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Fix DiagnosticSource to work with NativeAOT #76109

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merged 7 commits into from
Sep 28, 2022
Merged

Fix DiagnosticSource to work with NativeAOT #76109

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1227d64
Fix DiagnosticSource to work with NativeAOT
eerhardt Sep 23, 2022
ba624bf
Enable new NativeAotTests in CI
eerhardt Sep 26, 2022
b633e7f
Fix NativeAOT tests
eerhardt Sep 27, 2022
3b4f5bd
Fix test CI leg
eerhardt Sep 27, 2022
ccca518
Set IlcFrameworkNativePath correctly
eerhardt Sep 27, 2022
9aeca47
Don't run NativeAot published app tests on OSX since it isn't supported
eerhardt Sep 27, 2022
15824c8
Respond to PR feedback
eerhardt Sep 28, 2022
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3 changes: 3 additions & 0 deletions eng/pipelines/coreclr/nativeaot-post-build-steps.yml
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Expand Up @@ -29,3 +29,6 @@ steps:
- ${{ if ne(parameters.osGroup, 'windows') }}:
- script: $(Build.SourcesDirectory)/src/tests/run.sh --runnativeaottests $(buildConfigUpper) ${{ parameters.archType }}
displayName: Run tests in single file mode

- script: $(Build.SourcesDirectory)$(dir)build$(scriptExt) -ci -arch ${{ parameters.archType }} $(_osParameter) -s libs.tests -c $(_BuildConfig) /p:TestAssemblies=false /p:TestNativeAot=true $(_officialBuildParameter) $(_crossBuildPropertyArg) /bl:$(Build.SourcesDirectory)/artifacts/log/$(buildConfigUpper)/NativeAotTests.binlog ${{ parameters.extraTestArgs }}
displayName: Run NativeAot Library Tests
4 changes: 3 additions & 1 deletion eng/testing/linker/SupportFiles/Directory.Build.props
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Expand Up @@ -2,7 +2,6 @@
<PropertyGroup>
<SkipConfigureTrimming>true</SkipConfigureTrimming>
<PublishTrimmed>true</PublishTrimmed>
<SkipImportRepoLinkerTargets>true</SkipImportRepoLinkerTargets>
<TrimMode>full</TrimMode>
<TrimmerRemoveSymbols>false</TrimmerRemoveSymbols>
<SelfContained>true</SelfContained>
Expand All @@ -13,5 +12,8 @@
<EnableTrimAnalyzer>false</EnableTrimAnalyzer>
<SuppressTrimAnalysisWarnings>true</SuppressTrimAnalysisWarnings>
<NoWarn>$(NoWarn);IL2121</NoWarn>

<!-- EventSourceSupport is disabled by default with PublishAot=true, so need to enable it here. -->
<EventSourceSupport>true</EventSourceSupport>
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@MichalStrehovsky @jkotas - with this change we now have tests ensuring EventSource works (at least in proc) with PublishAot. Do you think in .NET 8 we should re-enable EventSourceSupport=true by default? Or do you think we should keep it disabled by default going forward (for size savings?)

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@jkotas jkotas Sep 26, 2022 •
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I would wait for feedback on the current .NET 7 default before doing more changes.

I think it makes sense to leave it off by default and turn it on only for server app-models in their SDKs.

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Agree with Jan. I kind of like the size savings. I would like to see feedback. Re-enabling it is an instant 30% size regression from 7.0 for hello world.

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FYI - @noahfalk @tommcdon

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Just curious, how big (in bytes) is 30%? I wouldn't have guessed the savings were such a high percentage but I don't know if that is because I overestimated the size of HelloWorld or underestimated the size of EventSource.

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Yes, we have a log and I'm hoping to do some offcycle work to visualize/diff them.

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I've love to see the results of this. Agreed with @noahfalk that this is more than I would have expected. It feels important to describe the diagnostic expectations for native AOT in .NET 8 so that we can determine how this decision fits in.

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There's a similar difference for PublishTrimmed as well - the size of managed code goes from 2,718,848 bytes to 3,003,008. So the cost is about 300 kB in IL terms. (The repro steps for both is basically just run dotnet publish -r win-x64 -c Release with -p:PublishTrimmed=true for trimming or -p:PublishAot=true for NativeAOT. Use -p:EventSourceSupport=false to enable/disable EventSource.)

For the NativeAOT case a quick breakdown is following.

