IntPtr.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 / clr / src / BCL / System / IntPtr.cs / 1305376 / IntPtr.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  IntPtr 
**
** 
** Purpose: Platform independent integer
**
**
===========================================================*/ 

namespace System { 
 
    using System;
    using System.Globalization; 
    using System.Runtime;
    using System.Runtime.Serialization;
    using System.Runtime.CompilerServices;
    using System.Runtime.ConstrainedExecution; 
    using System.Diagnostics.Contracts;
 
    [Serializable] 
[System.Runtime.InteropServices.ComVisible(true)]
    public struct IntPtr : ISerializable 
    {

        unsafe private void* m_value; // The compiler treats void* closest to uint hence explicit casts are required to preserve int behavior
 
        public static readonly IntPtr Zero;
 
        // fast way to compare IntPtr to (IntPtr)0 while IntPtr.Zero doesn't work due to slow statics access 
        [System.Security.SecuritySafeCritical]  // auto-generated
        [Pure] 
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
        internal unsafe bool IsNull()
        {
            return (this.m_value == null); 
        }
 
        [System.Security.SecuritySafeCritical]  // auto-generated 
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
#if !FEATURE_CORECLR 
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif
        public unsafe IntPtr(int value)
        { 
            #if WIN32
                m_value = (void *)value; 
            #else 
                m_value = (void *)(long)value;
            #endif 
        }

        [System.Security.SecuritySafeCritical]  // auto-generated
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)] 
#if !FEATURE_CORECLR
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] 
#endif 
        public unsafe IntPtr(long value)
        { 
            #if WIN32
                m_value = (void *)checked((int)value);
            #else
                m_value = (void *)value; 
            #endif
        } 
 
        [System.Security.SecurityCritical]  // auto-generated
        [CLSCompliant(false)] 
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
        public unsafe IntPtr(void* value)
        {
            m_value = value; 
        }
 
        [System.Security.SecurityCritical]  // auto-generated 
        private unsafe IntPtr(SerializationInfo info, StreamingContext context) {
            long l = info.GetInt64("value"); 

            if (Size==4 && (l>Int32.MaxValue || l() != null); 

            #if WIN32 
                return ((int)m_value).ToString(format, CultureInfo.InvariantCulture);
            #else
                return ((long)m_value).ToString(format, CultureInfo.InvariantCulture);
            #endif 
        }
 
 
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
#if !FEATURE_CORECLR 
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif
        public static explicit operator IntPtr (int value)
        { 
            return new IntPtr(value);
        } 
 
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
#if !FEATURE_CORECLR 
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif
        public static explicit operator IntPtr (long value)
        { 
            return new IntPtr(value);
        } 
 
        [System.Security.SecurityCritical]  // auto-generated
        [CLSCompliant(false), ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)] 
#if !FEATURE_CORECLR
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif
        public static unsafe explicit operator IntPtr (void* value) 
        {
            return new IntPtr(value); 
        } 

        [System.Security.SecuritySafeCritical]  // auto-generated 
        [CLSCompliant(false)]
#if !FEATURE_CORECLR
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif 
        public static unsafe explicit operator void* (IntPtr value)
        { 
            return value.ToPointer(); 
        }
 
        [System.Security.SecuritySafeCritical]  // auto-generated
#if !FEATURE_CORECLR
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif 
        public unsafe static explicit operator int (IntPtr  value)
        { 
            #if WIN32 
                return (int)value.m_value;
            #else 
                long l = (long)value.m_value;
                return checked((int)l);
            #endif
        } 

        [System.Security.SecuritySafeCritical]  // auto-generated 
#if !FEATURE_CORECLR 
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif 
        public unsafe static explicit operator long (IntPtr  value)
        {
            #if WIN32
                return (long)(int)value.m_value; 
            #else
                return (long)value.m_value; 
            #endif 
        }
 
        [System.Security.SecuritySafeCritical]  // auto-generated
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
#if !FEATURE_CORECLR
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] 
#endif
        public unsafe static bool operator == (IntPtr value1, IntPtr value2) 
        { 
            return value1.m_value == value2.m_value;
        } 

        [System.Security.SecuritySafeCritical]  // auto-generated
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
#if !FEATURE_CORECLR 
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif 
        public unsafe static bool operator != (IntPtr value1, IntPtr value2) 
        {
            return value1.m_value != value2.m_value; 
        }

        [System.Security.SecuritySafeCritical]  // auto-generated
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)] 
#if !FEATURE_CORECLR
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] 
#endif 
        public static IntPtr Add(IntPtr pointer, int offset)
        { 
            return pointer + offset;
        }

        [System.Security.SecuritySafeCritical]  // auto-generated 
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
#if !FEATURE_CORECLR 
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] 
#endif
        public static IntPtr operator +(IntPtr pointer, int offset) 
        {
            #if WIN32
                return new IntPtr(pointer.ToInt32() + offset);
            #else 
                return new IntPtr(pointer.ToInt64() + offset);
            #endif 
        } 

        [System.Security.SecuritySafeCritical]  // auto-generated 
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
#if !FEATURE_CORECLR
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif 
        public static IntPtr Subtract(IntPtr pointer, int offset) {
            return pointer - offset; 
        } 

        [System.Security.SecuritySafeCritical]  // auto-generated 
        [ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
#if !FEATURE_CORECLR
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif 
        public static IntPtr operator -(IntPtr pointer, int offset) {
            #if WIN32 
                return new IntPtr(pointer.ToInt32() - offset); 
            #else
                return new IntPtr(pointer.ToInt64() - offset); 
            #endif
        }

        public static int Size 
        {
            [Pure] 
            [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 
#if !FEATURE_CORECLR
            [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] 
#endif
            get
            {
                #if WIN32 
                    return 4;
                #else 
                    return 8; 
                #endif
            } 
        }


        [System.Security.SecuritySafeCritical]  // auto-generated 
        [CLSCompliant(false)]
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 
#if !FEATURE_CORECLR 
        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
#endif 
        public unsafe void* ToPointer()
        {
            return m_value;
        } 
    }
} 
 


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

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