From 4b11dc566a5bbfa1378d6266525c281b028abcc8 Mon Sep 17 00:00:00 2001 From: Jiyoung Yun Date: Fri, 10 Feb 2017 20:35:12 +0900 Subject: Imported Upstream version 1.0.0.9910 --- ...nterop.WriteFile_SafeHandle_NativeOverlapped.cs | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_NativeOverlapped.cs (limited to 'src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_NativeOverlapped.cs') diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_NativeOverlapped.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_NativeOverlapped.cs new file mode 100644 index 0000000000..dc1e97555b --- /dev/null +++ b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_NativeOverlapped.cs @@ -0,0 +1,22 @@ +// Licensed to the .NET Foundation under one or more agreements. +// The .NET Foundation licenses this file to you under the MIT license. +// See the LICENSE file in the project root for more information. + +using Microsoft.Win32.SafeHandles; +using System; +using System.Runtime.InteropServices; +using System.Threading; +internal partial class Interop +{ + internal partial class Kernel32 + { + // Note there are two different WriteFile prototypes - this is to use + // the type system to force you to not trip across a "feature" in + // Win32's async IO support. You can't do the following three things + // simultaneously: overlapped IO, free the memory for the overlapped + // struct in a callback (or an EndWrite method called by that callback), + // and pass in an address for the numBytesRead parameter. + [DllImport(Libraries.Kernel32, SetLastError = true)] + internal static extern unsafe int WriteFile(SafeHandle handle, byte* bytes, int numBytesToWrite, IntPtr numBytesWritten_mustBeZero, NativeOverlapped* lpOverlapped); + } +} -- cgit v1.2.3