Size of code per namespace with EventSource enabled

Namespace Size of code in bytes
System 414,414
System.Collections.Generic 246,832
System.Globalization 128,834
Internal.Runtime.TypeLoader 128,583
System.Diagnostics.Tracing 116,975
System.Text 92,958
Internal.TypeSystem 85,341
System.Reflection 40,905
System.Reflection.Runtime.TypeInfos 36,802
System.Collections.Concurrent 34,363
System.Reflection.Runtime.General 31,092
System.Numerics 30,384
System.Threading 27,273
Internal.Reflection.Execution 27,180
System.IO 26,659
System.Resources 25,769
System.Reflection.Runtime.MethodInfos 22,513
System.Runtime 21,400
System.Runtime.CompilerServices 20,287
System.Buffers 20,055

Size of code per namespace with EventSource disabled

Namespace Size of code in bytes
System 306,356
System.Collections.Generic 156,429
Internal.Runtime.TypeLoader 127,630
System.Globalization 107,047
System.Text 86,065
Internal.TypeSystem 85,341
System.Reflection 36,931
System.Reflection.Runtime.TypeInfos 35,576
System.Collections.Concurrent 34,363
System.Numerics 30,384
System.Reflection.Runtime.General 27,776
System.IO 26,299
Internal.Reflection.Execution 25,920
System.Resources 25,445
System.Runtime 21,336

(This is just namespaces with more than 20 kB of code)

Most of the cost is in transitive dependencies. EventSource has a big transitive closure and depends on a lot of framework code.

I can file an issue if there's interest in reducing the transtive closure.

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Most of the cost is in transitive dependencies. EventSource has a big transitive closure and depends on a lot of framework code.

This tells me that this is the upper bound of the size savings for having EventSource disabled. In a real world app that uses these transitive dependencies, they won't be able to be trimmed. So the size savings of disabling EventSource will be less. For example, 90 kB of size savings is coming from System.Collections.Generic which many apps will use. When the app uses those collections, they won't be able to be trimmed anymore, even with EventSource disabled.

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So the size savings of disabling EventSource will be less. For example, 90 kB of size savings is coming from System.Collections.Generic which many apps will use. When the app uses those collections, they won't be able to be trimmed anymore, even with EventSource disabled

That depends - when thinking about native code, one needs to think about instantiated generic code. For example the costs associated with System.Collections.Generic.Dictionary2<System.Type,System.Diagnostics.Tracing.TraceLoggingTypeInfo>` are exclusive to EventSource not matter what the app does.

It's easy to test out theories - just pick a bigger app and see the impact of EventSource. For apps the size of current ASP.NET, an extra 600 kB overhead is negligible either way,

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</PropertyGroup>
</Project>
4 changes: 4 additions & 0 deletions eng/testing/linker/SupportFiles/Directory.Build.targets
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Expand Up @@ -12,6 +12,10 @@
DependsOnTargets="BundleTestWasmApp"
Condition="'$(TargetArchitecture)' == 'wasm' And '$(TargetOS)' == 'browser'" />

<PropertyGroup Condition="'$(PublishAot)' == 'true'">
<ILCompilerTargetsPath>$(CoreCLRBuildIntegrationDir)Microsoft.DotNet.ILCompiler.SingleEntry.targets</ILCompilerTargetsPath>
</PropertyGroup>

<!-- Overriding these targets as these projects won't need to binplace -->
<Target Name="PublishTestAsSelfContained" />

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8 changes: 8 additions & 0 deletions eng/testing/linker/project.csproj.template
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Expand Up @@ -6,6 +6,7 @@
<NETCoreAppMaximumVersion>{NetCoreAppMaximumVersion}</NETCoreAppMaximumVersion>
<UseMonoRuntime>{UseMonoRuntime}</UseMonoRuntime>
<RuntimeIdentifier>{RuntimeIdentifier}</RuntimeIdentifier>
<PublishAot>{PublishAot}</PublishAot>

<!-- wasm specific -->
<MonoAOTCompilerDir>{MonoAOTCompilerDir}</MonoAOTCompilerDir>
Expand All @@ -25,6 +26,13 @@

<RepositoryEngineeringDir>{RepositoryEngineeringDir}</RepositoryEngineeringDir>
<_ExtraTrimmerArgs>{ExtraTrimmerArgs} $(_ExtraTrimmerArgs)</_ExtraTrimmerArgs>

