src/mscorlib/src/System/Runtime/InteropServices/WindowsRuntime/WindowsRuntimeBufferHelper.cs

   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3 // See the LICENSE file in the project root for more information.
   4
   5 using System.Runtime.CompilerServices;
   6 using System.Runtime.ConstrainedExecution;
   7 using System.Runtime.Versioning;
   8 using System.Security;
   9 using System.Threading;
  10
  11
  12 namespace System.Runtime.InteropServices.WindowsRuntime
  13 {
  14     /// <summary>
  15     /// Exposes a helper method that allows <code>WindowsRuntimeBuffer : IBuffer, IBufferInternal</code> which is implemented in
  16     /// <code>System.Runtime.WindowsRuntime.dll</code> to call into the VM.
  17     /// </summary>
  18     [FriendAccessAllowed]
  19     internal static class WindowsRuntimeBufferHelper
  20     {
  21         [DllImport(JitHelpers.QCall)]
  22         private unsafe extern static void StoreOverlappedPtrInCCW(ObjectHandleOnStack windowsRuntimeBuffer, NativeOverlapped* overlapped);
  23
  24
  25         [FriendAccessAllowed]
  26         internal unsafe static void StoreOverlappedInCCW(Object windowsRuntimeBuffer, NativeOverlapped* overlapped)
  27         {
  28             StoreOverlappedPtrInCCW(JitHelpers.GetObjectHandleOnStack(ref windowsRuntimeBuffer), overlapped);
  29         }
  30     }  // class WindowsRuntimeBufferHelper
  31 }  // namespace
  32
  33 // WindowsRuntimeBufferHelper.cs