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 #pragma warning disable 649
  45                 #region keep in sync with MonoMessage in object-internals.h
  46                 MonoMethod method;
  47                 object []  args;
  48                 string []  names;
  49                 byte [] arg_types; /* 1 == IN; 2 == OUT; 3 == INOUT; 4 == COPY OUT */
  50                 public LogicalCallContext ctx;
  51                 public object rval;
  52                 public Exception exc;
  53                 AsyncResult asyncResult;
  54                 CallType call_type;
  55                 #endregion
  56 #pragma warning restore 649
  57
  58                 string uri;
  59
  60                 MethodCallDictionary properties;
  61
  62                 Type[] methodSignature;
  63
  64                 Identity identity;
  65
  66
  67                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  68                 internal extern void InitMessage (MonoMethod method, object [] out_args);
  69
  70                 public MonoMethodMessage (MethodBase method, object [] out_args)
  71                 {
  72                         if (method != null)
  73                                 InitMessage ((MonoMethod)method, out_args);
  74                         else
  75                                 args = null;
  76                 }
  77
  78                 public MonoMethodMessage (Type type, string method_name, object [] in_args)
  79                 {
  80                         // fixme: consider arg types
  81                         MethodInfo minfo = type.GetMethod (method_name);
  82
  83                         InitMessage ((MonoMethod)minfo, null);
  84
  85                         int len = in_args.Length;
  86                         for (int i = 0; i < len; i++) {
  87                                 args [i] = in_args [i];
  88                         }
  89                 }
  90
  91                 public IDictionary Properties {
  92                         get {
  93                                 if (properties == null) properties = new MethodCallDictionary (this);
  94                                 return properties;
  95                         }
  96                 }
  97
  98                 public int ArgCount {
  99                         get {
 100                                 if (CallType == CallType.EndInvoke)
 101                                         return -1;
 102
 103                                 if (null == args)
 104                                         return 0;
 105
 106                                 return args.Length;
 107                         }
 108                 }
 109
 110                 public object [] Args {
 111                         get {
 112                                 return args;
 113                         }
 114                 }
 115
 116                 public bool HasVarArgs {
 117                         get {
 118                                 return false;
 119                         }
 120                 }
 121
 122                 public LogicalCallContext LogicalCallContext {
 123                         get {
 124                                 return ctx;
 125                         }
 126
 127                         set {
 128                                 ctx = value;
 129                         }
 130                 }
 131
 132                 public MethodBase MethodBase {
 133                         get {
 134                                 return method;
 135                         }
 136                 }
 137
 138                 public string MethodName {
 139                         get {
 140                                 if (null == method)
 141                                         return String.Empty;
 142
 143                                 return method.Name;
 144                         }
 145                 }
 146
 147                 public object MethodSignature {
 148                         get {
 149                                 if (methodSignature == null) {
 150                                         ParameterInfo[] parameters = method.GetParameters();
 151                                         methodSignature = new Type[parameters.Length];
 152                                         for (int n=0; n<parameters.Length; n++)
 153                                                 methodSignature[n] = parameters[n].ParameterType;
 154                                 }
 155                                 return methodSignature;
 156                         }
 157                 }
 158
 159                 public string TypeName {
 160                         get {
 161                                 if (null == method)
 162                                         return String.Empty;
 163
 164                                 return method.DeclaringType.AssemblyQualifiedName;
 165                         }
 166                 }
 167
 168                 public string Uri {
 169                         get {
 170                                 return uri;
 171                         }
 172
 173                         set {
 174                                 uri = value;
 175                         }
 176                 }
 177
 178                 public object GetArg (int arg_num)
 179                 {
 180                         if (null == args)
 181                                 return null;
 182
 183                         return args [arg_num];
 184                 }
 185
 186                 public string GetArgName (int arg_num)
 187                 {
 188                         if (null == args)
 189                                 return String.Empty;
 190
 191                         return names [arg_num];
 192                 }
 193
 194                 public int InArgCount {
 195                         get {
 196                                 if (CallType == CallType.EndInvoke)
 197                                         return -1;
 198
 199                                 if (null == args)
 200                                         return 0;
 201
 202                                 int count = 0;
 203
 204                                 foreach (byte t in arg_types) {
 205                                         if ((t & 1) != 0) count++;
 206
 207                                 }
 208                                 return count;
 209                         }
 210                 }
 211
 212                 public object [] InArgs {