<!-- Needed for PublishAot -->
<IlcToolsPath>{IlcToolsPath}</IlcToolsPath>
<IlcBuildTasksPath>{IlcBuildTasksPath}</IlcBuildTasksPath>
<IlcSdkPath>{IlcSdkPath}</IlcSdkPath>
<IlcFrameworkPath>{IlcFrameworkPath}</IlcFrameworkPath>
<CoreCLRBuildIntegrationDir>{CoreCLRBuildIntegrationDir}</CoreCLRBuildIntegrationDir>
</PropertyGroup>

<ItemGroup>
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6 changes: 6 additions & 0 deletions eng/testing/linker/trimmingTests.targets
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Expand Up @@ -85,8 +85,14 @@
.Replace('{NetCoreAppMaximumVersion}', '$(NetCoreAppMaximumVersion)')
.Replace('{UseMonoRuntime}','$(UseMonoRuntime)')
.Replace('{RuntimeIdentifier}','%(TestConsoleApps.TestRuntimeIdentifier)')
.Replace('{PublishAot}','$(IsNativeAotTestProject)')
.Replace('{MicrosoftNETILLinkTasksVersion}', '$(MicrosoftNETILLinkTasksVersion)')
.Replace('{ExtraTrimmerArgs}', '%(TestConsoleApps.ExtraTrimmerArgs)')
.Replace('{IlcToolsPath}', '$(CoreCLRILCompilerDir)')
.Replace('{IlcBuildTasksPath}', '$(CoreCLRILCompilerDir)netstandard/ILCompiler.Build.Tasks.dll')
.Replace('{IlcSdkPath}', '$(CoreCLRAotSdkDir)')
.Replace('{IlcFrameworkPath}', '$(MicrosoftNetCoreAppRuntimePackRidLibTfmDir)')
.Replace('{CoreCLRBuildIntegrationDir}', '$(CoreCLRBuildIntegrationDir)')
.Replace('{RuntimeHostConfigurationOptions}', '$(_runtimeHostConfigurationOptionsString)')
.Replace('{AdditionalProjectReferences}', '$(_additionalProjectReferencesString)')
.Replace('{RepositoryEngineeringDir}', '$(RepositoryEngineeringDir)')
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10 changes: 6 additions & 4 deletions src/libraries/Directory.Build.props
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Expand Up @@ -22,10 +22,12 @@
<PropertyGroup Condition="$(MSBuildProjectFullPath.Contains('$([System.IO.Path]::DirectorySeparatorChar)tests$([System.IO.Path]::DirectorySeparatorChar)'))">
<IsTestProject Condition="$(MSBuildProjectName.EndsWith('.UnitTests')) or $(MSBuildProjectName.EndsWith('.Tests'))">true</IsTestProject>
<IsTrimmingTestProject Condition="$(MSBuildProjectName.EndsWith('.TrimmingTests'))">true</IsTrimmingTestProject>
<IsTestSupportProject Condition="'$(IsTestProject)' != 'true' and '$(IsTrimmingTestProject)' != 'true'">true</IsTestSupportProject>
<IsNativeAotTestProject Condition="$(MSBuildProjectName.EndsWith('.NativeAotTests'))">true</IsNativeAotTestProject>
<IsPublishedAppTestProject Condition="'$(IsTrimmingTestProject)' == 'true' or '$(IsNativeAotTestProject)' == 'true'">true</IsPublishedAppTestProject>
<IsTestSupportProject Condition="'$(IsTestProject)' != 'true' and '$(IsPublishedAppTestProject)' != 'true'">true</IsTestSupportProject>

<!-- Treat test assemblies as non-shipping (do not publish or sign them). -->
<IsShipping Condition="'$(IsTestProject)' == 'true' or '$(IsTestSupportProject)' == 'true' or '$(IsTrimmingTestProject)' == 'true'">false</IsShipping>
<IsShipping Condition="'$(IsTestProject)' == 'true' or '$(IsTestSupportProject)' == 'true' or '$(IsPublishedAppTestProject)' == 'true'">false</IsShipping>
</PropertyGroup>

