SafeBitVector32.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Configuration / System / Configuration / SafeBitVector32.cs / 1305376 / SafeBitVector32.cs

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System; 
using System.Threading; 

namespace System.Configuration { 
    //
    // This is a multithreadsafe version of System.Collections.Specialized.BitVector32.
    //
    [Serializable] 
    internal struct SafeBitVector32 {
        private volatile int _data; 
 
        internal SafeBitVector32(int data) {
            this._data = data; 
        }

#if UNUSED_CODE
        internal bool IsAnySet(int bitMask) { 
            int data = _data;
            return (data & bitMask) != 0; 
        } 
#endif
 
        internal bool this[int bit] {
            get {
                int data = _data;
                return (data & bit) == bit; 
            }
            set { 
                for (;;) { 
                    int oldData = _data;
                    int newData; 
                    if (value) {
                        newData = oldData | bit;
                    }
                    else { 
                        newData = oldData & ~bit;
                    } 
 
#pragma warning disable 0420
                    int result = Interlocked.CompareExchange(ref _data, newData, oldData); 
#pragma warning restore 0420

                    if (result == oldData) {
                        break; 
                    }
                } 
            } 
        }
    } 
}


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

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