// System.Threading.Interlocked.cs
//
// Author:
+// Patrik Torstensson (patrik.torstensson@labs2.com)
// Dick Porter (dick@ximian.com)
//
// (C) Ximian, Inc. http://www.ximian.com
//
+//
+// Copyright (C) 2004, 2005 Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Runtime.ConstrainedExecution;
namespace System.Threading
{
- public sealed class Interlocked
+ public static class Interlocked
{
- private Interlocked () {}
-
- public static int CompareExchange(ref int location1, int value, int comparand) {
- // lock
- if(comparand==location1) {
- int ret;
-
- ret=location1;
- location1=value;
- return(ret);
- }
- return(location1);
- }
-
- public static object CompareExchange(ref object location1, object value, object comparand) {
- // lock
- if(comparand==location1) {
- object ret;
-
- ret=location1;
- location1=value;
- return(ret);
- }
- return(location1);
- }
-
- public static float CompareExchange(ref float location1, float value, float comparand) {
- // lock
- if(comparand==location1) {
- float ret;
-
- ret=location1;
- location1=value;
- return(ret);
- }
- return(location1);
- }
-
- public static int Decrement(ref int location) {
- // lock
- location--;
- return(location);
- }
-
- public static long Decrement(ref long location) {
- // lock
- location--;
- return(location);
- }
-
- public static int Exchange(ref int location1, int value) {
- // lock
- int ret;
-
- ret=location1;
- location1=value;
- return(ret);
- }
-
- public static object Exchange(ref object location1, object value) {
- // lock
- object ret;
-
- ret=location1;
- location1=value;
- return(ret);
- }
-
- public static float Exchange(ref float location1, float value) {
- // lock
- float ret;
-
- ret=location1;
- location1=value;
- return(ret);
- }
-
- public static int Increment(ref int location) {
- // lock
- location++;
- return(location);
- }
-
- public static long Increment(ref long location) {
- // lock
- location++;
- return(location);
- }
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static int CompareExchange(ref int location1, int value, int comparand);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static object CompareExchange(ref object location1, object value, object comparand);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static float CompareExchange(ref float location1, float value, float comparand);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static int Decrement(ref int location);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static long Decrement(ref long location);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static int Increment(ref int location);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static long Increment(ref long location);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static int Exchange(ref int location1, int value);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static object Exchange(ref object location1, object value);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static float Exchange(ref float location1, float value);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static long CompareExchange(ref long location1, long value, long comparand);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static IntPtr CompareExchange(ref IntPtr location1, IntPtr value, IntPtr comparand);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static double CompareExchange(ref double location1, double value, double comparand);
+
+ [ComVisible (false)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ [ReliabilityContract (Consistency.WillNotCorruptState, Cer.Success)]
+ public extern static T CompareExchange<T> (ref T location1, T value, T comparand) where T:class;
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static long Exchange(ref long location1, long value);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static IntPtr Exchange(ref IntPtr location1, IntPtr value);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static double Exchange(ref double location1, double value);
+
+ [ComVisible (false)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ [ReliabilityContract (Consistency.WillNotCorruptState, Cer.Success)]
+ public extern static T Exchange<T> (ref T location1, T value) where T:class;
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static long Read(ref long location);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static int Add(ref int location1, int value);
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static long Add(ref long location1, long value);
}
}
-
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