<PropertyGroup>
Expand All @@ -36,14 +38,14 @@
'$(IsReferenceAssemblyProject)' != 'true' and
'$(IsGeneratorProject)' != 'true' and
'$(IsTestProject)' != 'true' and
'$(IsTrimmingTestProject)' != 'true' and
'$(IsPublishedAppTestProject)' != 'true' and
'$(IsTestSupportProject)' != 'true' and
'$(UsingMicrosoftNoTargetsSdk)' != 'true' and
'$(UsingMicrosoftTraversalSdk)' != 'true'">true</IsSourceProject>
</PropertyGroup>

<!-- Warnings that should be disabled in our test projects. -->
<PropertyGroup Condition="'$(IsTestProject)' == 'true' or '$(IsTestSupportProject)' == 'true' or '$(IsTrimmingTestProject)' == 'true'">
<PropertyGroup Condition="'$(IsTestProject)' == 'true' or '$(IsTestSupportProject)' == 'true' or '$(IsPublishedAppTestProject)' == 'true'">
<!-- don't warn on usage of BinaryFormatter from test projects -->
<NoWarn>$(NoWarn);SYSLIB0011</NoWarn>
<!-- don't warn about unnecessary trim warning suppressions. can be removed with preview 6. -->
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2 changes: 1 addition & 1 deletion src/libraries/Directory.Build.targets
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Expand Up @@ -127,7 +127,7 @@
<Import Project="$(RepositoryEngineeringDir)references.targets" />
<Import Project="$(RepositoryEngineeringDir)resolveContract.targets" />
<Import Project="$(RepositoryEngineeringDir)testing\tests.targets" Condition="'$(EnableTestSupport)' == 'true'" />
<Import Project="$(RepositoryEngineeringDir)testing\linker\trimmingTests.targets" Condition="'$(IsTrimmingTestProject)' == 'true'" />
<Import Project="$(RepositoryEngineeringDir)testing\linker\trimmingTests.targets" Condition="'$(IsPublishedAppTestProject)' == 'true'" />
<Import Project="$(RepositoryEngineeringDir)testing\runtimeConfiguration.targets" />
<Import Project="$(RepositoryEngineeringDir)testing\runsettings.targets" Condition="'$(EnableRunSettingsSupport)' == 'true'" />
<Import Project="$(RepositoryEngineeringDir)testing\coverage.targets" Condition="'$(EnableRunSettingsSupport)' == 'true' or '$(EnableCoverageSupport)' == 'true'" />
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2 changes: 0 additions & 2 deletions src/libraries/Microsoft.Extensions.Hosting/src/HostBuilder.cs
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Expand Up @@ -188,8 +188,6 @@ internal static DiagnosticListener LogHostBuilding(HostApplicationBuilder hostAp
return diagnosticListener;
}

[UnconditionalSuppressMessage("AOT", "IL3050:RequiresDynamicCode",
Justification = "DiagnosticSource is used here to pass objects in-memory to code using HostFactoryResolver. This won't require creating new generic types.")]
[UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:UnrecognizedReflectionPattern",
Justification = "The values being passed into Write are being consumed by the application already.")]
private static void Write<T>(
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2 changes: 0 additions & 2 deletions src/libraries/System.Diagnostics.DiagnosticSource/ref/System.Diagnostics.DiagnosticSource.cs
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Expand Up @@ -20,7 +20,6 @@ public virtual void Dispose() { }
public virtual System.IDisposable Subscribe(System.IObserver<System.Collections.Generic.KeyValuePair<string, object?>> observer, System.Predicate<string>? isEnabled) { throw null; }
public override string ToString() { throw null; }
[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The type of object being written to DiagnosticSource cannot be discovered statically.")]
[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("DiagnosticSource may require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]
public override void Write(string name, object? value) { }
}
public abstract partial class DiagnosticSource
Expand All @@ -29,7 +28,6 @@ protected DiagnosticSource() { }
public abstract bool IsEnabled(string name);
public virtual bool IsEnabled(string name, object? arg1, object? arg2 = null) { throw null; }
[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The type of object being written to DiagnosticSource cannot be discovered statically.")]
[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("DiagnosticSource may require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]
public abstract void Write(string name, object? value);
}
}
2 changes: 0 additions & 2 deletions ...es/System.Diagnostics.DiagnosticSource/ref/System.Diagnostics.DiagnosticSourceActivity.cs
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Expand Up @@ -197,10 +197,8 @@ public abstract partial class DiagnosticSource
public virtual void OnActivityExport(System.Diagnostics.Activity activity, object? payload) { }
public virtual void OnActivityImport(System.Diagnostics.Activity activity, object? payload) { }
[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The type of object being written to DiagnosticSource cannot be discovered statically.")]
[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("DiagnosticSource may require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]
public System.Diagnostics.Activity StartActivity(System.Diagnostics.Activity activity, object? args) { throw null; }
[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The type of object being written to DiagnosticSource cannot be discovered statically.")]
[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("DiagnosticSource may require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]
public void StopActivity(System.Diagnostics.Activity activity, object? args) { }
}
public enum ActivitySamplingResult
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2 changes: 2 additions & 0 deletions ...raries/System.Diagnostics.DiagnosticSource/src/System.Diagnostics.DiagnosticSource.csproj
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Expand Up @@ -87,6 +87,8 @@ System.Diagnostics.DiagnosticSource</PackageDescription>
<Compile Include="System\Diagnostics\System.Diagnostics.DiagnosticSource.Typeforwards.netcoreapp.cs" />
<Compile Include="$(CommonPath)System\LocalAppContextSwitches.Common.cs"
Link="Common\System\LocalAppContextSwitches.Common.cs" />
<Compile Include="$(CommonPath)System\Text\ValueStringBuilder.cs"
Link="Common\System\Text\ValueStringBuilder.cs" />
</ItemGroup>

