netcore/System.Private.CoreLib/shared/Interop/Windows/Advapi32/Interop.EventWriteTransfer.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;
   6 using System.Runtime.InteropServices;
   7 #if ES_BUILD_STANDALONE
   8 using Microsoft.Diagnostics.Tracing;
   9 #else
  10 using System.Diagnostics.Tracing;
  11 #endif
  12
  13 internal static partial class Interop
  14 {
  15     internal static partial class Advapi32
  16     {
  17         /// <summary>
  18         ///  Call the ETW native API EventWriteTransfer and checks for invalid argument error.
  19         ///  The implementation of EventWriteTransfer on some older OSes (Windows 2008) does not accept null relatedActivityId.
  20         ///  So, for these cases we will retry the call with an empty Guid.
  21         /// </summary>
  22         internal static unsafe int EventWriteTransfer(
  23             long registrationHandle,
  24             in EventDescriptor eventDescriptor,
  25             Guid* activityId,
  26             Guid* relatedActivityId,
  27             int userDataCount,
  28             EventProvider.EventData* userData)
  29         {
  30             int HResult = EventWriteTransfer_PInvoke(registrationHandle, in eventDescriptor, activityId, relatedActivityId, userDataCount, userData);
  31             if (HResult == Errors.ERROR_INVALID_PARAMETER && relatedActivityId == null)
  32             {
  33                 Guid emptyGuid = Guid.Empty;
  34                 HResult = EventWriteTransfer_PInvoke(registrationHandle, in eventDescriptor, activityId, &emptyGuid, userDataCount, userData);
  35             }
  36
  37             return HResult;
  38         }
  39
  40         [DllImport(Interop.Libraries.Advapi32, ExactSpelling = true, EntryPoint = "EventWriteTransfer")]
  41         private static extern unsafe int EventWriteTransfer_PInvoke(
  42             long registrationHandle,
  43             in EventDescriptor eventDescriptor,
  44             Guid* activityId,
  45             Guid* relatedActivityId,
  46             int userDataCount,
  47             EventProvider.EventData* userData);
  48     }
  49 }