2 // System.Threading.Interlocked.cs
5 // Patrik Torstensson (patrik.torstensson@labs2.com)
6 // Dick Porter (dick@ximian.com)
8 // (C) Ximian, Inc. http://www.ximian.com
12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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:
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
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.
35 using System.Runtime.CompilerServices;
37 namespace System.Threading
49 private Interlocked () {}
52 [MethodImplAttribute(MethodImplOptions.InternalCall)]
53 public extern static int CompareExchange(ref int location1, int value, int comparand);
55 [MethodImplAttribute(MethodImplOptions.InternalCall)]
56 public extern static object CompareExchange(ref object location1, object value, object comparand);
58 [MethodImplAttribute(MethodImplOptions.InternalCall)]
59 public extern static float CompareExchange(ref float location1, float value, float comparand);
61 [MethodImplAttribute(MethodImplOptions.InternalCall)]
62 public extern static int Decrement(ref int location);
64 [MethodImplAttribute(MethodImplOptions.InternalCall)]
65 public extern static long Decrement(ref long location);
67 [MethodImplAttribute(MethodImplOptions.InternalCall)]
68 public extern static int Increment(ref int location);
70 [MethodImplAttribute(MethodImplOptions.InternalCall)]
71 public extern static long Increment(ref long location);
73 [MethodImplAttribute(MethodImplOptions.InternalCall)]
74 public extern static int Exchange(ref int location1, int value);
76 [MethodImplAttribute(MethodImplOptions.InternalCall)]
77 public extern static object Exchange(ref object location1, object value);
79 [MethodImplAttribute(MethodImplOptions.InternalCall)]
80 public extern static float Exchange(ref float location1, float value);