<ItemGroup Condition="'$(TargetFrameworkIdentifier)' != '.NETCoreApp'">
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3 changes: 0 additions & 3 deletions ...ibraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/DiagnosticListener.cs
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Expand Up @@ -34,8 +34,6 @@ public partial class DiagnosticListener : DiagnosticSource, IObservable<KeyValue
/// </summary>
public static IObservable<DiagnosticListener> AllListeners
{
[UnconditionalSuppressMessage("AotAnalysis", "IL3050:RequiresDynamicCode",
Justification = "ENABLE_HTTP_HANDLER is not enabled in the .NET current version")]
get
{
#if ENABLE_HTTP_HANDLER
Expand Down Expand Up @@ -255,7 +253,6 @@ public override bool IsEnabled(string name, object? arg1, object? arg2 = null)
/// Override abstract method
/// </summary>
[RequiresUnreferencedCode(WriteRequiresUnreferencedCode)]
[RequiresDynamicCode(WriteRequiresDynamicCode)]
public override void Write(string name, object? value)
{
for (DiagnosticSubscription? curSubscription = _subscriptions; curSubscription != null; curSubscription = curSubscription.Next)
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2 changes: 0 additions & 2 deletions src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/DiagnosticSource.cs
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Expand Up @@ -17,7 +17,6 @@ namespace System.Diagnostics
public abstract partial class DiagnosticSource
{
internal const string WriteRequiresUnreferencedCode = "The type of object being written to DiagnosticSource cannot be discovered statically.";
internal const string WriteRequiresDynamicCode = "DiagnosticSource may require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.";

/// <summary>
/// Write is a generic way of logging complex payloads. Each notification
Expand All @@ -36,7 +35,6 @@ public abstract partial class DiagnosticSource
/// <param name="value">An object that represent the value being passed as a payload for the event.
/// This is often an anonymous type which contains several sub-values.</param>
[RequiresUnreferencedCode(WriteRequiresUnreferencedCode)]
[RequiresDynamicCode(WriteRequiresDynamicCode)]
public abstract void Write(string name, object? value);

/// <summary>
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2 changes: 0 additions & 2 deletions ...es/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/DiagnosticSourceActivity.cs
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Expand Up @@ -26,7 +26,6 @@ public abstract partial class DiagnosticSource
/// <returns>Started Activity for convenient chaining</returns>
/// <seealso cref="Activity"/>
[RequiresUnreferencedCode(WriteRequiresUnreferencedCode)]
[RequiresDynamicCode(WriteRequiresDynamicCode)]
public Activity StartActivity(Activity activity, object? args)
{
activity.Start();
Expand All @@ -45,7 +44,6 @@ public Activity StartActivity(Activity activity, object? args)
/// <param name="args">An object that represent the value being passed as a payload for the event.</param>
/// <seealso cref="Activity"/>
[RequiresUnreferencedCode(WriteRequiresUnreferencedCode)]
[RequiresDynamicCode(WriteRequiresDynamicCode)]
public void StopActivity(Activity activity, object? args)
{
// Stop sets the end time if it was unset, but we want it set before we issue the write
Expand Down
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