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//
// 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;
#if NET_2_0
using System.Runtime.ConstrainedExecution;
#endif
namespace System.Threading
{
public
#if NET_2_0
static
#else
sealed
#endif
class Interlocked
{
#if !NET_2_0
private Interlocked () {}
#endif
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public extern static int CompareExchange(ref int location1, int value, int comparand);
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
[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);
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public extern static int Decrement(ref int location);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public extern static long Decrement(ref long location);
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public extern static int Increment(ref int location);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public extern static long Increment(ref long location);
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public extern static int Exchange(ref int location1, int value);
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
[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);
#if NET_2_0
[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);
#else
/* This is needed by the runtime fast path locking */
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal extern static IntPtr CompareExchange(ref IntPtr location1, IntPtr value, IntPtr comparand);
#endif
}
}
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