Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Reflection / Pointer.cs / 1305376 / Pointer.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //////////////////////////////////////////////////////////////////////////////// // // This is a wrapper class for Pointers // //[....] // // // // namespace System.Reflection { using System; using CultureInfo = System.Globalization.CultureInfo; using System.Runtime.Serialization; using System.Diagnostics.Contracts; [CLSCompliant(false)] [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public sealed class Pointer: ISerializable { unsafe private void* _ptr; private RuntimeType _ptrType; private Pointer() {} [System.Security.SecurityCritical] // auto-generated private unsafe Pointer(SerializationInfo info, StreamingContext context) { _ptr = ((IntPtr)(info.GetValue("_ptr", typeof(IntPtr)))).ToPointer(); _ptrType = (RuntimeType)info.GetValue("_ptrType", typeof(RuntimeType)); } // This method will box an pointer. We save both the // value and the type so we can access it from the native code // during an Invoke. [System.Security.SecurityCritical] // auto-generated public static unsafe Object Box(void *ptr,Type type) { if (type == null) throw new ArgumentNullException("type"); if (!type.IsPointer) throw new ArgumentException(Environment.GetResourceString("Arg_MustBePointer"),"ptr"); Contract.EndContractBlock(); RuntimeType rt = type as RuntimeType; if (rt == null) throw new ArgumentException(Environment.GetResourceString("Arg_MustBePointer"), "ptr"); Pointer x = new Pointer(); x._ptr = ptr; x._ptrType = rt; return x; } // Returned the stored pointer. [System.Security.SecurityCritical] // auto-generated public static unsafe void* Unbox(Object ptr) { if (!(ptr is Pointer)) throw new ArgumentException(Environment.GetResourceString("Arg_MustBePointer"),"ptr"); return ((Pointer)ptr)._ptr; } internal RuntimeType GetPointerType() { return _ptrType; } [System.Security.SecurityCritical] // auto-generated internal unsafe Object GetPointerValue() { return (IntPtr)_ptr; } #if FEATURE_SERIALIZATION [System.Security.SecurityCritical] unsafe void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context) { info.AddValue("_ptr", new IntPtr(_ptr)); info.AddValue("_ptrType", _ptrType); } #endif } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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