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// 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);
}
}
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