 213                         get {
 214                                 int i, j, count = InArgCount;
 215                                 object [] inargs = new object [count];
 216
 217                                 i = j = 0;
 218                                 foreach (byte t in arg_types) {
 219                                         if ((t & 1) != 0)
 220                                                 inargs [j++] = args [i];
 221                                         i++;
 222                                 }
 223
 224                                 return inargs;
 225                         }
 226                 }
 227
 228                 public object GetInArg (int arg_num)
 229                 {
 230                         int i = 0, j = 0;
 231                         foreach (byte t in arg_types) {
 232                                 if ((t & 1) != 0) {
 233                                         if (j++ == arg_num)
 234                                                 return args [i];
 235                                 }
 236                                 i++;
 237                         }
 238                         return null;
 239                 }
 240
 241                 public string GetInArgName (int arg_num)
 242                 {
 243                         int i = 0, j = 0;
 244                         foreach (byte t in arg_types) {
 245                                 if ((t & 1) != 0) {
 246                                         if (j++ == arg_num)
 247                                                 return names [i];
 248                                 }
 249                                 i++;
 250                         }
 251                         return null;
 252                 }
 253
 254                 public Exception Exception {
 255                         get {
 256                                 return exc;
 257                         }
 258                 }
 259
 260                 public int OutArgCount {
 261                         get {
 262                                 if (null == args)
 263                                         return 0;
 264
 265                                 int count = 0;
 266
 267                                 foreach (byte t in arg_types) {
 268                                         if ((t & 2) != 0) count++;
 269
 270                                 }
 271                                 return count;
 272                         }
 273                 }
 274
 275                 public object [] OutArgs {
 276                         get {
 277                                 if (null == args)
 278                                         return null;
 279
 280                                 int i, j, count = OutArgCount;
 281                                 object [] outargs = new object [count];
 282
 283                                 i = j = 0;
 284                                 foreach (byte t in arg_types) {
 285                                         if ((t & 2) != 0)
 286                                                 outargs [j++] = args [i];
 287                                         i++;
 288                                 }
 289
 290                                 return outargs;
 291                         }
 292                 }
 293
 294                 public object ReturnValue {
 295                         get {
 296                                 return rval;
 297                         }
 298                 }
 299
 300                 public object GetOutArg (int arg_num)
 301                 {
 302                         int i = 0, j = 0;
 303                         foreach (byte t in arg_types) {
 304                                 if ((t & 2) != 0) {
 305                                         if (j++ == arg_num)
 306                                                 return args [i];
 307                                 }
 308                                 i++;
 309                         }
 310                         return null;
 311                 }
 312
 313                 public string GetOutArgName (int arg_num)
 314                 {
 315                         int i = 0, j = 0;
 316                         foreach (byte t in arg_types) {
 317                                 if ((t & 2) != 0) {
 318                                         if (j++ == arg_num)
 319                                                 return names [i];
 320                                 }
 321                                 i++;
 322                         }
 323                         return null;
 324                 }
 325
 326                 Identity IInternalMessage.TargetIdentity
 327                 {
 328                         get { return identity; }
 329                         set { identity = value; }
 330                 }
 331
 332                 public bool IsAsync
 333                 {
 334                         get { return asyncResult != null; }
 335                 }
 336
 337                 public AsyncResult AsyncResult
 338                 {
 339                         get { return asyncResult; }
 340                 }
 341
 342                 internal CallType CallType
 343                 {
 344                         get
 345                         {
 346                                 // FIXME: ideally, the OneWay type would be set by the runtime
 347
 348                                 if (call_type == CallType.Sync && RemotingServices.IsOneWay (method))
 349                                         call_type = CallType.OneWay;
 350                                 return call_type;
 351                         }
 352                 }
 353
 354                 public bool NeedsOutProcessing (out int outCount) {
 355                         bool res = false;
 356                         outCount = 0;
 357                         foreach (byte t in arg_types) {
 358                                 if ((t & 2) != 0)
 359                                         outCount++;
 360                                 else if ((t & 4) != 0)
 361                                         res = true;
 362                         }
 363                         return outCount > 0 || res;
 364                 }
 365
 366         }
 367
 368         internal enum CallType: int
 369         {
 370                 Sync = 0,
 371                 BeginInvoke = 1,
 372                 EndInvoke = 2,
 373                 OneWay = 3
 374         }
 375 }
 376