mcs/class/corlib/System.Runtime.CompilerServices/RuntimeHelpers.cs

   1 // System.Runtime.CompilerServices.RuntimeHelpers
   2 //
   3 // Sean MacIsaac (macisaac@ximian.com)
   4 // Paolo Molaro (lupus@ximian.com)
   5 //
   6 // (C) Ximian, Inc. 2001
   7
   8 //
   9 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 #if NET_2_0
  32 using System.Runtime.ConstrainedExecution;
  33 #endif
  34
  35 namespace System.Runtime.CompilerServices
  36 {
  37 #if NET_2_0
  38         public static class RuntimeHelpers
  39 #else
  40         [Serializable]
  41         public sealed class RuntimeHelpers
  42 #endif
  43         {
  44 #if NET_2_0
  45                 public delegate void TryCode (Object userData);
  46
  47                 public delegate void CleanupCode (Object userData, bool exceptionThrown);
  48 #endif
  49
  50 #if !NET_2_0
  51                 private RuntimeHelpers () {}
  52 #endif
  53
  54                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  55                 static extern void InitializeArray (Array array, IntPtr fldHandle);
  56
  57                 public static void InitializeArray (Array array, RuntimeFieldHandle fldHandle)
  58                 {
  59                         InitializeArray (array, fldHandle.Value);
  60                 }
  61
  62                 public static extern int OffsetToStringData {
  63                         [MethodImpl (MethodImplOptions.InternalCall)]
  64                         get;
  65                 }
  66
  67 #if NET_1_1
  68                 public static int GetHashCode (object o) {
  69                         return Object.InternalGetHashCode (o);
  70                 }
  71
  72                 public static new bool Equals (object o1, object o2) {
  73                         // LAMESPEC: According to MSDN, this is equivalent to
  74                         // Object::Equals (). But the MS version of Object::Equals()
  75                         // includes the functionality of ValueType::Equals(), while
  76                         // our version does not.
  77                         if (o1 == o2)
  78                                 return true;
  79                         if ((o1 == null) || (o2 == null))
  80                                 return false;
  81                         if (o1 is ValueType)
  82                                 return ValueType.DefaultEquals (o1, o2);
  83                         else
  84                                 return Object.Equals (o1, o2);
  85                 }
  86 #endif
  87
  88                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  89                 public static extern object GetObjectValue (object obj);
  90
  91                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  92                 static extern void RunClassConstructor (IntPtr type);
  93
  94                 public static void RunClassConstructor (RuntimeTypeHandle type)
  95                 {
  96                         RunClassConstructor (type.Value);
  97                 }
  98
  99 #if NET_2_0
 100                 [MonoTODO]
 101                 public static void ExecuteCodeWithGuaranteedCleanup (TryCode code, CleanupCode backoutCode, Object userData) {
 102                         throw new NotImplementedException ();
 103                 }
 104
 105                 [MonoTODO]
 106                 [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
 107                 public static void PrepareConstrainedRegions () {
 108                         throw new NotImplementedException ();
 109                 }
 110
 111                 [MonoTODO]
 112                 [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
 113                 public static void PrepareConstrainedRegionsNoOP () {
 114                         throw new NotImplementedException ();
 115                 }
 116
 117                 [MonoTODO]
 118                 [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
 119                 public static void ProbeForSufficientStack() {
 120                         throw new NotImplementedException ();
 121                 }
 122
 123                 [MonoTODO]
 124                 public static void PrepareDelegate (Delegate d) {
 125                         if (d == null)
 126                                 throw new ArgumentNullException ("d");
 127                         throw new NotImplementedException ();
 128                 }
 129
 130                 [MonoTODO]
 131                 public static void PrepareMethod (RuntimeMethodHandle method) {
 132                         throw new NotImplementedException ();
 133                 }
 134
 135                 [MonoTODO]
 136                 public static void PrepareMethod (RuntimeMethodHandle method, RuntimeTypeHandle[] instantiation) {
 137                         throw new NotImplementedException ();
 138                 }
 139
 140                 [MonoTODO]
 141                 public static void RunModuleConstructor (ModuleHandle module) {
 142                         throw new NotImplementedException ();
 143                 }
 144 #endif
 145         }
 146 }