null;
 180
 181                         return args [arg_num];
 182                 }
 183
 184                 public string GetArgName (int arg_num)
 185                 {
 186                         if (null == args)
 187                                 return String.Empty;
 188
 189                         return names [arg_num];
 190                 }
 191
 192                 public int InArgCount {
 193                         get {
 194                                 if (CallType == CallType.EndInvoke)
 195                                         return -1;
 196
 197                                 if (null == args)
 198                                         return 0;
 199
 200                                 int count = 0;
 201
 202                                 foreach (byte t in arg_types) {
 203                                         if ((t & 1) != 0) count++;
 204
 205                                 }
 206                                 return count;
 207                         }
 208                 }
 209
 210                 public object [] InArgs {
 211                         get {
 212                                 int i, j, count = InArgCount;
 213                                 object [] inargs = new object [count];
 214
 215                                 i = j = 0;
 216                                 foreach (byte t in arg_types) {
 217                                         if ((t & 1) != 0)
 218                                                 inargs [j++] = args [i];
 219                                         i++;
 220                                 }
 221
 222                                 return inargs;
 223                         }
 224                 }
 225
 226                 public object GetInArg (int arg_num)
 227                 {
 228                         int i = 0, j = 0;
 229                         foreach (byte t in arg_types) {
 230                                 if ((t & 1) != 0) {
 231                                         if (j++ == arg_num)
 232                                                 return args [i];
 233                                 }
 234                                 i++;
 235                         }
 236                         return null;
 237                 }
 238
 239                 public string GetInArgName (int arg_num)
 240                 {
 241                         int i = 0, j = 0;
 242                         foreach (byte t in arg_types) {
 243                                 if ((t & 1) != 0) {
 244                                         if (j++ == arg_num)
 245                                                 return names [i];
 246                                 }
 247                                 i++;
 248                         }
 249                         return null;
 250                 }
 251
 252                 public Exception Exception {
 253                         get {
 254                                 return exc;
 255                         }
 256                 }
 257
 258                 public int OutArgCount {
 259                         get {
 260                                 if (null == args)
 261                                         return 0;
 262
 263                                 int count = 0;
 264
 265                                 foreach (byte t in arg_types) {
 266                                         if ((t & 2) != 0) count++;
 267
 268                                 }
 269                                 return count;
 270                         }
 271                 }
 272
 273                 public object [] OutArgs {
 274                         get {
 275                                 if (null == args)
 276                                         return null;
 277
 278                                 int i, j, count = OutArgCount;
 279                                 object [] outargs = new object [count];
 280
 281                                 i = j = 0;
 282                                 foreach (byte t in arg_types) {
 283                                         if ((t & 2) != 0)
 284                                                 outargs [j++] = args [i];
 285                                         i++;
 286                                 }
 287
 288                                 return outargs;
 289                         }
 290                 }
 291
 292                 public object ReturnValue {
 293                         get {
 294                                 return rval;
 295                         }
 296                 }
 297
 298                 public object GetOutArg (int arg_num)
 299                 {
 300                         int i = 0, j = 0;
 301                         foreach (byte t in arg_types) {
 302                                 if ((t & 2) != 0) {
 303                                         if (j++ == arg_num)
 304                                                 return args [i];
 305                                 }
 306                                 i++;
 307                         }
 308                         return null;
 309                 }
 310
 311                 public string GetOutArgName (int arg_num)
 312                 {
 313                         int i = 0, j = 0;
 314                         foreach (byte t in arg_types) {
 315                                 if ((t & 2) != 0) {
 316                                         if (j++ == arg_num)
 317                                                 return names [i];
 318                                 }
 319                                 i++;
 320                         }
 321                         return null;
 322                 }
 323
 324                 Identity IInternalMessage.TargetIdentity
 325                 {
 326                         get { return identity; }
 327                         set { identity = value; }
 328                 }
 329
 330                 public bool IsAsync
 331                 {
 332                         get { return asyncResult != null; }
 333                 }
 334
 335                 public AsyncResult AsyncResult
 336                 {
 337                         get { return asyncResult; }
 338                 }
 339
 340                 internal CallType CallType
 341                 {
 342                         get
 343                         {
 344                                 // FIXME: ideally, the OneWay type would be set by the runtime
 345
 346                                 if (call_type == CallType.Sync && RemotingServices.IsOneWay (method))
 347                                         call_type = CallType.OneWay;
 348                                 return call_type;
 349                         }
 350                 }
 351
 352                 public bool NeedsOutProcessing (out int outCount) {
 353                         bool res = false;
 354                         outCount = 0;
 355                         foreach (byte t in arg_types) {
 356                                 if ((t & 2) != 0)
 357                                         outCount++;
 358                                 else if ((t & 4) != 0)
 359                                         res = true;
 360                         }
 361                         return outCount > 0 || res;
 362                 }
 363
 364         }
 365
 366         internal enum CallType: int
 367         {
 368                 Sync = 0,
 369                 BeginInvoke = 1,
 370                 EndInvoke = 2,
 371                 OneWay = 3
 372         }
 373 }
 374