diff options
Diffstat (limited to 'src/mscorlib/corefx/Interop/Windows/mincore/Interop.WriteFile_SafeHandle_IntPtr.cs')
-rw-r--r-- | src/mscorlib/corefx/Interop/Windows/mincore/Interop.WriteFile_SafeHandle_IntPtr.cs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/mscorlib/corefx/Interop/Windows/mincore/Interop.WriteFile_SafeHandle_IntPtr.cs b/src/mscorlib/corefx/Interop/Windows/mincore/Interop.WriteFile_SafeHandle_IntPtr.cs new file mode 100644 index 0000000000..052ba3ce7d --- /dev/null +++ b/src/mscorlib/corefx/Interop/Windows/mincore/Interop.WriteFile_SafeHandle_IntPtr.cs @@ -0,0 +1,24 @@ +// 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; + +internal partial class Interop +{ + internal partial class mincore + { + // 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.CoreFile_L1, SetLastError = true)] + internal static unsafe extern int WriteFile(SafeHandle handle, byte* bytes, int numBytesToWrite, out int numBytesWritten, IntPtr mustBeZero); + + } +} |