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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 Microsoft.Win32;
#if ES_BUILD_STANDALONE
namespace Microsoft.Diagnostics.Tracing
#else
namespace System.Diagnostics.Tracing
#endif
{
// Represents the interface between EventProvider and an external logging mechanism.
internal interface IEventProvider
{
// Register an event provider.
unsafe uint EventRegister(
ref Guid providerId,
UnsafeNativeMethods.ManifestEtw.EtwEnableCallback enableCallback,
void* callbackContext,
ref long registrationHandle);
// Unregister an event provider.
uint EventUnregister(long registrationHandle);
// Write an event.
unsafe int EventWriteTransferWrapper(
long registrationHandle,
ref EventDescriptor eventDescriptor,
IntPtr eventHandle,
Guid* activityId,
Guid* relatedActivityId,
int userDataCount,
EventProvider.EventData* userData);
// Get or set the per-thread activity ID.
int EventActivityIdControl(UnsafeNativeMethods.ManifestEtw.ActivityControl ControlCode, ref Guid ActivityId);
// Define an EventPipeEvent handle.
unsafe IntPtr DefineEventHandle(uint eventID, string eventName, Int64 keywords, uint eventVersion, uint level, byte *pMetadata, uint metadataLength);
}
}
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