File size: 1,852 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | // Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
#nullable enable
#if !UNIX
namespace System.Management.Automation.Tracing
{
using System;
/// <summary>
/// An object that can be used to revert the ETW activity ID of the current thread
/// to its original value.
/// </summary>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Etw")]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Reverter")]
public interface IEtwActivityReverter :
IDisposable
{
/// <summary>
/// Reverts the ETW activity ID of the current thread to its original value.
/// </summary>
/// <remarks>
/// <para>Calling <see cref="IDisposable.Dispose"/> has the same effect as
/// calling this method and is useful in the C# "using" syntax.</para>
/// </remarks>
void RevertCurrentActivityId();
}
internal class EtwActivityReverter :
IEtwActivityReverter
{
private readonly IEtwEventCorrelator _correlator;
private readonly Guid _oldActivityId;
private bool _isDisposed;
public EtwActivityReverter(IEtwEventCorrelator correlator, Guid oldActivityId)
{
_correlator = correlator;
_oldActivityId = oldActivityId;
}
public void RevertCurrentActivityId()
{
Dispose();
}
public void Dispose()
{
if (!_isDisposed)
{
_correlator.CurrentActivityId = _oldActivityId;
_isDisposed = true;
GC.SuppressFinalize(this);
}
}
}
}
#endif
|