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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 System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices.WindowsRuntime;
// Windows.Foundation.Diagnostics cannot be referenced from managed code because
// they're hidden by the metadata adapter. We redeclare the interfaces manually
// to be able to talk to native WinRT objects.
namespace Windows.Foundation.Diagnostics
{
[ComImport]
[Guid("50850B26-267E-451B-A890-AB6A370245EE")]
[WindowsRuntimeImport]
internal interface IAsyncCausalityTracerStatics
{
void TraceOperationCreation(CausalityTraceLevel traceLevel, CausalitySource source, Guid platformId, ulong operationId, string operationName, ulong relatedContext);
void TraceOperationCompletion(CausalityTraceLevel traceLevel, CausalitySource source, Guid platformId, ulong operationId, AsyncCausalityStatus status);
void TraceOperationRelation(CausalityTraceLevel traceLevel, CausalitySource source, Guid platformId, ulong operationId, CausalityRelation relation);
void TraceSynchronousWorkStart(CausalityTraceLevel traceLevel, CausalitySource source, Guid platformId, ulong operationId, CausalitySynchronousWork work);
void TraceSynchronousWorkCompletion(CausalityTraceLevel traceLevel, CausalitySource source, CausalitySynchronousWork work);
//These next 2 functions could've been represented as an event except that the EventRegistrationToken wasn't being propagated to WinRT
EventRegistrationToken add_TracingStatusChanged(System.EventHandler<TracingStatusChangedEventArgs> eventHandler);
void remove_TracingStatusChanged(EventRegistrationToken token);
}
[ComImport]
[Guid("410B7711-FF3B-477F-9C9A-D2EFDA302DC3")]
[WindowsRuntimeImport]
internal interface ITracingStatusChangedEventArgs
{
bool Enabled { get; }
CausalityTraceLevel TraceLevel { get; }
}
// We need this dummy class to satisfy a QI when the TracingStatusChangedHandler
// after being stored in a GIT cookie and then called by the WinRT API. This usually
// happens when calling a MAnaged WinMD which access this feature.
[ComImport]
[Guid("410B7711-FF3B-477F-9C9A-D2EFDA302DC3")]
[WindowsRuntimeImport]
internal sealed class TracingStatusChangedEventArgs : ITracingStatusChangedEventArgs
{
public extern bool Enabled
{
[MethodImpl(MethodImplOptions.InternalCall)]
get;
}
public extern CausalityTraceLevel TraceLevel
{
[MethodImpl(MethodImplOptions.InternalCall)]
get;
}
}
internal enum CausalityRelation
{
AssignDelegate,
Join,
Choice,
Cancel,
Error
}
internal enum CausalitySource
{
Application,
Library,
System
}
internal enum CausalitySynchronousWork
{
CompletionNotification,
ProgressNotification,
Execution
}
internal enum CausalityTraceLevel
{
Required,
Important,
Verbose
}
internal enum AsyncCausalityStatus
{
Canceled = 2,
Completed = 1,
Error = 3,
Started = 0
}
}
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