mcs/class/corlib/System.Threading/Interlocked.cs

   1 //
   2 // System.Threading.Interlocked.cs
   3 //
   4 // Author:
   5 //        Patrik Torstensson (patrik.torstensson@labs2.com)
   6 //   Dick Porter (dick@ximian.com)
   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.Runtime.CompilerServices;
  36
  37 #if NET_2_0
  38 using System.Runtime.ConstrainedExecution;
  39 #endif
  40
  41 namespace System.Threading
  42 {
  43         public
  44 #if NET_2_0
  45         static
  46 #else
  47         sealed
  48 #endif
  49         class Interlocked
  50         {
  51
  52 #if !NET_2_0
  53                 private Interlocked () {}
  54 #endif
  55
  56 #if NET_2_0
  57                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
  58 #endif
  59                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  60                 public extern static int CompareExchange(ref int location1, int value, int comparand);
  61
  62 #if NET_2_0
  63                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
  64 #endif
  65                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  66                 public extern static object CompareExchange(ref object location1, object value, object comparand);
  67
  68                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  69                 public extern static float CompareExchange(ref float location1, float value, float comparand);
  70
  71 #if NET_2_0
  72                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
  73 #endif
  74                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  75                 public extern static int Decrement(ref int location);
  76
  77                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  78                 public extern static long Decrement(ref long location);
  79
  80 #if NET_2_0
  81                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
  82 #endif
  83                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  84                 public extern static int Increment(ref int location);
  85
  86                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  87                 public extern static long Increment(ref long location);
  88
  89 #if NET_2_0
  90                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
  91 #endif
  92                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  93                 public extern static int Exchange(ref int location1, int value);
  94
  95 #if NET_2_0
  96                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
  97 #endif
  98                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  99                 public extern static object Exchange(ref object location1, object value);
 100
 101                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 102                 public extern static float Exchange(ref float location1, float value);
 103
 104 #if NET_2_0
 105                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 106                 public extern static long CompareExchange(ref long location1, long value, long comparand);
 107
 108                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
 109                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 110                 public extern static IntPtr CompareExchange(ref IntPtr location1, IntPtr value, IntPtr comparand);
 111
 112                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 113                 public extern static double CompareExchange(ref double location1, double value, double comparand);
 114
 115                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 116                 public extern static long Exchange(ref long location1, long value);
 117
 118                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
 119                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 120                 public extern static IntPtr Exchange(ref IntPtr location1, IntPtr value);
 121
 122                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 123                 public extern static double Exchange(ref double location1, double value);
 124
 125                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 126                 public extern static long Read(ref long location1);
 127
 128                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, CER.Success)]
 129                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 130                 public extern static int Add(ref int location1, int add);
 131
 132                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 133                 public extern static long Add(ref long location1, long add);
 134 #endif
 135         }
 136 }
 137